cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ανάλυση συσχετίσεων χρεωκοπίας και πολλαπλών χρεωκοπιών
Creators: name: Γεωργαντά, Ουρανία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Συσχετίσεις χρεωκοπίας
Πολλαπλές χρεωκοπίες

description: Στο πρώτο κεφάλαιο ξεκινάμε προσεγγίζοντας το θέμα του κινδύνου χρεοκοπίας μιας επιχείρησης και κάνοντας μια γενική εισαγωγή στο θέμα των συσχετίσεων χρεοκοπίας. Επίσης αναλύουμε κάποιους βασικούς κανόνες που διέπουν την αγορά των παραγώγων καθώς και τις έννοιες θετική και αρνητική συσχέτιση χρεοκοπίας.Στο δεύτερο κεφάλαιο θα μελετήσουμε κάποια βασικά προκαταρκτικά σχόλια που αφορούν στις συσχετίσεις χρεοκοπιών. Θα ακολουθήσουν κάποιες βασικές εφαρμογές πάνω στην τιμολόγηση περιουσιακών στοιχείων (asset pricing) και τη διαχείριση κινδύνου (risk management). Στο τέλος του κεφαλαίου θα περιγράψουμε τα κύρια στοιχεία που χαρακτηρίζουν μια επιχείρηση και θα παραθέσουμε τον τρόπο υπολογισμού της πιθανότητας χρεοκοπίας. Στο τρίτο κεφάλαιο θα αναλύσουμε ένα βασικό πρώτου χρόνου διέλευσης εκτίμησης αξιοπιστίας μοντέλο για τις συσχετίσεις χρεοκοπιών. Αρχικά θα παραθέσουμε τις υποθέσεις, πάνω στις οποίες βασίζεται στο μοντέλο και στη συνέχεια θα το αναπτύξουμε.Στο τέταρτο κεφάλαιο θα προβούμε σε μια ανάλυση των συνεπειών του μοντέλου. Θα ερευνήσουμε τις θεωρητικές του συνέπειες, καθώς και τις συνέπειες στη διαχείριση κινδύνου (risk management).Στο πέμπτο κεφάλαιο θα μελετήσουμε την πρακτική εφαρμογή του μοντέλου μέσα από δύο μεθόδους.Στο έκτο κεφάλαιο θα συγκρίνουμε το μοντέλο που αναπτύχθηκε στο τρίτο κεφάλαιο με αυτό που ανέπτυξε ο Merton στην εργασία του “On the pricing of corporate debt: The risk structure of interest rates” , 1974.
description: In the first chapter we will analyze the subject of default risk and we will make an introduction to default correlations between firms. In addition we will study the terms positive and negative default correlation. In the second chapter we will see some basic preliminary remarks that concern default correlations. Then applications of default correlations on asset pricing and risk management will follow. In the end of the chapter we will describe a firm’s basic elements and analyze a way to calculate the default probability of a firm.The third chapter provides a basic model for default correlations based on first - passage - times, given the assumptions.The forth chapter provides theoretical implications and risk management implications of the model. The fifth chapter provides applications of the model, offering two approaches to estimate the parameters.The sixth chapter provides a comparison with Merton’s default model, based on his article "On the pricing of corporate debt: The risk structure of interest rates", 1974.
Correction of the VIR-visible data set from the Dawn mission at Vesta
Creators: name: Rousseau, B.
name: De Sanctis, M. C
name: Raponi, A.
name: Ciarniello, M.
name: Ammannito, E.
name: Scarica, P.
name: Fonte, S.
name: Frigeri, A.
name: Carrozzo, F. G
name: Tosi, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: This work describes the correction method applied to the dataset acquired at the asteroid (4) Vesta by the visible channel of the visible and infrared mapping spectrometer. The rising detector temperature during data acquisitions in the visible wavelengths leads to a spectral slope increase over the whole spectral range. This limits the accuracy of the studies of the Vesta surface in this wavelength range. Here, we detail an empirical method to correct for the visible detector temperature dependency while taking into account the specificity of the Vesta dataset.
description: 6 pages, 5 figures and 1 table excluding supplementary material
Η αξιολόγηση της ικανότητας χρήσης νοηματικών γλωσσών
Creators: name: Χορτομάρη, Αννα Κων/νου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Νοηματική γλώσσα
Αξιολόγηση νοηματικής γλώσσας
Χρήση νοηματικής γλώσσας
Sign language
Use of sign language

description: Η κατοχύρωση της νοηματικής γλώσσας από την Ευρωπαϊκή Ενωση ως μειονοτική γλώσσα έθεσε καινούργια δεδομένα για τη χρήση της. Ετσι αυξήθηκε το ενδιαφέρον για την εκμάθηση της νοηματικής γλώσσας σε όλον τον κόσμο. Συνέπεια όλων αυτών είναι να δημιουργηθουν διάφορα συστήματα εξέτασης τα οποία να πιστοποιούν την ικανότητα χρήσης της νοηματικής γλώσσας. Αναλύονται τα συστήματα της Αγγλίας, της Γερμανίας, του Καναδά και της Ελλάδας. Στην τελευταία μάλιστα επισημαίνονται τα προβλήματα του συστήματος και προτείνονται ορισμένες προτάσεις
description: The recognition of sign language as aminority language in Europe, made the intrest for sign language to increase. As a result many countries made exams that certify the knowlegde of sing language. Here are analysed the systems of theses exams in England, in Germany, in Canada and in Greece. In Greece the system for the certification of skills in sign language has several problems and for this reason are proposed some solutions
Open maps having the Bula property
Creators: name: Gutev, Valentin
name: Valov, Vesko
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54F45, 54F35, 54C60, 54C65

