cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Teacher Perspectives on SRL Implementation and Reading Comprehension
Creators: name: Taranto, Daniella
Publisher: name: Australian Catholic University
Year: 2023
Subjects: Self-Regulated Learning
Reading comprehension
Professional Development
Student readiness
primary school

description: Self-Regulated Learning (SRL) is widely recognised as an indispensable aspect of academic success and lifelong learning (Taranto & Buchanan, 2020). This has led to a notable upsurge in implementing SRL principles into formal education as early as primary school (Alvi & Gillies, 2020; Perry et al., 2018). Specifically, in literacy education, researchers have emphasised the close relationship between SRL processes and reading comprehension (Cirino et al., 2017; Kuzmina & Glazunova, 2021; Schaffner et al., 2021). However, the effective implementation of SRL in primary school classroom settings is an emerging area of research that has only begun in recent years. Exploring how teachers understand SRL implementation is crucial to inform curriculum design, pedagogy, and research in this area (De Smul et al., 2020; Harding et al., 2019; Peel, 2020). To this end, the research project presented in this thesis aimed to explore Grades 5 and 6 primary school teachers’ perspectives on effective SRL implementation, particularly in the context of reading comprehension. The study was conducted in a Catholic primary school in Victoria, Australia, using an integrated SRL approach to teaching and learning. Unstructured interviews were utilised to capture the participants’ perspectives. The principles of Classic Grounded Theory (Glaser & Strauss, 1967) were employed to identify, conceptualise and analyse the participants’ understanding of effective SRL implementation and reading comprehension.

The findings indicated that the teachers in this study considered a combination of approaches to SRL-focused professional development (PD) as vital for developing the professional expertise necessary for successfully implementing SRL in Grades 5 and 6 classrooms. The study underscored the significance of SRL content knowledge, SRL pedagogical content knowledge, and knowledge of SRL performance for teachers to feel prepared and equipped to implement SRL effectively. The findings also highlighted the importance of building student readiness for SRL based on constructivist principles, such as students’ conceptual understanding of SRL, epistemological beliefs, and personal relevance to SRL. The study further provided insights into the role of reading-specific epistemological beliefs and social interactions in developing students’ SRL skills in the context of reading comprehension. Based on the research findings, a substantive conceptual model, the Lyceum Model, was formed, encapsulating effective SRL implementation and reading comprehension as perceived by teachers in Grades 5 and 6. This model offers a comprehensive philosophical platform and operational structure for SRL implementation and reading comprehension in the primary school sector.
Probability of informed trading around scheduled and unscheduled corporate announcements
Creators: name: Qian, Meifen
Publisher: name: The Australian National University
Year: 2011
Subjects: subject: Stock exchanges Mathematical models.
subject: Stock exchanges United States
subject: Probabilities.
subject: Speculation Mathematical models

description: This thesis examines how public announcement events with different characteristics affect the probability of informed trading (PI). Using the Bollen, Smith and Whaley (2004) model of inferring PI directly from trades, we investigate the differences in PI between the pre-announcement period and post-announcement period from 2002 to 2008 in the American stock market along two dimensions: whether announcements are scheduled; and other characteristics related to the content such as payment methods, offer premium (takeover announcements) and earnings surprises (earnings announcements). We first focus on unscheduled takeover announcements. Our results show that PI (and bid/ask spread) is significantly higher in the pre-announcement period compared to that in the post-announcement period. Further, we link the changes in PI to takeover announcement characteristics. We show that PI is significantly higher in the pre-event period for successful offers and cash offers as well as offers with relatively high premiums. In contrast, the changes in PI after announcement are not significant for unsuccessful offers, stock or mixed offers as well as offers with relatively low premiums. We then investigate informed trading around scheduled earnings announcements. Results indicate that PI (and bid/ask spread) before earnings announcements is not significantly higher than after the announcement. However, when breaking down the sample according to the size of the earnings surprise, we find significant incremental PI in the pre-earnings period when reported earnings contain big surprises with respect to the forecasts. Finally, we contrast PI around public announcements, conditioning on whether the announcement is scheduled or unscheduled. We find that the level of PI for scheduled earnings announcements are significantly higher than for unscheduled takeover announcements in the post-announcement period but not in the pre-announcement period. Our results are consistent with the argument that an announcement that is anticipated stimulates relatively more private information gathering, and hence the degree of information asymmetry around scheduled announcements might be higher. We also find that trading volume dries up in the pre-announcement period for scheduled earnings announcements. -- provided by Candidate.
