cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Determining the Proton's Gluonic Gravitational Form Factors
Creators: name: Duran, B.
name: Meziani, Z. -E.
name: Joosten, S.
name: Jones, M. K.
name: Prasad, S.
name: Peng, C.
name: Armstrong, W.
name: Atac, H.
name: Chudakov, E.
name: Bhatt, H.
name: Bhetuwal, D.
name: Boer, M.
name: Camsonne, A.
name: Chen, J. -P.
name: Dalton, M. M.
name: Deokar, N.
name: Diefenthaler, M.
name: Dunne, J.
name: Fassi, L. El
name: Fuchey, E.
name: Gao, H.
name: Gaskell, D.
name: Hansen, O.
name: Hauenstein, F.
name: Higinbotham, D.
name: Jia, S.
name: Karki, A.
name: Keppel, C.
name: King, P.
name: Ko, H. S.
name: Li, X.
name: Li, R.
name: Mack, D.
name: Malace, S.
name: McCaughan, M.
name: McClellan, R. E.
name: Michaels, R.
name: Meekins, D.
name: Paolone, M.
name: Pentchev, L.
name: Pooser, E.
name: Puckett, A.
name: Radloff, R.
name: Rehfuss, M.
name: Reimer, P. E.
name: Riordan, S.
name: Sawatzky, B.
name: Smith, A.
name: Sparveris, N.
name: Szumila-Vance, H.
name: Wood, S.
name: Xie, J.
name: Ye, Z.
name: Yero, C.
name: Zhao, Z.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The proton is one of the main building blocks of all visible matter in the universe. Among its intrinsic properties are its electric charge, mass, and spin. These emerge from the complex dynamics of its fundamental constituents, quarks and gluons, described by the theory of quantum chromodynamics (QCD). Using electron scattering, its electric charge and spin, shared among the quark constituents, have been the topic of active investigation. An example is the novel precision measurement of the proton's electric charge radius. In contrast, little is known about the proton's inner mass density, dominated by the energy carried by the gluons, which are hard to access through electron scattering since gluons carry no electromagnetic charge. Here, we chose to probe this gluonic gravitational density using a small color dipole, the $J/ψ$ particle, through its threshold photoproduction. From our data, we determined, for the first time, the proton's gluonic gravitational form factors. We used a variety of models and determined, in all cases, a mass radius that is notably smaller than the electric charge radius. In some cases, the determined radius, although model dependent, is in excellent agreement with first-principle predictions from lattice QCD. This work paves the way for a deeper understanding of the salient role of gluons in providing gravitational mass to visible matter.
description: Accepted for publication
Power and Conflict Management: The Joban-God Talk
Creators: name: Wafula, R S
Publisher: name: Narrative and Conflict: Explorations in Theory and Practice
Year: 2016

description: Sara Cobb begins her book, Speaking of Violence by stating that â€œstories matter. They have gravitas; they are grave. They have weight. They are concrete. They materialize policies, institutions, relationships, and identities.â€[1] Applied to the book of Job 1â€”2, one can ask, how grave is the story of Job? What conflict does it create? What is at stake in this conflict? What does the story concretize? In this paper I point out that there are two narrative approaches to reading Job's conflict with God. One is that Job does not resist divine power and the other is that he does. If we take it that job does not resist divine power, we implicitly begin fostering stories that can create docility/passivity in the face of imperial power. If we argue that he resists divine power, we create stories that enable people to stand up for their freedoms/rights, hence fostering the idea that conflict cannot be solved by docility but by confronting the powers-that-be, which create conflicts in the first place. In this paper, I argue for the later position.

[1] Sara Cobb, Speaking of Violence: The Politics and Poetics of Narrative in Conflict Resolution (Oxford and New York, NY: Oxford University Press, 2013), 3.
description: Narrative and Conflict: Explorations in Theory and Practice, Vol 3 No 1
Spin effects in strong-field laser-electron interactions
Creators: name: Ahrens, S.
name: Müller, T. O.
name: Villalba-Chávez, S.
name: Bauke, H.
name: Müller, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The electron spin degree of freedom can play a significant role in relativistic scattering processes involving intense laser fields. In this contribution we discuss the influence of the electron spin on (i) Kapitza-Dirac scattering in an x-ray laser field of high intensity, (ii) photo-induced electron-positron pair production in a strong laser wave and (iii) multiphoton electron-positron pair production on an atomic nucleus. We show that in all cases under consideration the electron spin can have a characteristic impact on the process properties and their total probabilities. To this end, spin-resolved calculations based on the Dirac equation in the presence of an intense laser field are performed. The predictions from Dirac theory are also compared with the corresponding results from the Klein-Gordon equation.
