cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generalized Skyrme model with the loosely bound potential
Creators: name: Gudnason, Sven Bjarke
name: Zhang, Baiyang
name: Ma, Nana
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study a generalization of the loosely bound Skyrme model which consists of the Skyrme model with a sixth-order derivative term - motivated by its fluid-like properties - and the second-order loosely bound potential - motivated by lowering the classical binding energies of higher-charged Skyrmions. We use the rational map approximation for the Skyrmion of topological charge B=4, calculate the binding energy of the latter and estimate the systematic error in using this approximation. In the parameter space that we can explore within the rational map approximation, we find classical binding energies as low as 1.8% and once taking into account the contribution from spin-isospin quantization we obtain binding energies as low as 5.3%. We also calculate the contribution from the sixth-order derivative term to the electric charge density and axial coupling.
description: RevTeX: 33 pages, 14 figures; V2: comments and references added
Die Simulation eines Internationalen Kongresses – Ein Pilotprojekt zum bilingualen Mathematikunterricht
Creators: name: Lange, Diemut
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Zwar hat mittlerweile eine Ausweitung des bilingualen Unterrichts auf andere Fächer stattgefunden, das Fach Mathematik taucht im Kanon der bilingual unterrichteten Fächer jedoch nicht oder als ganz neues Fach auf. Gründe können in Vorbehalten von Mathematiklehrern bezüglich der Eigung des Faches gesehen werden: Mathematik sei eine neutrale Wissenschaft ohne interkulturelle Bezüge, biete kaum Kommunikationsanlässe und sei schwerer, wenn es in der Fremdsprache unterrichtet wird (Rolka 2004).
Prediction of the liquid-crystal phase behavior of hard right triangles from fourth-virial density-functional theories
Creators: name: Velasco, Enrique
name: Martinez-Raton, Yuri
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have used an extended Scaled-Particle Theory that incorporates four-body correlations through the fourth-order virial coefficient to analyse the orientational properties of a fluid of hard right-angle triangles. This fluid has been analysed by computer simulation studies, with clear indications of strong octatic correlations present in the liquid-crystal phase, although the more symmetric order tetratic phase would seem to be the most plausible candidate. Standard theories based on the second virial coefficient are unable to reproduce this behaviour. Our extended theory predicts that octatic correlations, associated to a symmetry under global rotations of the oriented fluid by $45^{\circ}$, are highly enhanced, but not enough to give rise to a thermodynamically stable phase with strict octatic symmetry. We discuss different scenarios to improve the theoretical understanding of the elusive octatic phase in this intriguing fluid.
description: 12 pages, 4 figures
The effect of Iodine Deficiency on the Academic Performance of School Children in Sodo Town, Southern Ethiopia
Creators: name: Wolka, Eskinder
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: Background: There are many reasons for children to underperform at school because of poor nutritional status, below average intelligence, socio-cultural environment and other environmental factors. Iodine deficiency disorder is a public health problem worldwide including Ethiopia and it is the major cause of preventable brain damage in children. Although there are studies on iodine deficiency in the country, its effect on academic performance is not well documented. Objective: This study intended to assess effect of Iodine Deficiency on academic performance of school children in Wolaita Sodo town, Southern Ethiopia. Methods: School based comparative cross sectional study on a sample population of 270 children with goiter and 264 without goiter was conducted in a purposively selected primary school in Sodo town, Southern Ethiopia from Dec. 2010 to Feb 2011. Total students in each class were examined for the presence of goiter and classified based on WHO recommendation. For every child with goiter, next child without goiter was selected from the same class. Pre-tested structured questionnaire was used to collect data on socio-demographic factors and information on students' academic performance was obtained from the school record. Multivariate logistic regression analysis was employed to see the effect of independent variables on the outcome variable. Ethical clearance was obtained from Research Ethics Committee of School of Public Health, College of Health Sciences, Addis Ababa University. Result: Among children with goiter higher proportion (54.8%) were females and proportion increase with age. Consuming foods (cabbage and cassava) was significantly associated with goiter (AOR=1.9; 95%CI=1.2, 2.9). The odds of scoring low school performance was higher among, children whose fathers were illiterate (AOR=1.9; 95%CI=1.1, 3.5) and absenteeism of more than four days (AOR=1.5; 95%CI=1.1, 2.21). Goiter was significantly associated with low academic performance (AOR=1.8; 95%CI=1.2, 2.5). Conclusion and recommendation: Goiter rate is significantly associated with consumption of goiterogens. Presence of goiter has negative effect on academic performance. Awareness on endemic goiter and its impact on school performance and emphasis on prevention and control by concerned bodies is recommended to alleviate the problem
Probing bursty star formation by cross-correlating extragalactic background light and galaxy surveys
Creators: name: Sun, Guochao
name: Lidz, Adam
name: Faisst, Andreas L.
