cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Precise Calibration of the One-Loop Bispectrum in the Effective Field Theory of Large Scale Structure
Creators: name: Steele, Theodore
name: Baldauf, Tobias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The bispectrum is the leading non-Gaussian statistic in Large-Scale Structure (LSS) clustering and encodes the interactions in the underlying field. It is thus an important diagnostic for primordial non-Gaussianity and higher order galaxy biasing. In this paper we present a detailed test and calibration of the matter bispectrum counterterms in the Effective Field Theory of LSS against a suite of $N$-body simulations. We are going beyond previous studies in employing realisation based perturbation theory that allows for a significant reduction in cosmic variance error bars. This enables the measurement of the low-energy constants on large scales before two-loop corrections become relevant, around $k<0.09 h\mathrm{Mpc}^{-1}$ at $z=0$. We also go beyond previous work in using bispectrum propagator terms, i.e. correlators with linear and second order fields, to quantify the two new counterterms in isolation and to establish consistency with the power spectrum counterterm. By investigating the fully non-linear bispectrum, $B_{\mathrm{nnn}}$, as well as the terms $B_{\mathrm{n}11}$ and $B_{\mathrm{n}21}$, we find evidence for the new counterterms deviating from the shape suggested by the UV-limit of the relevant bispectrum contributions. We also show that the commonly used Einstein-de Sitter approximation for the time dependence of the tree-level bispectrum is insufficient for precise studies of the one-loop bispectrum and that it is necessary to use $Λ$CDM growth factors in order to obtain meaningful one-loop counterterm constraints. Finally, we also find evidence for small deviations in the growth factors that arise from time integration inaccuracies in the $N$-body simulations.
description: 29 pages, 16 figures, comments welcome
Discovery of supersymmetry with degenerated mass spectrum
Creators: name: Kawagoe, Kiyotomo
name: Nojiri, Mihoko M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Discovery of supersymmetric (SUSY) particles at the Large Hadron Collider(LHC) has been studied for the models where squarks and gluino are much heavier than the lightest supersymetric particle (LSP). In this paper, we investigate the SUSY discovery in the models with degenerated mass spectrum up to m_LSP~0.7 m_sq. Such mass spectrum is predicted in certain parameter region of the mixed modulas anomaly mediation (MMAM) model. We find that the effective transverse mass of the signal for the degenerated parameters shows the distribution similar to that of the background. Experimental sensitivity of the SUSY particles at the LHC therefore depends on the uncertainty of the background in this class of model. We also find that SUSY signal shows an interesting correlation between M_eff and ETmiss which may be used to determine the signal region properly to enhance the S/N ratio even if the sparticle masses are rather degenerated. The structure is universal for the models with new heavy colored particles decaying into visible particles and a stable neutral particle, dark matter.
description: 18 pages, 7 figure, revtex4
Coherent control of a self-trapped Bose-Einstein condensate
Creators: name: Creffield, C. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the behavior of a Bose-Einstein condensate held in an optical lattice. We first show how a self-trapping transition can be induced in the system by either increasing the number of atoms occupying a lattice site, or by raising the interaction strength above a critical value. We then investigate how applying a periodic driving potential to the self-trapped state can be used to coherently control the emission of a precise number of correlated bosons from the trapping-site. This allows the formation and transport of entangled bosonic states, which are of great relevance to novel technologies such as quantum information processing.
description: 4 pages, 5 EPS figures
Fractional model of COVID-19 applied to Galicia, Spain and Portugal
Creators: name: Ndairou, Faical
name: Area, Ivan
name: Nieto, Juan J.
name: Silva, Cristiana J.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences
subject: 26A33, 34A08, 92D30

description: A fractional compartmental mathematical model for the spread of the COVID-19 disease is proposed. Special focus has been done on the transmissibility of super-spreaders individuals. Numerical simulations are shown for data of Galicia, Spain, and Portugal. For each region, the order of the Caputo derivative takes a different value, that is not close to one, showing the relevance of considering fractional models.
description: This is a preprint of a paper whose final and definite form is published by 'Chaos Solitons Fractals' (ISSN: 0960-0779). Paper Submitted 04/June/2020; Revised 22/July/2020 and 02/Aug/2020; Accepted 04/Jan/2021
Η ειρηνευτική δημοσιογραφία στη Β.Ιρλανδία
Creators: name: Καραγιάννης, θωμάς Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ειρηνευτική δημοσιογραφία
Μέσα μαζικής ενημέρωσης
Β.Ιρλανδία
Peace journalism
Media
N.Ireland

description: Η εν λόγω διπλωματική εργασία σκοπό έχει να εξετάσει την ειρηνευτική δημοσιογραφία στη Β.Ιρλανδία. Επιλέχθηκε η Β.Ιρλανδία, λόγω του ιστορικού παρελθόντος της χώρας και λόγω των συγκρούσεων που υπάρχουν μεταξύ των δύο κοινοτήτων- Προτεστάντων και Καθολικών. Παρ’ότι η Β.Ιρλανδία, αποτελεί αναπόσπαστο μέρος του Η.Βασιλείου, παρατηρούμε ότι επικρατεί ένας διχασμός μεταξύ των κοινοτήτων που πηγάζει από την συνύπαρξη δύο διαφορετικών κουλτούρων και πολιτιστικών καταβολών, από τις δύο διαφορετικές θρησκείες που επικρατούν στο νησί, και φυσικά από τον τρόπο που οι νέες γενιές αναπτύσσουν την πολιτιστική και πολιτική τους ταυτότητα. Σκοπός της έρευνας είναι να εξετάσει τις πολιτικές και πολιτιστικές ταυτότητες που επικρατούν στο νησί και τον αυτοπροσδιορισμό των κατοίκων, να εξετάσει τον τρόπο παρουσίασης των Ταραχών από τα Μέσα μέχρι σήμερα, και τέλος να εξετάσει εάν θα μπορούσαν τα Μέσα με τη χρήση της ειρηνευτικής δημοσιογραφίας να βοηθήσουν στην εύρεση λύσεων για τις ταραχές μεταξύ των κοινοτήτων.
