cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Transport properties of a quantum wire: the role of extended time-dependent impurities
Creators: name: Makogon, D.
name: Juricic, V.
name: Smith, C. Morais
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the transport properties of a quantum wire, described by the Tomonaga-Luttinger model, in the presence of a backscattering potential provided by several extended time-dependent impurities (barriers). Employing the B\" uttiker-Landauer approach, we first consider the scattering of noninteracting electrons ($g=1$) by a rectangular-like barrier and find an exact solution for the backscattering current, as well as a perturbative solution for a weak static potential with an arbitrary shape. We then include electron-electron interactions and use the Keldysh formalism combined with the bosonization technique to study oscillating extended barriers. We show that the backscattering current off time-dependent impurities can be expressed in terms of the current for the corresponding static barrier. Then we determine the backscattering current for a static extended potential, which, in the limit of noninteracting electrons ($g=1$), coincides with the result obtained using the B\" uttiker-Landauer formalism. In particular, we find that the conductance can be increased beyond its quantized value in the whole range of repulsive interactions $0
description: 9 pages, 5 figures
Prism international
Creators: name: Prism International
Publisher: name: Vancouver : The Creative Writing Program of the University of British Columbia
Year: 2015

description: The following description is provided by the publisher:
 2007 PRISM LITERARY NON-FICTION CONTEST ISSUE
 JUDGE’S ESSAY
 Jane Silcott
 GRAND PRIZE WINNER
 “Becoming Vegetarian” by Trisha Cull
 RUNNER-UP
 “Threshold” by Kitty Hoffman
 FICTION
 “Dimensions of the Court” by Tara Goedjen
 “Mayhem” by Sheheryar Badar Sheikh
 POETRY
 “To Obtain the Perfect Answer y We Allow Anything” / “The Smaller the Length the Harder the Problem” / “The Autocorrection Function Commonly Caused Erroneous Replications: Some Rules For Implementation” by Kate Hall
 “Alpaca Facts” / “Fever” / “Mexican Wedding” by Patricia Young
 “Contemplation: Three Panels” by Karen Enns
 “The Longer Ending” by Lorna Crozier
 “Ovum” / “Generation” / “The Freshly Made Bed” by Stewart Cole
 “Surge Narrows” by Emilia Nielsen  “Research Material for Poetry on Late 20th Century Art” / Insert by Daniel Scott Tysdal
 DRAWINGS
 “He thought the extra arms would make him more productive” / “He thought the extra legs would help him go faster” / “He had heard that antlers were in vogue” by Marc Johns
Non-uniform doping across the Fermi surface of NbS$_2$ intercalates
Creators: name: Battaglia, C.
name: Cercellier, H.
name: Despont, L.
name: Monney, C.
name: Prester, M.
name: Berger, H.
name: Forro, L.
name: Garnier, M. G.
name: Aebi, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic ordering of the first row transition metal intercalates of NbS$_2$ due to coupling between the conduction electrons and the intercalated ions has been explained in terms of Fermi surface nesting. We use angle-resolved photoelectron spectroscopy to investigate the Fermi surface topology and the valence band structure of the quasi-two-dimensional layer compounds Mn$_{1/3}$NbS$_2$ and Ni$_{1/3}$NbS$_2$. Charge transfer from the intercalant species to the host layer leads to non-uniform, pocket selective doping of the Fermi surface. The implication of our results on the nesting properties are discussed.
Constants of motion for fractional action-like variational problems
Creators: name: Frederico, Gastao S. F.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 49K05; 49S05; 70H33

description: We extend Noether's symmetry theorem to the fractional Riemann-Liouville integral functionals of the calculus of variations recently introduced by El-Nabulsi.
Observation of Coherent Spin Waves in a Three-Dimensional Artificial Spin Ice Structure
Creators: name: Sahoo, Sourav
name: May, Andrew
name: Berg, Arjen van Den
name: Mondal, Amrit Kumar
name: Ladak, Sam
name: Barman, Anjan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Harnessing high-frequency spin dynamics in three-dimensional (3D) nanostructures may lead to paradigm-shifting, next generation devices including high density spintronics and neuromorphic systems. Despite remarkable progress in fabrication, the measurement and interpretation of spin dynamics in complex 3D structures remain exceptionally challenging. Here we take a first step and measure coherent spin waves within a 3D artificial spin ice (ASI) structure using Brillouin light scattering. The 3D-ASI was fabricated by using a combination of two-photon lithography and thermal evaporation. Two spin-wave modes were observed in the experiment whose frequencies showed a monotonic variation with the applied field strength. Numerical simulations qualitatively reproduced the observed modes. The simulated mode profiles revealed the collective nature of the modes extending throughout the complex network of nanowires while showing spatial quantization with varying mode quantization numbers. The study shows a well-defined means to explore high-frequency spin dynamics in complex 3D spintronic and magnonic structures.