name: Faucher-Giguère, Claude-André
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Understanding the star formation rate (SFR) variability and how it depends on physical properties of galaxies is important for developing and testing the theory of galaxy formation. We investigate how statistical measurements of the extragalactic background light (EBL) can shed light on this topic and complement traditional methods based on observations of individual galaxies. Using semi-empirical models of galaxy evolution and SFR indicators sensitive to different star formation timescales (e.g., H$α$ and UV continuum luminosities), we show that the SFR variability, quantified by the joint probability distribution of the SFR indicators (i.e., the bivariate conditional luminosity function), can be characterized as a function of galaxy mass and redshift through the cross-correlation between deep, near-infrared maps of the EBL and galaxy distributions. As an example, we consider combining upcoming SPHEREx maps of the EBL with galaxy samples from Rubin/LSST. We demonstrate that their cross-correlation over a sky fraction of $f_\mathrm{sky}\sim0.5$ can constrain the joint SFR indicator distribution at high significance up to $z\sim2.5$ for mass-complete samples of galaxies down to $M_{*}\sim10^9\,M_{\odot}$. These constraints not only allow models of different SFR variability to be distinguished, but also provide unique opportunities to investigate physical mechanisms that require large number statistics such as environmental effects. The cross-correlations investigated illustrate the power of combining cosmological surveys to extract information inaccessible from each data set alone, while the large galaxy populations probed capture ensemble-averaged properties beyond the reach of targeted observations towards individual galaxies.
description: 12 pages, 7 figures, MNRAS accepted
Coprimeness-preserving non-integrable extension to the two-dimensional discrete Toda lattice equation
Creators: name: Kamiya, Ryo
name: Kanki, Masataka
name: Mase, Takafumi
name: Tokihiro, Tetsuji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37K10, 37L60, 39A14

description: We introduce a so-called `coprimeness-preserving non-integrable' extension (another terminology is `quasi-integrable' extension) to the two-dimensional Toda lattice equation. We believe that this equation is the first example of such discrete equation defined over a three-dimensional lattice. We prove that all the iterates of the equation are irreducible Laurent polynomials of the initial data and that every pair of two iterates is co-prime, which indicate confined singularities of the equation. By reducing the equation to two- or one-dimensional lattices, we obtain coprimeness-preserving non-integrable extensions to the one-dimensional Toda lattice equation and the Somos-4 recurrence.
description: 18 pages, 1 figure
Φιλοπεριβαλλοντικές δράσεις και εφαρμογές για τον τουρίστα, μελέτη περίπτωσης Αεροδρόμιο Μακεδονία
Creators: name: Γκανταλίδου, Σταματία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Αειφόρος τουρισμός
Βιώσιμο αεροδρόμιο
Φιλοπεριβαλλοντικές δράσεις
Green tourism
Sustainable airport
Eco friendly actions

description: Στην παρακάτω έρευνα εξετάζονται οι φιλοπεριβαλλοντικές πρακτικές και δράσεις στο κομμάτι του τουρισμού της εναέριας μετακίνησης και τη διαμονή του επισκέπτη στον αερολιμένα «Μακεδονία». Αναφέρεται η Ευρωπαϊκή Πολιτική και οι δράσεις εταιρικής και ατομικής ευθύνης για τη μείωση περιβαλλοντικού αποτυπώματος καθώς το είδος των τουριστών με τους παράγοντες λήψης οικολογικής απόφασης. Ακολουθεί η καταγραφή από τους ρυπογόνους τομείς ενός αεροδρομίου που έρχεται σε επαφή με τον επισκέπτη και η συμβολή της τεχνολογίας. Έπειτα γίνεται η αναλυτική καταγραφή των συνθηκών, αποτελεσμάτων και δράσεων στη μελέτη περίπτωσης του αερολιμένα. Τέλος, έχει δημιουργηθεί η πράσινη διαδρομή του τουρίστα στον αερολιμένα, ακολουθούν τα συμπεράσματα και προτάσεις.
description: The following research examines the eco- friendly practices and actions in the field of air travel tourism and the passengers at “Makedonia” airport. Is described the European Policy, corporate and individual responsibility to reduce the environmental footprint, as well as the type of tourists with the factors of making an ecological action. Further is followed by an inventory of the polluting sectors taking place of an airport that comes into contact with the visitor and the contribution of technology. In the second part, is the detailed description of the conditions and actions in the airport of key study is made. Finally, the green route of the tourist in the airport created and then the conclusions and recommendations.
