cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Searching for Stars Closely Encountering with the Solar System
Creators: name: Bobylev, Vadim V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Based on a new version of the Hipparcos catalog and currently available radial velocity data, we have searched for stars that either have encountered or will encounter the solar neighborhood within less than 3 pc in the time interval from -2 Myr to +2 Myr. Nine new candidates within 30 pc of the Sun have been found. To construct the stellar orbits relative to the solar orbit, we have used the epicyclic approximation. We show that, given the errors in the observational data, the probability that the well-known star HIP 89 825 (GL 710) encountering with the Sun most closely falls into the Oort cloud is 0.86 in the time interval 1.45-+0.06 Myr. This star also has a nonzero probability, 0.0001, of falling into the region d<1000 AU, where its influence on Kuiper Belt objects becomes possible.
description: 11 pages, 3 figures
Sample size determination in superiority or non-inferiority clinical trials with time-to-event data under exponential, Weibull and Gompertz distributions
Creators: name: Han, Dong
name: Hou, Yawen
name: Ou, Chunquan
name: Chen, Zheng
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: To examine the effect of exponential, Weibull and Gompertz distributions on sample size determination for superiority trials (STs) or non-inferiority trials (NTs) with time-to-event data based on proportional hazard model, we present two sample size formulas for STs or NTs based on Weibull and Gompertz distributions, respectively. The formulas are compared with the current exponential formula to examine their performance. The simulation results show that the sample size formula based on the Weibull distribution is the most robust among the three formulas in STs or NTs. We suggest that recognizing the appropriate distribution in advance is beneficial for proper project planning and that assuming a Weibull distributed survival time is most advantageous in STs or NTs.
Sense-making in learning mathematics across languages and countries : cases of multilingual students in a weekend Japanese school (hoshuko)
Creators: name: Saito, Tsubasa
Publisher: name: University of British Columbia
Year: 2024

description: Even if students move to a different country and successfully use a new language, it does not follow that they can learn and do mathematics in the same way as in their home country. These students can be living in the in-between space where linguistic and cultural differences might affect their approaches to learning mathematics. This qualitative nested-case study investigated the mathematics learning of 14 high school students studying mathematics simultaneously in English at a Canadian school and in Japanese at a Japanese school (hoshuko) within a Canadian city. Data collection included Zoom video-recorded initial individual interviews with participants, paired tasks in which participants crafted original mathematics word problems in both English and Japanese, and follow-up individual interviews. Data were analyzed using qualitative content analysis of students’ perspectives and experiences of learning mathematics and their attention to word problem structure, written form, mathematical structure, incorporation of personal experience in narratives, and language choice in shaping their word problems. Data from three focal pairs were then analyzed to provide a deeper understanding of their sense-making of word problems. To provide further insight into participants’ experience, word problems from several representative Canadian textbooks and a Japanese textbook were analyzed in terms of their structure, content, and relationship to local educational traditions and contexts. Findings indicate that while students learned mathematics comprehensively in both languages and contexts, they perceived Japanese and Canadian mathematics as possessing different features. Some students described learning mathematics in hoshuko as “deep,” and learning in Canadian schools as “wide”. These students reported that Japanese mathematics classrooms often explore concepts via an abstract problem-centered approach, while Canadian classrooms focus more on content applicable to real-world contexts. In moving between languages and cultures, students reported learning mathematics comprehensively by finding commonalities and connections based on mathematical words and concepts in both English and Japanese. Word problem tasks revealed that students’ sense-making manifested inconsistently across the languages (e.g., Japanese word problems often omitted the context). These findings offer support to educators in understanding the lived challenges of multilingual　students and how they perceive and negotiate cultural and linguistic differences in mathematics education.
title: قراءة في التاريخ الاجتماعي لواحة المويجعي في منتصف القرن العشرين/ شمسة حمد الظاهري.
Creators: name: الظاهري، شمسة حمد العبد
Publisher: name: الأرشيف والمكتبة الوطنية
Year: 2015
Subjects: قصر المويجعي - العين - أبو ظبي (الإمارات العربية المتحدة إمارة) - ما قبل 1971
العين - أبو ظبي (الإمارات العربية المتحدة إمارة) - تاريخ - الأحوال الاجتماعية - ما قبل 1971

المويجعي أرض مغلّة في أقصى غرب واحات العين وضمن دائرتها. كانت أشبه بضيعة زراعية لآل نهيان ، ثم أصبح مركز نفوذهم الرئيس في المناطق الشرقية لإمارة أبوظبي. اسْتوطِنت لغزارة مياهها، ولطبيعتها الخلابة، ولموقعها الوسطى بين ممتلكات الشيخ خليفة بن زايد الأول (1855-1945)- كبير أبناء مؤسس إمارة أبو ظبي الشيخ زايد بن خليفة آل نهيان (1855-1909)- الزراعية الممتدة من واحة المعترض إلى المسعودي في الطرف الشمالي من العين، بعد أن اتخذها مكاناً للاصطياف مع أتباعه هرباً من حرّ الساحل القاتل.
