cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multi-terminal magneto-transport in an interacting fractal network: a mean field study
Creators: name: Maiti, Santanu K.
name: Chakrabarti, Arunava
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magneto-transport of interacting electrons in a Sierpinski gasket fractal is studied within a mean field approach. We work out the three-terminal transport and study the interplay of the magnetic flux threading the planar gasket and the dephasing effect introduced by the third lead. For completeness we also provide results of the two-terminal transport in presence of electron-electron interaction. It is observed that dephasing definitely reduces the transport, while the magnetic field generates a continuum in the transmission spectrum signaling a band of extended eigenstates in this non-translationally invariant fractal structure. The Hubbard interaction and the dephasing introduced by the third lead play their parts in reducing the average transmission, and opens up gaps in the spectrum, but can not destroy the continuum in the spectrum.
description: 7 pages, 6 figures
Achieving the physical limits of the bounded-storage model
Creators: name: Mandayam, Prabha
name: Wehner, Stephanie
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Secure two-party cryptography is possible if the adversary's quantum storage device suffers imperfections. For example, security can be achieved if the adversary can store strictly less then half of the qubits transmitted during the protocol. This special case is known as the bounded-storage model, and it has long been an open question whether security can still be achieved if the adversary's storage were any larger. Here, we answer this question positively and demonstrate a two-party protocol which is secure as long as the adversary cannot store even a small fraction of the transmitted pulses. We also show that security can be extended to a larger class of noisy quantum memories.
description: 10 pages (revtex), 2 figures, v2: published version, minor changes
Kerr Naked Singularities as Particle Accelerators
Creators: name: Patil, Mandar
name: Joshi, Pankaj S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate here the particle acceleration by Kerr naked singularities. We consider a collision between particles dropped in from infinity at rest, which follow geodesic motion in the equatorial plane, with their angular momenta in an appropriate finite range of values. When an event horizon is absent, an initially infalling particle turns back as an outgoing particle, when it has the angular momentum in an appropriate range of values, which then collides with infalling particles. When the collision takes place close to what would have been the event horizon in the extremal case, the center of mass energy of collision is arbitrarily large, depending on how close is the overspinning Kerr geometry to the extremal case. Thus the fast rotating Kerr configurations if they exist in nature could provide an excellent cosmic laboratory to probe ultra-high-energy physics.
description: 13 pages, 3 figures, Published in Class. Quant. Grav., Significant changes made in the manuscript
Can the Renormalization Group Improved Effective Potential be used to estimate the Higgs Mass in the Conformal Limit of the Standard Model?
Creators: name: Chishtie, F. A.
name: Hanif, T.
name: Jia, J.
name: Mann, R. B.
name: McKeon, D. G. C.
name: Sherry, T. N.
name: Steele, T. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81T17

description: We consider the effective potential $V$ in the standard model with a single Higgs doublet in the limit that the only mass scale $μ$ present is radiatively generated. Using a technique that has been shown to determine $V$ completely in terms of the renormalization group (RG) functions when using the Coleman-Weinberg (CW) renormalization scheme, we first sum leading-log (LL) contributions to $V$ using the one loop RG functions, associated with five couplings (the top quark Yukawa coupling $x$, the quartic coupling of the Higgs field $y$, the SU(3) gauge coupling $z$, and the $SU(2) \times U(1)$ couplings $r$ and $s$). We then employ the two loop RG functions with the three couplings $x$, $y$, $z$ to sum the next-to-leading-log (NLL) contributions to $V$ and then the three to five loop RG functions with one coupling $y$ to sum all the $N^2LL...N^4LL$ contributions to $V$. In order to compute these sums, it is necessary to convert those RG functions that have been originally computed explicitly in the minimal subtraction (MS) scheme to their form in the CW scheme. The Higgs mass can then be determined from the effective potential: the $LL$ result is $m_{H}=219\;GeV/c^2$ decreases to $m_{H}=188\;GeV/c^2$ at $N^{2}LL$ order and $m_{H}=163\;GeV/c^2$ at $N^{4}LL$ order. No reasonable estimate of $m_H$ can be made at orders $V_{NLL}$ or $V_{N^3LL}$. This is taken to be an indication that this mechanism for spontaneous symmetry breaking is in fact viable, though one in which there is slow convergence towards the actual value of $m_H$. The mass $163\;GeV/c^2$ is argued to be an upper bound on $m_H$.
description: 24 pages, 5 figures. Updated version contains new discussion, references, figures, and corrects errors in references
Evaluating Free To Be : a positive body image program for adolescents
Creators: name: Regehr, Renae Yoko
Publisher: name: University of British Columbia
Year: 2017

