cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Breuer, Johannes, Der Mythos in den Oden des Horaz. Praetexte, Formen, Funktionen
Creators: name: Wissemann, Michael
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Breuer, Johannes, Der Mythos in den Oden des Horaz. Praetexte, Formen, Funktionen, Göttingen: Vandenhoek & Ruprecht (Hypomnemata Bd. 178) 2008, 444 S. (ISBN 078-3-525-25285-7).
description: Forum Classicum, Nr. 4 (2009): Forum Classicum
Effect of anomalously high oscillations of velocity of longitudinal ultrasound in high pure type I superconductor at weak external magnetic field
Creators: name: Shepelev, Anatoly G.
name: Ledenyov, Oleg P.
name: Filimonov, Genady D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We have experimentally observed, for the first time, the very strong oscillations of the velocity of the longitudinal ultrasound attenuation in a normal metal state of the high pure type I superconductor at the magnetic field H at the low temperature of 0.4 K. The oscillations appear, following the change of either: the magnitude of the magnetic field H or the orientation of the magnetic field H in the plane: the magnetic field H perpendicular to the wave vector k.
description: 3 pages, 3 figures, http://www.jetpletters.ac.ru/ps/1522/article_23281.shtml
Additional file 1 of Impact of weekday and weekend mobility and public policies on COVID-19 incidence and deaths across 76 large municipalities in Colombia: statistical analysis and simulation
Creators: name: Jason, Jamie S.
name: Bowser, Diana M.
name: Harker Roa, Arturo
name: Contreras Ceballos, Diana C.
name: Muñoz, Santiago
name: Sombrio, Anna G.
name: Shepard, Donald S.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1.
Purification and identification of surface active amphiphilic candidates produced by Geotrichum candidum MK880487 possessing antifungal property
Creators: name: Eldin, Ahmed Mohy
name: Kamel, Zeinat
name: Hossam, Nermeen
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: The present study was held to optimize production, purify and identify biosurfactant from yeast strain Geotrichum candidum MK880487. Biosurfactant production was done on modified Hua medium and optimized in shake-flask method. Soybean oil (8%, v/v), KNO3 (0.75 g L−1) and yeast extract (0.3 g L−1) were the best carbon and nitrogen sources, respectively, with C:N ratio of 200:1, pH 8 at 30 °C for 168 h. Production scale-up was achieved on 2.5 L bioreactor as batch method. The resulting crude biosurfactant extract with yield of 1.75 g L−1 was purified by reversed phase column preparative HPLC. The resulting most active fraction F47 significantly reduced water surface tension by 51.92%. Chemical characterization using TLC, GC-MS, FTIR and LC-MS/MS methods revealed the biosurfactant to contain mainly glycolipid structure existing as mixture of Icariside F2, Cardenolide Di-Hexopyranoside and Di Galactosyl Di Acyl Glycerol glycolipid that collectively showed potential antifungal activity toward Macrophomina phaseolina. Process flow scheme of this study showing the BS production scale up, separation, purification, identification and application as antifungal agent.
title: Ανάπτυξη πολυκριτήριας μεθοδολογίας μέτρησης της ικανοποίησης των χρηστών συστημάτων υποστήριξης αποφάσεων
Creators: name: Λυράκης Ιωάννης Σ.
Publisher: name: Technical University of Crete
Year: 2001

description: φ. 1: Εισαγωγή -- Κεφ. 2: Συστήματα υποστήριξης αποφάσεων (Σ.Υ.Α.) & έμπειρα συστήματα (Ε.Σ.) -- Κεφ. 3: Αξιολόγηση -- Κεφ. 4: Τεχνική και εμπειρική αξιολόγηση -- Κεφ. 5: Υποκειμενική αξιολόγηση -- Κεφ. 6: Πολυκριτήρια μεθοδολογία μέτρησης της ικανοποίησης των χρηστών συστημάτων υποστήριξης απόφάσεων (Σ.Υ.Α.)
Aristoteles - Poetik: übersetzt und erläutert von Arbogast Schmitt
Creators: name: Schmude, Michael P.