An accelerator facility for intermediate energy proton irradiation and testing of nuclear materials
Creators: name: Jepeal, S. J.
name: Danagoulian, A.
name: Kesler, L. A.
name: Korsun, D. A.
name: Lee, H. Y.
name: Schwartz, N.
name: Sorbom, B. N.
name: Lopez, E. Velez
name: Hartwig, Z. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The bulk irradiation of materials with 10-30 MeV protons promises to advance the study of radiation damage for fission and fusion power plants. Intermediate energy proton beams can now be dedicated to materials irradiation within university-scale laboratories. This paper describes the first such facility, with an Ionetix ION-12SC cyclotron producing 12 MeV proton beams. Samples are mm-scale tensile specimens with thicknesses up to 300 um, mounted to a cooled beam target with control over temperature. A specialized tensile tester for radioactive specimens at high temperature (500+ °C) and/or vacuum represents the conditions in fission and fusion systems, while a digital image correlation system remotely measures strain. Overall, the facility provides university-scale irradiation and testing capability with intermediate energy protons to complement traditional in-core fission reactor and micro-scale ion irradiation. This facility demonstrates that bulk proton irradiation is a scalable and effective approach for nuclear materials research, down-selection, and qualification.
description: Submitted to NIM B journal
A retrospective real-world evidence assessment of association of the Migraine Disability Assessment Score (MIDAS) with healthcare utilization among patients with episodic migraines in the U.S.
Creators: name: LaVallee, John Christopher
name: 0000-0002-8119-4251
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Episodic migraine
MIDAS
Healthcare resource utilization

description: The impact of migraine-related disability on healthcare resources utilization (HRU) is unclear. The objective was to determine the relationship between Migraine Disability Assessment Scores (MIDAS) and HRU among people with episodic migraines (EM) treated in a real-world setting. Data were obtained from the DRG RWD Repository. Adults with EM and ≥ 1 completed MIDAS survey, 01/2016 to 12/2018, were included. Descriptive statistics and inferential tests assessed the relationship between MIDAS scores and HRU. Results were then stratified by physician type, patients treated only in primary care (PC) and patients with at least one specialist (SC) visit. In total, 756 patients were included; mean age was 47.8 (14.9); 87.7% were female; 49.6% resided in the South. MIDAS distribution was, in order of lowest disability to highest disability: 31.7% Grade I; 13.9% Grade II; 19.4% Grade III; 14.9% Grade IV-A; and 20.0% Grade IV-B. Grade I patients were the oldest (51-years) and included a higher percentage of men (38%-vs-31% women). A quasi-linear trend was seen in the proportion of patients with a headache diagnosis and MIDAS severity (47% to 51%). The subset of patients with at least one SC visit was 533 (70.5%), leaving 223 (29.5%) PC patients, with no differences in MIDAS categories by physician type. Utilization for 6-months post-index was assessed. No major trends were detected comparing MIDAS scores and HRU. The most common preventative medications were antidepressants (23.4%); lower for SC patients (18.8%) than PC patients (34.5%). The most common relief medications included triptans (28.7%), again lower for SC patients (24.6%) than PC (38.6%). Opioids were used by about 18% of patients for both practitioner types. A higher proportion of patients with SC received care in an office setting (81.8%-vs-73.5%) and/or the ER (10.1-vs-6.3%). Secondary analyses assessing Lost Productivity Time (LPT) found similar trends. For the 492 patients with at least two MIDAS scores, 49% (N=243) showed a reduction in their MIDAS category, indicating improvement. No major trends were detected comparing MIDAS scores and HRU. Medication utilization was lower for the SC group, while the percent of patients with an office visit or ER visit was higher.
Optical fibers with interferometric path length stability by controlled heating for transmission of optical signals and as components in frequency standards
Creators: name: Mueller, Holger
name: Peters, Achim
name: Braxmaier, Claus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a simple method to stabilize the optical path length of an optical fiber to an accuracy of about 1/100 of the laser wavelength. We study the dynamic response of the path length to modulation of an electrically conductive heater layer of the fiber. The path length is measured against the laser wavelength by use of the Pound-Drever-Hall method; negative feedback is applied via the heater. We apply the method in the context of a cryogenic resonator frequency standard.
