cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Curvature and Entropy Perturbations in Generalized Gravity
Creators: name: Ji, Xiangdong
name: Wang, Tower
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the cosmological perturbations in generalized gravity, where the Ricci scalar and a scalar field are non-minimally coupled via an arbitrary function. In the Friedmann-Lemaitre-Robertson-Walker background, by studying the linear perturbation theory, we separate the scalar type perturbations into the curvature perturbation and the entropy perturbation, whose evolution equations are derived. Then we apply this framework to inflation. We consider the generalized slow-roll conditions and the quantization initial condition. Under these conditions, two special examples are studied analytically. One example is the case with no entropy perturbation. The other example is a model with the entropy perturbation large initially but decaying significantly after crossing the horizon.
description: 30 pages, 4 figures, references added
Heavy colored resonances in top-antitop + jet at the LHC
Creators: name: Ferrario, Paola
name: Rodrigo, German
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The LHC is the perfect environment for the study of new physics in the top quark sector. We study the possibility of detecting signals of heavy color-octet vector resonances, through the charge asymmetry, in top-antitop+jet events. Besides contributions with the top-antitop pair in a color-singlet state, the asymmetry gets also contributions which are proportional to the color factor f_{abc}^2. This process is particularly interesting for extra-dimensional models, where the inclusive charge asymmetry generated by Kaluza-Klein excitations of the gluon vanishes at the tree level. We find that the statistical significance for the measurement of such an asymmetry is sizable for different values of the coupling constants and already at low energies.
Robust Bayesian Target Value Optimization
Creators: name: Hoffer, Johannes G.
name: Ranftl, Sascha
name: Geiger, Bernhard C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: G.1.6
subject: 90C26, 60G15

description: We consider the problem of finding an input to a stochastic black box function such that the scalar output of the black box function is as close as possible to a target value in the sense of the expected squared error. While the optimization of stochastic black boxes is classic in (robust) Bayesian optimization, the current approaches based on Gaussian processes predominantly focus either on i) maximization/minimization rather than target value optimization or ii) on the expectation, but not the variance of the output, ignoring output variations due to stochasticity in uncontrollable environmental variables. In this work, we fill this gap and derive acquisition functions for common criteria such as the expected improvement, the probability of improvement, and the lower confidence bound, assuming that aleatoric effects are Gaussian with known variance. Our experiments illustrate that this setting is compatible with certain extensions of Gaussian processes, and show that the thus derived acquisition functions can outperform classical Bayesian optimization even if the latter assumptions are violated. An industrial use case in billet forging is presented.
description: 24 pages; submitted to Computers and Industrial Engineering
Clues from the prompt emission of GRB 080319B
Creators: name: Zou, Y. C.
name: Piran, T.
name: Sari, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The extremely bright optical flash that accompanied GRB 080319B suggested, at first glance, that the prompt $γ$-rays in this burst were produced by Synchrotron self Compton (SSC). We analyze here the observed optical and $γ$ spectrum. We find that the very strong optical emission poses, due to self absorption, very strong constraints on the emission processes and put the origin of the optical emission at a very large radius, almost inconsistent with internal shock. Alternatively it requires a very large random Lorentz factor for the electrons. We find that SSC could not have produced the prompt $γ$-rays. We also show that the optical emission and the $γ$ rays could not have been produced by synchrotron emission from two populations of electron within the same emitting region. Thus we must conclude that the optical and the $γ$-rays were produced in different physical regions. A possible interpretation of the observations is that the $γ$-rays arose from internal shocks but the optical flash resulted from external shock emission. This would have been consistent with the few seconds delay observed between the optical and $γ$-rays signals.
‘They've [practitioners] got to understand that racism impacts Aboriginal people on a daily basis, inside and outside their home’
Creators: name: ATKINSON, PETAH ROSA LEE ANNE
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 451907
subject: Indigenous methodologies
classificationCode: 390110
subject: Medicine, nursing and health curriculum and pedagogy

description: The aim of this research was to examine Aboriginal health consumers’ experiences with medical practitioners. Additionally, it sought to understand how Aboriginal health consumers’ experiences have been represented in Australian pre-vocational medical education curriculum policies. To address this aim, this thesis presents three studies. The first study applied Yarning method to understand Aboriginal people’s experiences and perspectives with medical practitioners, in relation to five capabilities outlined in the Aboriginal and Torres Strait Islander Health Curriculum Framework. The second study analysed Yarning data to better understand relationally underpinning Yarns. The final study analysed how racism and anti-racism are framed in medical education policies.