description: 9 pages, 6 figures
Additional file 3 of Medication-related problems among hospitalized pregnant women in a tertiary teaching hospital in Ethiopia: a prospective observational study
Creators: name: Ahmed, Seid Mussa
name: Sundby, Johanne
name: Yesuf Ahmed Aragaw
name: Nordeng, Hedvig
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3:. Medications used among hospitalized pregnant women at JUMC, Ethiopia, from February to June 2017
Exploring Healthcare Professionals' Use of Narrative Mediation Approaches to Address Disclosure and Apology in the Aftermath of Medical Errors
Creators: name: Monk, Gerald
name: Sinclair, Stacey
name: Nelson, Michael
Publisher: name: Narrative and Conflict: Explorations in Theory and Practice
Year: 2016

description: Despite the overwhelming evidence that suggests that patients, families and health care systems benefit from offering appropriate disclosures and apologies to patients and families following the aftermath of medical errors, few health care organizations in the U.S. invest in providing systemic training in disclosure and apology. Using a narrative analysis this paper explores the cultural barriers in the United States healthcare environment that impede health care providers from engaging in restorative conversations with patients and families when things go wrong. The paper identifies a handful of programs and models that provide disclosure and apology training and argues for the unique contributions of narrative mediation to assist health care professionals to disclose adverse events to patients and families to restore trust.
description: Narrative and Conflict: Explorations in Theory and Practice, Vol 3 No 1
Additional file 1 of Examining aptitude and barriers to evidence-based medicine among trainees at an ACGME-I accredited program
Creators: name: Mahmoud, Mai A.
name: Sa’ad Laws
name: Kamal, Antoun
name: Dabia Al Mohanadi
name: Mohammed, Ahmed Al
name: Mahfoud, Ziyad R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1. Study Questionnaire.
A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE: Discovery of Seven Nearby Objects Including Two Candidate Spectroscopic Variables
Creators: name: Best, William M. J.
name: Liu, Michael C.
name: Magnier, Eugene A.
name: Aller, Kimberly M.
name: Deacon, Niall R.
name: Dupuy, Trent J.
name: Redstone, Joshua
name: Burgett, W. S.
name: Chambers, K. C.
name: Hodapp, K. W.
name: Kaiser, N.
name: Kudritzki, R. -P.
name: Morgan, J. S.
name: Price, P. A.
name: Tonry, J. L.
name: Wainscoat, R. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present initial results from a wide-field (30,000 deg^2) search for L/T transition brown dwarfs within 25 pc using the Pan-STARRS1 and WISE surveys. Previous large-area searches have been incomplete for L/T transition dwarfs, because these objects are faint in optical bands and have near-infrared colors that are difficult to distinguish from background stars. To overcome these obstacles, we have cross-matched the Pan-STARRS1 (optical) and WISE (mid-IR) catalogs to produce a unique multi-wavelength database for finding ultracool dwarfs. As part of our initial discoveries, we have identified seven brown dwarfs in the L/T transition within 9-15 pc of the Sun. The L9.5 dwarf PSO J140.2308+45.6487 and the T1.5 dwarf PSO J307.6784+07.8263 (both independently discovered by Mace et al. 2013) show possible spectroscopic variability at the Y- and J-bands. Two more objects in our sample show evidence of photometric J-band variability, and two others are candidate unresolved binaries based on their spectra. We expect our full search to yield a well-defined, volume-limited sample of L/T transition dwarfs that will include many new targets for study of this complex regime. PSO J307.6784+07.8263 in particular may be an excellent candidate for in-depth study of variability, given its brightness (J = 14.2 mag) and proximity (11 pc).
