cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ο πολιτικός λόγος της ριζοσπαστικής αριστεράς στην Ευρώπη: οι περιπτώσεις του ΣΥΡΙΖΑ και του Front de Gauche (Εκλογές 2012)
Creators: name: Μάρκου, Γρηγόριος Μάρκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: ΣΥΡΙΖΑ
Front de Gauche
Λαϊκισμός
SYRIZA
Populism

description: Σκοπός της παρούσας διπλωματικής εργασίας είναι η μελέτη του πολιτικού λόγου της ριζοσπαστικής αριστεράς στην Ευρώπη και συγκεκριμένα των δύο κινημάτων του ΣΥΡΙΖΑ (Ελλάδα) και του FrontdeGauche (Γαλλία) στις εκλογές του 2012. Συγκεκριμένα, με βάση τις κυριότερες θεωρίες που έχουν αναπτυχθεί γύρω από την ριζοσπαστική αριστερά και τον λαϊκισμό εξετάζουμε αν η πολιτική τους ρητορική είναι λαϊκιστική στις εκλογές του 2012 και ποια χαρακτηριστικά λαμβάνει. Επιπλέον, επιχειρούμε να ανιχνεύσουμε τις διαφορές που υφίστανται ανάμεσα στον αριστερό και στον δεξιό λαϊκισμό. Τέλος, βασιζόμενοι στις προσεγγίσεις που αφορούν τη σχέση λαϊκισμού και δημοκρατίας διερευνούμε τις (αρνητικές και θετικές) συνέπειες του αριστερού λαϊκισμού στη (φιλελεύθερη) δημοκρατία. Αυτό που θέλουμε να δείξουμε είναι ότι τα δύο κινήματα που εξετάζουμε εκφράζουν έναν λαϊκιστικό λόγο, ο οποίος ανήκει στην κατηγορία των «συμπεριληπτικών» λαϊκισμών (περιεκτικός) και δεν απειλεί την ποιότητα της δημοκρατίας από τη θέση της αντιπολίτευσης.
description: In this paper, we aim to explore some of the particular characteristics of the political discourse articulated by SYRIZA (Greece) and Front de Gauche (France) before the elections of 2012. Specifically, taking into account the main theories about radical left and populism, we examine the populist characteristics of their discourse. We try also to find the differences between left and right populism. Finally, based on the approach about the relationship between populism and democracy, we explore the (positive or negative) consequences of left populism in (liberal) democracy. We will argue thatpolitical discourse of SYRIZA and Front de Gauche constitutes a populist discourse, which belongs to the category of inclusionary populism and is not a threat on the quality of democracy.
Formation of a "Cluster Molecule" (C20)2 and its thermal stability
Creators: name: Podlivaev, A. I.
name: Openov, L. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The possible formation of a "cluster molecule" (C20)2 from two single C20 fullerenes is studied by the tight-binding method. Several (C20)2 isomers in which C20 fullerenes are bound by strong covalent forces and retain their identity are found; actually, these C20 fullerenes play the role of "atoms" in the "cluster molecule". The so-called open-[2+2] isomer has a minimum energy. Its formation path and thermal stability at T = 2000 - 4000 K are analyzed in detail. This isomer loses its molecular structure due to either the decay of one of C20 fullerenes or the coalescence of two C20 fullerenes into a C40 cluster. The energy barriers for the metastable open-[2+2] configuration are calculated to be U = 2 - 5 eV.
description: 21 pages, 8 figures
Lyman-$α$ emission from a WISE-selected optically faint powerful radio galaxy M151304.72-252439.7 at $z$ = 3.132
Creators: name: Shukla, Gitika
name: Srianand, Raghunathan
name: Gupta, Neeraj
name: Petitjean, Patrick
name: Baker, Andrew J.
name: Krogager, Jens-Kristian
name: Noterdaeme, Pasquier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of a large ($\sim90$ kpc) and luminous $\mathrm{Lyα}$ nebula [$L\mathrm{_{Lyα}}$ = $(6.80\pm0.08)\times 10^{44}$] $\rm{\,erg\,s^{-1}}$ around an optically faint (r$>23$ mag) radio galaxy M1513-2524 at $z\mathrm{_{em}}$=3.132. The double-lobed radio emission has an extent of 184 kpc, but the radio core, i.e., emission associated with the active galactic nucleus (AGN) itself, is barely detected. This object was found as part of our survey to identify high-$z$ quasars based on Wide-field Infrared Survey Explorer (WISE) colors. The optical spectrum has revealed $\mathrm{Lyα}$, NV, CIV and HeII emission lines with a very weak continuum. Based on long-slit spectroscopy and narrow band imaging centered on the $\mathrm{Lyα}$ emission, we identify two spatial components: a "compact component" with high velocity dispersion ($\sim 1500$$\rm{\,km\,s^{-1}}$) seen in all three lines, and an "extended component", having low velocity dispersion (i.e., 700-1000$\rm{\,km\,s^{-1}}$). The emission line ratios are consistent with the compact component being in photoionization equilibrium with an AGN. We also detect spatially extended associated $\mathrm{Lyα}$ absorption, which is blue-shifted within 250-400$\rm{\,km\,s^{-1}}$ of the $\mathrm{Lyα}$ peak. The probability of $\mathrm{Lyα}$ absorption detection in such large radio sources is found to be low ($\sim$10%) in the literature. M1513-2524 belongs to the top few percent of the population in terms of $\mathrm{Lyα}$ and radio luminosities. Deep integral field spectroscopy is essential for probing this interesting source and its surroundings in more detail.
description: 19 pages, 15 figures, Accepted for publication in MNRAS
Quark-meson coupling model with the cloudy bag
Creators: name: Nagai, S.
name: Miyatsu, T.
name: Saito, K.
name: Tsushima, K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Using the volume coupling version of the cloudy bag model, the quark-meson coupling model is extended to study the role of pion field and the properties of nuclear matter. The extended model includes the effect of gluon exchange as well as the pion-cloud effect, and provides a good description of the nuclear matter properties. The relationship between the extended model and the EFT approach to nuclear matter is also discussed.
description: 13 pages, 3 figures
Understanding interface properties in 2D heterostructure FETs
Creators: name: Nagashio, Kosuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Fifteen years have passed since graphene was first isolated on the substrate from bulk graphite. During that period, 2D layered materials with intrinsic band gaps have been realized. Although many exciting results have been reported for both their fundamental physics and applications, the discussion of 2D electron device application to the future integrated circuit is still based on the expectation of the inherently high properties that 2D materials ideally possess. This review article focuses on the gate stack property, which is one of most important building blocks in the field effect transistor. Starting from the comparison of the 2D/SiO2 interface properties with the conventional SiO2/Si interface properties, recent advances in the studies of gate stack properties for bilayer graphene and MoS2 FETs are discussed. In particular, the advantages and disadvantages of the 2D heterostructures with 2D insulator of h-BN are emphasized. This review may provide conceptual and experimental approaches for controlling the 2D heterointerface properties.
ENSEÑANZA DE LAS PALABRAS COMPUESTAS EN LA LENGUA ESPAÑOLA PARA UN GRUPO DE LOS ESTUDIANTES EXTRANJEROS
Creators: name: Bakhronova Dilrabó Keldiyorovna, doctora en filología, jefe de cátedra de la práctica de la lengua española, Universidad Estatal de Lenguas del Mundo de Uzbekistán
name: Mukhamedova Mukaddaskhon Rustamovna, estudiante del primer curso de la maestría en la lingüística de la Universidad Estatal de Lenguas del Mundo de Uzbekistán
Publisher: name: Zenodo
Year: 2024

