cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Boron nitride nanotube precursor formation during high-temperature synthesis: kinetic and thermodynamic modelling
Creators: name: Barsukov, Yuri
name: Dwivedi, Omesh
name: Kaganovich, Igor
name: Jubin, Sierra
name: Khrabry, Alexander
name: Ethier, Stephane
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We performed integrated modelling of the chemical pathways of formation for boron nitride nanotube (BNNT) precursors during high-temperature synthesis in a B/N2 mixture. Modelling includes quantum chemistry, quantum-classical molecular dynamics, thermodynamic, and kinetic approaches. It is shown that BN compounds are formed in the interaction of N2 molecules with small boron clusters (N2 molecule fixation) rather than with less reactive liquid boron. We demonstrate that the transformation and consumption of liquid boron proceeds through the evaporation of clusters, Bm with m less than or equal to 5 and their subsequent conversion into BmNn chains. The production of such chains is crucial to the growth of BNNTs because these chains form the building blocks of bigger and longer BN chains and rings, which are themselves the building blocks of fullborenes and BNNTs. Moreover, kinetic modelling revealed that B4N4 and B5N4 species play a major role in the N2 molecule fixation process. The formation of these species via reactions with B4 and B5 clusters is not adequately described under the assumption of thermodynamic equilibrium because the accumulation of both B4N4 and B5N4 depends on the background gas pressure and the gas cooling rate. Long BN chains and rings, which are precursors of the fullborene and BNNT growth, form via self-assembly of component B4N4 and B5N4. Our modelling results (particularly the increased densities of B4N4 and B5N4 species at higher gas pressures) explain the experimentally observed effect of gas pressure on the yield of high-quality BNNTs. The catalytic role of hydrogen was also studied; it is shown that HBNH molecules can be the main precursor of BNNT synthesis in the presence of hydrogen.
description: 20 pages, 11 figures, 5 tables
Understanding the Applicability of Terahertz Flow-guided Nano-Networks for Medical Applications
Creators: name: Canovas-Carrasco, Sebastian
name: Asorey-Cacheda, Rafael
name: Garcia-Sanchez, Antonio-Javier
name: Garcia-Haro, Joan
name: Wojcik, Krzysztof
name: Kulakowski, Pawel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Terahertz-based nano-networks are emerging as a groundbreaking technology able to play a decisive role in future medical applications owing to their ability to precisely quantify figures, such as the viral load in a patient or to predict sepsis shock or heart attacks before they occur. Due to the extremely limited size of the devices composing these nano-networks, the use of the Terahertz (THz) band has emerged as the enabling technology for their communication. However, the characteristics of the THz band, which strictly reduce the communication range inside the human body, together with the energy limitations of nano-nodes make the in-body deployment of nano-nodes a challenging task. To overcome these problems, we propose a novel in-body flow-guided nano-network architecture consisting of three different devices: i) nano-node, ii) nano-router, and iii) bio-sensor. As the performance of this type of nano-network has not been previously explored, a theoretical framework capturing all its particularities is derived to properly model its behavior and evaluate its feasibility in real medical applications. Employing this analytical model, a thorough sensitivity study of its key parameters is accomplished. Finally, we analyze the terahertz flow-guided nano-network design to satisfy the requirements of several medical applications of interest.
Can small-scale baryon inhomogeneities resolve the Hubble tension? An investigation with ACT DR4
Creators: name: Thiele, Leander
name: Guan, Yilun
name: Hill, J. Colin
name: Kosowsky, Arthur
name: Spergel, David N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Small-scale inhomogeneities in the baryon density around recombination have been proposed as a solution to the tension between local and global determinations of the Hubble constant. These baryon clumping models make distinct predictions for the cosmic microwave background anisotropy power spectra on small angular scales. We use recent data from the Atacama Cosmology Telescope to test these predictions. No evidence for baryon clumping is found, assuming a range of parameterizations for time-independent baryon density probability distribution functions. The inferred Hubble constant remains in significant tension with the SH0ES measurement.
description: 10+2 pages, 6 figures; matches PRD version
ปัจจัยที่มีอิทธิพลต่อการตัดสินใจของนักท่องเที่ยวชาวจีนที่เดินทางเข้ามาท่องเที่ยวในประเทศไทย
Creators: name: น้ำฝน จันทร์นวล
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2556
Subjects: ปัจจัยที่มีอิทธิพลต่อการตัดสินใจ, ส่วนประสมทางการตลาด, นักท่องเที่ยวชาวจีน

description: 2, 6, วารสารเทคโนโลยีภาคใต้
ความสัมพันธ์ระหว่างความสามารถของพนักงานขายกับพฤติกรรมการปฏิบัติงานของพนักงานขายของบริษัทจำกัด ในจังหวัดนครศรีธรรมราช
Creators: name: อรัญญา  หนูรอด
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2556
Subjects: ความสามารถของพนักงานขาย, พฤติกรรมการปฏิบัติงาน, ทักษะในการขาย, ความรู้ในตัวสินค้า

description: 1, 6, วารสารเทคโนโลยีภาคใต้
Raising pragmatic awareness in the Greek EFL context: noticing and reflecting on the consequentiality of difference
Creators: name: Μιχαήλ, Ευαγγελία Β.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Ευθυγράμμιση της αξιολόγησης με το πρόγραμμα διδασκαλίας
Πολιτισμικό ήθος
Πραγματολογική και διαπολιτισμική ενημερότητα
Curriculum alignment
cultural ethos
Pragmatic and intercultural awareness

