cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Study of the Time Evolution of Brans-Dicke Parameter and its Role in Cosmic Expansion
Creators: name: Roy, Sudipto
name: Chowdhury, Soumyadip
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The dependence of Brans-Dicke (BD) parameter upon the scalar field, for different cosmological era of the expanding universe, has been explored. The time dependence of the scalar field has been determined and thereby the explicit time dependence of the BD parameter has been obtained. Experimental observations regarding the time dependence of the gravitational constant has been considered for this study. The scale factor, Hubble parameter, deceleration parameter, matter density, gravitational constant and the density parameters for matter and dark energy have been expressed in terms of the BD parameter and its time derivatives, showing its role in cosmic expansion.
description: 9 pages in the present version and 1 table. This version has the same theoretical content as the previous version but with a better mathematical analysis and explanation regarding the time variation of the Brans-Dicke Parameter. 3 more equations have been added. A section, called 'Results', has been added. More data have been calculated and added to the table
VHAKG: A Multi-modal Knowledge Graph Based on Synchronized Multi-view Videos of Daily Activities
Creators: name: Egami, Shusaku
name: Ugai, Takahiro
name: Htun, Swe Nwe Nwe
name: Fukuda, Ken
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.2.4; H.5.1
subject: 68T30

description: Multi-modal knowledge graphs (MMKGs), which ground various non-symbolic data (e.g., images and videos) into symbols, have attracted attention as resources enabling knowledge processing and machine learning across modalities. However, the construction of MMKGs for videos consisting of multiple events, such as daily activities, is still in the early stages. In this paper, we construct an MMKG based on synchronized multi-view simulated videos of daily activities. Besides representing the content of daily life videos as event-centric knowledge, our MMKG also includes frame-by-frame fine-grained changes, such as bounding boxes within video frames. In addition, we provide support tools for querying our MMKG. As an application example, we demonstrate that our MMKG facilitates benchmarking vision-language models by providing the necessary vision-language datasets for a tailored task.
description: 5 pages, 4 figures, accepted by CIKM2024 Resource Track
title: Save our NHS: Literature and the National Health Service
Creators: name: Brown, Ryan
Publisher: name: University of Kent
Year: 2022

description: Save our NHS: Literature and the National Health Service corrects an absence in scholarly work on the cultural history of the NHS and argues for literary dissensus as offering a valuable corrective to deficiencies in the health service. This study contends that popular adulation of the National Health Service (NHS) obscures how the institution is entangled within the political creation of social inequalities. Drawing particularly on Michel Foucault's theorisation of healthcare and medicine as instances of a normative and regulatory biopolitics, this project shows how, throughout its history, the NHS has been defined by power relations that limit the potential field of actions open to patients. This thesis shows how the NHS has worked to maintain dominant paradigms in terms of class, gender, psychology, and sexuality. It has been a regular refrain in the medical humanities that literature offers an important means of challenging the unequal and undemocratic nature of healthcare, and so can improve the practice of medical professionals, as well as patient outcomes. I offer an elaboration of this perspective, although without therapeutic intentions, and argue that the instrumentalist nature of much medical humanities work has a limited understanding of literature's complexity and ambiguity. This study operates with an understanding of literature as offering resistance to the determinative biopolitics of healthcare through its democratic emphasis on social values and practices as a process that ought to be decided collectively. Raymond William's work is especially influential to this thesis's methodology due to his understanding of literature as engaged with responding to and attempting to shape emergent social practices. Twentieth-century British literary history is shown to attest to a regular dissensus against medical power, offering critical accounts of the stultifying and oppressive ways in which healthcare has functioned. At the same time, by closely reading a diverse array of literary texts, attention is given to the ambivalent and at times contradictory nature of these critiques. Literature offers evolving complications, not definitive answers. Consequently, this project argues that literary critiques of the NHS are a key component of ensuring that the institution furthers its egalitarian ambitions as they emphasise an ongoing process to define what health and care should mean and be.