description: La actualidad del tema elegido se basa en la necesidad de la formación de clases interactivas de ELE usando la metodología nueva y creativa para poder desarrollar los aspectos semánticos del idioma español que en este estudio se centrarán en la formación de las palabras compuestas.

Palabras clave: estructura, composición morfosintáctico, formación, detalles, palabra compuesta, compuestos univerbales, compuestos sintagmáticos, compuestos sintácticos, descripción, actividades, creatividad, aspecto, idiomas, enseñanza, hablantes no nativos, conocimiento, evaluación, parte semántica, características, uso.
The growth of H II regions around massive stars: the role of metallicity and dust
Creators: name: Ali, Ahmad A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Gas metallicity $Z$ and the related dust-to-gas ratio $f_\textrm{d}$ can influence the growth of HII regions via metal line cooling and UV absorption. We model these effects in star-forming regions containing massive stars. We compute stellar feedback from photoionization and radiation pressure (RP) using Monte Carlo radiative transfer coupled with hydrodynamics, including stellar and diffuse radiation fields. We follow a $10^5$ M$_\odot$ turbulent cloud with $Z/$Z$_\odot$ = 2, 1, 0.5, 0.1 and $f_\textrm{d} = 0.01 Z/$Z$_\odot$ with a cluster-sink particle method for star formation. The models evolve for at least 1.5 Myr under feedback. Lower $Z$ results in higher temperatures and therefore larger HII regions. For $Z \ge$Z$_\odot$, radiation pressure $P_\textrm{rad}$ can dominate locally over the gas pressure $P_\textrm{gas}$ in the inner half-parsec around sink particles. Globally, the ratio of $P_\textrm{rad}/P_\textrm{gas}$ is around 1 (2 Z$_\odot$), 0.3 (Z$_\odot$), 0.1 (0.5 Z$_\odot$), and 0.03 (0.1 Z$_\odot$). In the solar model, excluding RP results in an ionized volume several times smaller than the fiducial model with both mechanisms. Excluding RP and UV attenuation by dust results in a larger ionized volume than the fiducial case. That is, UV absorption hinders growth more than RP helps it. The radial expansion velocity of ionized gas reaches $+$15 km/s outwards, while neutral gas has inward velocities for most of the runtime, except for 0.1 Z$_\odot$ which exceeds $+$4 km/s. $Z$ and $f_\textrm{d}$ do not significantly alter the star formation efficiency, rate, or cluster half-mass radius, with the exception of 0.1 Z$_\odot$ due to the earlier expulsion of neutral gas.
description: 13 pages, 9 figures, accepted for publication in MNRAS
Decoupling of heavy quarks in HQET
Creators: name: Grozin, A. G.
name: Smirnov, A. V.
name: Smirnov, V. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Decoupling of c-quark loops in b-quark HQET is considered. The decoupling coefficients for the HQET heavy-quark field and the heavy-light quark current are calculated with the three-loop accuracy. The last result can be used to improve the accuracy of extracting f_B from HQET lattice simulations (without c-quark loops). The decoupling coefficient for the flavour-nonsinglet QCD current with n antisymmetrized gamma-matrices is also obtained at three loops; the result for the tensor current (n=2) is new.
description: JHEP3 documentclass; the results in a computer-readable form can be found at http://www-ttp.physik.uni-karlsruhe.de/Progdata/ttp06/ttp06-25/ V2: a few typos corrected, a few minor text improvements, a few references added; V3: several typos in formulas fixed
Αποτίμηση υφισταμένου κτιρίου από οπλισμένο σκυρόδεμα με ελαστική και ανελαστική ανάλυση σύμφωνα με τις διατάξεις του ΚΑΝ.ΕΠΕ.
Creators: name: Φέκας, Κωνσταντίνος Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Ελαστική Ανάλυση
Ανελαστική Ανάλυση
Αποτίμηση
Linear analysis
Nonlinear analysis
Assessment