description: 35 pages, 11 figures, accepted by ApJ
The density of mid-sized Kuiper belt object 2002 UX25 and the formation of the dwarf planets
Creators: name: Brown, Michael E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The formation of the largest objects in the Kuiper belt, with measured densities of ~1.5 g cm-3 and higher, from the coagulation of small bodies, with measured densities below 1 g cm-3 is difficult to explain without invoking significant porosity in the smallest objects. If such porosity does occur, measured densities should begin to increase at the size at which significant porosity is no longer supported. Among the asteroids, this transition occurs for diameters larger than ~350 km. In the Kuiper belt, no density measurements have been made between ~350 km and ~850 km, the diameter range where porosities might first begin to drop. Objects in this range could provide key tests of the rock fraction of small Kuiper belt objects. Here we report the orbital characterization, mass, and density determination of the 2002 UX25 system in the Kuiper belt. For this object, with a diameter of ~650 km, we find a density of 0.82+/-0.11 g cm-3, making it the largest solid known object in the solar system with a measured density below that of pure water ice. We argue that the porosity of this object is unlikely to be above ~20%, suggesting a low rock fraction. If the currently measured densities of Kuiper belt objects are a fair representation of the sample as a whole, creating ~1000 km and larger Kuiper belt objects with rock mass fractions of 70% and higher from coagulation of small objects with rock fractions as low as those inferred from 2002 UX25 is difficult.
description: ApJL, in press. 15 pages, 3 figures
How To Start A War: Eight Cases of Strategic Provocation
Creators: name: Maddox, JD
Publisher: name: Narrative and Conflict: Explorations in Theory and Practice
Year: 2016

description: A leader intent on starting a war must develop a compelling narrative for their domestic constituency and the international community.Â  For some, strategic provocation â€“ defined here as the use of deceptive tactics to instigate violence against one's own state â€“ has been a reliable means of initiating war under the guise of self-defense. Eight cases of strategic provocation reveal a basic pattern of its use, and some possibly unwelcome truths about state leaders' methods.Â  As international institutions increasingly scrutinize states' interventionist agendas, the use of deceptive narratives is likely to continue. Despite known indicators of strategic provocation operations, warning of such operations has not typically prevented warfare.
description: Narrative and Conflict: Explorations in Theory and Practice, Vol 3 No 1
A Deconstructive Approach to Class Meetings: Managing Conflict and Building Learning Communities
Creators: name: Kecskemeti, Maria
name: Kaveney, Kathleen
name: Gray, Sheridan
name: Drewery, Wendy
Publisher: name: Narrative and Conflict: Explorations in Theory and Practice
Year: 2013

description: When the quality of teacher-student and student-student relationships is undermined by conflicts, classrooms can become unwelcoming environments that are not conducive to teaching and learning. Circle conversations are widely utilized in response to such conflicts as well as for academic and community-building purposes. In this article, we introduce a form of circle conversation, which we have termed ‘deconstructive class meeting’. We developed this specific meeting format in a New Zealand secondary school drawing on local, indigenous processes of community conversation, discourse theory and narrative therapy. The structure of our meeting is deliberately designed to support the simultaneous achievement of two, seemingly contradictory objectives: conflict resolution and community building. We argue that when teachers and students collaboratively examine the power of ideas or discourses of learning not only alternatives to problematic practices become available, but learning communities and relationships are strengthened also.
description: Narrative and Conflict: Explorations in Theory and Practice, Vol 1 No 1
Additional file 6 of Medication-related problems among hospitalized pregnant women in a tertiary teaching hospital in Ethiopia: a prospective observational study
Creators: name: Ahmed, Seid Mussa
name: Sundby, Johanne
name: Yesuf Ahmed Aragaw
name: Nordeng, Hedvig
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 6:. Medications involved in MRPs among hospitalized pregnant women at JUMC, Ethiopia, from February to June 2017
Laser-based acceleration of non-relativistic electrons at a dielectric structure
Creators: name: Breuer, John
name: Hommelhoff, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A proof-of-principle experiment demonstrating dielectric laser acceleration of non-relativistic electrons in the vicinity of a fused-silica grating is reported. The grating structure is utilized to generate an electromagnetic surface wave that travels synchronously with and efficiently imparts momentum on 28keV electrons. We observe a maximum acceleration gradient of 25MeV/m. We investigate in detail the parameter dependencies and find excellent agreement with numerical simulations. With the availability of compact and efficient fiber laser technology, these findings may pave the way towards an all-optical compact particle accelerator. This work also represents the demonstration of the inverse Smith-Purcell effect in the optical regime.
