cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: The influence of teaching strategies and behaviours in the EFL classroom on student motivation and anxiety
Creators: name: Walker, Miranda Jane
Publisher: name: The Open University
Year: 2016

description: Although the research area of motivation and anxiety in language learning has experienced a surge in the last two decades, the relationship between teacher use of motivational strategies and behaviours, and student motivation and anxiety from the perspective of both teachers and students is under-researched. This longitudinal study, with two interventions four months apart, investigated the influence of teaching strategies and behaviours in the English as a Foreign Language (EFL) classroom on student motivation and anxiety in senior high schools in Limassol (Cyprus). It aimed to establish (1) which teaching strategies and behaviours students find motivating (2) which teaching strategies and behaviours positively influence student motivation and (3) which teaching strategies and behaviours negatively affect FL classroom anxiety. Using a case-study approach with both qualitative and quantitative data and a range of analytical and interpretative methods, this study primarily utilised tailor-made questionnaires and bottom-up interpretive methods of qualitative data. Quantitative data from questionnaires were analysed using the statistical software programme SPSS 21 to produce both descriptive and inferential statistics. Thematic analysis was used to analyse further qualitative data from focus groups and interviews. Consulting both learners and teachers using a mixed methods approach, permitted triangulation of data from different perspectives, which together worked to enhance the integrity and credibility of the results. Results showed that respect, support, awareness of students' needs and validation of progress and achievement were associated with increased motivation throughout the year. Unclear instructions and negative feedback were among factors associated with foreign language anxiety (FLA). The findings provide important resources for teachers and researchers in the field to build on in their own educational settings, and have relevance for other foreign language classrooms in similar cultural settings.
Exchange and correlation effects in the relaxation of hot electrons in noble metals
Creators: name: Gurtubay, I. G.
name: Pitarke, J. M.
name: Echenique, P. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report extensive first-principles calculations of the inelastic lifetime of low-energy electrons in the noble metals Cu, Ag, and Au. The quasiparticle self-energy is computed with full inclusion of exchange and correlation (xc) effects, in the framework of the GWΓapproximation of many-body theory. Although exchange and correlation may considerably reduce both the screening and the bare interaction of hot electrons with the Fermi gas, these corrections have opposite signs. Our results indicate that the overall effect of short-range xc is small and GWΓlinewidths are close to their xc-free G^0W^0 counterparts, as occurs in the case of a free-electron gas.
description: 9 pages, 8 figures. To appear in Phys. Rev. B
Model Independent Analysis of Supernova Data, Dark Energy, Trans-Planckian Censorship and the Swampland
Creators: name: Heisenberg, Lavinia
name: Bartelmann, Matthias
name: Brandenberger, Robert
name: Refregier, Alexandre
Publisher: name: arXiv
Year: 2020
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: In this Letter, we consider the model-independent reconstruction of the expansion and growth functions from the Pantheon supernova data. The method relies on developing the expansion function in terms of shifted Chebyshev polynomials and determining the coefficients of the polynomials by a maximum-likelihood fit to the data. Having obtained the expansion function in a model-independent way, we can then also determine the growth function without assuming a particular model. We then compare the results with the predictions of two classes of Dark Energy models, firstly a class of quintessence scalar field models consistent with the trans-Planckian censorship and swampland conjectures, and secondly a class of generalized Proca vector field models. We determine constraints on the parameters which appear in these models.
description: 11 pages, 6 figures
Biased Hypothesis Formation From Projection Pursuit
Creators: name: Patterson, John
name: Avery, Chris
name: Grear, Tyler
name: Jacobs, Donald J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The effect of bias on hypothesis formation is characterized for an automated data-driven projection pursuit neural network to extract and select features for binary classification of data streams. This intelligent exploratory process partitions a complete vector state space into disjoint subspaces to create working hypotheses quantified by similarities and differences observed between two groups of labeled data streams. Data streams are typically time sequenced, and may exhibit complex spatio-temporal patterns. For example, given atomic trajectories from molecular dynamics simulation, the machine's task is to quantify dynamical mechanisms that promote function by comparing protein mutants, some known to function while others are nonfunctional. Utilizing synthetic two-dimensional molecules that mimic the dynamics of functional and nonfunctional proteins, biases are identified and controlled in both the machine learning model and selected training data under different contexts. The refinement of a working hypothesis converges to a statistically robust multivariate perception of the data based on a context-dependent perspective. Including diverse perspectives during data exploration enhances interpretability of the multivariate characterization of similarities and differences.