TOI-942b: A Prograde Neptune in a ~60 Myr old Multi-transiting System
Creators: name: Wirth, Christopher P.
name: Zhou, George
name: Quinn, Samuel N.
name: Mann, Andrew W.
name: Bouma, Luke G.
name: Latham, David W.
name: Teske, Johanna K.
name: Wang, Sharon X.
name: Shectman, Stephen A.
name: Butler, R. P.
name: Crane, Jeffrey D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Mapping the orbital obliquity distribution of young planets is one avenue towards understanding mechanisms that sculpt the architectures of planetary systems. TOI-942 is a young field star, with an age of ~60 Myr, hosting a planetary system consisting of two transiting Neptune-sized planets in 4.3- and 10.1-day period orbits. We observed the spectroscopic transits of the inner Neptune TOI-942b to determine its projected orbital obliquity angle. Through two partial transits, we find the planet to be in a prograde orbit, with a projected obliquity angle of |lambda| = 1/+41-33 deg. In addition, incorporating the light curve and the stellar rotation period, we find the true three-dimensional obliquity to be 2/+27-23 deg. We explored various sources of uncertainties specific to the spectroscopic transits of planets around young active stars, and showed that our reported obliquity uncertainty fully encompassed these effects. TOI-942b is one of the youngest planets to have its obliquity characterized, and one of even fewer residing in a multi-planet system. The prograde orbital geometry of TOI-942b is in line with systems of similar ages, none of which have yet been identified to be in strongly misaligned orbits.
description: Accepted by ApJL, 10 pages, 5 figures
Chirped chiral solitons in nonlinear Schrödinger equation with self-steepening and self-frequency shift
Creators: name: Vyas, Vivek M.
name: Patel, Pankaj
name: Panigrahi, Prasanta K.
name: Kumar, Choragudi Nagaraj
name: Greiner, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We find exact solutions to nonlinear Schrödinger equation in the presence of self-steepening and self-frequency shift. These include periodic solutions and localized solutions of dark-bright type which can be {\emph{chiral}}, and chirality being controlled by sign of self steepening term. A new form of self phase modulation, which can be tuned by higher order nonlinearities as also by the initial conditions, distinct from nonlinear Schrödinger equation, characterizes these solutions. In certain nontrivial parameter domain solutions are found to satisfy {\emph{linear}} Schrödinger equation, indicating possiblity of linear superposition in this nonlinear system. Dark and bright solitons exist in both anomalous and normal dispersion regimes and a duality between dark-bright type of solution and kinematic-higher order chirping is also seen. Localized kink solutions similar to NLSE solitons, but with very different self phase modulation, are identified.
description: 4 pages, ReVTeX format with two figures
Remote vibrometry recognition of nonlinear eigen-states for object coverage of randomly large size
Creators: name: Kobold, Michael C.
name: McKinley, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: For objects of "large" vibration size such as waves on the sea surface, the choice of measurement method can create different understandings of system behavior. In one case, laser vibrometry measurements of a vibrating bar in a controlled laboratory setting, variation in probe spot size can omit or uncover crucial structural vibration mode coupling data. In another case, a finite element simulation of laser vibrometry measures a nonlinearly clattering armor plate system of a ground vehicle. The simulation shows that sensing the system dynamics simultaneously over the entire structure reveals more vibration data than point measurements using a small diameter laser beam spot, regardless of the variation of footprint (coverage) boundaries. Furthermore, a simulation method described herein allows calculation of transition probabilities between modes (change-of-state). Wideband results of both cases demonstrate the 1/$f$ trend explained within -- that the energy of discrete structural vibration modes tends to decrease with increasing mode number (and frequency), and why. These results quantify the use of less expensive non-imaging classification systems for vehicle identification using the remote sensing of surface vibrations \emph{while mitigating spectral response distortion due to coverage variation on the order of the structural wavelength} (spectral reduction or elimination).
description: 24 pages, 10 figures, and 6 tables. "For associated video wave file see http://www.delphi.web.runbox.net/almostSynch.wmv" "For associated graphical abstract see http://http://www.delphi.web.runbox.net/graphicalAbstract20501remoteNonlinVib02ap20.png" "The full publication is available at https://doi.org/10.21595/jve.2019.20501". arXiv admin note: text overlap with arXiv:1711.04217
Network analysis of PGD, PTSD and insomnia symptoms in Chinese shidu parents with PGD
Creators: name: Xu, Xin
name: Xie, Tong
name: Zhou, Ningning
name: Shi, Guangyuan
name: Wen, Jun
name: Wang, Jianping
name: Li, Xin
name: Poppen, Paul J.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Chinese shidu parents (bereaved parents over the age of 49 who have lost their only child) are potentially at a high risk of prolonged grief disorder (PGD), posttraumatic stress disorder (PTSD) and insomnia. The current study aimed to estimate three network models in 310 shidu parents who met the ICD-11 criteria for PGD: (1) a PGD network to identify central symptoms; (2) a comorbidity network to explore bridge symptoms between PGD and PTSD; (3) a comorbidity network to examine the associations between PGD and insomnia symptoms. The R-packages bootnet, qgraph and networktools were used to investigate the structure of network models and centrality indices of symptoms. In addition, robustness and significance analyses for the edge weights and the order of centrality were performed. Emotional pain and numbness emerged as the most central symptoms in the PGD network. In the PGD-PTSD comorbidity network, the highest bridge strength symptoms were inability to trust others (PGD) and feeling upset (PTSD). Inability to trust others (PGD), avoidance (PGD), and impairment of life quality (insomnia) were possible bridge symptoms connecting PGD and insomnia. Reducing emotional pain and numbness may be a viable target in PGD interventions for shidu parents. Additionally, findings suggest that future studies could examine the role of inability to trust others and avoidance in PGD comorbidities. • Emotional pain and numbness were the most influential symptoms in shidu parents with PGD. The role of PGD symptoms of inability to trust others and avoidance in the comorbidities of PGD with PTSD and insomnia might be worthy of further study
SDSS J142625.71+575218.3, a Prototype for a New Class of Variable White Dwarf
Creators: name: Montgomery, M. H.