description: Expanded introduction and outlook. 9 pages, 5 figures
Optimal control of quantum systems using dynamic programming
Creators: name: Sridharan, Srinivas
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: QA402.3.S75 2010
subject: Quantum theory
subject: Control theory Computer programs
subject: Dynamic programming

description: This thesis focuses on the optimal control of a class of closed 1 quantum systems. It encompasses and addresses the following themes 1. The theoretical underpinnings of the dynamic programming method for quantum spin systems. 2. The efficient numerical implementation of algorithms to generate optimal control laws. The use of the dynamic programming principle from optimal control theory for the control of quantum systems is introduced, while taking into account the properties of the manifolds on which they evolve. This enables the unified application of dynamic programming to disparate problems which were previously approached using distinct tools. Moreover the approach herein is applicable, in principle, to an arbitrarily large quantum system - thereby overcoming the limitations present in some other commonly used methods in the literature, on the size of the quantum system being analyzed. As the optimal cost function is non-differentiable in several cases of interest, this thesis provides a rigorous interpretation of this cost function in terms of viscosity solutions of the associated Hamilton-Jacobi-Bellman (HJB) partial differential equation (PDE) over the manifolds of interest. This framework is applied to explore optimal control strategies for drift and drift-less quantum systems that arise in various applications - thus demonstrating the efficacy of a unified approach to address problems on qualitatively different systems. This thesis also investigates, via two distinct avenues, the efficient numerical solution to optimal control problems of interest. Firstly, it brings together the Markov chain ap- proximation methods of Kushner-Dupuis and the triangulation of manifolds introduced by Munkres, in order to numerically solve the optimal control problem on quantum systems via a value iteration approach. Secondly, the exponential growth in computational resources required - termed the curse of dimensionality (COD) -inherent in any spatial discretization approach to solving the HJB PDE is drastically lessened via a new reduced complexity method motivated by the COD free max-plus technique recently developed by McEneaney et al. The dramatic speedup obtained by this approach enables an approximate solution to a previously intractable optimal control problem for a two qubit2 spin system evolving on a 15 dimensional Lie group.
Solitons in two-dimensional Bose-Einstein condensates
Creators: name: Tsuchiya, Shunji
name: Dalfovo, Franco
name: Pitaevskii, Lev P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The excitations of a two-dimensional (2D) Bose-Einstein condensate in the presence of a soliton are studied by solving the Kadomtsev-Petviashvili equation which is valid when the velocity of the soliton approaches the speed of sound. The excitation spectrum is found to contain states which are localized near the soliton and have a dispersion law similar to the one of the stable branch of transverse oscillations of a 1D gray soliton in a 2D condensate. By using the stabilization method we show that these localized excitations behave as resonant states coupled to the continuum of free excitations of the condensate.
description: 4 pages, 4 figures, published version
Citizens of the system : criminal justice contact, political socialization and citizenship
Creators: name: Fredriksson, Klara Maria Cecilia
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Carceral state
Participation
Criminal justice
Mobilization
Political knowledge
Policy feedback

description: Incarceration and other carceral interventions have lifelong material and psychological consequences, but also democratic effects. Much like interactions with other institutions, criminal justice contact teaches those it touches who they are as citizens, and shapes how they express themselves politically. This effect is heavily concentrated among the most vulnerable in American society; the poor, racial minorities, and the otherwise neglected. I argue that the carceral system constitutes a parallel track of political socialization, and that this produces specific behavioral outcomes. Largely separated from traditional means of coming into one’s own politically, carceral citizens receive much of their education through the system itself. The carceral state, for carceral citizens, interferes with and replaces the traditional paths of political socialization that shape the political lives of people without carceral contact. This model has five main components: a) contact starts at a young age, b) this early contact is crucial to the democratic effects we are seeing for this population, c) the carceral state interferes with traditional political socialization mechanisms, d) the carceral state pro- vides an alternative political education for carceral citizens, e) this leads to the exclusion of carceral citizens from politically active networks and mobilization mechanisms. I ask three questions in three separate empirical pieces: Does criminal justice contact initiated at an early age have a stronger effect on one’s lifelong political participation than if this contact happens later? How does the carceral state educate, and what are the behavioral consequences? Do carceral citizens experience mobilization into political participation at the same rate as everyone else?
Lishui Wu tone and tone sandhi : an acoustically-based description
Creators: name: Steed, William James
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: PL1931.S84 2010
subject: Chinese language Spoken Chinese
subject: Wu dialects PhonologyChina Zhejiang Sheng
subject: Phonetics, Acoustic

description: This thesis describes tone and tone sandhi in the Lishui {u4E3D}{u6C34} variety of Wu Chinese from the Chuqu {u5904}{u8862} subgroup in southern Zhejiang, using data from three speakers. The description is both auditory and (normalised-) acoustic, and includes also a derivational account of the tonology, and a description of Lishui segmental phonology and common lexicon. Descriptions are given for citation tones and disyllabic lexical tone sandhi. The results show that, according to Chao's (1928) synchronic typology of Wu, Lishui does not have a typically Wu phonology. Segmentally, Lishui lacks the diagnostic three-way distinction between syllable-initial stops and affricates, distinguishing only +/-aspirated obstruents (with the -aspirated obstruents showing free variation in voicing). Like the Northern Min dialects to its south, its tone sandhi is right-focussed: word-final tones are realised mostly the same as in isolation (although there are some changes), but non-word-final tones have different realisations determined by their input tone and the following tone. Lishui has seven citation tones: mid dipping [324], high and low falling-level [433], [211], high falling [52], low convex [342], and high [5] and low [23] stopped tones. The normalised tonal acoustics show that citation realisations are consistent between speakers. Although the realisation of tones on non-word-final syllables is also shown by normalisation to be mostly consistent between speakers, considerable between-speaker variation is demonstrated in the incidence of these realisations. One of the interesting findings is that the number of realisations on non-word-final syllables, although representing neutralisation of citation contrasts, is often greater than found in citation tones. Moreover, there are very few instances of phonetically motivated sandhi changes, and the changes are usually better expressed in terms of abstract categories which relate to Middle Chinese tonal categories. It is shown that, as a result, a derivational account of the non-word-final tonal realisations is messy. The between-speaker variation in tone sandhi suggests that Lishui tone sandhi is changing quickly.