description: 5 pages, 4 figures
"Leaning In" as Imperfect Allies in Community Work
Creators: name: Reynolds, Vikki
Publisher: name: Narrative and Conflict: Explorations in Theory and Practice
Year: 2013

description: The work of allies in community work is informed by justice-doing and decolonizing practice. A brief description of being an ally is outlined here, as well as understandings of the importance of the concepts of fluidity and groundless solidarity in ally work. Leaning in is described and offered as a way to invite accountability while resisting righteousness. Leaning in invites collective accountability, which is a more useful concept than personal responsibility, which sides with individualism and the idea we are only held accountable for our personal actions. Strategies for being an ally are considered, including engaging with a hopeful skepticism while reflexively questioning whether we are walking the talk. The limitations of allies are discussed, as well as the need to make repair for our failures as allies. Strategies for resisting both unity and division are addressed, as is the possibility of creating cultures of critique that allow for something other than attack and division. Imperfect solidarity based on points of connection is offered as a useful strategy for maintaining good-enough and required alliances across time. Finally, some exercises are offered for readers to engage with: an inquiry into their histories and imperfect practices of being and needing allies, and some invitations to step into domains where they have previously not served as allies.
description: Narrative and Conflict: Explorations in Theory and Practice, Vol 1 No 1
MPEC 2023-V74 : 2023 VB2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VB2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Deconstructing the Policing of the Normal: An Examination of the Work Done by Undercover Anti-Bullying Teams
Creators: name: Winslade, John
Publisher: name: Narrative and Conflict: Explorations in Theory and Practice
Year: 2013

description: Bronwyn Davies and her colleagues have argued for a Foucauldian analysis of bullying relations in schools as an alternative to the common assumption of pathological moral character in the bully. In a Foucauldian analysis, bullying works to maintain discursive categories of normality through marking those who differ as other. Bullying discourages dissensus and polices social norms more than it deviates from them. This paper takes up this analysis and examines the undercover anti-bullying team process for whether it produces greater openness to difference and challenges the discursive logic of bullying.
description: Narrative and Conflict: Explorations in Theory and Practice, Vol 1 No 1
Additional file 2 of Medication-related problems among hospitalized pregnant women in a tertiary teaching hospital in Ethiopia: a prospective observational study
Creators: name: Ahmed, Seid Mussa
name: Sundby, Johanne
name: Yesuf Ahmed Aragaw
name: Nordeng, Hedvig
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2:. Characteristics of the study population according to ward type at JUMC, Ethiopia, from February to June 2017
Additional file 1 of Medication-related problems among hospitalized pregnant women in a tertiary teaching hospital in Ethiopia: a prospective observational study
Creators: name: Ahmed, Seid Mussa
name: Sundby, Johanne
name: Yesuf Ahmed Aragaw
name: Nordeng, Hedvig
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1:. Identification, assessment, classification, and documentation of MRPs and recommendations by the panel of experts
Additional file 2 of Income, inflammation and cancer mortality: a study of U.S. National Health and Nutrition Examination Survey mortality follow-up cohorts
Creators: name: Chan, Joshua E.
name: Amandeep K. Mann
name: Kapp, Daniel S.
name: Rehkopf, David H.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 2: Supplemental Table 2. Demographic, Socioeconomic, and Behavioral Characteristics Associated with CRP Levels. Association analysis between CRP and factors
Additional file 3 of Income, inflammation and cancer mortality: a study of U.S. National Health and Nutrition Examination Survey mortality follow-up cohorts
Creators: name: Chan, Joshua E.
name: Amandeep K. Mann
name: Kapp, Daniel S.
name: Rehkopf, David H.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 3: Supplemental Table 3. Demographic, Socioeconomic, and Behavioral Characteristics Associated with Fibrinogen Levels. Association analysis between fibrinogen and factors
Comparing molecular gas across cosmic time-scales: the Milky Way as both a typical spiral galaxy and a high-redshift galaxy analogue
Creators: name: Kruijssen, J. M. Diederik
name: Longmore, Steven N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Detailed observations of the nearest star-forming regions in the Milky Way (MW) provide the ultimate benchmark for studying star formation. The extent to which the results of these Galaxy-based studies can be extrapolated to extragalactic systems depends on the overlap of the environmental conditions probed. In this paper, we compare the properties of clouds and star-forming regions in the MW with those in nearby galaxies and in the high-redshift Universe. We find that in terms of their baryonic composition, kinematics, and densities, the clouds in the solar neighbourhood are similar to those in nearby galaxies. The clouds and regions in the Central Molecular Zone (CMZ, i.e. the inner 250 pc) of the MW are indistinguishable from high-redshift clouds and galaxies. The presently low star formation rate in the CMZ therefore implies that either (1) its gas represents the initial conditions for high-redshift starbursts or (2) some yet unidentified process consistently suppresses star formation over >100 Myr time-scales. We conclude that the MW contains large reservoirs of gas with properties directly comparable to most of the known range of star formation environments and is therefore an excellent template for studying star formation across cosmological time-scales.