description: 12 pages, 5 figures
Livro de Relatórios do Curso de Campo ECMVS 2023
Creators: name: Ribeiro de Castro Solar, Ricardo
name: Neves, Frederico
Publisher: name: Zenodo
Year: 2023

description: Este livro contém os relatórios dos projetos de pesquisa científica realizados pelos alunos, sob orientação dos coordenadores, professores e tutores, no Curso de Campo ECMVS/UFMG, edição 2023. O objetivo desses projetos foi treinar os alunos em história natural, teoria ecológica, método científico, planejamento e execução de projetos, técnicas de campo para estudar diferentes táxons, análise e interpretação de dados e comunicação científica. Portanto, mesmo que possam ser interessantes para inspirar projetos mais aprofundados no futuro, os resultados relatados aqui, assim como as interpretações deles, não são conclusivos. Logo, as informações contidas neste livro devem ser interpretadas com cautela, não devendo ser usadas diretamente para tomada de decisões sobre questões acadêmicas e ambientais, sem que antes os editores deste livro sejam consultados.
Rice Diseases Detection and Classification Using Attention Based Neural Network and Bayesian Optimization
Creators: name: Wang, Yibin
name: Wang, Haifeng
name: Peng, Zhaohua
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this research, an attention-based depthwise separable neural network with Bayesian optimization (ADSNN-BO) is proposed to detect and classify rice disease from rice leaf images. Rice diseases frequently result in 20 to 40 \% corp production loss in yield and is highly related to the global economy. Rapid disease identification is critical to plan treatment promptly and reduce the corp losses. Rice disease diagnosis is still mainly performed manually. To achieve AI assisted rapid and accurate disease detection, we proposed the ADSNN-BO model based on MobileNet structure and augmented attention mechanism. Moreover, Bayesian optimization method is applied to tune hyper-parameters of the model. Cross-validated classification experiments are conducted based on a public rice disease dataset with four categories in total. The experimental results demonstrate that our mobile compatible ADSNN-BO model achieves a test accuracy of 94.65\%, which outperforms all of the state-of-the-art models tested. To check the interpretability of our proposed model, feature analysis including activation map and filters visualization approach are also conducted. Results show that our proposed attention-based mechanism can more effectively guide the ADSNN-BO model to learn informative features. The outcome of this research will promote the implementation of artificial intelligence for fast plant disease diagnosis and control in the agricultural field.
Hyperstates of Involutive MTL-Algebras that Satisfy $(2x)^2 = 2(x^2)$
Creators: name: Flaminio, Tommaso
name: Ugolini, Sara
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: States of MV-algebras have been the object of intensive study and attempts of generalizations. The aim of this contribution is to provide a preliminary investigation for states of prelinear semihoops and hyperstates of algebras in the variety generated by perfect and involutive MTL-algebras (IBP0-algebras for short). Grounding on a recent result showing that IBP0-algebras can be constructed from a Boolean algebra, a prelinear semihoop and a suitably defined operator between them, our first investigation on states of prelinear semihoops will support and justify the notion of hyperstate for IBP0- algebras and will actually show that each such map can be represented by a probability measure on its Boolean skeleton, and a state on a suitably defined abelian l-group.
description: 12 pages
Effect of annealing on magnetic and magnetotransport properties of Ga1-xMnxAs epilayers
Creators: name: Kuryliszyn-Kudelska, I.
name: Wojtowicz, T.
name: Liu, X.
name: Furdyna, J. K.
name: Dobrowolski, W.
name: Domagala, J. Z.
name: Lusakowska, E.
name: Goiran, M.
name: Haanappel, E.
name: Portugall, O.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: High-field magnetic measurements performed with the use of magnetooptical Kerr effect (MOKE) in the polar configuration as well as high-field and low-field magnetotransport studies were carried out on Ga1-xMnxAs epilayers grown by low temperature molecular beam epitaxy, and subsequently annealed under various conditions. The structural investigations by means of high resolution XRD were also performed. We observe significant changes in magnetoresistivity curves, magnetization and strain introduced by the annealing.
description: International Conference on Magnetism, ICM 2003, Roma; to be published on Journal of Magnetism and Magnetic Materials
Livro de Relatórios do Curso de Campo ECMVS 2023
Creators: name: Ribeiro de Castro Solar, Ricardo
Publisher: name: Zenodo
Year: 2024

description: Este livro contém os relatórios dos projetos de pesquisa científica realizados pelos alunos, sob orientação dos coordenadores, professores e tutores, no Curso de Campo ECMVS/UFMG, edição 2023. O objetivo desses projetos foi treinar os alunos em história natural, teoria ecológica, método científico, planejamento e execução de projetos, técnicas de campo para estudar diferentes táxons, análise e interpretação de dados e comunicação científica. Portanto, mesmo que possam ser interessantes para inspirar projetos mais aprofundados no futuro, os resultados relatados aqui, assim como as interpretações deles, não são conclusivos. Logo, as informações contidas neste livro devem ser interpretadas com cautela, não devendo ser usadas diretamente para tomada de decisões sobre questões acadêmicas e ambientais, sem que antes os editores deste livro sejam consultados.