The discovery of PSR J1833-1034 : the pulsar associated with the supernova remnant G21.5-0.9
Creators: name: Gupta, Y.
name: Mitra, D.
name: Green, D. A.
name: Acharyya, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a young pulsar associated with the supernova remnant G21.5-0.9, using the Giant Metrewave Radio Telescope (GMRT) located near Pune, India. Discovered at a frequency of 610 MHz, J1833-1034 has a period of 61.86 ms and a period derivative of $2.0 \times 10^{-13}$, making it similar to other known young pulsars. The characteristic age of the pulsar is $\approx 4900$ yr, somewhat higher than estimates for the age of the remnant, but not incompatible with it. The pulsar has a spin-down luminosity of $3.3 \times 10^{37}$ erg s$^{-1}$, which is the second highest amongst all the known Galactic pulsars.
description: 5 pages, with 1 figure and 1 table; published in Current Science
The logarithmic negativity: A full entanglement monotone that is not convex
Creators: name: Plenio, M. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is proven that the logarithmic negativity does not increase on average under positive partial transpose preserving (PPT) operation including subselection (a set of operations that incorporate local operations and classical communication (LOCC) as a subset) and, in the process, a further proof is provided that the negativity does not increase on average under the same set of operations. Given that the logarithmic negativity is obtained from the negativity applying a concave function and is itself not a convex quantity this result is surprising as convexity is generally considered as describing the local physical process of losing information. The role of convexity and in particular its relation (or lack thereof) to physical processes is discussed in this context.
description: Replaced with published version which includes one figure
Fluorine-based color centers in diamond
Creators: name: Tchernij, S. Ditalia
name: Lühmann, T.
name: Corte, E.
name: Sardi, F.
name: Picollo, F.
name: Traina, P.
name: Brajkovic, M.
name: Crnjac, A.
name: Pezzagna, S.
name: Degiovanni, I. P.
name: Moreva, E.
name: Aprà, P.
name: Olivero, P.
name: Siketić, Z.
name: Meijer, J.
name: Genovese, M.
name: Forneris, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on the creation and characterization of the luminescence properties of high-purity diamond substrates upon F ion implantation and subsequent thermal annealing. Their room-temperature photoluminescence emission consists of a weak emission line at 558 nm and of intense bands in the 600 - 750 nm spectral range. Characterization at liquid He temperature reveals the presence of a structured set of lines in the 600 - 670 nm spectral range. We discuss the dependence of the emission properties of F-related optical centers on different experimental parameters such as the operating temperature and the excitation wavelength. The correlation of the emission intensity with F implantation fluence, and the exclusive observation of the afore-mentioned spectral features in F-implanted and annealed samples provides a strong indication that the observed emission features are related to a stable F-containing defective complex in the diamond lattice.
description: 10 pages, 5 figures
Helium self--enrichment and the second parameter problem in M3 and M13
Creators: name: Caloi, V.
name: D'Antona, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Inspection of the CM diagrams of globular clusters having similar heavy element content shows that the luminosity of the red giant bump relative to the turnoff (Delta V_{TO}^{bump}) differs by more than 0.1 mag between clusters with different horizontal branch morphology. Unfortunately, careful consideration of the data leaves us with only one pair (M3 and M13) of clusters good for a quantitative discussion. For this pair we consider differences in age and helium content as possible causes for the difference in Delta V_{TO}^{bump}, and find more convincing support for the latter. A larger helium content in M13 stars (Y~0.28 vs. Y~0.24) accounts for various CM diagram features, such as the difference in the luminosity level of RR Lyr variables and of the red giant bump with respect to the turnoff luminosity, and the horizontal branch morphology. This enhanced helium can be tentatively understood in the framework of self--enrichment by massive asymptotic giant branch stars in the first ~100 Myr of the cluster life. A modest self--enrichment can be present also in M3 and can be the reason for the still unexplained presence of a not negligible number of luminous, Oosterhoff II type RR Lyr variables. The hypothesis that a larger helium content is the second parameter for clusters with very blue horizontal branch morphology could be checked by an accurate set of data for more clusters giving turnoff, RR Lyrs and bump magnitudes within a unique photometry.
description: in press on Astronomy and Astrophysics
Relativistic calculations of the isotope shifts in highly charged Li-like ions
Creators: name: Zubova, N.
name: Kozhedub, Y.
name: Shabaev, V.
name: Tupitsyn, I.
name: Volotka, A.
