cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Social Determinants of Health and Well-Child Visits: How are they related?
Creators: name: Cram, Ashley
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: In the first year of life, children are recommended to attend 6 well-child visits (WCVs). Food insecurity, housing insecurity, and insurance insecurity are social determinants of health (SDOH) that have been found to impact health outcomes in children. With limited literature on the impact of SDOH on attendance at WCVs, this study aims to identify the impact that food, housing, and insurance insecurity have on attendance at 6 recommended WCVs. We conducted a secondary data analysis to identify the impact of SDOH on children that receive care at the UNC Children’s Primary Care Clinic. T-tests and linear regression analyses were used to determine if SDOH and WCVs were associated. None of the insecurities were found to be significantly associated with the number of missed WCVs. In order to effectively care for children in the first year of life, it is important to ensure that they are able to attend WCVs in order to receive proper immunizations and monitor development. This study found that food, housing, and insurance insecurity were not significantly associated with attendance at WCVs. With high attendance at WCVs in the first year of life, these appointments can serve as crucial time with families to establish health behaviors and implement interventions to help children achieve optimal health outcomes.
Data files and R scripts for Åsheim et al. 2022 Water salinity does not affect acute thermal tolerance (CTmax) in zebrafish (Danio rerio)
Creators: name: Åsheim, Eirik Ryvoll
name: Andreassen, Anna Haukedal
name: Morgan, Rachael
name: Silvestre, Mireia
name: Jutfelt, Fredrik
Publisher: name: Zenodo
Year: 2022

description: See README and R-scripts for more info.
Multisymplectic Constraint Analysis of Scalar Field Theories, Chern-Simons Gravity, and Bosonic String Theory
Creators: name: Gomis, Joaquim
name: Guerra, Arnoldo
name: Román-Roy, Narciso
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 53D42, 70S05, 70S10 (Primary) 35Q75, 53C15, 53Z05, 81T30, 83D05 (Secondary)