description: Every open continuous map f from a space X onto a paracompact C-space Y admits two disjoint closed subsets of X so that their image by f is Y provided all fibers of f are infinite and C*-embedded in X. Applications are demonstrated for the existence of "disjoint" usco multiselections of set-valued l.s.c. mappings defined on paracompact C-spaces, and for special type of factorizations of open continuous maps from metrizable spaces onto paracompact C-spaces. This settles several open questions.
description: 16 pages
Statistical Inference on the Cure Time
Creators: name: Wang, Yueh
name: Hung, Hung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: In population-based cancer survival analysis, the net survival is important for government to assess health care programs. For decades, it is observed that the net survival reaches a plateau after long-term follow-up, this is so called ``statistical cure''. Several methods were proposed to address the statistical cure. Besides, the cure time can be used to evaluate the time period of a health care program for a specific patient population, and it also can be helpful for a clinician to explain the prognosis for patients, therefore the cure time is an important health care index. However, those proposed methods assume the cure time to be infinity, thus it is inconvenient to make inference on the cure time. In this dissertation, we define a more general concept of statistical cure via conditional survival. Based on the newly defined statistical cure, the cure time is well defined. We develop cure time model methodologies and show a variety of properties through simulation. In data analysis, cure times are estimated for 22 major cancers in Taiwan, we further use colorectal cancer data as an example to conduct statistical inference via cure time model with covariate sex, age group, and stage. This dissertation provides a methodology to obtain cure time estimate, which can contribute to public health policy making.
description: 77 pages, 29 figures, PhD dissertation, Ins. of Epidemiology and Preventive Medicine, National Taiwan University
SHAXSNI O'RGANISHDA PSIXOLOGIK USULLARDAN FOYDALANISH
Creators: name: Hamroqulova D.F., Qoryog'dieva M.
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya: Shaxsni o'rganishda psixologik usullar, shaxsning ichki dunyosini, uning psixik xususiyatlarini va turli holatlarda qanday xulq-atvor ko'rsatishini aniqlashda muhim rol o'ynaydi. Psixologik usullardan to'g'ri va samarali foydalanish, psixologik yordam ko'rsatishda, shaxsni rivojlantirishda va turli muammolarni hal etishda katta ahamiyatga ega. Mazkur mavzu psixologik usullarni amaliyotda qo'llash va ularning shaxsni o'rganishda qanday yordam berishini yoritishga qaratilgan.
Η προσωρινή κράτηση
Creators: name: Σκανδάλη, Ιωάννα Επαμεινώνδα
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Προσωρινή κράτηση
Αίτιση άρσης ή αντικατάστασης
Συρροή εγκλημάτων
Detention under remand
Wrot or removal of substitution
Confluence

description: Η διπλωματική εργασία πραγματεύεται το ζήτημα της "προσωρινής κράτησης" του κατηγορούμενου. Αναλύονται οι προϋποθέσεις επιβολής της, οι σκοποί τους οποίους εξυπηρετεί, καθώς και η δογματική θεμελίωση των λόγων επιβολής της. Αναφέρεται η ιστορική διαδρομή του θεσμού, η συνταγματική εξέλιξη και κατοχύρωσή του και η σχέση του με την Ευρωπαϊκή Σύμβαση των δικαιωμάτων του ανθρώπου. Επίσης γίνεται αναφορά στην άμυνα του κατηγορούμενου απέναντι στην επιβολή του επαχθούς μέτρου και ειδικότερα στα δικαιώματα της προσφυγής και της αίτησης άρσης ή αντικατάστασης του θεσμού. Επιπλέον αναλύεται η ιδιαίτερη περίπτωση της επιβολής της προσωρινής κράτησης σε έφηβους κατηγορούμενους, αλλά και το ζήτημα της αποζημίωσης των αδίκως κρατηθέντων και μετέπειτα αθωωθέντων κατηγορουμένων
description: The present thesis deals with the subject of the detention under rewand. It contains a presentation of the conditions under which an accused person can be detained under rewand and the purposes of the statuete. It also refers to the ways the prisoner under rewand can contradct to these onerous measures. It referes to the prisoner's ynder rewand rights of legal redress and writ of removal or subtitution of the detention under rewand. Its also presented the special case in which minor accused pople are detained under rewand
The radial structure of planetary bodies formed by the streaming instability
Creators: name: Visser, Rico G.
name: Drążkowska, Joanna
name: Dominik, Carsten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Comets and small planetesimals are believed to contain primordial building blocks in the form of millimeter to centimeter sized pebbles. One of the viable growing mechanisms to form these small bodies is through the streaming instability (SI) in which pebbles cluster and gravitationally collapse towards a planetesimal or comet in the presence of gas drag. However, most SI simulations are global and lack the resolution to follow the final collapse stage of a pebble cloud within its Hill radius. We aim to track the collapse of a gravitationally bound pebble cloud subject to mutual collisions and gas drag with the representative particle approach. We determine the radial pebble size distribution of the collapsed core and the impact of mutual pebble collisions on the pebble size distribution. We find that virial equilibrium is never reached during the cloud evolution and that, in general, pebbles with given Stokes number (St) collapse towards an optically thick core in a sequence from aerodynamically largest to aerodynamically smallest. We show that at the location for which the core becomes optically thick, the terminal velocity is well below the fragmentation threshold velocity. While collisional processing is negligible during cloud evolution, the collisions that do occur are sticking. These results support the observations that comets and small planetary bodies are composed of primordial pebbles in the milimeter to centimeter size range
description: 15 pages, accepted in A&A on January 21, 2021
Low-energy Variety of Asymmetric SUSY Flavor Structure
Creators: name: Inoue, Kenzo
name: Kojima, Kentaro
name: Yoshioka, Koichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this letter we study the low-energy phenomenology and cosmological implications of supersymmetric grand unified theory with asymmetric flavor structure, which is suggested by the recent observation of fermion masses and mixing angles. The predictions of the scenario are rather dependent on a Yukawa parameter fixed by group-theoretical argument. A reduced value of the parameter gives a resolution to the sign problem of supersymmetric Higgs mass μ, with which the theory becomes simultaneously consistent with the experimental data of bottom/tau mass ratio, flavor-changing rare decay of bottom quark, and the muon anomalous magnetic moment. The relic abundance of the lightest superparticle as cold dark matter of the universe is also investigated in light of the three-years WMAP result. A new source of flavor violation is found in the D-term induced scalar masses, that is a distinctive signature of the generation asymmetry.
description: 15 pages, 4 figures, minor comments and references added
Δημιουργία διαδραστικού περιβάλλοντος λήψης παραγγελιών επιχείρησης μέσω Web και αυτοματοποιημένης σχεδίασης
Creators: name: Μπάμπας, Δημήτριος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Διαδραστικότητα
Σύστημα λήψης παραγγελιών
Αυτοματοποιημένη σχεδίαση
Τεχνολογίες δυναμικών ιστοσελίδων
Μηχανολογικά τεμάχια
Μηχανουργικές κατεργασίες
Interactive web interface
On-line ordering
Automated design
Dynamic web sites technologies
Machined parts
Fabrication