name: Plunien, G.
name: Brandau, C.
name: Stöhlker, T.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Yang-Baxter and the Boost: splitting the difference
Creators: name: de Leeuw, Marius
name: Paletta, Chiara
name: Pribytok, Anton
name: Retore, Ana L.
name: Ryan, Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we continue our classification of regular solutions of the Yang-Baxter equation using the method based on the spin chain boost operator developed in \cite{deLeeuw:2019zsi}. We provide details on how to find all non-difference form solutions and apply our method to spin chains with local Hilbert space of dimensions two, three and four. We classify all $16\times 16$ solutions which exhibit $\mathfrak{su}(2)\oplus \mathfrak{su}(2)$ symmetry, which include the one-dimensional Hubbard model and the $S$-matrix of the ${\rm AdS}_5 \times {\rm S}^5$ superstring sigma model. In all cases we find interesting novel solutions of the Yang-Baxter equation.
Proposed determination of small level splittings in highly charged ions
Creators: name: Wu, Z. W.
name: Kabachnik, N. M.
name: Surzhykov, A.
name: Dong, C. Z.
name: Fritzsche, S.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Vessel-CAPTCHA: an efficient learning framework for vessel annotation and segmentation
Creators: name: Dang, Vien Ngoc
name: Galati, Francesco
name: Cortese, Rosa
name: Di Giacomo, Giuseppe
name: Marconetto, Viola
name: Mathur, Prateek
name: Lekadir, Karim
name: Lorenzi, Marco
name: Prados, Ferran
name: Zuluaga, Maria A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Deep learning techniques for 3D brain vessel image segmentation have not been as successful as in the segmentation of other organs and tissues. This can be explained by two factors. First, deep learning techniques tend to show poor performances at the segmentation of relatively small objects compared to the size of the full image. Second, due to the complexity of vascular trees and the small size of vessels, it is challenging to obtain the amount of annotated training data typically needed by deep learning methods. To address these problems, we propose a novel annotation-efficient deep learning vessel segmentation framework. The framework avoids pixel-wise annotations, only requiring weak patch-level labels to discriminate between vessel and non-vessel 2D patches in the training set, in a setup similar to the CAPTCHAs used to differentiate humans from bots in web applications. The user-provided weak annotations are used for two tasks: 1) to synthesize pixel-wise pseudo-labels for vessels and background in each patch, which are used to train a segmentation network, and 2) to train a classifier network. The classifier network allows to generate additional weak patch labels, further reducing the annotation burden, and it acts as a noise filter for poor quality images. We use this framework for the segmentation of the cerebrovascular tree in Time-of-Flight angiography (TOF) and Susceptibility-Weighted Images (SWI). The results show that the framework achieves state-of-the-art accuracy, while reducing the annotation time by ~77% w.r.t. learning-based segmentation methods using pixel-wise labels for training.
First Quantized Theory of the Photon
Creators: name: Wang, Zhi-Yong
name: Xiong, Cai-Dong
name: Keller, Ole
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In near-field optics and optical tunneling theory, photon wave mechanics, i.e., the first quantized theory of the photon, allows us to address the spatial field localization problem in a flexible manner which links smoothly to classical electromagnetics. In this letter, photon wave mechanics is developed in a rigorous and unified way, based on which field quantization is obtained in a new way.
description: Detailed version by adding the last paragraph as well as Appendix A and B
Narrowband inverse Compton scattering x-ray sources at high laser intensities
Creators: name: Seipt, D.
name: Rykovanov, S.
name: Surzhykov, A.
name: Fritzsche, S.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Ab initio Wannier-function-based correlated calculations of Born effective charges of crystalline Li$_{2}$O and LiCl
Creators: name: Sony, Priya
name: Shukla, Alok
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper we have used our recently developed ab initio Wannier-function-based methodology to perform extensive Hartree-Fock and correlated calculations on Li$_{2}$O and LiCl to compute their Born effective charges. Results thus obtained are in very good agreement with the experiments. In particular, for the case of Li$_{2}$O, we resolve a controversy originating in the experiment of Osaka and Shindo {[}Solid State Commun. 51 (1984) 421] who had predicted the effective charge of Li ions to be in the range 0.58--0.61, a value much smaller compared to its nominal value of unity, thereby, suggesting that the bonding in the material could be partially covalent. We demonstrate that effective charge computed by Osaka and Shindo is the Szigeti charge, and once the Born charge is computed, it is in excellent agreement with our computed value. Mulliken population analysis of Li$_{2}$O also confirms ionic nature of the bonding in the substance.
description: 11 pages, 1 figure. To appear in Phys. Rev. B (Feb 2008)
Bound electron g-factor measurements at the HITRAP facility
Creators: name: Wiesel, M.
name: Birkl, G.
name: Ebrahimi, S.
name: Von Lindenfels, D.
name: Martin, A.
name: Quint, W.
