cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Experimental for Establishing Setup to Acquire the AE Signatures from the Surface Grinding Process
Creators: name: Singh, Atul
name: Sharma, Alok
Publisher: name: Figshare
Year: 2019
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Condition monitoring has emerged as an important technique in manufacturing industries for predictive maintenance and on-line monitoring of the processes and equipment. Because of the accessibility of sensors and sign handling innovation, actualizing condition observing frameworks in an assembling domain has turned out to be simple. In this investigation, a straightforward gadget used to quantify the sharpness of the rough particles of the crushing wheel is planned and created with a target of distinguishing the pounding wheel conditions. The sharpness of the crushing wheel is one of the significant variables for accomplishing the required surface geometry in the completed work-piece. Crushing wheel conditions are set up utilizing the pounding wheel life cycle plot, for the whole granulating cycle. A test arrangement has been built up to catch AE flag in an auto-feed surface granulating procedure utilizing Aluminium Oxide pounding wheel. AE time-area highlights are extricated utilizing AE-WIN programming. Highlight choice has been done by breaking down the sign in the time area. RMS and Energy highlights are found to have great connection with crushing wheel conditions. Factual AI classifiers, for example, Artificial Neural Network, Fuzzy frameworks, and Neuro-Fuzzy frameworks are utilized to anticipate the crushing wheel conditions. Results shows, ANN and Fuzzy and Neuro-Fuzzy frameworks can foresee the pounding wheel condition with great precision.
Conference Talk: A Web Accessible Dictionary of Southeastern Pomo
Creators: name: Chang, Charles
name: Katseff, Shira
name: Lee-Goldman, Russell
name: Piqueras-Brunet, Marta
name: Yao, Yao
name: Hinton, Leanne
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: pom

description: 1 PDF file. The slides of a talk on given 21 July 2008 at the 18th International Congress of Linguists by Charles Chang, Shira Katseff, Russell Lee-Goldman, Marta Piqueras-Brunet, and Yao Yao.
NMR implementation of Factoring Large Numbers with GaußSums: Suppression of Ghost Factors
Creators: name: Peng, Xinhua
name: Suter, Dieter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Finding the factors of an integer can be achieved by various experimental techniques, based on an algorithm developed by Schleich et al., which uses specific properties of Gaußsums. Experimental limitations usually require truncation of these series, but if the truncation parameter is too small, it is no longer possible to distinguish between factors and so-called "ghost" factors. Here, we discuss two techniques for distinguishing between true factors and ghost factors while keeping the number of terms in the sum constant or only slowly increasing. We experimentally test these modified algorithms in a nuclear spin system, using NMR.
description: 4 pages, 5 figures
The one-flavor quark condensate and related problems
Creators: name: DeGrand, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: I describe a recent calculation (by me, Hoffmann, Liu, and Schaefer) of the chiral condensate in one-flavor QCD using numerical simulations with overlap fermions. The condensate is extracted by fitting the distribution of low lying eigenmodes of the Dirac operator in sectors of fixed topological charge to the predictions of Random Matrix Theory. Our results are in excellent agreement with estimates from the orientifold large-N expansion. Much interesting physics surrounds this calculation, which I will highlight.
description: 11 pages, 2 figures: XXIVth International Symposium on Lattice Field Theory plenary talk
Rate-dependent slip boundary conditions for simple fluids
Creators: name: Priezjev, Nikolai V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The dynamic behavior of the slip length in a fluid flow confined between atomically smooth surfaces is investigated using molecular dynamics simulations. At weak wall-fluid interactions, the slip length increases nonlinearly with the shear rate provided that the liquid/solid interface forms incommensurable structures. A gradual transition to the linear rate-dependence is observed upon increasing the wall-fluid interaction. We found that the slip length can be well described by a function of a single variable that in turn depends on the in-plane structure factor, contact density and temperature of the first fluid layer near the solid wall. Extensive simulations show that this formula is valid in a wide range of shear rates and wall-fluid interactions.
Controlo Estratégico na Farmácia Comunitária com base no Balanced Scorecard: Um Estudo de Caso
Creators: name: Santos, Daniela
name: Rodrigues, José Azevedo
name: Portela, Sofia
Publisher: name: Revista Portuguesa de Farmacoterapia
Year: 2019

description: Introdução: As empresas do sector farmacêutico foram nestes últimos 10 anos afetadas por inúmeras alterações, não só políticas como económicas e sociais. Assim sendo, tornou-se imprescindível ter uma gestão rigorosa e uma estratégia planeada. Por conseguinte, o balanced scorecard apresentado em 1992 por Kaplan e Norton e melhorado em 1996, permitiu auxiliar as empresas a organizarem a sua estratégia, alinhando-a e comunicando de forma clara e objetiva a todos os segmentos. Tendo em vista o sucesso ao longo dos anos em diversas empresas que aplicaram este instrumento na sua gestão, este artigo tem por objetivo contruir um mapa estratégico e um balanced scorecard aplicado à realidade das farmácias comunitárias. Metodologia: A metodologia usada baseou-se numa análise quantitativa de dados de uma farmácia, tal como numa análise organizacional interna através de entrevistas semiestruturadas e inquéritos presenciais (Servperf) aos clientes da farmácia. Conclusão: Concluiu-se que é possível construir um mapa estratégico simples e claro dos objetivos estratégicos da farmácia e apresentar o balanced scorecard desses mesmos objetivos organizados e percetíveis a toda a empresa de modo a enunciar as medidas, metas e iniciativas a realizar.