description: Η παρούσα μελέτη περίπτωσης αποτελεί την πρώτη παιδαγωγική παρέμβαση στη διδασκαλία της πραγματολογίας στα πλαίσια διδασκαλίας της Αγγλικής ως ξένης γλώσσας στη Δευτεροβάθμια Εκπαίδευση. Η έρευνα υιοθέτησε τη μεθοδολογία της Εξερευνητικής Πρακτικής, εμπλέκοντας 16 μαθητές (10 κορίτσια και 6 αγόρια) της πρώτης τάξης Λυκείου, στο φυσικό χώρο και χρόνο διδασκαλίας τους, με στόχο να ενισχύσει την επίδοση των μαθητών. Μέσα από τη διδασκαλία του συλλογικού πολιτισμικού ήθους της Ελληνικής γλώσσας και του ατομικού πολιτισμικού ήθους της Αγγλικής γλώσσας, όπως αυτές ομιλούνται από τους χρήστες τους ως μητρικές γλώσσες, η έρευνα είχε ως στόχο να ενισχύσει την πραγματολογική και διαπολιτισμική ενημερότητα των μαθητών. Η παρέμβαση αποτέλεσε μια προσπάθεια ευθυγράμμισης της αξιολόγησης με το πρόγραμμα διδασκαλίας. Η ποσοτική και ποιοτική ανάλυση της διαμορφωτικής αξιολόγησης, της τελικής αξιολόγησης, αλλά και της αυτό-αξιολόγησης των μαθητών και η τριγωνοποίηση των αποτελεσμάτων απέδειξαν ότι η ευθυγράμμιση της αξιολόγησης με το πρόγραμμα διδασκαλίας μπορεί να ενισχύσει σε μεγάλο βαθμό την απόκτηση πραγματολογικής και διαπολιτισμικής ενημερότητας των μαθητών ως προς την κατανόηση και την παραγωγή κατάλληλων λεκτικών πράξεων συγνώμης στην Αγγλική γλώσσα.
description: This classroom-based case study explores the first pedagogical intervention in the teaching of pragmatics in the Greek EFL classroom. The motivation for the study is to be sought in the new demands brought to teachers, students and schools by the recent curriculum innovation, revised textbooks across the school system, and current calls voiced by the research community. The study adopted the methodology of Exploratory Practice, engaging 16 students (10 girls & 6 boys) of the first grade of Upper Secondary School (Lykeio), aged 15, in classroom research with a view to “moving in relationships from power over students, to power with students” (Groundwater-Smith, 2007, p. 126, emphasis in the original). Using explicit awareness-oriented metapragmatic instruction, the study aimed at raising students’ awareness of the Greek and the English cultural ethos, as well as their pragmatic and intercultural awareness, enhancing their pragmalinguistic and sociopragmatic skills. The intervention was as an attempt to seek positive washback among assessment, instruction and learning as well as the alignment of both of these with instructional practices. Quantitative and qualitative analysis of formative, summative, and self-assessment and triangulated results demonstrated that such an alignment was highly effective in raising students’ pragmatic and intercultural awareness of comprehending and producing appropriate apologies in Native Speaker English.
Κοινωνία, θρησκεία και πολιτισμός στον ελληνικό κινηματογράφο της δεκαετίας του '50
Creators: name: Νταλάσης, Στέφανος Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Ελληνικός κινηματογράφος
Κοινωνία
Θρησκεία
Πολιτισμός
Greek cinema
Society
Religion
Culture

description: Στη παρούσα έρευνα και διατριβή, επιχειρούμε μια προσπάθεια ενοποίησης του τεμαχισμένου καθρέπτη της κοινωνικής και πολιτισμικής πραγματικότητας, μέσα από τις κινηματογραφικές ταινίες. Ενδεχομένως να μην είναι δυνατή η συγκόλληση των επιμέρους κομματιών, ώστε να έχουμε πλήρη και ολόκληρη την κοινωνική και πολιτισμική εικόνα. Ωστόσο όμως, τα κομμάτια του πάζλ της κινηματογραφικής κοινωνίας ενώνονται, μορφοποιούνται και σχηματίζουν ένα μωσαϊκό, που αν και ασπρόμαυρο είναι ζωντανό και πολύχρωμο και αντανακλά την κοινωνική εικόνα, τον πολιτισμό και τους ανθρώπους του. Εξάλλου, η κάθε ταινία, από μόνη της δεν είναι μόνο ένα κομμάτι ενός συνολικού (κοινωνικού) καθρέπτη, αλλά αποτελεί ένα αυτόνομο και ολοκληρωμένο κάδρο μιας (φιλμικής) κοινωνίας.
description: In this research and thesis, we attempt to unify the scattered pieces of social and cultural reality reflected in films. It may not be able to join the individual pieces in order to have a full and entire social and culture picture. However, the pieces of the puzzle of the cinematic world join and meld together to form a mosaic that, although in black and white, is lively and colorful and reflects the social picture, its culture and its people. Moreover, each film itself is not only a piece of the total social mirror, but is an autonomous and integrated frame of the cinematic society.
Reducing added resistance using an anti-pitch foil
Creators: name: Avis, John Spencer
Publisher: name: University of British Columbia
Year: 2010