title: Θερμικές κατεργασίες χρωμιοβαναδιούχου χάλυβα
title: Heat treatment of chromium vanadium steel
titleType: AlternativeTitle
Creators: name: Καμίτσης, Νικόλαος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2024
Subjects: Θερμικές κατεργασίες
Χάλυβας 110CrV
Μηχανικές ιδιότητες χάλυβα

description: Η συγκεκριμένη εργασία έχει ως σκοπό την περιγραφή θερμικών κατεργασιών σε χάλυβα 110CrV. Αρχικά γίνεται μια εισαγωγή στους χάλυβες, τη χρησιμότητα τους και την εξέλιξή τους στο χρόνο. Στη συνέχεια παρουσιάζεται μια ταξινόμηση των διαφόρων ειδών χάλυβα σε κατηγορίες ανάλογα με τα διάφορα χαρακτηριστικά τους, όπως είναι η περιεκτικότητα τους σε άνθρακα, οι διαφορετικές χρήσεις που έχουν και τα διαφορετικά κραματικά στοιχεία που περιέχουν. Ακολουθεί μία σύντομη επισκόπηση των θεμελιωδών φυσικών και μηχανικών ιδιοτήτων του χάλυβα, καθώς και σύντομη περιγραφή της επίδρασης που έχουν τα διάφορα κραματικά στοιχεία στις ιδιότητες του χάλυβα. Η παρούσα εργασία αφορά τις διάφορες θερμικές κατεργασίες που χρησιμοποιούνται για τη βελτίωση των ιδιοτήτων του χάλυβα. Έτσι, εξετάζονται θερμικές κατεργασίες όπως είναι η ανόπτηση, η βαφή και η επαναφορά, η διαδικασία που ακολουθείται και η επίδραση τους στη μικροδομή και σε καθορισμένες ιδιότητες του μετάλλου, όπως η σκληρότητα και η αντοχή σε κρούση. Στο πειραματικό μέρος της εργασίας γίνεται αναλυτική περιγραφή των θερμικών κατεργασιών που διεξήχθησαν στα πλαίσια αυτής της εργασίας, των διαδικασιών που ακολουθήθηκαν και του πειραματικού προσδιορισμού συγκεκριμένων ιδιοτήτων των δοκιμίων χάλυβα που χρησιμοποιήθηκαν. Τέλος παρατίθενται τα συμπεράσματα που εξήχθησαν από τα αποτελέσματα των πειραμάτων που πραγματοποιήθηκαν.
Two-dimensional skyrmions and other solitonic structures in confinement-frustrated chiral nematics
Creators: name: Ackerman, Paul J.
name: Trivedi, Rahul P.
name: Senyuk, Bohdan
name: van de Lagemaat, Jao
name: Smalyukh, Ivan I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We explore spatially localized solitonic configurations of a director field, generated using optical realignment and laser-induced heating, in frustrated chiral nematic liquid crystals confined between substrates with perpendicular surface anchoring. We demonstrate that, in addition to recently studied torons and Hopf-fibration solitonic structures (hopfions), one can generate a host of other axially symmetric stable and metastable director field configurations where local twist is matched to the surface boundary conditions through introduction of point defects and loops of singular and nonsingular disclinations. The experimentally demonstrated structures include the so-called "baby-skyrmions" in the form of double twist cylinders oriented perpendicular to the confining substrates where their double twist field configuration is matched to the perpendicular boundary conditions by loops of twist disclinations. We also generate complex textures with arbitrarily large skyrmion numbers. A simple back-of-the-envelope theoretical analysis based on free energy considerations and the nonpolar nature of chiral nematics provides insights into the long-term stability and diversity of these inter-related solitonic field configurations, including different types of torons, cholestric-finger loops, two-dimensional skyrmions, and more complex structures comprised of torons, hopfions, and various disclination loops that are experimentally observed in a confinement-frustrated chiral nematic system.
First detection of sign-reversed linear polarization from the forbidden [O I] 630.03 nm line
Creators: name: de Wijn, A. G.
name: Socas-Navarro, H.
name: Vitas, N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on the detection of linear polarization of the forbidden [O i] 630.03 nm spectral line. The observations were carried out in the broader context of the determination of the solar oxygen abundance, an important problem in astrophysics that still remains unresolved. We obtained spectro-polarimetric data of the forbidden [O i] line at 630.03 nm as well as other neighboring permitted lines with the Solar Optical Telescope of the Hinode satellite. A novel averaging technique was used, yielding very high signal-to-noise ratios in excess of $10^5$. We confirm that the linear polarization is sign-reversed compared to permitted lines as a result of the line being dominated by a magnetic dipole transition. Our observations open a new window for solar oxygen abundance studies, offering an alternative method to disentangle the Ni i blend from the [O i] line at 630.03 nm that has the advantage of simple LTE formation physics.
description: 4 pages, 3 figures, accepted for publication in ApJ
The kinematics of the white dwarf population from the SDSS DR12
Creators: name: Anguiano, Borja
name: Rebassa-Mansergas, Alberto
name: Garcia-Berro, Enrique
name: Torres, Santiago
name: Freeman, Ken
name: Zwitter, Tomaz
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the Sloan Digital Sky Survey Data Release 12, which is the largest available white dwarf catalog to date, to study the evolution of the kinematical properties of the population of white dwarfs in the Galactic disc. We derive masses, ages, photometric distances and radial velocities for all white dwarfs with hydrogen-rich atmospheres. For those stars for which proper motions from the USNO-B1 catalog are available the true three-dimensional components of the stellar space velocity are obtained. This subset of the original sample comprises 20,247 objects, making it the largest sample of white dwarfs with measured three-dimensional velocities. Furthermore, the volume probed by our sample is large, allowing us to obtain relevant kinematical information. In particular, our sample extends from a Galactocentric radial distance $R_{\rm G}=7.8$~kpc to 9.3~kpc, and vertical distances from the Galactic plane ranging from $Z=-0.5$~kpc to 0.5~kpc. We examine the mean components of the stellar three-dimensional velocities, as well as their dispersions with respect to the Galactocentric and vertical distances. We confirm the existence of a mean Galactocentric radial velocity gradient, $\partial\langle V_{\rm R}\rangle/\partial R_{\rm G}=-3\pm5$~km~s$^{-1}$~kpc$^{-1}$. We also confirm North-South differences in $\langle V_{\rm z}\rangle$. Specifically, we find that white dwarfs with $Z>0$ (in the North Galactic hemisphere) have $\langle V_{\rm z}\rangle<0$, while the reverse is true for white dwarfs with $Z<0$. The age-velocity dispersion relation derived from the present sample indicates that the Galactic population of white dwarfs may have experienced an additional source of heating, which adds to the secular evolution of the Galactic disc.