Humor and Play in Language Classroom Interaction: A Review of the Literature
Creators: name: Reddington, Elizabeth
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: The past two decades have seen a growing interest in the role of humor and play in secondlanguage (L2) learning and teaching. Vega (1990) went as far as to propose viewing humor as a fifth element of communicative competence; more recently, Cook (2000) has argued that language play should be regarded as “both a means and an end of language learning” (p. 204). Teachers have, in fact, long been advised to introduce elements of humor and play into the language classroom (e.g., Holmes, 1980; Schmitz, 2002; Trachtenberg 1979). However, as Bell (2009, 2011, 2013) has pointed out, such recommendations have largely been based on assumptions and intuitions rather than empirical research. Studies of specific pedagogical interventions have generally been lacking (Bell, 2013).
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 2 (2015)
On the discrepancies in the low energy neutron-deuteron breakup
Creators: name: Witala, H.
name: Glockle, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In view of recent neutron-deuteron (nd) breakup data for neutron-neutron (nn) and neutron-proton (np) quasi-free-scattering (QFS) arrangements and the large discrepancy found between theoretical predictions and measured nn QFS cross sections, we analyze the sensitivity of the QFS cross sections to different partial wave components of the nucleon-nucleon (NN) interaction. We found that the QFS cross section is strongly dominated by the 1S0 and 3S1-3D1 contributions. Because the standard three-nucleon force (3NF) only weakly influence the QFS region, we conjecture, that it must be the nn 1S0 force component which is responsible for the discrepancy in the nn QFS peak. A stronger 1S0 nn force is required to bring theory and data into agreement. Such an increased strength of the nn interaction will, however, not help to explain the nd breakup symmetric-space-star (SST) discrepancy. Further experimental cross-checkings are required.
description: 17 pages, 10 figures
Rethinking for Second Language Speaking
Creators: name: Sáez, Natalia
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: Slobin’s (1996) thinking for speaking hypothesis has been recently adopted by second language researchers as a valuable lens from which to examine the complexities of possible conceptual restructuring during interlanguage development. This paper reviews a sample of studies analyzing the linguistic and conceptual patterns observed in second language learners while using their respective target languages. Discussions focus on issues central to second language acquisition and the understanding of interlanguage from a meaning perspective.
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 2 (2015)
The Noncommutative S-Matrix
Creators: name: Raju, Suvrat
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: As a simple example of how recently developed on-shell techniques apply to nonlocal theories, we study the S-matrix of noncommutative gauge theories. In the complex plane, this S-matrix has essential singularities that signal the nonlocal behavior of the theory. In spite of this, we show that tree-level amplitudes may be obtained by BCFW type recursion relations. At one loop we find a complete basis of master integrals (this basis is larger than the corresponding basis in the ordinary theory). Any one-loop noncommutative amplitude may be written as a linear combination of these integrals with coefficients that we relate to products of tree amplitudes. We show that the noncommutative N=4 SYM theory has a structurally simple S-matrix, just like the ordinary N=4 SYM theory.
description: 44 pages
Readers' Credits for Volume 15, Issue 1
Creators: name: Seong, Yuna
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: Teachers College, Columbia University Working Papers in TESOL & Applied Linguistics would like to thank the following individuals for reviewing the contributions for Volume 15, Issue 1 (2015).
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 1 (2015)
Watch and learn. Active, directed observation of simulated events as an effective learning method.
Creators: name: O'REGAN, STEPHANIE
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 390114
subject: Vocational education and training curriculum and pedagogy

description: Healthcare simulation is an experiential learning method. However hands-on roles are limited and many learners are observers of the simulation scenario. This thesis identifies strategies to support simulation educators in maximising learning for those in the observer role.
An Interview with APPLE Lecture Speaker Professor James Paul Gee
Creators: name: Tadic, Nadja
name: Yu, Di
name: Seong, Yuna
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: On February 6, 2015, the TESOL/AL Web Journal (represented by Nadja Tadic, Di Yu, and Yuna Seong) had the opportunity to sit down with Professor James Paul Gee, guest speaker for the 2015 Applied Linguistics & Language Education (APPLE) Lecture Series, hosted annually by the TESOL/Applied Linguistics Programs at Teachers College, Columbia University. Professor Gee spoke about his thoughts on his work and advice for current and future researchers in the TESOL and Applied Linguistics fields.