Bioactive 4-hydroxycinnamide and bioactivities of Polyalthia cerasoides
Creators: name: Kiatfuengfoo, Rachada
name: Prachayasittikul, Supaluk
name: Prachayasittikul, Virapong
name: Ruchirawat, Somsak
name: Suksrichavalit, Thummaruk
name: Treeratanapiboon, Lertyot
name: Worachartcheewan, Apilak
Publisher: name: Technische Universität Dortmund
Year: 2011
Subjects: subject: 4-hydroxycinnamide
subject: antimicrobials
subject: antioxidants
subject: Polyalthia cerasoides
subject: trace elements
subject: 610

description: Constituents from Polyalthia cerasoides, stem bark methanol extract, were previously documented. This study reports the first isolation of bioactive N-(4-hydroxy-β-phenethyl)-4-hydroxycinnamide (1) from ethyl acetate extract of the plant species including stigmasterol and a mixture of triterpenes from hexane and dichloromethane extracts. Trace essential elements were found in the hexane extract in ppm level. The plant extracts were evaluated for their antimicrobial and antioxidative activities. The dichloromethane extract displayed the highest activity against Corynebacterium diphtheriae NCTC 10356 with MIC of 32 μg/mL, as well as, the highest SOD activity with an IC50 of 4.51 μg/mL.
description: EXCLI Journal ; Vol. 10, 2011
Electroweak radiative corrections to polarized top quark pair production
Creators: name: Arbuzov, A.
name: Bondarenko, S.
name: Kalinovskaya, L.
name: Sadykov, R.
name: Yermolchyk, V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Electroweak effects in the $e^+e^- \to t \bar{t}$ annihilation process are described with taking into account polarization of the initial and final particles. We investigate the effects of complete one-loop electroweak radiative corrections and higher-order radiative effects to the total cross section and analyze different types of asymmetries for polarized initial and final states for typical energies and degrees of polarization of the ILC and CLIC projects. Numerical results are obtained with the help of Monte Carlo tools: the ReneSANCe event generator and the MCSANC integrator.
description: 16 pages, 5 tables, 7 figures
Health and Health Related Problems of the Elderly, in Daile Woreda, Southern Ethiopia
Creators: name: Dejene, Michael
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 1995

description: There are no studies dealing with the health problems of the elderly In Ethiopia. A cross sectional survey was conducted in Daile Woreda, Sidama Zone, Southern Ethiopia from September to December 1994 to determine the health and related problems in the elderly. One thousand and fifty three elders whose age 60 years and above were selected using multistage sampling procedure and included in the study. The male to female ratio of the study subjects was 1: 1.l7 with a mean age of 70.4 and standard deviation of ± 9.6 years. Eighty seven percent of the study subjects claimed that they were members of social and/or reI igious groups and only 1. 6 % of them I ive alone. Thirty seven percent of the study subjects were taking some forms of modern medication at the time of the interview and 9% of them had a hospital visit in the past one year. Headache, heart burn, problem of mastication and joint pain were found to be the most frequent reported ill health problems. Significant association was observed between certain disease complaints with that of female sex and increasing age. Significant number of elders who were divorced (OR=5.04, CI, 1.30, 19.55) and widowed (OR=12.35 , CI ,2.38, 64.11) are found to be psychotic. Thirty five percent and 16% of the elders were found to be impaired in Instrumental Activities of Daily Living (IADL) and Activities of Daily Living (ADL) respectively. This impairment is found to be significantly associated with increasing age, in males for IADL (OR=1.95, CI, 1.40,2.72) and in widowed elders (OR= 1.96, CI, 1.34, 2.87) for IADL and (OR=1.77, CI , 1.10,2.85) for ADL. Though the reported prevalence of symptoms of ill health and disability is high , the elders ability to work and support themselves and their families, their living in the extended family and their participation in certain social and/or religious organization was found to be encouraging. Further studies are recommended for identification of specific disease entities causing the largest prevalence of ill health.
Supernovae powered by magnetars that transform into black holes
Creators: name: Moriya, Takashi J.
name: Metzger, Brian D.
name: Blinnikov, Sergei I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Rapidly rotating, strongly magnetized neutron stars (magnetars) can release their enormous rotational energy via magnetic spin-down, providing a power source for bright transients such as superluminous supernovae. On the other hand, particularly massive (so-called supramassive) neutron stars require a minimum rotation rate to support their mass against gravitational collapse, below which the neutron star collapses to a black hole. We model the light curves of supernovae powered by magnetars which transform into black holes. Although the peak luminosities can reach high values in the range of superluminous supernovae, their post maximum light curves can decline very rapidly because of the sudden loss of the central energy input. Early black hole transformation also enhances the shock breakout signal from the magnetar-driven bubble relative to the main supernova peak. Our synthetic light curves of supernovae powered by magnetars transforming to black holes are consistent with those of some rapidly evolving bright transients recently reported by Arcavi et al. (2016).
description: 7 pages, 9 figures, 1 table, accepted by The Astrophysical Journal
Temperature Dependence of the Flux Line Lattice Transition into Square Symmetry in Superconducting LuNi2B2C
Creators: name: Abrahamsen, A. B.
name: Eskildsen, M. R.
name: Gammel, P. L.
name: Kogan, V. G.