description: Accepted for publication by MNRAS
Minimax density estimation for growing dimension
Creators: name: McDonald, Daniel J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: This paper presents minimax rates for density estimation when the data dimension $d$ is allowed to grow with the number of observations $n$ rather than remaining fixed as in previous analyses. We prove a non-asymptotic lower bound which gives the worst-case rate over standard classes of smooth densities, and we show that kernel density estimators achieve this rate. We also give oracle choices for the bandwidth and derive the fastest rate $d$ can grow with $n$ to maintain estimation consistency.
description: 10 pages; accepted at The 20th International Conference on Artificial Intelligence and Statistics (AISTATS)
Kathryn Deiss and Kristen Totleben. “Co-Mentoring: A Block Approach,” Library Leadership andManagement Journal, v.29, no.2, p. 1-9. February 2015. DOI: https://doi.org/10.5860/llm.v29i2.7122
Creators: name: Totleben, Kristen
name: Deiss, Kathryn
Publisher: name: University of Rochester
Year: 2023
Subjects: classificationCode: 4610
subject: Library and information studies

description: This article discusses a unique approach to a mentoring relationship. Beginning as a traditional mentoring relationship in late 2012, the authors later changed it to a co-mentoring relationship. During the ALA Midwinter Conference’s 2013 President’s Program in which Peter Block was a speaker, the author who was the mentor became re-inspired by his ideas about abundance, leadership, and community and could see powerful applications to the already formed mentoring relationship she had with the author in the mentee role. This article highlights the evolution of a mentoring relationship, transforming it from a traditional hierarchical nature to one of a “commitment to equality, deep self-awareness and intentionality” (Block’s ALA presentation). The authors explore how and why a co-mentoring relationship works for them and how it may be applicable to others interested in sustaining a mentoring relationship. Other discussion includes how this relationship affects careers and lives, with benefits that carry over to the organizations in which they work.
Informativo Mesa Digital
Creators: name: De Araújo, Maria Vitória Pereira
name: De Oliveira, Daniel Coelho
name: Santos, Arthur Saldanha Dos
name: De Podestá, Marcelo
Publisher: name: Zenodo
Year: 2022

description: O informativo “Mesa Digital” é parte de um projeto coordenado pelo Grupo de Estudos de Culturas Alimentares Digitais com a proposta de estimular o debate em torno das análises teóricas e empíricas que envolvem reflexões sobre culturas alimentares digitais, movimentos sociais e ativismo alimentar digital. Queremos concentrar a análise no debate alimentar mediado pelas tecnologias, ou seja, como diferentes atores utilizam o espaço “online” para se comunicar, se posicionar e debater sobre alimentação. Buscaremos também compreender como práticas alimentares cotidianas ganham dimensão pública e de que forma movimentos sociais alimentares expressam suas posições no ambiente digital. A “mesa digital” é uma extensão da “mesa analógica”: assim como no ambiente face a face, as relações no ambiente online podem expressar alianças, compartilhamentos, bem como tensões e conflitos.
Comment on "Observation of the Wigner-Huntington transition to metallic hydrogen"
Creators: name: Liu, Xiao-Di
name: Dalladay-Simpson, Philip
name: Howie, Ross T.
name: Li, Bing
name: Gregoryanz, Eugene
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dias and Silvera (Letters, p. 715, 2017) claim the observation of the Wigner-Huntington transition to metallic hydrogen at 495 GPa. We show that neither the claims of the record pressure or the phase transition to a metallic state are supported by any data and contradict the authors' own unconfirmed previous results.
description: 7 pages, 2 figures
Assessing spatial learning and memory in mice: Classic radial maze versus a new animal-friendly automated radial maze allowing free access and not requiring food deprivation
Creators: name: Kohler, Joel
name: Mei, Jie
name: Banneke, Stefanie
name: Winter, York
name: Endres, Matthias
name: Emmrich, Julius Valentin
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: memory
subject: spatial learning
subject: behavioral test
subject: radial arm maze (RAM)
subject: maze
subject: automation
subject: LPS (lipopolysaccharide)
subject: 570 Biologie

description: The radial arm maze (RAM) is a common behavioral test to quantify spatial learning and memory in rodents. Prior attempts to refine the standard experimental setup have been insufficient. Previously, we demonstrated the feasibility of a fully automated, voluntary, and stress-free eight-arm RAM not requiring food or water deprivation. Here, we compared this newly developed refined RAM to a classic manual experimental setup using 24 female 10–12 weeks old C57BL/6J mice. We used a lipopolysaccharide (LPS)-induced model of systemic inflammation to examine long-term cognitive impairment for up to 13 weeks following LPS injection. Both mazes demonstrated robust spatial learning performance during the working memory paradigm. The refined RAM detected spatial learning and memory deficits among LPS-treated mice in the working memory paradigm, whereas the classic RAM detected spatial learning and memory deficits only in the combined working/reference memory paradigm. In addition, the refined RAM allowed for quantification of an animal’s overall exploratory behavior and day/night activity pattern. While our study highlights important aspects of refinement of the new setup, our comparison of methods suggests that both RAMs have their respective merits depending on experimental requirements.