description: Η παρούσα διπλωματική εργασία αναφέρεται στην αποτίμηση ενός υφιστάμενου κτιρίου από οπλισμένο σκυρόδεμα. Η αποτίμηση του κτιρίου γίνεται με δύο μεθόδους: i) ελαστική δυναμική ανάλυση και ii) μη γραμμική στατική ανάλυση. Το υπό μελέτη δόμημα διαθέτει τοιχωματικό φέροντα οργανισμό και αποτελείται από τρεις ορόφους, ισόγειο, πρώτο και δεύτερο όροφο. Για την παρούσα μελέτη αποτίμησης ήταν διαθέσιμα όλα τα σχέδια της αρχικής στατικής μελέτης, η οποία τοποθετείται το 1986 και πραγματοποιήθηκε με βάση τον αντισεισμικό κανονισμό του 1985. παρουσιάζονται οι βασικές αρχές αποτίμησης και ανασχεδιασμού σύμφωνα με τον Κανονισμό Επεμβάσεων (ΚΑΝ.ΕΠΕ.). Η αποτίμηση του υφιστάμενου κτιρίου γίνεται για επίπεδο επιτελεστικότητας Β1, «Προστασία Ζωής», για σεισμική δράση με πιθανότητα υπέρβασης 10% σε 50 χρόνια. Βάσει των αποτελεσμάτων που προκύπτουν από το στάδιο της αποτίμησης, προκύπτουν συμπεράσματα σχετικά με τις δύο μεθόδους ανάλυσης καθώς και για τη γενική συμπεριφορά του υπό μελέτη κτιρίου έναντι σεισμικών δράσεων.
description: The main objective of the present dissertation is the seismic assessment of an existing reinforced concrete building, applying two methods of analysis: i) response spectrum analysis and ii) nonlinear static analysis (push over analysis), as defined in the Greek Code for the Seismic Assessment and Rehabilitation of Buildings. The envisaged building comprises three stories; ground floor, 1st and 2nd floor. Resistance against lateral seismic loads, in both directions, X and Y, is provided primarily by shear walls and secondarily by moment frames. The initial structural design was available. The structure was constructed in 1986 and designed in compliance to the Greek Seismic Code established in 1985. The main principles of the Code of assessment and rehabilitation of concrete buildings are mentioned. The assessment of the building is performed, corresponding to performance level “Life Safety”, for earthquake hazard level with a probability of exceedance of 10% in 50 years. After the assessment is complete, general conclusions, concerning the two types of analysis applied and the overall seismic behavior of the building, are provided.
The columnar to equiaxed transition in nickel based superalloys AM1 and MAR-M200+Hf
Creators: name: Fernihough, John William
Publisher: name: University of British Columbia
Year: 2009

description: The columnar to equiaxed transition (CET) in Ni based superalloys AM1, electron beam remelted AM1 and MAR-M200+Hf was studied using bars instrumented with thermocouples to determine the critical solidification conditions leading to the CET. Two sets of experiments were conducted in the course of the work: the first set using investment cast moulds solidified in the experimental Bridgeman furnace at SNECMA, France. The second set of experiments consisted of directionally solidifying a bar using a copper chill for heat extraction, and were conducted at the University of British Columbia. Despite similar results of thermal gradient and solidification rate during each of the two sets of experiments, a CET was consistently obtained with the UBC experiments while not with the SNECMA experiments. The critical difference was found to be the shape of the liquid/solid interface, which was flat and horizontal in the UBC experiments but extremely curved concave upwards in the SNECMA experiments due to nature of the heat transfer. Hence the bars cast at SNECMA were dominated by secondary dendrite arm growth from the edge inwards. Comparing thermal results with the bar structure for the UBC experiments showed that the equiaxed zone always corresponded to a classical equiaxed thermal response marked by recalescence (a temporary rise in temperature) while the columnar zone corresponded to a monotonic descent in temperature. Application of a dendrite tip tracking program to the thermal data produced results in agreement with direct estimates of thermal gradient and solidification rate from the raw data. The CET was found to occur within a narrow range of solidification rates and thermal gradients, averaging 0.33 mm/sec and 5.45 °C/cm for EB remelted AM1, 0.322 mm/sec and 8.36 °C/cm for normal AM1, and 0.38 mm/sec and 5.56 °C/cm for MAR-M200+Hf No significant difference was found between normal and EB refined AM1. These results are in agreement with the Hunt CET model modified for superalloys by using a pseudo binary approximation for dendrite tip growth kinetics and an average nucleation undercooling of 3.7°C.
Cavity QED with Multiple Hyperfine Levels
Creators: name: Birnbaum, K. M.
name: Parkins, A. S.
name: Kimble, H. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We calculate the weak-driving transmission of a linearly polarized cavity mode strongly coupled to the D2 transition of a single Cesium atom. Results are relevant to future experiments with microtoroid cavities, where the single-photon Rabi frequency g exceeds the excited-state hyperfine splittings, and photonic bandgap resonators, where g is greater than both the excited- and ground-state splitting.
description: 6 pages, 10 figures
КОНЦЕПТЫ ЭМОЦИЙ В ИСПАНСКОМ И РУССКОМ ЯЗЫКАХ
Creators: name: Турамуратова Ирода Илхомбаевна, доктор философии по филологическим наукам (PhD) УзГУМЯ, Мухамедова Мукаддасхон Рустамовна студентка первого курса магистратуры по направлению: лингвистика: испанский язык, УзГУМЯ,
Publisher: name: Zenodo
Year: 2024

description: В современном научном пространстве вопросы концептуальной области языка в рамках лингвистических и филологических познаний, лингвокультурологии и когнитивной лингвистики становятся всё более интересными для анализа, направленного на обогащение спектра детального изучения того или иного языка.