name: Mortensen, K.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Magnetic Fields and Fragmentation of Filaments in the Hub of California-X
Creators: name: Chung, Eun Jung
name: Lee, Chang Won
name: Kwon, Woojin
name: Tafalla, Mario
name: Kim, Shinyoung
name: Soam, Archana
name: Cho, Jungyeon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 850 $μ$m polarization and $\rm C^{18}O (3-2)$ molecular line observations toward the X-shaped nebula in the California molecular cloud using the JCMT SCUBA-2/POL-2 and HARP instruments. The 850 $μ$m emission shows that the observed region includes two elongated filamentary structures (Fil1 and Fil2) having chains of regularly spaced cores. We measured the mass per unit length of the filament and found that Fil1 and Fil2 are thermally super- and subcritical, respectively, but both are subcritical if nonthermal turbulence is considered. The mean projected spacings ($Δ\bar S$) of cores in Fil1 and Fil2 are 0.13 and 0.16 pc, respectively. $Δ\bar S$ are smaller than $4\times$filament width expected in the classical cylinder fragmentation model. The large-scale magnetic field orientations shown by Planck are perpendicular to the long axes of Fil1 and Fil2, while those in the filaments obtained from the high-resolution polarization data of JCMT are disturbed, but those in Fil1 tend to have longitudinal orientations. Using the modified Davis-Chandrasekhar-Fermi (DCF) method, we estimated the magnetic field strengths ($B_{\rm pos}$) of filaments which are 110$\pm$80 and 90$\pm$60 $μ$G. We calculated the gravitational, kinematic, and magnetic energies of the filaments, and found that the fraction of magnetic energy is larger than 60 % in both filaments. We propose that a dominant magnetic energy may lead the filament to be fragmented into aligned cores as suggested by Tang et al., and a shorter core spacing can be due to a projection effect via the inclined geometry of filaments or due to a non-negligible, longitudinal magnetic fields in case of Fil1.
description: Accepted for publication in the ApJ. 18 pages, 11 figures, 2 tables
Unconventional Superconductivity in CeIrIn5 and CeCoIn5: Specific Heat and Thermal Conductivity Studies
Creators: name: Fisk, Z.
name: Jaime, M.
name: Movshovich, R.
name: Petrovic, C.
name: Thompson, J. D.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Determinants of Utilization of CHAs in Rural Communities
Creators: name: Mohammed, Seid
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 1989

description: A study of the determinants of uti li zation of community health agents among rural c omm unities was conducted in the di stri ct (Awraj a) of Buno-Bede 11 e, south western part of Ethiopia. The main objectives of the study were to determine the prevalence of utilization of CHAs and to see the relation between utilization of CHAs and knowledge, attitude and participation of the community. There were a total of 311 CHAs trained in the Awraja, up to May 1988. Only 221 were found during a survey conducted in May 1988. 80 PAs were randomly selected from those where a CHA had been found regard 1 ess of functionality. A structured questionnaire was administered to a systematic sampling of 2400 heads of households. It was found that 83.6% of the study popu 1 at i on used at least one service of the CHA i n the past year. The most used services were preventive and promotive activities, particularly , health education and home visits (59.7% and 58.0% respecti ' ely). The least used services were treatment activities, death and birth registration. Utilizers of CHA services had better access to safe water supply and sanitary facilities. People who are members of PPCAs, literate, have knowledge about CHAs and their serv ices, have a positive attitude towards CHAs and their se rvices, and participated in the selection of their CHAs and related matters are more likely to be utilizers of CHAs. It was also found that a positive attitude towards CHAs and their services was the best predictor of utilization of CHAs. v
MPEC 2023-S141 : 2023 SN3
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 SN3

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.
Warm Molecular Gas in the Central Parsecs of the Buried Nucleus of NGC 4418 Traced with the Fundamental CO Ro-vibrational Absorptions
Creators: name: Ohyama, Youichi
name: Onishi, Shusuke
name: Nakagawa, Takao
name: Matsumoto, Kosei
name: Isobe, Naoki
name: Shirahata, Mai
name: Baba, Shunsuke
name: Sakamoto, Kazushi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigated the inner buried nucleus of a nearby luminous infrared galaxy NGC 4418 using high-resolution spectroscopy of fundamental carbon monoxide (CO) ro-vibrational absorptions around $4.67 μ$m for the first time. This method allowed us to examine the physical and kinematical properties in the hot inner region of this nucleus. We detected a series of both very deep (partly saturated) $^{12}$CO and moderately deep (optically thin) $^{13}$CO absorption lines and inferred a large column density ($N_\mathrm{H2}=(5\pm3)\times10^{23}$ cm$^{-2}$ in front of the $5 μ$m photosphere) of warm ($T_\mathrm{ex}\simeq170$ K) molecular gas by assuming an isothermal plane-parallel slab illuminated by a compact background MIR-emitting source. We modeled that the warm CO absorber almost covers the central heating source and that it is an inner layer around the $5 μ$m photosphere (at $r=$several pc) of a compact shroud of gas and dust ($d\sim100$ pc). The width of the absorption lines ($110$ km s$^{-1}$) and their small deviation from the systemic velocity ($<10$ km s$^{-1}$) are consistent with a warm and turbulent layer with little bulk motion in the radial direction.