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 1 (2015)
Reduction and construction of Poisson quasi-Nijenhuis manifolds with background
Creators: name: Cordeiro, Flavio
name: da Costa, Joana M. Nunes
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We extend the Falceto-Zambon version of Marsden-Ratiu Poisson reduction to Poisson quasi-Nijenhuis structures with background on manifolds. We define gauge transformations of Poisson quasi-Nijenhuis structures with background, study some of their properties and show that they are compatible with reduction procedure. We use gauge transformations to construct Poisson quasi-Nijenhuis structures with background.
description: to appear in IJGMMP
Understanding Silence and Reticence: Ways of Participating in Second Language Acquisition
Creators: name: Karas, Michael
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: For many language teachers, a significant amount of classroom time is dedicated to helping students speak. Generally silent or reticent students are often encouraged to participate and speak more; their silence is deemed counterproductive and/or non-participatory. Because of this, much second-language acquisition (SLA) research has been dedicated to talk in the classroom and ways that it can be improved and encouraged by both students and teachers alike. However, while talk is an important element of a second-language (L2) classroom, silence can be equally important. In Understanding Silence and Reticence: Ways of Participating in Second Language Acquisition, Dat Bao takes a close look at this often neglected element of the L2 classroom and offers insights into the role of silence in SLA.
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 1 (2015)
Ammonia gas recovery from waste streams using bipolar membrane electrodialysis : performance limiting study and system optimization
Creators: name: Senanayake, Senanayake Mudiyanselage Aroshi Erandika
Publisher: name: University of British Columbia
Year: 2023

description: Ammonia is a versatile compound for fertilizer, refrigerant, and chemical production, as well as a potential hydrogen carrier for fuel cell vehicles. Wastewater is a sustainable ammonia source which can largely substitute the conventional ammonia production via the Haber-Bosch process. Bipolar membrane electrodialysis (BMED), combined with a membrane contactor, holds promise for electrified, chemical-free ammonia recovery from wastewater. However, ammonia leakage through the ion exchange membranes (IEMs) and limited recovery rates remain among the major challenges in implementing this new approach. Our study focuses on understanding these limitations and optimizing the BMED configuration. We first examine the mode of ammonia leakage through IEMs and find that its transfer across the membranes occurs as a gas phase. Subsequently, we investigate the relation between the cross-stack electric potential, as driving force for ammonia gas production, to the extent of ammonia leakage and its recovery efficiency. We find that a lower cross-stack potential slows down the ammonia leakage at the cost of reduced ammonia recovery due to the insufficient rate of water splitting inside the bipolar membranes. Then, the impact of mass transfer resistance across IEMs on the ammonia leakage and recovery is investigated by introducing multiple layers of IEMs. We find that there is an optimal number of IEMs layers that allows for minimizing ammonia leakage as low as 2% and achieving high ammonia recovery as high as 63%, along with an energy consumption comparable to industrial Haber Bosch process (0.6 MJ/mol-N). Finally, a new BMED configuration with an additional compartment of saline solution is examined as an alternative to prevent ammonia leakage. This configuration achieves an 86% recovery rate and virtually zero ammonia leakage but requires external chemical input. Our study highlights the potential of highly efficient ammonia recovery from wastewater using BMED through optimizing BMED operating parameters and configurations.
An investigation of factors influencing physiotherapy students' course performance and early career intentions
Creators: name: PAYNTER, SOPHIE LANSELL
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 390114
subject: Vocational education and training curriculum and pedagogy
classificationCode: 420106
subject: Physiotherapy

description: The Australian physiotherapy workforce is currently in shortage; strategies are needed to increase its capacity to deal with future demand from factors such as the ageing population. The research presented in this thesis provides evidence that preregistration education providers can contribute to growing workforce capacity. Potential strategies include assessing personal and behavioural characteristics at course selection, providing curricula that promote deeper learning approaches and motivation, and supporting positive clinical placement experiences. Structured support during the early career period can also facilitate longer-term career intentions of physiotherapy graduates.
Who’s got the power? A critical analysis of non-Indigenous people’s positioning relating to Aboriginal plant foods
Creators: name: MCCARTAN, JULIA ROSE
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 500302
subject: Critical theory
classificationCode: 450106
subject: Aboriginal and Torres Strait Islander ethics
classificationCode: 321005
subject: Public health nutrition
classificationCode: 470213
subject: Postcolonial studies

description: In settler colonised Australia, there is growing interest in and complexity regarding the commercialisation of Aboriginal plant foods. This thesis examined the positioning and power of non-Indigenous people operating in this context. Through the application of critical methodology and method, tacit ways that settler colonisation is upheld in the food system were revealed. This thesis revealed several tensions for non-Indigenous people and some options when looking to the future. This thesis advances understanding of how power operates in research, policy and the Aboriginal plant foods industry.