description: The (pre)multisymplectic geometry of the De Donder--Weyl formalism for field theories is further developed for a variety of field theories including a scalar field theory from the canonical Klein-Gordon action, the electric and magnetic Carrollian scalar field theories, bosonic string theory from the Nambu-Goto action, and $2+1$ gravity as a Chern-Simons theory. The Lagrangians for the scalar field theories and for $2+1$ Chern-Simons gravity are found to be singular in the De Donder--Weyl sense while the Nambu-Goto Lagrangian is found to be regular. Furthermore, the constraint structure of the premultisymplectic phase spaces of singular field theories is explained and applied to these theories. Finally, it is studied how symmetries are developed on the multisymplectic phase spaces in the presence of constraints.
description: Corrections in several mathematical expressions in Sections 4.1 and 4.4. 47 pp
A Framework for Understanding the Patterns of Student Reasoning Difficulties in Quantum Mechanics
Creators: name: Marshman, Emily
name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics Education (physics.ed-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Compared with introductory physics, relatively little is known about the development of expertise in advanced physics courses, especially in the case of quantum mechanics. Here, we describe a framework for understanding the patterns of student reasoning difficulties and how students develop expertise in quantum mechanics. The framework posits that the challenges many students face in developing expertise in quantum mechanics are analogous to the challenges introductory students face in developing expertise in introductory classical mechanics. This framework incorporates both the diversity in upper-level students' prior preparation, goals, and motivation in general (i.e., the facts that even in upper-level courses, students may be inadequately prepared, have unclear goals, and have insufficient motivation to excel) as well as the "paradigm shift" from classical mechanics to quantum mechanics. The framework is based on empirical investigations demonstrating that the patterns of reasoning, problem-solving, and self-monitoring difficulties in quantum mechanics bear a striking resemblance to those found in introductory classical mechanics. Examples from research in quantum mechanics and introductory classical mechanics are discussed to illustrate how the patterns of difficulties are analogous as students learn to unpack the respective principles and grasp the formalism in each knowledge domain during the development of expertise. Embracing such a framework and contemplating the parallels between the difficulties in these two knowledge domains can enable researchers to leverage the extensive literature for introductory physics education research to guide the design of teaching and learning tools for helping students develop expertise in quantum mechanics.
Jihad for Hearts and Minds:  Al Qaeda in the Arabian Peninsula’s Propaganda During the Civil War in Yemen
Creators: name: Papadopoulos, Katherine A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Al Qaeda in the Arabian Peninsula (AQAP) has established itself as a formidable local actor in Yemen, thriving on the devastating political and humanitarian crises resulting from the civil war in Yemen. Since the war’s start on 22 March 2015, AQAP has succeeded in seizing pockets of territory in Yemen’s southern governorates. This thesis investigates AQAP video propaganda by analyzing the visual imagery in a random sample of the over 256 videos posted by the group since the start of the war. While AQAP has been recognized for its international focus and efforts to recruit Westerners, the appeals to a Yemeni audience present in AQAP’s videos show a domestic focus intended to win the hearts and minds of Yemenis. AQAP seeks to garner support from and enmesh itself within local tribes by capitalizing on the fear of the Houthi insurgency, the desperate need for public services, and the separatist sentiment in southern Yemen. Although American counterterrorism measures have impacted the group’s capabilities, AQAP continues to survive, exert its influence in Yemen, and evolve as a dangerous terrorist threat.
ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton-proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb$^{-1}$ of collisions at a centre-of-mass energy of $\sqrt{s}$ = 8 TeV, although in some case an additional 4.7 fb$^{-1}$ of collision data at $\sqrt{s}$ = 7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models.
description: 53 pages plus author list + cover page (70 pages total), 24 figures, 10 tables, submitted to Eur. Phys. J., All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2014-07/
Modeling Reactive Hyperemia to better understand and assess Microvascular Function: a review of techniques
Creators: name: Coccarelli, Albertoo
name: Nelson, Michael D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Reactive hyperemia is a well-established technique for the non-invasive evaluation of the peripheral microcirculatory function, measured as the magnitude of limb re-perfusion after a brief period of ischemia. Despite widespread adoption by researchers and clinicians alike, many uncertainties remain surrounding interpretation, compounded by patient-specific confounding factors (such as blood pressure or the metabolic rate of the ischemic limb). Mathematical modeling can accelerate our understanding of the physiology underlying the reactive hyperemia response and guide in the estimation of quantities which are difficult to measure experimentally. In this work, we aim to provide a comprehensive guide for mathematical modeling techniques that can be used for describing the key phenomena involved in the reactive hyperemia response, alongside their limitations and advantages. The reported methodologies can be used for investigating specific reactive hyperemia aspects alone, or can be combined into a computational framework to be used in (pre-)clinical settings.
description: n/a
Utilizing Doulas to Improve Nursing Student Preparation and Self-Confidence in Providing Labor and Birth Support
Creators: name: Hinde, Tori
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Undergraduate nursing students generally have very limited opportunities to provide care to patients and families during labor and birth. This article explores a strategy to prepare nursing students for their first hospital clinical in labor and delivery (L&D) by utilizing birth doulas to teach labor support through interactive learning techniques. Continuous labor support is an evidence-based practice and is recommended by professional organizations including the Association of Women’s Health, Obstetric and Neonatal Nurses and the American College of Obstetricians and Gynecologists. BSN students in their second semester of nursing school were asked to evaluate their level of comfort in the L&D setting and their confidence in providing labor support prior to their first clinical. Post-intervention survey responses (n= 102) indicated an increase in comfort with beginning clinical in the L&D setting. Prior to the labor support training, 21.5% of students reported feeling comfortable or extremely comfortable beginning clinical on L&D. After the training, 82.4% of students reported feeling comfortable or extremely comfortable. Students also reported increased confidence in all five areas of labor support: introducing themselves to patients, discussing birth preferences, recommending safe and appropriate positions for labor, using touch to support a patient in labor, and confidence in providing emotional support in labor. Working in small groups with experienced doulas as facilitators substantially improved students’ confidence and comfort in providing labor support prior to their first obstetric clinical.
Efficient Chebyshev polynomial approach to quantum conductance calculations: Application to twisted bilayer graphene
Creators: name: de Castro, Santiago Giménez
name: Ferreira, Aires
name: Bahamon, D. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In recent years, Chebyshev polynomial expansions of tight-binding Green's functions have been successfully applied to the study of a wide range of spectral and transport properties of materials. However, the application of the Chebyshev approach to the study of quantum transport properties of noninteracting mesoscopic systems with leads has been hampered by the lack of a suitable Chebyshev expansion of Landaeur's formula or one of its equivalent formulations in terms of Green's functions in Keldysh's perturbation theory. Here, we tackle this issue by means of a hybrid approach that combines the efficiency of Chebyshev expansions with the convenience of complex absorbing potentials to calculate the conductance of two-terminal devices in a computationally expedient and accurate fashion. The versatility of the approach is demonstrated for mesoscopic twisted bilayer graphene (TBG) devices with up to $2.3\times10^6$ atomic sites. Our results highlight the importance of moiré effects, interlayer scattering events and twist-angle disorder in determining the conductance curves in devices with a small twist angle near the TBG magic angle $θ_m \approx 1.1^\circ$.
description: 11 pages, 4 figures
Contract Curses: Do Long Term Guaranteed Contracts Affect Player Performance in the National Hockey League?Contract Curses: Do Long Term Guaranteed Contracts Affect Player Performance in the National Hockey League?
Creators: name: Wu, Lingbo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: The aim of this paper is to examine whether or not the “contract curse” (the idea that during contract years, players will purposefully perform at a higher rate in order to sign a bigger contract and then upon receiving these guaranteed salaries may vary their effort level over the course of the contract cycle) is a viable worry in professional sports leagues, and to what extent would contracts affect the stability of player performance. The research will specifically focus on the salaries of professional athletes within the National Hockey League (NHL). Beyond just comparing the productivity of NHL players before and after their given contracts, this paper will also attempt to predict the future performance of players given their current contract and performance information, and propose more accurate contract agreements in order to maximize player productivity.
Schema di raccolta dati dei Paesi di provenienza degli alimenti della base di dati MIC su RaDISAN flusso unico, costruito partendo da COUNTRY_8.1 di EFSA Catalogue Browser 1.2.12
Creators: name: Saiu Rita
Publisher: name: Zenodo
Year: 2023
Subjects: RaDISAN