description: Revista Portuguesa de Farmacoterapia, v. 11 n. 1 (2019): Janeiro
Double-Layer Silicon PIN Photodiode X-Ray Detector for a Future X-ray Timing Mission
Creators: name: Feng, Hua
name: Kaaret, Philip
name: Andersson, Hans
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A double-layer silicon detector consisting of two 500micron-thick silicon PIN photodiodes with independent readouts was mounted in a vacuum chamber and tested with X-ray sources. The detector is sensitive from 1-30 keV with an effective area of 6 mm^2. The detector performs best at -35 C with an energy resolution of 220 eV (FWHM, full width at half maximum) at 5.9 keV, and is able to operate at room temperature, +25 C, with moderate resolution around 760 eV (FWHM). The response of the top layer sensor is highly uniform across the sensitive area. This large-format silicon detector is appropriate for future X-ray timing missions.
description: 10 pages, 5 figures, NIM A to appear
Three-dimensional morphological asymmetries in the ejecta of Cassiopeia A using a component separation method in X-rays
Creators: name: Picquenot, Adrien
name: Acero, Fabio
name: Holland-Ashford, Tyler
name: Lopez, Laura A.
name: Bobin, Jérôme
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recent simulations have shown that asymmetries in the ejecta distribution of supernova remnants (SNR) can still reflect asymmetries from the initial supernova explosion. Thus, their study provides a great means to test and constrain model predictions in relation to the distributions of heavy elements or the neutron star kicks, both of which are key to better understanding the explosion mechanisms in core-collapse supernovae. The use of a novel blind source separation method applied to the megasecond X-ray observations of the well-known Cassiopeia A SNR has revealed maps of the distribution of the ejecta endowed with an unprecedented level of detail and clearly separated from continuum emission. Our method also provides a three-dimensional view of the ejecta by disentangling the red- and blue-shifted spectral components and associated images of the Si, S, Ar, Ca and Fe, providing insights into the morphology of the ejecta distribution in Cassiopeia A. These mappings allow us to thoroughly investigate the asymmetries in the heavy elements distribution and probe simulation predictions about the neutron star kicks and the relative asymmetries between the different elements. We find in our study that most of the ejecta X-ray flux stems from the red-shifted component, suggesting an asymmetry in the explosion. In addition, the red-shifted ejecta can physically be described as a broad, relatively symmetric plume, whereas the blue-shifted ejecta is more similar to a dense knot. The neutron star also moves directly opposite to the red-shifted parts of the ejecta similar to what is seen with 44Ti. Regarding the morphological asymmetries, it appears that heavier elements have more asymmetrical distributions, which confirms predictions made by simulations. This study is a showcase of the capacities of new analysis methods to revisit archival observations to fully exploit their scientific content.
description: revised version
Η Πιπίνα Τσιμικάλη και η συμβολή της στην παιδική λογοτεχνίας: ιστορική και ερμηνευτική προσέγγιση του έργου της
Creators: name: Σαραφοπούλου, Αναστασία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Τσιμικάλη
Παιδική λογοτεχνία
Παιδικό βιβλίο
Tsimikali
Children’s literature
Children’s book

description: Η παρούσα εργασία μελετά το έργο της Πιπίνας Τσιμικάλη και την προσφορά της στη ελληνική παιδική λογοτεχνία. Στο πρώτο μέρος της εργασίας επιχειρείται μία παρουσίαση της ελληνικής παιδικής λογοτεχνίας και τις συνθήκες που επηρέασαν την Τσιμικάλη την εποχή που έγραψε τα κείμενα της. Στο δεύτερο μέρος ενδιαφερόμαστε, κυρίως, για την ανάλυση κάποιων δικών της κειμένων. Με γνώμονα της προσέγγιση της Νέας Κριτικής για την ανάλυση των λογοτεχνικών κειμένων, γνωρίζουμε τους χαρακτήρες, τα θέματα και την οπτική γωνία τεσσάρων έργων της Πιπίνας Τσιμικάλη.
description: This essay is about the books of Pipina Tsimikali and its offer to Greek children’s literature. On the first part we present a period of Greek children’s literature and the circumstances, which affected the way she wrote her books. On the second part we analyse some of her books. With the help of the Theory of New Criticism about analysing the literature, we come closer to the characters, the subjects and the point of view of Tsimikali’s four selected books.