name: Vogel, M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
The role of black hole mass in quasar radio activity
Creators: name: Metcalf, R. B.
name: Magliocchetti, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use a homogeneous sample of about 300, 0.3
description: 10 pages, 10 figures, minor changes to match the accepted version
2.5_Larsen: Total Control - Advanced integrated control of large-scale wind power plants
Creators: name: G.C. Larsen
Publisher: name: Zenodo
Year: 2019
Subjects: Wind farm control; Wind turbine control; Optimized; Power production; Wind turbine loads; Grid support

description: Current state of the art wind power plant (WPP) controllers operate wind turbines (WTs) independently as individual machines, thus dispatching the WTs’ set points in an equal manner to all of them. This approach is safe and reliable but far from optimal. To achieve optimal WPP control, three aspects need to be addressed: - Maximizing the yield (power production) balanced against turbine mechanical loading and electricity price - Enhancing WPP capability to provide ancillary services (primary, secondary, and tertiary reserves), and - Reducing operating costs (i.e. reduced fatigue load degradation of WTs and O&M requirement) over the lifetime of the WPP. The goal of TotalControl is to move the WPP controller design philosophy from individual optimization of WT operation to a coordinated optimization of the overall WPP performance. The TotalControl project aims to achieve this by developing and validating advanced integrated WPP/WT control schemes conditioned on grid demands, in which all essential interactions between the WPP WTs are accounted for including production, load and O&M aspects. In order to develop and test the different WPP controllers, a range of high-fidelity and medium-fidelity simulation models are used. These models are already available in the consortium, but will be thoroughly validated against full-scale measurements in the Lillgrund WPP. The TotalControl WPP control approach is built on a hierarchy of controllers, each reacting at different time scales and control time steps. At the slowest control level the WPP is quasi-statically adapting its WT active and reactive power set points as well as WT yaw angles. This controller adapts the WPP to slowly changing environmental conditions and market elements. A second control level is the WT controller accepting power set points from the quasi-steady control levels. Finally, a fast WPP controller that responds dynamically to faster events (turbulent gusts, requests for ancillary services, etc.) and uses feedback from the WTs is being considered. The dynamic WPP controller also contains a direct control level related to the WPP internal power grid (e.g. STATCOM devices, power converters). The talk mainly describes the current state of the project, especially the measurement campaign currently underway at Lillgrund, the turbine control aspects being implemented at the 7MW Samsung turbine at Levenmouth, and the initial works on the high-resolution modelling. The project is running for a 4-year period (starting January 2018) and has 8 partners representing academia, wind farm developers and wind turbine manufactures.
Control issues of KKLT
Creators: name: Gao, Xin
name: Hebecker, Arthur
name: Junghans, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze to which extent the KKLT proposal for the construction of de Sitter vacua in string theory is quantitatively controlled. Our focus is on the quality of the 10d supergravity approximation. As our main finding, we uncover and quantify an issue which one may want to call the "singular-bulk problem". In particular, we show that, requiring the curvature to be small in the conifold region, one is generically forced into a regime where the warp factor becomes negative in a significant part of the Calabi-Yau orientifold. This implies true singularities, independent of the familiar, string-theoretically controlled singularities of this type in the vicinity of O-planes. We also discuss possible escape routes as well as other control issues, related to the need for a large tadpole and hence for a complicated topology.
description: 36 pages, 4 figures. v2: referencing improved. v3: more details added
An Analysis of Fundamental Waffle Mode in Early AEOS Adaptive Optics Images
Creators: name: Makidon, R. B.
name: Sivaramakrishnan, A.
name: Perrin, M. D.
name: Roberts,, L. C.
name: Soummer, R.
name: Oppenheimer, B. R.
name: Graham, J. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Adaptive optics (AO) systems have significantly improved astronomical imaging capabilities over the last decade, and are revolutionizing the kinds of science possible with 4-5m class ground-based telescopes. A thorough understanding of AO system performance at the telescope can enable new frontiers of science as observations push AO systems to their performance limits. We look at recent advances with wave front reconstruction (WFR) on the Advanced Electro-Optical System (AEOS) 3.6 m telescope to show how progress made in improving WFR can be measured directly in improved science images. We describe how a "waffle mode" wave front error (which is not sensed by a Fried geometry Shack-Hartmann wave front sensor) affects the AO point-spread function (PSF). We model details of AEOS AO to simulate a PSF which matches the actual AO PSF in the I-band, and show that while the older observed AEOS PSF contained several times more waffle error than expected, improved WFR techniques noticeably improve AEOS AO performance. We estimate the impact of these improved WFRs on H-band imaging at AEOS, chosen based on the optimization of the Lyot Project near-infrared coronagraph at this bandpass.
description: 15 pages, 11 figures, 1 table; to appear in PASP, August 2005
Progress of laser cooling of relativistic Li-like C$^{3+}$ ion beams at the CSRe
Creators: name: Wen, W. Q.