Additional file 1 of Comparative epigenomics reveals the impact of ruminant-specific regulatory elements on complex traits
Creators: name: Chen, Siqian
name: Liu, Shuli
name: Shi, Shaolei
name: Jiang, Yifan
name: Cao, Mingyue
name: Tang, Yongjie
name: Li, Wenlong
name: Liu, Jianfeng
name: Fang, Lingzhao
name: Yu, Ying
name: Zhang, Shengli
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. The overview design of this study. Figure S2. General characteristics of ChIP-seq, ATAC-seq, and DNA methylation data in six mammals. Figure S3. The assessment of the mapping accuracy for putative regulatory elements (REs). Figure S4. Cluster analysis of the six mammals across multi-omics. Figure S5. Dynamic changes of REs across species. Figure S6. Distributions of averaged epigenomic mark signals of four different types of regulatory elements (REs) across eight tissues in cattle. Figure S7. The expression levels (transcripts per million, TPM) of putative target genes of six types of lineage-specific regulatory elements across cattle tissues. Figure S8. Phylogenetic trees of four categories of genes. Figure S9. The number of enhancers contributes to increasing gene expression levels. Figure S10. The number of promoters contributes to increasing gene expression levels. Figure S11. SNPs were enriched in regulatory elements (REs). Figure S12. Comparison of human and mouse regulatory regions in the current study with those annotated in Ensembl and VISTA. Figure S13. The diagram of luciferase reporters used in this study. The red boxes represent the restriction sites of DGAT1.
Jamming in Systems Composed of Frictionless Ellipse-Shaped Particles
Creators: name: Mailman, Mitch
name: Schreck, Carl F.
name: O'Hern, Corey S.
name: Chakraborty, Bulbul
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the structural and mechanical properties of jammed ellipse packings, and find that the nature of the jamming transition in these systems is fundamentally different from that for spherical particles. Ellipse packings are generically hypostatic with more degrees of freedom than constraints. The spectra of low energy excitations possess two gaps and three distinct branches over a range of aspect ratios. In the zero compression limit, the energy of the modes in the lowest branch increases {\it quartically} with deformation amplitude, and the density of states possesses a $δ$-function at zero frequency. We identify scaling relations that collapse the low-frequency part of the spectra for different aspect ratios. Finally, we find that the degree of hypostaticity is determined by the number of quartic modes of the packing.
description: 4 pages, 4 figures
ТВОРЧЕСТВО М. А. БУЛГАКОВА В РАЗНЫХ ВИДАХ ИСКУССТВА"
Creators: name: Эшонкулов, Шахзод
Publisher: name: Zenodo
Year: 2025

description: Творчество Михаила Афанасьевича Булгакова отличается уникальным стилем повествования, насыщенным языком и глубоким философским содержанием. Булгаков умело сочетал различные литературные жанры, создавая неповторимые произведения, актуальные и для современного читателя.
Star Clusters in Pseudo-Bulges of Spiral Galaxies
Creators: name: Di Nino, Daiana
name: Trenti, Michele
name: Stiavelli, Massimo
name: Carollo, C. Marcella
name: Scarlata, Claudia
name: Wyse, Rosemary F. G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a study of the properties of the star-cluster systems around pseudo-bulges of late-type spiral galaxies using a sample of 11 galaxies with distances from 17 to 37 Mpc. Star clusters are identified from multiband HST ACS and WFPC2 imaging data by combining detections in 3 bands (F435W and F814W with ACS and F606W with WFPC2). The photometric data are then compared to population synthesis models to infer the masses and ages of the star clusters. Photometric errors and completeness are estimated by means of artificial source Monte Carlo simulations. Dust extinction is estimated by considering F160W NICMOS observations of the central regions of the galaxies, augmenting our wavelength coverage. In all galaxies we identify star clusters with a wide range of ages, from young (age < 8 Myr) blue clusters, with typical mass of 10^3 Msun to older (age > 100-250 Myr), more massive, red clusters. Some of the latter might likely evolve into objects similar to the Milky Way's globular clusters. We compute the specific frequencies for the older clusters with respect to the galaxy and bulge luminosities. Specific frequencies relative to the galaxy light appear consistent with the globular cluster specific frequencies of early-type spirals. We compare the specific frequencies relative to the bulge light with the globular cluster specific frequencies of dwarf galaxies, which have a surface-brightness profile that is similar to that of the pseudo-bulges in our sample. The specific frequencies we derive for our sample galaxies are higher than those of the dwarf galaxies, supporting an evolutionary scenario in which some of the dwarf galaxies might be the remnants of harassed late-type spiral galaxies which hosted a pseudo-bulge.