A novel route to a finite center-of-mass momentum pairing state; current driven FFLO state
Creators: name: Doh, Hyeonjin
name: Song, Matthew
name: Kee, Hae-Young
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The previously studied Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is stabilized by a magnetic field via the Zeeman coupling in spin-singlet superconductors. Here we suggest a novel route to achieve non-zero center-of-mass momentum pairing states in superconductors with Fermi surface nesting. We investigate two-dimensional superconductors under a uniform external current, which leads to a finite pair-momentum of ${\bf q}_{e}$. We find that an FFLO state with a spontaneous pair-momentum of ${\bf q}_{s}$ is stabilized above a certain critical current which depends on the direction of the external current. A finite ${\bf q}_s$ arises in order to make the total pair-momentum of ${\bf q}_t(={\bf q}_s + {\bf q}_e)$ perpendicular to the nesting vector, which lowers the free energy of the FFLO state, as compared to the superconducting and normal states. We also suggest experimental signatures of the FFLO state.
description: 4 pages, 5 figures
Detecting an axion-like particle with machine learning at the LHC
Creators: name: Ren, Jie
name: Wang, Daohan
name: Wu, Lei
name: Yang, Jin Min
name: Zhang, Mengchao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Axion-like particles (ALPs) appear in various new physics models with spontaneous global symmetry breaking. When the ALP mass is in the range of MeV to GeV, the cosmology and astrophysics bounds are so far quite weak. In this work, we investigate such light ALPs through the ALP-strahlung production processes $pp \to W^\pm a, Z a$ with the sequential decay $a \to γγ$ at the 14 TeV LHC with an integrated luminosity of 3000 fb$^{-1}$ (HL-LHC). Building on the concept of jet image which uses calorimeter towers as the pixels of the image and measures a jet as an image, we investigate the potential of machine learning techniques based on convolutional neural network (CNN) to identify the highly boosted ALPs which decay to a pair of highly collimated photons. With the CNN tagging algorithm, we demonstrate that our approach can extend current LHC sensitivity and probe the ALP mass range from 0.3~GeV to 5~GeV. The obtained bounds are stronger than the existing limits on the ALP-photon coupling.
description: 26 pages, 10 figures, 5 tables
Robust test statistics for data sets with missing correlation information
Creators: name: Koch, Lukas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Not all experiments publish their results with a description of the correlations between the data points. This makes it difficult to do hypothesis tests or model fits with that data, since just assuming no correlation can lead to an over- or underestimation of the resulting uncertainties. This work presents robust test statistics that can be used with data sets with missing correlation information. They are exact in the case of no correlation and either guaranteed to be conservative -- i.e. the uncertainty is never underestimated -- in the presence of correlations, or they are also exact in the degenerate case of perfect correlation between the data points.
description: 24 pages, 15 figures, 2 tables, 2 code listings
Extensions of Bundles of C*-algebras
Creators: name: Steeger, Jeremy
name: Feintzeig, Benjamin H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Operator Algebras (math.OA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B63 (Primary) 46L65, 81R10, 81S99 (Secondary)

description: Bundles of C*-algebras can be used to represent limits of physical theories whose algebraic structure depends on the value of a parameter. The primary example is the $\hbar\to 0$ limit of the C*-algebras of physical quantities in quantum theories, represented in the framework of strict deformation quantization. In this paper, we understand such limiting procedures in terms of the extension of a bundle of C*-algebras to some limiting value of a parameter. We prove existence and uniqueness results for such extensions. Moreover, we show that such extensions are functorial for the C*-product, dynamical automorphisms, and the Lie bracket (in the $\hbar\to 0$ case) on the fiber C*-algebras.
description: 28 pages, final version submitted to Reviews in Mathematical Physics
Συνθετικές μελέτες νέων πιθανών αναστολέων των PARP-1
Creators: name: Νακίου, Ειρήνη Ανδρέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αναστολείς PARP-1
1,3-Διπολικές κυκλοπροσθήκες
Νιτρόνες
PARP-1 inhibitors
1,3-dipolar cycloadditions
Nitrones

description: Η παρούσα διπλωματική εργασία εκπονήθηκε εξ’ολοκλήρου στο Εργαστήριο Οργανικής Χημείας του τμήματος Χημείας του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης. Αντικείμενό της υπήρξε η μελέτη και η σύνθεση πιθανών αναστολέων της PARP-1 μέσω 1,3-διπολικών κυκλοπροσθήκων. Στην εισαγωγή αναφέρονται κάποιες γενικές πληροφορίες που αφορούν τις αντιδράσεις 1,3-κυκλοπροσθήκης με νιτρόνες, καθώς και η μελέτη της δομής της PARP-1. Στο κύριο μέρος παρουσιάζονται αναλυτικά οι συνθετικές πορείες που ακολουθήθηκαν, και ερμηνεύονται τα πειραματικά αποτελέσματα. Στο τελευταίο μέρος της εργασίας περιγράφονται λεπτομερώς οι πειραματικές διαδικασίες, που ακολουθήθηκαν για την παρασκευή και απομόνωση των ενώσεων και παρατίθενται συνοπτικά τα φασματοσκοπικά δεδομένα αυτών. Κλείνοντας τον πρόλογο αυτό θα ήθελα να ευχαριστήσω τον επιβλέποντα Καθηγητή κ. Αλέξανδρο Ε. Κουμπή, για την υπόδειξη του θέματος και την βοήθεια που μου προσέφερε καθ’ όλη την διάρκεια της διπλωματικής μου εργασίας. Επίσης, τον Επίκουρο Καθηγητή κ. Ιωάννη Λυκάκη και την Επίκουρη Καθηγήτρια κ. Βασιλική Σαρλή για τη διόρθωση της εργασίας μου και τις εύστοχες παρατηρήσείς τους. Ακόμα, θα ήθελα να ευχαριστήσω όλα τα μέλη του εργαστηρίου μας, (προπτυχιακούς, μεταπτυχιακούς φοιτητές και υποψήφιους διδάκτορες) για το ευχάριστο περιβάλλον εργασίας και κυρίως τον υποψήφιο διδάκτορα Ρίζο Στέργιο για την πολύτιμη βοήθεια και στήριξή του. Τέλος, ευχαριστώ πολύ την οικογένεια μου για την ηθική και υλική υποστήριξη που μου προσέφεραν.