description: 6 pages, 4 figures, 2 tables; accepted by MNRAS (5 August 2013)
Additional file 1 of Income, inflammation and cancer mortality: a study of U.S. National Health and Nutrition Examination Survey mortality follow-up cohorts
Creators: name: Chan, Joshua E.
name: Amandeep K. Mann
name: Kapp, Daniel S.
name: Rehkopf, David H.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 1: Supplemental Table 1. Occupational Classifications in NHANES III and NHANES 1999–2002. Occupational Classification
Transitions and excitations in a superfluid stream passing small impurities
Creators: name: Pinsker, Florian
name: Berloff, Natalia G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We analyse asymptotically and numerically the motion around a single impurity and a network of impurities inserted in a two-dimensional superfluid. The criticality for the break down of superfluidity is shown to occur when it becomes energetically favourable to create a doublet - the limiting case between a vortex pair and a rarefaction pulse on the surface of the impurity. Depending on the characteristics of the potential representing the impurity different excitation scenarios are shown to exist for a single impurity as well as for a lattice of impurities. Depending on the lattice characteristics it is shown that several regimes are possible: dissipationless flow, excitations emitted by the lattice boundary, excitations created in the bulk and the formation of large scale structures.
description: submitted to Physical review A
MPEC 2023-V75 : 2023 VC2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VC2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
MPEC 2023-V76 : 2023 VD2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VD2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Evidence for Radiogenic Sulfur-32 in Type AB Presolar Silicon Carbide Grains?
Creators: name: Fujiya, Wataru
name: Hoppe, Peter
name: Zinner, Ernst
name: Pignatari, Marco
name: Herwig, Falk
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report C, Si, and S isotope measurements on 34 presolar silicon carbide grains of Type AB, characterized by 12C/13C < 10. Nitrogen, Mg-Al-, and Ca-Ti-isotopic compositions were measured on a subset of these grains. Three grains show large 32S excesses, a signature that has been previously observed for grains from supernovae (SNe). Enrichments in 32S may be due to contributions from the Si/S zone and the result of S molecule chemistry in still unmixed SN ejecta or due to incorporation of radioactive 32Si from C-rich explosive He shell ejecta. However, a SN origin remains unlikely for the three AB grains considered here, because of missing evidence for 44Ti, relatively low 26Al/27Al ratios (a few times 10-3), and radiogenic 32S along with low 12C/13C ratios. Instead, we show that born-again asymptotic giant branch (AGB) stars that have undergone a very-late thermal pulse (VLTP), known to have low 12C/13C ratios and enhanced abundances of the light s-process elements, can produce 32Si, which makes such stars attractive sources for AB grains with 32S excesses. This lends support to the proposal that at least some AB grains originate from born-again AGB stars, although uncertainties in the born-again AGB star models and possible variations of initial S-isotopic compositions in the parent stars of AB grains make it difficult to draw a definitive conclusion.
description: 18 pages, 4 figures, 1 table, Accepted for publication in the Astrophysical Journal Letters
Implementation and Tuning of PID, Fractional PID and LA Controllers for pH Control
Creators: name: Ardinugroho, Servatius Bismanditio
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: pH control
PID controller
fractional PID controller
LA controller
controller tuning
controller performance metrics

description: Maintaining the pH of a fluid or a solution at a specific value is a concern in many industrial processes, wastewater management, and food and pharmaceutical production. Given the importance of controlling pH in many processes, the objective of this thesis is to study and compare the effectiveness of some controller algorithms to control the pH of a process. In this study, the performance of three controller algorithms, namely PID, fractional PID and LA controllers, is evaluated for the control of a simple neutralization process using conventional controller performance metrics. Performance metrics used are the response time, the Integral of the Time weighted Absolute Error (ITAE), the Integral of the Squared Error (ISE), and the Integral of the Squares of the changes (ΔU) in the manipulated variable (ISDU). The three controllers were therefore tuned to minimize one or a combination of the controller performance metrics. Results show that PID, fractional PID and LA controllers implemented and tested in this research are all worthy controllers for maintaining pH of the neutralization process. Simulation results show that the three controllers can be used with confidence to cope with the high nonlinearity of a pH neutralization process provided that the process is properly designed. The relative small gain in performance obtained with the fractional PID controller, compared to a linear PID controller, suggests that it is not worth resorting to a fractional PID controller given its complexity and higher computation effort. Results show that PID and LA controllers are easy to implement with short response time and low ITAE and ISDU performance metrics.