description: 34 pages, 9 figures, AJ accepted
High Availability Cluster System for Local Disaster Recovery with Markov Modeling Approach
Creators: name: Lwin, T. T.
name: Thein, T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: The need for high availability (HA) and disaster recovery (DR) in IT environment is more stringent than most of the other sectors of enterprises. Many businesses require the availability of business-critical applications 24 hours a day, seven days a week, and can afford no data loss in the event of a disaster. It is vital that the IT infrastructure is resilient with regard to disruption, even site failures, and that business operations can continue without significant impact. As a result, DR has gained great importance in IT. Clustering of multiple industries standard servers together to allow workload sharing and fail-over capabilities is a low cost approach. In this paper, we present the availability model through Semi-Markov Process (SMP) and also analyze the difference in downtime of the SMP model and the approximate Continuous Time Markov Chain (CTMC) model. To acquire system availability, we perform numerical analysis and SHARPE tool evaluation.
description: International Journal of Computer Science Issues, IJCSI Volume 6, Issue 2, pp25-32, November 2009
Dichotomy between large local and small ordered magnetic moment in Iron-based superconductors
Creators: name: Hansmann, P.
name: Arita, R.
name: Toschi, A.
name: Sakai, S.
name: Sangiovanni, G.
name: Held, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study a four band model for iron-based superconductors within local density approximation + dynamical mean field theory (LDA+DMFT). This successfully reproduces the results of models which take As p degrees of freedom explicitly into account and has several physical advantages over the standard five d-band model. Our findings reveal that the new superconductors are more strongly correlated than their single-particle properties suggest. Two-particle correlation functions unveil the dichotomy between local and ordered magnetic moments in these systems, calling for further experiments to better resolve the short time scale spin dynamics.
description: 4 pages, 3 figures
Heavy baryon mass spectrum from lattice QCD with 2+1 dynamical sea quark flavors
Creators: name: Na, Heechang
name: Gottlieb, Steven
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the mass differences of charm and bottom heavy baryons, using MILC lattice gauge configurations with 2+1 dynamical sea quark flavors. We extend our previous work to three lattice spacings: fine (a~0.09), coarse (a~0.12), and medium-coarse (a~0.15) ensembles. For extrapolations and interpolations, we apply simultaneous quadratic fits and simple linear fits with the full QCD data points for the valence quark masses as well as the sea quark masses.
description: 7 pages, 4 figures, 1 table, talk presented at Lattice 2008 (Hadron spectroscopy)
Azimuthal spin asymmetries in light-cone constituent quark models
Creators: name: Boffi, S.
name: Efremov, A. V.
name: Pasquini, B.
name: Schweitzer, P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present results for all leading-twist azimuthal spin asymmetries in semi-inclusive lepton-nucleon deep-inelastic scattering due to T-even transverse-momentum dependent parton distribution functions on the basis of a light-cone constituent quark model. Attention is paid to discuss the range of applicability of the model, especially with regard to the scale dependence of the observables and the transverse-momentum dependence of the distributions. We find good agreement with available experimental data and present predictions to be further tested by future CLAS, COMPASS and HERMES data.
description: 23 pages, 14 figures, 1 table
Study of magnetic interactions in a spin liquid, Sr3NiPtO6 using density functional approach
Creators: name: Pandey, Sudhir K.
name: Maiti, Kalobaran
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the magnetic interactions in Sr3NiPtO6, characterized to be a spin liquid using ab initio calculations. The results reveal a novel metal to insulator transition due to finite exchange interaction strength; the magnetic solutions (independent of magnetic ordering) are large band gap insulators, while the non-magnetic solution is metallic. The Ni moment is found to be large and the coupling among intra-chain Ni moments is antiferromagnetic unlike other compounds in this family. These results, thus, reveal the importance of intra-chain antiferromagnetic interaction in addition to geometrical frustration to derive spin liquid phase.
description: Five figures
Fast Winds and Mass Loss from Metal-Poor Field Giants
Creators: name: Dupree, A. K.
name: Smith, G. H.