description: This Master thesis research was conducted at the Laboratory of Organic Chemistry, at the Department of Chemistry of Aristotle University of Thessaloniki. Main goal of this scientific research was the design and study of potential inhibitors of PARP-1, through 1,3-dipolar cycloaddition. In the introductory part, some general information about 1,3-dipolar cycloaddition with nitrones are given, followed by the description of PARP’s structure. The main part of the study contains all the synthetic schemes that were designed and followed step by step, including the problems faced and troubleshooting, for the efficient synthesis of the potential PARP inhibitors. In the last part of this study, all the experimental procedures are described in every detail. Also, the spectral data of all the compounds synthetized are given, whereas all references are listed at the last pages of this manuscript. At this point, I would like to thank my Supervisor Professor Alexander E. Koumbis for the guidance he provided me which played a major part to my research.
Metastable SUSY Breaking and Supergravity at Finite Temperature
Creators: name: Anguelova, Lilia
name: Ricci, Riccardo
name: Thomas, Steven
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study how coupling to supergravity affects the phase structure of a system exhibiting dynamical supersymmetry breaking in a metastable vacuum. More precisely, we consider the Seiberg dual of SQCD coupled to supergravity at finite temperature. We show that the gravitational interactions decrease the critical temperature for the second order phase transition in the quark direction, that is also present in the global case. Furthermore, we find that, due to supergravity, a new second order phase transition occurs in the meson direction, whenever there is a nonvanishing constant term in the superpotential. Notably, this phase transition is a necessary condition for the fields to roll, as the system cools down, towards the metastable susy breaking vacuum, because of the supergravity-induced shift of the metastable minimum away from zero meson vevs. Finally, we comment on the phase structure of the KKLT model with uplifting sector given by the Seiberg dual of SQCD.
description: 38 pages; Section 6 amended and expanded, references added
Status of Identification of VHE gamma-ray sources
Creators: name: Funk, Stefan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: With the recent advances made by Cherenkov telescopes such as H.E.S.S., the field of very high-energy (VHE) gamma-ray astronomy has recently entered a new era in which for the first time populations of Galactic sources such as e.g. Pulsar wind nebulae (PWNe) or Supernova remnants (SNRs) can be studied. However, while some of the new sources can be associated by positional coincidence as well as by consistent multi-wavelength data to a known counterpart at other wavelengths, most of the sources remain not finally identified. In the following, the population of Galactic H.E.S.S. sources will be used to demonstrate the status of the identifications, to classify them into categories according to this status and to point out outstanding problems.
description: To appear in Astrophysics and Space Science (Proceedings of "The multimessenger approach to unidentified gamma-ray sources"
Heat rectification by two qubits coupled with Dzyaloshinskii-Moriya interaction
Creators: name: Upadhyay, Vipul
name: Naseem, M. Tahir
name: Marathe, Rahul
name: Müstecaplıoğlu, Özgür E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate heat rectification in a two-qubit system coupled via the Dzyaloshinskii-Moriya (DM) interaction. We derive analytical expressions for heat currents and thermal rectification and provide possible physical mechanisms behind the observed results. We show that the anisotropy of DM interaction in itself is insufficient for heat rectification, and some other form of asymmetry is needed. We employ off-resonant qubits as the source of this asymmetry. We find the regime of parameters for higher rectification factors by examining the analytical expressions of rectification obtained from a global master equation solution. In addition, it is shown that the direction and quality of rectification can be controlled via various system parameters. Furthermore, we compare the influence of different orientations of the DM field anisotropy on the performance of heat rectification. Finally, we investigate the possible interplay between quantum correlations and the performance of the quantum thermal rectifier. We find that asymmetry in the coherences is a fundamental resource for the performance of the quantum thermal rectifier.
description: 11 pages, 8 figures
A Survey for "Normal" Irregular Satellites Around Neptune: Limits to Completeness
Creators: name: Sheppard, Scott S.
name: Jewitt, David C.
name: Kleyna, Jan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We surveyed 1.75 square degrees of sky near Neptune to an R-band 50% detection efficiency of 25.8 mags (corresponding to radii of about 17 km for an assumed albedo of 0.04). We discovered one new outer satellite, Psamathe (S/2003 N1), about 20 km in radius and having a distant retrograde orbit and moderate eccentricity. Until 2003 Neptune was only known to have two satellites which exhibited orbital signatures indicative of capture. Both of these, Triton and Nereid, are unusual when compared to the irregular satellites of other giant planets. With recent discoveries of four additional satellites by Holman et al. (2004) it is now apparent that Neptune has a distant ``normal'' irregular satellite system in which the satellites have radii and orbital properties similar to those of the satellites of other giant planets. We find that the satellite size distribution at Neptune is not well determined given the few objects known to date, being especially sensitive to the inclusion of Triton and Nereid in the sample. Finally, we note that Psamathe and S/2002 N4 have similar semi-major axes, inclinations and eccentricities. They may be fragments of a once larger satellite.