description: 18 pages, 3 figures, 2 tables, accepted for publication in ApJ
Coupled dynamics of node and link states in complex networks: A model for language competition
Creators: name: Carro, Adrián
name: Toral, Raúl
name: Miguel, Maxi San
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Inspired by language competition processes, we present a model of coupled evolution of node and link states. In particular, we focus on the interplay between the use of a language and the preference or attitude of the speakers towards it, which we model, respectively, as a property of the interactions between speakers (a link state) and as a property of the speakers themselves (a node state). Furthermore, we restrict our attention to the case of two socially equivalent languages and to socially inspired network topologies based on a mechanism of triadic closure. As opposed to most of the previous literature, where language extinction is an inevitable outcome of the dynamics, we find a broad range of possible asymptotic configurations, which we classify as: frozen extinction states, frozen coexistence states, and dynamically trapped coexistence states. Moreover, metastable coexistence states with very long survival times and displaying a non-trivial dynamics are found to be abundant. Interestingly, a system size scaling analysis shows, on the one hand, that the probability of language extinction vanishes exponentially for increasing system sizes and, on the other hand, that the time scale of survival of the non-trivial dynamical metastable states increases linearly with the size of the system. Thus, non-trivial dynamical coexistence is the only possible outcome for large enough systems. Finally, we show how this coexistence is characterized by one of the languages becoming clearly predominant while the other one becomes increasingly confined to "ghetto-like" structures: small groups of bilingual speakers arranged in triangles, with a strong preference for the minority language, and using it for their intra-group interactions while they switch to the predominant language for communications with the rest of the population.
description: 21 pages, 15 figures
The structure and function of PETAL LOSS, a trihelix transcription factor that regulates sepal and petal development in Arabidopsis
Creators: name: Kaplan-Levy., Ruth N.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
MPEC 2023-S142 : 2023 SO3
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 SO3

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.
Direct Evidence for Block-by-Block Growth in High-Temperature Superconductor Ultrathin Films
Creators: name: Arias, D.
name: Grogger, W.
name: León, C.
name: Sefrioui, Z.
name: Varela, M.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Neutrino masses in the $SU(4)_L \otimes U(1)_X$ electroweak extension of the standard model
Creators: name: Palacio, Guillermo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the neutrino mass generation in the $SU(4)_L \otimes U(1)_X$ electroweak extension of the standard model by considering non-renormalizable dimension five effective operators. It is shown that there exist two topologies for the realizations of such an operator at the tree-level and for one of the three-family models is explore the neutrino phenomenology after extending its particle content with an $SU(4)_L$ fermion singlet and a scalar decuplet. Constraints in the available parameters space of the model are partially discussed.
description: 14 pages, 2 figures, Accepted to IJMPA
Reducing the uncertainty on the Hubble constant up to 35\% with an improved statistical analysis: different best-fit likelihoods for Supernovae Ia, Baryon Acoustic Oscillations, Quasars, and Gamma-Ray Bursts
Creators: name: Dainotti, Maria Giovanna
name: Bargiacchi, Giada
name: Bogdan, Małgorzata
name: Lenart, Aleksander Łukasz
name: Iwasaki, Kazunari
name: Capozziello, Salvatore
name: Zhang, Bing
name: Fraija, Nissim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Cosmological models and their parameters are widely debated, especially about whether the current discrepancy between the values of the Hubble constant, $H_{0}$, obtained by type Ia supernovae (SNe Ia), and the Planck data from the Cosmic Microwave Background Radiation could be alleviated when alternative cosmological models are considered. Thus, combining high-redshift probes, such as Gamma-Ray Bursts (GRBs) and Quasars (QSOs), together with Baryon Acoustic Oscillations (BAO) and SNe Ia is important to assess the viability of these alternative models and if they can cast further light on the Hubble tension. In this work, for GRBs, we use a 3-dimensional relation between the peak prompt luminosity, the rest-frame time at the end of the X-ray plateau, and its corresponding luminosity in X-rays: the 3D Dainotti fundamental plane relation. Regarding QSOs, we use the Risaliti-Lusso relation among the UV and X-ray luminosities for a sample of 2421 sources. We correct both the QSO and GRB relations by accounting for selection and evolutionary effects with a reliable statistical method. We here use both the traditional Gaussian likelihoods ($\cal L_G$) and the new best-fit likelihoods ($\cal L_N$) to infer cosmological parameters of a non-flat $Λ$CDM and flat $w$CDM models. We obtain for all the parameters reduced uncertainties, up to $35\%$ for $H_{0}$, when applying the new $\cal L_N$ likelihoods in place of the Gaussian ones. Our results remain consistent with a flat $Λ$CDM model, although with a shift of the dark energy parameter $w$ toward $w<-1$ and a curvature density parameter toward $Ω_k<0$.
