cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Beam test data analysis and resolution studies for the Belle II Silicon Vertex Detector
Creators: name: Würkner, Benedikt
Publisher: name: TU Wien
Year: 2015
Subjects: subject: Belle II
subject: Siliziumvertexdetektor
subject: Belle II
subject: silicon vertex detector

description: Das Institut für HochEnergiePHYsik (HEPHY) der Österreichische Akademie der Wissenschaften beteiligt sich an etlichen Hochenergiephysik Experimenten weltweit. Eines dieser Experimente ist Belle II das am KEKB Teilchenbeschleuniger in Tsu- kuba, Japan stationiert ist. Belle II ist das Upgrade des Belle Experiments, das von 1999 bis 2009 erfolgreich lief und den experimentellen Nachweis zur CP-Verletzung lieferte. Das Upgrade des Beschleunigers auf eine 40-fach höhere Intensität benötigt auch eine gleichzeitige, entsprechende Verbesserung der Detektorleistung um mit der erhöhten Anzahl an Teilchen umgehen zu können. Ein Teil dieses verbesserten Detektors ist der SVD, der innerste Spurdetektor, für den unter anderem Sensor Layouts, Ausleseelektronik (sowohl Design als auch Produktion), Ladder Montage und Sensortests vom HEPHY beigesteuert werden. Als Teil meiner Masterarbeit habe ich Verbesserungen und neue Funktionalitäten für die Datenbank, die zur Verwaltung aller Teile des Detektors verwendet wird, beigesteuert. Desweiteren habe ich die Auflösung der im Detektor verwendeten Silizium-Streifen-Detektoren untersucht. Um diese durchzuführen nahm ich an Strahltests am SPS, CERN teil. Hierfür wurden die Detektoren mit einem Strahlteleskop, dem AIDA Teleskop untersucht und ihre Auflösung bestimmt.
description: The Institute of High Energy PHYsics (HEPHY), which is a part of the Austrian Academy of Sciences (ÖAW), contributes to several high energy physics experiments around the world. One of these experiments is Belle II stationed at the KEKB particle accelerator in Tsukuba, Japan. Belle II is the upgrade to the Belle experiment which ran successfully from 1999 till 2009 and experimentally confirmed CP-violation. The upgrade of the accelerator to a 40 times higher luminosity requires an equal increase in detector performance to cope with the higher particle rate. One part of the upgraded detector is the SVD, the innermost vertex tracking detector, with sensor layout, readout electronics design and manufacturing, ladder assembly and sensor testing being contributed by HEPHY. As part of my masters thesis I improved and extended the database keeping track of all the parts that will make up the detector as well as determining the resolution of the silicon strip detectors that will be used in the SVD. To this aim beam test at the SPS at CERN were performed, where the sensors were measured with a beam telescope, the AIDA telescope, to gain insight on the sensor resolution.
High-Fidelity Control of Superconducting Qubits Using Direct Microwave Synthesis in Higher Nyquist Zones
Creators: name: Kalfus, William D.
name: Lee, Diana F.
name: Ribeill, Guilhem J.
name: Fallek, Spencer D.
name: Wagner, Andrew
name: Donovan, Brian
name: Ristè, Diego
name: Ohki, Thomas A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Control electronics for superconducting quantum processors have strict requirements for accurate command of the sensitive quantum states of their qubits. Hinging on the purity of ultra-phase-stable oscillators to upconvert very-low-noise baseband pulses, conventional control systems can become prohibitively complex and expensive when scaling to larger quantum devices, especially as high sampling rates become desirable for fine-grained pulse shaping. Few-GHz radio-frequency digital-to-analog converters (RF DACs) present a more economical avenue for high-fidelity control while simultaneously providing greater command over the spectrum of the synthesized signal. Modern RF DACs with extra-wide bandwidths are able to directly synthesize tones above their sampling rates, thereby keeping the system clock rate at a level compatible with modern digital logic systems while still being able to generate high-frequency pulses with arbitrary profiles. We have incorporated custom superconducting qubit control logic into off-the-shelf hardware capable of low-noise pulse synthesis up to 7.5 GHz using an RF DAC clocked at 5 GHz. Our approach enables highly linear and stable microwave synthesis over a wide bandwidth, giving rise to high-resolution control and a reduced number of required signal sources per qubit. We characterize the performance of the hardware using a five-transmon superconducting device and demonstrate consistently reduced two-qubit gate error (as low as 1.8%) which we show results from superior control chain linearity compared to traditional configurations. The exceptional flexibility and stability further establish a foundation for scalable quantum control beyond intermediate-scale devices.
description: 12 pages, 9 figures
A comparative study of overlap and staggered fermions in QCD
Creators: name: Dürr, S.
name: Hoelbling, Ch.