description: 10 pages, 9 figures (6 color), 3 tables; Accepted for the July 2006 Astronomical Journal
The nature of $σ$, $κ$, $a_0(980)$ and $f_0(980)$
Creators: name: van Beveren, E.
name: Bugg, D. V.
name: Kleefeld, F.
name: Rupp, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Masses and widths of the four light scalar mesons $σ$, $κ$, $a_0$(980) and $f_0$(980) may be reproduced in a model where mesons scatter via a $q\bar{q}$ loop. A transition potential is used to couple mesons to $q\bar{q}$ at a radius of $\sim 0.57$ fm. Inside this radius, there is an infinite bare spectrum of confined $q\bar{q}$ states, for which a harmonic oscillator is chosen here. The coupled-channel system approximately reproduces the features of both light and heavy meson spectroscopy. The generation of $σ$, $κ$, $a_0(980)$ and $f_0(980)$ is a balance between attraction due to the $q\bar q$ loop and suppression of the amplitudes at the Adler zeros. Phase shifts increase more rapidly as the coupling constant to the mesons increases. This leads to resonant widths which decrease with increasing coupling constant - a characteristically non-perturbative effect.
description: Plain LaTeX, 10 pages, 3 EPS figures; v2: 11 pages, better-quality figures, extra references, version accepted for publication in Phys. Lett. B
The Star Formation Epoch of the Most Massive Early-Type Galaxies
Creators: name: van Dokkum, Pieter G.
name: van der Marel, Roeland P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new Keck spectroscopy of early-type galaxies in three galaxy clusters at z~0.5. We focus on the fundamental plane (FP) relation, and combine the kinematics with structural parameters determined from HST images. The galaxies obey clear FP relations, which are offset from the FP of the nearby Coma cluster due to passive evolution of the stellar populations. The z~0.5 data are combined with published data for 11 additional clusters at 0.1810^11 M_sun, as implied by the FP. We find dlog(M/L(B))/dz = -0.555+-0.042, stronger evolution than was previously inferred from smaller samples. The observed evolution depends on the luminosity-weighted mean age of the stars in the galaxies, the initial mass function (IMF), selection effects due to progenitor bias, and other parameters. Assuming a normal IMF but allowing for various other sources of uncertainty we find z* = 2.01+-0.20 for the luminosity-weighted mean star formation epoch. The main uncertainty is the slope of the IMF in the range 1-2 Solar masses: we find z* = 4.0 for a top-heavy IMF with slope x=0. The M/L(B) ratios of the cluster galaxies are compared to those of recently published samples of field early-type galaxies at 0.32
description: Accepted for publication in ApJ. Minor corrections to match published version
Measuring complete quantum states with a single observable
Creators: name: Peng, Xinhua
name: Du, Jiangfeng
name: Suter, Dieter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Experimental determination of an unknown quantum state usually requires several incompatible measurements. However, it is also possible to determine the full quantum state from a single, repeated measurement. For this purpose, the quantum system whose state is to be determined is first coupled to a second quantum system (the "assistant") in such a way that part of the information in the quantum state is transferred to the assistant. The actual measurement is then performed on the enlarged system including the original system and the assistant. We discuss in detail the requirements of this procedure and experimentally implement it on a simple quantum system consisting of nuclear spins.
description: 11 pages, 6 figures
A Revised Model for the Formation of Disk Galaxies: Low Spin and Dark-Halo Expansion
Creators: name: Dutton, Aaron A.
name: Bosch, Frank C. van den
name: Dekel, Avishai
name: Courteau, Stephane
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use observed rotation velocity-luminosity (VL) and size-luminosity (RL) relations to single out a specific scenario for disk galaxy formation in the LCDM cosmology. Our model involves four independent log-normal random variables: dark-halo concentration c, disk spin lam_gal, disk mass fraction m_gal, and stellar mass-to-light ratio M/L_I. A simultaneous match of the VL and RL zero points with adiabatic contraction requires low-c halos, but this model has V_2.2~1.8 V_vir (where V_2.2 and V_vir are the circular velocity at 2.2 disk scale lengths and the virial radius, respectively) which will be unable to match the luminosity function (LF). Similarly models without adiabatic contraction but standard c also predict high values of V_2.2/V_vir. Models in which disk formation induces an expansion rather than the commonly assumed contraction of the dark-matter halos have V_2.2~1.2 V_vir which allows a simultaneous fit of the LF. This may result from non-spherical, clumpy gas accretion, where dynamical friction transfers energy from the gas to the dark matter. This model requires low lam_gal and m_gal values, contrary to naive expectations. However, the low lam_gal is consistent with the notion that disk galaxies predominantly survive in halos with a quiet merger history, while a low m_gal is also indicated by galaxy-galaxy lensing. The smaller than expected scatter in the RL relation, and the lack of correlation between the residuals of the VL and RL relations, respectively, imply that the scatter in lam_gal and in c need to be smaller than predicted for LCDM halos, again consistent with the idea that disk galaxies preferentially reside in halos with a quiet merger history.