Релевантность выбранной темы определяется недостаточным количеством исследований в области языковедения в рамках эмоциональной картины испанского и русского языков и необходимостью выявления возможных сходств  в языковых конструкциях эмоционального характера.

Ключевые понятия: концепт, языковедение, лингвистические и филологические познания, лингвокультурология, когнитивная лингвистика,  эмоциональная картина, эмотив, общие единицы, качественная и количественная методология, наблюдение, сравнение, сопоставление, художественная литература, поэзия, фразеологические обороты, языковые концепты, эквиваленты, энциклопедия
Searching for energy-resolved quasi-periodic oscillations in AGN
Creators: name: Ashton, D. I.
name: Middleton, M. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: X-ray quasi-periodic oscillations (QPOs) in AGN allow us to probe and understand the nature of accretion in highly curved space-time, yet the most robust form of detection (i.e. repeat detections over multiple observations) has been limited to a single source to-date, with only tentative claims of single observation detections in several others. The association of those established AGN QPOs with a specific spectral component has motivated us to search the XMM-Newton archive and analyse the energy-resolved lightcurves of 38 bright AGN. We apply a conservative false alarm testing routine folding in the uncertainty and covariance of the underlying broad-band noise. We also explore the impact of red-noise leak and the assumption of various different forms (power-law, broken power-law and lorentzians) for the underlying broad-band noise. In this initial study, we report QPO candidates in 6 AGN (7 including one tentative detection in MRK~766) from our sample of 38, which tend to be found at characteristic energies and, in four cases, at the same frequency across at least two observations, indicating they are highly unlikely to be spurious in nature.
description: 23 pages, 19 figures. Accepted for publication in MNRAS
1/f spectrum and memory function analysis of solvation dynamics in a room-temperature ionic liquid
Creators: name: Jeong, Daun
name: Choi, M. Y.
name: Jung, YounJoon
name: Kim, Hyung J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: To understand the non-exponential relaxation associated with solvation dynamics in the ionic liquid 1-ethyl-3-methylimidazolium hexafluorophosphate, we study power spectra of the fluctuating Franck-Condon energy gap of a diatomic probe solute via molecular dynamics simulations. Results show 1/f dependence in a wide frequency range over 2 to 3 decades, indicating distributed relaxation times. We analyze the memory function and solvation time in the framework of the generalized Langevin equation using a simple model description for the power spectrum. It is found that the crossover frequency toward the white noise plateau is directly related to the time scale for the memory function and thus the solvation time. Specifically, the low crossover frequency observed in the ionic liquid leads to a slowly-decaying tail in its memory function and long solvation time. By contrast, acetonitrile characterized by a high crossover frequency and (near) absence of 1/f behavior in its power spectra shows fast relaxation of the memory function and single-exponential decay of solvation dynamics in the long-time regime.
description: 10 pages, 4 figures
Δημιουργία τρισδιάστατου μοντέλου του όρους Βέρμιον και της πόλης της Νάουσας του ν. Ημαθίας σε περιβάλλον γσπ για τουριστικούς σκοπούς
Creators: name: Στεφανίδης, Κωνσταντίνος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Συστήματα γεωγραφικών πληροφοριών
Νάουσα
Τουριστικός χάρτης
GIS
Naoussa
Tourism map