description: The present thesis is a case study aiming to examine the peace journalism in Northern Ireland. Northern Ireland was chosen because of the historical past of the country. The aim is to examine the peace journalism and the conflicts that exist between the two Communities; Protestants and Catholics. While NIR is an integral part of UK, we observe that there is a division between the two communities that arises from the coexistence of two different cultures and cultural roots from two different religions that co-exist on the island. The thesis aims to examine the political and cultural identities that exist on the island and the self-determination and the belonging of the residents. Moreover, the thesis examines the way the media represented the Troubles so far, and whether through the scope of peace journalism it would be possible to find solutions and resolve the conflicts in the societies.
A parameterisation of single and multiple muons in the deep water or ice
Creators: name: Margiotta, Annarita
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A new parameterisation of atmospheric muons deep underwater (or ice) is presented. It takes into account the simultaneous arrival of muons in bundle giving the multiplicity of the events and the muon energy spectrum as a function of their lateral distribution in a shower.
description: 3 pages, 2 figures, talk given at TAUP 2005, Zaragoza (Spain) (to appear in the proceedings of TAUP 2005)
Diffusion Limited Aggregation on a Cylinder
Creators: name: Benjamini, Itai
name: Yadin, Ariel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60G50; 60K35

description: We consider the DLA process on a cylinder G x N. It is shown that this process "grows arms", provided that the base graph G has small enough mixing time. Specifically, if the mixing time of G is at most (log|G|)^(2-\eps), the time it takes the cluster to reach the m-th layer of the cylinder is at most of order m |G|/loglog|G|. In particular we get examples of infinite Cayley graphs of degree 5, for which the DLA cluster on these graphs has arbitrarily small density. In addition, we provide an upper bound on the rate at which the "arms" grow. This bound is valid for a large class of base graphs G, including discrete tori of dimension at least 3. It is also shown that for any base graph G, the density of the DLA process on a G-cylinder is related to the rate at which the arms of the cluster grow. This implies, that for any vertex transitive G, the density of DLA on a G-cylinder is bounded by 2/3.
description: 1 figure
Εργασία και εκπαίδευση στη «μεταβιομηχανική» οικονομία. Το ζήτημα της διά βίου μάθησης
Creators: name: Καραγκούνη, Βασιλική Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Διά βίου μάθηση
Εκπαίδευση
Εργασία
Life Long Learning
Education
Labour

description: Τις τελευταίες δεκαετίες διαδραματίζονται έντονες και σημαντικές αλλαγές στο πεδίο της εργασίας και της εκπαίδευσης. Τα κείμενα της Ε.Ε. και των διεθνών οργανισμών (Ο.Ο.Σ.Α.), η ελληνική νομοθεσία αλλά και η επιστημονική βιβλιογραφία παρουσιάζουν τη διά βίου μάθηση ως μοχλό οικονομικής και κοινωνικής ανάπτυξης. Έτσι, το ζήτημα της διά βίου μάθησης αναδεικνύεται ως σημαντικό ερευνητικό πεδίο, καθώς επηρεάζει την εκπαιδευτική και κοινωνική πραγματικότητα.
description: The last decades significant changes have taken place in the field of labour and education. The texts of E.U. and international organizations (O.E.C.D.), the Greek legislation and also the scientific bibliography present the Life Long Learning as a lever of economic and social growth. In this way, the issue of Life Long Learning becomes an important scientific field because it affects the educational and social reality.
Solution to a combinatorial puzzle arising from Mayer's theory of cluster integrals
Creators: name: Bernardi, Olivier
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Mayer's theory of cluster integrals allows one to write the partition function of a gas model as a generating function of weighted graphs. Recently, Labelle, Leroux and Ducharme have studied the graph weights arising from the one-dimensional hard-core gas model and noticed that the sum of the weights over all connected graphs with $n$ vertices is $(-n)^{n-1}$. This is, up to sign, the number of rooted Cayley trees on $n$ vertices and the authors asked for a combinatorial explanation. The main goal of this article is to provide such an explanation.
description: 9 pages
Η εγχάρακτη κεραμική της Ύστερης Εποχής του Χαλκού στην Κεντρική Μακεδονία
Creators: name: Τσάφου, Ευγενία Ελευθερίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Εγχάρακτη Κεραμική
Ύστερη Εποχή του Χαλκού
Προϊστορική Μακεδονία
Incised Pottery
Late Bronze Age
Prehistoric Macedonia

description: Στην παρούσα μεταπτυχιακή διατριβή πραγματοποιήθηκε μελέτη εγχάρακτης κεραμικής της Ύστερης Εποχής του Χαλκού από την Κεντρική Μακεδονία. Συγκεκριμένα μελετήθηκαν μακροσκοπικά εγχάρακτα αγγεία από τη θέση Τούμπα Θεσσαλονίκης, από τις θέσεις Καλίνδρια, Αξιοχώρι, Τσαουζίτσα, Περιβολάκι, Λιμνότοπος (ανασκαφές Heurtley) και από τις θέσεις της επιφανειακής έρευνας του French. Η μελέτη επικεντρώθηκε στην καταγραφή και ανάλυση των μορφολογικών και τεχνολογικών χαρακτηριστικών των αγγείων ώστε να εξεταστούν τα στοιχεία που συνδέονται με την παραγωγή, τη χρήση και τη γεωγραφική και χρονολογική κατανομή των εγχάρακτων αγγείων στην περιοχή της Μακεδονίας.