description: Accepted for publication at ApJ
Deep Learning Applications Based on WISE Infrared Data: Classification of Stars, Galaxies and Quasars
Creators: name: Zhao, Guiyu
name: Qiu, Bo
name: Luo, A-Li
name: Guo, Xiaoyu
name: Yao, Lin
name: Wang, Kun
name: Liu, Yuanbo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The Wide-field Infrared Survey Explorer (WISE) has detected hundreds of millions of sources over the entire sky. However, classifying them reliably is a great challenge due to degeneracies in WISE multicolor space and low detection levels in its two longest-wavelength bandpasses. In this paper, the deep learning classification network, IICnet (Infrared Image Classification network), is designed to classify sources from WISE images to achieve a more accurate classification goal. IICnet shows good ability on the feature extraction of the WISE sources. Experiments demonstrates that the classification results of IICnet are superior to some other methods; it has obtained 96.2% accuracy for galaxies, 97.9% accuracy for quasars, and 96.4% accuracy for stars, and the Area Under Curve (AUC) of the IICnet classifier can reach more than 99%. In addition, the superiority of IICnet in processing infrared images has been demonstrated in the comparisons with VGG16, GoogleNet, ResNet34, MobileNet, EfficientNetV2, and RepVGG-fewer parameters and faster inference. The above proves that IICnet is an effective method to classify infrared sources.
Intermediate Health Outcomes Of Reported Mor Bidity
Creators: name: Lemma, Ferew
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 1989

description: A cohort study was carried out in the Keffa Region of Southwestern Ethiopia to investigate intermed i ate (six month) hea l th status outcomes of reported morbidity and identify their determinants. At both the initial (time 1) and six month follow up survey (time 2), cough, diarrheas, fever, musculoskeletal disorders, and abdominal conditions (worms, cramps) were the most frequently re ported illnesses. Those who were ill at time 1 were as likely to remain ill (46%) as to get better (54%) at time 2. While less likely to become ill, 38% of those well at time 1 reported an illness at time 2. By the sixth month follow-up death had occurred most frequently among those who had eye disease and fever at time 1 (7.8% and 7.7%) respectively. From the 516 subjects who were ill at time 1, only 5 . 0% repo rted the same complaint at time 2 . Important pred i ctors for morbidity at T1, based upon multiple regression , were level of education, marital staus, and sanita ry practices. Important predictors of illness at T2 were traditional practices, type of housing, and age. This invest igation has shown that reported morbidity is assoc i ated with seve ral intermediate adverse health consequences and has quantified the relative impact of These findings morbidity in further emphasize identifying pri ority specific illness categories. the importance of repo rted health problems and in assessing a population's health status.
The polarization of light and the Malus' law using smartphones
Creators: name: Monteiro, Martín
name: Stari, Cecilia
name: Cabeza, Cecilia
name: Marti, Arturo C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics Education (physics.ed-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: Originally an empirical law, nowadays Malus' law is seen as a key experiment to demonstrate the transverse nature of electromagnetic waves, as well as the intrinsic connection between optics and electromagnetism. In this work, a simple and inexpensive setup is proposed to quantitatively verify the nature of polarized light. A flat computer screen serves as a source of linear polarized light and a smartphone (possessing ambient light and orientation sensors) is used, thanks to its built-in sensors, to experiment with polarized light and verify the Malus' law.
description: 5 pages, 3 figures, in this version the manuscript has been reorganized and several typos have been corrected
MPEC 2023-S143 : 2023 SP3
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 SP3

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.
Spectral Stacking of Radio-Interferometric Data
Creators: name: Neumann, Lukas
name: Brok, Jakob S. den
name: Bigiel, Frank
name: Leroy, Adam
name: Usero, Antonio
name: Barnes, Ashley T.
name: Bešlić, Ivana
name: Eibensteiner, Cosima
name: Held, Malena
name: Jiménez-Donaire, María J.
name: Pety, Jérôme
name: Rosolowsky, Erik W.