description: Το αντικείμενο της διατριβής είναι η τρισδιάστατη απεικόνιση του όρους Βέρμιον καθώς και μέρους της πόλης της Νάουσας με την χρήση γεωγραφικών συστημάτων πληροφοριών. Η διατριβή είχε ως απώτερο σκοπό να παρουσιάσει τις δυνατότητες ενός συστήματος γεωγραφικών πληροφοριών στην δημιουργία τρισδιάστατου μοντέλου τόσο για το όρος «Βέρμιον» όσο και για την πόλη της Νάουσας καθώς επίσης και την δυνατότητα συνεργασίας με τα προγράμματα autocad 2012 και του sketch up 2014. Αρχικά, γίνεται αναφορά στα ψηφιακά μοντέλα εδάφους και ειδικά αναπτύσσεται η μέθοδος τρισδιάστατης απεικόνισης του tin για το όρος Βέρμιον και για την πόλη της Νάουσας. Μέσα από την περιγραφή όλων των σταδίων γεωαναφοράς, ψηφιοποίησης και της δημιουργίας του tin γίνεται μια προσπάθεια ανάδειξης της χρησιμότητας της μεθόδου. Τελικά προϊόντα αποτελούν το τρισδιάστατο μοντέλο του όρους Βέρμιον καθώς και η τρισδιάστατη αποτύπωση όχι μόνο της πόλης της Νάουσας αλλά και των πολεοδομικών χαρακτηριστικών της.
description: The subject was the 3d model (three dimensional) of the Vermion mountain and part of the town of Naoussa using gis program. This dissertation was aiming to present the capabilities of a gis program to create 3d model (three dimensional) for both Vermion mountain and for the city of Naoussa as well as the capability of cooperation between a gis program and the programs autocad 2012, sketch up 2014. Initially, digital elevation models and specially developed the three dimensional method of tin (triangulated irregular network) for the Vermion mountain and the town of Naoussa were analyzed. An effort to promote the benefits and usefulness of the method were carried out through the description of all stages georeferencing, digitizing and creation of tin. The final products are the three-dimensional model of the mountain Vermion and the three-dimensional model not only of the town of Naoussa but also of the urban characteristics too.
Flow-based detection and proxy-based evasion of encrypted malware C2 traffic
Creators: name: Novo, Carlos
name: Morla, Ricardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: State of the art deep learning techniques are known to be vulnerable to evasion attacks where an adversarial sample is generated from a malign sample and misclassified as benign. Detection of encrypted malware command and control traffic based on TCP/IP flow features can be framed as a learning task and is thus vulnerable to evasion attacks. However, unlike e.g. in image processing where generated adversarial samples can be directly mapped to images, going from flow features to actual TCP/IP packets requires crafting the sequence of packets, with no established approach for such crafting and a limitation on the set of modifiable features that such crafting allows. In this paper we discuss learning and evasion consequences of the gap between generated and crafted adversarial samples. We exemplify with a deep neural network detector trained on a public C2 traffic dataset, white-box adversarial learning, and a proxy-based approach for crafting longer flows. Our results show 1) the high evasion rate obtained by using generated adversarial samples on the detector can be significantly reduced when using crafted adversarial samples; 2) robustness against adversarial samples by model hardening varies according to the crafting approach and corresponding set of modifiable features that the attack allows for; 3) incrementally training hardened models with adversarial samples can produce a level playing field where no detector is best against all attacks and no attack is best against all detectors, in a given set of attacks and detectors. To the best of our knowledge this is the first time that level playing field feature set- and iteration-hardening are analyzed in encrypted C2 malware traffic detection.
description: 9 pages, 6 figures
SIMDive: Approximate SIMD Soft Multiplier-Divider for FPGAs with Tunable Accuracy
Creators: name: Ebrahimi, Zahra
name: Ullah, Salim
name: Kumar, Akash
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The ever-increasing quest for data-level parallelism and variable precision in ubiquitous multimedia and Deep Neural Network (DNN) applications has motivated the use of Single Instruction, Multiple Data (SIMD) architectures. To alleviate energy as their main resource constraint, approximate computing has re-emerged,albeit mainly specialized for their Application-Specific Integrated Circuit (ASIC) implementations. This paper, presents for the first time, an SIMD architecture based on novel multiplier and divider with tunable accuracy, targeted for Field-Programmable Gate Arrays (FPGAs). The proposed hybrid architecture implements Mitchell's algorithms and supports precision variability from 8 to 32 bits. Experimental results obtained from Vivado, multimedia and DNN applications indicate superiority of proposed architecture (both SISD and SIMD) over accurate and state-of-the-art approximate counterparts. In particular, the proposed SISD divider outperforms the accurate Intellectual Property (IP) divider provided by Xilinx with 4x higher speed and 4.6x less energy and tolerating only < 0.8% error. Moreover, the proposed SIMD multiplier-divider supersede accurate SIMD multiplier by achieving up to 26%, 45%, 36%, and 56% improvement in area, throughput, power, and energy, respectively.
Improved Approximations for Fermion Pair Production in Inhomogeneous Electric Fields
Creators: name: Kim, Sang Pyo
name: Page, Don N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Reformulating the instantons in a complex plane for tunneling or transmitting states, we calculate the pair-production rate of charged fermions in a spatially localized electric field, illustrated by the Sauter electric field E_0 sech^2 (z/L), and in a temporally localized electric field such as E_0 sech^2 (t/T). The integration of the quadratic part of WKB instanton actions over the frequency and transverse momentum leads to the pair-production rate obtained by the worldline instanton method, including the prefactor, of Phys. Rev. D72, 105004 (2005) and D73, 065028 (2006). It is further shown that the WKB instanton action plus the next-to-leading order contribution in spinor QED equals the WKB instanton action in scalar QED, thus justifying why the WKB instanton in scalar QED can work for the pair production of fermions. Finally we obtain the pair-production rate in a spatially localized electric field together with a constant magnetic field in the same direction.
description: RevTex, 12 pages, two figures; replaced by the version accepted in Phys. Rev. D
New Computational Approaches to Analysis of Interbeat Intervals in Human Subjects
Creators: name: Tabar, M. Reza Rahimi
name: Ghasemi, Fatemeh
name: Peinke, Joachim
name: Friedrich, Rudolf
name: Kaviani, Kamran
name: Taghavi, Fatemeh
name: Sadeghi, Sara
name: Bijani, Golnoosh
name: Sahimi, Muhammad
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We investigate the Markov nature, Cascade of information from large time scale to small scale and extended self similarity properties of the beat to beat fluctuations of healthy subjects as well as those with congestive heart failure. To check the Markov nature, we use a novel inverse method that utilizes a set of data to construct a simple equation that governs the stochastic process for which the data have been measured, hence enabling us to reconstruct the stochastic process. The inverse method provides a novel technique for distinguishing the two classes of subjects in terms of a drift and a diffusion coefficients which behave completely differently for the two classes of subjects.To investigate the cascade of information from large to small time scales we also analyze the statistical properties of interbeat intervals cascade by considering the joint probability distribution for two interbeat increments. As a result, the joint probability distributions of the increments in the interbeat intervals obey a Fokker-Planck equation. Finally we analyze the extended self-similarity (ESS) in the beat-to-beat fluctuations in the heart rates of healthy and congestive heart failure subjects.The proposed methods provide the novel techniques for distinguishing the two classes of subjects in terms of the drift and diffusion coefficients, intermittency exponents which behave differently for two classes of the subjects, namely, healthy subjects and those with congestive heart failure.
description: 11 Pages (2 columns), 14 figures
Οργάνωση και χρηματοδότηση συστημάτων αστικών μαζικών μεταφορών στην Ελλάδα και σύγκριση με αντίστοιχα συστήματα χωρών της Ευρωπαϊκής Ένωσης
Creators: name: Λιμνιός, Χρήστος Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: οργάνωση
χρηματοδότηση
συστήματα αστικών μαζικών μεταφορών
organization
financing
urban public transport systems