The Trace Anomaly and Massless Scalar Degrees of Freedom in Gravity
Creators: name: Giannotti, Maurizio
name: Mottola, Emil
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The trace anomaly of quantum fields in electromagnetic or gravitational backgrounds implies the existence of massless scalar poles in physical amplitudes involving the stress-energy tensor. Considering first the axial anomaly and using QED as an example, we compute the full one-loop triangle amplitude of the fermionic stress tensor with two current vertices, , and exhibit the scalar pole in this amplitude associated with the trace anomaly, in the limit of zero electron mass m -> 0. To emphasize the infrared aspect of the anomaly, we use a dispersive approach and show that this amplitude and the existence of the massless scalar pole is determined completely by its ultraviolet finite terms, together with the requirements of Poincare invariance of the vacuum, Bose symmetry under interchange of J^a and J^b, and vector current and stress tensor conservation. We derive a sum rule for the appropriate positive spectral function corresponding to the discontinuity of the triangle amplitude, showing that it becomes proportional to delta function of k^2, and therefore contains a massless scalar intermediate state in the conformal limit of zero electron mass. The effective action corresponding to the trace of the triangle amplitude can be expressed in local form by the introduction of two scalar auxiliary fields which satisfy massless wave equations. These massless scalar degrees of freedom couple to classical sources, contribute to gravitational scattering processes, and can have long range gravitational effects.
description: 60 pages, 11 Figures (pdf)
Variational Cross-Graph Reasoning and Adaptive Structured Semantics Learning for Compositional Temporal Grounding
Creators: name: Li, Juncheng
name: Tang, Siliang
name: Zhu, Linchao
name: Zhang, Wenqiao
name: Yang, Yi
name: Chua, Tat-Seng
name: Wu, Fei
name: Zhuang, Yueting
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Temporal grounding is the task of locating a specific segment from an untrimmed video according to a query sentence. This task has achieved significant momentum in the computer vision community as it enables activity grounding beyond pre-defined activity classes by utilizing the semantic diversity of natural language descriptions. The semantic diversity is rooted in the principle of compositionality in linguistics, where novel semantics can be systematically described by combining known words in novel ways (compositional generalization). However, existing temporal grounding datasets are not carefully designed to evaluate the compositional generalizability. To systematically benchmark the compositional generalizability of temporal grounding models, we introduce a new Compositional Temporal Grounding task and construct two new dataset splits, i.e., Charades-CG and ActivityNet-CG. When evaluating the state-of-the-art methods on our new dataset splits, we empirically find that they fail to generalize to queries with novel combinations of seen words. We argue that the inherent structured semantics inside the videos and language is the crucial factor to achieve compositional generalization. Based on this insight, we propose a variational cross-graph reasoning framework that explicitly decomposes video and language into hierarchical semantic graphs, respectively, and learns fine-grained semantic correspondence between the two graphs. Furthermore, we introduce a novel adaptive structured semantics learning approach to derive the structure-informed and domain-generalizable graph representations, which facilitate the fine-grained semantic correspondence reasoning between the two graphs. Extensive experiments validate the superior compositional generalizability of our approach.
description: arXiv admin note: substantial text overlap with arXiv:2203.13049
Light scattering for thermometry of fermionic atoms in an optical lattice
Creators: name: Ruostekoski, J.
name: Foot, C. J.
name: Deb, A. B.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a method for measuring the temperature of fermionic atoms in an optical lattice potential from the intensity of the scattered light in the far-field diffraction pattern. We consider a single-component gas in a tightly-confined two-dimensional lattice, illuminated by far off-resonant light driving a cycling transition. Our calculations show that thermal correlations of the fermionic atoms generate fluctuations in the intensity of the diffraction pattern of light scattered from the atomic lattice array and that this signal can be accurately detected above the shot noise using a lens to collect photons scattered in a forward direction (with the diffraction maxima blocked). The sensitivity of the thermometer is enhanced by an additional harmonic trapping potential.
description: submitted to PRL in January 2009
KO'L BAQASINING TUZILISHI VA RIVOJLANISHI ,YASHASH MUHITI VA HAYOT KECHIRISHI.
Creators: name: Ma'rifjonova, Xursanoy
Publisher: name: Zenodo
Year: 2023

description: Ushbu tezisda suvda hamda quruqlikda yashovchilar tarkibiga kiruvchi ko'l baqasini tuzilishi, tarqalishi , organlar sistemasi, yashash muhiti va hayot  kechirishi haqida ma'lumotlar keltirilgan.
Language Learning Beyond the Classroom
Creators: name: Durkis, Andrea E.