description: This Master thesis presents the results of the incised pottery study of Late Bronze Age from Central Macedonia. Particularly the analysis was based on macroscopic observation of incised pottery from: settlement Toumba Thessalonikis, settlements Kalindria, Axiochori, Tsaouzitsa, Perivolaki, Limnotopos (Heurtley's excavations) and settlements from French's surface survey. The analysis focused on the recording and classification of morphological and technological characteristics of vessels with the view to examine the elements that deal with the production, the use as well as the geographical and chronological distribution of incised vessels in Macedonia.
Modeling patient flow in the emergency department using machine learning and simulation
Creators: name: Alenany, Emad
name: Cadi, Abdessamad Ait El
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recently, the combination of machine learning (ML) and simulation is gaining a lot of attention. This paper presents a novel application of ML within the simulation to improve patient flow within an emergency department (ED). An ML model used within a real ED simulation model to quantify the effect of detouring a patient out of the ED on the length of stay (LOS) and door-to-doctor time (DTDT) as a response to the prediction of patient admission to the hospital from the ED. The ML model trained using a set of six features including the patient age, arrival day, arrival hour of the day, and the triage level. The prediction model used a decision tree (DT) model, which is trained using historical data achieves a 75% accuracy. The set of rules extracted from the DT are coded within the simulation model. Given a certain probability of free inpatient beds, the predicted admitted patient is then pulled out from the ED to inpatient units to alleviate the crowding within the ED. The used policy combined with adding specific ED resources achieve 9.39% and 8.18% reduction in LOS and DTDT, respectively.
Evaporative cooling in the contact line region
Creators: name: Stefurak, Glenn
Publisher: name: University of British Columbia
Year: 2009

description: Evaporative cooling of small, high power dissipating devices using thin liquid films is becoming an increasingly important field of research as the requirements for this tech- nology grow. Understanding the mechanisms which cause liquid motion in the film and evaporation from the liquid surface is essential to the practical designer attempting to create a truly effective cooling scheme. For liquid films of less than 1 μm, previous experiments have confirmed the existence of an adsorbed layer where no evaporation occurs, plus a region of slightly increased thickness where limited evaporation takes place. A theory has been proposed for the non-evaporating region which modifies the thin liquid film pressure due to the molecular attraction of the underlying substrate. The pressure adjustment is termed the disjoining pressure and is thought to be the dominant driving force for liquid motion in this thin film region In order to test the validity of the disjoining pressure concept for an evaporating film, an experiment was designed which uses a dielectric liquid, FC-72, and a highly polished silicon substrate inclined at a 5° angle from the horizontal to create an extended meniscus. A fluorescent light was used in an interferometer to provide increased film profile data and a specially designed focusing ellipsometer was used to measure film thicknesses in the adsorbed film region. Heat was supplied to the meniscus through a 400 μm wide boron diffused heater within the silicon substrate. Surface temperature and mass evaporation rates were also measured. It was concluded from the results that the disjoining pressure model which had orig- inally been developed for static non-evaporating thin films is equally applicable to evap- orating thin film environments. The model proposes an inverse cubic relationship (1/h 3) between the disjoining pressure and the adsorbed thickness. However, values of the Hamaker constant used in the relationship, inferred from the experiments were 4-5 times the theoretical value. The corresponding heat and mass transfer models which employ the disjoining pres- sure require further study, as evidenced by their prediction of total heat and mass trans- fer rates at least one order of magnitude lower than those measured in the experiments. Improvement of the heater design and of the thin film profiling method are two very important areas to be considered for future work in this field.
Long-range entanglement in the Dirac vacuum
Creators: name: Silman, J.
name: Reznik, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, there have been a number of works investigating the entanglement properties of distinct noncomplementary parts of discrete and continuous Bosonic systems in ground and thermal states. The Fermionic case, however, has yet to be expressly addressed. In this paper we investigate the entanglement between a pair of far-apart regions of the 3+1 dimensional massless Dirac vacuum via a previously introduced distillation protocol [B. Reznik et al., Phys. Rev. A 71, 042104 (2005)]. We show that entanglement persists over arbitrary distances, and that as a function of L/R, where L is the distance between the regions and R is their typical scale, it decays no faster than exp(-(L/R)^2). We discuss the similarities and differences with analogous results obtained for the massless Klein-Gordon vacuum.