Realistic Injection Simulations of a Cyclotron Spiral Inflector using OPAL
Creators: name: Winklehner, Daniel
name: Adelmann, Andreas
name: Gsell, Achim
name: Kaman, Tulin
name: Campo, Daniela
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We present an upgrade to the particle-in-cell ion beam simulation code OPAL that enables us to run highly realistic simulations of the spiral inflector system of a compact cyclotron. This upgrade includes a new geometry class and field solver that can handle the complicated boundary conditions posed by the electrode system in the central region of the cyclotron both in terms of particle termination, and calculation of self-fields. Results are benchmarked against the analytical solution of a coasting beam. As a practical example, the spiral inflector and the first revolution in a 1 MeV/amu test cyclotron, located at Best Cyclotron Systems, Inc., are modeled and compared to the simulation results. We find that OPAL can now handle arbitrary boundary geometries with relative ease. Comparison of simulated injection efficiencies, and beam shape compare well with measured efficiencies and a preliminary measurement of the beam distribution after injection.
EMCD with an electron vortex filter: Limitations and possibilities
Creators: name: Schachinger, Thomas
name: Löffler, Stefan
name: Steiger-Thirsfeld, Andreas
name: Stöger-Pollach, Michael
name: Schneider, Sebastian
name: Pohl, Darius
name: Rellinghaus, Bernd
name: Schattschneider, Peter
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discuss the feasibility of detecting spin polarized electronic transitions with a vortex filter. This approach does not rely on the principal condition of the standard energy loss magnetic chiral dichroism (EMCD) technique, the precise alignment of the crystal, and thus paves the way for the application of EMCD to new classes of materials and problems. The dichroic signal strength in the L$_{2,3}$-edge of ferromagnetic cobalt is estimated on theoretical grounds. It is shown that magnetic dichroism can, in principle, be detected. However, as an experimental test shows, count rates are currently too low under standard conditions.
Prior Indigenous Technological Species
Creators: name: Wright, Jason T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: One of the primary open questions of astrobiology is whether there is extant or extinct life elsewhere the Solar System. Implicit in much of this work is that we are looking for microbial or, at best, unintelligent life, even though technological artifacts might be much easier to find. SETI work on searches for alien artifacts in the Solar System typically presumes that such artifacts would be of extrasolar origin, even though life is known to have existed in the Solar System, on Earth, for eons. But if a prior technological, perhaps spacefaring, species ever arose in the Solar System, it might have produced artifacts or other technosignatures that have survived to present day, meaning Solar System artifact SETI provides a potential path to resolving astrobiology's question. Here, I discuss the origins and possible locations for technosignatures of such a $prior$ $indigenous$ $technological$ $species$, which might have arisen on ancient Earth or another body, such as a pre-greenhouse Venus or a wet Mars. In the case of Venus, the arrival of its global greenhouse and potential resurfacing might have erased all evidence of its existence on the Venusian surface. In the case of Earth, erosion and, ultimately, plate tectonics may have erased most such evidence if the species lived Gyr ago. Remaining indigenous technosignatures might be expected to be extremely old, limiting the places they might still be found to beneath the surfaces of Mars and the Moon, or in the outer Solar System.
description: 11pp, no figures. Accepted for publication in the International Journal of Astrobiology. v2: Added some important references
Radar sounding of Lucus Planum, Mars, by MARSIS
Creators: name: Orosei, Roberto
name: Rossi, Angelo Pio
name: Cantini, Federico
name: Caprarelli, Graziella
name: Carter, Lynn M.
name: Papiano, Irene
name: Cartacci, Marco
name: Cicchetti, Andrea
name: Noschese, Raffaella
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Lucus Planum, extending for a radius of approximately 500 km around 181° E, 5° S, is part of the Medusae Fossae Formation (MFF), a set of several discontinuous deposits of fine-grained, friable material straddling across the Martian highland-lowland boundary. The MFF has been variously hypothesized to consist of pyroclastic flows, pyroclastic airfall, paleopolar deposits, or atmospherically-deposited icy dust driven by climate cycles. MARSIS, a low-frequency subsurface-sounding radar carried by ESA's Mars Express, acquired 238 radar swaths across Lucus Planum, providing sufficient coverage for the study of its internal structure and dielectric properties. Subsurface reflections were found only in three areas, marked by a distinctive surface morphology, while the central part of Lucus Planum appears to be made of radar-attenuating material preventing the detection of basal echoes. The bulk dielectric properties of these areas were estimated and compared with those of volcanic rocks and ice-dust mixtures. Previous interpretations that east Lucus Planum and the deposits on the north-western flanks of Apollinaris Patera consist of high-porosity pyroclastic material are strongly supported by the new results. The north-western part of Lucus Planum is likely to be much less porous, although interpretations about the nature of the subsurface materials are not conclusive. The exact origin of the deposits cannot be constrained by radar data alone, but our results for east Lucus Planum are consistent with an overall pyroclastic origin, likely linked to Tharsis Hesperian and Amazonian activity.