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Aristoteles - Poetik: übersetzt und erläutert von Arbogast Schmitt. Akademie-Verlag Berlin 2008 [Werke in deutscher Übersetzung, Bd. 5], 789 S. (ISBN 978-3-05-004430-9).
description: Forum Classicum, Nr. 1 (2010): Forum Classicum
A pure Dirac's method for Yang-Mills expressed as a constrained BF-like theory
Creators: name: Escalante, Alberto
name: Berra, Jasel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A pure Dirac's method of Yang-Mills expressed as a constrained BF-like theory is performed. In this paper we study an action principle composed by the coupling of two topological BF-like theories, which at the Lagrangian level reproduces Yang-Mills equations. By a pure Dirac's method we mean that we consider all the variables that occur in the Lagrangian density as dynamical variables and not only those ones that involve temporal derivatives. The analysis in the complete phase space enable us to calculate the extended Hamiltonian, the extended action, the constraint algebra, the gauge transformations and then we carry out the counting of degrees of freedom. We show that the constrained BF-like theory correspond at classical level to Yang-Mills theory. From the results obtained, we discuss briefly the quantization of the theory. In addition we compare our results with alternatives models that have been reported in the literature
title: Η επίδραση των ξένων τραπεζών στα εγχώρια τραπεζικά συστήματα
title: The impact of foreign banks on domestic banking systems
Creators: name: Σφακιωτακη Ιωαννα
Publisher: name: Technical University of Crete
Year: 2018

description: Τις τελευταίες δεκαετίες το διεθνές εμπόριο αγαθών και χρηματοπιστωτικών υπηρεσιών έχει επεκταθεί σημαντικά, καθώς όλο και περισσότερα τραπεζικά ιδρύματα έχουν γίνει πλέον διεθνή. Πιο συγκεκριμένα, οι τράπεζες έχουν επεκταθεί ιδρύοντας θυγατρικές και υποκαταστήματα στο εξωτερικό ή αναλαμβάνοντας την ίδρυση ξένων τραπεζών. Κύριο ρόλο ώθησης στη διεθνοποίηση του τραπεζικού τομέα, κατέχει η απελευθέρωση των χρηματοπιστωτικών αγορών σε όλο τον κόσμο. Από το 1995 και έπειτα, τόσο οι αναπτυσσόμενες όσο και οι αναπτυγμένες χώρες επιτρέπουν όλο και περισσότερο την είσοδο ξένων τραπεζών. Στην παρούσα εργασία, αρχικά θα γίνει μια ιστορική αναδρομή στην διεθνή τραπεζική και στην επέκταση των εγχώριων τραπεζών σε ξένες αγορές. Επιπλέον, θα αναλυθούν οι λόγοι για τους οποίους εισέρχονται οι ξένες τράπεζες στις εγχώριες αγορές, αλλά και ποιες είναι οι συνέπειες από την είσοδό τους. Ακόμη, θα πραγματοποιηθεί μια εμπειρική μελέτη με τη χρήση οικονομετρικών υποδειγμάτων. Πιο συγκεκριμένα, θα εξεταστεί η επίδραση του αριθμού και του μεριδίου αγοράς των ξένων τραπεζών σε διάφορες πτυχές της οικονομίας και του χρηματοπιστωτικού συστήματος, όπως τη χρήση πιστωτικών καρτών, την ανάπτυξη της αγοράς επιχειρηματικών κεφαλαίων, αλλά και την ύπαρξη οικονομικά προσιτών χρηματοοικονομικών υπηρεσιών. Το δείγμα θα αποτελείται από ένα μεγάλο αριθμό αναπτυγμένων και αναπτυσσόμενων χωρών και τα στοιχεία θα αφορούν την τελευταία περίπου δεκαετία.