description: The majority of research, theory, and practice around body image tends to focus on understanding and preventing negative body image in girls and women. Accordingly, body image programs have been developed for adolescents that aim to decrease negative predictive factors for negative body image. However, such interventions have inconsistently reduced body dissatisfaction, a core predictive factor for developing eating disorders. An exclusive focus on reducing pathology neglects those who experience neutral or healthy body image. Alternatively, programs developed from a positive psychology lens aim to promote and increase positive body image characteristics that nurture and maintain healthy functioning, irrespective of the participant’s initial level of body image. Thus, the objective of the present study was to develop and evaluate a new positive body image program, Free To Be, for promoting positive predictive factors for positive body image in adolescent boys and girls. Grade seven participants (N= 76) from a public middle school participated in a six-session, 55-minute body image program. Participants completed assessments related to factors associated with body image before and after the program. Results revealed at post-test, positive body image, body image coping strategies, and media literacy increased significantly for both boys and girls. Body dissatisfaction decreased significantly for both boys and girls. Implications for teachers, clinicians, and researchers are discussed.
Exploring Three-Nucleon Forces in Lattice QCD
Creators: name: Doi, Takumi
name: Aoki, Sinya
name: Hatsuda, Tetsuo
name: Ikeda, Yoichi
name: Inoue, Takashi
name: Ishii, Noriyoshi
name: Murano, Keiko
name: Nemura, Hidekatsu
name: Sasaki, Kenji
name: Collaboration, for HAL QCD
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Three-nucleon forces (3NF) are investigated from two-flavor lattice QCD simulations. We utilize the Nambu-Bethe-Salpeter (NBS) wave function to determine two-nucleon forces (2NF) and 3NF in the same framework. As a first exploratory study, we extract 3NF in which three nucleons are aligned linearly with an equal spacing. This is the simplest geometrical configuration which reduces the huge computational cost of calculating the NBS wave function. Quantum numbers of the three-nucleon system are chosen to be (I, J^P)=(1/2,1/2^+) (the triton channel). Lattice QCD simulations are performed using N_f=2 dynamical clover fermion configurations at the lattice spacing of a = 0.156 fm on a 16^3 x 32 lattice with a large quark mass corresponding to m_π= 1.13 GeV. We find repulsive 3NF at short distance in the triton channel. Several sources of systematic errors are also discussed.
description: 20 pages, 7 figures. Accepted for publication in Prog. Theor. Phys
Lines on projective varieties and applications
Creators: name: Russo, Francesco
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: The first part of this note contains a review of basic properties of the variety of lines contained in an embedded projective variety and passing through a general point. In particular we provide a detailed proof that for varieties defined by quadratic equations the base locus of the projective second fundamental form at a general point coincides, as a scheme, with the variety of lines. The second part concerns the problem of extending embedded projective manifolds, using the geometry of the variety of lines. Some applications to the case of homogeneous manifolds are included.
description: 15 pages. One example removed; one remark and some references added; typos corrected
High Energy Particle Collisions in Superspinning Kerr Geometry
Creators: name: Patil, Mandar
name: Joshi, Pankaj S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate here the particle acceleration and high energy collision in the Kerr geometry containing a naked singularity. We show that the center of mass energy of collision between two particles, dropped in from a finite but arbitrarily large distance along the axis of symmetry is arbitrarily large, provided the deviation of the angular momentum parameter from the mass is very small for the Kerr naked singularity. The collisions considered here are between particles, one of them ingoing and the other one being initially ingoing but which later emerges as an outgoing particle, after it suffers a reflection from a spatial region which has a repulsive gravity in the vicinity of the naked singularity. High energy collisions take place around a region which marks a transition between the attractive and repulsive regimes of gravity. We make a critical comparison between our results and the BSW acceleration mechanism [M. Banados, J. Silk, and S. M. West, Phys. Rev. Lett. 103, 111102 (2009).] for extremal Kerr blackholes, and argue that the scenario we give here has certain distinct advantages. If compact objects exist in nature with exterior Kerr superspinning geometry then such high energy collisions would have a significant impact on the physical processes occurring in its surrounding and could possibly lead to their own observational signatures. As an aside we also suggest a curious Gedanken collider physics experiment which could in principle be constructed in this geometry.
description: 7 pages, 2 figures. Matches the version published in Phys. Rev. D. Significant changes in the manuscript. Title changed
Additional file 1 of Patient and public involvement in implementation of evidence-based guidance for musculoskeletal conditions: a scoping review of current advances and gaps
Creators: name: Babatunde, Opeyemi O.
name: Dawson, Shoba
name: Brammar, June
name: Parton, Linda
name: Dziedzic, Krysia
name: Adebajo, Adewale O.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1: Plain English Summary.
Resisting rationality : the transformative capacity of anxiety and its implications for political theory
Creators: name: Stewart, Katriona Vera
Publisher: name: University of British Columbia
Year: 2017