description: 39 pages, 8 figures, 2 tables
Metastability and hysteretic vortex pinning near the order-disorder transition in NbSe$_2$: An interplay between plastic and elastic energy barriers?
Creators: name: Bermúdez, M. Marziali
name: Louden, E. R.
name: Eskildsen, M. R.
name: Dewhurst, C. D.
name: Bekeris, V.
name: Pasquini, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We studied thermal and dynamic history effects in the vortex lattice (VL) near the order-disorder transition in clean NbSe$_2$ single crystals. Comparing the evolution of the effective vortex pinning and the bulk VL structure, we observed metastable superheated and supercooled VL configurations that coexist with a hysteretic effective pinning response due to thermal cycling of the system. A novel scenario, governed by the interplay between (lower) elastic and (higher) plastic energy barriers, is proposed as an explanation for our observations: Plastic barriers, which prevent the annihilation or creation of topological defects, require dynamic assistance to be overcome and to achieve a stable VL at each temperature. Conversely, thermal hysteresis in the pining response is ascribed to low energy barriers, which inhibit rearrangement within a single VL correlation volume and are easily overcome as the relative strength of competing interactions changes with temperature.
description: 9 pages, 5 figures. To be published in Physical Review B
Gigahertz-peaked spectra pulsars and thermal absorption model
Creators: name: Kijak, J.
name: Basu, R.
name: Lewandowski, W.
name: Rozko, K.
name: Dembska, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the results of our radio interferometric observations of pulsars at 325 MHz and 610 MHz using the Giant Metrewave Radio Telescope (GMRT). We used the imaging method to estimate the flux densities of several pulsars at these radio frequencies. The analysis of the shapes of the pulsar spectra allowed us to identify five new gigahertz-peaked spectra (GPS) pulsars. Using the hypothesis that the spectral turnovers are caused by thermal free-free absorption in the interstellar medium, we modeled the spectra of all known objects of this kind. Using the model, we were able to put some observational constrains on the physical parameters of the absorbing matter, which allows us to distinguish between the possible sources of absorption. We also discuss the possible effects of the existence of GPS pulsars on future search surveys, showing that the optimal frequency range for finding such objects would be from a few GHz (for regular GPS sources) to possibly 10 GHz for pulsars and radio-magnetars exhibiting very strong absorption.
description: Accepted for publication in ApJ, 28 pages, 8 figures
A matrix-based method of moments for fitting multivariate network meta-analysis models with multiple outcomes and random inconsistency effects
Creators: name: Jackson, Dan
name: Bujkiewicz, Sylwia
name: Law, Martin
name: Riley, Richard D
name: White, Ian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Random-effects meta-analyses are very commonly used in medical statistics. Recent methodological developments include multivariate (multiple outcomes) and network (multiple treatments) meta-analysis. Here we provide a new model and corresponding estimation procedure for multivariate network meta-analysis, so that multiple outcomes and treatments can be included in a single analysis. Our new multivariate model is a direct extension of a univariate model for network meta-analysis that has recently been proposed. We allow two types of unknown variance parameters in our model, which represent between-study heterogeneity and inconsistency. Inconsistency arises when different forms of direct and indirect evidence are not in agreement, even having taken between-study heterogeneity into account. However the consistency assumption is often assumed in practice and so we also explain how to fit a reduced model which makes this assumption. Our estimation method extends several other commonly used methods for meta-analysis, including the method proposed by DerSimonian and Laird (1986). We investigate the use of our proposed methods in the context of a real example.
Determining $H_0$ with the latest HII galaxy measurements
Creators: name: Wang, Deng
name: Meng, Xin-He
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We use the latest HII galaxy measurements to determine the value of $H_0$ adopting a combination of model-dependent and model-independent method. By constraining five cosmological models, we find that the obtained values of $H_0$ are more consistent with the recent local measurement by Riess et al. 2016 (hereafter R16) at $1σ$ confidence level, and that these five models prefer a higher best-fit value of $H_0$ than R16's result. To check the correctness of $H_0$ values obtained by model-dependent method, for the first time, we implement the model-independent Gaussian processes (GP) using the HII galaxy measurements. We find that the GP reconstructions also prefer a higher value of $H_0$ than R16's result. Therefore, we conclude that the current HII galaxy measurements support a higher cosmic expansion rate.