name: Wenger, U.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We perform a comparative study of the infrared properties of overlap and staggered fermions in QCD. We observe that the infrared spectrum of the APE/HYP improved staggered Dirac operator develops a four-fold near-degeneracy and is in quantitative agreement with the infrared spectrum of the overlap operator. The near-degeneracy allows us to identify the zero modes of the staggered operator and we find that the number of zero modes is in line with the topological index of the overlap operator.
description: Talk presented at Lattice2004(chiral), Fermilab, June 21-26, 2004, 3 pages, 2 figures
Additional file 3 of Quality of life among caregivers of people with end-stage kidney disease managed with dialysis or comprehensive conservative care
Creators: name: Shah, Karan K.
name: Fliss E. M. Murtagh
name: McGeechan, Kevin
name: Crail, Susan M.
name: Burns, Aine
name: Morton, Rachael L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: Science Policy

description: Additional file 3. Item 1. STROBE Statement: checklist of items that should be included in reports of observational studies. STROBE checklist for cross-sectional studies for adequate and complete reporting of the study.Item 2. SF-12: Questionnaire (converted to SF-6D utilities). Administered to the caregivers. Item 3. Caregiver Experience Scale. Administered to the caregivers. Item 4. Background questions: (Caregivers). Administered to the caregivers.
Comparison between overlap and twisted mass fermions towards the chiral limit
Creators: name: Bietenholz, W.
name: Capitani, S.
name: Chiarappa, T.
name: Hasenbusch, M.
name: Jansen, K.
name: Nagai, K. -I.
name: Papinutto, M.
name: Scorzato, L.
name: Shcheredin, S.
name: Shindler, A.
name: Urbach, C.
name: Wenger, U.
name: Wetzorke, I.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compare overlap fermions, which are chirally invariant, and Wilson twisted mass fermions in the approach to the chiral limit. Our quenched simulations reveal that with both formulations of lattice fermions pion masses of O(250 MeV) can be reached in practical simulations. Our comparison is done at a fixed lattice spacing a=0.123 fm. Several quantities are measured, such as hadron masses and pseudoscalar decay constants.
description: Lattice2004(chiral)
title: Schadenreservierung bei langer Abwicklungsdauer
Creators: name: Seirlehner, Mona
Publisher: name: TU Wien
Year: 2015
Subjects: subject: Schadernreserve
subject: Chain ladder
subject: claim reserve
subject: chain ladder

description: In dieser Diplomarbeit habe ich mich mit langabwickelnden Sparten und den aus der langen Abwicklungsdauer resultierenden Herausforderungen bei der Schadenreservierung befasst. Es werden Gründe für die lange Abwicklungsdauer gesucht und behandelt wie sich die lange Abwicklungsdauer auf die Reservebestimmung auswirkt. Es wird beschrieben wie die Geschäftszweige aufsichtsrechtlich aufzuteilen sind. Durch Vergleich der jeweiligen Chain-Ladder Abwicklungsfaktoren werden die langabwickelnden Sparten bestimmt. Innerhalb dieser Sparten wird untersucht, ob man hier noch genauer differenzieren kann. So erhält man die Unterteilung in Sach- und Personenschäden. Die Auswirkung auf die Reserven einer solchen Unterteilung wird dann anhand eines Beispieles veranschaulicht. Im Folgenden wird auf das Problem der unvollständigen Information im Schadendreieck eingegangen und Methoden zur Tail-Schätzung vorgestellt. Weiters wird eine Reservebestimmungsmethode vorgestellt, die getrennt Reserven für den IBNR- und IBNER-Anteil bestimmt. Am Ende wird noch genauer auf den Sonderfall der Renten in der Sachversicherung eingegangen. Hier wird behandelt, wie Renten aufsichtsrechtlich zu betrachten sind und welche Methoden es dafür gibt.
description: This diploma thesis analyses long-tail line of business and the challenges in claims reserving resulting from longer settlement times. Furthermore reasons for the long settlement times are investigated. An allocation according to supervisory law is implemented. Using that allocation and the respecting chain-ladder development factors long-tail lines of business are determined. A more detailed classification for the affected lines of business in property claims and injury claims is presented and its effects on the reserves are illustrated. Regarding the problem of incomplete claims information methods for the estimation of tail development factors are presented. Additionally an approach for claims reserving is introduced that distinguishes between the IBNR- and the IBNER-part of the overall reserve. Also annuities stemming from non-life contracts are covered and methods for their treatment in compliance with supervisory law are presented.