name: Strader, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Spectra of the He I 10830 Angstrom line were obtained with NIRSPEC on the Keck 2 telescope for metal-deficient field giant stars. This line is ubiquitous in stars with T_eff greater than 4500K and M_V fainter than -1.5. Fast outflows are detected from the majority of stars and about 40 percent of the outflows have sufficient speed to allow escape of material from the star as well as from a globular cluster. Outflow speeds and line strengths do not depend on metallicity suggesting the driving mechanism for these winds derives from magnetic and/or hydrodynamic processes. Gas outflows are present in every luminous giant, but are not detected in all stars of lower luminosity indicating possible variability. Mass loss rates ranging from 3X10(-10) to 6X10(-8) solar mass/yr estimated from the Sobolev approximation represent values with evolutionary significance for red giant branch (RGB) and red horizontal branch (RHB) stars. We estimate that 0.2 M_sun will be lost on the RGB, and the torque of this wind can account for observations of slowly rotating RHB stars in the field. About 0.1-0.2 M_sun will be lost on the RHB itself. This first empirical determination of mass loss on the RHB may contribute to the appearance of extended horizontal branches in globular clusters. The spectra appear to resolve the problem of missing intracluster material in globular clusters. Opportunities exist for 'wind smothering' of dwarf stars by winds from the evolved population, possibly leading to surface pollution in regions of high stellar density.
description: 53 pages; 15 figures; accepted for publication in The Astronomical Journal
Dying for a better day : mortality and mourning in the fiction of Virginia Woolf
Creators: name: Varoǧlu, Talia Marie
Publisher: name: University of British Columbia
Year: 2024

description: The modern settler-colonial western world has a problem with dying. This thesis considers the impact of problematising dying by proposing two models of contemporary dying that stem from a largely death-phobic culture: euphemised dying and genred dying. I extend approaches common in medical humanities to make these models of dying legible through theoretical interventions applied to the fiction of Virginia Woolf, herself a source of much work on dying and death. Euphemised dying is a rhetorical operation that camouflages deliberate acts or systems of violence by naming killings as deaths. Sarah Lochlann Jain’s living in prognosis, Jasbir K. Puar’s debility, Achille Mbembe’s necropolitics, and Michel Foucault’s biopolitics inform the construction of this violation of dying, explored through Woolf’s 'Jacob's Room' and 'Mrs Dalloway'. Genred dying is the transformation of dying into a kind of genre with conventions that can be readily controlled or managed by the dying person and/or surrounding caregivers. I call on contemporary genre studies by Fredric Jameson and Raymond Williams to examine genred dying in tandem with Woolf’s 'The Years'. Calling heavily on Stephen Jenkinson’s lifetime of work in counselling dying people and their families, this thesis argues for a reappraisal of dying as a faithful and living subjectivity or deity that deserves a place in the world, and concludes by suggesting through an analysis of 'The Waves' that we could begin to learn dying through radical practices of mourning our forgotten ancestors.
A multiwavelength study of the star forming region IRAS 18544+0112
Creators: name: Ortega, M. E.
name: Paron, S.
name: Cichowolski, S.
name: Rubio, M.
name: Castelletti, G.
name: Dubner, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This work aims at investigating the molecular and infrared components in the massive young stellar object (MYSO) candidate IRAS 18544+0112. The purpose is to determine the nature and the origin of this infrared source. To analyze the molecular gas towards IRAS 18544+0112, we have carried out observations in a 90" x 90" region around l = 34.69, b = -0.65, using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J=3-2, 13CO J=3-2, HCO+ J=4-3 and CS J=7-6 lines with an angular resolution of 22". The infrared emission in the area has been analyzed using 2MASS and Spitzer public data. From the molecular analysis, we find self-absorbed 12CO J=3-2 profiles, which are typical in star forming regions, but we do not find any evidence of outflow activity. Moreover, we do not detect either HCO+ J=4-3 or CS J=7-6 in the region, which are species normally enhanced in molecular outflows and high density envelopes. The 12CO J=3-2 emission profile suggests the presence of expanding gas in the region. The Spitzer images reveal that the infrared source has a conspicuous extended emission bright at 8 um with an evident shell-like morphology of ~ 1.5 arcmin in size (~ 1.4 pc at the proposed distance of 3 kpc) that encircles the 24 um emission. The non-detection of ionized gas related to IRAS 18544+0112, together with the fact that it is still embedded in a molecular clump suggest that IRAS 18544+0112, has not reached the UCHII region stage yet. Based on near infrared photometry we search for YSO candidates in the region and propos that 2MASS 18565878+0116233 is the infrared point source associated with IRAS 18544+0112. Finally, we suggest that the expansion of a larger nearby HII region, G034.8-0.7, might be related to the formation of IRAS 18544+0112.
description: 14 pages, accepted for publication in A&A. Figures degraded to reduce file size
Three body recombination of ultracold dipoles to weakly bound dimers
Creators: name: Ticknor, Chris
name: Rittenhouse, Seth T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We use universality in two-body dipolar physics to study three-body recombination. We present results for the universal structure of weakly bound two-dipole states that depend only on the s-wave scattering length ($a$). We study threshold three-body recombination rates into weakly-bound dimer states as a function of the scattering length. A Fermi Golden rule analysis is used to estimate rates for different events mediated by the dipole-dipole interaction and a phenomenological contact interaction. The three-body recombination rate in the limit where $a\gg D$ contains terms which scale as $a^{4}$, $a^{2}D^{2}$ and $D^{4}$, where $D$ is the dipolar length. When $a \ll D$, the three-boby recombination rate scales as $D^4$.