Two photon processes at PETRA
Creators: name: Wagner, W.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 1980
Subjects: subject: 530
subject: REVIEW: EXPERIMENTAL RESULTS
subject: ELECTRON POSITRON: COLLIDING BEAMS
subject: COLLIDING BEAMS: ELECTRON POSITRON
subject: ELECTRON POSITRON: INELASTIC SCATTERING
subject: INELASTIC SCATTERING: ELECTRON POSITRON
subject: EXCHANGE: TWO-PHOTON
subject: TWO-PHOTON: EXCHANGE
subject: PHOTON PHOTON: INTERACTION
subject: INTERACTION: PHOTON PHOTON
subject: F(1270): ELECTROPRODUCTION
subject: ELECTROPRODUCTION: F(1270)
subject: F(1270): ELECTROMAGNETIC DECAY
subject: ELECTROMAGNETIC DECAY: F(1270)
subject: F(1270): DECAY WIDTH
subject: DECAY WIDTH: F(1270)
subject: PHOTON ELECTRON: DEEP INELASTIC SCATTERING
subject: DEEP INELASTIC SCATTERING: PHOTON ELECTRON
subject: PHOTON: STRUCTURE FUNCTION
subject: HADRON: MULTIPLE PRODUCTION
subject: MULTIPLE PRODUCTION: HADRON
subject: MASS SPECTRUM: (MUON+ MUON-)
subject: (MUON+ MUON-): MASS SPECTRUM
subject: MASS SPECTRUM: (POSITRON ELECTRON)
subject: (POSITRON ELECTRON): MASS SPECTRUM
subject: CHANNEL CROSS SECTION: ENERGY DEPENDENCE
subject: CHANNEL CROSS SECTION: MOMENTUM TRANSFER
subject: QUANTUM ELECTRODYNAMICS: VALIDITY TEST
subject: TRANSVERSE MOMENTUM: HIGH
subject: JET: ELECTROPRODUCTION
subject: ELECTROPRODUCTION: JET
subject: SPECTRUM: TRANSVERSE MOMENTUM
subject: TRANSVERSE MOMENTUM: SPECTRUM
subject: STRUCTURE FUNCTION: X-DEPENDENCE
subject: MODEL: HARD SCATTERING
subject: HARD SCATTERING: MODEL
subject: MODEL: VECTOR DOMINANCE
subject: DESY PETRA STOR
subject: ELECTRON POSITRON --> 2POSITRON 2ELECTRON
subject: ELECTRON POSITRON --> MUON+ MUON- POSITRON ELECTRON
subject: PHOTON PHOTON --> QUARK ANTIQUARK
subject: F(1270) --> 2PHOTON
subject: 31 GEV-CMS
subject: Photon scattering
subject: Chemical reaction cross sections
subject: Inelastic scattering
subject: Multiphoton processes
subject: Photons

description: 155841 (1980).
description: The analysis of two photon physics at the e+e− storage ring PETRA is reviewed. Higher order QED processes e+e−→e+e−e+e−(e+e−μ+μ−) have been measured in good agreement with the QED calculations. The production of the f0 resonance has been invstigated and the radiative width has been determined. The total cross section σ(Q2,W) of the inelastic electron photon scattering has been studied in some detail. Evidence for the production of large PT jets in the reaction γγ→qq̄ is reported and a first measurement of the photon structure function in deep inelastic eγ scattering is discussed.
What can CORPES XXI tell us about the thematic distribution of Anglicisms in the Spanish press?
Creators: name: Núñez Nogueroles, Eugenia Esperanza
Publisher: name: Zenodo
Year: 2018
Subjects: Anglicisms
Spanish press
Spanish language
English borrowings
loanword
CORPES XXI
corpus-based studies
thematic distribution

description: Conference presentation. 
X International Conference on Corpus Linguistics (CILC), Cáceres, Spain, May 9-11, 2018.
GLAD* MEETING TALKS. 
*Global Anglicism Database Network.