description: arXiv admin note: text overlap with arXiv:1610.01202
Precise simulation for single-hole spin control in semiconductor quantum dots
Creators: name: Wang, YuanDong
name: Ni, JingHan
name: Wei, JianHua
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The precise simulation of the preparation, control, and readout of a single-hole spin is investigated via hierarchical equations of motion(HEOM) approach. By ionization of a resonantly excited electron-hole pair and tunneling the conduction level electrons into electrodes, a single-hole spin qubit is initialized. SU(2) control is achieved via the combination of Larmor procession of the hole spin in Voigt geometry magnetic field and rotation about the optical axis with a geometric phase induced by a picosecond laser pulse. Read-out of the qubit is implemented through photocurrent. We compared the whole simulation process with experiments, demonstrate the optimal of fidelity due to broadening effect.
description: 6 pages, 3 figures
Unidirectional Localization of Photons
Creators: name: Ramezani, Hamidreza
name: Jha, Pankaj
name: Wang, Yuan
name: Zhang, Xiang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Artificial defects embedded in periodic structures are important foundation for creating localized states with vast range of applications in condensed matter physics, photonics and acoustics. In photonics, localized states are extensively used to confine and manipulate photons. Up to now, all the proposed localized states are reciprocal and restricted by time reversal symmetry. Consequently, localization is bidirectional and photons at the allowed passband in the otherwise forbidden stop band are confined irrespective of the direction of incident beam. In this report, by embedding a single defect in a one-dimensional spatiotemporally modulated photonic lattice, we demonstrate that it is possible to have localization of photon only in one direction. In a spatiotemporally modulated photonics lattice, a time dependent potential generates an effective magnetic biasing, which breaks the reciprocity. Moreover, in such moving lattices the dispersion relation obtains a shift depending on the direction of effective magnetic biasing. A static defect synthesized in a temporally modulated lattice will generate a spatial localization of light in the bandgap. However, due to the shift of the bandgap the localization occurs in different frequencies depending on the direction of incident field. We envisage that this phenomenon might has impact not only in photonics but also other areas of physics and engineering such as condensed matter and acoustics, opens the doors for designing new types of devices such as non-reciprocal traps, sensors, unidirectional tunable filters, and might result in unconventional transports such as unidirectional lasing. Despite its applications, our proposal, namely a defect sate in a driven system, can be considered as a pedagogical example of Floquet problem with analytical solution.
Evolution of broad-band SED during outburst rise in NS X-ray Nova Aql X-1
Creators: name: Meshcheryakov, Alexander V.
name: Tsygankov, Sergey S.
name: Khamitov, Irek M.
name: Shakura, Nikolay I.
name: Bikmaev, Ilfan F.
name: Eselevich, Maxim V.
name: Vlasyuk, Valeriy V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The observed evolution of the broad-band spectral energy distribution (SED) in NS X-ray Nova Aql X-1 during the rise phase of a bright FRED-type outburst in 2013 can be understood in the framework of thermal emission from unstationary accretion disc with temperature radial distribution transforming from a single-temperature blackbody emitting ring into the multi-colour irradiated accretion disc. SED evolution during the hard to soft X-ray state transition looks curious, as it can not be repro- duced by the standard disc irradiation model with a single irradiation parameter for NUV, Optical and NIR spectral bands. NIR (NUV) band is correlated with soft (hard) X-ray flux changes during the state transition interval, respectively. In our interpreta- tion, at the moment of X-ray state transition UV-emitting parts of the accretion disc are screened from direct X-ray illumination from the central source and are heated primary by hard X-rays (E > 10 keV), scattered in the hot corona or wind possibly formed above the optically-thick outer accretion flow; the outer edge of multi-colour disc, which emits in Optical-NIR, can be heated primary by direct X-ray illumination. We point out that future simultaneous multi-wavelength observations of X-ray Nova systems during the fast X-ray state transition interval are of great importance, as it can serve as 'X-ray tomograph' to study physical conditions in outer regions of accretion flow. This can provide an effective tool to directly test the energy-dependent X-ray heating efficiency, vertical structure and accretion flow geometry in transient LMXBs.
description: Submitted to MNRAS
Charged hydrophobic colloids at an oil/aqueous phase interface
Creators: name: Kelleher, Colm P.
name: Wang, Anna
name: Guerrero-García, Guillermo Iván
name: Hollingsworth, Andrew D.
name: Guerra, Rodrigo E.
name: Krishnatreya, Bhaskar Jyoti
name: Grier, David G.
name: Manoharan, Vinothan N.
name: Chaikin, Paul M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Hydrophobic PMMA colloidal particles, when dispersed in oil with a relatively high dielectric constant, can become highly charged. In the presence of an interface with a conducting aqueous phase, image charge effects lead to strong binding of colloidal particles to the interface, even though the particles are wetted very little by the aqueous phase. In this paper, we study both the behavior of individual colloidal particles as they approach the interface, and the interactions between particles that are already interfacially bound. We demonstrate that using particles which are minimally wetted by the aqueous phase allows us to isolate and study those interactions which are due solely to charging of the particle surface in oil. Finally, we show that these interactions can be understood by a simple image-charge model in which the particle charge $q$ is the sole fitting parameter.