description: Large-scale national epidemiological surveys consistently find that women are more likely to be diagnosed with emotional disorders, specifically anxiety and depression, than men. Although the cause(s) for this phenomenon are difficult to determine, research increasingly shows that environmental factors play a greater role than genetics/biology in producing this anomaly (D. Freeman and J. Freeman 2013). Current psychological models of mental illness, however, tend to negate social and political aspects of experience by depicting anxiety as a naturally occurring pathology within women (Ussher 2010). This thesis seeks to critically interrogate and re-create constructions of mental illness by examining how our conceptions of female anxiety have been shaped by negative images in psychiatric discourse and liberal political theory. I analyze hysteria as a precursor to anxiety to show how the age-old association between femininity and madness continues to influence prevailing attitudes around gender. To challenge these negative depictions, I reconceptualize anxiety as a natural response to power, in particular, patriarchal relationships. Further, I contend that while anxiety can be debilitating, it is also the source of a significant contribution to diverse and oftentimes empathetic voices. Thus while psychological therapy may be a useful tool for some people who experience mental illness, it should not be the overarching paradigm through which we view anxiety, nor should it define the identities of anxious individuals. Bringing anxiety into communication with contemporary social theories of disability, I conclude that liberal theory is an inadequate political ideology in that it is unconsciously gendered and thus excludes women (and men) who experience emotional illness from its theoretical criteria for citizenship. Consequently, it is necessary to reject wholly negative images of anxiety at the crux of liberal theory. Instead, expanding on the work of care ethicists, I advocate viewing anxiety as a different, relational voice rooted in an ethic of interdependence.
Demonstrating Additional Law of Relativistic Velocities based on Squeezed Light
Creators: name: Yang, Da-Bao
name: Li, Yan
name: Zhang, Fu-Lin
name: Chen, Jing-Ling
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Special relativity is foundation of many branches of modern physics, of which theoretical results are far beyond our daily experience and hard to realized in kinematic experiments. However, its outcomes could be demonstrated by making use of convenient substitute, i.e. squeezed light in present paper. Squeezed light is very important in the field of quantum optics and the corresponding transformation can be regarded as the coherent state of SU(1; 1). In this paper, the connection between the squeezed operator and Lorentz boost is built under certain conditions. Furthermore, the additional law of relativistic velocities and the angle of Wigner rotation are deduced as well.
Enhancing Healthcare Communication and Service Delivery: The Role of Mental Practice and Neurolinguistic Programming in Remote Indigenous Communities of Indonesia
Creators: name: MUSTAMU, ALVA CHERRY
name: samaran, elisabeth
name: Aji Suryo Putro, Waskito
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 520107
subject: Sport and exercise psychology
classificationCode: 390110
subject: Medicine, nursing and health curriculum and pedagogy
classificationCode: 420504
subject: Mental health nursing
classificationCode: 420319
subject: Primary health care

description: This study investigates the impact of a combined mental practice and neurolinguistic programming (NLP) intervention on enhancing the capacity of pediatric and maternity nurses in remote regions of Southwest Papua, Indonesia. Improving healthcare quality in underserved areas is crucial, particularly for indigenous communities facing limited access to resources. The research employed a quasi-experimental design with 70 indigenous Papuan nurses, implementing a one-month intervention comprising techniques such as goal-setting, visualization, emotional anchoring, reframing, and positive self-talk. Pre- and post-intervention assessments evaluated nurses' adaptability, health promotion efforts, service delivery flexibility, technology use, and collaboration with the community. Statistical analysis using t-tests revealed significant improvements across all measured domains (p < 0.05), with adaptation scores increasing from 3.2 to 4.5, health promotion from 3.0 to 4.4, service delivery from 3.1 to 4.6, technology use from 2.9 to 4.3, and community collaboration from 3.3 to 4.7. These findings demonstrate that the integration of mental practice and NLP effectively enhances healthcare professionals' competencies in resource-limited settings. The results suggest that such an approach can be a promising strategy for optimizing healthcare delivery in remote areas, particularly where cultural adaptability and community engagement are essential. Future research should consider evaluating the intervention's scalability and its potential benefits in different healthcare contexts to further substantiate its effectiveness and applicability.
Extinction, coextinction and colonization dynamics in plant-hummingbird networks under climate change
Creators: name: Sonne, Jesper
name: Maruyama, Pietro Kiyoshi
name: González, Ana M. Martín
name: Rahbek, Carsten
name: Bascompte, Jordi
name: Dalsgaard., Bo
Publisher: name: figshare
Year: 2022
Subjects: subject: 60202 Community Ecology (excl. Invasive Species Ecology)
subject: FOS: Biological sciences
subject: Ecology
subject: 60302 Biogeography and Phylogeography

