cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topical Issues for Particle Acceleration Mechanisms in Astrophysical Shocks
Creators: name: Baring, Matthew G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Particle acceleration at plasma shocks appears to be ubiquitous in the universe, spanning systems in the heliosphere, supernova remnants, and relativistic jets in distant active galaxies and gamma-ray bursts. This review addresses some of the key issues for shock acceleration theory that require resolution in order to propel our understanding of particle energization in astrophysical environments. These include magnetic field amplification in shock ramps, the non-linear hydrodynamic interplay between thermal ions and their extremely energetic counterparts possessing ultrarelativistic energies, and the ability to inject and accelerate electrons in both non-relativistic and relativistic shocks. Recent observational developments that impact these issues are summarized. While these topics are currently being probed by astrophysicists using numerical simulations, they are also ripe for investigation in laboratory experiments, which potentially can provide valuable insights into the physics of cosmic shocks.
description: 13 pages, no figures. Invited review, accepted for publication in Astrophysics and Space Science, as part of the HEDLA 2006 conference proceedings
Successful illiterate men
Creators: name: Clark, Roger A.
Publisher: name: University of British Columbia
Year: 2008

description: Despite widespread concern and many attempts to eradicate illiteracy, it persists. Part of the problem is that too little is known about the people for whom literacy programs are designed. Such programs may fail if they are designed by people who view their clientele as deficient. This perspective of deficiency is based on two assumptions: first, that literacy is a necessary pre-condition for success in life and second, that illiterate people are lacking in self-confidence, are unable to maintain employment, are poor, and are caught in a cycle of deprivation and under education. This study examines the characteristics and perceptions of illiterate men who have achieved varying degrees of financial and employment success but do not read beyond the grade-three level. The findings indicate that in spite of deficiencies in reading, illiterate individuals learn a number of coping techniques and manifest innumerable skills and achievements. Thus, a "deficiency" oriented intervention program that over-emphasizes the importance of literacy diminishes the observable accomplishments of the illiterate adult and may fail. Intervention programs designed for illiterate adults need to bolster the participants' sense of accomplishment and teach coping skills as well as literacy skills.
Turbulence transition and the edge of chaos in pipe flow
Creators: name: Schneider, Tobias M
name: Eckhardt, Bruno
name: Yorke, James A
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The linear stability of pipe flow implies that only perturbations of sufficient strength will trigger the transition to turbulence. In order to determine this threshold in perturbation amplitude we study the \emph{edge of chaos} which separates perturbations that decay towards the laminar profile and perturbations that trigger turbulence. Using the lifetime as an indicator and methods developed in (Skufca et al, Phys. Rev. Lett. {\bf 96}, 174101 (2006)) we show that superimposed on an overall $1/\Re$-scaling predicted and studied previously there are small, non-monotonic variations reflecting folds in the edge of chaos. By tracing the motion in the edge we find that it is formed by the stable manifold of a unique flow field that is dominated by a pair of downstream vortices, asymmetrically placed towards the wall. The flow field that generates the edge of chaos shows intrinsic chaotic dynamics.
description: 4 pages, 5 figures
Pre-processing of Galaxies in the Early Stages of Cluster Formation in Abell 1882 at $z$=0.139
Creators: name: Sengupta, Aparajita
name: Keel, William C.
name: Morrison, Glenn
name: Windhorst, Rogier A.
name: Miller, Neal
name: Smith, Brent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A rare opportunity to distinguish internal and environmental effects on galaxy evolution is afforded by "Supergroups", systems which are rich and massive but include several comparably rich substructures, surrounded by filaments. We present here a multiwavelength photometric and spectroscopic study of the galaxy population in the Supergroup Abell 1882 at $z$=0.139, combining new data from the MMT and Hectospec with archival results from the Galaxy And Mass Assembly (GAMA) survey, the Sloan Digital Sky Survey (SDSS), NED, the Gemini Multi-Object Spectrograph (GMOS) and Galaxy Evolution Explorer (GALEX). These provide spectroscopic classifications for 526 member galaxies, across wide ranges of local density and velocity dispersion. We identify three prominent filaments along which galaxies seem to be entering the Supergroup (mostly in E-W directions). Abell 1882 has a well-populated red sequence, containing most galaxies with stellar mass $>$ $10^{10.5}$ $M_{sun}$, and a pronounced color-density relation even within its substructures. Thus, galaxy evolution responds to the external environment as strongly in these unrelaxed systems as we find in rich and relaxed clusters. From these data, local density remains the primary factor with a secondary role for distance from the inferred center of the entire structure's potential well. Effects on star formation, as traced by optical and near-UV colors, depend on galaxy mass. We see changes in lower-mass galaxies (M $
description: 26 pages, 16 figures, 5 tables. Submitted in The Astrophysical Journal
Η Εθνική προσφορά του Μητροπολίτου Ρόδου Αποστόλου Τρύφωνος
Creators: name: Μαναρουλάς, Αλέξανδρος Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Απόστολος Τρύφωνος
Εθνική προσφορά.