name: Wang, H. B.
name: Huang, Z. K.
name: Zhang, D. C.
name: Hai, B.
name: Zhu, X. L.
name: Li, J.
name: Mao, L. J.
name: Yang, J. C.
name: Yuan, Y. J.
name: Loeser, M.
name: Siebold, M.
name: Schramm, U.
name: Boine-Frankenheim, O.
name: Eidam, L.
name: Winters, Danyal
name: Birkl, G.
name: Rein, B.
name: Walther, T.
name: Zhu, J. F.
name: Bussmann, M.
name: Ma, X.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Surgery on links with unknotted components and three-manifolds
Creators: name: Guo, Yu
name: Yu, Li
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57M27

description: It is shown that any closed three-manifold M obtained by integral surgery on a knot in the three-sphere can always be constructed from integral surgeries on a 3-component link L with each component being an unknot in the three-sphere. It is also interesting to notice that infinitely many different integral surgeries on the same link L could give the same three-manifold M.
description: 10 pages, 8 figures
On a classical scheme in noncommutative multiparameter ergodic theory
Creators: name: Skalski, Adam
Publisher: name: arXiv
Year: 2006
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46L51; 47A35

description: In the first part of the paper the natural scheme for proving noncommutative individual ergodic theorems for multiple sequences is described and applied to obtain results on unrestricted convergence of multiaverages. In the second part convergence of ergodic averages induced by several maps satisfying specific recurrence relations, including so-called Multi Free Group Partial Sums, is proved. This is the multiindexed version of results obtained earlier jointly with V.I.Chilin and S.Litvinov.
description: 14 pages
Supplementary material for genetic links between metabolic syndrome and osteoarthritis: insights from cross-trait analysis
Creators: name: Huang, Ji-Xiang
name: Xu, Shu-Zhen
name: Tian, Tian
name: Wang, Jing
name: Jiang, Ling-Qiong
name: He, Tian
name: Meng, Shi-Yin
name: Ni, Jing
name: Pan, Hai-Feng
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 420299
subject: Epidemiology not elsewhere classified

description: Background: Previous observational studies have indicated a bidirectional association between metabolic syndrome (MetS) and osteoarthritis (OA). However, it remains unclear whether these bidirectional associations reflect causal relationships or shared genetic factors, and the underlying biological mechanisms of this association are not fully understood. Methods: Leveraging summary statistics from genome-wide association studies (GWASs) conducted by the UK Biobank and the Glucose and Insulin-related Traits Consortium (MAGIC), we performed global genetic correlation analyses, genome-wide cross-trait meta-analyses, and a bidirectional two-sample Mendelian randomization analyses using summary statistics from GWASs to comprehensively assess the relationship of MetS and OA.Results: We first detected an extensive genetic correlation between MetS and OA (rg=0.393, P=1.52×10-18), which was consistent in four MetS components, including waist circumference, triglycerides, hypertension and high-density lipoprotein cholesterol and OA with rg ranging from -0.229 to 0.490. We then discovered 32 variants jointly associated with MetS and OA through multi-trait Analysis of GWAS. Co-localization analysis founded 12 genes shared between MetS and OA, with functional implications in several biological pathways. Finally, MR analysis suggested genetic liability to MetS significantly increased the risk of OA, but no reverse causality was found.Conclusion: Our results illustrate a common genetic architecture, pleiotropic loci, as well as causality between MetS and OA, potentially enhancing our knowledge of high comorbidity and genetic processes that overlap between the two disorders.
CONHECENDO UM POUCO SOBRE HIV E AIDS: dicas para pessoas com e sem HIV
Creators: name: da Silva Teixeira Gomes, Loren Scarlatt
name: Britto, Alan Messala A.
Publisher: name: Zenodo
Year: 2024
Subjects: HIV
Síndrome da Imunodeficiência Adquirida

description: Produto técnico do tipo material didático ou instrucional, no formato de folder, desenvolvido a partir do estudo realizado no Hospital Universitário do Estado do Rio de Janeiro, contendo informações pertinentes sobre a temática HIV/aids para divulgação entre os pacientes atendidos ambulatorialmente no referido hospital. Nele contém informações sobre a definição de aids e HIV; a forma de transmissão do HIV e formas como não se transmite; as formas de prevenção; definição de PEP e PrEP; as formas de diagnósticos; como realizar o tratamento após o contágio; e orientação a procurar uma unidade de saúde caso apresente algum sintoma que possa estar relacionado com a infecção pelo HIV.