Hydrological process analysis in the Vallon de Nant: meteorological data
Creators: name: Michelon, Anthony
Publisher: name: Zenodo
Year: 2022
Subjects: hydrology, snow, Vallon de Nant, Vaud, Switzerland, Alps, isotopes, tracers, LUFFT,

description: This is an extract of the PhD thesis of Anthony Michelon, entitled "Hydrologic processes analysis in a high Alpine catchment: the case of the Vallon de Nant", 2022. The full version is accessible on the university server, link. It namely contains the location of the meteorological stations in its Table 5. The corresponding data set is published on Zenodo. The PhD research was funded by the Swiss National Science Foundation, SNFS, grant number PP00P2_1157611
Reliability of the measured velocity anisotropy of the Milky Way stellar halo
Creators: name: Hattori, Kohei
name: Valluri, Monica
name: Loebman, Sarah R.
name: Bell, Eric F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Determining the velocity distribution of halo stars is essential for estimating the mass of the Milky Way and for inferring its formation history. Since the stellar halo is a dynamically hot system, the velocity distribution of halo stars is well described by the 3-dimensional velocity dispersions $(σ_r, σ_θ, σ_ϕ)$, or by the velocity anisotropy parameter $β=1-(σ_θ^2+σ_ϕ^2)/(2σ_r^2)$. Direct measurements of $(σ_r, σ_θ, σ_ϕ)$ consistently suggest $β=0.5$-$0.7$ for nearby halo stars. In contrast, the value of $β$ at large Galactocentric radius $r$ is still controversial, since reliable proper motion data are available for only a handful of stars. In the last decade, several authors have tried to estimate $β$ for distant halo stars by fitting the observed line-of-sight velocities at each radius with simple velocity distribution models (local fitting methods). Some results of local fitting methods imply $β<0$ at $r \gtrsim 20 \;\rm{kpc}$, which is inconsistent with recent predictions from cosmological simulations. Here we perform mock-catalogue analyses to show that the estimates of $β$ based on local fitting methods are reliable only at $r \leq 15 \;\rm{kpc}$ with the current sample size ($\sim10^3$ stars at a given radius). As $r$ increases, the line-of-sight velocity (corrected for the Solar reflex motion) becomes increasingly closer to the Galactocentric radial velocity, so that it becomes increasingly more difficult to estimate tangential velocity dispersion $(σ_θ, σ_ϕ)$ from line-of-sight velocity distribution. Our results suggest that the forthcoming Gaia data will be crucial for understanding the velocity distribution of halo stars at $r \geq 20\;\rm{kpc}$.
description: [Deleted non-relevant figures] ApJ submitted. Comments welcome. 20 pages (14 pages + 6 pages for Appendix). 13 figures. Main result: Fig 7. Schematic diagram: Fig 9. Companion paper to Loebman et al. (2017)
LIGNINLARNING YUTILISHI VA TARKIBI XOSSALARINI O'RGANISH
Creators: name: Jumanova, Ziyoda
name: Jumag'ulov, Behruz
Publisher: name: Zenodo
Year: 2025

description: Lignin - ko'pchilik o'simliklarning tayanch to'qimalarida asosiy strukturaviy materiallarni tashkil etuvchi murakkab organik polimerlar sinfidir.  Ligninlar hujayra devorlarining shakllanishida , ayniqsa yog'och va po'stlog'ida ayniqsa muhimdir , chunki ular qattiqlikni beradi va osonlikcha chirimaydi. Kimyoviy jihatdan ligninlar fenolik funksionallarni o'zaro bog'lash orqali hosil bo'lgan polimerlardir. Ko'p sonli lignin preparatlari va namunaviy birikmalarning spektrlarini o'rganish ligninning aromatik tabiatini isbotlash va 300-400 nm mintaqada so'rilish bilan karbonil guruhlari yoki tuzilishidagi mavjudligi o'rtasidagi bog'liqlikni aniqlashga imkon berdi Mikroto'lqinli nurlanish bilan rag'batlantirilgan karbonat angidrid reformatsiyasi (CR) paytida ligninning strukturaviy o'zgarishlarini o'rganish uchun tebranish spektroskopiyasi ishlatilgan.
“Co-Mentoring: A Block Approach,” Library Leadership and Management Journal, v.29, no.2, p. 1-9. February 2015. DOI: https://doi.org/10.5860/llm.v29i2.7122
Creators: name: Totleben, Kristen
name: Deiss, Kathryn
Publisher: name: University of Rochester
Year: 2023
Subjects: classificationCode: 4610
subject: Library and information studies

description: This article discusses a unique approach to a mentoring relationship. Beginning as a traditional mentoring relationship in late 2012, the authors later changed it to a co-mentoring relationship. During the ALA Midwinter Conference’s 2013 President’s Program in which Peter Block was a speaker, the author who was the mentor became re-inspired by his ideas about abundance, leadership, and community and could see powerful applications to the already formed mentoring relationship she had with the author in the mentee role. This article highlights the evolution of a mentoring relationship, transforming it from a traditional hierarchical nature to one of a “commitment to equality, deep self-awareness and intentionality” (Block’s ALA presentation). The authors explore how and why a co-mentoring relationship works for them and how it may be applicable to others interested in sustaining a mentoring relationship. Other discussion includes how this relationship affects careers and lives, with benefits that carry over to the organizations in which they work.