Μητροπολίτης Ρόδου
Apostolos Trifonos
National offering
Archbishop of Rhodes

description: Εμβληματική αδιαμφησβήτητα και πολυσχιδής η προσωπικότητα του Μητροπολίτου Ρόδου Αποστόλου Τρύφωνος, μιας και θα είναι αυτός που θα επικριθεί αλλά και επαινεθεί από πολλούς στο πέρασμα των χρόνων. Η Εθνική του προσφορά είναι τεράστια μιας και θα εργαστεί για την προώθηση των εκκλησιαστικών πραγμάτων της Δωδεκανήσου, καθώς και των κοινοτικών και εκπαιδευτικών θεμάτων της Ρόδου. Ένθερμος υποστηρικτής της ένωσης της Δωδεκανήσου με την μητέρα Ελλάδα Ο Μητροπολίτης Απόστολος θα γίνει επίσης ο εμπνευστής των Συλλαλητηρίων του αιματηρού Πάσχα του 1919 , στο οποίο διακηρύττεται η επιθυμία του Δωδεκανησιακού λαού για ένωση με την Ελλάδα
description: Emblematic physiognomy and pluralistic personality of Metropolitan of Rhodes Apostolos Trifonos, although he was criticized and in the other hand he received the accolades through the years. His national offering is enormous. He worked for the advocacy of the ecclesiastic issues of Dodecanιsos and communal and educational issues of Rhodes. Passionate adherent of the Dodekanisos inclusion with mother Greece. Metropolitan Apostolos is the instigator of the protestations of bloody Easter of 1919, which declared the desire of Dodekanesse people to include with Greece
description: Σε συνεργασία με το τμήμα Ποιμαντικής ΕΚΠΑ
Integration of Holomorphic Lie Algebroids
Creators: name: Laurent-Gengoux, Camille
name: Stienon, Mathieu
name: Xu, Ping
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We prove that a holomorphic Lie algebroid is integrable if, and only if, its underlying real Lie algebroid is integrable. Thus the integrability criteria of Crainic-Fernandes do also apply in the holomorphic context without any modification. As a consequence we give another proof of the following theorem: a holomorphic Poisson manifold is integrable if, and only if, its real (or imaginary) part is integrable as a real Poisson manifold.
description: 26 pages, second part of arXiv:0707.4253 which was split into two, v2: example 3.19 and section 3.7 added
Improved measurements of branching fractions and CP partial rate asymmetries for $B\toωK$ and $B\toωπ$
Creators: name: Jen, by C. -M.
name: Chang, P.
name: Abe, K.
name: Abe, K.
name: Adachi, I.
name: Aihara, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report improved measurements of $B$ to pseudoscalar-vector decays containing an $ω$ meson in the final states. Our results are obtained from a data sample that contains $388\times 10^{6}$ $B\bar{B}$ pairs accumulated at the $Υ(4S)$ resonance, with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We measure the following branching fractions: ${\mathcal B}(B^{+} \to ωK^{+}) = [8.1\pm0.6({\rm stat.})\pm{0.6}({\rm syst.})]\times 10^{-6}$, ${\mathcal B}(B^{+} \to ωπ^{+}) = [6.9\pm{0.6}({\rm stat.})\pm{0.5}({\rm syst.})]\times 10^{-6}$, and ${\mathcal B}(B^{0} \to ωK^{0}) = [4.4^{+0.8}_{-0.7}({\rm stat.})\pm{0.4}({\rm syst.})]\times 10^{-6}.$ The partial width ratio $\frac{Γ(B^{+}\to ωK^{+})}{Γ(B^{0}\to ωK^{0})}$ = $1.8\pm0.4({\rm stat.})\pm0.1({\rm sys.})$. We also set the 90% confidence level upper limit ${\mathcal B}(B^{0} \to ωπ^{0}) < 2.0\times 10^{-6}.$ In addition, we obtain the partial rate asymmetries ${\mathcal A}_{CP} = 0.05^{+0.08}_{-0.07}(\rm {stat.}) \pm 0.01(\rm {syst.})$ for $B^{+} \to ωK^{+}$, and ${\mathcal A}_{CP} = -0.02 \pm 0.09(\rm {stat.}) \pm 0.01(\rm {syst.})$ for $B^{+}\to ωπ^{+}$.
description: 6 pages, 2 figures, 2 tables, accepted by PRD(RC)
Twine: An Embedded Trusted Runtime for WebAssembly
Creators: name: Ménétrey, Jämes
name: Pasin, Marcelo
name: Felber, Pascal
name: Schiavoni, Valerio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: WebAssembly is an increasingly popular lightweight binary instruction format, which can be efficiently embedded and sandboxed. Languages like C, C++, Rust, Go, and many others can be compiled into WebAssembly. This paper describes Twine, a WebAssembly trusted runtime designed to execute unmodified, language-independent applications. We leverage Intel SGX to build the runtime environment without dealing with language-specific, complex APIs. While SGX hardware provides secure execution within the processor, Twine provides a secure, sandboxed software runtime nested within an SGX enclave, featuring a WebAssembly system interface (WASI) for compatibility with unmodified WebAssembly applications. We evaluate Twine with a large set of general-purpose benchmarks and real-world applications. In particular, we used Twine to implement a secure, trusted version of SQLite, a well-known full-fledged embeddable database. We believe that such a trusted database would be a reasonable component to build many larger application services. Our evaluation shows that SQLite can be fully executed inside an SGX enclave via WebAssembly and existing system interface, with similar average performance overheads. We estimate that the performance penalties measured are largely compensated by the additional security guarantees and its full compatibility with standard WebAssembly. An in-depth analysis of our results indicates that performance can be greatly improved by modifying some of the underlying libraries. We describe and implement one such modification in the paper, showing up to $4.1\times$ speedup. Twine is open-source, available at GitHub along with instructions to reproduce our experiments.