description: È stato utilizzato il prospetto COUNTRY_8.1, pubblicato in EFSA Catalogue browser. Nessuna modifica fatta /da fare
description: COUNTRY_8.1_MIC servirà a tracciare il Paese di origine del prodotto campionato.
A Project Submitted To The School Of Graduate Studies Of Addis Ababa University In Partial Fulfilment Of The Requirements For The Degree Of Masters Of Art In Economics (Applied Trade Policy Analysis)
Creators: name: Eyerusalem Regassa
Publisher: name: Zenodo
Year: 2008

description: The government of Ethiopia have been trying to create a good environment for investors and exporters of non-traditional product by providing different export and investment incentives. Among these are the Export Trade Duty Incentives and Export Credit Guarantee Scheme. This study investigates the impact of these schemes on export. A Difference -in-Difference methodology was used to estimate effects of the two export incentives adopted in Ethiopia. With data for individual exporters of the year 2000and 2002 , the DID estimation shows significant impact of export incentives on export .But this should not be over emphasised ,one has to look at the costs for the government either in terms of foreign exchange or opportunity cost of the funds to the country.
An experimental analysis from the magnetic interactions in nanowire arrays
Creators: name: Silva, Wibson W. G.
name: Dias, Adrielson de A.
name: Rodrigues, Alexandre R.
name: Chávez, Francisco E.
name: de Oliveira, Rafael A.
name: Holanda, José
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the magnetic interactions experimentally in nanostructures of nanowire arrays. The intensity value obtained from the interactions provides information about its magnetic behavior. We observed two types of experimental magnetic behavior, i. e., demagnetized and magnetized. Our approach represents the first experimental way to analyze the magnetic behavior of a nanostructure considering its magnetic dependence, which is very important for applications in sensors, for example.
Surface corrections to the moment of inertia and shell structure in finite Fermi systems
Creators: name: Gorpinchenko, D. V.
name: Magner, A. G.
name: Bartel, J.
name: Blocki, J. P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The moment of inertia for nuclear collective rotations is derived within a semiclassical approach based on the Inglis cranking and Strutinsky shell-correction methods, improved by surface corrections within the nonperturbative periodic-orbit theory. For adiabatic (statistical-equilibrium) rotations it was approximated by the generalized rigid-body moment of inertia accounting for the shell corrections of the particle density. An improved phase-space trace formula allows to express the shell components of the moment of inertia more accurately in terms of the free-energy shell correction. Evaluating their ratio within the extended Thomas-Fermi effective-surface approximation, one finds good agreement with the quantum calculations.
description: 9 pages,4 figures
Racially Biased Post-Operative Pain Management: Implications for Achieving Health Equity
Creators: name: Ward, Nicole
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: This comparative literature review will explore whether a disparity exists in the management of postoperative pain between African American and non-African American patients due to racial congruence or non-congruence of the nurse and the African American patient. Pain can have considerable socioeconomic, social, and physical consequences when managed improperly. A 2011 Institute of Medicine report found that acute postoperative pain was adequately managed in fewer than half of cases. Though an overall disparity in the treatment of African Americans’ pain has been well-established, this study will explore whether this disparity applies specifically to the setting of postoperative pain. This paper will examine the historical context, pain myths regarding Black bodies, and the negative effects that stereotypes have on health outcomes. One distinct limitation of this study is a paucity of literature regarding the contributing factors to this disparity. Consequently, we will discuss implications for future research that may bring us closer to achieving health equity.
Jet-Loaded Cold Atomic Beam Source for Strontium
Creators: name: Kwon, Minho
name: Holman, Aaron
name: Gan, Quan
name: Liu, Chun-Wei
name: Molinelli, Matthew
name: Stevenson, Ian
name: Will, Sebastian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on the design and characterization of a cold atom source for strontium (Sr) based on a two-dimensional magneto-optical trap (MOT) that is directly loaded from the atom jet of a dispenser. We characterize the atom flux of the source by measuring the loading rate of a three-dimensional MOT. We find loading rates of up to $10^{8}$ atoms per second. The setup is compact, easy to construct, and has low power consumption. It addresses the long standing challenge of reducing the complexity of cold beam sources for Sr, which is relevant for optical atomic clocks and quantum simulation and computing devices based on ultracold Sr.
description: 6 pages, 4 figures
MPEC 2023-T191 : 2023 TO7
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 TO7