description: Η εργασία εξετάζει τα θέματα που πρέπει να αντιμετωπιστούν προκειμένου να αναπτυχθεί ένας δυναμικός δικτυακός τόπος, ο οποίος επιτρέεπι την παραγγελιοληψία μηχανολογικών τεμαχίων από μία κατασκευαστική εταιρεία. Συγκεκριμένα εξετάζει θέματα όπως η επιλογή του μοντέλου οργάνωσης των δεδομένων, ο καθορισμός των σχεδιαστικών αρχών και η επιλογής της πλατφόρμας ανάπτυξης.Επιπρόσθετα επιδιώκει να εντοπίσει τρόπους με τους οποίους μπορεί να γίνει μεταφορά των δεδομένων που θα ληφθούν κατά την τοποθέτηση μιας παραγγελίας σε κάποιο σχεδιαστικό πρόγραμμα, έτσι ώστε να δημιουργηθούν αυτοματοποιημένα τα κατασκευαστικά σχέδια του προϊόντος που έχει παραγγελθεί. Τέλος κάνει μια προσπάθεια καταγραφής ανάλογων υλοποιήσεων που υφίστανται αυτή τη στιγμή στο διαδίκτυο. Στα πλαίσια αυτής της προσπάθειας γίνεται μια αξιολόγηση της διαδικτυακής παρουσίας και ειδικότερα των συστημάτων on-line παραγγελιοληψίας κάποιοων από τις μεγαλύτερες κατασκευάστριες εταιρείες ανελκυστήρων. Επιπρόσθετα παρουσιάζεται ως case study η ιστοσελίδα ενός από τα πρώτα ηλεκτρονικά μηχανουργία.
description: The purpose of this document is to identify and describe the factors that a company must examine, in order to create an interactive on-line ordering system, for machined parts.Particularly, subjects as the choice of the appropriate database model, the adoption of the right design principals and the choice of the proper development platform are addressed. Furthermore, its' trying to find out methods and tools, with which the data acquired from an on-line ordering system can pass to a CAD system, in order to automate the creation of the ordered part drawing. Finally, two related implementations are presented. On-line ordering systems of five important manufacturers of elevators is firstly presented while secondly an on-line fabrication that produces customized parts, is also analyzed
Vorausschauend zurückblicken
Creators: name: Fuchs, Britta
name: Gugerell, Katharina
Publisher: name: Jahrbuch für Geschichte des ländlichen Raumes
Year: 2022

description: Jahrbuch für Geschichte des ländlichen Raumes, Bd. 8 (2011): Aus der Mitte der Landschaft. Landschaftswahrnehmung in Selbstzeugnissen
Nucleon axial and pseudoscalar form factors from lattice QCD at the physical point
Creators: name: Alexandrou, C.
name: Bacchio, S.
name: Constantinou, M.
name: Dimopoulos, P.
name: Finkenrath, J.
name: Hadjiyiannakou, K.
name: Jansen, K.
name: Koutsou, G.
name: Kostrzewa, B.
name: Leontiou, T.
name: Urbach, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute the nucleon axial and induced pseudoscalar form factors using three ensembles of gauge configurations, generated with dynamical light quarks with mass tuned to approximately their physical value. One of the ensembles also includes the strange and charm quarks with their mass close to physical. The latter ensemble has large statistics and finer lattice spacing and it is used to obtain final results, while the other two are used for assessing volume effects. The pseudoscalar form factor is also computed using these ensembles. We examine the momentum dependence of these form factors as well as relations based on pion pole dominance and the partially conserved axial-vector current hypothesis.
description: 25 pages and 27 figures
Do radio core-halos and cold fronts in non major merging clusters originate from the same gas sloshing?
Creators: name: Mazzotta, Pasquale
name: Giacintucci, Simona
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show an interesting correlation between the surface brightness and temperature structure of the relaxed clusters RXJ1720.1+2638 and MS1455.0+2232, hosting a pair of cold fronts, and their central core--halo radio source. We discuss the possibility that the origin of this diffuse radio emission may be strictly connected with the gas sloshing mechanism suggested to explain the formation of cold fronts in non major merging clusters. We show that the radiative lifetime of the relativistic electrons is much shorter than the timescale on which they can be transported from the central galaxy up to the radius of the outermost cold front. This strongly indicates that the observed diffuse radio emission is likely produced by electrons re--accelerated via some kind of turbulence generated within the cluster volume limited by the cold fronts during the gas sloshing.
description: 4 pages inc. 6 figures (2color). Accepted for publication in ApJL
Topografische Ansichten und ihr Wert für Fragen der Wahrnehmungsgeschichte
Creators: name: Andraschek-Holzer, Ralph
Publisher: name: Jahrbuch für Geschichte des ländlichen Raumes
Year: 2022