description: This publication incorporates results from the VEDLIoT project, which received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 957197
Self-Averaging in the Three Dimensional Site Diluted Heisenberg Model at the critical point
Creators: name: Gordillo-Guerrero, A.
name: Ruiz-Lorenzo, J. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the self-averaging properties of the three dimensional site diluted Heisenberg model. The Harris criterion \cite{critharris} states that disorder is irrelevant since the specific heat critical exponent of the pure model is negative. According with some analytical approaches \cite{harris}, this implies that the susceptibility should be self-averaging at the critical temperature ($R_χ=0$). We have checked this theoretical prediction for a large range of dilution (including strong dilution) at critically and we have found that the introduction of scaling corrections is crucial in order to obtain self-averageness in this model. Finally we have computed critical exponents and cumulants which compare very well with those of the pure model supporting the Universality predicted by the Harris criterion.
description: 11 pages, 11 figures, 14 tables. New analysis (scaling corrections in the g2=0 scenario) and new numerical simulations. Title and conclusions change
A Study of the DsJ(2317) and DsJ(2460) Mesons in Inclusive ccbar Production Near sqrt(s) = 10.6 GeV
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A study of the $D_{sJ}^*(2317)^+$ and $D_{sJ}(2460)^+$ mesons in inclusive $c\bar{c}$ production is presented using 232 ${\rm fb}^{-1}$ of data collected by the BaBar experiment near $\sqrt{s} = 10.6$ \gev. Final states consisting of a $D_s^+$ meson along with one or more $π^0$, $π^\pm$, or $γ$ particles are considered. Estimates of the mass and limits on the width are provided for both mesons and for the $D_{s1}(2536)^+$ meson. A search is also performed for neutral and doubly-charged partners of the $D_{sJ}^*(2317)^+$ meson.
description: 28 pages, 33 postscript figures, 11 tables, Physics Review D74 (2006) 032007
Σχεδιασμός και δημιουργία Ιατρικής Βάσης δεδομένων για την παρακολούθηση ασθενών και εφαρμογή σε Νοσοκομειακό Ιατρείο
Creators: name: Δημητροπούλου, Ιωάννα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ιατρική Βάση Δεδομένων
Microsoft Access
Ιατρείο Πόνου
Medical Database
Pain Clinic

description: Η παρούσα εργασία έχει ως στόχο αφενός την μελέτη των πληροφοριακών συστημάτων και την εφαρμογή αυτών στον χώρο της Υγείας και αφετέρου την μελέτη και δημιουργία μιας ιατρικής βάσης δεδομένων με σκοπό να χρησιμοποιηθεί στο ιατρείο πόνου ενός κρατικού νοσοκομείου. Αρχικά περιγράφεται ο ορισμός του πληροφοριακού συστήματος καθώς και οι διακρίσεις του και στη συνέχεια παρουσιάζεται η αναγκαιότητα εισαγωγής ενός τέτοιου συστήματος στην Υγεία. Γίνεται αναφορά για τη σημερινή κατάσταση των πληροφοριακών συστημάτων στα νοσοκομεία της Ελλάδας τόσο σε δημόσιο όσο σε και ιδιωτικό τομέα. Κατόπιν παρουσιάζονται κάποιες εφαρμογές, ο ηλεκτρονικός ιατρικός φάκελος, οι κάρτες υγείας και η τηλεϊατρική και εν συνεχεία γίνεται αναφορά στο τί είναι οι βάσεις δεδομένων, τί συστήματα βάσεων και τί συστήματα διαχείρισης βάσεων δεδομένων υπάρχουν και τι πλεονεκτήματα προσφέρει η Microsoft Access. Τέλος, γίνεται περιγραφή τι είναι ένα ιατρείο πόνου και ποιους ασθενείς καλύπτει. Γίνεται αναφορά αλλά και σύγκριση μεταξύ του πως διαχειρίζεται τους φακέλους των ασθενών χωρίς ηλεκτρονική βάση δεδομένων και τα οφέλη μιας τέτοιας. Γίνεται αντιπαράθεση της παλαιάς βάσης δεδομένων με την καινούργια που δημιουργήθηκε και ακολουθεί μια σύντομη περιγραφή της
description: The purpose of this thesis is, on one hand to study information systems and their application in the field of Health, and on the other hand to design and create a medical database for use in a state hospital pain clinic. In the first chapters we describe the definition of an information system and its four distinctions, then we introduce the need of such systems in Health. Refence is made to the current state of information systems in Greek hospitals in both public and private hospitals and clinics. The next chapters in this thesis are about specific applications such as medical electronic record, health cards and telemedicine. Following that, refence is made to what databases are, what kind of systems management of data bases exists and the advantages Microsoft Access has to provide us. Finally, a description of what a pain clinic is and what patients it covers is made. A reference is also made to a comparison of how a state-of-the-art clinic currently operates and how it might work if there was an electronic database. The old database is contrasted with the new one (created during this thesis) and a brief description follows
The geometric classification of $2$-step nilpotent algebras and applications
Creators: name: Ignatyev, Mikhail
name: Kaygorodov, Ivan
name: Popov, Yury
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We give a geometric classification of complex $n$-dimensional $2$-step nilpotent (all, commutative and anticommutative) algebras. Namely, has been found the number of irreducible components and their dimensions. As a corollary, we have a geometric classification of complex $5$-dimensional nilpotent associative algebras. In particular, it has been proven that this variety has $14$ irreducible components and $9$ rigid algebras.