name: Williams, Kurtis A.
name: Winget, D. E.
name: Dufour, Patrick
name: Degennaro, Steven
name: Liebert, James
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a search for pulsations in six of the recently discovered carbon-atmosphere white dwarf ("hot DQ") stars. Based on our theoretical calculations, the star SDSS J142625.71+575218.3 is the only object expected to pulsate. We observe this star to be variable, with significant power at 417.7 s and 208.8 s (first harmonic), making it a strong candidate as the first member of a new class of pulsating white dwarf stars, the DQVs. Its folded pulse shape, however, is quite different from that of other white dwarf variables, and shows similarities with that of the cataclysmic variable AM CVn, raising the possibility that this star may be a carbon-transferring analog of AM CVn stars. In either case, these observations represent the discovery of a new and exciting class of object.
description: Accepted for publication in the ApJ Letters. 4 pages, 4 figures, Figure 4 reduced in resolution
Clustered Star Formation in the center of NGC 253 Contributes to Driving the Ionized Nuclear Wind
Creators: name: Mills, E. A. C.
name: Gorski, M.
name: Emig, K. L.
name: Bolatto, A. D.
name: Levy, R. C.
name: Leroy, A. K.
name: Ginsburg, A.
name: Henshaw, J. D.
name: Zschaechner, L. K.
name: Veilleux, S.
name: Tanaka, K.
name: Meier, D. S.
name: Walter, F.
name: Krieger, N.
name: Ott, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new 3 mm observations of the ionized gas toward the nuclear starburst in the nearby (D ~ 3.5 Mpc) galaxy NGC 253. With ALMA, we detect emission from the H40-alpha and He40-alpha lines in the central 200 pc of this galaxy on spatial scales of ~4 pc. The recombination line emission primarily originates from a population of approximately a dozen embedded super star clusters in the early stages of formation. We find that emission from these clusters is characterized by electron temperatures ranging from 7000-10000 K and measure an average singly-ionized helium abundance = 0.25 +/- 0.06, both of which are consistent with values measured for HII regions in the center of the Milky Way. We also report the discovery of unusually broad-linewidth recombination line emission originating from seven of the embedded clusters. We suggest that these clusters contribute to the launching of the large-scale hot wind observed to emanate from the central starburst. Finally, we use the measured recombination line fluxes to improve the characterization of overall embedded cluster properties, including the distribution of cluster masses and the fractional contribution of the clustered star formation to the total starburst, which we estimate is at least 50%.
description: ApJ Accepted. 20 pages, 8 figures
Additional file 2 of Insights into the diversification of subclade IVa bHLH transcription factors in Fabaceae
Creators: name: Suzuki, Hayato
name: Seki, Hikaru
name: Muranaka, Toshiya
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 2 Supplemental Data S1. Protein sequences of 362 subclade IVa bHLHs used for phylogenetic tree analysis.
Solving the puzzle of nuclear stopping power
Creators: name: Jeżabek, Marek
name: Rybicki, Andrzej
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper reviews our recent findings on the dynamics of transport of baryon number in proton-induced reactions at the CERN SPS. These are put in a more general context of the present understanding of baryon stopping phenomena up to LHC and cosmic ray energies. The implications of our studies, advantages to be provided by modern and high quality experimental data, and perspectives of new measurements are shortly discussed.
description: 24 pages, 6 figures
Every contact manifold can be given a non-fillable contact structure
Creators: name: Niederkrüger, Klaus
name: van Koert, Otto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Symplectic Geometry (math.SG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 53D35; 57R17

description: Recently Francisco Presas Mata constructed the first examples of closed contact manifolds of dimension larger than 3 that contain a plastikstufe, and hence are non-fillable. Using contact surgery on his examples we create on every sphere S^{2n-1}, n>1, an exotic contact structure ξ_- that also contains a plastikstufe. As a consequence, every closed contact manifold M (except S^1) can be converted into a contact manifold that is not (semi-positively) fillable by taking the connected sum of M with (S^{2n-1},ξ_-).