The response of Bose-Einstein condensates to external perturbations at finite temperature
Creators: name: Morgan, S. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We present a theory of the linear response of a Bose-condensed gas to external perturbations at finite temperature. The theory developed here is the basis of a recent quantitative explanation of the measurements of condensate excitations and decay rates made at JILA [D. S. Jin et al., Phys. Rev. Lett. 78, 764 (1997)]. The formalism is based on a dynamic, number-conserving, mean-field scheme and is valid in the collisionless limit of well-defined quasiparticles. The theory is gapless, consistent with the generalized Kohn theorem for the dipole modes, and includes the time-dependent normal and anomalous averages, Beliaev and Landau processes, and all relevant finite size effects. The important physical process where the thermal cloud is driven directly by the external perturbation is explicitly included. This is required for consistency with the dipole modes and is also needed to explain the JILA observations.
description: 26 pages, revtex4, uses amsmath and amssymb
Science teachers’ use of argumentation instructional model: linking PCK of argumentation, epistemological beliefs, and practice
Creators: name: Ozden Sengul
name: Enderle, Patrick James
name: Schwartz, Renee S.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Neuroscience
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: This study aimed to explore the relationship between science teachers’ pedagogical content knowledge (PCK) of argumentation, epistemological beliefs, and classroom practices. Participants were three urban science teachers who were selected among 12 teachers from a professional development (PD) program focusing on Argument-Driven Inquiry (ADI) instructional model. These three teachers completed PCK of argumentation assessments; they were observed while implementing the argumentation investigations and reflected on and interviewed about their teaching experiences after each enactment and at the end of the study. The findings illustrate that these teachers experience positive shifts in their PCK of argumentation; a teacher with evaluativist epistemological beliefs has high-quality PCK of argumentation, which is reflected in her teaching practices aligning with the expectations of the ADI model. However, if teachers’ epistemology included multiplist elements, they modify the ADI investigations even though they have improved their PCK of argumentation. This finding addresses how teachers’ epistemological beliefs are connected to their teaching actions. The results show that different aspects of epistemological beliefs and PCK of argumentation are linked to teachers’ use of argumentation investigations. The paper discusses the implications for science education and future research.
On Carbon Nanotubes in the Interstellar Medium
Creators: name: Li, Qi
name: Li, Aigen
name: Jiang, B. W.
name: Chen, Tao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Since their discovery in 1991, carbon nanotubes (CNTs) -- a novel one-dimensional carbon allotrope -- have attracted considerable interest worldwide because of their potential technological applications such as electric and optical devices. In the astrophysical context, CNTs may be present in the interstellar space since many of the other allotropes of carbon (e.g., amorphous carbon, fullerenes, nanodiamonds, graphite, polycyclic aromatic hydrocarbons, and possibly graphene as well) are known to be widespread in the Universe, as revealed by presolar grains in carbonaceous primitive meteorites and/or by their fingerprint spectral features in astronomical spectra. In addition, there are also experimental and theoretical pathways to the formation of CNTs in the interstellar medium (ISM). In this work, we examine their possible presence in the ISM by comparing the observed interstellar extinction curve with the ultraviolet/optical absorption spectra experimentally obtained for single-walled CNTs of a wide range of diameters and chiralities. Based on the absence in the interstellar extinction curve of the ~4.5 and 5.25 eV $π$-plasmon absorption bands which are pronounced in the experimental spectra of CNTs, we place an upper limit of ~10 ppm of C/H (i.e., ~4% of the total interstellar C) on the interstellar CNT abundance.
description: 7 pages, 2 figures; accepted for publication in MNRAS
Williams Lake Flooring Business Plan
Creators: name: Klein, Krista
name: Li, Sunny
name: Niroomand, Maryam
name: Sellars, Sally
name: Waldstein, Will
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Article I (English)_Liko_Brikena (original version included).pdf
Creators: name: Liko, Brikena
Publisher: name: figshare
Year: 2020
Subjects: subject: Linguistics
subject: FOS: Languages and literature

description: In this paper, which treats a topic from the syntax of the Albanian language, it is aimed towards a discussion of the features and the argument structure of some Albanian verbs, which, in order to complete their valencies, can take as arguments complement phrases or inflectional phrases with clausal value. The purpose of this paper is to highlight the common characteristics of these verbs in Albanian, based on the corpus under consideration, and to distinguish them from other verbs that do not accept as arguments phrases with clausal value, and furthermore to consider some cases where the same verb presents different argument structures.