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.
Nursing Student and Clinical Faculty Perceptions of the Three Safety Checks When Used with Medication Administration Technology
Creators: name: Gaidis, Erin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: For patient safety, it is important that medication administration safety checks and procedures learned in school translate into use in professional practice. As more technology is being used in healthcare, educational programs are challenged to keep pace with the most current clinical technologies. By gaining insight into medication administration difficulties faced by students transitioning into clinical and perspectives of their clinical instructors, this quality improvement project aimed to identify areas of medication safety with the most discrepancy between education and practice to develop strategies to enhance medication administration education. 

At the University of North Carolina at Chapel Hill School of Nursing, eight clinical faculty were interviewed regarding their students’ experiences administering medications. Four nursing students participated in two focus groups where they were asked about their medication administration experiences in lab and translation of that content into clinical practice, with a focus on the three medication safety checks. While unable to complete checks as taught in lab, students and faculty adapted their practice to perform checks that worked with technology being used. One of the major points of feedback from students was the desire to learn in lab how the pattern of medication administration aligned with technologies used. All clinical faculty agreed that a more realistic lab environment, including medication administration technology, would be helpful as students learn medication administration. Moving forward, priorities should include alterations to the lab curriculum to teach a system of three safety checks that can be used without change with current medication administration technology.
Synthesis and Crystal Growth of Tetragonal Fe1.00Se
Creators: name: Koz, Cevriye
name: Schmidt, Marcus
name: Borrmann, Horst
name: Burkhardt, Ulrich
name: Rossler, Sahana
name: Carrillo-Cabrera, Wilder
name: Schnelle, Walter
name: Schwarz, Ulrich
name: Grin, Yuri
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Single crystals of tetragonal Fe1.00Se were grown from polycrystalline material by chemical vapor transport reaction at temperatures below 723 K using AlCl3 as transport additive. The plate-shaped single crystals have edge lengths up to 4 mm. The single crystals display complete diamagnetic shielding factor 4piX = -1 below the superconducting transition.
description: 8 pages, 9 figures
Eumops delticus Thomas 1923
Creators: name: Wilson, Don E.
name: Mittermeier, Russell A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Molossidae
Eumops
Eumops delticus