description: Theorem C is corrected. arXiv admin note: text overlap with arXiv:2007.01829, arXiv:2001.00253
Primes in a prescribed arithmetic progression dividing the sequence a^k+b^k
Creators: name: Moree, P.
name: Sury, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11N37, 11R45

description: Given positive integers a,b,c and d such that c and d are coprime we show that the primes p=c(mod d)dividing a^k+b^k for some k>=1 have a natural density and explicitly compute this density. We demonstrate our results by considering some claims of Fermat that he made in a 1641 letter to Mersenne.
description: 22 pages, 13 tables
Conceptual similarity and communicative need shape colexification: an experimental study
Creators: name: Karjus, Andres
name: Blythe, Richard A.
name: Kirby, Simon
name: Wang, Tianyu
name: Smith, Kenny
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Colexification refers to the phenomenon of multiple meanings sharing one word in a language. Cross-linguistic lexification patterns have been shown to be largely predictable, as similar concepts are often colexified. We test a recent claim that, beyond this general tendency, communicative needs play an important role in shaping colexification patterns. We approach this question by means of a series of human experiments, using an artificial language communication game paradigm. Our results across four experiments match the previous cross-linguistic findings: all other things being equal, speakers do prefer to colexify similar concepts. However, we also find evidence supporting the communicative need hypothesis: when faced with a frequent need to distinguish similar pairs of meanings, speakers adjust their colexification preferences to maintain communicative efficiency, and avoid colexifying those similar meanings which need to be distinguished in communication. This research provides further evidence to support the argument that languages are shaped by the needs and preferences of their speakers.
Implementing the MULTI-VP coronal model in EUHFORIA: test case results and comparisons with the WSA coronal model
Creators: name: Samara, Evangelia
name: Pinto, Rui F.
name: Magdalenic, Jasmina
name: Wijsen, Nicolas
name: Jercic, Veronika
name: Scolini, Camilla
name: Jebaraj, Immanuel C.
name: Rodriguez, Luciano
name: Poedts, Stefaan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this study, we focus on improving EUHFORIA (European Heliospheric Forecasting Information Asset), a recently developed 3D MHD space weather prediction tool. EUHFORIA consists of two parts, covering two spatial domains; the solar corona and the inner heliosphere. For the first part, the semi-empirical Wang-Sheeley-Arge (WSA) model is used by default, which employs the Potential Field Source Surface (PFSS) and Schatten Current Sheet (SCS) models to provide the necessary solar wind plasma and magnetic conditions above the solar surface, at 0.1 AU, that serve as boundary conditions for the inner heliospheric part. Herein, we present the first results of the implementation of an alternative coronal model in EUHFORIA, the so-called MULTI-VP model. We compared the output of the default coronal model with the output from MULTI-VP at the inner boundary of the heliospheric domain of EUHFORIA in order to understand differences between the two models, before they propagate to Earth. We also compared the performance of WSA+EUHFORIA-heliosphere and MULTI-VP+EUHFORIA-heliosphere against in situ observations at Earth. In the frame of this study, we considered two different high-speed stream cases, one during a period of low solar activity and one during a period of high solar activity. We also employed two different magnetograms, i.e., GONG and WSO. Our results show that the choice of both the coronal model and the magnetogram play an important role on the accuracy of the solar wind prediction. However, it is not clear which component plays the most important role for the modeled results obtained at Earth. A statistical analysis with an appropriate number of simulations is needed to confirm our findings.
description: Accepted for publication in Astronomy and Astrophysics
Holographic entanglement entropy probes (non)locality
Creators: name: Barbon, Jose L. F.
name: Fuertes, Carlos A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the short-distance structure of geometric entanglement entropy in certain theories with a built-in scale of nonlocality. In particular we examine the cases of Little String Theory and Noncommutative Yang-Mills theory, using their AdS/CFT descriptions. We compute the entanglement entropy via the holographic ansatz of Ryu and Takayanagi to conclude that the area law is violated at distance scales that sample the nonlocality of these models, being replaced by an extensive volume law. In the case of the noncommutative model, the critical length scale that reveals the area/volume law transition is strongly affected by UV/IR mixing effects. We also present an argument showing that Lorentz symmetry tends to protect the area law for theories with field-theoretical density of states.
description: 24 pages and 8 figures; added references, corrected some typos and added a full NEW SECTION with an explicit result linking holography, Lorentz invariance and area law of entanglement entropy
A Lattice Computation of the First Moment of the Kaon's Distribution Amplitude
Creators: name: Boyle, P. A.