description: Λαμβάνοντας υπόψη τις εξελίξεις που πραγματοποιούνται στο σύνολο των ευρωπαϊκών κρατών (κοινωνικό-πολιτικές και οικονομικές), είναι αναγκαία η αναδιατύπωση-αναδιαμόρφωση των εκφάνσεων και των συνιστωσών που συμβάλλουν στην εύρυθμη λειτουργία της κοινωνίας, μέρος της οποίας είναι και ο κλάδος των μεταφορών, ο οποίος διαδραματίζει σημαντικότατο ρόλο στο σύνολο αυτής. Στο πλαίσιο αυτό, είναι αδήριτος ο σχεδιασμός οργανωμένων δράσεων που θα βελτιώσουν το επίπεδο ζωής των ανθρώπων στις νέες συνθήκες που διαμορφώνονται. Ο σχεδιασμός των μεταφορών οφείλει να έχει πολυπαραμετρικό χαρακτήρα λαμβάνοντας υπόψη την αρμονική συνύπαρξη περιβαλλοντικής-οικονομικής και κοινωνικής διάστασης, στα πλαίσια της βιώσιμης ανάπτυξης. Η συνολική θεώρηση όλων των παραπάνω, θα επιφέρει βέλτιστες οργανωτικές και χρηματοδοτικές δομές μεταφορικού έργου ανά εξεταζόμενη περιοχή ένταξης και λειτουργίας. Ο απώτερος στόχος της διπλωματικής αυτής εργασίας έχει διττό χαρακτήρα, αφ’ ενός την απόκτηση επαρκούς γνώσης και την εμβάθυνση στο ιδιαίτερα σημαντικό και ενδιαφέρον αντικείμενο των δημοσίων συγκοινωνιών και αφ’ ετέρου, τη δημιουργία ενός εγχειριδίου, το οποίο θα παρουσιάζει με εύληπτο τρόπο και με έναν ικανοποιητικό βαθμό λεπτομέρειας, τα βασικότερα σημεία των οργανωτικών και χρηματοδοτικών σχημάτων, που ανταποκρίνονται στις σύγχρονες δομές των δημοσίων συγκοινωνιών, παρέχοντας στους ενδιαφερόμενους, μέσα για την κατανοητή προσέγγιση του συγκεκριμένου θέματος.
description: Considering the developments taking place in all European countries (socio-political and economic), it is necessary to recast-remodeling expressions and the components that contribute to the proper functioning of society, part of which is the transport sector, which It plays an important role in all this. So, it is necessary to design organized actions that will improve living standards of people in the new created conditions. The transport planning must have multi-parameter character taking into account the harmonious coexistence of environmental-economic and social dimension in the context of sustainable development. The overall view of all the above, it will have as result, optimal organizational and financial structures of capacity per area considered integration and operation. The ultimate goal of this thesis is dual, on the one hand, the acquisition of sufficient knowledge and deepening the very important and interesting subject of public transport and secondly, to create a manual, which presents an intelligible manner and in a adequate level of detail, the key points of organizational and financing schemes, covering the current structures of public transport, providing relevant, comprehensible means to approach this issue.
Hawking radiation from (2+1)-dimensional BTZ black holes
Creators: name: Jiang, Qing-Quan
name: Wu, Shuang-Qing
name: Cai, Xu
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by the Robinson-Wilczek's recent viewpoint that Hawking radiation can be treated as a compensating energy momentum tensor flux required to cancel gravitational anomaly at the horizon of a Schwarzschild-type black hole, we investigate Hawking radiation from the rotating $(2+1)$-dimensional BTZ black hole and the charged $(2+1)$-dimensional BTZ black hole, via cancellation of gauge and gravitational anomalies at the horizon. To restore gauge invariance and general coordinate covariance at the quantum level, one must introduce the corresponding gauge current and energy momentum tensor fluxes to cancel gauge and gravitational anomalies at the horizon. The results show that the values of these compensating fluxes are exactly equal to those of $(1+1)$-dimensional blackbody radiation at the Hawking temperature.
description: 15 pages; references updated and added; to appear in Phys. Lett. B
A Unified Framework for the Pareto Law and Matthew Effect using Scale-Free Networks
Creators: name: Hu, Mao-Bin
name: Wang, Wen-Xu
name: Jiang, Rui
name: Wu, Qing-Song
name: Wang, Bing-Hong
name: Wu, Yong-Hong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We investigate the accumulated wealth distribution by adopting evolutionary games taking place on scale-free networks. The system self-organizes to a critical Pareto distribution (1897) of wealth $P(m)\sim m^{-(v+1)}$ with $1.6 < v <2.0$ (which is in agreement with that of U.S. or Japan). Particularly, the agent's personal wealth is proportional to its number of contacts (connectivity), and this leads to the phenomenon that the rich gets richer and the poor gets relatively poorer, which is consistent with the Matthew Effect present in society, economy, science and so on. Though our model is simple, it provides a good representation of cooperation and profit accumulation behavior in economy, and it combines the network theory with econophysics.
description: 5 pages, 8 figures
The rapid transition from star-formation to AGN dominated rest-frame UV light at z ~ 4
Creators: name: Bowler, R. A. A.
name: Adams, N. J.
name: Jarvis, M. J.
name: Häußler, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: With the advent of deep optical-to-near-infrared extragalactic imaging on the degree scale, samples of high-redshift sources are being selected that contain both bright star-forming (SF) galaxies and faint active galactic nuclei (AGN). In this study we investigate the transition between SF and AGN-dominated systems at $z \simeq 4$ in the rest-frame UV. We find a rapid transition to AGN-dominated sources bright-ward of $M_{\rm UV} \simeq -23.2$. The effect is observed in the rest-frame UV morphology and size-luminosity relation, where extended clumpy systems become point-source dominated, and also in the available spectra for the sample. These results allow us to derive the rest-frame UV luminosity function for the SF and AGN-dominated sub-samples. We find the SF-dominated LF is best fit with a double-power law, with a lensed Schechter function being unable to explain the existence of extremely luminous SF galaxies at $M_{\rm UV} \simeq -23.5$. If we identify AGN-dominated sources according to a point-source morphology criterion we recover the relatively flat faint-end slope of the AGN LF determined in previous studies. If we instead separate the LF according to the current spectroscopic AGN fraction, we find a steeper faint-end slope of $α= -1.83 \pm 0.11$. Using a simple model to predict the rest-frame AGN LF from the $z = 4 $ galaxy LF we find that the increasing impact of host galaxy light on the measured morphology of faint AGN can explain our observations.
description: 17 pages, 11 figures, 2 tables. Accepted to MNRAS
Thermal analysis of the startup phase for D.C. casting of an AA5182 aluminum ingot
Creators: name: Wiskel, J. Barry
Publisher: name: University of British Columbia
Year: 2009