description: 11 pages, 1 figure
Ενδυμασία και καλλωπισμός από άποψη χριστιανικής ηθικής
Creators: name: Γαρίδου, Ευαγγελία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ενδυμασία
Καλλωπισμός
Ηθική
Attire
Embellishment
Ethic

description: Σκοπός της διπλωματικής είναι η προσέγγιση του θέματος ενδυμασία και καλλωπισμός από άποψη χριστιανικής ηθικής. Εξετάσαμε τα είδη της ένδυσης και τους τρόπους καλλωπισμού στην αρχαία Ελλάδα και στο Βυζάντιο. Στη συνέχεια αναφερθήκαμε στην ανάγκη των πρωτόπλαστων να καλύψουν τη γύμνια τους εξαιτίας του προπατορικού αμαρτήματος και της έκπτωσής τους από τον παράδεισο. Επιπλέον αναζητήσαμε τις, σχετικές με το θέμα, αναφορές στα χωρία της Αγίας Γραφής και στα κείμενα των Πατέρων της Εκκλησίας. Ιδιαίτερη μνεία έγινε στους παράγοντες που επηρεάζουν τον τρόπο ενδυμασίας, ενώ ακόμα επισημάναμε τη σημασιολογία των χρωμάτων στην ενδυμασία. Τέλος εστιάσαμε στην ανάγκη της φροντίδας του σώματος, αλλά παράλληλα και στην σπουδαιότητα της ψυχικής ανάτασης.
description: The aim of the present thesis was attire and embellishment in terms of Christian ethics. We examined the articles of clothing and the ways of embellishment in the ancient Greece and the Byzantium. Furthermore, we mentioned the need of protoplasts to cover their nudity, which is caused by the original sin and their fall from heaven. Additionally we noted the relevant with the subject references that are included in Bible and the texts of Fathers of the Church. Also we descripted the factors that affect the ways of dressing, whereas we insisted on the meaning of colors on this. Finally we focused on the importance of body care, in parallel with soul.
On the Riemann zeta-function and the divisor problem IV
Creators: name: Ivić, Aleksandar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11N37, 11M06

description: Let $Δ(x)$ denote the error term in the Dirichlet divisor problem, and $E(T)$ the error term in the asymptotic formula for the mean square of $|ζ(1/2+it)|$. If $E^*(t) = E(t) - 2πΔ^*(t/(2π))$ with $Δ^*(x) = -Δ(x) + 2Δ(2x) - {1\over2}Δ(4x)$, then it is proved that $$ \int_0^T|E^*(t)|^3dt \ll_εT^{3/2+ε}, $$ which is (up to `$ε$' best possible) and $ζ(1/2+it) \ll_εt^{ρ/2+ε}$ if $E^*(t) \ll_εt^{ρ+ε}$.
description: 11 pages
The outer disc in shambles: blind detection of Monoceros and ACS with Gaia's astrometric sample
Creators: name: Ramos, P.
name: Antoja, T.
name: Mateu, C.
name: Anders, F.
name: Laporte, C. F. P.
name: Carballo-Bello, J. A.
name: Famaey, B.
name: Ibata, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The astrometric sample of Gaia allows us to study the outermost Galactic disc, the halo and their interface. It is precisely at the very edge of the disc where the effects of external perturbations are expected to be the most noticeable. Our goal is to detect the kinematic substructure present in the halo and at the edge of the Milky Way (MW) disc, and provide observational constraints on their phase-space distribution. We download, one HEALpix at a time, the proper motion histogram of distant stars, to which we apply a Wavelet Transformation to reveal the significant overdensities. We then analyse the large coherent structures that appear in the sky. We reveal a sharp yet complex anticentre dominated by Monoceros (MNC) and the Anticentre Stream (ACS) in the north, which we find with an intensity comparable to the Magellanic clouds and the Sagittarius stream, and by MNC south and TriAnd at negative latitudes. Our method allows us to perform a morphological analysis of MNC and ACS, both spanning more than 100$^\circ$ in longitude, and to provide a high purity sample of giants with which we track MNC down to latitudes as low as $\sim$5$^\circ$. Their colour-magnitude diagram is consistent with extended structures at a distance of $\sim$10-11 kpc originated in the disc, with a very low ratio of RR Lyrae over M giants, and kinematics compatible with the rotation curve at those distances or only slightly slower. We present a precise characterisation of MNC and ACS, two previously known structures that our method reveals naturally, allowing us to detect them without limiting ourselves to a particular stellar type and, for the first time, using only kinematics. Our results allow future studies to model their chemo-dynamics and evolution, thus constraining some of the most influential processes that shaped the MW.
description: Submitted to Astronomy and Astrophysics. Online material available upon acceptance
On a special congruence of Carlitz
Creators: name: Mattarei, Sandro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B65 (Primary); 05A10, 05A19, 11A07 (Secondary)

description: We prove that if $q$ is a power of a prime $p$ and $p^k$ divides $a$, with $k\ge 0$, then \[ 1+(q-1)\sum_{0\le b(q-1)
description: 11 pages
The states of W-class as shared resources for perfect teleportation and superdense coding
Creators: name: Li, Lvzhou
name: Qiu, Daowen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: As we know, the states of triqubit systems have two important classes: GHZ-class and W-class. In this paper, the states of W-class are considered for teleportation and superdense coding, and are generalized to multi-particle systems. First we describe two transformations of the shared resources for teleportation and superdense coding, which allow many new protocols from some known ones for that. As an application of these transformations, we obtain a sufficient and necessary condition for a state of W-class being suitable for perfect teleportation and superdense coding. As another application, we find that state $|W>_{123}={1/2}(|100>_{123}+|010>_{123}+\sqrt{2}|001>_{123})$ can be used to transmit three classical bits by sending two qubits, which was considered to be impossible by P. Agrawal and A. Pati [Phys. Rev. A to be published]. We generalize the states of W-class to multi-qubit systems and multi-particle systems with higher dimension. We propose two protocols for teleportation and superdense coding by using W-states of multi-qubit systems that generalize the protocols by using $|W>_{123}$ proposed by P. Agrawal and A. Pati. We obtain an optimal way to partition some W-states of multi-qubit systems into two subsystems, such that the entanglement between them achieves maximum value.