description: In this study, the use of a passive bow anti-pitch foil for the purpose of reducing the vertical motions and added resistance in waves of a small marine vehicle is investigated. The difficulties, limitations and assumptions inherent in studying ships in waves are discussed. A mathematical model is developed incorporating linear strip theory, Joosen added resistance theory and oscillating hydrofoil theory in an attempt to predict the effect of a hypothetical anti-pitch foil on the heave and pitch motions and added resistance in head seas of the 12-metre yacht Canada II. The results of regular head wave towing tank experiments on a 1:8 scale model of Canada II are presented for both the bare hull and for the hull fitted with a model anti-pitch foil to demonstrate the experimental effect of the foil on vertical motions and added resistance. The results of the theoretical and experimental investigations show that the anti-pitch foil is in fact very effective in reducing the motions and added resistance of the Canada II hull. Experimental results show heave amplitude is reduced by as much as 15%, pitch amplitude by 22% and added resistance by as much as 40%. The heave and pitch motion amplitude responses predicted by the linear strip theory for the hull with no foil, do not agree well with experiment, especially in the region around resonance. It is concluded that the linear strip theory used is not completely adequate in predicting the hydrodynamic coefficients and consequently the heave and pitch motions of Canada II due to non-linearities in her hull form. These non-linearities, in particular the flared topsides and large fore and aft overhangs, violate the linear assumptions of strip theory and result in increased hydrodynamic damping and speed dependent restoring coefficients that are not accounted for by theory. The Joosen added resistance theory predictions for the bare hull do agree well with experiment despite the hull non-linearities. The change or percentage reduction in heave and pitch amplitude response due to the addition of the anti-pitch foil is predicted well by the oscillating hydrofoil theory, in spite of the inaccuracies of the strip theory in predicting the actual motions. Also, the Joosen theory predictions of the percentage reduction in added resistance due to the addition of the foil agree very well with experiment. It is concluded that the mathematical model provides a very good conservative estimate of the amount of reduction in heave and pitch motion and added resistance that can be expected from the addition of a passive bow anti-pitch foil. The model could be very useful as a preliminary design tool for naval architects, where no such tool existed before. The findings of this study indicate that the concept of using a passive bow anti-pitch foil to reduce the vertical motions and added resistance in waves is well worth pursuing.
Πίστη και γνώση, άσκηση και δράση: μια θεολογική και ψυχοκριτική προσέγγιση του έργου του Νίκου Καζαντζάκη
Creators: name: Ghetu, Caroline Raluca
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Νίκος Καζαντζάκης
Ψυχοκριτική
Πνευματικός αγώνας
Θάνατος
Nikos Kazantzakis
Psycho-critical analysis psychocritisism
Spiritual struggle
Death

description: Εφαρμόζοντας την ψυχοκριτική μέθοδο του Charles Mauron σε ένα ευρύ corpus των καζαντζακικών έργων, επισημαίνονται οι αναπαραστάσεις του ασυνειδήτου του Νίκου Καζαντζάκη που διεισδύουν στα λογοτεχνικά κείμενά του και συμβάλλουν στην δημιουργία των μυθικών φιγούρων του, οι οποίες επιδίδονται σε έναν ατέρμονα αγώνα αυθυπέρβασης.
description: Applying thepsycho-critical method of Charles Mauron to a large corpus of NikosKazantzakis’ works, we pointed out to which extent the representations from his unconscious pervade the literary texts and contribute tothe creation of the mythical figures engaged in an endless struggle forself-transcendence
Improved Simulation of the Mass Charging for ASTROD I
Creators: name: Bao, Gang
name: Ni, Wei-Tou
name: Shaul, D. N. A.
name: Araujo, H. M.
name: Liu, Lei
name: Sumner, T. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The electrostatic charging of the test mass in ASTROD I (Astrodynamical Space Test of Relativity using Optical Devices I) mission can affect the quality of the science data as a result of spurious Coulomb and Lorentz forces. To estimate the size of the resultant disturbances, credible predictions of charging rates and the charging noise are required. Using the GEANT4 software toolkit, we present a detailed Monte Carlo simulation of the ASTROD I test mass charging due to exposure of the spacecraft to galactic cosmic-ray (GCR) protons and alpha particles (3He, 4He) in the space environment. A positive charging rate of 33.3 e+/s at solar minimum is obtained. This figure reduces by 50% at solar maximum. Based on this charging rate and factoring in the contribution of minor cosmic-ray components, we calculate the acceleration noise and stiffness associated with charging. We conclude that the acceleration noise arising from Coulomb and Lorentz effects are well below the ASTROD I acceleration noise limit at 0.1 mHz both at solar minimum and maximum. The coherent Fourier components due to charging are investigated, it needs to be studied carefully in order to ensure that these do not compromise the quality of science data in the ASTROD I mission.
description: 20 pages, 14 figures, submitted to International Journal of Modern Physics D
Συμβούλιο Ευρωπαϊκών Εκκλησιών και Οικουμενικό Πατριαρχείο στη νέα Ευρώπη (1989 κ. εξ.)
Creators: name: Χαραλαμπίδης, Στυλιανός Δ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Συμβούλιο Ευρωπαϊκών Εκκλησιών
Οικουμενικό Πατριαρχείο
Οικουμενική Χάρτα
Οικουμενική Κίνηση
Conference of European Churches
Ecumenical Patriarchate
Charta Oecumenica
Ecumenical Movement