description: 28 pages, 16 figures, ApJ accepted, minor changes from unpublished version, uses emulateapj.cls, high-resolution version available at http://www.ucolick.org/~dutton/65200/hi-res-version/ms.dutton.v2_hr.ps
Τα ποιήματα του Μανουήλ Φιλή για τον Μιχαήλ Ατζύμη. Εισαγωγή – Κριτική έκδοση – Μετάφραση - Σχόλια
Creators: name: Τατάλια, Στυλιανή Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μανουήλ Φιλής
Μιχαήλ Ατζύμης
Δομέστικος των ανατολικών θεμάτων
Manuel Philes
Michael Atzymes
Domestikos of the eastern themes

description: Αντικείμενο της διπλωματικής εργασίας είναι η εξέταση των ποιημάτων του βυζαντινού ποιητή Μανουήλ Φιλή που αφορούν στον Μιχαήλ Ατζύμη, έναν βυζαντινό αξιωματούχο (δομέστικο των ανατολικών θεμάτων) του 14ου αιώνα. Σκοπός της διπλωματικής εργασίας είναι να αντλήσει πληροφορίες από τα ποιήματα του Φιλή ώστε να φωτίσει την προσωπικότητα του Ατζύμη. Στο πρώτο μέρος της εργασίας στόχος είναι να τοποθετηθούν οι δύο άνδρες στην πνευματική κίνηση της εποχής τους και να υπογραμμιστεί ο ρόλος του Ατζύμη ως πάτρονα-χορηγού, που όχι μόνο παραγγέλνει έργα τέχνης ή επιγράμματα, αλλά και στηρίζει οικονομικά τον Φιλή προσφέροντάς του χρήματα ή τροφή. Παράλληλα εξετάζεται και η κοινωνική θέση του Φιλή, καθώς και η σχέση του με τον Ατζύμη. Το δεύτερο μέρος της εργασίας περιλαμβάνει την κριτική έκδοση κάθε ποιήματος, η οποία ακολουθείται τόσο από μετάφραση στη νέα ελληνική όσο και από σχόλια, που εστιάζουν κυρίως σε πληροφορίες ιστορικού και πολιτιστικού περιεχομένου, καθώς και σε παρατηρήσεις για τη γλώσσα και το ύφος του Φιλή.
description: The subject of the thesis is the research of the byzantine poet Manuel Philes’ poems concerning Michael Atzymes, a 14th-century byzantine official (domestikos of the eastern themes). The purpose of the thesis is to derive information from Philes’ poems and to form the outline of Atzymes’ personality. The first part of the thesis aims to place the two men into the spiritual trends of their time and to underline Atzymes’ role as a patron, who not only orders works of art or epigrams, but also helps the impecunious Philes offering him money or food. Philes’ social status and the relationship between the two men are also under examination in the first part. The second part of the thesis consists of the critical edition of each poem, followed by a translation into Modern Greek and an interpretative commentary. In the commentary section the emphasis is given on the historical and cultural information as well as on the merits of Philes’ style and language.
Adapting Behavioral Parent Training as an Interactive Computer Game
Creators: name: Cheung, Emily
name: Lim, Christopher
name: Marshall, Sharise
name: Purdy, Chris
name: Winkler, Christina
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: Behavioral Parent Training
Computer games
Gemstone Team VIRTUAL

description: Behavioral Parent Training (BPT) is a well-established therapy that reduces child externalized
behaviors and parent stress. Although BPT was originally developed for parents of children with
defiant behaviors, the program’s key concepts are relevant to parenting all children. Since
parents might not fully utilize BPT due to cost and program location, we created an online game
as a low-cost, easily accessible alternative or complement to BPT. We tested the game with
nineteen undergraduate students at the University of Maryland. The experimental group
completed pretest survey on core BPT knowledge, played the game, and completed a BPT
posttest, while the control group completed a pretest and posttest survey over a three week
period. Participants in the experimental group also completed a survey to indicate their
satisfaction with the overall program. The experimental group demonstrated significantly higher
levels of BPT knowledge than the control group and high levels of satisfaction. This suggests
that an interactive, online BPT platform is an engaging and accessible way for parents to learn
key concepts.
Spin waves and high-frequency response in layered superconductors with helical magnetic structure
Creators: name: Koshelev, A. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We evaluate the spin-wave spectrum and dynamic susceptibility in a layered superconductors with helical interlayer magnetic structure. We especially focus on the structure in which the moments rotate 90$^{\circ}$ from layer to layer realized in the iron pnictide RbEuFe$_{4}$As$_{4}$. The spin-wave spectrum in superconductors is strongly renormalized due to the long-range electromagnetic interactions between the oscillating magnetic moments. This leads to strong enhancement of the frequency of the mode coupled with uniform field and this enhancement exists only within a narrow range of the c-axis wave vectors of the order of the inverse London penetration depth. The key feature of materials like RbEuFe$_{4}$As$_{4}$ is that this uniform mode corresponds to the maximum frequency of the spin-wave spectrum with respect to c-axis wave vector. As a consequence, the high-frequency surface resistance acquires a very distinct asymmetric feature spreading between the bare and renormalized frequencies. We also consider excitation of spin waves with Josephson effect in a tunneling contact between helical-magnetic and conventional superconductors and study the interplay between the spin-wave features and geometrical cavity resonances in the current-voltage characteristics.