description: Jahrbuch für Geschichte des ländlichen Raumes, Bd. 8 (2011): Aus der Mitte der Landschaft. Landschaftswahrnehmung in Selbstzeugnissen
Twisting and Rieffel's deformation of locally compact quantum groups. Deformation of the Haar measure
Creators: name: Fima, Pierre
name: Vainerman, Leonid
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L65; 46L52

description: We develop the twisting construction for locally compact quantum groups. A new feature, in contrast to the previous work of M. Enock and the second author, is a non-trivial deformation of the Haar measure. Then we construct Rieffel's deformation of locally compact quantum groups and show that it is dual to the twisting. This allows to give new interesting concrete examples of locally compact quantum groups, in particular, deformations of the classical $az+b$ group and of the Woronowicz' quantum $az+b$ group.
Coupled cavity QED for coherent control of photon transmission (I): Green function approach for hybrid systems with two-level doping
Creators: name: Hu, F. M.
name: Zhou, Lan
name: Shi, Tao
name: Sun, C. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This is the first one of a series of our papers theoretically studying the coherent control of photon transmission along the coupled resonator optical waveguide (CROW) by doping artificial atoms for various hybrid structures. We will provide the several approaches correspondingly based on Green function, the mean field method and spin wave theory et al. In the present paper we adopt the two-time Green function approach to study the coherent transmission photon in a CROW with homogeneous couplings, each cavity of which is doped by a two-level artificial atom. We calculate the two-time correlation function for photon in the weak-coupling case. Its poles predict the exact dispersion relation, which results in the group velocity coherently controlled by the collective excitation of the doping atoms. We emphasize the role of the population inversion of doping atoms induced by some polarization mechanism.
description: 11 pages, 9 figures
Κινηματική της παραμόρφωσης της ζώνης Βοιωτίας στο όρος Ελικών (Στερεά Ελλάδα)
Creators: name: Προγκάκη, Βασιλική Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Ζώνη Βοιωτίας
Κινηματική
Τεκτονική
Φλύχης Βοιωτίας
Παραμόρφωση
Ελικώνας
Beotian zone
Kinematics
Tectonics
Beotian flysch
Deformation
Helikonas

description: Η παρούσα εργασία ασχολείται με την κινηματικής της παραμόρφωσης της ζώνης Βοιωτίας, στην περιοχή του Ελικώνα. Δίνονται γενικά στοιχεία για την περιοχή μελέτης και αναλύεται η γεωλογία, τεκτονική και γεωτεκτονική εξέλιξη της περιοχής. Παρουσιάζονται ανά περιοχές, οι εργασίες υπαίθρου που περιλαμβάνουν τα στοιχίεα των τεκτονικών μετρήσεων, δίκτυα Schmidt, φωτογραφικό υολικό και δίνεται ο τελικός χάρτης της περιοχής μελέτης (με τα διαγράμματα), μια γενική σύνοψη των εργασιών υπαίθρου όπως επίσης και οι απαραίτητες γεωλογικές τομές τόσο από την περιοχή μελέτης, αλλά και την ευρύτερη περιοχής. Κλείνοντας δίνοντα τα συμπεράσματα της εργασίας
description: This paper is about the kinematic deformation of the Beotian zone, on the Helikonas mountain. A general information is presented and especially the geology, tectonics and the evolution of the area. The field work (Photos, Schmidt diagrams and the final map) is also presented in detail, including the final map and the geological cross-sections of the region. Summing up, there is an extensive presentation of the results of this thesis
Kultur.Land.(Wirt)schaft – Strategien für die Kulturlandschaft der Zukunft
Creators: name: Siegl, Gerhard
name: Schermer, Markus
name: Tappeiner, Ulrike
name: Tasser, Erich
Publisher: name: Jahrbuch für Geschichte des ländlichen Raumes
Year: 2022

description: Jahrbuch für Geschichte des ländlichen Raumes, Bd. 8 (2011): Aus der Mitte der Landschaft. Landschaftswahrnehmung in Selbstzeugnissen
Αnna Αkerhielm: μια Σουηδέζα στην Ελλάδα την εποχή του Στ' βενετοτουρκικού πολέμου (1684-1699)
Creators: name: Βραδέλη, Δέσποινα Θεοδώρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Anna Akerhielm
Morosini
Konigsmark
Akropolis
Venice
Peloponnese
Ακρόπολη
Βενετία
Πελοπόννησος