On the topological immunity of corner states in two-dimensional crystalline insulators
Creators: name: van Miert, Guido
name: Ortix, Carmine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A higher-order topological insulator (HOTI) in two dimensions is an insulator without metallic edge states but with robust zero-dimensional topological boundary modes localized at its corners. Yet, these corner modes do not carry a clear signature of their topology as they lack the anomalous nature of helical or chiral boundary states. Here, we demonstrate using immunity tests that the corner modes found in the breathing kagome lattice represent a prime example of a mistaken identity. Contrary to previous theoretical and experimental claims, we show that these corner modes are inherently fragile: the kagome lattice does not realize a higher-order topological insulator. We support this finding by introducing a criterion based on a corner charge-mode correspondence for the presence of topological midgap corner modes in n-fold rotational symmetric chiral insulators that explicitly precludes the existence of a HOTI protected by a threefold rotational symmetry.
description: 10 pages, 5 figures. Accepted for publication in NPJ Quantum Materials
Sampling on networks: estimating spectral centrality measures and their impact in evaluating other relevant network measures
Creators: name: Ruggeri, Nicolò
name: De Bacco, Caterina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We perform an extensive analysis of how sampling impacts the estimate of several relevant network measures. In particular, we focus on how a sampling strategy optimized to recover a particular spectral centrality measure impacts other topological quantities. Our goal is on one hand to extend the analysis of the behavior of TCEC [Ruggeri2019], a theoretically-grounded sampling method for eigenvector centrality estimation. On the other hand, to demonstrate more broadly how sampling can impact the estimation of relevant network properties like centrality measures different than the one aimed at optimizing, community structure and node attribute distribution. Finally, we adapt the theoretical framework behind TCEC for the case of PageRank centrality and propose a sampling algorithm aimed at optimizing its estimation. We show that, while the theoretical derivation can be suitably adapted to cover this case, the resulting algorithm suffers of a high computational complexity that requires further approximations compared to the eigenvector centrality case.
description: 8 pages, 5 figures
Effect of nonuniform hole-content distribution within the interlayer pair-tunneling mechanism of layered HTSC
Creators: name: Angilella, G. G. N.
name: Pucci, R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The interlayer pair-tunneling (ILT) mechanism for high-$T_c$ superconductivity is able to predict the dependence of the (optimal) critical temperature Tc on the number of layers n within an homologous series of layered cuprate oxides. We generalize the mean-field procedure employed to evaluate Tc within an extended in-plane Hubbard model in presence of ILT, developed for a bilayer complex (n = 2), to the case of n = 3, 4 inequivalent superconducting layers. As a function of doping, we show how a nonuniform hole-content distribution among different layers affects Tc. In particular, depending on doping, the onset of superconductivity may be ruled by inner or outer layers. The latter result may be related to recent experimental data of Tc as a function of pressure in Tl- and Bi-based layered superconductors.
Advances in Generalized Parton Distribution Study
Creators: name: Radyushkin, A. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The basic properties of generalized parton distributions (GPDs) and some recent applications of GPDs are discussed
description: Talk given at the Workshop ``Continuous Advances in QCD 2004'', Minneapolis, May 13-16, 2004
Double Soft Theorem for Generalised Biadjoint Scalar Amplitudes
Creators: name: Abhishek, Md.
name: Hegde, Subramanya
name: Jatkar, Dileep P.
name: Saha, Arnab Priya
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study double soft theorem for the generalised biadjoint scalar field theory whose amplitudes are computed in terms of punctures on $\mathbb{CP}^{k-1}$. We find that whenever the double soft limit does not decouple into a product of single soft factors, the leading contributions to the double soft theorems come from the degenerate solutions, otherwise the non degenerate solutions dominate. Our analysis uses the regular solutions to the scattering equations. Most of the results are presented for $k=3$ but we show how they generalise to arbitrary $k$. We have explicit analytic results, for any $k$, in the case when soft external states are adjacent.
description: Some references are added. Elaborating the introduction and discussion sections
Additional file 2 of Quality of life among caregivers of people with end-stage kidney disease managed with dialysis or comprehensive conservative care
Creators: name: Shah, Karan K.
name: Fliss E. M. Murtagh
name: McGeechan, Kevin
name: Crail, Susan M.