description: Σκοπός της διατριβής ήταν η μελέτη της συμβολής του Οικουμενικού Πατριαρχείου στη λειτουργία και τις δομές του Συμβουλίου Ευρωπαϊκών Εκκλησιών. Εστιάσαμε στην περίοδο μετά το 1989, χρονιά κατά την οποία διαμορφώνεται ένα νέο ευρωπαϊκό τοπίο, ως συνέπεια της κατάρρευσης του παγκόσμιου διπολισμού. Από τη χρονιά αυτή, εξάλλου, και στο εξής αυξάνεται η συμμετοχή των Ορθοδόξων Εκκλησιών στο Συμβούλιο Ευρωπαϊκών Εκκλησιών. Παρουσιάσαμε τους ιστορικούς και πνευματικούς δεσμούς που συνδέουν την Ευρώπη με την Ορθοδοξία και το Οικουμενικό Πατριαρχείο ειδικότερα. Ασχοληθήκαμε αναλυτικά με όλες τις μετά το έτος 1989 Γενικές Συνελεύσεις του Συμβουλίου Ευρωπαϊκών Εκκλησιών, διερευνώντας κάθε φορά την ιδιαίτερη συμβολή του Οικουμενικού Πατριαρχείου. Εξετάσαμε ενδελεχώς τις σχέσεις της Ρωμαιοκαθολικής Εκκλησίας με το Συμβούλιο Ευρωπαϊκών Εκκλησιών, κάνοντας ειδική αναφορά στις τρεις Ευρωπαϊκές Οικουμενικές Συνελεύσεις (Βασιλεία 1989, Graz 1997, Sibiu 2007) και στην υπογραφή της Charta Oecumenica.
description: The aim of the present thesis was to study the contribution of the Ecumenical Patriarchate to the function and the structures of the Conference of European Churches. We focused on the period after 1989, a year after which a new European landscape was formed as a consequence of the collapse of the bipolar world. Moreover, from this year onwards the participation of the Orthodox Churches in the Conference of European Churches increased rapidly. We presented the historical and spiritual ties linking Orthodoxy and the Ecumenical Patriarchate in particular with Europe. We dealt in detail with all the post – 1989 General Assemblies of the Conference of European Churches, examining the specific contribution of the Ecumenical Patriarchate. We analyzed the relations of the Roman Catholic Church with the Conference of European Churches, with particular reference to the three European Ecumenical Assemblies (Basel 1989, Graz 1997, Sibiu 2007) and the Charta Oecumenica.
A boolean network for studying the macrophages differentiation in SARS-CoV-2 infection
Creators: name: Arias, Manuel Azaid Ordaz
name: Sanchez, Mariana Martinez
name: Yalbi Balderas Martinez
Publisher: name: F1000 Research Limited
Year: 2021