A Targeted Attack on Black-Box Neural Machine Translation with Parallel Data Poisoning
Creators: name: Xu, Chang
name: Wang, Jun
name: Tang, Yuqing
name: Guzman, Francisco
name: Rubinstein, Benjamin I. P.
name: Cohn, Trevor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: As modern neural machine translation (NMT) systems have been widely deployed, their security vulnerabilities require close scrutiny. Most recently, NMT systems have been found vulnerable to targeted attacks which cause them to produce specific, unsolicited, and even harmful translations. These attacks are usually exploited in a white-box setting, where adversarial inputs causing targeted translations are discovered for a known target system. However, this approach is less viable when the target system is black-box and unknown to the adversary (e.g., secured commercial systems). In this paper, we show that targeted attacks on black-box NMT systems are feasible, based on poisoning a small fraction of their parallel training data. We show that this attack can be realised practically via targeted corruption of web documents crawled to form the system's training data. We then analyse the effectiveness of the targeted poisoning in two common NMT training scenarios: the from-scratch training and the pre-train & fine-tune paradigm. Our results are alarming: even on the state-of-the-art systems trained with massive parallel data (tens of millions), the attacks are still successful (over 50% success rate) under surprisingly low poisoning budgets (e.g., 0.006%). Lastly, we discuss potential defences to counter such attacks.
description: In Proceedings of the 2021 World Wide Web Conference (WWW 2021)
Vientiane New World: A Modern Dream and its Impact on Don Chan Community Livelihoods
Creators: name: Sivilay Keobountham
Publisher: name: Center for Research on Plurality in the Mekong Region (CERP)
Year: 2019
Subjects: Vientiane
urban development
resettlement
sustainable livelihood

description: Journal of Mekong Societies, 15, 2, 18-37
Progress on Schottky mass spectrometry of $^{152}$Sm projectile fragments at ESR
Creators: name: Yan, Xinliang
name: Litvinov, Y.
name: Blaum, K.
name: Bosch, F.
name: Brandau, C.
name: Chen, L.
name: Geissel, H.
name: Knöbel, R.
name: Kozhuharov, C.
name: Kurcewicz, J.
name: Litvinov, S.
name: Münzenberg, G.
name: Nociforo, C.
name: Nolden, F.
name: Plaß, W.
name: Sanjari, S.
name: Scheidenberger, C.
name: Steck, M.
name: Sun, B.
name: Tu, X. L.
name: Weick, H.
name: Winckler, N.
name: Winkler, M.
name: Xu, H. S.
name: Zhang, Y. H.
name: Zhou, X. H.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Monopole Fluctuation of the CMB and its Gauge Invariance
Creators: name: Baumgartner, Sandra
name: Yoo, Jaiyul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The standard theoretical description $Θ(\hat n)$ of the observed CMB temperature anisotropies is gauge-dependent. It is, however, well known that the gauge mode is limited to the monopole and the higher angular multipoles $Θ_l$ ($l\geq1$) are gauge-invariant. Several attempts have been made in the past to properly define the monopole fluctuation, but the resulting values of the monopole power $C_0$ are infinite due to the infrared divergences. The infrared divergences arise from the contribution of the uniform gravitational potential to the monopole fluctuation, in violation of the equivalence principle. Here we present the gauge-invariant theoretical description of the observed CMB temperature anisotropies and compute the monopole power $C_0=1.66\times10^{-9}$ in a $Λ$CDM model. While the gauge-dependence in the standard calculations originates from the ambiguity in defining the hypersurface for the background CMB temperature $\bar T$ today, it is in fact well defined and one of the fundamental cosmological parameters. We argue that once the cosmological parameters are chosen, the monopole fluctuation can be unambiguously inferred from the angle-average of the observed CMB temperature, making it a model-dependent ''observable''. Adopting simple approximations for the anisotropy formation, we derive a gauge-invariant analytical expression for the observed CMB temperature anisotropies to study the CMB monopole fluctuation and the cancellation of the uniform gravitational potential contributions on large scales.
description: 17 pages, 4 figures, accepted for publication in PRD
Dynamic nuclear polarization of a single charge-tunable InAs/GaAs quantum dot
Creators: name: Eble, Benoît
name: Krebs, Olivier
name: Lemaître, Aristide
name: Kowalik, Katarzyna
name: Kudelski, Arkadiusz
name: Voisin, Paul
name: Urbaszek, Bernhard
name: Marie, Xavier
name: Amand, Thierry
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report on the dynamic nuclear polarization of a single charge-tunable self-assembled InAs/GaAs quantum dot in a longitudinal magnetic field of $\sim$0.2T. The hyperfine interaction between the optically oriented electron and nuclei spins leads to the polarization of the quantum dot nuclei measured by the Overhauser-shift of the singly-charged excitons ($X^{+}$ and $X^{-}$). When going from $X^{+}$ to $X^{-}$, we observe a reversal of this shift which reflects the average electron spin optically written down in the quantum dot either in the $X^{+}$ state or in the final state of $X^{-}$ recombination. We discuss a theoretical model which indicates an efficient depolarization mechanism for the nuclei limiting their polarization to ~10%.
description: 4+ pages, 3 figures