description: 4 pages, 2 figures
Hadronic interactions and nuclear physics
Creators: name: Beane, Silas R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: I give an overview of efforts in the last year to calculate interactions among hadrons using lattice QCD. Results discussed include the extraction of low-energy phase shifts and three-body interactions, and the study of pion and kaon condensation. A critical appraisal is offered of recent attempts to calculate nucleon-nucleon and nucleon-hyperon potentials on the lattice.
description: 15 pages, 16 figures, Talk given at 26th International Symposium on Lattice Field Theory (Lattice 2008), Williamsburg, Virginia, USA, July 14-20, 2008
Angular Momentum in Non-Relativistic QED and Photon Contribution to Spin of Hydrogen Atom
Creators: name: Chen, Panying
name: Ji, Xiangdong
name: Xu, Yang
name: Zhang, Yue
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study angular momentum in non-relativistic quantum electrodynamics (NRQED). We construct the effective total angular momentum operator by applying Noether's theorem to the NRQED lagrangian. We calculate the NRQED matching for the individual components of the QED angular momentum up to one loop. We illustrate an application of our results by the first calculation of the angular momentum of the ground state hydrogen atom carried in radiative photons, $α_{\rm em}^3/18π$, which might be measurable in future atomic experiments.
description: 7 pages, 3 figures
The map equation
Creators: name: Rosvall, M.
name: Axelsson, D.
name: Bergstrom, C. T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Many real-world networks are so large that we must simplify their structure before we can extract useful information about the systems they represent. As the tools for doing these simplifications proliferate within the network literature, researchers would benefit from some guidelines about which of the so-called community detection algorithms are most appropriate for the structures they are studying and the questions they are asking. Here we show that different methods highlight different aspects of a network's structure and that the the sort of information that we seek to extract about the system must guide us in our decision. For example, many community detection algorithms, including the popular modularity maximization approach, infer module assignments from an underlying model of the network formation process. However, we are not always as interested in how a system's network structure was formed, as we are in how a network's extant structure influences the system's behavior. To see how structure influences current behavior, we will recognize that links in a network induce movement across the network and result in system-wide interdependence. In doing so, we explicitly acknowledge that most networks carry flow. To highlight and simplify the network structure with respect to this flow, we use the map equation. We present an intuitive derivation of this flow-based and information-theoretic method and provide an interactive on-line application that anyone can use to explore the mechanics of the map equation. We also describe an algorithm and provide source code to efficiently decompose large weighted and directed networks based on the map equation.
description: 9 pages and 3 figures, corrected typos. For associated Flash application, see http://www.tp.umu.se/~rosvall/livemod/mapequation/
Mapping Carbon Footprint of Rush-hour Traffic for Supporting Greenhouse Gas Emission Reduction Plan within University of Phayao
Creators: name: Wipop Paengwangthong
Publisher: name: School of Information and Communication Technology, University of Phayao
Year: 2022
Subjects: Traffic Count Data
Vehicle Emission
Spatial Database

description: The Journal of Spatial Innovation Development, 3, 1, 41-52
Pure Gauge Configurations and Solutions to Fermionic Superstring Field Theories Equations of Motion
Creators: name: Aref'eva, I. Ya.
name: Gorbachev, R. V.
name: Medvedev, P. B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent results on solutions to the equation of motion of the cubic fermionic string field theory and an equivalence of non-polynomial and cubic string field theories are discussed. To have a possibility to deal with both GSO(+) and GSO(-) sectors in the uniform way a matrix formulation for the NS fermionic SFT is used. In constructions of analytical solutions to open string field theories truncated pure gauge configurations parameterized by wedge states play an essential role. The matrix form of this parametrization for the NS fermionic SFT is presented. Using the cubic open superstring field theory as an example we demonstrate explicitly that for the large parameter of the perturbation expansion these truncated pure gauge configurations give divergent contributions to the equation of motion on the subspace of the wedge states. The perturbation expansion is cured by adding extra terms that are nothing but the terms necessary for the equation of motion contracted with the solution itself to be satisfied.
description: 15 pages, Latex, Expanded version of a lecture given at the Conference on Liouville Quantum Gravity and Statistical Systems, in honor of Alexei Zamolodchikov, Poncelet Institute, Moscow, June, 2008; refs.corrected
Killing Tensors and Symmetries
Creators: name: Garfinkle, David
name: Glass, E. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A new method is presented for finding Killing tensors in spacetimes with symmetries. The method is used to find all the Killing tensors of Melvin's magnetic universe and the Schwarzschild vacuum. We show that they are all trivial. The method requires less computation than solving the full Killing tensor equations directly, and it can be used even when the spacetime is not algebraically special.