name: Donnellan, M. A.
name: Flynn, J. M.
name: Juttner, A.
name: Noaki, J.
name: Sachrajda, C. T.
name: Tweedie, R. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a lattice computation of the first moment of the kaon's leading-twist distribution amplitude. The results were computed using ensembles with 2+1 dynamical flavours with the domain wall fermion action and Iwasaki gauge action from the RBC and UKQCD joint dataset. The first moment is non-zero because of SU(3)-breaking effects, and we find that we are able to measure these effects very clearly. We observe the expected chiral behaviour and finally obtain (2GeV) = 3/5*a_K^1(2GeV) = 0.032(3), which agrees very well with results obtained using sum-rules, but with a significantly smaller error.
description: 14 pages, 4 figures, minor changes
A priori estimates of smoothness of solutions to difference Bellman equations with linear and quasilinear operators
Creators: name: Krylov, N. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 65M15, 35J60, 93E20

description: A priori estimates for finite-difference approximations for the first and second order derivatives are obtained for solutions of parabolic equations described in the title.
description: 36 pages
Gradual Fine-Tuning for Low-Resource Domain Adaptation
Creators: name: Xu, Haoran
name: Ebner, Seth
name: Yarmohammadi, Mahsa
name: White, Aaron Steven
name: Van Durme, Benjamin
name: Murray, Kenton
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Fine-tuning is known to improve NLP models by adapting an initial model trained on more plentiful but less domain-salient examples to data in a target domain. Such domain adaptation is typically done using one stage of fine-tuning. We demonstrate that gradually fine-tuning in a multi-stage process can yield substantial further gains and can be applied without modifying the model or learning objective.
description: Adapt-NLP, EACL 2021
title: Adenomatoid odontogenic tumour: A rare maxillo-facial tumour
Creators: name: Vaz Dias, Marta
Publisher: name: EURORAD
Year: 2024
Subjects: subject: Paediatric radiology
subject: Head and neck
subject: Conventional radiography
subject: CT
subject: MR
subject: Clinical Case

description: Clinical History: A 14-year-old patient who recently moved to Portugal was referred to an oncology consultation at a paediatrics hospital due to a very large, hard lesion in the mid-level of the right hemiface, which had been present for two years. The patient denied any pain.

description: 14 years, female
The secrets of the nearest starburst cluster: II. The present-day mass function in NGC 3603
Creators: name: Stolte, Andrea
name: Brandner, Wolfgang
name: Brandl, Bernhard
name: Zinnecker, Hans
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on deep VLT/ISAAC JHK photometry, we have derived the present-day mass function of the central starburst cluster NGC 3603 YC (Young Cluster) in the giant HII region NGC 3603. The effects of field contamination, individual reddening, and a possible binary contribution are investigated. The MF slopes resulting from the different methods are compared, and lead to a surprisingly consistent cluster MF with a slope of Gamma = -0.9 +/- 0.15. Analyzing different radial annuli around the cluster core, no significant change in the slope of the MF is observed. However, mass segregation in the cluster is evidenced by the increasing depletion of the high-mass tail of the stellar mass distribution with increasing radius. We discuss the indications of mass segregation with respect to the changes observed in the binned and cumulative stellar mass functions, and argue that the cumulative function as well as the fraction of high- to low-mass stars provide better indicators for mass segregation than the MF slope alone. (abridged)
description: accepted for publication in AJ A high-resolution version of the preprint can be found at http://www.mpia.de/homes/brandner/pubs/ngc3603_imf.pdf
Making silence knowledge : towards the educational implications of intimate childhood sexual assault
Creators: name: Wisewoolf, Joanna
Publisher: name: University of British Columbia
Year: 2008

description: "How can I know what I know if I don't know what you have done to my body?" I am a woman victim, survivor, and healer of intimate childhood sexual assault. I remembered these assaults when I was in my early thirties, but did not deal with the assaults, family denial of them, or the emotional, intellectual, physical, sexual and spiritual consequences of the assaults and denial until writing this thesis. My own knowing -- my thinking, confidence, memory, and my sense of being able to speak and contribute to the truths of the world -- has been contaminated by the assaults, the family denial, and my lived consequences of the assaults. In this research, I work to make my silence knowledge through intimate reflective autobiography. First, I explore the literature of intimate assault from the perspective of silence and knowing. Then, I explore the educational literature of women and knowing from the perspective of intimate assault. Then, I relate my crone/ology of making silence knowledge. Then, I testify to my experiences of intimate assault and healing in a series of narrative poems. Finally, I conclude with theoretical frameworks of assault, silence and healing, and with implications for educators' personal action and educational praxis. We are all implicated in the oppression and betrayals of intimate childhood sexual assault. Our silence as assailants, witnesses and victims protects and condones the assaults. When we develop our felt sense of intimate assault, we become knowing witnesses, survivors and healers able to resist intimate assault and other forms of emotional, intellectual, physical, sexual and spiritual abuse and create knowledge based on the truths of women’s experiences. This work of making silence knowledge stretches from individual personal awareness to the content, processes, relationships, structures, and goals of educational institutions. Making silence knowledge is the work of educators committed to naming and resisting women’s oppression and the related oppressions of race, culture, class, age, and sexual orientation within our educational praxis.