description: Supplementary data and R code for the paper: "Extinction, coextinction and colonization dynamics in plant-hummingbird networks under climate change"
REVISTA ESPECIALIDADES HAGP - VOLUMEN 2 - DICIEMBRE 2023
Creators: name: REVISTA ESPECIALIDADES HAGP
Publisher: name: Zenodo
Year: 2023

description: Editorial
El área de Nefrología del Hospital de Especialidades Guayaquil Dr. Abel Gilbert Pontón, es un servicio loable que proporciona atención oportuna y de calidad hacia los pacientes con enfermedades renales, que ha demostrado tener capacidad resolutiva desde el enfoque asistencial y biotecnológico.
 
La incidencia y prevalencia incrementada de pacientes en los programas de diálisis obliga de manera natural a contar con áreas adecuadas, por ello en nuestra unidad hospitalaria en el área de Terapia de Reemplazo Renal agudo/crónico se ofrecen los siguientes servicios:

Hemodiálisis, Hemodiafiltración, Hemofiltración.
Diálisis Peritoneal manual y automatizada.
Terapia Lenta Continua y Plasmaféresis.
Nuestra área cuenta con un equipo multidisciplinario de salud, calificado y capacitado, constituyéndose en una fortaleza para el hospital, mejorando la calidad de atención a los usuarios, realizando un promedio de 900 terapias mensuales, que han beneficiado un aproximado de 150 pacientes. Con una cobertura amplia, dirigida a pacientes con y sin enfermedades infectocontagiosas, disminuyendo las derivaciones a prestadores externos y aprovechando los recursos existentes como infraestructura y equipo médico.
 
A través de la terapia de sustitución renal, nuestro equipo procura mejorar la calidad de vida de los pacientes y, en algunos, la posibilidad de desempeñar una activad laboral y obtener los recursos necesarios para vivir con dignidad y autonomía. Por ello, la importancia de la adherencia de los pacientes a una adecuada terapia dialítica impacta de forma positiva en la sobrevida de nuestros pacientes.
 
Finalmente estamos comprometidos con la mejora continua   en   la atención integral del paciente, permitiéndonos mantener un alto porcentaje de adherencia al tratamiento de terapia de reemplazo renal, lo que nos convierte en un centro de referencia a nivel de la red de salud pública.
 