description: 15 pages, 4 figures
Additional file 3 of Insights into the diversification of subclade IVa bHLH transcription factors in Fabaceae
Creators: name: Suzuki, Hayato
name: Seki, Hikaru
name: Muranaka, Toshiya
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 3 Fig. S1. Phylogenetic tree of subclade IIIf and IVa bHLH proteins in Glycine max and Arabidopsis thaliana. Fig. S2. Detailed phylogenetic tree of subclade IVa bHLHs in fabids. Fig. S3. Predicted domains of subclade IVa bHLH proteins identified using MEME. Fig. S4. Expression patterns of TSAR1 orthologues. Data were retrieved from Lotus Base, Soybean eFP browser, and Medicago eFP browser. Fig. S5. Biosynthesis pathways for aglycones of soyasaponins and hemolytic saponins from M. truncatula. This figure shows representative aglycones of soyasaponins and hemolytic saponins. Cytochrome P450 monooxygenases have been found to oxidise different carbon positions of the β-amyrin backbone [cytochrome P450 enzymes (positions to be oxidised), *characterised in soybean]. Although the soyasaponin pathway is common among Fabaceae, only Medicago spp. acquired the hemolytic pathway. Fig. S6. Expression of LjCYP93E1 and LjbHLH032. Data retrieved from Lotus Base. Lj1g3v3555800: LjCYP93E1; Lj0g3v0292969: LjbHLH032.
Bohmian Mechanics with Complex Action: A New Trajectory-Based Formulation of Quantum Mechanics
Creators: name: Goldfarb, Yair
name: Degani, Ilan
name: Tannor, David J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In recent years there has been a resurgence of interest in Bohmian mechanics as a numerical tool because of its local dynamics, which suggest the possibility of significant computational advantages for the simulation of large quantum systems. However, closer inspection of the Bohmian formulation reveals that the nonlocality of quantum mechanics has not disappeared -- it has simply been swept under the rug into the quantum force. In this paper we present a new formulation of Bohmian mechanics in which the quantum action, S, is taken to be complex. This leads to a single equation for complex S, and ultimately complex x and p but there is a reward for this complexification -- a significantly higher degree of localization. The quantum force in the new approach vanishes for Gaussian wavepacket dynamics, and its effect on barrier tunneling processes is orders of magnitude lower than that of the classical force. We demonstrate tunneling probabilities that are in virtually perfect agreement with the exact quantum mechanics down to 10^{-7} calculated from strictly localized quantum trajectories that do not communicate with their neighbors. The new formulation may have significant implications for fundamental quantum mechanics, ranging from the interpretation of non-locality to measures of quantum complexity.
Aubry sets vs Mather sets in two degrees of freedom
Creators: name: Massart, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37J50

description: We study autonomous Tonelli Lagrangians on closed surfaces. We aim to clarify the relationship between the Aubry set and the Mather set, when the latter consists of periodic orbits which are not fixed points. Our main result says that in that case the Aubry set and the Mather set almost always coincide.
description: Revised and expanded version. New proof of Lemma 2.3 (formerly Lemma 14)
MOESM4 of An enrichment method to increase cell-free fetal DNA fraction and significantly reduce false negatives and test failures for non-invasive prenatal screening: a feasibility study
Creators: name: Hu, Ping
name: Liang, Dong
name: Chen, Yangyi
name: Lin, Ying
name: Qiao, Fengchang
name: Li, Hang
name: Wang, Ting
name: Peng, Chunfang
name: Luo, Donghong
name: Liu, Hailiang
name: Xu, Zhengfeng
Publisher: name: figshare
Year: 2019
Subjects: Medicine
Cell Biology
Biological Sciences not elsewhere classified
Mathematical Sciences not elsewhere classified

description: Additional file 4: Table S3. Information of â no-callâ results.
A faint companion around CrA-9: protoplanet or obscured binary?
Creators: name: Christiaens, V.
name: Ubeira-Gabellini, M. -G.
name: Cánovas, H.
name: Delorme, P.
name: Pairet, B.
name: Absil, O.
name: Casassus, S.
name: Girard, J. H.
name: Zurlo, A.
name: Aoyama, Y.
name: Marleau, G-D.
name: Spina, L.
name: van der Marel, N.
name: Cieza, L.
name: Lodato, G.
name: Pérez, S.
name: Pinte, C.
name: Price, D. J.
name: Reggiani, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Understanding how giant planets form requires observational input from directly imaged protoplanets. We used VLT/NACO and VLT/SPHERE to search for companions in the transition disc of 2MASS J19005804-3645048 (hereafter CrA-9), an accreting M0.75 dwarf with an estimated age of 1-2 Myr. We found a faint point source at $\sim$0.7'' separation from CrA-9 ($\sim$108 au projected separation). Our 3-epoch astrometry rejects a fixed background star with a $5σ$ significance. The near-IR absolute magnitudes of the object point towards a planetary-mass companion. However, our analysis of the 1.0-3.8$μ$m spectrum extracted for the companion suggests it is a young M5.5 dwarf, based on both the 1.13-$μ$m Na index and comparison with templates of the Montreal Spectral Library. The observed spectrum is best reproduced with high effective temperature ($3057^{+119}_{-36}$K) BT-DUSTY and BT-SETTL models, but the corresponding photometric radius required to match the measured flux is only $0.60^{+0.01}_{-0.04}$ Jovian radius. We discuss possible explanations to reconcile our measurements, including an M-dwarf companion obscured by an edge-on circum-secondary disc or the shock-heated part of the photosphere of an accreting protoplanet. Follow-up observations covering a larger wavelength range and/or at finer spectral resolution are required to discriminate these two scenarios.