Resources for bosonic quantum computational advantage
Creators: name: Chabaud, Ulysse
name: Walschaers, Mattia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers promise to dramatically outperform their classical counterparts. However, the non-classical resources enabling such computational advantages are challenging to pinpoint, as it is not a single resource but the subtle interplay of many that can be held responsible for these potential advantages. In this work, we show that every bosonic quantum computation can be recast into a continuous-variable sampling computation where all computational resources are contained in the input state. Using this reduction, we derive a general classical algorithm for the strong simulation of bosonic computations, whose complexity scales with the non-Gaussian stellar rank of both the input state and the measurement setup. We further study the conditions for an efficient classical simulation of the associated continuous-variable sampling computations and identify an operational notion of non-Gaussian entanglement based on the lack of passive separability, thus clarifying the interplay of bosonic quantum computational resources such as squeezing, non-Gaussianity and entanglement.
description: Published version, 6+14 pages, 2 figures. Comments are welcome!
Peripheral downflows in sunspot penumbrae
Creators: name: van Noort, Michiel
name: Lagg, Andreas
name: Tiwari, Sanjiv
name: Solanki, Sami
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Sunspot penumbrae show high-velocity patches along the periphery. The high-velocity downflow patches are believed to be the return channels of the Evershed flow. We aim to investigate their structure in detail using Hinode SOT/SP observations. We employ Fourier interpolation in combination with spatially coupled height dependent LTE inversions of Stokes profiles to produce high-resolution, height-dependent maps of atmospheric parameters of these downflows and investigate their properties. High-speed downflows are observed over a wide range of viewing angles. They have supersonic line-of-sight velocities, some in excess of 20km/s, and very high magnetic field strengths, reaching values of over 7 kG. A relation between the downflow velocities and the magnetic field strength is found, in good agreement with MHD simulations. The coupled inversion at high resolution allows for the accurate determination of small-scale structures. The recovered atmospheric structure indicates that regions with very high downflow velocities contain some of the strongest magnetic fields that have ever been measured on the Sun.
description: A&A, in press, 14 pages, 15 figures
MPEC 2023-V77 : 2023 VE2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VE2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Phosphorene: A New 2D Material with High Carrier Mobility
Creators: name: Liu, Han
name: Neal, Adam T.
name: Zhu, Zhen
name: Tomanek, David
name: Ye, Peide D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Preceding the current interest in layered materials for electronic applications, research in the 1960's found that black phosphorus combines high carrier mobility with a fundamental band gap. We introduce its counterpart, dubbed few-layer phosphorene, as a new 2D p-type material. Same as graphene and MoS2, phosphorene is flexible and can be mechanically exfoliated. We find phosphorene to be stable and, unlike graphene, to have an inherent, direct and appreciable band-gap that depends on the number of layers. Our transport studies indicate a carrier mobility that reflects its structural anisotropy and is superior to MoS2. At room temperature, our phosphorene field-effect transistors with 1.0 um channel length display a high on-current of 194 mA/mm, a high hole field-effect mobility of 286 cm2/Vs, and an on/off ratio up to 1E4. We demonstrate the possibility of phosphorene integration by constructing the first 2D CMOS inverter of phosphorene PMOS and MoS2 NMOS transistors.
Characterising thermal sweeping: a rapid disc dispersal mechanism
Creators: name: Owen, James E.
name: de Badyn, Mathias Hudoba
name: Clarke, Cathie J.
name: Robins, Luke
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (Abridged) We consider the properties of protoplanetary discs that are undergoing inside-out clearing by photoevaporation. In particular, we aim to characterise the conditions under which a protoplanetary disc may undergo `thermal sweeping', a rapid (< 1e4 years) disc destruction mechanism proposed to occur when a clearing disc reaches sufficiently low surface density at its inner edge and where the disc is unstable to runaway penetration by the X-rays. We use a large suite of 1D radiation-hydrodynamic simulations to probe the observable parameter space, which is unfeasible in higher dimensions. These models allow us to determine the surface density at which thermal sweeping will take over the disc's evolution and to evaluate this critical surface density as a function of X-ray luminosity, stellar mass and inner hole radius. We find that this critical surface density scales linearly with X-ray luminosity, increases with inner hole radius and decreases with stellar mass and we develop an analytic model that reproduces these results. This surface density criterion is then used to determine the evolutionary state of protoplanetary discs at the point that they become unstable to destruction by thermal sweeping. We find that transition discs created by photoevaporation will undergo thermal sweeping when their inner holes reach 20-40 AU, implying that transition discs with large holes and no accretion (which were previously a predicted outcome of the later stages of all flavours of photoevaporation model) will not form. We emphasise that the surface density criteria that we have developed apply to all situations where the disc develops an inner hole that is optically thin to X-rays. It thus applies not only to the case of holes originally created by photoevaporation but also to holes formed, for example, by the tidal influence of planets.