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: David Nunan and Jack C. Richards have compiled an engaging collection of case studies focusing on out-of-class activities that facilitate autonomous learning for second language (L2) learners. Inspired by years of observing how successful language learners throughout the world are often highly motivated, reflect on their progress, set their own goals, and seek out opportunities for language learning outside the classroom, the editors present a wide range of resources and opportunities currently available for bringing learning beyond the classroom and promoting autonomous learning. Citing learning contexts in Asia, Europe, North and South America, and Australia/Oceania, this book provides information on how out-of-class learning activities can be designed, planned for, and implemented for L2 learners.
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 1 (2015)
Photons from dark photon solitons via parametric resonance
Creators: name: Amin, Mustafa A.
name: Long, Andrew J.
name: Schiappacasse, Enrico D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Wave-like dark matter made of spin-1 particles (dark photons) is expected to form ground state clumps called "vector solitons", which can have different polarizations. In this work, we consider the interaction of dark photons with photons, expressed as dimension-6 operators, and study the electromagnetic radiation that arises from an isolated vector soliton due to parametric resonant amplification of the ambient electromagnetic field. We characterize the directional dependence and polarization of the outgoing radiation, which depends on the operator as well as the polarization state of the underlying vector soliton. We discuss the implications of this radiation for the stability of solitons and as a possible channel for detecting mergers of vector solitons through astrophysical observations.
description: 30 pages, 2 figures. V2: Updated towards version published in JCAP
From Aha Moments to Ethnomethodology: A Conversation with Hugh Mehan
Creators: name: Tadic, Nadja
name: Yu, Di
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: On April 1, 2015, Professor Hansun Waring’s doctoral seminar had the great pleasure and honor of being joined over Skype by Dr. Hugh (Bud) Mehan, Professor Emeritus at the University of California, San Diego and author of the 1979 classic Learning Lesson: Social Organization in the Classroom. Dr. Mehan has done extensive research on classroom organization and interaction, educational testing, tracking and untracking, construction of student identities in the classroom, and so on. He has managed to achieve the delicate and yet crucial balance that so many educators and education researchers aspire to—the balance between doing research and improving the world. He has not only shaped the academic discourse on education issues but has been directly working with the most vulnerable members of our society in overcoming and amending those issues. His work has been an inspiration to so many of us whose research passions and real-life concerns lie in education, classroom interaction, and social inequity.
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 1 (2015)
On the Debye temperature in sigma-phase Fe-V alloys
Creators: name: Cieslak, Jakub
name: Reissner, Michael
name: Dubiel, Stanislaw M.
name: Costa, Benilde F. O.
name: Steiner, Walter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A series of sigma-phase Fe_{100-x}V_x samples with 34.4 < x < 59.0 were investigated by neutron and X-ray diffraction and Mossbauer spectroscopy (MS) techniques. The first two methods were used for verification of the transformation from alpha to sigma phase and they also permitted to determine lattice parameters of the unit cell. With MS the Debye temperature, T_D, was evaluated from the temperature dependence of the centre shift, , assuming its entire temperature dependence originates from the second-order Doppler shift. To our best knowledge, it is the first ever-reported study on T_D in sigma-FeV alloys. Both attice parameters i.e. a and c were revealed to linearly increase with x. T_D shows, however, a non-monotonic behaviour as a function of composition with its extreme values between 425K for x=40 and 600K for x=59. A local maximum of 525K was found to exist at x=43.
Trainee identity development and the general practice supervisory relationship. A critical realist perspective.
Creators: name: Brown, James
Publisher: name: Monash University
Year: 2021
Subjects: classificationCode: 390303
subject: Higher education
classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: This thesis provides a theoretical framework for the identity development of general practice trainees; particularly within the context of the supervisory relationship. This is important because a clinician’s professional identity frames their clinical practice. Identity development happens in the context of relationships and the supervisory relationship is a key relationship for general practice trainees. The work of this thesis draws on empirical data and takes a critical realist approach to theory building. The framework will inform general practice training in Australia so that training can effectively support the identity development of trainees within their supervisory relationships.