description: The virus SARS-CoV-2 has caused more than one million deaths worldwide. Part of the damage caused by this virus is associated with the host’s immune system’s dysregulation. Macrophages play an essential role in disease progression since deregulated macrophages can lead to immunologic complications such as macrophage activation syndrome, cytokine storm, and acute respiratory distress syndrome. Macrophages are innate immune cells that can detect and respond to pathogens and diverse stimuli. They differentiate into classical M1 macrophages with inflammatory properties and the alternatively activated M2 macrophages with anti-inflammatory properties, which are further sub-categorized into M2a, M2b, M2c, M2d phenotypes. To study the role of macrophages during COVID-19 we constructed a Boolean network of 32 nodes that represent cytokines, signaling pathways and TFs, and 57 interactions. The network has 2112 attractors that can be classified into M1, M2a, M2b, M2c, M2d cell types. The attractors reveal polarizations under actual biological conditions of all phenotypes that we can observe in vivo. Subsequently, we used this boolean-network to study the behavior of macrophages during SARS-CoV-2 infection. This shows that SARS-CoV-2 affects the immune balance of the host.
Comments on Charges and Near-Horizon Data of Black Rings
Creators: name: Hanaki, Kentaro
name: Ohashi, Keisuke
name: Tachikawa, Yuji
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study how the charges of the black rings measured at the asymptotic infinity are encoded in the near-horizon metric and gauge potentials, independent of the detailed structure of the connecting region. Our analysis clarifies how different sets of four-dimensional charges can be assigned to a single five-dimensional object under the Kaluza-Klein reduction. Possible choices are related by the Witten effect on dyons and by the large gauge transformation in four and five dimensions, respectively.
description: 30 pages, 1 figure; v2: additional references; v3: published version
Fokker-Planck type equations for a simple gas and for a semi-relativistic Brownian motion from a relativistic kinetic theory
Creators: name: Chacón--Acosta, Guillermo
name: Kremer, Gilberto M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A covariant Fokker-Planck type equation for a simple gas and an equation for the Brownian motion are derived from a relativistic kinetic theory based on the Boltzmann equation. For the simple gas the dynamic friction four-vector and the diffusion tensor are identified and written in terms of integrals which take into account the collision processes. In the case of Brownian motion, the Brownian particles are considered as non-relativistic whereas the background gas behaves as a relativistic gas. A general expression for the semi-relativistic viscous friction coefficient is obtained and the particular case of constant differential cross-section is analyzed for which the non-relativistic and ultra relativistic limiting cases are calculated.
description: To appear in PRE
The S-parameter in Holographic Technicolor Models
Creators: name: Agashe, Kaustubh
name: Csaki, Csaba
name: Grojean, Christophe
name: Reece, Matthew
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the S parameter, considering especially its sign, in models of electroweak symmetry breaking (EWSB) in extra dimensions, with fermions localized near the UV brane. Such models are conjectured to be dual to 4D strong dynamics triggering EWSB. The motivation for such a study is that a negative value of S can significantly ameliorate the constraints from electroweak precision data on these models, allowing lower mass scales (TeV or below) for the new particles and leading to easier discovery at the LHC. We first extend an earlier proof of S>0 for EWSB by boundary conditions in arbitrary metric to the case of general kinetic functions for the gauge fields or arbitrary kinetic mixing. We then consider EWSB in the bulk by a Higgs VEV showing that S is positive for arbitrary metric and Higgs profile, assuming that the effects from higher-dimensional operators in the 5D theory are sub-leading and can therefore be neglected. For the specific case of AdS_5 with a power law Higgs profile, we also show that S ~ + O(1), including effects of possible kinetic mixing from higher-dimensional operator (of NDA size) in the $5D$ theory. Therefore, our work strongly suggests that S is positive in calculable models in extra dimensions.
description: 21 pages, 2 figures. v2: references added
New attractor mechanism for spherically symmetric extremal black holes
Creators: name: Myung, Yun Soo
name: Kim, Yong-Wan
name: Park, Young-Jai
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We introduce a new attractor mechanism to find the entropy for spherically symmetric extremal black holes. The key ingredient is to find a two-dimensional (2D) dilaton gravity with the dilaton potential $V(ϕ)$. The condition of an attractor is given by $\nabla^2ϕ=V(ϕ_0)$ and $\bar{R}_2=-V^{\prime}(ϕ_0)$ and for a constant dilaton $ ϕ=ϕ_0$, these are also used to find the location of the degenerate horizon $r=r_{e}$ of an extremal black hole. As a nontrivial example, we consider an extremal regular black hole obtained from the coupled system of Einstein gravity and nonlinear electrodynamics. The desired Bekenstein-Hawking entropy is successfully recovered from the generalized entropy formula combined with the 2D dilaton gravity, while the entropy function approach does not work for obtaining this entropy.
description: 20 pages, 4 figures, Accepted for publication in Physical Review D. This version includes revisions suggested by the referee
Ο Μητροπολίτης Μυτιλήνης Ιάκωβος, ο από Δυρραχίου: Από την Εθναρχούσα Εκκλησία στην Εθνική
Creators: name: Οικονομόπουλος, Πέτρος-Εμμανουήλ Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Εθναρχoύσα Εκκλησία
Bόρεια Ήπειρος
Μητρόπολη Μυτιλήνης
Ιάκωβος
Εthnarchist Church
North Epirus
Metropolis of Mytilene
Iakovos