description: 10 Pages, MNRAS accp
Additional file 4 of Income, inflammation and cancer mortality: a study of U.S. National Health and Nutrition Examination Survey mortality follow-up cohorts
Creators: name: Chan, Joshua E.
name: Amandeep K. Mann
name: Kapp, Daniel S.
name: Rehkopf, David H.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 4: Supplemental Table 4. Association of Cancer Mortality and Inflammatory Markers of All Participants. Cox-proportional hazard analysis of unadjusted (Model 1), demographic adjusted (Model 2), socioeconomic status adjusted (Model 3), and behavioral factors adjusted (Model 4).
MPEC 2023-V78 : 2023 VF2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VF2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Majorana fermions in $T$-shaped semiconductor nanostructures
Creators: name: Zhou, Y.
name: Wu, M. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the Majorana fermions in a $T$-shaped semiconductor nanostructure with the Rashba spin-orbit coupling and a magnetic field in the proximity of an s-wave superconductor. It is found that the properties of the low-energy modes (including the Majorana and near-zero-energy modes) at the ends of this system are similar to those in the Majorana nanowire. However, very distinct from the nanowire, one Majorana mode emerges at the intersection of the $T$-shaped structure when the number of the low-energy modes at each end $N$ is odd, whereas neither Majorana nor near-zero-energy mode appears at the intersection for even $N$. We also discover that the intersection Majorana mode plays an important role in the transport through the above $T$-shaped nanostructure with each end connected with a normal lead. Due to the presence of the intersection mode, the deviation of the zero-bias conductance from the ideal value in the long-arm limit $Ne^2/h$ is more pronounced in the regime of odd $N$ compared to the one of even $N$. Furthermore, when the magnetic field increases from the regime of odd $N$ to the one of even $N+1$, the deviation from the ideal value tends to decrease. This behavior is also very distinct from that in a nanowire, where the deviation always tends to increase with the increase of magnetic field.
description: 10 pages, 6 figures
Supplementary document for Integrate and scale: A source of spectrally separable photon pairs - 6647569.pdf
Creators: name: Burridge, Ben
name: Faruque, Imad
name: Rarity, John
name: Barreto, Jorge
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Expansion on the methods in the main text
Constraints on decreases in Eta Carinae's mass loss from 3D hydrodynamic simulations of its binary colliding winds
Creators: name: Madura, Thomas I.
name: Gull, Theodore R.
name: Okazaki, Atsuo T.
name: Russell, Christopher M. P.
name: Owocki, Stanley P.
name: Groh, Jose H.
name: Corcoran, Michael F.
name: Hamaguchi, Kenji
name: Teodoro, Mairan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent work suggests that the mass-loss rate of the primary star (Eta A) in the massive colliding wind binary Eta Carinae dropped by a factor of 2-3 between 1999 and 2010. We present results from large- (r=1545au) and small- (r=155au) domain, 3D smoothed particle hydrodynamic (SPH) simulations of Eta Car's colliding winds for 3 Eta A mass-loss rates (2.4, 4.8, and 8.5 x 10^-4 M_sun/yr), investigating the effects on the dynamics of the binary wind-wind collision (WWC). These simulations include orbital motion, optically thin radiative cooling, and radiative forces. We find that Eta A's mass-loss rate greatly affects the time-dependent hydrodynamics at all spatial scales investigated. The simulations also show that the post-shock wind of the companion star (Eta B) switches from the adiabatic to the radiative-cooling regime during periastron passage. The SPH simulations together with 1D radiative transfer models of Eta A's spectra reveal that a factor of 2 or more drop in Eta A's mass-loss rate should lead to substantial changes in numerous multiwavelength observables. Recent observations are not fully consistent with the model predictions, indicating that any drop in Eta A's mass-loss rate was likely by a factor < 2 and occurred after 2004. We speculate that most of the recent observed changes in Eta Car are due to a small increase in the WWC opening angle that produces significant effects because our line-of-sight to the system lies close to the dense walls of the WWC zone. A modest decrease in Eta A's mass-loss rate may be responsible, but changes in the wind/stellar parameters of Eta B cannot yet be fully ruled out. We suggest observations during Eta Car's next periastron in 2014 to further test for decreases in Eta A's mass-loss rate. If Eta A's mass-loss rate is declining and continues to do so, the 2014 X-ray minimum should be even shorter than that of 2009.