Metallicity-dependent nucleosynthetic yields of Type Ia supernovae originating from double detonations of sub-M$_{\text{Ch}}$ white dwarfs
Creators: name: Gronow, Sabrina
name: Cote, Benoit
name: Lach, Florian
name: Seitenzahl, Ivo R.
name: Collins, Christine E.
name: Sim, Stuart A.
name: Roepke, Friedrich K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Double detonations in sub-Chandrasekhar mass carbon-oxygen white dwarfs with helium shell are a potential explosion mechanism for a Type Ia supernova (SNe Ia). It comprises a shell detonation and subsequent core detonation. The focus of our study is on the effect of the progenitor metallicity on the nucleosynthetic yields. For this, we compute and analyse a set of eleven different models with varying core and shell masses at four different metallicities each. This results in a total of 44 models at metallicities between 0.01$Z_\odot$ and 3$Z_\odot$. Our models show a strong impact of the metallicity in the high density regime. The presence of $^{22}$Ne causes a neutron-excess which shifts the production from $^{56}$Ni to stable isotopes such as $^{54}$Fe and $^{58}$Ni in the $α$-rich freeze-out regime. The isotopes of the metallicity implementation further serve as seed nuclei for additional reactions in the shell detonation. Most significantly, the production of $^{55}$Mn increases with metallicity confirming the results of previous work. A comparison of elemental ratios relative to iron shows a relatively good match to solar values for some models. Super-solar values are reached for Mn at 3$Z_\odot$ and solar values in some models at $Z_\odot$. This indicates that the required contribution of SNe Ia originating from Chandrasekhar mass WDs can be lower than estimated in orevious work to reach solar values of [Mn/Fe] at [Fe/H]$=0$. Our galactic chemical evolution models suggest that SNe Ia from sub-Chandrasekhar mass white dwarfs, along with core-collapse supernovae, could account for more than 80% of the solar Mn abundance. Using metallicity-dependent SN Ia yields helps to reproduce the upward trend of [Mn/Fe] as a function of metallicity for the solar neighborhood. These chemical evolution predictions, however, depend on the massive star yields adopted in the calculations.
description: accepted for publication by A&A
First X-ray observations of the young pulsar J1357-6429
Creators: name: Zavlin, Vyacheslav E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first short Chandra and XMM-Newton observations of the young and energetic pulsar J1357-6429 provided strong indications of a tail-like pulsar-wind nebula associated with this object, as well as pulsations of its X-ray flux with a pulsed fraction above 50% and a thermal component dominating at lower photon energies (below 2 keV). The elongated nebula is very compact in size and may be interpreted as evidence for a pulsar jet. The thermal radiation is most plausibly emitted from the entire neutron star surface of a 10 km radius and a 1.0+/-0.1 K temperature, covered with a magnetized hydrogen atmosphere. At higher energies the pulsar's emission is of a nonthermal (magnetospheric) origin, with a power-law spectrum of a photon index of 1.1-1.3. This makes the X-ray properties of PSR J1357-6429 very similar to those of the youngest pulsars J1119-6127 and Vela with a detected thermal radiation.
description: Minor changes, including the reference to Esposito et al. (2007 A&A, 467, L45). Accepted by ApJ Letters
Σχέδιο ορολογίας στο πεδίο της βιολογικής φυτοπροστασίας σε συνεργασία με τη Μονάδα Ορολογίας του Παγκόσμιου Οργανισμού Διανοητικής Ιδιοκτησίας (WIPO)
Creators: name: Γαρούφα, Ευριδίκη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Σχέδιο ορολογίας
Βιολογική φυτοπροστασία
Εργαλεία ορολογίας
Terminology project
Biological plant protection
Terminology tools

description: Η παρούσα διπλωματική εργασία εκπονήθηκε σε συνεργασία με τη μονάδα ορολογίας του τμήματος μετάφρασης του WIPO. Στόχος της παρούσας αποτέλεσε η εξαγωγή και τεκμηρίωση 50 όρων που ανήκουν στο υποπεδίο της βιολογικής φυτοπροστασίας για το ζεύγος γλωσσών αγγλικά-ελληνικά με σκοπό την αξιοποίησή τους από τη βάση ορολογικών δεδομένων του WIPO, που φέρει την ονομασία WIPO Pearl. Αρχικά, συγκεντρώσαμε τους όρους και τους περάσαμε σε υπολογιστικό φύλλο excel συμπληρώνοντας τις εξής παραμέτρους: όρος, πηγή όρου, επεξηγηματικό συγκείμενο και πηγή επεξηγηματικού συγκειμένου. Στη συνέχεια, για την ολοκλήρωση της διπλωματικής έγινε χρήση ηλεκτρονικών εργαλείων με τη βοήθεια των οποίων αντλήθηκαν τα στοιχεία που ζητούσαμε για τον κάθε όρο αντίστοιχα και ακολούθως έγινε η δόμηση των εννοιολογικών σχέσεων μεταξύ των όρων. Η διπλωματική εργασία, όπως αυτή συντάχθηκε, περιλαμβάνει σύντομη παρουσίαση του οργανισμού WIPO, του επιλεχθέντος πεδίου καθώς και του υλικού αναφοράς και τεκμηρίωσης στο οποίο ανατρέξαμε. Τέλος, γίνεται λόγος για τις δυσκολίες που αντιμετωπίσαμε ενώ παραθέτεται και παράρτημα του αγγλικού και ελληνικού σώματος κειμένων και πίνακας με την ορολογία σε μορφή excel
description: The present thesis was conducted in collaboration with the WIPO PCT Terminology Unit. The aim was to extract and document 50 terms in the domain of biopesticides for the language pair English- Greek in order for them to be used from the Terminology Unit WIPO Pearl. Firstly, we compiled the terms and we registered them on excel file covering the following information: term, term reference, defining context and defining context reference. Afterwards, for the completion of the thesis, electronic tools were used in order to collect all the useful data for each term and then we proceeded with the building of concept relations between the terms. The thesis, as it was written, includes a short presentation of WIPO, of the domain in research and the main reference and documentation works that we looked for information. Finally, we discussed the difficulties we encountered while we also include appendices of both corpuses- the English and the Greek one, and a terminology database in excel format
Liquid-liquid coexistence in the phase diagram of a fluid confined in fractal porous materials
Creators: name: De Grandis, V.