“Co-Mentoring: A Block Approach,” Library Leadership andManagement Journal, v.29, no.2, p. 1-9. February 2015. DOI: https://doi.org/10.5860/llm.v29i2.7122
Creators: name: Totleben, Kristen
name: Deiss, Kathryn
Publisher: name: University of Rochester
Year: 2023
Subjects: classificationCode: 4610
subject: Library and information studies

description: This article discusses a unique approach to a mentoring relationship. Beginning as a traditional mentoring relationship in late 2012, the authors later changed it to a co-mentoring relationship. During the ALA Midwinter Conference’s 2013 President’s Program in which Peter Block was a speaker, the author who was the mentor became re-inspired by his ideas about abundance, leadership, and community and could see powerful applications to the already formed mentoring relationship she had with the author in the mentee role. This article highlights the evolution of a mentoring relationship, transforming it from a traditional hierarchical nature to one of a “commitment to equality, deep self-awareness and intentionality” (Block’s ALA presentation). The authors explore how and why a co-mentoring relationship works for them and how it may be applicable to others interested in sustaining a mentoring relationship. Other discussion includes how this relationship affects careers and lives, with benefits that carry over to the organizations in which they work.
Shortening binary complexes and commutativity of $K$-theory with infinite products
Creators: name: Kasprowski, Daniel
name: Winges, Christoph
Publisher: name: arXiv
Year: 2017
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 19D06 (Primary), 18E10 (Secondary)

description: We show that in Grayson's model of higher algebraic $K$-theory using binary acyclic complexes, the complexes of length two suffice to generate the whole group. Moreover, we prove that the comparison map from Nenashev's model for $K_1$ to Grayson's model for $K_1$ is an isomorphism. It follows that algebraic $K$-theory of exact categories commutes with infinite products.
description: 23 pages
Aix-en-Provence, cours Sextius, tambourinaire sculpté sur la fontaine dite "Fontaine Pascal"
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
Stochastic Representations for the Wave Equation on Graphs and their Scaling Limits
Creators: name: Wang, Kaizheng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper is devoted to an interacting particle system that provides probabilistic interpretation of the wave equation on graphs. A Feynman-Kac-type formula is established, connecting the expectation of the process with the wave equation on graphs. Non-asymptotic $L^2$ estimates are presented. It is then shown that the high-density hydrodynamic limit of the system is given by the wave equation in Euclidean space. The sharpness of scaling limit result is demonstrated by a phase transition phenomenon.
description: 28 pages in J. Math. Anal. Appl. (2017)
TNOs are Cool: a survey of the Transneptunian Region XII. Thermal light curves of Haumea, 2003 VS2 and 2003 AZ84 with Herschel Space Observatory-PACS
Creators: name: Santos-Sanz, P.
name: Lellouch, E.
name: Groussin, O.
name: Lacerda, P.
name: Mueller, T. G.
name: Ortiz, J. L.
name: Kiss, C.
name: Vilenius, E.
name: Stansberry, J.
name: Duffard, R.
name: Fornasier, S.
name: Jorda, L.
name: Thirouin, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Time series observations of the dwarf planet Haumea and the Plutinos 2003VS2 and 2003AZ84 with Herschel/PACS are presented in this work. Thermal emission of these trans-Neptunian objects were acquired as part of the TNOs are Cool Herschel Space Observatory key programme. We search for the thermal light curves at 100 and 160um of Haumea and 2003AZ84, and at 70 and 160um for 2003VS2 by means of photometric analysis of the PACS data. The goal of this work is to use these thermal light curves to obtain physical and thermophysical properties of these icy Solar System bodies. Haumea's thermal light curve is clearly detected at 100 and 160um. The effect of the reported dark spot is apparent at 100um. Different thermophysical models were applied to these light curves, varying the thermophysical properties of the surface within and outside the spot. Although no model gives a perfect fit to the thermal observations, results imply an extremely low thermal inertia (< 0.5 MKS) and a high phase integral (> 0.73) for Haumea's surface. We note that the dark spot region appears to be only weakly different from the rest of the object, with modest changes in thermal inertia and/or phase integral. The thermal light curve of 2003VS2 is not firmly detected at 70 and at 160um but a thermal inertia of 2+/-0.5 MKS can be derived from these data. The thermal light curve of 2003AZ84 is not firmly detected at 100um. We apply a thermophysical model to the mean thermal fluxes and to all the Herschel/PACS and Spitzer/MIPS thermal data of 2003AZ84, obtaining a close to pole-on orientation as the most likely for this TNO. For the three TNOs, the thermal inertias derived from light curve analyses or from the thermophysical analysis of the mean thermal fluxes confirm the generally small or very small surface thermal inertias of the TNO population, which is consistent with a statistical mean value of 2.5+/-0.5 MKS.
description: 18 pages, 12 figures. Accepted for publication in A&A