description: 24 pages, 14 figures, 4 tables, to be published in MNRAS
Γλωσσική Επάρκεια και Γλωσσική Επίδοση Δίγλωσσων μαθητών με Μαθησιακές Δυσκολίες και Ήπια Νοητική Ανεπάρκεια
Creators: name: Μπέλια, Αναστασία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Γλωσσική επάρκεια και Γλωσσική επίδοση
Μαθητές από γλωσσικές και πολιτισμικές μειονότητες
Μαθησιακές δυσκολίες και ήπια νοητική ανεπάρκεια
Language competence and Language achievement
Culturally and linguistically diverse students
Learning disabilities and mild mental retardation

description: Στην παρούσα έρευνα μελετώνται οι περιπτώσεις δίγλωσσων μαθητών που παρουσιάζουν γλωσσική υποεπίδοση. Μέσω των Ψυχομετρικών κριτηρίων που χορηγήθηκαν προσπαθήσαμε να ανιχνεύσουμε αν το αίτιο της γλωσσικής υποεπίδοσης οφείλεται στην ποιοτικά χαμηλή γλωσσική επάρκεια ή στις Ειδικές Μαθησιακές Δυσκολίες που πιθανά παρουσιάζει ο μαθητής. Κατά τη διάρκεια της ερευνητικής διαδικασίας μελετήθηκαν περιπτώσεις δίγλωσσων και μονόγλωσσων μαθητών με γενικευμένη χαμηλή ακαδημαϊκή επίδοση. Η έρευνα που πραγματοποιήθηκε εστίασε σε μαθητές γλωσσικών και πολιτισμικών μειονοτήτων της Πρωτοβάθμιας εκπαίδευσης οι οποίοι φοιτούσαν στην Δ΄, Ε΄, Στ΄ Δημοτικού. Σκοπός της διατριβής ήταν η διερεύνηση της σχέσης της γλωσσικής επάρκειας και της γλωσσικής επίδοσης μαθητών γλωσσικών και πολιτισμικών μειονοτήτων τυπικής ανάπτυξης, με μαθησιακές δυσκολίες και ήπια νοητική ανεπάρκεια.
description: This current research includes case studies of culturally and linguistically diverse students with low language achievement. By applying psychometric criteria, we tried to detect if the cause of low language achievement is due to lower levels of language competence or due to pupils’ specific learning disabilities. During the research progress, various cases of bilingual and monolingual students with low achievement were studied. The research focused on culturally and linguistically diverse primary school students who attend the fourth, fifth and sixth year of elementary school. The aim of the present thesis seeks to explore the possible association between language competence and language achievement of culturally and linguistically diverse students including typically developed, with learning disabilities and mild mental retardation.
Prism international
Creators: name: Prism International
Publisher: name: Vancouver : The Creative Writing Program of the University of British Columbia
Year: 2015

description: The following description is provided by the publisher:
 THE MUSIC ISSUE
 Editors’ Notes
 FICTION
 from “After the Lightning Field” by Heather Jessup
 “Strangers” by Aaron Shepard
 “The Unlucky Few” by Matthew Hamity
 ILLUSTRATION
 “The Little Musician” by Colleen Thomas
 INTERVIEW
 Heather Jessup in conversation with Anne Simpson
 LYRICS
 “Hold Your Breath” / “Glory” by Rolf Klausener & The Acorn
 NON-FICTION
 “Search & Discover” by Lee Henderson
 POETRY
 from “Book of Beginnings” by Anne Simpson
 “Fighting the Music” by Stephanie Yorke
 “Coastline Variation #38” / “The Good People of Newmarket and Aurora” by Nick Thran
 from “The Song of Wandering Years” by Fumiko Hayashi, translated by Mariko Nagai
 “The Wild Parakeets of Paris” by Sue Chenette
 “Legerdemain” by Jen Bills
 “Carillon” by Jesse Patrick Ferguson
 SOUND ADVICE
 Eden Robinson, Bryan Webb, Alison Pick, Lawrence Hill, Chris Smith, Nick Thran, Pasha Malla, Adam Lewis Schroeder, Lee Henderson and Rolf Klausener
Topology of contact points in Lieb-kagomé model
Creators: name: Abramovici, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyse Lieb-kagomé model, a three-band model with contact points showing particular examples of the merging of Dirac contact points. We prove that eigenstates can be parametrized in a classification surface, which is a hypersurface of a 4-dimension space. This classification surface is a powerful device giving topological properties of the energy band structure; the analysis of its fundamental group proves that all singularities of the band structure can be characterized by four independent winding (integer) numbers. Lieb case separates: its classification surface differs and there is only one winding number.