name: Schinnerer, Eva
name: Williams, Thomas G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Mapping molecular line emission beyond the bright low-J CO transitions is still challenging in extragalactic studies, even with the latest generation of (sub-)mm interferometers, such as ALMA and NOEMA. We summarise and test a spectral stacking method that has been used in the literature to recover low-intensity molecular line emission, such as HCN(1-0), HCO+(1-0), and even fainter lines in external galaxies. The goal is to study the capabilities and limitations of the stacking technique when applied to imaged interferometric observations. The core idea of spectral stacking is to align spectra of the low S/N spectral lines to a known velocity field calculated from a higher S/N line expected to share the kinematics of the fainter line, e.g., CO(1-0) or 21-cm emission. Then these aligned spectra can be coherently averaged to produce potentially high S/N spectral stacks. Here, we use imaged simulated interferometric and total power observations at different signal-to-noise levels, based on real CO observations. For the combined interferometric and total power data, we find that the spectral stacking technique is capable of recovering the integrated intensities even at low S/N levels across most of the region where the high S/N prior is detected. However, when stacking interferometer-only data for low S/N emission, the stacks can miss up to 50% of the emission from the fainter line. A key result of this analysis is that the spectral stacking method is able to recover the true mean line intensities in low S/N cubes and to accurately measure the statistical significance of the recovered lines. To facilitate the application of this technique we provide a public Python package, called PyStacker.
description: 10 pages, 10 figures, accepted for pub in A&A, Apr 28, 2023
A catalog of collected debris disks: properties, classifications and correlations between disks and stars/planets
Creators: name: Cao, Peng-cheng
name: Liu, Qiong
name: Liao, Neng-Hui
name: Yang, Qian-cheng
name: Huang, Dong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have collected a catalog of 1095 debris disks with properties and classification (resolved, planet, gas) information. From the catalog, we defined a less biased sample with 612 objects and presented the distributions of their stellar and disk properties to search for correlations between disks and stars. We found debris disks were widely distributed from B to M-type stars while planets were mostly found around solar-type stars, gases were easier to detect around early-type stars and resolved disks were mostly distributed from A to G- type stars. The fractional luminosity dropped off with stellar age and planets were mostly found around old stars while gas-detected disks were much younger. The dust temperature of both one-belt systems and cold components in two-belt systems increased with distance while decreasing with stellar age. In addition, we defined a less biased planet sample with 211 stars with debris disks but no planets and 35 stars with debris disks and planets and found the stars with debris disks and planets had higher metallicities than stars with debris disks but no planets. Among the 35 stars with debris disks and planets, we found the stars with disks and cool Jupiters were widely distributed with age from 10 Myr to 10 Gyr and metallicity from -1.56 to 0.28 while the other three groups tended to be old (> 4Gyr) and metal-rich (> -0.3). Besides, the eccentricities of cool Jupiters are distributed from 0 to 0.932 wider than the other three types of planets (< 0.3).
description: 34 pages, 12 figures, 3 tables, Accepted for publication in RAA
Geriatric assessment predicts hospitalization frequency and long-term care use in older adult cancer survivors
Creators: name: Guerard, E.
name: Lund, J.L.
name: Deal, A.M.
name: Pergolotti, M.
name: Dunham, L.
name: Williams, G.R.
name: Muss, H.B.
name: Chang, Y.
name: Kenzik, K.
name: Sanoff, H.K.
Publisher: name: American Society of Clinical Oncology
Year: 2019

description: PURPOSE The association between geriatric assessment (GA)–identified impairments and long-term health care use in older cancer survivors remains unknown. Our objective was to evaluate whether a GA performed at cancer diagnosis was predictive of hospitalizations and long-term care (LTC) use in older adult cancer survivors. METHODS Older adults with GA performed between 3 months before through 6 months after diagnosis were included (N = 125). Patients with Medicare Parts A and B coverage and no managed care were identified. Hospitalizations and LTC use (skilled nursing or assisted living) were assessed up to 5 years postdiagnosis. GA risk measures were evaluated in separate Poisson models estimating the relative risk (RR) for hospital and LTC visits, adjusting for age and Charlson comorbidity score. RESULTS The mean age of patients was 74 years, and the majority were female (80%) and white (90%). Breast cancer (64%) and early-stage disease (stages 0 to III, 77%) were common. Prefrail/frail status (RR, 2.5; P, .001), instrumental activities of daily living impairment (RR, 5.47; P, .001), and limitations in climbing stairs (RR, 2.94; P, .001) were associated with increased hospitalizations. Prefrail/frail status (RR, 1.86; P, .007), instrumental activities of daily living impairment (RR, 4.58; P, .001), presence of falls (RR, 6.73; P, .001), prolonged Timed Up and Go (RR, 5.45; P, .001), and limitations in climbing stairs (RR, 1.89; P, .005) were associated with LTC use. CONCLUSION GA-identified impairments were associated with increased hospitalizations and LTC use among older adults with cancer. GA-focused interventions should be targeted toward high-risk patients to reduce long-term adverse health care use in this vulnerable population.