 
Dr. Roberto Gutiérrez Gómez, Esp.
Lic. Gabriela Genovesi Anguizaca, Mgs.
Área de Nefrología
Hospital de Especialidades Guayaquil
"Dr. Abel Gilbert Pontón"
Gravitational collapse with non-vanishing tangential pressure
Creators: name: Malafarina, Daniele
name: Joshi, Pankaj S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using the general formalism for spherical gravitational collapse developed in [1], we investigate here the final fate of a spherical distribution of a matter cloud, where radial pressures vanish but tangential pressures are non-zero. Within this framework, firstly we examine the effect of introducing a generic small pressure in a well-known black hole formation process, which is that of an otherwise pressure-free dust cloud. The intriguing result we find is that a dust collapse that was going to a black hole final state could now go to a naked singularity final configuration, when arbitrarily small tangential pressures are introduced. The implications of such a scenario are discussed in some detail. Secondly, the approach here allows us to generalize the earlier results obtained on gravitational collapse with non-zero tangential pressure, in the presence of a non-zero cosmological constant. Finally, we discuss the genericity of black hole and naked singularity formation in collapse with non-zero tangential pressure. The treatment here gives a unified and complete picture on collapse final states, in terms of black hole and naked singularity formation, generalizing the earlier results obtained for this class of collapse models. Thus the role of tangential stresses towards determining collapse endstates emerges in a straightforward and transparent manner in our treatment.
description: 16 pages, 4 figures
Survey items from Age differences in COVID-19 risk-taking, and the relationship with risk attitude and numerical ability
Creators: name: Wolfe, Kelly
name: Sirota, Miroslav
name: Clarke, Alasdair D. F.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: The online survey used for this project can be found here.
Supplementary Table S2 from Age differences in COVID-19 risk-taking, and the relationship with risk attitude and numerical ability
Creators: name: Wolfe, Kelly
name: Sirota, Miroslav
name: Clarke, Alasdair D. F.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: Means and standard deviations of COVID-19 preventative behaviours, separated by age group.
2+1 dimensional magnetically charged solutions in Einstein - Power - Maxwell theory
Creators: name: Mazharimousavi, S. Habib
name: Gurtug, O.
name: Halilsoy, M.
name: Unver, O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We obtain a class of magnetically charged solutions in 2+1 dimensional Einstein - Power - Maxwell theory. In the linear Maxwell limit, such horizonless solutions are known to exist. We show that in 3D geometry, black hole solutions with magnetic charge does not exist even if it is sourced by power-Maxwell field. Physical properties of the solution with particular power k of the Maxwell field is investigated. The true timelike naked curvature singularity develops when k>1 which constitutes one of the striking effects of the power Maxwell field. For specific power parameter k, the occurrence of timelike naked singularity is analysed in quantum mechanical point of view. Quantum test fields obeying the Klein - Gordon and the Dirac equations are used to probe the singularity. It is shown that the class of static pure magnetic spacetime in the power Maxwell theory is quantum mechanically singular when it is probed with fields obeying Klein-Gordon and Dirac equations in the generic case.
description: 10 pages, no figure, new references are added, Minor changes have been done. To appear in PRD
Additional file 2 of Association between fluid balance and mortality for heart failure and sepsis: a propensity score-matching analysis
Creators: name: Zhang, Bufan
name: Guo, Shaohua
name: Fu, Zean
name: Wu, Naishi
name: Liu, Zhigang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Supplementary Material 2
Supplementary Table S1 from Age differences in COVID-19 risk-taking, and the relationship with risk attitude and numerical ability
Creators: name: Wolfe, Kelly
name: Sirota, Miroslav
name: Clarke, Alasdair D. F.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: Overview of measures variables and materials used
Power analysis from Age differences in COVID-19 risk-taking, and the relationship with risk attitude and numerical ability
Creators: name: Wolfe, Kelly
name: Sirota, Miroslav
name: Clarke, Alasdair D. F.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: This document outlines the details of the power analysis used to estimate the required sample size for this project.
Controllable manipulation and detection of local densities and bipartite entanglement in a quantum gas by a dissipative defect
Creators: name: Barmettler, Peter
name: Kollath, Corinna
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the complex dynamics of a one-dimensional Bose gas subjected to a dissipative local defect which induces one-body atom losses. In experiments these atom losses occur, for example, when a focused electron or light beam or a single trapped ion is brought into contact with a quantum gas. We discuss how within such setups one can measure or manipulate densities locally and specify the excitations that are induced by the defect. In certain situations the defect can be used to generate entanglement in a controlled way despite its dissipative nature. The careful examination of the interplay between hole excitations and the collapse of the wave function due to nondetection of loss is crucial for the understanding of the dynamics we observe.
description: 4+ pages, 3 figures
Uniaxial versus hydrostatic pressure-induced phase transitions in CaFe2As2 and BaFe2As2
Creators: name: Tomic, Milan
name: Valenti, Roser
name: Jeschke, Harald O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present uniaxial pressure structural relaxations for CaFe2As2 and BaFe2Ase2 within density functional theory and compare them with calculations under hydrostatic pressure conditions as well as available experimental results. We find that CaFe2As2 shows a unique phase transition from a magnetic orthorhombic phase to a nonmagnetic collapsed tetragonal phase for both pressure conditions and no indication of a tetragonal phase is observed at intermediate uniaxial pressures. In contrast, BaFe2As2 shows for both pressure conditions two phase transitions from a magnetic orthorhombic to a collapsed tetragonal phase through an intermediate nonmagnetic tetragonal phase. We find that the critical transition pressures under uniaxial conditions are much lower than those under hydrostatic conditions manifesting the high sensitivity of the systems to uniaxial stress. We discuss the origin of this sensitivity and its relation to superconductivity.
description: 5 pages, 4 figures
Dynamics of poles with position-dependent strengths and its optical analogues
Creators: name: Montaldi, James
name: Tokieda, Tadashi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 70F05, 70F10, 34A38