description: to appear in Class. Quantum Grav (new citation added)
Development of Online Internship Management Information Systems: A Case Study in School of Information and Communication Technology, University of Phayao
Creators: name: Rattanawadee Panthong
Publisher: name: School of Information and Communication Technology, University of Phayao
Year: 2022
Subjects: Internship
Management Information System
Google Apps
University of Phayao

description: The Journal of Spatial Innovation Development, 3, 1, 53-66
Lydian and Hypolydian notes (dDAGM) and their significance for the Imperial harmonic system
Creators: name: Lynch, Tosca A.C.
Publisher: name: Zenodo
Year: 2023

description: This file provides a brief discussion of the significance of the Lydian and HypoLydian notes attested in Imperial Greek documents, and shows how these selected data support the broader reconstruction offered in Lynch 2024a.
A Brief History of Context
Creators: name: Wan, Kaiyu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Context is a rich concept and is an elusive concept to define. The concept of context has been studied by philosophers, linguists, psychologists, and recently by computer scientists. Within each research community the term context was interpreted in a certain way that is well-suited for their goals, however no attempt was made to define context. In many areas of research in computer science, notably on web-based services, human-computer interaction (HCI), ubiquitous computing applications, and context-aware systems there is a need to provide a formal operational definition of context. In this brief survey an account of the early work on context, as well as the recent work on many working definitions of context, context modeling, and a formalization of context are given. An attempt is made to unify the different context models within the formalization. A brief commentary on the usefulness of the formalization in the development of context-aware and dependable systems is included.
description: International Journal of Computer Science Issues, IJCSI Volume 6, Issue 2, pp33-43, November 2009
The Drazin inverse of the linear combinations of two idempotents in the Banach algebras
Creators: name: Shifang, Zhang
name: Junde, Wu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: In this paper, some Drazin inverse representations of the linear combinations of two idempotents in Banach algebra are obtained.
Trap and population imbalanced two-component Fermi gas in the BEC limit
Creators: name: Silotri, S. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study equal mass population imbalanced two-component atomic Fermi gas with unequal trap frequencies $(ω_{\uparrow} \neq ω_{\downarrow})$ at zero temperature using the local density approximation (LDA). We consider the strongly attracting Bose-Einstein condensation (BEC) limit where polarized (gapless) superfluid is stable. The system exhibits shell structure: unpolarized SF$\to$polarized SF$\to$normal N. Compared to trap symmetric case, when the majority component is tightly confined the gapless superfluid shell grows in size leading to reduced threshold polarization to form polarized (gapless) superfluid core. In contrast, when the minority component is tightly confined, we find that the superfluid phase is dominated by unpolarized superfluid phase with gapless phase forming a narrow shell. The shell radii for various phases as a function of polarization at different values of trap asymmetry are presented and the features are explained using the phase diagram.
description: 5 pages, 5 figures
The Globular Cluster Mass Function as a Remnant of Violent Birth
Creators: name: Elmegreen, Bruce G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The log-normal shape of the mass function for metal-poor halo globular clusters is proposed to result from an initial M^{-2} power law modified rapidly by evaporation, collisions with clouds, and mutual cluster interactions in the dense environment of a redshift z~5-15 disk galaxy. Galaxy interactions subsequently spray these clusters into the galaxy group environment, where they fall into other growing galaxies and populate their halos. Clusters forming later in z~2-5 galaxies, and those formed during major mergers, produce metal-rich globulars. Monte Carlo models of evolving cluster populations demonstrate the early formation of a log-normal mass function for typical conditions in high-redshift galaxies.
description: 10 pages, 4 figures, accepted for ApJL on 3/1/2010, version 2 after proof corrections
Search for pair production of heavy particles decaying to a top quark and a gluon in the lepton+jets final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search is presented for the pair production of new heavy resonances, each decaying into a top quark (t) or antiquark and a gluon (g). The analysis uses data recorded with the CMS detector from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to an integrated luminosity of 138 fb$^{-1}$. Events with one muon or electron, multiple jets, and missing transverse momentum are selected. After using a deep neural network to enrich the data sample with signal-like events, distributions in the scalar sum of the transverse momenta of all reconstructed objects are analyzed in the search for a signal. No significant deviations from the standard model prediction are found. Upper limits at 95% confidence level are set on the product of cross section and branching fraction squared for the pair production of excited top quarks in the $\mathrm{t^*}$ $\to$ tg decay channel. The upper limits range from 120 to 0.8 fb for a $\mathrm{t^*}$ with spin-1/2 and from 15 to 1.0 fb for a $\mathrm{t^*}$ with spin-3/2. These correspond to mass exclusion limits up to 1050 and 1700 GeV for spin-1/2 and spin-3/2 $\mathrm{t^*}$ particles, respectively. These are the most stringent limits to date on the existence of $\mathrm{t^*}$ $\to$ tg resonances.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/B2G-22-005 (CMS Public Pages)
Kondo effect and conductance of nanocontacts with magnetic impurities
Creators: name: Jacob, D.