Analog Schwarzschild black holes of Bose-Einstein condensates in a cavity: Quasinormal modes and quasibound states
Creators: name: Vieira, H. S.
name: Destounis, Kyriakos
name: Kokkotas, Kostas D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Analog models of black holes have unequivocally proven to be extremely beneficial in providing critical information regarding black hole spectroscopy, superradiance, quantum phenomena and most importantly Hawking radiation and black hole evaporation; topics that have either recently begun to bloom through gravitational wave observations or have not yet been investigated in astrophysical setups. Black hole analog experiments have made astonishing steps toward the aforementioned directions and are paramount in understanding the quantum nature of the gravitational field. Recently, a tabletop analog Schwarzschild black hole has been proposed by placing Bose-Einstein condensates of photons inside a mirror's cavity, leading to a sink with a radial vortex that represents a velocity singularity. Here, we provide an extensive spectral analysis of both the tabletop acoustic black hole and its higher-dimensional gravitational analog. We find that quasinormal modes and quasibound states share qualitative similarities in both systems and show that the eikonal quasinormal modes of the analog acoustic black hole have a photon-sphere-like interpretation, which points to the existence of a phonon sphere in the analog black hole. Our results, complemented with the recently calculated graybody factors and Hawking radiation of the acoustic analog, can provide a theoretical test bed for future tabletop experiments with condensates of light in a mirror's cavity and provide significant insights regarding classical and quantum phenomena in higher-dimensional black holes.
description: 13 pages, 5 figures, 1 Appendix, published version
Intentional Dynamics in TESOL: An Ecological Perspective
Creators: name: Stelma, Juup
name: Onat-Stelma, Zeynep
name: Lee, Woojoo
name: Kostoulas, Achilleas
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: This paper presents an ecological perspective on meaning-making, conceptualised as developing intentionality and exemplified with reference to three international TESOL settings. The paper draws on philosophical and folk-psychological perspectives on intentionality, including Searle’s (1983) distinction between intrinsic (individual) and derived (social) forms of intentionality and Young, DePalma and Garrett’s (2002) modelling of intentional dynamics in educational settings. The paper illustrates the analytical affordances of the perspective through sample analyses of intentional dynamics found in three international TESOL settings. This includes: (i) young learners’ interpretations of love and marriage in a joint writing task in a Norwegian primary L2 classroom, (ii) a Turkish teacher’s first experience of teaching English to young learners, and (iii) the impact of the English as the global language phenomenon on the teaching of English to young learners in South Korea. The paper concludes that explorations of intentional dynamics on different levels of language education activities can enhance our ecological understanding of the cognitive, social and political dimensions of TESOL.
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 1 (2015)
Invoking Membership Categories Through Marked Person Reference Forms in Parent-Child Interaction
Creators: name: Ling, Ruey-Ying
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2015

description: Based on video-recordings and transcripts from parent-child conversations, this paper examines how marked person references can be designed to invoke relevant membership categories. Through detailed analyses guided by the principles of Conversation Analysis and Membership Categorization Analysis, I show that categories invoked through marked person references allow speakers to account for and upgrade the social actions they are performing. Findings of this study contribute to research on person reference and membership categorization, and in particular, the crossover between the two. They also provide insights into how parents employ language practices as a resource for socializing children into their family roles.
description: Studies in Applied Linguistics and TESOL, Vol. 15 No. 1 (2015)
Profile of bubbling solutions to a Liouville system
Creators: name: Lin, Chang-shou
name: Zhang, Lei
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 35J60, 35J55

description: In several fields of Physics, Chemistry and Ecology, some models are described by Liouville systems. In this article we first prove a uniqueness result for a Liouville system in $\mathbb R^2$. Then we establish an uniform estimate for bubbling solutions of a locally defined Liouville system near an isolated blowup point. The uniqueness result, as well as the local uniform estimates are crucial ingredients for obtaining a priori estimate, degree counting formulas and existence results for Liouville systems defined on Riemann surfaces.
description: 32 pages
Vascular Deformation Mapping for CT Surveillance of Thoracic Aortic Aneurysm Growth
Creators: name: Burris, Nicholas
name: Bian, Zhangxing
name: Dominic, Jeffrey
name: Zhong, Jiayang
name: Van Bakel, Diederik
name: Houben, Ignas
name: Patel, Himanshu
name: Ross, Brian
name: Christensen, Gary
name: Hatt, Charles
Publisher: name: My University
Year: 2021
Subjects: subject: Radiology
subject: Health Sciences

description: Background: Aortic diameter measurements in patients with thoracic aortic aneurysm (TAA) suffer from significant measurement variability and are unable to quantify aortic growth in a comprehensive, three-dimensional manner. Purpose: To develop and validate a technique for quantification of 3D growth based on deformable image registration in a cohort of patients with thoracic aortic aneurysm (TAA). Materials & Methods: We retrospectively identified a cohort of 50 patients with ascending and descending TAA with ≥2 computed tomography angiography (CTA) studies between 2006-2020; 12 patients were excluded yielding 38 patients (68 surveillance intervals) for analysis. 3D aortic growth was quantified using Vascular Deformation Mapping (VDM), a technique that uses deformable image registration to warp an aortic mesh constructed from baseline anatomy, with growth quantified as the ratio of change in surface area at each triangular mesh element (Area Ratio). Manual segmentations were performed by independent raters to assess inter-rater reproducibility. Registration error was assessed using manually placed landmarks. Agreement between VDM and diameter measurements was assess using Pearson’s correlation and Cohen’s kappa. Results: Average age was 69.0 ± 9.3 years, and the majority were female (n=21, 55%) with aneurysm of the ascending aorta (n=26, 69%). VDM was technically successful in 35/38 (89%) patients and 58/68 intervals (85%). Median registration error was 0.77 mm (IQR: 0.54-1.10 mm). Inter-rater agreement was high for aortic segmentation (Dice= 0.97 ± 0.02) and VDM-derived Area Ratio (bias= 0.0, limits of agreement: -0.03 to 0.03). There was strong agreement (r=0.85, p<0.001) between peak Area Ratio values and diameter change. VDM detected areas of growth outside of the maximally dilated segment in 6/14 (36%) patients with growth, none of which were detected by diameter assessment. Conclusion: VDM is a novel technique for reliable and comprehensive quantitative assessment of 3D aortic growth and growth patterns in TAA patients undergoing imaging surveillance.