Magnetoelectric boundary simulated by a Chern-Simons-like model
Creators: name: Oliveira, H. L.
name: Borges, L. H. C.
name: Barone, F. E.
name: Barone, F. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this work we study some physical phenomena that emerge in the vicinity of a magnetoelectric boundary. For simplicity, we restrict to the case of a planar boundary described by a coupling between the gauge field with a planar external Chern-Simons-like potential. The results are obtained exactly. We compute the correction undergone by the photon propagator due to the presence of the Chern-Simons coupling and we investigate the interaction between a stationary point-like charge and the magnetoelectric boundary. In the limit of a perfect mirror, where the coupling constant between the field and the potential diverges, we recover the image method. For a non perfect mirror, we show that we have an attenuated image charge and, in addition, an image magnetic monopole whose field strength does not exhibit the presence of the undesirable and artificial divergences introduced by Dirac strings. We also study the interaction between the plate and a quantum particle with spin. In this case we have a kind of charge-magnetic dipole interaction due to the magnetoelectric properties of the plate.
description: 3 figures, 13 latex pages
Weak localization corrections to the thermal conductivity in $s$-wave superconductors
Creators: name: Rosado, Lucia Gonzalez
name: Hassler, Fabian
name: Catelani, Gianluigi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the thermal conductivity in disordered $s$-wave superconductors. Expanding on previous works for normal metals, we develop a formalism that tackles particle diffusion as well as the weak localization (WL) and weak anti-localization (WAL) effects. Using a Green's functions diagrammatic technique, which takes into account the superconducting nature of the system by working in Nambu space, we identify the system's low-energy modes, the diffuson and the Cooperon. The time scales that characterize the diffusive regime are energy dependent; this is in contrast with the the normal state, where the relevant time scale is the mean free time $τ_e$, independent of energy. The energy dependence introduces a novel energy scale $\varepsilon_*$, which in disordered superconductors ($τ_e Δ\ll 1$, with $Δ$ the gap) is given by $\varepsilon_* = \sqrt{Δ/τ_e}$. From the diffusive behavior of the low-energy modes, we obtain the WL correction to the thermal conductivity. We give explicitly expressions in two dimensions. We determine the regimes in which the correction depends explicitly on $\varepsilon_*$ and propose an optimal regime to verify our results in an experiment.
description: 15 pages, 6 figures
Investor behavior over the rise and fall of Nasdaq
Creators: name: Griffin, John M.
name: Harris, Jeffrey
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 35
subject: Commerce, management, tourism and services
classificationCode: 3502
subject: Banking, finance and investment

description: The large theoretical literature about bubbles includes models where naïve individuals cause excessive price movements and smart money trades against (and potentially eliminates) a bubble or where sophisticated investors follow market prices and help drive a bubble. We examine these competing views by focusing on investor activity over the spectacular rise and fall of Nasdaq from September 1999 through 2001. We find that both institutional ownership levels and volume on Nasdaq were high. Institutions bought shares from individuals the day after market up-moves and institutions sold on net following market dips. These patterns are pervasive throughout the market run-up and subsequent crash period. This short-term institutional trend-chasing behavior does not appear to be mechanically induced by flows into and out of mutual funds. Our evidence supports the view that institutions contributed more than individuals to the Nasdaq rise and fall.
The dependent scattering effect on radiative properties of micro/nanoscale discrete disordered media
Creators: name: Wang, B. X.
name: Zhao, C. Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The dependent scattering effect (DSE), which arises from the wave nature of electromagnetic radiation, is a critical mechanism affecting the radiative properties of micro/nanoscale discrete disordered media (DDM). In the last a few decades, the approximate nature of radiative transfer equation (RTE) leads to a plethora of investigations of the DSE in various DDM, ranging from fluidized beds, photonic glass, colloidal suspensions and snow packs, etc. In this article, we give a general overview on the theoretical, numerical and experimental methods and progresses in the study of the DSE. We first present a summary of the multiple scattering theory of electromagnetic waves, including the analytic wave theory and Foldy-Lax equations, as well as its relationship with the RTE. Then we describe in detail the physical mechanisms that are critical to DSE and relevant theoretical considerations as well as numerical modeling methods. Experimental approaches to probe the radiative properties and relevant progresses in the experimental investigations of the DSE are also discussed. In addition, we give a brief review on the studies on the DSE and other relevant interference phenomena in mesoscopic physics and atomic physics, especially the coherent backscattering cone, Anderson localization, as well as the statistics and correlations in disordered media. We expect this review can provide profound and interdisciplinary insights to the understanding and manipulation of the DSE in disordered media for thermal engineering applications.
description: Submitted to Annual Review of Heat Transfer. Comments are welcome
Investor behavior over the rise and fall of Nasdaq
Creators: name: Griffin, John M.
name: Harris, Jeffrey
Publisher: name: American University
Year: 2023

description: The large theoretical literature about bubbles includes models where naïve individuals cause excessive price movements and smart money trades against (and potentially eliminates) a bubble or where sophisticated investors follow market prices and help drive a bubble. We examine these competing views by focusing on investor activity over the spectacular rise and fall of Nasdaq from September 1999 through 2001. We find that both institutional ownership levels and volume on Nasdaq were high. Institutions bought shares from individuals the day after market up-moves and institutions sold on net following market dips. These patterns are pervasive throughout the market run-up and subsequent crash period. This short-term institutional trend-chasing behavior does not appear to be mechanically induced by flows into and out of mutual funds. Our evidence supports the view that institutions contributed more than individuals to the Nasdaq rise and fall.