description: The evolution of temperature and stress during the start-up phase of the direct chill (D.C.) casting process has been studied to determine the factors that make this phase of the process prone to surface crack generation. The analysis was carried out principally using a finite element based heat flow model, but a preliminary thermal stress model was also employed. Key to the study was the experimental measurement of temperature in the region of the cast prone to crack formation and the development of a technique to determine the surface heat fluxes as a function of surface temperature (system boiling curves) in the direct chill water. An inverse heat transfer methodology was developed to calculate the boiling curves for direct chill water cooling. This method uses as input the data acquired from one embedded thermocouple transiting the water cooling region and involves the application of l-D and 2-D finite element based heat conduction models in succession. The technique has been verified using hypothetical temperature data obtained from a transient casting simulation conducted with a known heat flux profile. The results of the inverse heat calculations on the industrial data indicate that a variation in surface morphology, occurring during the early stages of casting, influences the shape of the water cooling flux/temperature relations and has a bearing on the amount of heat extracted during startup. The intensity of the direct chill water cooling was found to be enhanced in the “lapped surface morphology” portion of the ingot relative to the remainder of the cast. Based on the calculated system boiling curves, a FEM simulation of the cast start was undertaken. The thermal analysis was employed to identify conditions that may enhance the potential for surface crack generation. The simulation data, in conjunction with relevant industrial measurements, suggests that a combination of an increase in the solidified shell thickness (defined as the distance of the solidus isotherm from the surface of the ingot parallel to the water contact line), and a high surface temperature gradient in the vicinity of the water contact point, accounts for the high incidence of surface face cracking observed. A preliminary thermal stress analysis qualitatively supports the association of a peak tensile stress with a peak in surface temperature gradient. Maximum values of both shell thickness and peak surface temperature gradient were observed to occur in the “lapped surface morphology” regime. The peak values in this region of the ingot were attributed to both an increase in the severity of water cooling (as calculated with the inverse heat transfer technique) and an enhancement in heat extracted by the mould. This observation indicates that events occurring in the meniscus region, with particular regard to the development of surface morphology, have a significant impact on subsequent cooling behaviour.
Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) XII. Extended [C II] Structure (Merger or Outflow) in a z = 6.72 Red Quasar
Creators: name: Izumi, Takuma
name: Onoue, Masafusa
name: Matsuoka, Yoshiki
name: Strauss, Michael A.
name: Fujimoto, Seiji
name: Umehata, Hideki
name: Imanishi, Masatoshi
name: Kawamuro, Taiki
name: Nagao, Tohru
name: Toba, Yoshiki
name: Kohno, Kotaro
name: Kashikawa, Nobunari
name: Inayoshi, Kohei
name: Kawaguchi, Toshihiro
name: Iwasawa, Kazushi
name: Inoue, Akio K.
name: Goto, Tomotsugu
name: Baba, Shunsuke
name: Schram, Malte
name: Suh, Hyewon
name: Harikane, Yuichi
name: Ueda, Yoshihiro
name: Silverman, John D.
name: Hashimoto, Takuya
name: Hashimoto, Yasuhiro
name: Ikarashi, Soh
name: Iono, Daisuke
name: Lee, Chien-Hsiu
name: Lee, Kianhong
name: Minezaki, Takeo
name: Nakanishi, Kouichiro
name: Nakano, Suzuka
name: Tamura, Yoichi
name: Tang, Ji-Jia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present ALMA [C II] 158 $μ$m line and far-infrared (FIR) continuum emission observations toward HSC J120505.09$-$000027.9 (J1205$-$0000) at $z = 6.72$ with the beam size of $\sim 0''.8 \times 0''.5$ (or 4.1 kpc $\times$ 2.6 kpc), the most distant red quasar known to date. Red quasars are modestly reddened by dust, and are thought to be in rapid transition from an obscured starburst to an unobscured normal quasar, driven by powerful active galactic nucleus (AGN) feedback which blows out a cocoon of interstellar medium (ISM). The FIR continuum of J1205$-$0000 is bright, with an estimated luminosity of $L_{\rm FIR} \sim 3 \times 10^{12}~L_\odot$. The [C II] line emission is extended on scales of $r \sim 5$ kpc, greater than the FIR continuum. The line profiles at the extended regions are complex and broad (FWHM $\sim 630-780$ km s$^{-1}$). Although it is not practical to identify the nature of this extended structure, possible explanations include (i) companion/merging galaxies and (ii) massive AGN-driven outflows. For the case of (i), the companions are modestly star-forming ($\sim 10~M_\odot$ yr$^{-1}$), but are not detected by our Subaru optical observations ($y_{\rm AB,5σ} = 24.4$ mag). For the case of (ii), our lower-limit to the cold neutral outflow rate is $\sim 100~M_\odot$ yr$^{-1}$. The outflow kinetic energy and momentum are both much smaller than what predicted in energy-conserving wind models, suggesting that the AGN feedback in this quasar is not capable of completely suppressing its star formation.
description: 12 pages, 4 figures, 2 tables, accepted for publication in ApJ
Decoherence and relaxation of qubits coupled to low- and medium-frequency Ohmic baths directly and via a harmonic oscillator
Creators: name: Liang, Xian-Ting
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the numerical path integral method we investigate the decoherence and relaxation of qubits in spin-boson (SB) and spin-intermediate harmonic oscillator (IHO)-bath (SIB) models. The cases that the environment baths with low and medium frequencies are investigated. It is shown that the qubits in SB and SIB models have the same decoherence and relaxation as the baths with low frequencies. However, the qubits in the two models have different decoherence and relaxation as the baths with medium frequencies. The decoherence and relaxation of the qubit in SIB model can be modulated through changing the coupling coefficients of the qubit-IHO and IHO-bath and the oscillation frequency of the IHO.
description: 5 pages, 6 figures
ПАЛИЙ, ПРАКРИТ ВА АПАБҲАРАНША ТИЛЛАРИДАГИ СОНЛАРГА ХОС ЛЕКСЕМАЛАРНИНГ ШАКЛЛАНИШИДА ВАРИАНТЛИЛИК ҲОДИСАСИ (БИРЛИКЛАРГА ОИД СОНЛАРГА ХОС ЛЕКСЕМАЛАР МИСОЛИДА)
Creators: name: Сирожиддин Нурматов, Тошкент давлат шарқшунослик университети доценти, филология фанлари номзоди
Publisher: name: Zenodo
Year: 2024