description: Κατά τον στ' βενετοτουρκικό πόλεμο (1684-1699), η σουηδέζα Anna Agriconia Akerhielm βρέθηκε στην Ελλάδα συνοδεύοντας τη σύζυγο του Konigsmark, αρχιστρατήγου των Βενετών στον παραπάνω πόλεμο. Το διάστημα αυτό (1686-1688) στα κείμενά της (επιστολές προς τη Σουηδία και ημερολόγιο) δίνει ακριβείς και έγκυρες πληροφορίες για τον πόλεμο και στοιχεία για την Ελλάδα. Η Akerhielm χαρακτηριζόταν από φιλομάθεια, αρχαιογνωσία, παρατηρητικότητα, αφοσίωση. Τα κείμενά της αποτελούν αξιόλογη και αξιόπιστη πηγή για τον συγκεκριμένο πόλεμο και την Ελλάδα της περιόδου αυτής
description: During the 6th Venetian-Turkish War (1684-1699) the Swede Anna Agriconia Akerhielm come to Greece following Konigsmarkswife. Konigsmark was the general of the venetian army, in this war. In Akerhielms texts of this time (1686-1688) (correspondence with Sweden and diary) there is an exact and valid information about the war and Greece. Akerhielm was eager of learning, knowledgabre about ancient Greece, observant and devoted. Her texts are a remarkable and truworthy source for this war and Greece at that time
Hamiltonian dynamics of gonihedric string theory
Creators: name: Molgado, Alberto
name: Rojas, Efrain
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 81T30, 53Z05, 70H50, 70H45

description: We develop in a consistent manner the Ostrogradski-Hamilton framework for gonihedric string theory. The local action describing this model, being invariant under reparametrizations, depends on the modulus of the mean extrinsic curvature of the worldsheet swept out by the string, and thus we are confronted with a genuine second-order in derivatives field theory. In our geometric approach, we consider the embedding functions as the field variables and, even though the highly non-linear dependence of the action on these variables, we are able to complete the classical analysis of the emerging constraints for which, after implementing a Dirac bracket, we are able to identify both the gauge transformations and the proper physical degrees of freedom of the model. The Ostrogradski-Hamilton framework is thus considerable robust as one may recover in a straightforward and consistent manner some existing results reported in the literature. Further, in consequence of our geometrical treatment, we are able to unambiguously recover as a by-product the Hamiltonian approach for a particular relativistic point-particle limit associated with the gonihedric string action, that is, a model linearly depending on the first Frenet-Serret curvature.
description: 24 pages, 1 figure
The Upper Bound on the Tensor-to-Scalar Ratio Consistent with Quantum Gravity
Creators: name: Wu, Lina
name: Gao, Qing
name: Gong, Yungui
name: Jia, Yiding
name: Li, Tianjun
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the polynomial inflation with the tensor-to-scalar ratio as large as possible which can be consistent with the Quantum Gravity (QG) corrections and Effective Field Theory (EFT). To get a minimal field excursion $Δϕ$ for enough e-folding number $N$, the inflaton field traverses an extremely flat part of the scalar potential, which results in the Lyth bound to be violated. We get a CMB signal consistent with Planck data by numerically computing the equation of motion for inflaton $ϕ$ and using Mukhanov-Sasaki formalism for primordial spectrum. Inflation ends at Hubble slow-roll parameter $ε_1^H=1$ or $\ddot{a}=0$. Interestingly, we find an excellent practical bound on the inflaton excursion in the format $a+b{\sqrt r}$, where $a$ is a tiny real number and $b$ is at the order 1. To be consistent with QG/EFT and suppress the high-dimensional operators, we show that the concrete condition on inflaton excursion is $\frac{Δϕ}{M_{\rm Pl}} < 0.2 \times \sqrt{10}\simeq 0.632$. For $n_s=0.9649$, $N_e=55$, and $\frac{Δϕ}{M_{\rm Pl}} < 0.632$, we predict that the tensor-to-scalar ratio is smaller than 0.0012 for such polynomial inflation to be consistent with QG/EFT.
description: 12 pages
Automatic Optimizations for Stream-based Monitoring Languages
Creators: name: Baumeister, Jan
name: Finkbeiner, Bernd
name: Kruse, Matthis
name: Schwenger, Maximilian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences
subject: D.3.3
subject: 68M01

description: Runtime monitors that are specified in a stream-based monitoring language tend to be easier to understand, maintain, and reuse than those written in a standard programming language. Because of their formal semantics, such specification languages are also a natural choice for safety-critical applications. Unlike for standard programming languages, there is, however, so far very little support for automatic code optimization. In this paper, we present the first collection of code transformations for the stream-based monitoring language RTLola. We show that classic compiler optimizations, such as Sparse Conditional Constant Propagation and Common Subexpression Elimination, can be adapted to monitoring specifications. We also develop new transformations -- Pacing Type Refinement and Filter Refinement -- which exploit the specific modular structure of RTLola as well as the implementation freedom afforded by a declarative specification language. We demonstrate the significant impact of the code transformations on benchmarks from the monitoring of unmanned aircraft systems (UAS).
description: 20th International Conference on Runtime Verification (2020)
Sensitivity Study of 1986 AASHTO Guide for Design of Pavement Structures
Creators: name: Southgate, Herbert F.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1991
Subjects: subject: Transportation Engineering