Implementation framework of measures of distinctiveness
Creators: name: Du, Keli
name: Dudar, Julia
name: Rok, Cora
name: Schöch, Christof
Publisher: name: Zenodo
Year: 2021
Subjects: Computational Literary Studies
measure of distinctiveness
Implementation framework
SPP 2207

description: Statistical measures of distinctiveness allow researchers to extract features (e.g. words or parts-of-speech) that are characteristic or "distinctive" for a given group of texts compared to another group of texts. In order to reach a deeper understanding of measures of distinctiveness, we first analyze a significant range of existing measures of distinctiveness to determine and compare their statistical properties and integrate them into this joint conceptual model. DFG Schwerpunktprogramm SPP 2207 "Computational Literary Studies" Online: https://gepris.dfg.de/gepris/projekt/402743989 https://dfg-spp-cls.github.io/ Teilprojekt: "Zeta und Konsorten. Distinktivitätsmaße für die Digitalen Literaturwissenschaften" Online: https://gepris.dfg.de/gepris/projekt/424211690 https://dfg-spp-cls.github.io/projects_en/2020/01/24/TP-Zeta_and_Company/ https://zeta-project.eu/de/
Additional file 1 of Elucidation of the mechanisms underlying tumor aggravation by the activation of stress-related neurons in the paraventricular nucleus of the hypothalamus
Creators: name: Yoshida, Sara
name: Hamada, Yusuke
name: Narita, Michiko
name: Sato, Daisuke
name: Tanaka, Kenichi
name: Mori, Tomohisa
name: Tezuka, Hiroyuki
name: Suda, Yukari
name: Tamura, Hideki
name: Aoki, Kazunori
name: Kuzumaki, Naoko
name: Narita, Minoru
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Figure S1. Effects of the activation of CRHPVN neurons on spleen-derived lymphocytes. (A, B) Representative flow cytometric dot plots (A-i, B-i) and quantitative analyses of CD4+ T cells (A-ii), CD8+ T cells (A-iii), NK cells (B-ii) and NKT cells (B-iii) derived from spleen of tumor-bearing WT/hM3Dq or CRH-Cre/hM3Dq mice. Each point represents the mean ± S.E.M. (n = 16). (C) Quantitative PCR analysis for granzyme B (C-i), perforin (C-ii), and IFN-γ (C-iii) mRNA expression in NK cells derived from spleen of WT/hM3Dq or CRH-Cre/hM3Dq mice. Each point represents the mean ± S.E.M. Unpaired t-test: *p < 0.05 vs. WT/hM3Dq mice (n = 16).
Bericht zur Lage des altsprachlichen Unterrichts in der Bundesrepublik Deutschland (vorgelegt auf der Vertreterversammlung am 6. Februar 2011 in Göttingen). Berichtsjahr 2009/2010
Creators: name: Meurer, Horst-Dieter
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 2 (2011): Forum Classicum
title: Νεύρο-ασαφές μοντέλο πρόβλεψης πωλήσεων ελαιόλαδου (ANFIS)
title: Olive oil sales forecasting by a neuro-fuzzy system (ANFIS)
Creators: name: Χαιρετακης Εμμανουηλ
Publisher: name: Technical University of Crete
Year: 2018

description: Η σημερινή παγκόσμια οικονομία λειτουργεί με διαφορετικούς κανόνες από ότι λειτουργούσε πριν από δεκαπέντε και τριάντα χρόνια. Οι εξελίξεις είναι συνεχόμενες και όλο και πιο σημαντικές. Μόνο οι ανταγωνιστικές επιχειρήσεις καταφέρνουν να επιβιώνουν σε αυτό το περιβάλλον. Ένα χαρακτηριστικό των εταιρειών αυτών είναι η ικανότητα πρόβλεψης και προσαρμογής τους στα νέα δεδομένα που παρουσιάζονται. Εδώ εμφανίζονται και τα μοντέλα πρόβλεψης που αποτελούν πλέον αναπόσπαστά εργαλεία για τις διοικήσεις πάνω στο σχεδιασμό μελλοντικών πολιτικών για τις εταιρείες.
Στην εργασία αυτή το μοντέλο πρόβλεψης θα είναι ένα νεύρο-ασαφές σύστημα το οποίο θα προβλέπει τις πωλήσεις ελαιόλαδου. Θα αξιοποιήσουμε πραγματικά δεδομένα που συλλέξαμε από μια τοπική επιχείρηση που αντικείμενο της είναι η τυποποίηση και εμπορία ελαιόλαδου . Θα προσπαθήσουμε να φτιάξουμε ένα μοντέλο πρόβλεψης πωλήσεων για να μπορεί να χρησιμοποιήσει η διοίκηση της εταιρείας για να βελτιώσει τις αποφάσεις της. Να ανταποδώσουμε την εμπιστοσύνη που έδειξαν παρέχοντας μας τα δεδομένα. Με αυτό το τρόπο ίσως καταφέρουμε να φέρουμε πιο κοντά την ακαδημαϊκή πλευρά του Πολυτεχνείο Κρήτης με τον επιχειρηματικό κόσμο των Χανίων.