description: 24 pages
Prism international
Creators: name: Prism International
Publisher: name: Vancouver : The Creative Writing Program of the University of British Columbia
Year: 2015

description: The following description is provided by the publisher:
 PRISM SHORT FICTION CONTEST ISSUE
 Interview with Contest Judge Chris Labonte
 FICTION
 Grand Prize Winner
 “The Taste of Persimmons” by Patricia Brieschke
 Runners-up
 “Evolution” by Amanda Leduc
 “Libra and Pisces” translated from the Taiwanese by Hsiang Hsu
 POETRY
 “The Hottest Summer in Recorded History” by Elizabeth Bachinsky
 “Man Jailed After Sucking the Toes of Three Unsuspecting Women” / “Aliens Coming Back Home – to Earth” by Shannon Stewart
 “Havana I” / “Havana II” by Rebecca Schwarz
 “The Lizards Hold Court at Delos” by Patrick M. Pilarski
 “The Completed Object” / “Pixel” / “Huertas de Marcal” by Maleea Acker
 “A Short List for K: Things I Can’t Get Rid Of” by Marilyn Potter
 “Zhou Xuan” by Sam Cheuk
 “Gone” by Sheri Benning
 “dusk 1” / “dusk 2” / “dusk 3” by Emily Nilsen
 LITTLE BOOK
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Contextual Argument Component Classification for Class Discussions
Creators: name: Lugini, Luca
name: Litman, Diane
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Argument mining systems often consider contextual information, i.e. information outside of an argumentative discourse unit, when trained to accomplish tasks such as argument component identification, classification, and relation extraction. However, prior work has not carefully analyzed the utility of different contextual properties in context-aware models. In this work, we show how two different types of contextual information, local discourse context and speaker context, can be incorporated into a computational model for classifying argument components in multi-party classroom discussions. We find that both context types can improve performance, although the improvements are dependent on context size and position.
Discussion Tracker: Supporting Teacher Learning about Students' Collaborative Argumentation in High School Classrooms
Creators: name: Lugini, Luca
name: Olshefski, Christopher
name: Singh, Ravneet
name: Litman, Diane
name: Godley, Amanda
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Teaching collaborative argumentation is an advanced skill that many K-12 teachers struggle to develop. To address this, we have developed Discussion Tracker, a classroom discussion analytics system based on novel algorithms for classifying argument moves, specificity, and collaboration. Results from a classroom deployment indicate that teachers found the analytics useful, and that the underlying classifiers perform with moderate to substantial agreement with humans.
Tunneling through magnetic molecules with arbitrary angle between easy axis and magnetic field
Creators: name: Timm, Carsten
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Inelastic tunneling through magnetically anisotropic molecules is studied theoretically in the presence of a strong magnetic field. Since the molecular orientation is not well controlled in tunneling experiments, we consider arbitrary angles between easy axis and field. This destroys all conservation laws except that of charge, leading to a rich fine structure in the differential conductance. Besides single molecules we also study monolayers of molecules with either aligned or random easy axes. We show that detailed information on the molecular transitions and orientations can be obtained from the differential conductance for varying magnetic field. For random easy axes, averaging over orientations leads to van Hove singularities in the differential conductance. Rate equations in the sequential-tunneling approximation are employed. An efficient approximation for their solution for complex molecules is presented. The results are applied to Mn12-based magnetic molecules.
description: 10 pages, 10 figures included
Δημιουργία Συστήματος Γεωγραφικών Πληροφοριών για τα Νεώτερα Μνημεία της Πυρίκαυστης Ζώνης Θεσσαλονίκης
Creators: name: Νάστου, Χριστίνα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Συστήματα Γεωγραφικών Πληροφοριών
Πυρίκαυστη Ζώνη Θεσσαλονίκης
Φωτογραμμετρία
Geographical Information Systems
Burned Zone of Thessaloniki
Photogrammetry

description: Αντικείμενο της παρούσας διπλωματικής εργασία είναι η Δημιουργία Βάσης Δεδομένων και Συστήματος Γεωγραφικών Πληροφοριών με Φωτογραμμετρικές Λήψεις για τα Νεώτερα Μνημεία της Πυρίκαυστης Ζώνης Θεσσαλονίκης. Στα πλαίσια της εργασίας δημιουργείται μία βάση δεδομένων με φωτογραφικές λήψεις με σκοπό την μελλοντική τους χρήση για φωτογραμμετρικά προϊόντα. Επίσης, δημιουργείται ένα σύστημα γεωγραφικών πληροφοριών όπου ψηφιοποιούνται όλα τα νεώτερα μνημεία της πυρίκαυστης ζώνης της Θεσσαλονίκης καθώς και τα ρωμαϊκά, βυζαντινά και οθωμανικά μνημεία του ιστορικού κέντρου και της Άνω Πόλης. Επιπλέον, παρουσιάζονται κάποια παραδείγματα φωτογραμμετρικής και φωτογραφικής τεκμηρίωσης των νεωτέρων μνημείων. Τέλος, για την ανάδειξη όλων των μνημείων της πόλης λαμβάνουν χώρα δράσεις, όπως πολιτιστικές διαδρομές και ξεναγήσεις, οι οποίες συμπεριλαμβάνονται και στην εφαρμογή του συστήματος γεωγραφικών πληροφοριών.
description: The aim of this master thesis is the creation of a Data Base and a Geographical Information System of Photogrammetric Shots for the Monuments of the Historical Centre of Thessaloniki. A data base with photographs is created in order to be used for photogrammetric products in the future. Furthermore, a geographical information system is created, where the monuments of Thessaloniki’s historical centre are digitized. Also, examples of photogrammetric and photographic documentation are presented. Finally, some actions are taking place, in order to promote the cultural heritage of Thessaloniki, such as tours and guides, which are included on the geographical information system.