Wave Function Renormalization and Flow of Couplings in Asymptotically Safe Quantum Gravity
Creators: name: Kawai, Hikaru
name: Ohta, Nobuyoshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The importance of the proper treatment of the wave function renormalization in the renormalization group analysis of quantum gravity is pointed out. The renormalization factor, sometimes called an inessential coupling, can be used to fix any one of the coupling constants, with the exception of the coupling constants that remain unchanged by the rescaling of the field. Choosing to fix the cosmological constant, we propose to use a new regulator to obtain the renormalization group equations for invariant couplings which tell us the flow of the Newton and $R^2$ couplings. We find that the Newton coupling reaches a nontrivial ultraviolet fixed point (FP) and becomes small in the low energy, but find only asymptotically free FP of the $R^2$ couplings for the higher-derivative gauge fixing and regulator. For the asymptotically free FP, we find that both of the two independent terms are relevant operators in the high energy. It is noted that the existence of nontrivial FPs may depend on the choice of the gauge and regulator.
description: 16 pages, 8 figures, v2: Minor corrections, refs. added
Biotechnological applications of fourier transform infrared spectroscopy and multivariate statistics
Creators: name: Kansiz., Mustafa
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Fast phase gates with trapped ions
Creators: name: Palmero, M.
name: Martínez-Garaot, S.
name: Leibfried, D.
name: Wineland, D. J.
name: Muga, J. G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We implement faster-than-adiabatic two-qubit phase gates using smooth state-dependent forces. The forces are designed to leave no final motional excitation, independently of the initial motional state in the harmonic, small-oscillations limit. They are simple, explicit functions of time and the desired logical phase of the gate, and are based on quadratic invariants of motion and Lewis-Riesenfeld phases of the normal modes.
description: 14 pages, 9 figures
A spectroscopic thermometer: individual vibrational band spectroscopy with the example of OH in the atmosphere of WASP-33b
Creators: name: Wright, Sam O. M.
name: Nugroho, Stevanus K.
name: Brogi, Matteo
name: Gibson, Neale P.
name: de Mooij, Ernst J. W.
name: Waldmann, Ingo
name: Tennyson, Jonathan
name: Kawahara, Hajime
name: Kuzuhara, Masayuki
name: Hirano, Teruyuki
name: Kotani, Takayuki
name: Kawashima, Yui
name: Masuda, Kento
name: Birkby, Jayne L.
name: Watson, Chris A.
name: Tamura, Motohide
name: Zwintz, Konstanze
name: Harakawa, Hiroki
name: Kudo, Tomoyuki
name: Hodapp, Klaus
name: Jacobson, Shane
name: Konishi, Mihoko
name: Kurokawa, Takashi
name: Nishikawa, Jun
name: Omiya, Masashi
name: Serizawa, Takuma
name: Ueda, Akitoshi
name: Vievard, Sébastien
name: Yurchenko, Sergei N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Individual vibrational band spectroscopy presents an opportunity to examine exoplanet atmospheres in detail by distinguishing where the vibrational state populations of molecules differ from the current assumption of a Boltzmann distribution. Here, retrieving vibrational bands of OH in exoplanet atmospheres is explored using the hot Jupiter WASP-33b as an example. We simulate low-resolution spectroscopic data for observations with the JWST's NIRSpec instrument and use high resolution observational data obtained from the Subaru InfraRed Doppler instrument (IRD). Vibrational band-specific OH cross section sets are constructed and used in retrievals on the (simulated) low and (real) high resolution data. Low resolution observations are simulated for two WASP-33b emission scenarios: under the assumption of local thermal equilibrium (LTE) and a toy non-LTE model for vibrational excitation of selected bands. We show that mixing ratios for individual bands can be retrieved with sufficient precision to allow the vibrational population distributions of the forward models to be reconstructed. A simple fit for the Boltzmann distribution in the LTE case shows that the vibrational temperature is recoverable in this manner. For high resolution, cross-correlation applications, we apply the individual vibrational band analysis to an IRD spectrum of WASP-33b, applying an 'un-peeling' technique. Individual detection significances for the two strongest bands are shown to be in line with Boltzmann distributed vibrational state populations consistent with the effective temperature of the WASP-33b atmosphere reported previously. We show the viability of this approach for analysing the individual vibrational state populations behind observed and simulated spectra including reconstructing state population distributions.
description: Submitted for publication in AJ
Extreme lensing induces spectro-temporal correlations in black-hole signals
Creators: name: Hadar, Shahar
name: Harikesh, Sreehari
name: Chelouche, Doron
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Rapid progress in electromagnetic black hole observation presents a theoretical challenge: how can the universal signatures of extreme gravitational lensing be distilled from stochastic astrophysical signals? With this motivation, the two-point correlation function of specific intensity fluctuations across image positions, times, and frequencies is here considered. The contribution of strongly deflected light rays, those which make up the photon ring, is analytically computed for a Kerr black hole illuminated by a simple geometric-statistical emission model. We subsequently integrate over the image to yield a spectro-temporal correlation function which is relevant for unresolved sources. Finally, some observational aspects are discussed and a preliminary assessment of detectability with current and upcoming missions is provided.