Amplification of coupling for Yukawa potentials
Creators: name: De Leo, S.
name: Rotelli, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is well known that Yukawa potentials permit bound states in the Schrodinger equation only if the ratio of the exchanged mass to bound mass is below a critical multiple of the coupling constant. However, arguments suggested by the Darwin term imply a more complex situation. By numerically studying the Dirac equation with a Yukawa potential we investigate this amplification effect.
description: 7 pages, 2 figures
Shallow transit follow-up from NGTS: simultaneous observations of HD106315 with 11 identical telescopes
Creators: name: Smith, Alexis M. S.
name: Eigmüller, Philipp
name: Gurumoorthy, Ramanathan
name: Csizmadia, Szilárd
name: Bayliss, Daniel
name: Burleigh, Matthew R.
name: Cabrera, Juan
name: Casewell, Sarah L.
name: Erikson, Anders
name: Goad, Michael R.
name: Grange, Andrew
name: Jenkins, James S.
name: Pollacco, Don
name: Rauer, Heike
name: Raynard, Liam
name: Udry, Stéphane
name: West, Richard G.
name: Wheatley, Peter J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Next Generation Transit Survey (NGTS) is a photometric survey for transiting exoplanets, consisting of twelve identical 0.2-m telescopes. We report a measurement of the transit of HD106315c using a novel observing mode in which multiple NGTS telescopes observed the same target with the aim of increasing the signal-to-noise. Combining the data allows the robust detection of the transit, which has a depth less than 0.1 per cent, rivalling the performance of much larger telescopes. We demonstrate the capability of NGTS to contribute to the follow-up of K2 and TESS discoveries using this observing mode. In particular, NGTS is well-suited to the measurement of shallow transits of bright targets. This is particularly important to improve orbital ephemerides of relatively long-period planets, where only a small number of transits are observed from space.
description: 11 pages, 9 figures, 3 tables. Resubmitted to Astronomische Nachrichten following review and revision
Engaging the Next Generation: Pathways for Business Students into Public Procurement
Creators: name: PROCEDIN Project
name: University of Twente
Publisher: name: Zenodo
Year: 2024
Subjects: Public Procurement
Innovation
Career
Business
Jobs

description: This document explores how the PROCEDIN project engages business students with public procurement as a meaningful and impactful career path. It details the creation of engagement routes, from guest lectures to traineeships, aimed at attracting students to the field. The deliverable highlights the project's efforts in promoting public procurement's role in innovation and sustainability, including tailored advice notes for students, educators, and public entities. Additionally, it reviews events organised to raise awareness and foster collaboration, providing a comprehensive guide to integrating business talent into public procurement.
Trajectory tracking for non-Markovian quantum systems
Creators: name: Wu, S. L.
name: Ma, W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a systematic scheme to engineer quantum states of a quantum system governed by a time-convolutionless non-Markovian master equation. According to the idea of reverse engineering, the general algebraic equation to determine the control parameters, such as coherent and incoherent control fields, is presented. Without artificially engineering the time-dependent decay rates and retaining the environment-induced Lamb shifts, the quantum state can still be transferred into the target state in a finite period of time along an arbitrary designed trajectory strictly in Hilbert space. As an application, we apply our scheme to a driven two-level non-Markovian system and realize instantaneous-steady-state tracking and a complete population inversion with control parameters which are available in experimental settings.
description: Published version
Hund's rule Magnetism in C60 ions?