description: The dynamics of point vortices is generalized in two ways: first by making the strengths complex, which allows for sources and sinks in superposition with the usual vortices, second by making them functions of position. These generalizations lead to a rich dynamical system, which is nonlinear and yet has conservation laws coming from a Hamiltonian-like formalism. We then discover that in this system the motion of a pair mimics the behavior of rays in geometric optics. We describe several exact solutions with optical analogues, notably Snell's law and the law of reflection off a mirror, and perform numerical experiments illustrating some striking behavior.
description: 10 pages
Population-based assessment of relationship between volume of practice and outcomes in head and neck cancer patients
Creators: name: McLay, Mary
Publisher: name: University of British Columbia
Year: 2017

description: Background and Purpose: Recent literature has suggested that higher volumes of practice are associated with better survival outcomes for head and neck cancer (HNC) patients. However, these studies are limited by looking at the volume of practice on a cancer centre level (i.e. not provider level), and include jurisdictions without central coordination and specialized HNC tumor group support. The objective of this thesis was to evaluate the effect of treatment centre on the overall survival (OS) and cancer-specific survival (CSS) of HNC patients in British Columbia in a provincially coordinated program. Methods: The BC Cancer Registry (BCCR), a population-based provincial database, was used to identify all patients in BC diagnosed for the first time with a primary non-thyroid HNC and treated with radiotherapy between 2006 and 2011. Patients were categorized as residing in large, small and rural local health authorities (LHAs) using BC Stats and BC Ministry of Health information. Physician case frequency was defined as low (0-14 cases per year), medium (15-29 cases per year) and high (>30 cases per year). There was no effect on OS or head and neck CSS when physician case frequency was treated as a continuous variable. Results: 2,330 HNC patients were included in the study. On multivariable analysis, after controlling for age, gender, cancer stage, anatomical site, treatment and physician case frequency, neither head and neck CSS (HNCSS) (HR range=0.86-1.03; p=0.54-0.99) nor OS (HR range=0.91-1.05; p=0.60-0.88) was significantly different by centre. OS was also not significantly different for patients treated by physicians with low case frequency (HR=0.96; 0.81-1.13; p=0.60) and medium case frequency (HR=1.12; 0.84-1.49; p=0.43) in reference to high case frequency. Conclusions: There was no significant difference in survival among BC cancer centres after controlling for differences in rurality, physician case volume and other potential confounding variables. This lack of difference may be in large part due to the centrally coordinated population-run program where radiation oncologists subspecialize, follow provincial guidelines, attend multidisciplinary rounds, have access to radiotherapy quality assurance, and are supported by a HNC tumor group.
Additional file 3 of Association between fluid balance and mortality for heart failure and sepsis: a propensity score-matching analysis
Creators: name: Zhang, Bufan
name: Guo, Shaohua
name: Fu, Zean
name: Wu, Naishi
name: Liu, Zhigang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Supplementary Material 3
Distributed Learning Policies for Power Allocation in Multiple Access Channels
Creators: name: Mertikopoulos, Panayotis
name: Belmega, Elena V.
name: Moustakas, Aris L.
name: Lasaulce, Samson
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: We analyze the problem of distributed power allocation for orthogonal multiple access channels by considering a continuous non-cooperative game whose strategy space represents the users' distribution of transmission power over the network's channels. When the channels are static, we find that this game admits an exact potential function and this allows us to show that it has a unique equilibrium almost surely. Furthermore, using the game's potential property, we derive a modified version of the replicator dynamics of evolutionary game theory which applies to this continuous game, and we show that if the network's users employ a distributed learning scheme based on these dynamics, then they converge to equilibrium exponentially quickly. On the other hand, a major challenge occurs if the channels do not remain static but fluctuate stochastically over time, following a stationary ergodic process. In that case, the associated ergodic game still admits a unique equilibrium, but the learning analysis becomes much more complicated because the replicator dynamics are no longer deterministic. Nonetheless, by employing results from the theory of stochastic approximation, we show that users still converge to the game's unique equilibrium. Our analysis hinges on a game-theoretical result which is of independent interest: in finite player games which admit a (possibly nonlinear) convex potential function, the replicator dynamics (suitably modified to account for nonlinear payoffs) converge to an eps-neighborhood of an equilibrium at time of order O(log(1/eps)).
description: 11 pages, 8 figures. Revised manuscript structure and added more material and figures for the case of stochastically fluctuating channels. This version will appear in the IEEE Journal on Selected Areas in Communication, Special Issue on Game Theory in Wireless Communications
Asymptotically Safe Gravitons in Electroweak Precision Physics
Creators: name: Gerwick, Erik
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Asymptotic safety offers a field theory based UV completion to gravity. For low Planck scales, gravitational effects on low-energy precision observables cannot be neglected. We compute the contribution to the rho parameter from asymptotically safe gravitons and find that in contrast to effective theory, constraints on models with more than three extra dimensions are significantly weakened. The relative size of the trans-Planckian contribution increases proportional to the number of extra dimensions.
description: Published version; added references and additional minor changes including appendix
Engaging Stakeholders through Twitter: How Nonprofit Organizations are Getting More Out of 140 Characters or Less
Creators: name: Lovejoy, Kristen
name: Waters, Richard
name: Saxton, Gregory D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: 140 characters seems like too small a space for any meaningful information to be exchanged, but Twitter users have found creative ways to get the most out of each Tweet by using different communication tools. This paper looks into how 73 nonprofit organizations use Twitter to engage stakeholders not only through their tweets, but also through other various communication methods. Specifically, it looks into the organizations' utilization of tweet frequency, following behavior, hyperlinks, hashtags, public messages, retweets, and multimedia files. After analyzing 4,655 tweets, the study found that the nation's largest nonprofits are not using Twitter to maximize stakeholder involvement. Instead, they continue to use social media as a one-way communication channel, as less than 20% of their total tweets demonstrate conversations and roughly 16% demonstrate indirect connections to specific users.
description: In press, Public Relations Review; 10 pages
Additional file 4 of Association between fluid balance and mortality for heart failure and sepsis: a propensity score-matching analysis
Creators: name: Zhang, Bufan
name: Guo, Shaohua
name: Fu, Zean
name: Wu, Naishi
name: Liu, Zhigang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Supplementary Material 4
Scaling relations for the entire spectrum in mass-deformed conformal gauge theories
Creators: name: Del Debbio, Luigi
name: Zwicky, Roman
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider mass-deformed conformal gauge theories (mCGT) and investigate the scaling behaviour of hadronic observables as a function of the fermion mass. Applying renormalization group arguments directly to matrix elements, we find m_H ~ m^{1/(1+gamma*)} and F ~ m^{η_F(gamma*)} for the decay constants, thereby generalizing our results from a previous paper to the entire spectrum. We derive the scaling law m_H m^{1/(1+gamma*)} using the Hellmann-Feynman theorem, and thus provide a derivation which does not rely on renormalization group arguments. Using the new results we reiterate, on the phenomenologically important, S-parameter. Finally, we discuss how spectral representations can be used to relate the mass and decay constant trajectories.
description: 11 pages; typos removed, additional comments, version to appear in PLB
Ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a hot strongly magnetized plasma
Creators: name: Liu, Wei
name: Hsu, Scott C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present results from three-dimensional ideal magnetohydrodynamic simulations of unmagnetized dense plasma jet injection into a uniform hot strongly magnetized plasma, with the aim of providing insight into core fueling of a tokamak with parameters relevant for ITER and NSTX (National Spherical Torus Experiment). Unmagnetized dense plasma jet injection is similar to compact toroid injection but with much higher plasma density and total mass, and consequently lower required injection velocity. Mass deposition of the jet into the background appears to be facilitated via magnetic reconnection along the jet's trailing edge. The penetration depth of the plasma jet into the background plasma is mostly dependent on the jet's initial kinetic energy, and a key requirement for spatially localized mass deposition is for the jet's slowing-down time to be less than the time for the perturbed background magnetic flux to relax due to magnetic reconnection. This work suggests that more accurate treatment of reconnection is needed to fully model this problem. Parameters for unmagnetized dense plasma jet injection are identified for localized core deposition as well as edge localized mode (ELM) pacing applications in ITER and NSTX-relevant regimes.
description: 16 pages, 8 figures and 2 tables; accepted by Nuclear Fusion (May 11, 2011)
Difference at play : an ethnography of discourse and drama in multiracial classrooms in a Francophone minority language school
Creators: name: Schroeter, Sara
Publisher: name: University of British Columbia
Year: 2017