description: Мазкур мақолада ўрта ҳинд-орий тиллари гуруҳига оид палий, пракрит ва апабҳаранша тилларидаги сонларга хос лексемалардаги вариантлилик ҳодисаси лисоний жиҳатдан таҳлил қилинган. Тилшунос олимларнинг илмий асарлари асосида бирликларга оид сонларга хос лексемалар атрофлича ўрганилган. Палий, пракрит ва апабҳаранша тилларидаги сонларга хос лексик бирликлар таркибидаги вариантлилик ҳодисаси тадқиқ этилган.

Таянч сўзлар: сўзнинг варианти, фонетик вариант, лексема, лигатура, сон сўз туркуми, саноқ сон, бирликлар.

Annotation: This article linguistically analyzes the phenomenon of variation in number lexemes in Pali, Prakrit and Apabharansha which are characteristic of the middle Indo-Aryan group of languages. On the basis of the scientific works of linguists, lexemes specific to numbers related to units have been thoroughly studied. The phenomenon of variation in number-specific lexical units in Pali, Prakrit and Apabharansha languages is studied.

Key words: variants of the word, phonetic variant, lexema, ligature, word sequence, cardinal numeral, units.
Using radial velocities to reveal black holes in binaries: a test case
Creators: name: Clavel, M.
name: Dubus, G.
name: Casares, J.
name: Babusiaux, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims. Large radial velocity variations in the LAMOST spectra of giant stars have been used to infer the presence of unseen companions. Some of them have been proposed as possible black hole candidates. We test this selection by investigating the classification of the one candidate having a known X-ray counterpart (UCAC4 721-037069). Methods. We obtained time-resolved spectra from the Liverpool Telescope and a 5ks observation from the Chandra observatory to fully constrain the orbital parameters and the X-ray emission of this system. Results. We find the source to be an eclipsing stellar binary that can be classified as a RS CVn. The giant star fills its Roche Lobe and the binary mass ratio is greater than one. The system may be an example of stable mass transfer from an intermediate-mass star with a convective envelope. Conclusions. Using only radial velocity to identify black hole candidates can lead to many false positives. The presence of an optical orbital modulation, such as observed for all LAMOST candidates, will in most cases indicate that this is a stellar binary.
description: 6 pages, 3 figures, Accepted for publication in Astronomy & Astrophysics