name: Burns, Aine
name: Morton, Rachael L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: Science Policy

description: Additional file 2: Figure S1. Caregivers/patients flowchart. Flowchart on the number of caregivers included
Protein modification in plant innate immunity
Creators: name: Goritschnig, Sandra
Publisher: name: University of British Columbia
Year: 2011

description: Plant diseases cause major crop losses worldwide. Crop protection strategies enhancing the plants' own defence mechanisms could be a sustainable solution to ensure future food supply. This thesis describes my research effort to better understand the innate defence mechanisms in plants. Specific resistance responses towards invading pathogens are mediated by Resistance (R) proteins. They recognize pathogen-derived molecules and activate signalling cascades, initiating physiological responses to limit pathogen spread in infected cells while minimizing harmful effects on the rest of the plant. We use the unique gain-of-function R gene snd as a tool to identify components of resistance signalling in Arabidopsis thaliana. In a screen for suppressors of snc7-mediated constitutive resistance, we identified a number of modifier of snd (mos) mutants. My thesis focuses on the identification and characterization of mos5 and mos8. Both mutations partially suppress sndassociated morphological phenotypes and revert susceptibility to virulent pathogens to wild type levels. mos5 contains a deletion in one of two ubiquitin activating enzyme genes in Arabidopsis. The mutation in mos5 lies in a putative binding domain, potentially disrupting interaction with downstream ubiquitin acceptors. The mos5 single mutant displays enhanced susceptibility to virulent bacteria, as well as to bacteria carrying the effector protease AvrRpt2, indicating a role of ubiquitination in both specific and basal resistance. A mutation in the mos5 homolog UBA2 does not affect resistance, however, a double mutant mos5 uba2 is lethal, indicating that the two genes are partially redundant. mos8 is allelic to enhanced response to abscisic acid 1 (eral), which encodes the beta subunit of protein farnesyltransferase. Mutations in the gene are known to affect development and abscisic acid signalling. mos8 displays enhanced susceptibility to virulent and avirulent pathogens and acts additively with NPR1. Defects in geranylgeranylation, a protein modification similar to farnesylation, do not affect resistance responses against virulent or avirulent pathogens. Taken together, my data reveals the importance of post-translational modification of yet to be identified regulatory proteins in plant innate immunity. Further research will aim at unravelling the mechanisms by which mos5 and mos8 affect resistance signalling.
title: Dynamic User Profiling for Search Personalisation
Creators: name: Vu, Thanh
Publisher: name: The Open University
Year: 2017

description: The performance of a personalised search system largely depends upon the ability to build user profiles which accurately capture the user's search interests. However, many approaches to user profiling have neglected the dynamic nature of the user's search interests. That is, a user's search interests typically change in response to their interactions with the search system during the search period. Therefore, a profile built for previous searches might not reflect that user's current search interests. A widely used type of profile represents the topical interests of the user. In these cases, a typical approach is to build a user profile using topics discussed in documents which the user has found relevant, and where the topics are obtained from a human-generated ontology or directory. However, a key limitation of these approaches is that many documents may not contain the topics covered in the ontology. Moreover, the human-generated ontology requires manual effort to determine the correct categories for each document. In this research, we address these problems by proposing novel techniques for dynamically building user profiles which capture the user's search interests changing over time. Instead of using a human-generated ontology, we use a topic modelling technique (Latent Dirichlet Allocation) for unsupervised extraction of the topics from documents. To dynamically build user profiles, we make two important assumptions. First, that the group of users with whom a user shares a set of common interests may be different depending upon the particular topic of interest. Second, the more recently clicked/relevant documents tell us more about the user's current search interests. To test these assumptions, we develop and implement dynamic user profiles, and then evaluate them on two search personalisation tasks. Our first chosen task is personalising search results returned by a Web search engine, and the second is the task of personalising query suggestions made by an Intranet search engine. We found that dynamic user profiles can significantly improve the ranking quality over well-established baselines.
Light Hadron Spectrum, Renormalization Constants and Light Quark Masses with Two Dynamical Fermions
Creators: name: Becirevic, D.
name: Boucaud, P.
name: Gimenez, V.
name: Lubicz, V.
name: Martinelli, G.
name: Mescia, F.
name: Simula, S.
name: Tarantino, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The results of a preliminary partially quenched (N_f=2) study of the light hadron spectrum, renormalization constants and light quark masses are presented. Numerical simulations are carried out with the LL-SSOR preconditioned Hybrid Monte Carlo with two degenerate dynamical fermions, using the plaquette gauge action and the Wilson quark action at beta = 5.8. Finite volume effects have been investigated employing two lattice volumes: 16^3 x 48 and 24^3 x 48. Configurations have been generated at four values of the sea quark mass corresponding to M_{PS}/M_V ~ 0.6 - 0.8.
description: 3 pages, 3 figures, Lattice2004(spectrum)
Additional file 1 of Beta-blocker efficacy across different cardiovascular indications: an umbrella review and meta-analytic assessment
Creators: name: Ziff, Oliver J.
name: Samra, Monica
name: Howard, James P.
name: Bromage, Daniel I.
name: Ruschitzka, Frank
name: Francis, Darrel P.
name: Kotecha, Dipak
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy

description: Additional file 1.