description: This dissertation explores discourses of difference used by students throughout one year in a Francophone minority language school. This ethnography was conducted in the students’ social studies classes, where drama was used as a (post)critical pedagogy to teach and explore differences embedded in the curriculum. Drawing on critical, Indigenous, and poststructural theories this project explores how the students used discourses of difference in their interactions in and out of the classroom and during dramatic work. This study reveals that the participating youth used categories of difference, like race, ethnicity, indigeneity, class, and youth, in ways marked by ambiguity, humour, irony, and dissatisfaction, as well as attempts to govern and discipline the boundaries of these constructed categories. Discourses of race consistently emerged in informal educational spaces, such as school hallways; however, the students avoided them in the formal classroom space, a practice linked to the dominance of whiteness in the Canadian educational context. Drama activities created liminal spaces that disrupted the discursive distinction between informal and formal educational spaces, allowing limited access to the students’ informal discourses of race during instructional time. Overarching schooling structures made seizing such moments difficult, in order to disrupt and unpack categories of difference. Furthermore, the students’ problematic racial humour and representational practices surfaced during and immediately following classroom drama activities in ways that reinforced colonial ideas about belonging and unbelonging in Canadian schools. This study fills gaps in existing research on Francophone minority language schooling by exploring how race, ethnicity, indigeneity, class, and gender intersected in the identifications and discourses of participating youth. These findings trouble the myth of seamless integration in minority language Francophone schools and suggest that linguistic affiliation is an insufficient basis for inclusion and that schools must work to address the significant impact that differences of race, ethnicity, indigeneity, class, and gender have on youth’s lives. Furthermore, this study complicates literature in drama-in-education by examining the possibilities and limitations applied theatre affords for unpacking categories of difference in the classroom. It proposes that pedagogical approaches that are explicitly anti-racist and decolonizing are needed in order to achieve such results.
Additional file 5 of Association between fluid balance and mortality for heart failure and sepsis: a propensity score-matching analysis
Creators: name: Zhang, Bufan
name: Guo, Shaohua
name: Fu, Zean
name: Wu, Naishi
name: Liu, Zhigang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Supplementary Material 5
Polynomial identity rings as rings of functions, II
Creators: name: Vonessen, Nikolaus
Publisher: name: arXiv
Year: 2010
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R30, 16R20 (Primary) 14L30, 14A10 (Secondary)