Creators: name: Lueders, Martin
name: Manini, Nicola
name: Gattari, Paolo
name: Tosatti, Erio
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the occurrence of Hund's rule magnetism in C60(n+-) molecular ions, by computing the ground-state spin for all charge states n from -3 to +5. The two competing interactions, electron-vibration (e-v, including Jahn Teller, favoring low spin) and electron-electron (e-e, including Hund-rule exchange, favoring high spin), are accounted for based on previously computed ab-initio coupling parameters. Treating the ion coordinates as classical, we first calculate and classify the static Jahn-Teller distorted states for all n, inclusive of both e-v and e-e effects. We then correct the adiabatic result by including the zero-point energy lowering associated with softening of vibrations at the adiabatic Jahn-Teller minima. Our overall result is that while, like in previous investigations, low-spin states prevail in negative ions, Hund's rule high spin dominates all positive C60(n+) ions. This suggests also that Hund-rule magnetism could arise in fullerene cation-based solid state compounds, particularly those involving C60(2+).
description: 12 pages, 2 figures, epj style
Far-field and near-field directionality in acoustic scattering
Creators: name: Wei, Lei
name: Rodríguez-Fortuño, Francisco J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Far-field directional scattering and near-field directional coupling from simple sources have recently received great attention in photonics: beyond circularly-polarized dipoles, whose directional coupling to evanescent waves was recently applied to acoustics, the near-field directionality of modes in optics includes phased combinations of electric and magnetic dipoles, such as the Janus dipole and the Huygens dipole, both of which have been experimentally implemented using high refractive index nanoparticles. In this work we extend this to acoustics: we propose the use of high acoustic index scatterers exhibiting phased combinations of acoustic monopoles and dipoles with far-field and near-field directionality. All solutions stem from the elegant acoustic angular spectrum of the acoustic source, in close analogy to electromagnetism. A Huygens acoustic source with zero backward scattering is proposed and numerically demonstrated, as well as a Janus source achieving face-selective and position-dependent evanescent coupling to nearby acoustic waveguides.
Fully Consistent Density Functional Theory Determination of the Insulator-Metal Transition Boundary in Warm Dense Hydrogen
Creators: name: Hinz, Joshua
name: Karasiev, Valentin V.
name: Hu, S. X.
name: Zaghoo, Mohamed
name: Mejía-Rodríguez, Daniel
name: Trickey, S. B.
name: Calderín, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using conceptually and procedurally consistent density functional theory (DFT) calculations with an advanced meta-GGA exchange-correlation functional in ab initio molecular dynamics simulations, we determine the insulator-metal transition (IMT) of warm dense fluid hydrogen over the pressure range 50 to 300 GPa. Inclusion of nuclear quantum effects via path-integral molecular dynamics (PIMD) sharpens the metallic transition and lowers the transition temperature relative to results from Born-Oppenheimer (BO) MD. BOMD itself gives improved agreement with experimental results compared to previous DFT predictions. Examination of the ionic pair correlation function in the context of the abrupt conductivity increase at the transition confirms a metallic transition due to the dissociation of molecular hydrogen that coincides with an abrupt band gap closure. Direct comparison of the PIMD and BOMD results clearly demonstrates an isotope effect on the IMT. Distinct from stochastic simulations, these results do not depend upon any ad hoc combination of ground-state and finite-T methodologies.
Does foreign ownership impact accounting conservatism adoption in Vietnam?
Creators: name: Le, Tuan Bach
name: Pavelkova, Drahomira
name: Do, Thi Thanh Nhan
name: Ngo, Minh Vu
name: Le, Tuan Bach
name: Pavelkova, Drahomira
name: Do, Thi Thanh Nhan
name: Ngo, Minh Vu
Publisher: name: Unknown
Year: 2017
Subjects: subject: International Relations/Trade
subject: Accounting
subject: accounting information
subject: financial reporting

description: This study investigates the effects of foreign ownership on accounting conservatism adoption in Vietnam. Although foreign ownership is found to have a positive relationship with accounting conservatism in Korea (An, 2015), there is still no general agreement on it. In this regard, the purpose of this study is to shed more light on the association between foreign ownership and accounting conservatism. Using data from Vietnamese firms listed on stock exchanges, the study finds that in contrast to the findings of An, foreign ownership is negatively associated with accounting conservatism. This result supports the transient hypothesis of foreign ownership, indicating that foreign investors with the low level of ownership do not have significant incentives to oversee managers, thus not influencing financial reporting quality.
First stars IV.CS 29497-030: Evidence for operation of the s-process at very low metallicity
Creators: name: Sivarani, T.
name: Bonifacio, P.
name: Molaro, P.
name: Cayrel, R.
name: Spite, M.
name: Spite, F.
name: Plez, B.
name: Andersen, J.
name: Barbuy, B.
name: Beers, T. C.
name: Depagne, E.
name: Hill, V.
name: Francois, P.
name: Nordstrom, B.