description: 30. Delta Bonneted Bat Eumops delticus French: Eumope du delta / German: Delta-Bulldogfledermaus / Spanish: Eumops del delta Other common names: Marajo Island Bonneted Bat Taxonomy. Eumops delticus Thomas, 1923, “Caldeirao,” Ilha Marajo, Para, Brazil. Eumops delticus was previously considered a subspecies of E. bonariensis but separated based on morphological differences and allopatry. Monotypic. Distribution. Known from scattered localities in S Colombia (Caqueta Department), NE Peru (Loreto Department), and N & E Brazil (Amapa, Para, Bahia, and Minas Gerais states). Descriptive notes. Head-body 65-72 mm, tail 34-45 mm, ear 19-22 mm, hindfoot 9-10 mm, forearm 45-48 mm; weight 15 g (one specimen). See general characteristics of the genus under the Black Bonneted Bat (LE. auripendulus). Pelage of the Delta Bonneted Bat is dark brown on back and paler on venter. Compared with the Common Dwarf Bonneted Bat (FE. bonariensis), it has shorter, narrower skull; longer ears; and larger basisphenoid pits. Habitat. Lowland Amazonian rainforests and savannas and near human habitation. Food and Feeding. The Delta Bonneted Bat is an aerial insectivore. Breeding. A pregnant Delta Bonneted Bat was documented in October in north-eastern Peru. Activity patterns. No information. Movements, Home range and Social organization. No information. Status and Conservation. Classified as Data Deficient on The IUCN Red Lust. Bibliography. Diaz (2011), Eger (1977, 2008), Silva et al. (2013).
description: Published as part of Don E. Wilson & Russell A. Mittermeier, 2019, Molossidae, pp. 598-672 in Handbook of the Mammals of the World – Volume 9 Bats, Barcelona :Lynx Edicions on page 631, DOI: 10.5281/zenodo.6418279
Nonlinear spin current of photoexcited magnons in collinear antiferromagnets
Creators: name: Fujiwara, Kosuke
name: Kitamura, Sota
name: Morimoto, Takahiro
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the nonlinear magnon spin current induced by an ac electric field under light irradiation in collinear antiferromagnets with broken inversion symmetry. For linearly polarized light, we find that a dc spin current appears through ``the magnon spin shift current" mechanism, which is driven by a spin polarization generation in the two magnon creation process and has a close relationship to the geometry of magnon bands through Berry connection. For circularly polarized light, a dc spin current appears through ``the spin injection current" mechanism, which is proportional to the relaxation time of magnons and can be large when the magnon lifetime is long. We demonstrate generation of the magnon spin shift and injection currents, based on a few toy models and a realistic model for a multiferroic material M$_2$Mo$_3$O$_8$.
description: 12 pages, 5 figures, version as accepted for publication
Chinese Foreign Aid and UNGA Voting Patterns: A Pooled Time-Series Analysis
Creators: name: Thomas Causey
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: In recent years, China’s foreign aid investments have generated increased attention from scholars and pundits alike. Following work demonstrating the political motivations of China’s concessional, state-backed financing, I argue that Chinese aid should result in recipients voting more in line with China in the United Nations General Assembly (UNGA). Using a series of fixed-effects regressions, I estimate policy distance between China and its aid recipients as a function of the amount of aid received. My results give no reason to indicate that Chinese aid leads to consistent policy concessions within the UNGA.
Detecting neutrino-boosted axion dark matter in the MeV gap
Creators: name: Carenza, Pierluca
name: Luque, Pedro De la Torre
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The elusive nature of Dark Matter (DM) remains a mystery far from being solved. A vast effort is dedicated to search for signatures of feeble DM interactions with Standard Model particles. In this work, we explore the signatures of axion DM boosted by interactions with Supernova neutrinos: Neutrino-Boosted Axion DM ($ν$BADM). We focus on $ν$BADM converting into photons in the Galactic magnetic field, generating a peculiar gamma-ray flux. This signal falls in the poorly explored MeV energy range, that will be probed by next generation gamma-ray missions. Once more, astrophysical searches might act as a probe of fundamental physics, unveiling the nature and properties of DM.
description: 9 pages, 2 figures, 2 tables. v2: major changes to fix eqs. 3-6-7. conclusions changed accordingly. v3: minor corrections to match the published version
Superconducting properties of 3D low-density TI-bipolaron gas in magnetic field
Creators: name: Lakhno, Victor D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Consideration is given to thermodynamical properties of a three-dimensional Bose-condensate of translation-invariant bipolarons (TI-bipolarons) in magnetic field. The critical temperature of transition, critical magnetic fields, energy, heat capacity and the transition heat of TI-bipolaron gas are calculated. Such values as maximum magnetic field, London penetration depth and their temperature dependencies are calculated. The results obtained are used to explain experiments on high-temperature superconductors.