description: In characteristic zero, Zinovy Reichstein and the author generalized the usual relationship between irreducible Zariski closed subsets of the affine space, their defining ideals, coordinate rings, and function fields, to a non-commutative setting, where "varieties" carry a PGL_n-action, regular and rational "functions" on them are matrix-valued, "coordinate rings" are prime polynomial identity algebras, and "function fields" are central simple algebras of degree n. In the present paper, much of this is extended to prime characteristic. In addition, a mistake in the earlier paper is corrected. One of the results is that the finitely generated prime PI-algebras of degree n are precisely the rings that arise as "coordinate rings" of "n-varieties" in this setting. For n = 1 the definitions and results reduce to those of classical affine algebraic geometry.
description: 24 pages, LaTeX. Many changes. Theorem II.1.3 has been strengthened, Sections II.6-II.8 have been rewritten, and Section II.9 is new
Determining the volume optimal parameter values for multi-phase permanent magnet synchronous motors with switchable coil configuration
Creators: name: Boxriker, Miriam
name: Kolb, Johannes
name: Doppelbauer, Martin
Publisher: name: Karlsruhe
Year: 2018
Subjects: Permanent magnet motor
Multiphase drive
Synchronous motor
Electrical machine
Electric Vehicle

description: This contribution suggests an approach to determine the optimal parameter values of permanent magnet flux linkage and saliency ratio of Permanent Magnet Synchronous Motors with multi-phase windings and coil configuration switching. Therein, their influence on volume is calculated analytically for both motor and power electronics in a unified manner identifying promising designs. Of the exemplary design parameters, a maximum volume reduction of 27% can be achieved. An experimental validation supports the analytic calculation of the motor torque vs. speed behavior.
Anderson-like Transition for a Class of Random Sparse Models in d >= 2 Dimensions
Creators: name: Marchetti, Domingos H. U.
name: Wreszinski, Walter F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q10, 42A38, 46N50, 35P05

description: We show that the Kronecker sum of d >= 2 copies of a random one-dimensional sparse model displays a spectral transition of the type predicted by Anderson, from absolutely continuous around the center of the band to pure point around the boundaries. Possible applications to physics and open problems are discussed briefly.
description: 19 pages, 1 figure. New version corrects misprints and adds pertaining references
Quasi-stationary chaotic states in multi-dimensional Hamiltonian systems
Creators: name: Antonopoulos, Chris G.
name: Bountis, Tassos C.
name: Basios, Vasileios
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study numerically statistical distributions of sums of chaotic orbit coordinates, viewed as independent random variables, in weakly chaotic regimes of three multi-dimensional Hamiltonian systems: Two Fermi-Pasta-Ulam (FPU-$β$) oscillator chains with different boundary conditions and numbers of particles and a microplasma of identical ions confined in a Penning trap and repelled by mutual Coulomb interactions. For the FPU systems we show that, when chaos is limited within "small size" phase space regions, statistical distributions of sums of chaotic variables are well approximated for surprisingly long times (typically up to $t\approx10^6$) by a $q$-Gaussian ($1
description: 32 pages, 13 figures, Submitted for publication to Physica A