A Phase Transition in a Quantum Crystal with Asymmetric Potentials
Creators: name: Kargol, Alina
name: Kozitsky, Yuri
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82B10; 82B26

description: A translation invariant system of interacting quantum anharmonic oscillators indexed by the elements of a simple cubic lattice $\mathbb{Z}^d$ is considered. The anharmonic potential is of general type, which in particular means that it might have no symmetry. For this system, we prove that the global polarization (obtained in the thermodynamic limit) gets discontinuous at a certain value of the external field provided $d\geq 3$, and the particle mass as well as the interaction intensity are big enough. The proof is based on the representation of local Gibbs states in terms of path measures and thereby on the use of the infrared estimates and the Garsia-Rodemich-Rumsey inequality.
description: 15 pages
Preprints: an opportunity for African science?
Creators: name: Penfold, Naomi C.
Publisher: name: Zenodo
Year: 2019
Subjects: preprints
infection biology
ghana

description: Presentation for WACCBIP annual conference 2019, July 24-26. This slide deck includes slides adapted from those originally made by Jessica Polka (https://orcid.org/0000-0001-6610-9293) and Michael Johansson (http://orcid.org/0000-0002-5090-7722), and with resources contributed by ASAPbio ambassadors (https://asapbio.org/asapbio-ambassadors) and the TRANSPOSE team (https://transpose-publishing.github.io/#/).

 Abstract: Current innovations in research communication seek to improve research reproducibility and facilitate career progression by improving speed and transparency in life sciences and biomedical publishing. Collectively known as ‘open science practices’, these include efforts to publish all research outputs (protocols, data, code, resources) openly (open access), with less publication delay (preprints, open lab notebooks) and with greater transparency in peer review and research evaluation. While often grounded in the challenges faced and privileges held by researchers in the USA and Western Europe, such practices and innovations may also benefit scientists working in African institutions or inspire further innovation within Africa. Researchers in Africa face the same pressure to publish in journals that meet international quality standards as their peers elsewhere. However, difficulties may arise when access to resources is constrained and with the emergence of predatory publishers. Given biomedical research addresses locally and nationally relevant health issues, we must also ask to whom this research needs communicating and how this can be done effectively. At WACCBIP, ‘open science practices’ could support researchers to demonstrate research productivity and quality, arrange collaborative resource allocation, and communicate the latest biomedical research findings to practitioners without delay. As Associate Director of ASAPbio, a scientist-led non-profit organisation working to increase the productive use of preprinting in the life sciences, I come to share knowledge about the practicalities of preprints. I will demonstrate how preprinting works alongside traditional publishing and scientific peer review, consider the additional benefits it could bring to African researchers, and discuss risks, concerns and potential unintended consequences.
On the integrated behaviour of non-stationary volatility in stock markets
Creators: name: Dionisio, Andreia
name: Menezes, Rui
name: Mendes, Diana A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: This paper analyses the behaviour of volatility for several international stock market indexes, namely the SP 500 (USA), the Nikkei (Japan), the PSI 20 (Portugal), the CAC 40 (France), the DAX 30 (Germany), the FTSE 100 (UK), the IBEX 35 (Spain) and the MIB 30 (Italy), in the context of non-stationarity. Our empirical results point to the evidence of the existence of integrated behaviour among several of those stock market indexes of different dimensions. It seems, therefore, that the behaviour of these markets tends to some uniformity, which can be interpreted as the existence of a similar behaviour facing to shocks that may affect the worldwide economy. Whether this is a cause or a consequence of market globalization is an issue that may be stressed in future work.
description: 10 pages, 3 figures. Paper presented in the APFA 5 conference
Axion Excitation by Intense Laser Fields
Creators: name: Mendonca, J. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Parametric excitation of axions by two beating electromagnetic fields is considered here. This can be used as a new concept for active experiments using the existing ultra-intense laser systems. Comparison is made of this active experimental concept with the present day passive experiments using static magnetic fields.
description: Withdrawn; New version will follow as a new e-print
Additional file 1 of Viral time capsule: a global photo-elicitation study of child and adolescent mental health professionals during COVID-19
Creators: name: Herrington, Olivia D.
name: Clayton, Ashley
name: Laelia Benoit
name: Prins-Aardema, Cecil
name: DiGiovanni, Madeline
name: Indigo Weller
name: Martin, Andrés
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Appendix S1. List of countries with at least one photo-elicitation contribution to the study.