Developing and testing a genetic monitoring tool for American pikas (Ochotona princeps) to investigate spatial and temporal genetic variation in the Canadian Rocky Mountains
Creators: name: Arpin, Kate
Publisher: name: University of British Columbia
Year: 2023

description: By monitoring population trends of indicator species, especially climate sentinel species, we may improve our understanding of the ecological responses to environmental change. Genetic tools for wildlife monitoring can provide particularly valuable information on spatiotemporal population trends and connectivity; however, many DNA sequencing approaches are dependent on the high quality and quantity of DNA acquired from traditional sample sources. Rapid genotyping tools such as Genotyping-in-Thousands by sequencing (GT-seq) have recently demonstrated high efficacy with lower quality DNA from non-invasive and archival samples, facilitating broad-scale spatial and temporal research with minimal disturbance to the studied system. We developed a multi-purpose GT-seq panel of 307 single nucleotide polymorphisms for a climate sentinel mammal (the American pika, Ochotona princeps) for use as a genetic monitoring tool in the Canadian Rocky Mountains. We first optimized the panel using contemporary tissue samples (n=77) and subsequently applied it to archival tissue (n=17) and contemporary fecal pellet samples (n=129) to evaluate its effectiveness at identifying individuals and sex, estimating relatedness, and inferring population structure. We subsequently compared estimates of putatively neutral and putatively adaptive genetic variation between the archival tissue samples and both paired-site contemporary fecal pellet samples (n=25) and unpaired-site contemporary tissue samples (n=33) to assess temporal genetic variation in relation to a changing climate. The panel demonstrated high efficacy with contemporary and archival tissue samples (94.7% and 90.5% genotyping success, respectively) and negligible genotyping error (0.001% and 0.0%, respectively). Despite relatively high genotyping success for fecal pellet samples (79.7%), high genotyping error (28.4%) limited its power as a monitoring tool to assess genetic variation using non-invasive samples, highlighting the need for further optimization around sample and data collection. We found preliminary evidence of a slight loss of genetic variation between archival and contemporary tissue samples at unpaired sites; though this could be indicative of a historical population decline, further work is needed to assess and reduce the impact of spatial variation in this comparison. Overall, these findings contribute to genetic monitoring efforts of an alpine indicator species, which can ultimately help improve our understanding of the ecological consequences of rapid environmental change.
Homogenization of composites with interfacial debonding using duality-based solver and micromechanics
Creators: name: Gruber, P.
name: Zeman, J.
name: Kruis, J.
name: Sejnoha, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: One of the key aspects governing the mechanical performance of composite materials is debonding: the local separation of reinforcing constituents from matrix when the interfacial strength is exceeded. In this contribution, two strategies to estimate the overall response of particulate composites with rigid-brittle interfaces are investigated. The first approach is based on a detailed numerical representation of a composite microstructure. The resulting problem is discretized using the Finite Element Tearing and Interconnecting method, which, apart from computational efficiency, allows for an accurate representation of interfacial tractions as well as mutual inter-phase contact conditions. The candidate solver employs the assumption of uniform fields within the composite estimated using the Mori-Tanaka method. A set of representative numerical examples is presented to assess the added value of the detailed numerical model over the simplified micromechanics approach.
description: accepted for publication in Computer Assisted Mechanics and Engineering Sciences
Steady-state superradiance with alkaline earth atoms
Creators: name: Meiser, D.