description: 10 pages, critical comments and suggestions are welcome
A practical approach for updating an integrity-enforced operating system
Creators: name: Ozga, Wojciech
name: Quoc, Do Le
name: Fetzer, Christof
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Trusted computing defines how to securely measure, store, and verify the integrity of software controlling a computer. One of the major challenges that make them hard to be applied in practice is the issue with software updates. Specifically, an operating system update causes the integrity violation because it changes the well-known initial state trusted by remote verifiers, such as integrity monitoring systems. Consequently, the integrity monitoring of remote computers becomes unreliable due to the high amount of false positives. We address this problem by adding an extra level of indirection between the operating system and software repositories. We propose a trusted software repository (TSR), a secure proxy that overcomes the shortcomings of previous approaches by sanitizing software packages. Sanitization consists of modifying unsafe installation scripts and adding digital signatures in a way software packages can be installed in the operating system without violating its integrity. TSR leverages shielded execution, i.e., Intel SGX, to achieve confidentiality and integrity guarantees of the sanitization process. TSR is transparent to package managers, and requires no changes in the software packages building and distributing processes. Our evaluation shows that running TSR inside SGX is practical; since it induces only ~1.18X performance overhead during package sanitization compared to the native execution without SGX. TSR supports 99.76% of packages available in the main and community repositories of Alpine Linux while increasing the total repository size by 3.6%.
Computing secular motion under slowly rotating quadratic perturbation
Creators: name: Mikkola, S.
name: Nurmi, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider secular perturbations of nearly Keplerian two-body motion under a perturbing potential that can be approximated to sufficient accuracy by expanding it to second order in the coordinates. After averaging over time to obtain the secular Hamiltonian, we use angular momentum and eccentricity vectors as elements. The method of variation of constants then leads to a set of equations of motion that are simple and regular, thus allowing efficient numerical integration. Some possible applications are briefly described.
description: 3 pages, 0 figures accepted for publication
Ensuring Robustness in Training Set Based Global 21-cm Cosmology Analysis
Creators: name: Bassett, Neil
name: Rapetti, David
name: Tauscher, Keith
name: Burns, Jack
name: Hibbard, Joshua
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a methodology for ensuring the robustness of our analysis pipeline in separating the global 21-cm hydrogen cosmology signal from large systematics based on singular value decomposition (SVD) of training sets. We show how traditional goodness-of-fit metrics such as the $χ^2$ statistic that assess the fit to the full data may not be able to detect a suboptimal extraction of the 21-cm signal when it is fit alongside one or more additional components due to significant covariance between them. However, we find that comparing the number of SVD eigenmodes for each component chosen by the pipeline for a given fit to the distribution of eigenmodes chosen for synthetic data realizations created from training set curves can detect when one or more of the training sets is insufficient to optimally extract the signal. Furthermore, this test can distinguish which training set (e.g. foreground, 21-cm signal) needs to be modified in order to better describe the data and improve the quality of the 21-cm signal extraction. We also extend this goodness-of-fit testing to cases where a prior distribution derived from the training sets is applied and find that, in this case, the $χ^2$ statistic as well as the recently introduced $ψ^2$ statistic are able to detect inadequacies in the training sets due to the increased restrictions imposed by the prior. Crucially, the tests described in this paper can be performed when analyzing any type of observations with our pipeline.
description: 16 pages, 6 figures, 2 tables. Submitted to the Astrophysical Journal
Σύνθεση φαίνυλο-υποκατεστημένων συμπυκνω-μένων οξαζολοκουμαρινών με τη χρήση μετάλλων ως καταλυτών και μελέτη πιθανών βιολογικών εφαρμογών
Creators: name: Βλάχου, Ευαγγελία-Ειρήνη Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Οξαζολοκουμαρίνες
Νανοσωματίδια αργύρου
Νανοσωματίδια χρυσού
Oxazolocoumarins
Silver nanoparticles
Gold nanoparticles

description: Οι κουμαρίνες και τα βενζοξαζόλια αποτελούν βασικές δομικές μονάδες ενός μεγάλου αριθμού ενώσεων με φαρμακευτική και βιολογική δράση. Σκοπός της παρούσας διπλωματικής εργασίας είναι η σύνθεση φαίνυλο-υποκατεστημένων συμπυκνωμένων οξαζολοκουμαρινών με τη χρήση καταλυτών και η μελέτη της δομής των ενώσεων που απομονώθηκαν. Συγκεκριμένα χρησιμοποιήθηκαν τρία καταλυτικά συστήματα: (α) τριχλωριούχος σίδηρος, FeCl3, (β) νανοσωματίδια χρυσού προσροφημένα σε διοξείδιο τιτανίου, Au/TiO2 και (γ) νανοσωματίδια αργύρου προσροφημένα σε διοξείδιο του τιτανίου, Ag/TiO2. Το πρώτο κεφάλαιο περιλαμβάνει μια εισαγωγική αναφορά για τις κουμαρίνες, τα βενζοξαζόλια και τους παραπάνω καταλύτες. Το δεύτερο κεφάλαιο περιλαμβάνει τα αποτελέσματα και συζήτηση της παρούσας διπλωματικής εργασίας και τις αντιδράσεις που χρησιμοποιήθηκαν, ενώ στο τρίτο κεφάλαιο παρατίθενται οι πειραματικές διαδικασίες και οι πίνακες με τα πειραματικά και φασματοσκοπικά δεδομένα των ενώσεων που συντέθηκαν. Τέλος ακολουθούν τα συμπεράσματα της εργασίας. Οι δομές των ενώσεων, τέσσερεις εκ των οποίων είναι νέες, εξακριβώθηκαν με συνδυασμό των χρωματογραφικών φασμάτων IR, MS και NMR (1H, 13C, HSQC και HMBC). Επίσης προτείνονται πιθανοί μηχανισμοί και με τους τρεις καταλύτες που δικαιολογούν τις δομές των προϊόντων που απομονώθηκαν.