description: Ο Μητροπολίτης Μυτιλήνης Ιάκωβος ο από Δυρραχίου γεννήθηκε στα Μοσχονήσια της Μικράς Ασίας το 1878. Η εποχή στην οποία έζησε χαρακτηρίζεται ως μία μεταβαλλόμενη εποχή, κατά την οποία συντελείται η διάλυση των μεγάλων αυτοκρατοριών της Ευρώπης. Εκλέγεται Μητροπολίτης Δυρραχίου το 1911, λίγο πριν τους Βαλκανικούς Πολέμους του 1912-13. Είναι η εποχή που το αίτημα για εθνική ομοιογένεια, εθνική ενότητα οδηγεί στην ολοκλήρωση της δημιουργίας των εθνικών κρατών των Βαλκανίων και συνεπακόλουθα στη διάσπαση της εθναρχούσας Εκκλησίας με τις αυτοκέφαλες εθνικές Εκκλησίες. Οι τόποι που σημαδεύουν τη ζωή του είναι η Σμύρνη, το Δυρράχιο, η Κορυτσά και η Μυτιλήνη, όπου διακρίθηκε για το πολύπλευρο φιλανθρωπικό, κοινωνικό, πολιτιστικό και ποιμαντικό του έργο. Μέσα από την έρευνα του αρχειακού υλικού και της βιβλιογραφίας παρουσιάζεται η ζωή, το έργο και η πολυσχιδής δράση του Μητροπολίτη Ιακώβου κατά τη διάρκεια της μακράς ποιμαντορίας του.
description: The Metropolitan of Mytilene Iakovos from Durres was born in Moshonisia of Asia Minor in 1878. The period he lived is characterized as a period of great changes, during which the dismantlement of big empires of Europe takes place. He is elected Metropolitan of Durres in 1911, just before the Balkan Wars in 1912-1913. It is a period when the demand for national homogeneity, national cohesion leads to the completeness of the creation of national states of Balkans and as a result to the fracture of ethnarchist Church to autocephalus national Churches. The places which play a major role to his life is Smyrna, Durres, Korce and Mytilene, where he distinguished himself for his multilateral charitable, social, cultural and pastoral work. Throughout research of archives and the bibliography are demonstrated the life, the work and the multifarious actions of Metropolitan Iakovos during his long pastorate.
On plate decompositions of cone multipliers
Creators: name: Garrigos, Gustavo
name: Seeger, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: An important inequality due to Wolff on plate decompositions of cone multipliers is known to have consequences for a variety of problems in harmonic analysis. We observe that the range in Wolff's inequality, for the conic and the spherical versions, can be improved by using bilinear restriction results. We also use this inequality to give some improved estimates on square functions associated to decompositions of cone multipliers in low dimensions. This gives a new L^4 bound for the cone multiplier operator in three dimensions.
description: This is the revised version to appear in the proceedings of the Edinburgh Mathematical Society
On the distillation and purification of phase-diffused squeezed states
Creators: name: Hage, B.
name: Franzen, A.
name: DiGuglielmo, J.
name: Marek, P.
name: Fiurášek, J.
name: Schnabel, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently it was discovered that non-Gaussian decoherence processes, such as phase-diffusion, can be counteracted by purification and distillation protocols that are solely built on Gaussian operations. Here, we make use of this experimentally highly accessible regime, and provide a detailed experimental and theoretical analysis of several strategies for purification/distillation protocols on phase-diffused squeezed states. Our results provide valuable information for the optimization of such protocols with respect to the choice of the trigger quadrature, the trigger threshold value and the probability of generating a distilled state.
Optimizing the deployment of quantum key distribution switch-based networks
Creators: name: Tayduganov, Andrey
name: Rodimin, Vadim
name: Kiktenko, Evgeniy O.
name: Kurochkin, Vladimir
name: Krivoshein, Evgeniy
name: Khanenkov, Sergey
name: Usova, Vasilisa
name: Stefanenko, Lyudmila
name: Kurochkin, Yury
name: Fedorov, A. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum key distribution (QKD) networks provide an infrastructure for establishing information-theoretic secure keys between legitimate parties via quantum and authentic classical channels. The deployment of QKD networks in real-world conditions faces several challenges, which are related in particular to the high costs of QKD devices and the condition to provide reasonable secret key rates. In this work, we present a QKD network architecture that provides a significant reduction in the cost of deploying QKD networks by using optical switches and reducing the number of QKD receiver devices, which use single-photon detectors. We describe the corresponding modification of the QKD network protocol. We also provide estimations for a network link of a total of 670 km length consisting of 8 nodes, and demonstrate that the switch-based architecture allows achieving significant resource savings of up to 28%, while the throughput is reduced by 8% only.
description: 6+5 pages, 6+2 figures, 5 tables
The dynamics and control of an underwater towed vehicle
Creators: name: Hopkin, David A.
Publisher: name: University of British Columbia
Year: 2010

description: A linear, quadratic optimum control strategy is applied to a non-linear dynamic model of an underwater towed vehicle in an effort to minimize the pitching motion of the vehicle during the tracking of a reference input. The dynamic model is a two-dimensional, coupled pitch/heave model. The cable interactions with the vehicle are simplified to steady state, and formed into a multi-variable look-up table used in the non-linear model. The normal force resulting from the body of the vehicle is non-linear and consists of two components, an invisid slender-body theory component, and a separated crossflow component. In addition, the dynamic model includes the non-linear effect of the front airfoil's downwash acting upon the rear airfoils. Aerodynamic testing of a scaled vehicle provides the expressions for the non-linear normal body force and moment. These tests also verify the finite aspect ratio corrections for the airfoils, and the downwash effects of the front airfoils. The linear control strategy is based on linear, quadratic optimum control. Simulation results show that proper selection of the state and input weighting matrices result in minimizing the pitch angle of the vehicle to within the control objectives. In addition, simulations of various observer designs show how the tracking and attitude control varies with the selected measurements.
Magnetic moment orientation and in depth distribution of dysprosium near the surface of DyCo$_{4.6}$ thin films determined by the analysis of their X ray circularly polarized absorption Dy $M_{5}$ spectra
Creators: name: Díaz, Javier
name: Blanco-Roldán, Cristina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated the RE atomic distribution and its magnetic moment orientation at the region near the surface of DyCo$_{4.4 \& 4.6}$ ferrimagnetic amorphous films with perpendicular magnetic anisotropy (PMA). XMCD spectroscopy of the films at the Dy $M_{4,5}$ and Co $L_{2,3}$ edges using total electron yield (TEY) detection was performed at 2 K and 300 K temperatures, and at sample orientations ranged from 0$^{\circ}$ to 70$^{\circ}$ with respect to the magnetic easy axis. The measurements showed an apparent partial decoupling between the cobalt and dysprosium magnetic sublattices. At RT, the magnetic moment per atom of dysprosium was below the minimum value expected if all dysprosium moments were AF coupled to cobalt. At 2 K, the cobalt sublattice presented a stronger magnetic anisotropic behavior than the dysprosium sublattice. A detailed analysis of the circularly polarized spectra of the Dy $M_{5}$ edge, based on the deconvolution of the spectra in their related parallel, antiparallel and transverse to $J_{z}$ spectral components, demonstrates that the spectra are composed by dysprosium with different magnetic moment distributions. The fit of the Dy $M_{5}$ spectra using the $J_{z}$ spectral components evidenced a gradation of dysprosium concentration due to segregation at the region probed by TEY. The topmost layer was magnetically uncoupled from cobalt. At RT, 25$\%$ of the dysprosium magnetic moments in the under layer were found averaged oriented in the same direction as cobalt. The expected weak magnetic coupling of these dysprosium atoms to cobalt would explain the surprisingly lower magnetic anisotropy of the dysprosium sublattice compared to that of cobalt probed by TEY at 2 K.
description: 12 figures, 4 tables, 1 appendix, 19 pages
SpikeForest: a web-based spike sorting validation platform and analysis framework
Creators: name: Magland, Jeremy
name: Jun, James
name: Lovero, Elizabeth
name: Morley, Alex
name: Wysota, Witold
name: Barnett, Alex
Publisher: name: Zenodo
Year: 2019