name: Primas, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an abundance analysis of the very metal-poor, carbon-enhanced star CS 29497-030. Our results indicate that this unusually hot turnoff star (Teff = 6650K, log g = 3.5) has a metallicity [Fe/H] = -2.8, and exhibits large overabundances of carbon ([C/Fe] = +2.38), nitrogen ([N/Fe]= +1.88), and oxygen ([O/Fe]= +1.67). This star also exhibits a large enhancement in its neutron-capture elements; the pattern follows that expected to arise from the s-process. In particular, the Pb abundance is found to be very high with respect to iron ([Pb/Fe]= +3.5), and also with respect to the second peak s-process elements (e.g., Ba, La, Ce, Nd), which fits into the newly introduced classification of lead (Pb) stars. The known spectroscopic binary status of this star, along with the observed s-process abundance pattern, suggest that it has accreted matter from a companion, which formerly was an Asymptotic Giant-Branch(AGB) star. In a preliminary analysis, we have also identified broad absorption lines of metallic species that suggest a large axial rotational velocity for this star, which may be the result of spin-up associated with the accretion of material from its previous AGB companion. In addition, this star is clearly depleted in the light element Li. When considered along with its rather high inferred temperature, these observations are consistent with the expected properties of a very low metallicity halo blue straggler.
description: A&A accepted
External Attention Assisted Multi-Phase Splenic Vascular Injury Segmentation with Limited Data
Creators: name: Zhou, Yuyin
name: Dreizin, David
name: Wang, Yan
name: Liu, Fengze
name: Shen, Wei
name: Yuille, Alan L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The spleen is one of the most commonly injured solid organs in blunt abdominal trauma. The development of automatic segmentation systems from multi-phase CT for splenic vascular injury can augment severity grading for improving clinical decision support and outcome prediction. However, accurate segmentation of splenic vascular injury is challenging for the following reasons: 1) Splenic vascular injury can be highly variant in shape, texture, size, and overall appearance; and 2) Data acquisition is a complex and expensive procedure that requires intensive efforts from both data scientists and radiologists, which makes large-scale well-annotated datasets hard to acquire in general. In light of these challenges, we hereby design a novel framework for multi-phase splenic vascular injury segmentation, especially with limited data. On the one hand, we propose to leverage external data to mine pseudo splenic masks as the spatial attention, dubbed external attention, for guiding the segmentation of splenic vascular injury. On the other hand, we develop a synthetic phase augmentation module, which builds upon generative adversarial networks, for populating the internal data by fully leveraging the relation between different phases. By jointly enforcing external attention and populating internal data representation during training, our proposed method outperforms other competing methods and substantially improves the popular DeepLab-v3+ baseline by more than 7% in terms of average DSC, which confirms its effectiveness.
description: IEEE TMI
Magnetism and half-metallicity at the O surfaces of ceramic oxides
Creators: name: Gallego, S.
name: Beltran, J. I.
name: Cerda, J.
name: Munoz, M. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The occurence of spin-polarization at ZrO$_{2}$, Al$_{2}$O$_{3}$ and MgO surfaces is proved by means of \textit{ab-initio} calculations within the density functional theory. Large spin moments, as high as 1.56 $μ_B$, develop at O-ended polar terminations, transforming the non-magnetic insulator into a half-metal. The magnetic moments mainly reside in the surface oxygen atoms and their origin is related to the existence of $2p$ holes of well-defined spin polarization at the valence band of the ionic oxide. The direct relation between magnetization and local loss of donor charge makes possible to extend the magnetization mechanism beyond surface properties.
Microphorella bira Shamshev & Grootaert 2004, new species
Creators: name: Shamshev, Igor V.
name: Grootaert, Patrick
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Microphorella
Microphorella bira

description: Microphorella bira, new species
(Figs. 31-35)
 Material examined. – Holotype - male, Indonesia, Sulawesi: Bira, beach, 970011, 19 Apr.1997, coll. P. Grootaert (RBINS).
Paratypes: 2 females, same data as in holotype. All deposited in RBINS, Brussels.
 Diagnosis. – Resembling M. papuana, new species, but smaller, legs with indistinct pattern, only male abdominal sternite 6 with large, broad process; right surstylus long, narrow.
  Description. – Male  body length 1.3-1.4 mm, wing length 1.1-1.2 mm. Head and thorax greyish pollinose, with darkgreen tinge (in some angle of view). Ocellar tubercle with 2 long anterior and 2 very short posterior ocellar bristles. Face in middle somewhat narrower than distance between posterior ocelli. Scutum with 1 postsutural supra-alar bristle. Dorsocentrals represented by 4 long bristles per row. Legs with indistinct pattern: coxae yellowish brown, fore coxa yellowish in apical part; trochanters of all legs brownish yellow; femora yellowish, with brownish tinge, more distinctly brownish dorsally; tibiae yellow; fore tarsus with tarsomeres 1-3 yellow and tarsomeres 4-5 brown, mid and hind tarsi with tarsomeres 1-2 yellow and tarsomeres 3-5 becoming gradually darker (tarsomere 5 brown). Tarsi slender (except tarsomere 5). Wing with basal section of costa bearing 1 short and 1 long bristles. Abdomen with sternite 4 bearing row of long, strong setae on each side (Figs. 31, 32); sternite 5 lacking process, with several ordinary setae, sternite 6 with large broad (viewed ventrally) process; sternite 6 and segment 7 lacking setation. Terminalia (Figs. 33-35) with right surstylus long, rather narrow. Otherwise as in M. malaysiana, new species.