description: A sensitivity study of 14 items added to the 1986 AASHTO Guide for Design of Pavement Structures indicated: (1) variations in percent reliability were most influential on the design EAL for the same pavement structure while (2) variations in standard deviations had minimal effects. (3) Resilient moduli for base and subbase materials are very dependent upon stress state (or bulk stress). (4) A method was developed to quantify the effect of drainage capabilities for various soils and its effect upon reduction in structural coefficients for base and subbase materials. (5) Literature review revealed 13 relationships to define soil stiffness. The 1986 Guide has two equations for subgrade resilient modulus that yield results differing by factors of 2 to 10. Caution in their use cannot be over emphasized. (6) A method to account for environmental changes in subgrade materials is included in the 1986 Guide. (6) Temperature effects upon asphaltic concrete stiffness are not included. Sensitivity studies showed that temperature effects on pavement stiffness and variations in Structural Number far overshadow variations in subgrade stiffness. (7) The amount of material pumped from under rigid pavements appears to be a function of the number of axles passing over the spot rather than the number of groups of axles. (8) Kentucky and AASHTO load equivalencies were compared for the same stream of truck traffic. Fatigue data from the AASHO Road Test were used to compare the Kentucky and AASHTO thickness designs for the same soil stiffness. (9) The inclusion of mechanistic principles in pavement design was evaluated and discussed. (10) A value of 3.1 is recommended for the load transfer coefficient, J, because trucks travel with their tires located at the pavement-shoulder joint. (11) Kentucky employs most of the recommended rehabilitation procedures, or has more sophisticated procedures for those not being used. In some cases, economics has ruled out one, or more, of these procedures. (12) Kentucky thickness design methods include low volume roads. (13) Life cycle costs and pavement management were not included in this study because they are subjects of individual studies currently in progress.
A Topological Design Tool for the Synthesis of Antenna Radiation Patterns
Creators: name: Barbuto, Mirko
name: Miri, Mohammad-Ali
name: Alù, Andrea
name: Bilotti, Filiberto
name: Toscano, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Patch antennas are among the most popular radiating elements, yet their quasi-2-D structure reduces the degrees of freedom available to tailor their radiation pattern. To overcome this limitation, a possible solution consists in etching on a grounded substrate two concentric radiating elements and combining two modes (one for each element) with proper amplitude/phase relations. Although this technique leads, in principle, to an infinite number of possible configurations (i.e., each patch element can support an infinite number of modes), the theoretical and experimental verifications available in the literature are limited to the first two radiating modes (TM 11 and TM 21 ) of a circular patch antenna. Recently, we have shown that the design of this circular patch can be effectively performed by exploiting the topological properties of vortex fields and, in particular, by controlling the phase singularity exhibited by the higher order right-handed circularly polarized (RHCP) TM 21 mode of the circular patch. Since the number of RHCP higher order modes of a circular patch is infinite, we can in principle deal with an arbitrary number of phase singularity points, whose combined control leads to unprecedented possibilities to shape the radiation pattern of a circular patch. In this article, we present a complete design tool to determine the number and position of phase singularity points arising when combining the RHCP modes of a circular patch antenna and, eventually, manipulate them to synthesize the required radiation pattern. As a realistic application example, we show how the proposed tool can be used to effectively design a single antenna whose radiation pattern can be properly tailored to switch between two different states, i.e., a sector and a saddle shape, widely used in base stations for mobile and satellite communications, respectively.
Global Exponential Stability of Almost Periodic Solution for A Large Class of Delayed Dynamical Systems
Creators: name: Lu, Wenlian
name: Chen, Tianping
Publisher: name: arXiv
Year: 2006
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Research of delayed neural networks with variable self-inhibitions, inter-connection weights, and inputs is an important issue. %In the real world, self-inhibitions, %inter-connection weights, and inputs should vary through time. In In this paper, we discuss a large class of delayed dynamical systems with almost periodic self-inhibitions, inter-connection weights, and inputs. This model is universal and includes delayed systems with time-varying delays, distributed delays as well as combination of both. We prove that under some mild conditions, the system has a unique almost periodic solution, which is globally exponentially stable. We propose a new approach, which is independent of existing theory concerning with existence of almost periodic solution for dynamical systems.
The forces on pulp fibres during refining
Creators: name: Senger, John Jaa
Publisher: name: University of British Columbia
Year: 2009

description: The refining process is widely used in the pulp and paper industry for the production of woodpulps or to develop the papermaking properties of wood fibres through repeated application of strain. The mechanical action of refiners is commonly characterized using energy-based methods, but Page has suggested that characterizing the stress-strain history of fibres would lead to a better understanding of the refining process [Fundamentals of Papermaking, 9th Fundamental Res. Symp., Vol 1, p. 1-38, 1989]. Recent work by Martinez et al. [J. Pulp Paper Sci., 23(1):Jll-18, 1997] and Batchelor et al. [J. Pulp Paper Sci., 23(1):J40-45, 1997] has produced a model of the forces imposed on agglomerates of fibres, called floes, when they are caught between refiner bars. The model assumes a linear stress-strain relationship during floe compression. However, in this work, experiments performed in a laboratory single bar refiner have shown that the stress-strain relationship becomes non-linear at high strain. The present work proposes a new model to predict the normal stress resulting from floe compression between the bars of a refiner. The model accounts for two separate mechanisms to explain the development of this normal stress: fibre bending and radial compression of fibres. The relative importance of the two mechanisms depends on the fibre and floe properties and the level of strain. Experiments have shown that the model accurately predicts the stress-strain behaviour over a wide range of strain and floe properties. For mechanical pulp floes, fibre bending was shown to account for, on average, 65% of the total normal stress, while fibre compression explained the other 35%. For a previously dried kraft pulp, the normal stress could be modeled with good accuracy by accounting for fibre bending alone. The shear force between the refiner bars was also measured in these experiments, and it was found to be directly proportional to the normal force through a coefficient of friction. Values for the coefficient of friction varied between 0.26 and 0.32 depending on the type of pulp considered.
Auf dem Weg zur Sichtbarkeit
Creators: name: Lanzinger, Margareth
name: Sauer, Edith
Publisher: name: Jahrbuch für Geschichte des ländlichen Raumes
Year: 2022