Additional file 1 of Quality of life among caregivers of people with end-stage kidney disease managed with dialysis or comprehensive conservative care
Creators: name: Shah, Karan K.
name: Fliss E. M. Murtagh
name: McGeechan, Kevin
name: Crail, Susan M.
name: Burns, Aine
name: Morton, Rachael L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: Science Policy

description: Additional file 1: Table S1. SF-6D utility and CES score according to caregiver characteristics and care recipient treatment group. SF-6D utility and CES scores for caregiver sociodemographic characteristic and care recipient treatment type. Hypothesis testing using t-test employed. Table S2. Mean scores and weights of SF-6D and Carer Experience Scale (CES) according to care recipient treatment group. Mean scores and weights for different domains of SF-6D and CES scale provided according to care recipient treatment type. Table S3. Differences in SF-6D utility and CES score based on the type of relationship with the care recipient. ANOVA analysis for the type of relationship variable (three categories - Spouse/Partner, Child, Others) for differences in SF-6D utility and CES score.
VLA and ALMA observations of the lensed radio-quiet quasar SDSS J0924+0219: a molecular structure in a 3 microJy radio source
Creators: name: Badole, S.
name: Jackson, N.
name: Hartley, P.
name: Sluse, D.
name: Stacey, H. R.
name: Vives-Arias, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Karl G. Jansky Very Large Array (VLA) and Atacama Large Millimetre Array (ALMA) observations of SDSS J0924+0219, a z = 1.524 radio-quiet lensed quasar with an intrinsic radio flux density of about 3 micro-Jy. The four lensed images are clearly detected in the radio continuum and the CO(5-4) line, whose centroid is at z = 1.5254 +/- 0.0001, with a marginal detection in the submillimetre continuum. The molecular gas displays ordered motion, in a structure approximately 1--2.5 kpc in physical extent, with typical velocities of 50-100 km/s. Our results are consistent with the radio emission being emitted from the same region, but not with a point source of radio emission. SDSS J0924+0219 shows an extreme anomaly in the flux ratios of the two merging images in the optical continuum and broad emission lines, suggesting the influence of microlensing by stars in the lensing galaxy. We find the flux ratio in the radio, submillimetre continuum and CO lines to be slightly greater than 1 but much less than that in the optical, which can be reproduced with a smooth galaxy mass model and an extended source. Our results, supported by a microlensing simulation, suggest that the most likely explanation for the optical flux anomaly is indeed microlensing.
description: 15 pages, 16 figures
Importance of interorbital charge transfers for the metal-to-insulator transition of BaVS$_3$
Creators: name: Lechermann, Frank
name: Biermann, Silke
name: Georges, Antoine
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The underlying mechanism of the metal-to-insulator transition (MIT) in BaVS$_3$ is investigated, using dynamical mean-field theory in combination with density functional theory. It is shown that correlation effects are responsible for a strong charge redistribution, which lowers the occupancy of the broader \a1g band in favor of the narrower $E_g$ bands. This resolves several discrepancies between band theory and the experimental findings, such as the observed value of the charge-density wave ordering vector associated with the MIT, and the presence of local moments in the metallic phase.
description: improved discussion, new figure, added references
Orbital apex syndrome on initial presentation of giant cell arteritis: a case report and review of the literature
Creators: name: Tsuzuki, S
name: Tsuchiya, H
name: Shoda, H
name: Fujio, K
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Orbital apex syndrome on initial presentation of giant cell arteritis: a case report and review of the literature
An Upper Bound on the Flux Ratio of rho CrB's Companion at 1.6um
Creators: name: Bender, C.
name: Simon, M.
name: Prato, L.
name: Mazeh, T.
name: Zucker, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use high resolution infrared spectroscopy to investigate the 2001 report by Gatewood and colleagues that rho CrB's candidate extrasolar planet companion is really a low-mass star with mass 0.14+-0.05 Msun. We do not detect evidence of such a companion; the upper bounds on the (companion/primary) flux ratio at 1.6 microns are less than 0.0024 and 0.005 at the 90 and 99% confidence levels, respectively. Using the H-band mass-luminosity relationship calculated by Baraffe and colleagues, the corresponding upper limits on the companion mass are 0.11 and 0.15 Msun. Our results indicate that the infrared spectroscopic technique can detect companions in binaries with flux ratios as low as 0.01 to 0.02.
description: 22 pages, 10 figures, accepted for publication in the Astronomical Journal
Revisão por pares aberta: panorama das revistas no campo da saúde
Creators: name: Araujo, Anderson Silva de
name: Teixeira, Rafael
name: Zein, Hikmat
name: Veiga, Viviane
Publisher: name: Zenodo
Year: 2022

description: Apresentação realizada na sessão Pecha Kucha I da 13ª Conferência Lusófona de Ciência Aberta, formato híbrido, de 10 a 12 de outubro de 2022.