description: Coumarins and benzoxazoles are fundamental building blocks of various compounds with pharmaceutical and biological activity. The purpose of this thesis is the metal-catalyzed synthesis of phenyl-substituted fused oxazolocoumarins and the study of the structure of the isolated compounds. We use three catalytic systems: (a) iron (III) chloride, FeCl3, (b) gold nanoparticles supported on titanium dioxide, Au/TiO2 and (c) silver nanoparticles supported on titanium dioxide, Ag/TiO2. The first chapter includes an introductory reference for the coumarins, the benzoxazoles and the three catalysts mentioned above. The second chapter includes the results and discussion, where the results of this thesis and the reactions, which were used, are presented, while the third section includes the experimental procedures and tables with experimental and spectroscopic data of the synthesized compounds. Finally the conclusions of this thesis are given. The structures of all compounds, four of which are new, were identified by combination of the chromatographic spectra of IR, MS and NMR (1H, 13C, HSQC and HMBC). Moreover, we propose potential reactions’ mechanisms that justify the structure of the isolated compounds.
THE PRODUCTION POTENTIAL OF HALLOYSITIC KAOLIN IN THE REGION OF JUIZ DE FORA - MG - BRAZIL
Creators: name: TOLENTINO JUNIOR, JOB
Publisher: name: Zenodo
Year: 2017
Subjects: KAOLIN
HALLOYSITIC
JUIZ DE FORA

description: Brazil is one of the world's largest producers of processed kaolin. Its geological diversity is reflected in the diverse environments in which the associations of kaolinitic clay minerals were formed.
Predictive Supersymmetry from Criticality
Creators: name: Nomura, Yasunori
name: Poland, David
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: Motivated by the absence of any direct signal of new physics so far, we present a simple supersymmetric model in which the up-type Higgs mass-squared parameter crosses zero at a scale close to the weak scale. Such a theory may be motivated either by the conventional naturalness picture or by the landscape picture with certain assumptions on prior probability distributions of parameters. The model arises from a simple higher dimensional setup in which the gauge and Higgs fields propagate in the bulk while the matter fields are on a brane. The soft supersymmetry breaking parameters receive contributions from both moduli and anomaly mediations, and their weak scale values can be analytically solved for in terms of a single overall mass scale M. The expected size for M depends on whether one adopts the naturalness or landscape pictures, allowing for the possibility of distinguishing between these two cases. We also present possible variations of the model, and discuss more general implications of the landscape picture in this context.
description: 18 pages, 4 figures, reference added
Nonequilibrium structures and dynamic transitions in driven vortex lattices with disorder
Creators: name: Kolton, Alejandro B.
name: Domínguez, Daniel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We review our studies of elastic lattices driven by an external force $F$ in the presence of random disorder, which correspond to the case of vortices in superconducting thin films driven by external currents. Above a critical force $F_c$ we find two dynamical phase transitions at $F_p$ and $F_t$, with $F_c
description: 8 pages, 3 figs
The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) I. Ultraviolet to Infrared Photometry of 22 Million Stars in M33
Creators: name: Williams, Benjamin F.
name: Durbin, Meredith J.
name: Dalcanton, Julianne J.
name: Lang, Dustin
name: Girardi, Leo
name: Smercina, Adam
name: Dolphin, Andrew
name: Weisz, Daniel R.
name: Choi, Yumi
name: Bell, Eric F.
name: Rosolowsky, Erik
name: Skillman, Evan
name: Koch, Eric W.
name: Lindberg, Christine W.
name: Hagen, Lea
name: Gordon, Karl D.
name: Seth, Anil
name: Gilbert, Karoline
name: Guhathakurta, Puragra
name: Lauer, Tod
name: Bianchi, Luciana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present panchromatic resolved stellar photometry for 22 million stars in the Local Group dwarf spiral Triangulum (M33), derived from Hubble Space Telescope (HST) observations with the Advanced Camera for Surveys (ACS) in the optical (F475W, F814W), and the Wide Field Camera 3 (WFC3) in the near ultraviolet (F275W, F336W) and near-infrared (F110W, F160W) bands. The large, contiguous survey area covers $\sim$14 square kpc and extends to 3.5 kpc (14 arcmin, or 1.5-2 scale lengths) from the center of M33. The PHATTER observing strategy and photometry technique closely mimic those of the Panchromatic Hubble Andromeda Treasury (PHAT), but with updated photometry techniques that take full advantage of all overlapping pointings (aligned to within $
description: 38 pages, 6 tables, 25 figures, accepted for publication in ApJS
Ästhetik der Stimmung: Anmerkungen zu Wilhelm von Humboldt, Caspar David Friedrich und Stéphane Mallarmé
Creators: name: Moog-Grünewald, Maria
Publisher: name: Universität Tübingen
Year: 2015
Subjects: subject: Literaturwissenschaft
subject: 800

description: Zweitveröffentlichung
The web of the Giant: spectroscopic confirmation of a Large Scale Structure around the z=6.31 quasar SDSS J1030+0524
Creators: name: Mignoli, Marco
name: Gilli, Roberto
name: Decarli, Roberto
name: Vanzella, Eros
name: Balmaverde, Barbara
name: Cappelluti, Nico
name: Cassarà, Letizia P.