name: Holland, M. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Earth-alkaline-like atoms with ultra-narrow transitions open the door to a new regime of cavity quantum electrodynamics. That regime is characterized by a critical photon number that is many orders of magnitude smaller than what can be achieved in conventional systems. We show that it is possible to achieve superradiance in steady state with such systems. We discuss the basic underlying mechanisms as well as the key experimental requirements
description: 5 pages, 3 figures
“Connection to culture is like a massive lifeline”: Yarning to further understand Young, Urban Aboriginal Perspectives and Experiences of Culture and Social and Emotional Wellbeing
Creators: name: Murrup-Stewart, Cammi
Publisher: name: Monash University
Year: 2021
Subjects: classificationCode: 450407
subject: Aboriginal and Torres Strait Islander health policy
classificationCode: 450520
subject: Aboriginal and Torres Strait Islander political participation and representation
classificationCode: 450522
subject: Aboriginal and Torres Strait Islander social impact and program evaluation
classificationCode: 450499
subject: Aboriginal and Torres Strait Islander health and wellbeing not elsewhere classified
classificationCode: 520103
subject: Forensic psychology
classificationCode: 520503
subject: Personality and individual differences
classificationCode: 520505
subject: Social psychology
classificationCode: 450606
subject: Aboriginal and Torres Strait Islander information and knowledge management systems

description: This research employed an Indigenous Research Paradigm to further understand Aboriginal perspectives of social and emotional wellbeing. A literature review gave insight into Aboriginal perceptions of social and emotional wellbeing programs and their associated success and failure factors. A subsequent Yarning study with urban Aboriginal youth found ongoing settler-colonialism created disconnections negatively impacting youth wellbeing. Conversely, engaging with Aboriginal cultural events and activities generated connections and positive wellbeing. Young people shared their strategies for cultural connection and made recommendations including more inclusive education systems, greater opportunities for handing down culture and not blaming Indigenous people for settler-colonial impacts.
On-sky wide field adaptive optics correction using multiple laser guide stars at the MMT
Creators: name: Baranec, Christoph
name: Hart, Michael
name: Milton, N. Mark
name: Stalcup, Thomas
name: Powell, Keith
name: Snyder, Miguel
name: Vaitheeswaran, Vidhya
name: McCarthy, Don
name: Kulesa, Craig
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe results from the first astronomical adaptive optics system to use multiple laser guide stars, located at the 6.5-m MMT telescope in Arizona. Its initial operational mode, ground-layer adaptive optics (GLAO), provides uniform stellar wavefront correction within the 2 arc minute diameter laser beacon constellation, reducing the stellar image widths by as much as 53%, from 0.70 to 0.33 arc seconds at lambda = 2.14 microns. GLAO is achieved by applying a correction to the telescope's adaptive secondary mirror that is an average of wavefront measurements from five laser beacons supplemented with image motion from a faint stellar source. Optimization of the adaptive optics system in subsequent commissioning runs will further improve correction performance where it is predicted to deliver 0.1 to 0.2 arc second resolution in the near-infrared during a majority of seeing conditions.
description: 13 pages, 1 table, 7 figures. Accepted for publication in Astrophysical Journal. Expected March 2009
Readers' Credits for Volume 14, Issue 2
Creators: name: Seong, Yuna
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2014

description: Teachers College, Columbia University Working Papers in TESOL & Applied Linguistics would like to thank the following individuals for reviewing the contributions for Volume 14, Issue 2 (2014).
description: Studies in Applied Linguistics and TESOL, Vol. 14 No. 2 (2014)
Optimising Boltzmann codes for the Planck era
Creators: name: Hamann, Jan
name: Balbi, Amedeo
name: Lesgourgues, Julien
name: Quercellini, Claudia
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: High precision measurements of the Cosmic Microwave Background (CMB) anisotropies, as can be expected from the Planck satellite, will require high-accuracy theoretical predictions as well. One possible source of theoretical uncertainty is the numerical error in the output of the Boltzmann codes used to calculate angular power spectra. In this work, we carry out an extensive study of the numerical accuracy of the public Boltzmann code CAMB, and identify a set of parameters which determine the error of its output. We show that at the current default settings, the cosmological parameters extracted from data of future experiments like Planck can be biased by several tenths of a standard deviation for the six parameters of the standard Lambda-CDM model, and potentially more seriously for extended models. We perform an optimisation procedure that leads the code to achieve sufficient precision while at the same time keeping the computation time within reasonable limits. Our conclusion is that the contribution of numerical errors to the theoretical uncertainty of model predictions is well under control -- the main challenges for more accurate calculations of CMB spectra will be of an astrophysical nature instead.
description: 13 pages, 4 figures