Adaptive Multi-Trace Carving for Robust Frequency Tracking in Forensic Applications
Creators: name: Zhu, Qiang
name: Chen, Mingliang
name: Wong, Chau-Wai
name: Wu, Min
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the field of information forensics, many emerging problems involve a critical step that estimates and tracks weak frequency components in noisy signals. It is often challenging for the prior art of frequency tracking to i)achieve a high accuracy under noisy conditions, ii)detect and track multiple frequency components efficiently, or iii)strike a good trade-off of the processing delay versus the resilience and the accuracy of tracking. To address these issues, we propose Adaptive Multi-Trace Carving (AMTC), a unified approach for detecting and tracking one or more subtle frequency components under very low signal-to-noise ratio (SNR) conditions and in near real time. AMTC takes as input a time-frequency representation of the system's preprocessing results (such as the spectrogram), and identifies frequency components through iterative dynamic programming and adaptive trace compensation. The proposed algorithm considers relatively high energy traces sustaining over a certain duration as an indicator of the presence of frequency/oscillation components of interest and track their time-varying trend. Extensive experiments using both synthetic data and real-world forensic data of power signatures and physiological monitoring reveal that the proposed method outperforms representative prior art under low SNR conditions, and can be implemented in near real-time settings. The proposed AMTC algorithm can empower the development of new information forensic technologies that harness very small signals.
$π^+ - π^-$ Asymmetry and the Neutron Skin in Heavy Nuclei
Creators: name: Szczurek, Antoni
name: Pawlowski, Piotr
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In heavy nuclei the spatial distribution of protons and neutrons is different. At CERN SPS energies production of $π^+$ and $π^-$ differs for $pp$, $pn$, $np$ and $nn$ scattering. These two facts lead to an impact parameter dependence of the $π^+$ to $π^-$ ratio in $^{208}Pb + ^{208}Pb$ collisions. A recent experiment at CERN seems to confirm qualitatively these predictions. It may open a possibility for determination of neutron density distribution in nuclei.
description: 6 pages and 2 figures, a talk by A.Szczurek at the international conference MESON2004, June 4-8, Cracow, Poland
Increased risk of end-stage renal disease in patients with systemic sclerosis
Creators: name: Lin, C-Y
name: Su, Y-J
name: Cheng, T-T
name: Wu, C-H
name: Chen, J-F
name: Yu, S-F
name: Chen, Y-C
name: Hsu, C-Y
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Systemic sclerosis (SSc) is a systemic autoimmune disease affecting multiple organs, including the kidneys. There is a lack of long-term renal prognosis studies on patients with SSc. The aim of this study was to assess the risk of end-stage renal disease (ESRD) in patients with SSc. We designed a prospective cohort study based on the National Health Insurance Research Database of Taiwan. Patients with SSc and a non-SSc control group were selected from 1 January 2000 to 31 December 2013. The SSc cohort and control group were matched on the propensity score in a 1:2 ratio. The primary outcome was development of ESRD. Cox proportional hazard regression was performed to assess the effects of SSc on ESRD. After propensity score matching, we enrolled 2012 patients in the SSc group and 4024 patients in the control group. During a mean follow-up of 6.5 years, 86 individuals [SSc group, n = 41 (2.04%); control group, n = 45 (1.12%)] had developed ESRD. The risk of ESRD in the SSc group was approximately two times higher than that in the control group [hazard ratio (HR) = 2.12, 95% confidence interval (CI) 1.39–3.24]. Subgroup analysis revealed that the higher risk of ESRD was predominantly in males (HR = 4.14, 95% CI 1.97–8.71) and the younger population (HR = 7.09, 95% CI 2.31–21.80). There was a significantly higher risk of ESRD among SSc patients than among the general population, with males and younger generations being the most vulnerable groups.
Variations on the Warped Deformed Conifold
Creators: name: Gubser, Steven S.
name: Herzog, Christopher P.
name: Klebanov, Igor R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The warped deformed conifold background of type IIB theory is dual to the cascading $SU(M(p+1))\times SU(Mp)$ gauge theory. We show that this background realizes the (super-)Goldstone mechanism where the U(1) baryon number symmetry is broken by expectation values of baryonic operators. The resulting massless pseudo-scalar and scalar glueballs are identified in the supergravity spectrum. A D-string is then dual to a global string in the gauge theory. Upon compactification, the Goldstone mechanism turns into the Higgs mechanism, and the global strings turn into ANO strings.
description: 15 pages, LaTeX; talk delivered by I.R.K. at Strings '04
title: A Case Study of a School Science Department: A Site for Workplace Learning?