name: Comastri, Andrea
name: Cusano, Felice
name: Iwasawa, Kazushi
name: Marchesi, Stefano
name: Prandoni, Isabella
name: Vignali, Cristian
name: Vito, Fabio
name: Zamorani, Giovanni
name: Chiaberge, Marco
name: Norman, Colin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report on the spectroscopic confirmation of a large scale structure around the luminous, z=6.31 QSO SDSS~J1030+0524, that is powered by a billion solar mass black hole. The structure is populated by at least six members, four Lyman Break Galaxies (LBGs) and two Lyman Alpha Emitters (LAEs). The four LBGs have been identified among a sample of 21 i-band dropouts with z{AB}<25.5 selected up to projected separations of 5 physical Mpc (15 arcmin) from the QSO. Their redshifts have been determined through up to 8hr-long multi-object spectroscopic observations at 8-10m class telescopes. The two LAEs have been identified in a 6hr VLT/MUSE observation centered on the QSO. The redshifts of the six galaxies cover the range 6.129-6.355. Assuming that peculiar velocities are negligible, this range corresponds to radial separations of +/-5 physical Mpc from the QSO, that is comparable to the projected scale of the observed LBG distribution on the sky. We conservatively estimate that this structure is significant at >3.5 sigma level, and that the level of the galaxy overdensity is at least 1.5-2 within the large volume sampled (~780 physical Mpc^3). The spectral properties of the six member galaxies (Lyalpha strength and UV luminosity) are similar to those of field galaxies at similar redshifts. This is the first spectroscopic identification of a galaxy overdensity around a super-massive black hole in the first billion years of the Universe. Our finding lends support to the idea that the most distant and massive black holes form and grow within massive (>10^{12} Msun) dark matter halos in large scale structures, and that the absence of earlier detections of such systems was likely due to observational limitations.
description: 8 pages including Appendix, 5 figures, accepted as a letter on Astronomy & Astrophysics. v2: minor changes in Table 1 caption and Figs. 2 & 3 labels
General description of Dirac spin-rotation effect with relativistic factor
Creators: name: Zhang, C. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Mashhoon rotation-spin coupling is studied by means of the parallelism description of general relativity. The relativistic rotational tetrad is exploited, which results in the Minkowski metric, and the torsion axial-vector and Dirac spin coupling will give the Mashhoon rotation-spin term. For the high speed rotating cases, the tangent velocity constructed by the angular velocity $\Ome$ multiplying the distance r may exceed over the speed of light c, i.e., $\Ome r \ge c$, which will make the relativistic factor $γ$ infinity or imaginary. In order to avoid this "meaningless" difficulty occurred in $γ$ factor, we choose to make the rotation nonuniform and position-dependent in a particular way, and then we find that the new rotation-spin coupling energy expression is consistent with the previous results in the low speed limit.
description: 8 pages, accepted by IJMPD 2007
Η αναπαράσταση του φύλου στα εγχειρίδια ιταλικής γλώσσας ως ξένης
Creators: name: Βλιώρα, Νικολέττα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Αναπαράσταση
Φύλο
Εγχειρίδια ιταλικής γλώσσας
Representation
Gender
Textbooks of Italian language

description: Σκοπός της παρούσας εργασίας είναι η διερεύνηση της αναπαράστασης του φύλου στα εγχειρίδια ιταλικής γλώσσας ως ξένης. Κατά την εκμάθηση και διδασκαλία μιας ξένης γλώσσας σε εκπαιδευτικό πλαίσιο το εγχειρίδιο είναι το κύριο διδακτικό μέσο και ταυτόχρονα αποτελεί μέσο μετάδοσης πολιτισμικών στοιχείων. Η ταυτότητα του φύλου διαμορφώνεται κοινωνικά και πολιτισμικά, συνεπώς τα πρόσωπα που απεικονίζονται στα εγχειρίδια ξένης γλώσσας αντανακλούν τις κοινωνικές αντιλήψεις για το φύλο. Για να ανακαλυφθεί ο τρόπος αναπαράστασης των δύο φύλων στα εγχειρίδια ιταλικής γλώσσας επιλέχθηκαν δύο εγχειρίδια και αναλύθηκαν οι εικόνες που περιέχουν πρόσωπα. Για την ανάλυση εφαρμόζεται η μέθοδος της ανάλυσης περιεχόμενου και οι χρησιμοποιούνται οι παρακάτω κατηγορίες: η συχνότητα εμφάνισης ανδρών και γυναικών στις εικόνες, ο χώρος στον οποίο τοποθετούνται τα πρόσωπα, ο ρόλος του γονέα, οι οικιακές ασχολίες, οι δραστηριότητες ελεύθερου χρόνου και οι επαγγελματικές δραστηριότητες. Τα ευρήματα της ανάλυσης έδειξαν ότι ο τρόπος με τον οποίο παρουσιάζονται τα δύο φύλα είναι γενικά ισορροπημένος, ωστόσο παρατηρούνται διαφορές που αφορούν συγκεκριμένες κατηγορίες. Συνεπώς, αναδεικνύεται η ανάγκη αξιολόγησης του περιεχομένου της εικονογράφησης των εγχειριδίων με στόχο τον περιορισμό των διαφορών ανάμεσα στους άνδρες και τις γυναίκες.
description: The aim of the present study is the investigation of gender representation in coursebooks of Italian as a foreign language. In the process of language learning and teaching the coursebook is used both as the main means of teaching and as a means of conveying cultural elements. Gender identity is socially and culturally constructed, therefore, the characters illustrated in language coursebooks reflect social beliefs about gender. In order to find out how gender is represented in coursebooks of Italian language, two coursebooks were selected and the pictures containing characters were analyzed. The analysis is based on the method of content analysis and the following categories are used: frequency of male and female characters, place in which characters are depicted, parenting role, household activities, free time activities and job occupations. Findings revealed that gender is generally represented in a balanced way, however, there are some differences regarding specific categories. Therefore, there is a need for the evaluation of coursebooks with the aim of limiting the differences between men and women.