description: 38 pages, 25 figures, 1 table. Accepted for publication in MNRAS
Non-Hermiticity induced Exceptional Points and Skin Effect in the Dice-Haldane Model
Creators: name: Sarkar, Ronika
name: Bandyopadhyay, Arka
name: Narayan, Awadhesh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The interplay of topology and non-Hermiticity has led to diverse, exciting manifestations in a plethora of systems. In this work, we systematically investigate the role of non-Hermiticity in the Chern insulating Haldane model on a dice lattice. Due to the presence of a non-dispersive flat band, the dice-Haldane model hosts a topologically rich phase diagram with the non-trivial phases accommodating Chern numbers $\pm 2$. We introduce non-Hermiticity into this model in two ways -- through balanced non-Hermitian gain and loss, and by non-reciprocal hopping in one direction. Both these types of non-Hermiticity induce higher-order exceptional points of order three. We substantiate the presence and the order of these higher-order exceptional points using the phase rigidity and its scaling. Further, we construct a phase diagram to identify and locate the occurrence of these exceptional points in the parameter space. Non-Hermiticity has yet more interesting consequences on a finite-sized lattice. Unlike for balanced gain and loss, in the case of non-reciprocal hopping, the nearest-neighbour dice lattice system under periodic boundary conditions accommodates a finite, non-zero spectral area in the complex plane. This manifests as the non-Hermitian skin effect when open boundary conditions are invoked. In the more general case of the dice-Haldane lattice model, the non-Hermitian skin effect can be caused by both gain and loss or non-reciprocity. Fascinatingly, the direction of localization of the eigenstates depends on the nature and strength of the non-Hermiticity. We establish the occurrence of the skin effect using the local density of states, inverse participation ratio and the edge probability, and demonstrate its robustness to disorder. Our results place the dice-Haldane model as an exciting platform to explore non-Hermitian physics.
description: Published version
Twining Genera of (0,4) Supersymmetric Sigma Models on K3
Creators: name: Harrison, Sarah
name: Kachru, Shamit
name: Paquette, Natalie M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Conformal field theories with (0,4) worldsheet supersymmetry and K3 target can be used to compactify the E8xE8 heterotic string to six dimensions in a supersymmetric manner. The data specifying such a model includes an appropriate configuration of 24 gauge instantons in the E8xE8 gauge group to satisfy the constraints of anomaly cancellation. In this note, we compute twining genera - elliptic genera with appropriate insertions of discrete symmetry generators in the trace - for (0,4) theories with various instanton embeddings. We do this by constructing linear sigma models which flow to the desired conformal field theories, and using the techniques of localization. We present several examples of such twining genera which are consistent with a moonshine relating these (0,4) models to the finite simple sporadic group M24.
description: 22 pages, 3 tables. We thank T. Eguchi and K. Hikami for permission to copy our Tables 2 and 3 (M24 character table and q-expansions of some twining genera in the (4,4) sigma model with K3 target) from their article arXiv:1008.4924
MPEC 2023-V79 : 2023 VG2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VG2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Photonic spin Hall effect in topological insulators
Creators: name: Zhou, Xinxing
name: Zhang, Jin
name: Ling, Xiaohui
name: Chen, Shizhen
name: Luo, Hailu
name: Wen, Shuangchun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we theoretically investigate the photonic spin Hall effect (SHE) of a Gaussian beam reflected from the interface between air and topological insulators (TIs). The photonic SHE is attributed to spin-orbit coupling and manifests itself as in-plane and transverse spin-dependent splitting. We reveal that the spin-orbit coupling effect in TIs can be routed by adjusting the axion angle variations. Unlike the transverse spin-dependent splitting, we find that the in-plane one is sensitive to the axion angle. It is shown that the polarization structure in magneto-optical Kerr effect is significantly altered due to the spin-dependent splitting in photonic SHE. We theoretically propose a weak measurement method to determine the strength of axion coupling by probing the in-plane splitting of photonic SHE.