An unbiased ray-marching transmittance estimator
Creators: name: Kettunen, Markus
name: d'Eon, Eugene
name: Pantaleoni, Jacopo
name: Novak, Jan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: We present an in-depth analysis of the sources of variance in state-of-the-art unbiased volumetric transmittance estimators, and propose several new methods for improving their efficiency. These combine to produce a single estimator that is universally optimal relative to prior work, with up to several orders of magnitude lower variance at the same cost, and has zero variance for any ray with non-varying extinction. We first reduce the variance of truncated power-series estimators using a novel efficient application of U-statistics. We then greatly reduce the average expansion order of the power series and redistribute density evaluations to filter the optical depth estimates with an equidistant sampling comb. Combined with the use of an online control variate built from a sampled mean density estimate, the resulting estimator effectively performs ray marching most of the time while using rarely-sampled higher order terms to correct the bias.
description: 20 pages
Quantization of noncommutative completely integrable Hamiltonian systems
Creators: name: Giachetta, G.
name: Mangiarotti, L.
name: Sardanashvily, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Integrals of motion of a Hamiltonian system need not be commutative. The classical Mishchenko-Fomenko theorem enables one to quantize a noncommutative completely integrable Hamiltonian system around its invariant submanifold as an abelian completely integrable Hamiltonian system.
description: 11 pages, accepted for publication in Phys. Lett. A
Asymptotic behavior and hypercontractivity in nonautonomous Ornstein-Uhlenbeck equations
Creators: name: Geissert, Matthias
name: Lunardi, Alessandra
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 47D06, 47F05, 35B65

description: In this paper we investigate a class of nonautonomous linear parabolic problems with time depending Ornstein-Uhlenbeck operators. We study the asymptotic behavior of the associated evolution operator and evolution semigroup in the periodic and non-periodic situation. Moreover, we show that the associated evolution operator is hypercontractive.
Creating Quantum Emitters in Hexagonal Boron Nitride Deterministically on Chip-Compatible Substrates
Creators: name: Xu, Xiaohui
name: Martin, Zachariah O.
name: Sychev, Demid
name: Lagutchev, Alexei S.
name: Chen, Yong
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Shalaev, Vladimir M.
name: Boltasseva, Alexandra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two-dimensional hexagonal boron nitride (hBN) that hosts bright room-temperature single-photon emitters (SPEs) is a promising material platform for quantum information applications. An important step towards the practical application of hBN is the on-demand, position-controlled generation of SPEs. Several strategies have been reported to achieve the deterministic creation of hBN SPEs. However, they either rely on a substrate nanopatterning procedure that is not compatible with integrated photonic devices or utilize a radiation source that might cause unpredictable damage to hBN and underlying substrates. Here, we report a radiation- and lithography-free route to deterministically activate hBN SPEs by nanoindentation with an atomic force microscope (AFM) tip. The method is applied to thin hBN flakes (less than 25 nm in thickness) on flat silicon-dioxide-silicon substrates that can be readily integrated into on-chip photonic devices. The achieved SPEs yields are above 30% by utilizing multiple indent sizes, and a maximum yield of 36% is demonstrated for the indent size of around 400 nm. Our results mark an important step towards the deterministic creation and integration of hBN SPEs with photonic and plasmonic on-chip devices.
description: 31 pages, 14 figures
1+1 Dimensional Hydrodynamics for High-energy Heavy-ion Collisions
Creators: name: Satarov, L. M.
name: Mishustin, I. N.
name: Merdeev, A. V.
name: Stoecker, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A 1+1 dimensional hydrodynamical model in the light-cone coordinates is used to describe central heavy-ion collisions at ultrarelativistic bombarding energies. Deviations from Bjorken's scaling are taken into account by choosing finite-size profiles for the initial energy density. The sensitivity of fluid dynamical evolution to the equation of state and the parameters of initial state is investigated. Experimental constraints on the total energy of produced particles are used to reduce the number of model parameters. Spectra of secondary particles are calculated assuming that the transition from the hydrodynamical stage to the collisionless expansion of matter occurs at a certain freeze-out temperature. An important role of resonances in the formation of observed hadronic spectra is demonstrated. The calculated rapidity distributions of pions, kaons and antiprotons in central Au+Au collisions at the c.m. energy 200 GeV per NN pair are compared with experimental data of the BRAHMS Collaboration. Parameters of the initial state are reconstructed for different choices of the equation of state. The best fit of these data is obtained for a soft equation of state and Gaussian-like initial profiles of the energy density, intermediate between the Landau and Bjorken limits.
description: 43 pages, 27 figures
Additional file 2 of Viral time capsule: a global photo-elicitation study of child and adolescent mental health professionals during COVID-19
Creators: name: Herrington, Olivia D.
name: Clayton, Ashley
name: Laelia Benoit
name: Prins-Aardema, Cecil
name: DiGiovanni, Madeline
name: Indigo Weller
name: Martin, Andrés
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2: Appendix S2. Sample of images examplifying domains and themes.