How to Study a Persistent Active Glassy System?
Creators: name: Mandal, Rituparno
name: Sollich, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We explore glassy dynamics of dense assemblies of soft particles that are self-propelled by active forces. These forces have a fixed amplitude and a propulsion direction that varies on a timescale tau_p, the persistence timescale. Numerical simulations of such active glasses are computationally challenging when the dynamics is governed by large persistence times. We describe in detail a recently proposed scheme that allows one to study directly the dynamics in the large persistence time limit, on timecales around and well above the persistence time. We discuss the idea behind the proposed scheme, which we call activity-driven dynamics, as well as its numerical implementation. We establish that our prescription faithfully reproduces all dynamical quantities in the appropriate limit tau_p goes to infinity. We deploy the approach to explore in detail the statistics of Eshelby-like plastic events in the steady state dynamics of a dense and intermittent active glass.
description: 9 pages, 9 figures
Fourier phase analysis in radio-interferometry
Creators: name: Levrier, Francois
name: Falgarone, Edith
name: Viallefond, Francois
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Most statistical tools used to characterize the complex structures of the interstellar medium can be related to the power spectrum, and therefore to the Fourier amplitudes of the observed fields. To tap into the vast amount of information contained in the Fourier phases, one may consider the probability distribution function (PDF) of phase increments, and the related concepts of phase entropy and phase structure quantity. We use these ideas here with the purpose of assessing the ability of radio-interferometers to detect and recover this information. By comparing current arrays such as the VLA and Plateau de Bure to the future ALMA instrument, we show that the latter is definitely needed to achieve significant detection of phase structure, and that it will do so even in the presence of a fair amount of atmospheric phase fluctuations. We also show that ALMA will be able to recover the actual "amount'' of phase structure in the noise-free case, if multiple configurations are used.
description: Accepted for publication in "Astronomy & Astrophysics"
Σχεδιασμός, σύνθεση και μελέτη βιολογικής δράσης νέων σουλφοναμιδικών παραγώγων του βενζοθειαζολίου
Creators: name: Πέτρου, Ανθή Ηρακλή
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Σύνθεση
Σουλφοναμιδικά παράγωγα
Βενζοθειαζόλιο
Synthesis
Sulphonamide derivatives
Benzothiazole

description: Η εργασία αυτή έχει ως αντικείμενο την σύνθεση και μελέτη για πιθανή αντιδιαβητική δράση δεκατεσσάρων σουλφοναμιδικών παράγωγων του 2-αμινοβενζοθειαζολίου. Ο σχεδιασμός των ενώσεων έγινε με βάση τη βιβλιογραφία και με τη βοήθεια του υπολογιστικού προγράμματος πρόβλεψης της βιολογικής τους δράσης, PASS. Η σύνθεση των ενώσεων πραγματοποιήθηκε σε ένα στάδιο μέσω χλωροσουλφονυλίωσης υποκατεστημένων 2-άμινοβενζοθειαζολίων. Τα τελικά προϊόντα ανακρυσταλλώθηκαν με τους κατάλληλους διαλύτες και ταυτοποιήθηκαν με στοιχειακή ανάλυση και φασματοσκοπικά. Έγινε υπολογιστική πρόβλεψη της λιποφιλικότητας των ενώσεων που συντέθηκαν. Όλες οι ενώσεις εξετάστηκαν in vitro ως πιθανοί αναστολείς της φωσφατάσης PTP1B. Πραγματοποιήθηκε θεωρητική μελέτη πρόσδεσης για ορισμένες από τις υπό μελέτη ενώσεις στο αλλοστερικό και ενεργό κέντρο του ενζύμου PTP1B, χρησιμοποιώντας το πρόγραμμα Autodock 4.2. Τέλος, μελετήθηκε η αντιμικροβιακή δράση των ενώσεων, έναντι θετικών και αρνητικών κατά Gram βακτηρίων με in vitro μελέτες προκειμένου να προσδιοριστεί η προβλεφθείσα δράση τους.
description: This thesis presents and discusses the synthesis and evaluation of potential antidiabetic activity of fourteen sulphonamide derivatives of 2-aminobenzothiazol as PTP1B inhibitors. The design of compounds was based on literature. The prediction of biological activity spectra of all compounds was performed by computer program PASS. The synthesis of compounds was carried out in one step by chlorosulfonylation of substituted 2-aminobenzothiazoles. The final products were recrystallized from appropriate solvents and characterized by elemental analysis and spectroscopic methods. Theoretical calculations of lipophilicity were performed for all compounds. All compounds were tested in vitro as potent inhibitors of phosphatase PTP1B. Docking studies were performed for some of the compounds in allosteric and active center of the enzyme PTP1B using the program Autodock 4.2. Finally, the in vitro evaluation of antimicrobial activity of the compounds against selected Gram positive and Gram negative bacteria was carried out using microdilution method, to determine their predicted action.