Creators: name: Heighes, Deborah Anne
Publisher: name: The Open University
Year: 2017

description: This descriptive and illuminative case study of one science department in a successful, urban, secondary school in the south of England considers the science department as a site of workplace learning and the experience of beginning teachers in this context. Policy change in initial teacher training (ITT) has given schools a major role in the recruitment of trainees and emphasized the schools’ role in their training. Additionally, there continue to be significant challenges to recruit science specialist teachers despite substantial bursaries. For the purposes of this study, a community of practice of those involved with ITT and beginning teachers was defined: this included six teachers, three beginning teachers, one technician and the University tutor from the higher education institution. Interviews, focus groups, and mentor meetings, field observation notes and scrutiny of relevant documents were used to construct a rich description of the sociocultural milieu. Two interpretivist approaches were used: an inductive phenomenological study of the lived experiences and a deductive approach using a conceptual framework developed from theories of workplace learning. Findings show that there is considerable tension in the mentor’s professional life; the role and the learning needs of the mentors were poorly understood; the ‘community of practice – Beginning teachers’ was not as originally perceived because the mentors were not engaged in a joint endeavour; the perceived value of accountability measures for ITT, Ofsted and performativity measures affected the learning environment for the beginning teachers and there is a dissonance between the values and practices of the workplace learning culture. This has been explored through the lenses of balkanization (Hargreaves and Macmillan, 1992), addictive presentism (Hargreaves, 2010) and Hodkinson and Hodkinson’s model of an expansive/restrictive workplace for teachers (2005). This study may be of interest to those in teacher education and involved with recruitment and retention of science teachers.
Validity and reliability of the Swedish version of the Self-Efficacy for Managing Chronic Disease scale for individuals with systemic sclerosis
Creators: name: Mattsson, M
name: Sandqvist, G
name: Hesselstrand, R
name: Olsson, D
name: Kwakkenbos, L
name: Nordin, A
name: Boström, C
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: To investigate aspects of validity and reliability of the Swedish version of the Self-Efficacy for Managing Chronic Disease (SEMCD-Swe) scale in systemic sclerosis (SSc). A forward–backward translation procedure was used. Content validity was assessed through interviews with 11 people with SSc and 10 healthcare professionals. Construct validity, internal consistency, test–retest reliability, and floor and ceiling effects were evaluated in 104 SSc patients. The content validity of the SEMCD-Swe was interpreted as satisfactory, but some adjustments were made to increase the understanding. Confirmatory factor analysis supported a single-factor structure. Moderate to strong correlations between the SEMCD-Swe and Scleroderma Health Assessment Questionnaire; Multidimensional Assessment of Fatigue; Patient Health Questionnaire-8 (rs = −0.4 to −0.7), and RAND-36 subscales (rs = 0.5 to 0.7) were found. Weak correlations were found between SEMCD-Swe and modified Rodnan skin score; and disease severity of peripheral vascular and lung (rs = −0.1 to −0.2) and kidney (rs = 0.1) systems (Medsger severity scale). Cronbach’s alpha was sufficient (0.85) and corrected item-to-total correlations were good (≥ 0.50). The intraclass correlation coefficient for the total score was sufficient (0.82). No floor or ceiling effects were found. Support for construct validity was indicated, as the SEMCD-Swe in SSc show a single-factor structure and is more strongly associated with pain, fatigue, depressive symptoms, interferences with daily activities, disability, and quality of life than with disease severity. Our results also indicate support for content validity and reliability. However, the responsiveness of the SEMCD-Swe needs to be tested.
X-ray source overdensities in Chandra distant cluster fields: a new probe to map the cosmic tapestry?
Creators: name: Cappelluti, N.
name: Cappi, M.
name: Dadina, M.
name: Malaguti, G.
name: Branchesi, M.
name: D'Elia, V.
name: Palumbo, G. G. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first systematic study of the serendipitous X-ray source density around 10 high z (0.242 sigma per field, and >5 sigma overall) only on scales 8'X8' and peculiar to cluster fields. The blank field fluctuations, i.e. the most sensitive measurements to date of the X-ray cosmic variance on this scale, indicate variations within ~15-25% around the average value. The first marginal evidence that these overdensities increase with cluster redshift is also presented. We speculate that the most likely explanation for what has been observed is that the x-ray sources are AGNs which trace filaments connected to the clusters. Nevertheless other possible explanations such as an ``X-ray Butcher-Oemler'' effect are not ruled out by present results. If the association of the overdensities with large-scale structures and their positive relation with cluster redshift is confirmed, these studies could represent a new, direct, way of mapping the cosmic web and its parameters at high z.