description: 40 pages, 8 figures. The paper is significantly shortened as parts of it have been published elsewhere since 2015. The title has been changed, some clarifications and minor revision have been made, references added. All results unchanged. This version is published in Condens. Matter 4, 43, 2019. arXiv admin note: text overlap with arXiv:1507.08510
The Bardeen-Petterson effect, disk breaking, and the spin orientations of supermassive black-hole binaries
Creators: name: Steinle, Nathan
name: Gerosa, Davide
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Supermassive black-hole binaries are driven to merger by dynamical friction, loss-cone scattering of individual stars, disk migration, and gravitational-wave emission. Two main formation scenarios are expected. Binaries that form in gas-poor galactic environments do not experience disk migration and likely enter the gravitational-wave dominated phase with roughly isotropic spin orientations. Comparatively, binaries that evolve in gas-rich galactic environments might experience prominent phases of disk accretion, where the Bardeen-Petterson effect acts to align the spins of the black holes with the orbital angular momentum of the disk. However, if the accretion disk breaks alignment is expected to be strongly suppressed -- a phenomenon that was recently shown to occur in a large portion of the parameter space. In this paper, we develop a semi-analytic model of joint gas-driven migration and spin alignment of supermassive black-hole binaries taking into account the impact of disk breaking for the first time. Our model predicts the occurrence of distinct subpopulations of binaries depending on the efficiency of spin alignment. This implies that future gravitational-wave observations of merging black holes could potentially be used to (i) discriminate between gas-rich and gas-poor hosts and (ii) constrain the dynamics of warped accretion disks.
Comment on "Quantum discord through the generalized entropy in bipartite quantum states"
Creators: name: Bellomo, Guido
name: Plastino, Angelo
name: Majtey, Anna P.
name: Plastino, Angel R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In [X.-W. Hou, Z.-P. Huang, S. Chen, Eur. Phys. J. D 68, 1 (2014)], Hou et al. present, using Tsallis' entropy, possible generalizations of the quantum discord measure, finding original results. As for the mutual informations and discord, we show here that these two types of quantifiers can take negative values. In the two qubits instance we further determine in which regions they are non-negative. Additionally, we study alternative generalizations on the basis of Rényi entropies.
description: 5 pages, 4 figures
Adelic Amplitudes and Intricacies of Infinite Products
Creators: name: Jepsen, Christian B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For every prime number $p$ it is possible to define a $p$-adic version of the Veneziano amplitude and its higher-point generalizations. Multiplying together the real amplitude with all its $p$-adic counterparts yields the adelic amplitude. At four points it has been argued that the adelic amplitude, after regulating the product that defines it, equals one. For the adelic 5-point amplitude, there exist kinematic regimes where no regularization is needed. This paper demonstrates that in special cases within this regime, the adelic product can be explicitly evaluated in terms of ratios of the Riemann zeta function, and observes that the 5-point adelic amplitude is not given by a single analytic function. Motivated by this fact to study new regularization procedures for the 4-point amplitude, an alternative formalism is presented, resulting in non-constant amplitudes that are piecewise analytic in the three scattering channels, including one non-constant adelic amplitude previously suggested in the literature. Decomposing the residues of these amplitudes into weighted sums of Gegenbauer polynomials, numerical evidence indicates that in special ranges of spacetime dimensions all the coefficients are positive, as required by unitarity.
description: V2: three additional references added, minor typos fixed, figure 1 recoloured
Where is Love: Oratorio and Myth
Creators: name: Tillman, Kevin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Like my music, the Requiem Mass and the Norse legend "The Death of Baldur" speak of mutual grief. They seek to help those who have lost someone they love find solace, and they both talk about some form of an afterlife. These writings inspired me to author a compelling story of love, loss, and comfort, "Where is Love: For Those We've Lost." It is an oratorio about two lovers living during the AIDS epidemic. It follows a long tradition of oratorios, from early Catholic plainchant through Georg Frideric Handel, Paul Hindemith, and Philip Glass. It makes use of pseudo-autobiographical texts based on the recollection of exchanges between the author and his former lover Eric, as well as passages from Norse mythology and the Requiem Mass.
A THESIS SUBMITTED TO THE SCHOOL OF GRADUATE STUDIES OF ADDIS ABABA UNIVERSITY IN PARTIAL REQUIREMENTS OF FOR THE DEGREE OF MASTERS OF PUBLIC HEALTH IN REPRODUCTIVE AND FAMILY HEALTH.
Creators: name: MELESE TEBEKA (BSc.)
Publisher: name: Zenodo
Year: 2019