name: Haule, K.
name: Kotliar, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the impact of dynamical correlations on the electronic structure and coherent transport properties of Cu nanocontacts hosting a single magnetic impurity (Ni,Co,Fe) in the contact region. The strong dynamical correlations of the impurity 3d-electrons are fully taken into account by combining density functional calculations with a dynamical treatment of the impurity 3d-shell in the one-crossing approximation. We find that dynamical correlations give rise to the Kondo effect and lead to Fano features in the coherent transport characteristics similar to those observed in related experiments.
description: accepted for publication in Phys. Rev. Lett.; replaced with accepted version of manuscript; 5 pages, 3 figures
Exploring the effects of kangaroo care on mothers of preterm newborns
Creators: name: Castro Babbini, Maria José
Publisher: name: University of British Columbia
Year: 2024

description: Background: Mothers of infants born prematurely (<37 weeks gestational age [GA]) hospitalized in the Neonatal Intensive Care Unit (NICU) are at increased risk of suffering from anxiety, which can adversely affect their infant’s development. Kangaroo care (KC), involving direct skin-to-skin contact of an infant on a caregiver’s chest, fosters attachment, can regulate maternal anxiety, and increases oxytocin (OT) levels. There is strong evidence of the benefits of KC on the mother-infant dyad in the preterm population. However, little is known about the interactive effects between KC, OT levels and anxiety of mothers of preterm infants in the NICU. Methodology: This pilot study recruited participants within the first week of their preterm infants' birth. Maternal KC time was self-recorded daily for 14 days. Self-reported anxiety levels on the State-Trait Anxiety Inventory questionnaire- short version (STAI-5) and saliva samples for OT measurement were collected at baseline, days 7 and 14. Demographic, clinical and contextual data were also gathered. Descriptive data for KC time, STAI-5 scores, and oxytocin levels were examined at group and individual levels. Results: A total of 7 participants were included in the study, with 4 mothers having complete data. A clear pattern of change in STAI-5 scores and OT in mothers over the two weeks of practicing KC was not observed. Participant inter and intra variability was found. The average minutes spent doing KC decreased between day 7 (average KC: 156) and day 14 (average KC: 112.5). STAI-5 scores decreased from the baseline (STAIS-5 average score: 7.9) until TP2 (STAIS-5 average score: 6.8); OT levels increased from baseline to day 7 (OT levels: 13.8) and decreased at day 14 (OT levels: 9.7). Conclusions: This pilot study provided notable insights, such as the willingness of this population to participate in studies, showing feasibility for future research, and the importance of including this population’s contextual factors. Participant inter and intra variability in time spent doing KC and oxytocin levels was also observed, must be accounted for in a larger study. Additional research is needed to investigate the impact of simple human-based interventions on outcomes in preterm infants and, importantly, on their mothers.
The association between neuraxial anesthesia and the development of childhood asthma – a secondary analysis of the newborn epigenetics study cohort
Creators: name: Huang, Yueyang
name: Tzeng, Jung-Ying
name: Maguire, Rachel
name: Hoyo, Cathrine
name: Allen, Terrence
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Childhood asthma is a common chronic illness that has been associated with mode of delivery. However, the effect of cesarean delivery alone does not fully account for the increased prevalence of childhood asthma. We tested the hypothesis that neuraxial anesthesia used for labor analgesia and cesarean delivery alters the risk of developing childhood asthma. Within the Newborn Epigenetics Study birth cohort, 196 mother and child pairs with entries in the electronic anesthesia records were included. From these records, data on maternal anesthesia type, duration of exposure, and drugs administered peripartum were abstracted and combined with questionnaire-derived prenatal risk factors and medical records and questionnaire-derived asthma diagnosis data in children. Logistic regression models were used to evaluate associations between type of anesthesia, duration of anesthesia, and the development of asthma in males and females. We found that longer duration of epidural anesthesia was associated with a lower risk of asthma in male children (OR = 0.80; 95% CI = 0.66–0.95) for each hour of epidural exposure. Additionally, a unit increase in the composite dose of local anesthetics and opioid analgesics administered via the spinal route was associated with a lower risk of asthma in both male (OR = 0.59, 95% CI = 0.36–0.96) and female children (OR 0.26, 95% CI 0.09–0.82). Our data suggest that peripartum exposure to neuraxial anesthesia may reduce the risk of childhood asthma primarily in males. Larger human studies and model systems with longer follow-up are required to elucidate these findings.