Additional file 2 of Elucidation of the mechanisms underlying tumor aggravation by the activation of stress-related neurons in the paraventricular nucleus of the hypothalamus
Creators: name: Yoshida, Sara
name: Hamada, Yusuke
name: Narita, Michiko
name: Sato, Daisuke
name: Tanaka, Kenichi
name: Mori, Tomohisa
name: Tezuka, Hiroyuki
name: Suda, Yukari
name: Tamura, Hideki
name: Aoki, Kazunori
name: Kuzumaki, Naoko
name: Narita, Minoru
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 2: Table S1. Primers sequences used for real-time qPCR.
Extending valuations to formal completions
Creators: name: Govantes, F. J. Herrera
name: Acosta, M. A. Olalla
name: Spivakovsky, M.
name: Teissier, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: This paper is an extended version of the talk given by Miguel Olalla at the International Conference on Valuation Theory in El Escorial in July 2011. Its purpose is to provide an introduction to our joint paper "Extending a valuation centered in a local domain to the formal completion" (Proc. London Math. Soc. (2012) 105 (3), 571-621) without grinding through all of its technical details.
description: Talk given at the International Conference on Valuation Theory in El Escorial in July 2011
Multiple fluxon analogues and dark solitons in linearly coupled Bose-Einstein condensates
Creators: name: Qadir, M. I.
name: Susanto, H.
name: Matthews, P. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Two effectively one-dimensional parallel coupled Bose-Einstein condensates in the presence of external potentials are studied. The system is modelled by linearly coupled Gross-Pitaevskii equations. In particular, the interactions of grey-soliton-like solutions representing analogues of superconducting Josephson fluxons as well as coupled dark solitons are discussed. A theoretical approximation based on variational formulations to calculate the oscillation frequency of the grey-soliton-like solution is derived and a qualitatively good agreement is obtained.
description: 26 pages, 17 figures. Appeared in "Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations", B.A. Malomed, ed. (Springer, Berlin, 2013)
title: Postcolonial theory and literary practice in Ireland, 1980-2015: Roddy Doyle and Anne Enright
Creators: name: Genoveffa, Giambona
Publisher: name: University of Reading
Year: 2023

description: This thesis analyses depictions of nationhood and identity in some contemporary Irish fictions through a postcolonial lens. In particular, the thesis focuses on two writers, Roddy Doyle and Anne Enright, and a specific period, namely the beginning of the 1980s, when postcolonial theory first started to develop in Ireland, and 2015, when Enright’s novel The Green Road was published. Fiction, and literature more in general, is affected by socio-historical events, and in turn effects potential for social change and transformation. This means that revising Irish identity is also, partly, revising the historical, political and social events that contributed to its construction, and now to its re-invention. This history is referred to by my chosen writers, and their novels engage with historical events and what they mean to the present, both national and individual. I have explored the joint phenomenon of changes in Irish society and the rise of postcolonial theory in the Irish academy, focusing on the relationship between narrative and its context, on definitions and perceptions of Irishness, and on disjointed narrative as a projection of displacement and uprootedness as seen against a postcolonial backdrop, both in terms of the colonial past and post-Independence legacies. I have examined the specific ‘version’ of postcolonial theory which has emerged, partly as a reflection of this inheritance. I have also analysed how the contemporary Irish novel reflects issues of identity that have been characterised through Ireland’s colonial legacy and postcolonial situation. The postcolonial approach of the thesis has argued the importance of considering the subaltern narrative. Additionally, it has explored characterisations that link back to ideas of double colonisation. This formed the basis for assessing to what extent and in what form the novels selected for discussion, which all refuse the linear narratives of both colonial and early versions of nationalism, have enabled or foregrounded a space in which to make subaltern and marginalised voices audible; and to explore and challenge subaltern issues of disempowerment and oppression, with specific attention to aspects of class and gender.