description: Jahrbuch für Geschichte des ländlichen Raumes, Bd. 8 (2011): Aus der Mitte der Landschaft. Landschaftswahrnehmung in Selbstzeugnissen
Experimental disagreements with Extended Unitarity
Creators: name: Bugg, D. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In production processes, e.g. J/Psi -> omega-pi-pi or pbar-p -> 3pi, the sigma and fo(980) overlap in the same partial wave. The conjecture of Extended Unitarity (EU) states that the pi-pi pair should have the same phase variation as pi-pi elastic scattering. This is an extension of Watson's theorem beyond its original derivation, which stated only that the s-dependence of a single resonance should be universal. The prediction of EU is that the deep dip observed in pi-pi elastic scattering close to 1 GeV should also appear in production data. Four sets of data disagree with this prediction. All require different relative magnitudes of sigma and fo(980). That being so, a fresh conjecture is to rewrite the 2-body unitarity relation for production in terms of observed magnitudes. This leads to a prediction different to EU. Central production data from the AFS experiment fit naturally to this hypothesis.
description: 24 pages, 12 figures. To be published in Euro. Phys. J C
Interpretable Detail-Fidelity Attention Network for Single Image Super-Resolution
Creators: name: Huang, Yuanfei
name: Li, Jie
name: Gao, Xinbo
name: Hu, Yanting
name: Lu, Wen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Benefiting from the strong capabilities of deep CNNs for feature representation and nonlinear mapping, deep-learning-based methods have achieved excellent performance in single image super-resolution. However, most existing SR methods depend on the high capacity of networks which is initially designed for visual recognition, and rarely consider the initial intention of super-resolution for detail fidelity. Aiming at pursuing this intention, there are two challenging issues to be solved: (1) learning appropriate operators which is adaptive to the diverse characteristics of smoothes and details; (2) improving the ability of model to preserve the low-frequency smoothes and reconstruct the high-frequency details. To solve them, we propose a purposeful and interpretable detail-fidelity attention network to progressively process these smoothes and details in divide-and-conquer manner, which is a novel and specific prospect of image super-resolution for the purpose on improving the detail fidelity, instead of blindly designing or employing the deep CNNs architectures for merely feature representation in local receptive fields. Particularly, we propose a Hessian filtering for interpretable feature representation which is high-profile for detail inference, a dilated encoder-decoder and a distribution alignment cell to improve the inferred Hessian features in morphological manner and statistical manner respectively. Extensive experiments demonstrate that the proposed methods achieve superior performances over the state-of-the-art methods quantitatively and qualitatively. Code is available at https://github.com/YuanfeiHuang/DeFiAN.
description: 14 pages, submitted to IEEE Transactions, codes are available at https://github.com/YuanfeiHuang/DeFiAN
Total neutrino and antineutrino nuclear cross sections around 1 GeV
Creators: name: Benhar, Omar
name: Meloni, Davide
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate neutrino-nucleus interactions at energies around 1 GeV. In this regime, the main contributions to the cross sections come from quasi-elastic and $Δ$ production processes. Our formalism, based on the Impulse Approximation is well suited to describe both types of interactions. We focus on a series of important nuclear effects in the interaction of electron neutrinos with $^{16}O$, also relevant to future $β$-Beams. Our results show that the Fermi gas model, widely used in data analysis of neutrino experiments, overestimates the total cross sections by as much as 20 %.
description: 30 pages, 15 figures
Spatio-temporal Multi-task Learning for Cardiac MRI Left Ventricle Quantification
Creators: name: Vesal, Sulaiman
name: Gu, Mingxuan
name: Maier, Andreas
name: Ravikumar, Nishant
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Quantitative assessment of cardiac left ventricle (LV) morphology is essential to assess cardiac function and improve the diagnosis of different cardiovascular diseases. In current clinical practice, LV quantification depends on the measurement of myocardial shape indices, which is usually achieved by manual contouring of the endo- and epicardial. However, this process subjected to inter and intra-observer variability, and it is a time-consuming and tedious task. In this paper, we propose a spatio-temporal multi-task learning approach to obtain a complete set of measurements quantifying cardiac LV morphology, regional-wall thickness (RWT), and additionally detecting the cardiac phase cycle (systole and diastole) for a given 3D Cine-magnetic resonance (MR) image sequence. We first segment cardiac LVs using an encoder-decoder network and then introduce a multitask framework to regress 11 LV indices and classify the cardiac phase, as parallel tasks during model optimization. The proposed deep learning model is based on the 3D spatio-temporal convolutions, which extract spatial and temporal features from MR images. We demonstrate the efficacy of the proposed method using cine-MR sequences of 145 subjects and comparing the performance with other state-of-the-art quantification methods. The proposed method obtained high prediction accuracy, with an average mean absolute error (MAE) of 129 $mm^2$, 1.23 $mm$, 1.76 $mm$, Pearson correlation coefficient (PCC) of 96.4%, 87.2%, and 97.5% for LV and myocardium (Myo) cavity regions, 6 RWTs, 3 LV dimensions, and an error rate of 9.0\% for phase classification. The experimental results highlight the robustness of the proposed method, despite varying degrees of cardiac morphology, image appearance, and low contrast in the cardiac MR sequences.
description: Accepted at IEEE Journal of Biomedical and Health Informatics (IEEE-JBHI)
RAPPORTO  ATTIVITA' 1991
Creators: name: INFN Collaboration
Publisher: name: INFN Open Access Repository
Year: 1992