description: Abstract

Background: The cause of stillbirth is often unknown, but can be attributable to various causes;

hypertensive disorders and obstetric factors supposed to complicate pregnancy and may cost the

life of the fetus. Increased risk of stillbirth in most conditions is not precisely known and

available few research findings are inconsistent & its effect is not well established.

Objectives: To identify the determinants of still birth among mother who gave birth in Mizan Tepi

University Teaching Hospital South West Ethiopia.
title: Decreasing Allied Support for Anti-Soviet Strategic Embargoes A Demonstration of the Declining Hegemony of the United States
Creators: name: Johnstone, Tracey A.
Publisher: name: Old Dominion University Libraries
Year: 1986

description: This thesis evaluates the declining hegemony of the United States over its allies since the end of World War II. Robert Gilpin and Robert Keohane's theories about the decline in U.S. hegemony are discussed as are the hegemonic theories of Gramsci as interpreted by Robert Cox. The three progressively hostile reactions of U.S. allies to U.S.-initiated embargoes against the Eastern Bloc are used to illustrate the decreasing control of the United States over the economic and strategic policies of its allies. The conclusion states' that Ronald Reagan ignored historical trends and contemporary international politics when he decided to force U.S. allies to comply with his embargo against the Soviet Union's natural gas pipeline.
MPEC 2023-T192 : 2023 TP7
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 TP7