description: 22 pages, 10 figures, accepted to Phys. Rev. B
Improving Defect Prediction Models by Combining Classifiers Predicting Different Defects
Creators: name: Petric, Jean
Publisher: name: UH Research Archive
Year: 2018
Subjects: software defect prediction
prediction modelling
machine learning
static code analysis

description: Background: The software industry spends a lot of money on finding and fixing defects. It utilises software defect prediction models to identify code that is likely to be defective. Prediction models have, however, reached a performance bottleneck. Any improvements to prediction models would likely yield less defects-reducing costs for companies. Aim: In this dissertation I demonstrate that different families of classifiers find distinct subsets of defects. I show how this finding can be utilised to design ensemble models which outperform other state-of-the-art software defect prediction models. Method: This dissertation is supported by published work. In the first paper I explore the quality of data which is a prerequisite for building reliable software defect prediction models. The second and third papers explore the ability of different software defect prediction models to find distinct subsets of defects. The fourth paper explores how software defect prediction models can be improved by combining a collection of classifiers that predict different defective components into ensembles. An additional, non-published work, presents a visual technique for the analysis of predictions made by individual classifiers and discusses some possible constraints for classifiers used in software defect prediction. Result: Software defect prediction models created by classifiers of different families predict distinct subsets of defects. Ensembles composed of classifiers belonging to different families outperform other ensemble and standalone models. Only a few highly diverse and accurate base models are needed to compose an effective ensemble. This ensemble can consistently predict a greater number of defects compared to the increase in incorrect predictions. Conclusion: Ensembles should not use the majority-voting techniques to combine decisions of classifiers in software defect prediction as this will miss correct predictions of classifiers which uniquely identify defects. Some classifiers could be less successful for software defect prediction due to complex decision boundaries of defect data. Stacking based ensembles can outperform other ensemble and stand-alone techniques. I propose new possible avenues of research that could further improve the modelling of ensembles in software defect prediction. Data quality should be explicitly considered prior to experiments for researchers to establish reliable results.
Sharp Boundaries for the Swampland
Creators: name: Caron-Huot, Simon
name: Mazac, Dalimil
name: Rastelli, Leonardo
name: Simmons-Duffin, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reconsider the problem of bounding higher derivative couplings in consistent weakly coupled gravitational theories, starting from general assumptions about analyticity and Regge growth of the S-matrix. Higher derivative couplings are expected to be of order one in the units of the UV cutoff. Our approach justifies this expectation and allows to prove precise bounds on the order one coefficients. Our main tool are dispersive sum rules for the S-matrix. We overcome the difficulties presented by the graviton pole by measuring couplings at small impact parameter, rather than in the forward limit. We illustrate the method in theories containing a massless scalar coupled to gravity, and in theories with maximal supersymmetry.
description: 25+10 pages, 10 figures, v2: typo fixed, references added
TÜRKMEN ALEVİLER-DİYARBAKIR VE ÇEVRESİNDEKİ-
Creators: name: AKMAN, Sabri
Publisher: name: Zenodo
Year: 2019
Subjects: Türkmen Alevi, Din Sosyolojisi

description: Ahmet Taşğın, Türkmen Aleviler-Diyarbakır ve Çevresindeki-, Konya: Çizgi Kitabevi Yayınları 2013, ss.236. ISBN:978-605-5022-28-0 Şüphesiz bir meseleyi doğru çözmek için öncelikle doğru anlamak gerekir. Bu yazıda günümüz hala sorun olarak kalan Alevilik konusunu doğru anlamak üzerine kurgulanan nadir Türkiye’sinde çalışmalardan birinin, Ahmet Taşğın’ın “Türkmen Aleviler-Diyarbakır ve Çevresindeki-” isimli eserinin, tanıtımı yapılmıştır. Kitap giriş, Diyarbakır ve çevresindeki Alevilerin inanç, ibadet, kurum ve sosyal ilişkilerinin incelendiği “Diyarbakır ve Çevresindeki Türkmen Alevileri” ve “Alevi Dini Hayatına Etki Eden Faktörler” başlıklarıyla iki ana bölüm, sonuç ve değerlendirmeden oluşmaktadır. Ayrıca anket formunun eklendiği eserde mülakat verilerinin oluşturduğu yetmiş yedi adet tablo bulunmaktadır.