description: As the collection of automated spike sorting software packages continues to grow, there is much uncertainty and folklore about the quality of their performance in various experimental conditions. Several papers report comparisons on a case-by-case basis, but there is a lack of standardized measures and validation data. Furthermore, there is a potential for bias, such as sub-optimal tuning of competing algorithms, and a focus on one brain region or probe type. Without a fair and transparent comparison, genuine progress in the field remains difficult.

We have addressed this challenge by developing SpikeForest, a reproducible, continuously updating platform which benchmarks the performance of spike sorting codes across a large curated database of electrophysiological recordings with ground truth. With contributions from over a dozen participating labs, our database includes hundreds of recordings, in various brain regions, with thousands of ground truth units (and growing). As well as extracellular recordings with paired intracellular ground truth, we include state-of-the-art simulated recordings, and hybrid synthetic datasets.

In collaboration with the SpikeInterface project, we have wrapped many popular sorting algorithms (including HerdingSpikes2, IronClust, JRCLUST, KiloSort, Kilosort2, Klusta, MountainSort4, SpyKING CIRCUS, Tridesclous, and YASS) under a common Python interface that performs automatic caching of results and guarantees reproducibility via singularity containers and transparency of parameter choices. This also enables researchers themselves to install and run all tested sorters with a single interface.

The large scale of our analysis demands an automatically updating nightly batch on a high performance compute cluster, where hundreds of sorting jobs are run in parallel (> 300 CPU/GPU hours). Results are uploaded to a MongoDB database which is then accessed by our public-facing web site. This site allows intuitive comparison of metrics (precision, recall, overall accuracy, and runtime) across all sorters and recordings, and interactive visual “drilling down” into each sorting output at the single unit or event channel-trace level. The web technology is built on Node.js/React. In cooperation with SpikeInterface, the SpikeForest framework will continuously validate community progress in automated spike sorting, and guide neuroscientists to an optimal choice of sorter and parameters for a wide range of probes and brain regions.
The Eikonal Approach to Gravitational Scattering and Radiation at $\mathcal O(G^3)$
Creators: name: Di Vecchia, Paolo
name: Heissenberg, Carlo
name: Russo, Rodolfo
name: Veneziano, Gabriele
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using $\mathcal N=8$ supergravity as a theoretical laboratory, we extract the 3PM gravitational eikonal for two colliding massive scalars from the classical limit of the corresponding elastic two-loop amplitude. We employ the eikonal phase to obtain the physical deflection angle and to show how its non-relativistic (NR) and ultra-relativistic (UR) regimes are smoothly connected. Such a smooth interpolation rests on keeping contributions to the loop integrals originating from the full soft region, rather than restricting it to its potential sub-region. This task is efficiently carried out by using the method of differential equations with complete near-static boundary conditions. In contrast to the potential-region result, the physical deflection angle includes radiation-reaction contributions that are essential for recovering the finite and universal UR limit implied by general analyticity and crossing arguments. We finally discuss the real emission of massless states, which accounts for the imaginary part of the 3PM eikonal and for the dissipation of energy-momentum. Adopting a direct approach based on unitarity and on the classical limit of the inelastic tree-level amplitude, we are able to treat $\mathcal N=8$ and General Relativity on the same footing, and to complete the conservative 3PM eikonal in Einstein's gravity by the addition of the radiation-reaction contribution. We also show how this approach can be used to compute waveforms, as well as the differential and integrated spectra, for the different radiated massless fields.
description: 88 pages, 7 figures, 2 ancillary files. v2: minor revisions, to appear in JHEP
Machine learning force fields based on local parametrization of dispersion interactions: Application to the phase diagram of C$_{60}$
Creators: name: Muhli, Heikki
name: Chen, Xi
name: Bartók, Albert P.
name: Hernández-León, Patricia
name: Csányi, Gábor
name: Ala-Nissila, Tapio
name: Caro, Miguel A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a comprehensive methodology to enable addition of van der Waals (vdW) corrections to machine learning (ML) atomistic force fields. Using a Gaussian approximation potential (GAP) [Bartók et al., Phys. Rev. Lett. 104, 136403 (2010)] as baseline, we accurately machine learn a local model of atomic polarizabilities based on Hirshfeld volume partitioning of the charge density [Tkatchenko and Scheffler, Phys. Rev. Lett. 102, 073005 (2009)]. These environment-dependent polarizabilities are then used to parametrize a screened London-dispersion approximation to the vdW interactions. Our ML vdW model only needs to learn the charge density partitioning implicitly, by learning the reference Hirshfeld volumes from density functional theory (DFT). In practice, we can predict accurate Hirshfeld volumes from the knowledge of the local atomic environment (atomic positions) alone, making the model highly computationally efficient. For additional efficiency, our ML model of atomic polarizabilities reuses the same many-body atomic descriptors used for the underlying GAP learning of bonded interatomic interactions. We also show how the method enables straightforward computation of gradients of the observables, even when these remain challenging for the reference method (e.g., calculating gradients of the Hirshfeld volumes in DFT). Finally, we demonstrate the approach by studying the phase diagram of C$_{60}$, where vdW effects are important. The need for a highly accurate vdW-inclusive reactive force field is highlighted by modeling the decomposition of the C$_{60}$ molecules taking place at high pressures and temperatures.
Robust optimal periodic control using guaranteed Euler's method
Creators: name: Jerray, Jawher
name: Fribourg, Laurent
name: André, Étienne
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we consider the application of optimal periodic control sequences to switched dynamical systems. The control sequence is obtained using a finite-horizon optimal method based on dynamic programming. We then consider Euler approximate solutions for the system extended with bounded perturbations. The main result gives a simple condition on the perturbed system for guaranteeing the existence of a stable limit cycle of the unperturbed system. An illustrative numerical example is provided which demonstrates the applicability of the method.
description: This is the author version of the manuscript of the same name published in the proceedings of the 2021 American Control Conference (ACC 2021)
Nonlinear Hall effect with time-reversal symmetry: Theory and material realizations
Creators: name: Ortix, Carmine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The appearance of a Hall conductance necessarily requires breaking of time-reversal symmetry, either by an external magnetic field or by the internal magnetization of a material. However, as a second response, Hall dissipationless transverse currents can appear even in time-reversal symmetric conditions in non-centrosymmetric materials. Moreover, this non-linear effect has a quantum origin: it is related to the geometric properties of the electronic wavefunctions and encoded in the dipole moment of the Berry curvature. Here we review the general theory underpinning this effect and discuss various material platforms where non-linear Hall transverse responses have been theoretically proposed and experimentally verified. On the theoretical front, the link between the non-linear Hall effect and the Berry curvature dipole is discussed using Boltzmann transport theory. On the material front, different platforms, including topological crystalline insulators, transition metal dichalcogenides, graphene, and Weyl semimetals are reviewed.
description: Review article; 26 pages, 9 figures
Spin chains with boundary inhomogeneities
Creators: name: Nepomechie, Rafael I.
name: Retore, Ana L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate the effect of introducing a boundary inhomogeneity in the transfer matrix of an integrable open quantum spin chain. We find that it is possible to construct a local Hamiltonian, and to have quantum group symmetry. The boundary inhomogeneity has a profound effect on the Bethe ansatz solution.
description: 15 pages; v2: minor changes, version accepted in JHEP
Editoriale
Creators: name: Di Gregorio, Angela
Publisher: name: Nuovi Autoritarismi e Democrazie: Diritto, Istituzioni, Società (NAD-DIS)
Year: 2019