name: Gallo, P.
name: Rovere, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Multicanonical ensemble sampling simulations have been performed to calculate the phase diagram of a Lennard-Jones fluid embedded in a fractal random matrix generated through diffusion limited cluster aggregation. The study of the system at increasing size and constant porosity shows that the results are independent from the matrix realization but not from the size effects. A gas-liquid transition shifted with respect to bulk is found. On growing the size of the system on the high density side of the gas-liquid coexistence curve it appears a second coexistence region between two liquid phases. These two phases are characterized by a different behaviour of the local density inside the interconnected porous structure at the same temperature and chemical potential.
description: 5 pages, 4 figures. To be published in Europhys. Letters
Chiral magnetic effect reveals the topology of gauge fields in heavy-ion collisions
Creators: name: Kharzeev, Dmitri E.
name: Liao, Jinfeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The topological structure of vacuum is the cornerstone of non-Abelian gauge theories describing strong and electroweak interactions within the standard model of particle physics. However, transitions between different topological sectors of the vacuum (believed to be at the origin of the baryon asymmetry of the Universe) have never been observed directly. An experimental observation of such transitions in Quantum Chromodynamics (QCD) has become possible in heavy-ion collisions, where the chiral magnetic effect converts the chiral asymmetry (generated by topological transitions in hot QCD matter) into an electric current, under the presence of the magnetic field produced by the colliding ions. The Relativistic Heavy Ion Collider program on heavy-ion collisions such as the Zr-Zr and Ru-Ru isobars, thus has the potential to uncover the topological structure of vacuum in a laboratory experiment. This discovery would have far-reaching implications for the understanding of QCD, the origin of the baryon asymmetry in the present-day Universe, and for other areas, including condensed matter physics.
description: 22 pages, 5 figures; preprint version that closely matches the published Perspective article at Nature Reviews Physics [Nature Rev. Phys. 3, no.1, 55-63 (2021)] [https://www.nature.com/articles/s42254-020-00254-6]
Conceptual aspects of line tensions
Creators: name: Schimmele, L.
name: Napiorkowski, M.
name: Dietrich, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We analyze two representative systems containing a three-phase-contact line: a liquid lens at a fluid--fluid interface and a liquid drop in contact with a gas phase residing on a solid substrate. We discuss to which extent the decomposition of the grand canonical free energy of such systems into volume, surface, and line contributions is unique in spite of the freedom one has in positioning the Gibbs dividing interfaces. In the case of a lens it is found that the line tension is independent of arbitrary choices of the Gibbs dividing interfaces. In the case of a drop, however, one arrives at two different possible definitions of the line tension. One of them corresponds seamlessly to that applicable to the lens. The line tension defined this way turns out to be independent of choices of the Gibbs dividing interfaces. In the case of the second definition,however, the line tension does depend on the choice of the Gibbs dividing interfaces. We provide equations for the equilibrium contact angles which are form-invariant with respect to notional shifts of dividing interfaces which only change the description of the system. Conceptual consistency requires to introduce additional stiffness constants attributed to the line. We show how these constants transform as a function of the relative displacements of the dividing interfaces. The dependences of the contact angles on lens or drop volumes do not render the line tension alone but a combination of the line tension, the Tolman length, and the stiffness constants of the line.
description: 34 pages, 9 figures
Critical Exponents in a Quantum Phase Transition of an Anisotropic 2D Antiferromagnet
Creators: name: Moukouri, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: I use the two-step density-matrix renormalization group method to extract the critical exponents $β$ and $ν$ in the transition from a Néel $Q=(π,π)$ phase to a magnetically disordered phase with a spin gap. I find that the exponent $β$ computed from the magnetic side of the transition is consistent with that of the classical Heisenberg model, but not the exponent $zν$ computed from the disordered side. I also show the contrast between integer and half-integer spin cases.