A new approach for the statistical denoising of Planck interstellar dust polarization data
Creators: name: Blancard, Bruno Regaldo-Saint
name: Allys, Erwan
name: Boulanger, François
name: Levrier, François
name: Jeffrey, Niall
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Dust emission is the main foreground for cosmic microwave background (CMB) polarization. Its statistical characterization must be derived from the analysis of observational data because the precision required for a reliable component separation is far greater than what is currently achievable with physical models of the turbulent magnetized interstellar medium. This letter takes a significant step toward this goal by proposing a method that retrieves non-Gaussian statistical characteristics of dust emission from noisy Planck polarization observations at 353 GHz. We devised a statistical denoising method based on wavelet phase harmonics (WPH) statistics, which characterize the coherent structures in non-Gaussian random fields and define a generative model of the data. The method was validated on mock data combining a dust map from a magnetohydrodynamic simulation and Planck noise maps. The denoised map reproduces the true power spectrum down to scales where the noise power is an order of magnitude larger than that of the signal. It remains highly correlated to the true emission and retrieves some of its non-Gaussian properties. Applied to Planck data, the method provides a new approach to building a generative model of dust polarization that will characterize the full complexity of the dust emission. We also release PyWPH, a public Python package, to perform GPU-accelerated WPH analyses on images.
description: 10 pages, 9 figures, accepted by A&A
Heavy ion collisions and AdS/CFT
Creators: name: Liu, Hong
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We review some recent applications of the AdS/CFT correspondence to heavy ion collisions including a calculation of the jet quenching parameter in N=4 super-Yang-Mills theory and quarkonium suppression from velocity scaling of the screening length for a heavy quark-antiquark pair. We also briefly discuss differences and similarities between QCD and N=4 Super-Yang-Mills theory.
description: Plenary talk given at Quark Matter 2006, Shanghai, China, 14-20 Nov 2006; to appear in the conference proceeding
Evaluating the Feasability of Implementing a Green Roof Retrofit on Pitched Residential Roofs
Creators: name: Borchers, Benjamin
name: Chow, Connie
name: Doelp, Matthew
name: Ent, Lawrence
name: Hakes, Raquel
name: Heo, Chung
name: Hunsley, Kenneth
name: Sinha, Sree
name: Swaim, Courtney
name: Whittaker, Anna
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: Green roofs
Residential buildings
Gemstone Team SO GREEN

description: Green roofs are one solution to stormwater runoff which is a major environmental problem. However, the majority of green roofs are primarily implemented on flat roofed commercial buildings and not residential homes with sloped roofs. Team SO GREEN designed a light-weight green roof system retrofit for residential homes. Between June and November 2014, green roof performance data was collected and compared between the designed sloped roofs and a non-sloped control. The sloped design performed well and one test slope was improved with a recirculating irrigation system. An economic analysis was made and a focus group determined preliminary consumer interest, aesthetic preferences, and barriers. This study enriches the body of knowledge regarding bringing green roof systems to the residential home market.
Dimensional reduction at a quantum critical point
Creators: name: Sebastian, S. E.
name: Harrison, N.
name: Batista, C. D.
name: Balicas, L.
name: Jaime, M.
name: Sharma, P. A.
name: Kawashima, N.
name: Fisher, I. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Competition between electronic ground states near a quantum critical point (QCP) - the location of a zero-temperature phase transition driven solely by quantum-mechanical fluctuations - is expected to lead to unconventional behaviour in low-dimensional systems. New electronic phases of matter have been predicted to occur in the vicinity of a QCP by two-dimensional theories, and explanations based on these ideas have been proposed for significant unsolved problems in condensed-matter physics, such as non-Fermi-liquid behaviour and high-temperature superconductivity. But the real materials to which these ideas have been applied are usually rendered three-dimensional by a finite electronic coupling between their component layers; a two-dimensional QCP has not been experimentally observed in any bulk three-dimensional system, and mechanisms for dimensional reduction have remained the subject of theoretical conjecture. Here we show evidence that the Bose-Einstein condensate of spin triplets in the three-dimensional Mott insulator BaCuSi2O6 provides an experimentally verifiable example of dimensional reduction at a QCP. The interplay of correlations on a geometrically frustrated lattice causes the individual two-dimensional layers of spin-1/2 Cu2+ pairs (spin dimers) to become decoupled at the QCP, giving rise to a two-dimensional QCP characterized by power law scaling distinctly different from that of its three-dimensional counterpart. Thus the very notion of dimensionality can be said to acquire an 'emergent' nature: although the individual particles move on a three-dimensional lattice, their collective behaviour occurs in lower-dimensional space.
description: 14 pages, 4 figures
Center group dominance in quark confinement
Creators: name: Ikeda, Ryu
name: Kondo, Kei-Ichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the color $N$ dependent area law falloffs of the double-winding Wilson loop averages for the $SU(N)$ lattice gauge theory obtained in the preceding works are reproduced from the corresponding lattice Abelian gauge theory with the center gauge group $Z_N$. This result indicates the center group dominance in quark confinement.
description: 12pages, 5 figures, published in PTEP
Quantum corrections to the effective neutrino mass operator in 5D MSSM
Creators: name: Deandrea, Aldo
name: Hosteins, Pierre
name: Oertel, Micaela
name: Welzel, Julien
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss in detail a five-dimensional Minimal Supersymmetric Standard Model compactified on $S^1/Z_2$ extended by the effective Majorana neutrino mass operator. We study the evolution of neutrino masses and mixings. Masses and angles, in particular the atmospheric mixing angle $θ_{23}$, can be significantly lowered at high energies with respect to their value at low energy.
description: 23 pages, 13 figures