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.
The ‘Southern Way of Life’: North Carolina’s Ku Klux Klan of the 1960s and 1970s
Creators: name: Wright, Nico
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: The Ku Klux Klan (KKK) is a nationally and internationally famous American white supremacist hate group. First created in the wake of the American Civil War with the goal of opposing economic and political equality for African-Americans, the group spread in popularity in Southern states, stretching its methods of intimidation and violence to oppose immigrants, Catholics, Jews, and LGBTQ individuals in addition to African-Americans. In its most recent resurgence beginning around 1946, the KKK’s chapters grew significantly in North Carolina, with recruitment in North Carolina alone surpassing the entire rest of the South. The Klan grew to popularity as whites feared desegregation would threaten their “Southern way of life.” This study examines how the Klan rose in North Carolina, a state considered progressive by the standards at the time, and what the proposed “Southern way of life” means. Utilizing FBI interviews with Klan members involved in the Greensboro Massacre of 1979, where Klansmen shot and killed five members of the Communist Workers Party (CWP), this study delves into the elements that make up Klan identity. Understanding the nuances of regional and cultural identity illuminates how certain ideas and groups can take hold and become popular, which is relevant in a time where organized racism is experiencing a public resurgence.
A New Agent-Based Intelligent Network Architecture
Creators: name: Arzo, Sisay Tadesse
name: Scotece, Domenico
name: Bassoli, Riccardo
name: Granelli, Fabrizio
name: Foschini, Luca
name: Fitzek, Frank H. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The advent of 5G and the design of its architecture has become possible because of the previous individual scientific works and standardization efforts on cloud computing and network softwarization. Software-defined Networking and Network Function Virtualization started separately to find their convolution into 5G network architecture. Then, the ongoing design of the future beyond 5G (B5G) and 6G network architecture cannot overlook the pivotal inputs of different independent standardization efforts about autonomic networking, service-based communication systems, and multi-access edge computing. This article provides the design and the characteristics of an agent-based, softwarized, and intelligent architecture, which coherently condenses and merges the independent proposed architectural works by different standardization working groups and bodies. This novel work is a helpful means for the design and standardization process of the futureB5G and 6G network architecture.
description: 7 pages, 6 figures
Optimal percentage of inhibitory synapses in multi-task learning
Creators: name: Capano, Vittorio
name: Herrmann, Hans J.
name: de Arcangelis, Lucilla
Publisher: name: arXiv
Year: 2015
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Performing more tasks in parallel is a typical feature of complex brains. These are characterized by the coexistence of excitatory and inhibitory synapses, whose percentage in mammals is measured to have a typical value of 20-30\%. Here we investigate parallel learning of more Boolean rules in neuronal networks. We find that multi-task learning results from the alternation of learning and forgetting of the individual rules. Interestingly, a fraction of 30\% inhibitory synapses optimizes the overall performance, carving a complex backbone supporting information transmission with a minimal shortest path length. We show that 30\% inhibitory synapses is the percentage maximizing the learning performance since it guarantees, at the same time, the network excitability necessary to express the response and the variability required to confine the employment of resources.
description: 5 pages, 5 figures
Towards Asteroid Detection in Microlensing Surveys with Deep Learning
Creators: name: Cowan, Preeti
name: Bond, Ian A.
name: Reyes, Napoleon H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Asteroids are an indelible part of most astronomical surveys though only a few surveys are dedicated to their detection. Over the years, high cadence microlensing surveys have amassed several terabytes of data while scanning primarily the Galactic Bulge and Magellanic Clouds for microlensing events and thus provide a treasure trove of opportunities for scientific data mining. In particular, numerous asteroids have been observed by visual inspection of selected images. This paper presents novel deep learning-based solutions for the recovery and discovery of asteroids in the microlensing data gathered by the MOA project. Asteroid tracklets can be clearly seen by combining all the observations on a given night and these tracklets inform the structure of the dataset. Known asteroids were identified within these composite images and used for creating the labelled datasets required for supervised learning. Several custom CNN models were developed to identify images with asteroid tracklets. Model ensembling was then employed to reduce the variance in the predictions as well as to improve the generalisation error, achieving a recall of 97.67%. Furthermore, the YOLOv4 object detector was trained to localize asteroid tracklets, achieving a mean Average Precision (mAP) of 90.97%. These trained networks will be applied to 16 years of MOA archival data to find both known and unknown asteroids that have been observed by the survey over the years. The methodologies developed can be adapted for use by other surveys for asteroid recovery and discovery.
description: 15 pages, 17 figures, to be published in Astronomy and Computing
On the Interplay between TLS Certificates and QUIC Performance
Creators: name: Nawrocki, Marcin
name: Tehrani, Pouyan Fotouhi
name: Hiesgen, Raphael
name: Mücke, Jonas
name: Schmidt, Thomas C.
name: Wählisch, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we revisit the performance of the QUIC connection setup and relate the design choices for fast and secure connections to common Web deployments. We analyze over 1M Web domains with 272k QUIC-enabled services and find two worrying results. First, current practices of creating, providing, and fetching Web certificates undermine reduced round trip times during the connection setup since sizes of 35% of server certificates exceed the amplification limit. Second, non-standard server implementations lead to larger amplification factors than QUIC permits, which increase even further in IP spoofing scenarios. We present guidance for all involved stakeholders to improve the situation.
description: camera-ready
Inductive Graph Transformer for Delivery Time Estimation
Creators: name: Zhou, Xin
name: Wang, Jinglong
name: Liu, Yong
name: Wu, Xingyu
name: Shen, Zhiqi
name: Leung, Cyril
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Providing accurate estimated time of package delivery on users' purchasing pages for e-commerce platforms is of great importance to their purchasing decisions and post-purchase experiences. Although this problem shares some common issues with the conventional estimated time of arrival (ETA), it is more challenging with the following aspects: 1) Inductive inference. Models are required to predict ETA for orders with unseen retailers and addresses; 2) High-order interaction of order semantic information. Apart from the spatio-temporal features, the estimated time also varies greatly with other factors, such as the packaging efficiency of retailers, as well as the high-order interaction of these factors. In this paper, we propose an inductive graph transformer (IGT) that leverages raw feature information and structural graph data to estimate package delivery time. Different from previous graph transformer architectures, IGT adopts a decoupled pipeline and trains transformer as a regression function that can capture the multiplex information from both raw feature and dense embeddings encoded by a graph neural network (GNN). In addition, we further simplify the GNN structure by removing its non-linear activation and the learnable linear transformation matrix. The reduced parameter search space and linear information propagation in the simplified GNN enable the IGT to be applied in large-scale industrial scenarios. Experiments on real-world logistics datasets show that our proposed model can significantly outperform the state-of-the-art methods on estimation of delivery time. The source code is available at: https://github.com/enoche/IGT-WSDM23.
description: 9 pages, accepted to WSDM 2023
$^{29}$Si nuclear spins as a resource for donor spin qubits in silicon
Creators: name: Wolfowicz, Gary
name: Mortemousque, Pierre-Andre
name: Guichard, Roland
name: Simmons, Stephanie
name: Thewalt, Mike L. W.
name: Itoh, Kohei M.
name: Morton, John J. L.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nuclear spin registers in the vicinity of electron spins in solid state systems offer a powerful resource to address the challenge of scalability in quantum architectures. We investigate here the properties of $^{29}$Si nuclear spins surrounding donor atoms in silicon, and consider the use of such spins, combined with the donor nuclear spin, as a quantum register coupled to the donor electron spin. We find the coherence of the nearby $^{29}$Si nuclear spins is effectively protected by the presence of the donor electron spin, leading to coherence times in the second timescale - over two orders of magnitude greater than the coherence times in bulk silicon. We theoretically investigate the use of such a register for quantum error correction, including methods to protect nuclear spins from the ionisation/neutralisation of the donor, which is necessary for the re-initialisation of the ancillae qubits. This provides a route for multi-round quantum error correction using donors in silicon.
description: 6 pages, 4 figures