Development of Near Real-Time analysis of Heatstroke Risk Information Service that affects to the elderly person based on Web Map Service
Creators: name: Sittichai Choosumrong
Publisher: name: School of Information and Communication Technology, University of Phayao
Year: 2022
Subjects: Web Processing Service
Open Data kit
Heat Index
Zoo-Project Platform
Foss4G

description: The Journal of Spatial Innovation Development, 3, 1, 88-94
ICT in Universities of the Western Himalayan Region in India: Status, Performance- An Assessment
Creators: name: Sharma, D.
name: Singh, V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The present paper describes a live project study carried out for the universities located in the western Himalayan region of India in the year 2009. The objective of this study is to undertake the task of assessment regarding initiative, utilization of ICT resources, its performance and impact in these higher educational institutions/universities. In order to answer these, initially basic four- tier framework was prepared. Followed by a questionnaire containing different ICT components 18 different groups like vision, planning, implementation, ICT infrastructure and related activities exhibiting performance. Primary data in the form of feedback on the five point scale, of the questionnaire, was gathered from six universities of the region. A simple statistical analysis was undertaken using weighted mean, to assess the ICT initiative, status and performance of various universities. In the process, a question related to Performance Indicator was identified from each group, whose Coefficient of Correlation was calculated. This study suggests that a progressive vision, planning and initiative regarding academic syllabi, ICT infrastructure, used in training the skilled human resource, is going to have a favourable impact through actual placement, research and play a dominant role at the National and International level.
description: International Journal of Computer Science Issues, IJCSI Volume 6, Issue 2, pp44-52, November 2009
Exploring the Embeddedness of Young Black Professionals in Agriculture, Food, and Natural Resources Careers
Creators: name: McBride, Stephen Mark
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 300299
subject: Agriculture, land and farm management not elsewhere classified
classificationCode: 309999
subject: Other agricultural, veterinary and food sciences not elsewhere classified
classificationCode: 380109
subject: Industry economics and industrial organisation
classificationCode: 350507
subject: Workplace wellbeing and quality of working life
classificationCode: 350502
subject: Employment equity and diversity
classificationCode: 350504
subject: Industrial and employee relations
classificationCode: 520104
subject: Industrial and organisational psychology (incl. human factors)

description: In recent years, the agricultural industry has been working to improve the retention of their newly hired Black employees. In the aftermath of the COVID-19 pandemic, millennial employees across the United States have been voluntarily leaving their jobs in favor of hybrid or remote work, better benefits, or an improved work environment. Today, the median tenure of millennials is only 2.8 years on the job, and research has shown that Black employees are 30% more likely to leave their positions. The agriculture, food, and natural resources (AFNR) sector is more heavily represented in rural America, where the Black population makes up just 7.8% and the White population comprises 78.2%. Therefore, the purpose of this phenomenological study was to explore the workplace and community embeddedness experiences of young Black professionals early in their AFNR careers. Specifically, the lived experiences of young Black professionals in their positions for five years or less were investigated through interviews with participants to examine the contributors of their embeddedness. Job Embeddedness Theory informed the study and seven young Black AFNR professionals participated in virtual Zoom interviews lasting an average of 75 minutes. Initial, structural, and pattern coding techniques were used to analyze the data, and three major conclusions emerged. First, many young Black professionals have chosen a career in the AFNR sector because they desire to engage with meaningful work related to the agricultural industry. Second, my participants had to overcome many obstacles related to their age or race that impacted their abilities to become more embedded in their workplaces or communities. Finally, an extensive network of linkages to other Black professionals at work or in the community provides young Black professionals with more substantial support and visibility. Implications for theory and practice were provided, along with recommendations for future research.
K$_2$Cr$_8$O$_{16}$ predicted as a half-metallic ferromagnet: Scenario for a metal-insulator transition
Creators: name: Sakamaki, M.
name: Konishi, T.
name: Ohta, Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based on the first-principles electronic structure calculations, we predict that a chromium oxide K$_2$Cr$_8$O$_{16}$ of hollandite type should be a half-metallic ferromagnet where the Fermi level crosses only the majority-spin band, whereas the minority-spin band has a semiconducting gap. We show that the double-exchange mechanism is responsible for the observed saturated ferromagnetism. We discuss possible scenarios of the metal-insulator transition observed at low temperature and we argue that the formation of the incommensurate, long-wavelength density wave of spinless fermions caused by the Fermi-surface nesting may be the origin of the opening of the charge gap.
description: 7 pages, 7 figures; minor modifications; Phys. Rev. B, in press