description: 8 pages, 6 figures. Accepted by A&A on 09/08/2004, Final version
Sonographic findings of immunoglobulin G4-related sialadenitis and differences from Sjögren’s syndrome
Creators: name: Liu, Y
name: Wang, Z
name: Ren, L
name: Zeng, Q
name: Bian, W
name: Zhang, Y
name: Fu, J
name: Chen, D
name: Yu, G
name: Zhang, S
name: Li, Z
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 111714 Mental Health
subject: FOS: Health sciences

description: To evaluate ultrasonic features of the major salivary glands in patients with immunoglobulin G4-related sialadenitis (IgG4-RS) and to explore the differences between IgG4-RS and Sjögren’s syndrome (SS). We conducted the study in 150 patients with IgG4-RS and 100 patients with SS. Ultrasonographic variables of the static images of major salivary glands were analysed. An experienced radiologist scored the confidence rating regarding the presence of the characteristic imaging findings using a five-grade rating system. Ultrasonography scores between IgG4-RS and SS were compared. The major salivary glands were significantly larger in patients with IgG4-RS than in the SS group. The main features of ultrasonography of the salivary glands in IgG4-RS were various hypoechoic lesions and increased colour Doppler signalling. In contrast, the major salivary glands in SS exhibited hyperechoic lines and/or spots and obscuration of the gland configuration. The scores of the summarized sonographic characteristics also showed statistically significant differences between the IgG4-RS and SS groups. This study revealed different ultrasonic features of the major salivary glands in patients with IgG4-RS and SS. The scored sonographic features were helpful in differentiating IgG4-RS from SS. Consequently, we suggest that ultrasonography of major salivary glands could be a useful imaging procedure in the evaluation of patients suspected of having IgG4-RS.
Time evolution of the stochastic linear bias of interacting galaxies on linear scales
Creators: name: Simon, Patrick
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We extend the time dependent bias model of Tegmark & Peebles (1998) to predict the large-scale evolution of the stochastic linear bias of different galaxy populations with respect to both the dark matter and each other. The resulting model equations contain a general expression, coined the "interaction term", accounting for the destruction or production of galaxies. This term may be used to model couplings between different populations that lead to an increase or decrease of the number of a galaxies belonging to a population, e.g. passive evolution or merging processes. This is explored in detail using a toy model. In particular, it is shown that the presence of such a coupling may change the evolution of the bias parameter compared to an interaction-free evolution. We argue that the observation of the evolution of the large-scale bias and galaxy number density with wide-field surveys may be used to infer fundamental interaction parameters between galaxy populations, possibly giving an insight in their formation and evolution.
description: 18 pages, 7 figures, minor changes, accepted by A&A
Additional file 1 of Exploring barriers and facilitators to integrated hypertension-HIV management in Ugandan HIV clinics using the Consolidated Framework for Implementation Research (CFIR)
Creators: name: Muddu, Martin
name: Tusubira, Andrew K.
name: Nakirya, Brenda
name: Nalwoga, Rita
name: Semitala, Fred C.
name: Akiteng, Ann R.
name: Schwartz, Jeremy I.
name: Ssinabulya, Isaac
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Statistics
subject: FOS: Mathematics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: FOS: Biological sciences
subject: 60506 Virology

description: Additional file 1. Results related to CFIR constructs that were less significant.
Three Essays on Air Transport Economics
Creators: name: Fu, Xiaowen
Publisher: name: University of British Columbia
Year: 2011

description: This dissertation examines two important issues in the air transport industry. The first one is airline competition in the presence of major Low Cost Carriers (LCCs). The second issue is airports' role in downstream airline competition. These issues are studied in three essays, which are chapter 2 to chapter 4 in this manuscript style dissertation. Essay 1 empirically examines airline competition in the presence of a major LCC, especially in the period when the initial effects of LCC entry are stabilized. Using a panel data front the United States domestic markets, an Almost Ideal Demand System (AIDS) is estimated for carriers competing in the same city pair markets. This enables one to calculate carrier-specific demand equations and identify substitution possibilities between Full Service Airlines (FSAs), as well as substitution between LCCs and FSAs. Competition analysis is carried out by empirically estimating reduced form price equations for LCC and FSA. The study found strong evidence of product differentiation between the services provided by FSAs and LCCs. The average prices being charged by FSAs and LCCs are more sensitive to the competition from airlines of the same type. Airlines with higher market shares (regardless of whether they are FSA or LCC) tend to charge higher prices, indicating effect of market power on pricing. Contrary to most previous research results, this study found that the competition between FSAs is important even in the markets where a major LCC is present. Essay 2 examines how pricing behavior of unregulated airports affect downstream airline competition, especially the competition between airlines offering differentiated services including the case of FSAs vs. LCCs competition. The study found that LCCs suffer more from an identical input price increase than FSAs and are, therefore, more vulnerable to an airport's monopolistic pricing. This implies a reduction of competition in downstream airline markets because in recent years LCCs have been a major source of competition in many airline markets. Essay 3 studies the competitive and welfare implications when an airport offers the option of sharing its concession revenue with airlines. It is found that such revenue sharing allows airlines and airports to internalize positive demand externality, which could lead to substantial welfare gains. However, such practice may cause negative effects to airline competition. In fact, there are cases where an airport can maximize its profit by strategically aligning with dominant airlines. Such airport's strategy would, of course, further strengthen the dominant firm's market power since its market share is larger after revenue sharing. In addition, while sharing concession revenue with airlines an airport may still prefer to increase airport charge.