description: Una tappa importante per il futuro dell'attivita' prevalente dei Laboratori Nazionali di Frascati e' stata segnata nel 1991 dal Workshop sulla fisica e gli esperimenti di DAPHNE. In esso sono state ampiamente discusse le tematiche scientifiche e le linee di approccio per la sperimentazione sulla nuova macchina. Si e' altresi' creata l'occasione per gettare le basi della formazione di ampie collaborazioni che proporranno, ed effettueranno, gli esperimenti. Il progetto della macchina e' entrato nella fase ingegneristica dettagliata ed ha rappresentato, da quest'anno e per i prossimi, l'attivita' preponderante della Divisione Acceleratori. Nel corso dell'anno 1991 il progetto LISA ha avuto notevoli avanzamenti: la macchina e' stata assemblata fino alle cavita' superconduttrici e sono iniziate le prove di trasporto fascio. In vista della fine della vita operativa di ADONE, tutte le attivita'sperimentali ad esso collegate sono state impegnate a sfruttare al massimo il tempo fascio. Fenice ha raccolto dati i cui risultati analizzati saranno disponibili nel 1992. JET Target, dopo aver messo a punto il sistema di tagging, ha offerto il fascio per le misure di assorbimento fotonucleare su nuclei leggeri e pesanti all'esperimento Asso. Ladon ha raccolto dati di reazioni fotonucleari sia su Si che su deuterio. Le due facilities su luce di sincrotrone, PULS e PWA, hanno svolto una intensa attivita' ampiamente descritta nel presente rapporto. Citiamo solo, per la novita' dell'argomento, i primi tentativi di applicazione della radiazione di sincrotrone in campo radiologico. Concludiamo sulle attivita' locali ricordando che sono iniziati i lavori per l'istallazione dell'antenna gravitazionale Nautilus. Per quanto riguarda gli esperimenti fuori dei Laboratori, Aleph, CDF, Flatev e Macro hanno continuato i run di presa dati e le analisi tese al raffinamento dei risultati raccolti, mentre SDL ha effettuato run preliminari. Tutti, o quasi, i gruppi sono stati impegnati in fasi di costruzione o di aggiornamento di parti degli apparati sperimentali.
Μελέτη του μηχανισμού δράσης του παράγοντα VIIα στη διδαδικασία πήξης του αίματος.Επίδραση του ιστικού παράγονται και των αιμοπεταλίων
Creators: name: Τιλκιρίδου, Σοφία Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Ανασυνδυασμένος παράγοντας VIIα
Μοντέλο καταρράκτη πήξης
Κυτταρικό μοντέλο πήξης
Αιμόσταση
Αιμοπετάλια
θρόμβος αίματος
Novoseven, rviia
Cascade model of coagulation
Cell-based model of coagulation
Haemostasis
Platelets
Thrombus

description: Τα πειραματικά αποτελέσματα της παρούσας εργασίας βασίστηκαν κυρίως στην τεχνική Western Blotting για την παρακολούθηση της κινητικής παραγωγής θρομβίνης και της χρωματομετρικής μεθόδου για την παραγωγή του Χα. Παρατηρείται ότι η περίσσεια Vlla ενισχύει την παραγωγή θρομβίνης, βελτιώνοντας το προφίλ ατόμου με αιμορροφιλία και η δράση του είναι TF-εξαρτώμενη. Μπορούμε, επίσης να καταλήξοθμε στο συμπέρασμα ότι η περίσσεια Vlla μπορεί να δράσει τόσο πάνω σε αιμοπετάλια, όσο και σε κύτταρα πηγές TF οδηγώντας σε μαζική παραγωγή Χα. Καταλήγουμε επίσης στην εξής σειρά σπουδαιότητας των παραγόντων : TP+PL+Vlla > TP+Vlla>PL+Vlla>Vlla. Διαπιστώνεται επίσης ότι η περίσσεια Vlla μπορεί να αποκαταστήσει την ανασταλτική δράση τόσο της APC όσο και του συνδυασμού APC-APS για συγκεντρώσεις μέχρι 3 φορές πάνω από το φυσιολογικό. Γενικότερα διαπιστώνεται ότι η περίσσεια Vlla παρουσιάζεται να δρά ως "σωσίβια λέμβος" για τον οργανισμό, αναπληρώνοντας τυχόν ελλείψεις του (καταστάσεις dix, PPP)
description: In this review was made an effort to study the thrombin production in haemophilic and physiological samples with Western Blotting technique. Als, we studied the production of factor Χα withy chromatometric assays. There was an effort to study the mechanism of actio of rhVlla and the effect of tissue factor and platelets
Effective resistance of random trees
Creators: name: Addario-Berry, Louigi
name: Broutin, Nicolas
name: Lugosi, Gábor
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J45 (Primary) 31C20 (Secondary)

description: We investigate the effective resistance $R_n$ and conductance $C_n$ between the root and leaves of a binary tree of height $n$. In this electrical network, the resistance of each edge $e$ at distance $d$ from the root is defined by $r_e=2^dX_e$ where the $X_e$ are i.i.d. positive random variables bounded away from zero and infinity. It is shown that $\mathbf{E}R_n=n\mathbf{E}X_e-(\operatorname {\mathbf{Var}}(X_e)/\mathbf{E}X_e)\ln n+O(1)$ and $\operatorname {\mathbf{Var}}(R_n)=O(1)$. Moreover, we establish sub-Gaussian tail bounds for $R_n$. We also discuss some possible extensions to supercritical Galton--Watson trees.
description: Published in at http://dx.doi.org/10.1214/08-AAP572 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)