description: 4 pages, 2 figures
Resonant Dynamical Friction in Nuclear Star Clusters: Rapid Alignment of an Intermediate-mass Black Hole with a Stellar Disk
Creators: name: Szölgyén, Ákos
name: Máthé, Gergely
name: Kocsis, Bence
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the dynamical evolution of an intermediate-mass black hole (IMBH) in a nuclear star cluster hosting a supermassive black hole (SMBH) and both a spherical and a flattened disk-like distribution of stellar-mass objects. We use a direct N-body (phiGPU) and an orbit-averaged (N-ring) numerical integrator to simulate the orbital evolution of stars and the IMBH. We find that the IMBH's orbit gradually aligns with the stellar disk if their mutual initial inclination is less than 90 degree. If it is larger than 90 degree, i.e. counterrotating, the IMBH does not align. Initially, the rate of orbital reorientation increases linearly with the ratio of the mass of the IMBH over the SMBH mass and it is orders of magnitude faster than ordinary (i.e. Chandrasekhar) dynamical friction, particularly for high SMBH masses. The semimajor axes of the IMBH and the stars are approximately conserved. This suggests that the alignment is predominantly driven by orbit-averaged gravitational torques of the stars, a process which may be called resonant dynamical friction. The stellar disk is warped by the IMBH, and ultimately increases its thickness. This process may offer a test for the viability of IMBH candidates in the Galactic Center. Resonant dynamical friction is not limited to IMBHs; any object much more massive than disk particles may ultimately align with the disk. This may have implications for the formation and evolution of black hole disks in dense stellar systems and gravitational wave source populations for LIGO, VIRGO, KAGRA, and LISA.
description: 19 pages, 14 figures, 1 video, accepted by ApJ
Θεραπευτικοί – Αρωματικοί κήποι : η αξία της όσφρησης και οι ευεργετικές επιδράσεις στον άνθρωπο
Creators: name: Παπαδοπούλου, Αρτεμις Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Θεραπευτικοί κήποι
Αρωματικοί κήποι
Όσφρηση
Therapeutic gardens
Aromatic gardens
Smell

description: My dissertation’s title is “Therapeutic and aromatic gardens: the value of olfaction and the beneficial impact on human” and it has been conducted as a part of the master’s program of Landscape architecture in the Aristotle University of Thessaloniki. My thesis is focused on therapeutic gardens and their relation with Landscape architecture referring to olfaction and its influence on humans generally and patients (mentally or physically) specifically. Firstly, some fundamental definitions are given in order to enrich and understand deeper this study. Furthermore the historical retrospect of therapeutic gardens is analyzed from the ancient times until today. The timelessness of therapeutic gardens is based on the human’s interaction with nature. The effect of nature in the person’s physical, mental and emotional health is indisputable. Additionally, this thesis highlights the design of therapeutic gardens and specifically their fundamentals of design and standards. Several examples and types of therapeutic gardens are being mentioned through this paper. The role of aromatic and medicinal plants is defined in the concept of therapeutic gardens and Landscape architecture. Examples of aromatic gardens are given
description: Η μεταπτυχιακή μου διατριβή φέρει τον τίτλο «Θεραπευτικοί – Αρωματικοί κήποι : η αξία της όσφρησης και οι ευεργετικές επιδράσεις στον άνθρωπο» και εκπονήθηκε στα πλαίσια του μεταπτυχιακού της Αρχιτεκτονικής τοπίου, του Αριστοτέλειου Πανεπιστημίου Θεσσαλονίκης. Όπως υποδηλώνει και ο τίτλος, αντικείμενο της εργασίας μου αποτέλεσαν οι θεραπευτικοί κήποι και η σχέση τους με την Αρχιτεκτονική τοπίου με κύρια αναφορά στην όσφρηση και στο πως αυτή επηρεάζει τους ανθρώπους, ασθενείς (σωματικά και ψυχολογικά) και μη. Ως αφετηρία της εργασίας θεωρήθηκε απαραίτητο να προσδιοριστούν βασικοί ορισμοί, για τον εμπλουτισμό και την εμπέδωση της μελέτης. Στη συνέχεια, γίνεται ιστορική αναδρομή στους θεραπευτικούς κήπους της αρχαιότητας, μέχρι και σήμερα. Η διαχρονικότητα του θέματος των θεραπευτικών κήπων βασίστηκε στην αλληλεπίδραση του ανθρώπου με τη φύση. Η επίδραση της φύσης στη σωματική, ψυχική και συναισθηματική υγεία του ατόμου είναι αναμφισβήτητη. Επιπρόσθετα δίνεται έμφαση στον σχεδιασμό των θεραπευτικών κήπων και πιο συγκεκριμένα στις αρχές σχεδιασμού, καθώς και στις προδιαγραφές αυτών. Αναφέρονται οι διάφοροι τύποι θεραπευτικών κήπων και παρατίθενται παραδείγματα τους. Προσδιορίζεται ο ρόλος των αρωματικών και φαρμακευτικών φυτών στους θεραπευτικούς κήπους, όπως και στην αρχιτεκτονική τοπίου. Αναφέρονται παραδείγματα αρωματικών κήπων
Cosmic Duality in Quintom Universe
Creators: name: Cai, Yi-Fu
name: Li, Hong
name: Piao, Yun-Song
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we study the duality in two-field Quintom models of Dark Energy. We find that an expanding universe dominated by Quintom-A field is dual to a contracting universe with Quintom-B field.
description: 5 pages, 3 figures