 Female body length 1.3-1.4 mm, wing length 1.2-1.3 mm. Similar to male except the following characters. Palpus brown, with ordinary setulae. Legs darker, with more distinct pattern; femora largely brownish, paler apically, all tibiae and tarsomeres 1-2 of all tarsi yellowish brown. Postabdomen, including cerci, brown, as in M. malaysiana, new species (spermatheca was not studied).
 Differential diagnosis. – The new species can be distinguished from other species described here as it is given in the key.
 Etymology. – The species is named after the type locality, Bira.
 Distribution. – Indonesia, Sulawesi.
description: Published as part of Shamshev, Igor V. & Grootaert, Patrick, 2004, Descriptions Of Four New Species Of The Genus Microphorella Becker (Diptera: Empidoidea, Microphoridae, Parathalassiini) From Southeast Asia And New Guinea, With Notes On The Relationships Within The Genus, pp. 45-58 in Raffles Bulletin of Zoology 52 (1) on pages 54-55, DOI: 10.5281/zenodo.4619490
Additional file 1 of A multicentre prospective double blinded randomised controlled trial of intravenous iron (ferric Derisomaltose (FDI)) in Iron deficient but not anaemic patients with chronic kidney disease on functional status
Creators: name: Bhandari, S.
name: V. Allgar
name: A. Lamplugh
name: I. Macdougall
name: P. A. Kalra
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 1: Supplementary Table 1. Summary of change in six-minute walk test (^MWT) baseline to 1 month and 3 months. Supplementary Table 2a. Summary of Minnesota Living with Heart Failure (MHLF) Questionnaire at baseline to 1 month and 3 months. Supplementary Table 2b. Summary of Restless legs score (RLS) Questionnaire at baseline to 1 month and 3 months. Supplementary Table 3a and b. Descriptive summary of Kidney Disease Quality of Life – Short form − 13 (KDQoL-SF) mean z transformed and normalised scores Questionnaire at baseline to 1 month and 3 months for total component summary measure (Physical Health and Mental Health individually and the total overall score). Initial analysis using ANCOVA and subsequent repeated measures analysis. Supplementary Table 4. Summary of Renal Function as assessed by serum creatinine (micromole/L). eGFR (ml/min/1.73m2), Cystatin C (g/L) and urinary proteinuria (mg/mmol) were similar in both groups and there was no significant change from baseline to 1 or 3 months. uACR – urinary abbumin;creatinine ratio; uPCR = urinary protein creatinine ratio. Supplementary Table 5. Summary of mean blood pressure (BP) in mmHG and Pulse wave velocity (PWV) measures including augmentation index (AiX) at baseline, 1 month and 3 months. Supplementary Table 6. Summary of Cardiac Biomarker; N terminal pro Brain natriuretic peptide (NT Pro BNP).
Landau Level Phases in Bilayer Graphene under Pressure at Charge Neutrality
Creators: name: Green, Brett R.
name: Sofo, Jorge O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Bilayer graphene in a magnetic field hosts a variety of ordered phases built from eight Landau levels close in energy to the neutrality point. These levels are characterized by orbital $n=0,1$, valley $ξ=+,-$ and spin $σ=\uparrow,\downarrow$; their relative energies depend strongly on the Coulomb interaction, magnetic field, and interlayer bias. We treat interactions at the Hartree-Fock level, including the effects of metallic gates, layer separation, spatial extent of the $p_z$ orbitals, all Slonczewski-Weiss-McClure tight-binding parameters, and pressure. We obtain the ground state as function of the applied magnetic field, bias, and pressure. The gates, layer separation and extent of the $p_z$ orbitals weaken the Coulomb interaction at different length scales; these effects distort the phase diagram but do not change its topology. However, previously-predicted continuous transitions become discontinuous when all tight-binding parameters are included nonperturbatively. We find that pressure increases the importance of the noninteracting scale with respect to the Coulomb energy, which drives phase transitions to occur at lower fields. This brings two orbitally polarized states not yet predicted or observed into the experimentally accessible region of the phase diagram, in addition to previously-identified valley-, spin-, and partially orbitally polarized states.
description: Main paper: 27 pages, 5 figures; supplemental material: 12 pages, 3 figures
RJM Specialty Laminates: Business Plan
Creators: name: Buys, Rene
name: Craig, Jameson
name: Rocksborough-Smith, Michael
name: Vorhies, Michael
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”