description: Editoriale al Primo Numero della Rivista Nuovi Autoritarismi e Democrazie: Diritto, Istituzioni, Società (NAD-DIS).
description: Nuovi Autoritarismi e Democrazie: Diritto, Istituzioni, Società (NAD-DIS), V. 1, N. 1 (2019)
Figure rotation of dark halos in CDM simulations
Creators: name: Bryan, S. E.
name: Cress, C. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the figure rotation of dark matter halos identified in Lambda CDM simulations. We find that when strict criteria are used to select suitable halos for study, 5 of the 222 halos identified in our z=0 simulation output undergo coherent figure rotation over a 5h^{-1}Gyr period. We discuss the effects of varying the selection criteria and find that pattern speeds for a much larger fraction of the halos can be measured when the criteria are relaxed. Pattern speeds measured over a 1h^{-1}Gyr period follow a log-normal distribution, centred at Omega_p = 0.25h rad/Gyr with a maximum value of 0.94h rad/Gyr. Over a 5h^{-1}Gyr period, the average pattern speed of a halo is about 0.1h rad/Gyr and the largest pattern speed found is 0.24h rad/Gyr. Less than half of the selected halos showed alignment between their figure rotation axis and minor axis, the exact fraction being somewhat dependent on how one defines a halo. While the pattern speeds observed are lower than those generally thought capable of causing spiral structure, we note that coherent figure rotation is found over very long periods and argue that further simulations would be required before strong conclusions about spiral structure in all galaxies could be drawn. We find no correlation between halo properties such as total mass and the pattern speed.
description: accepted to MNRAS, 8 pages
Odd Triplet Pairing in clean Superconductor/Ferromagnet heterostructures
Creators: name: Halterman, Klaus
name: Barsic, Paul H.
name: Valls, Oriol T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study triplet pairing correlations in clean Ferromagnet (F)/Superconductor (S) nanojunctions, via fully self consistent solution of the Bogoliubov-de Gennes equations. We consider FSF trilayers, with S being an s-wave superconductor, and an arbitrary angle $α$ between the magnetizations of the two F layers. We find that contrary to some previous expectations, triplet correlations, odd in time, are induced in both the S and F layers in the clean limit. We investigate their behavior as a function of time, position, and $α$. The triplet amplitudes are largest at times on the order of the inverse ``Debye'' frequency, and at that time scale they are long ranged in both S and F. The zero temperature condensation energy is found to be lowest when the magnetizations are antiparallel.
description: Four pages, including four figures