title: Review of the technical and environmental capabilities of Geothermal Systems through Life Cycle Assessment (LCA)
Creators: name: Παππας Αθανασιος
Publisher: name: Technical University of Crete
Year: 2018

description: In an era of increased environmental awareness, many countries turn to renewable energy sources for large scale applications (e.g. electricity generation power plants) or small scale installations (e.g. buildings’ heating and cooling). In this context it makes sense that there is an increasing interest for technologies that depend on renewable energy, such as geothermal systems, and their analytic study through advanced tools such as Life Cycle Assessment (LCA). In this study, we make a detailed review of academic sources that have used LCA in various applications of geothermal energy, as well as the technical and environmental capabilities this technology has to offer.
Nutzungen, Strukturen, Verkehr: Beitrag zu Steierwald, G., H.-D. Künne und W. Vogt (Hrsg.) (2004) Stadtverkehrsplanung, Springer, Heidelberg
Creators: name: Axhausen, Kay W.
name: Frick, M.
Publisher: name: ETH Zurich
Year: 2004
Subjects: TRAVELLER BEHAVIOUR (TRANSPORTATION AND TRAFFIC)
Traffic generation
VERKEHRSMITTELWAHL (WIRTSCHAFTSWISSENSCHAFTEN)
Destination choice
GERMANY (CENTRAL EUROPE). FEDERAL REPUBLIC OF GERMANY
Switzerland
Great Britain
CHOICE OF MEANS OF TRANSPORTATION (ECONOMICS)
SWITZERLAND (CENTRAL EUROPE). SWISS CONFEDERATION
UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND (WESTERN EUROPE)
VERKEHRSVERHALTEN DER BEVÖLKERUNG (VERKEHR UND TRANSPORT)
Grossbritannien
Schweiz
Alltag
Mode choice
VEREINIGTES KÖNIGREICH GROSSBRITANNIEN UND NORDIRLAND (WESTEUROPA)
URBAN TRANSPORT PLANNING (TRANSPORTATION AND TRAFFIC)
SPATIAL MOBILITY (GEOGRAPHY)
Movement
Verkehrsverhalten
RÄUMLICHE MOBILITÄT (GEOGRAFIE)
Verkehrsleistung
STADTVERKEHR + STADTVERKEHRSPLANUNG (VERKEHR UND TRANSPORT)
Verkehrserzeugung
DEUTSCHLAND (MITTELEUROPA). BUNDESREPUBLIK DEUTSCHLAND
SCHWEIZ (MITTELEUROPA). SCHWEIZERISCHE EIDGENOSSENSCHAFT
Deutschland
Verkehrsmittelwahl
Germany
Everyday travel behaviour
Definition
info:eu-repo/classification/ddc/380
Commerce, communications, transport

description: Arbeitsberichte Verkehrs- und Raumplanung, 205
title: Σχεδιομελέτη και κατασκευή καλουπιού έγχυσης με τη βοήθεια του λογισμικού CAD/CAM NX
Creators: name: Θεοδοσιου Δημητριος
Publisher: name: Technical University of Crete
Year: 2018

description: Στην παρούσα διπλωματική εργασία θα μελετηθούν τα καλούπια έγχυσης πλαστικών καθώς και η χρήση λογισμικού για τον κύκλο της σχεδίασης, δοκιμής, αναθεώρησης και κατασκευής.
Η σχεδίαση του τελικού τεμαχίου θα γίνει στο περιβάλλον CAD του λογισμικού NX.
Η συναρμολόγηση του καλουπιού θα υλοποιηθεί σε ξεχωριστό και εξειδικευμένο πακέτο για καλούπια του NX, το οποίο ονομάζεται Mold Wizard. Επίσης θα παραχθούν οι απαραίτητοι κώδικες μηχανής (g-codes) από το περιβάλλον CAM.
Τέλος θα παραχθεί αντίγραφο του καλουπιού σε κλίμακα 1:2.
title: Προσδιορισμός τροχιών ελάχιστης τραχύτητας σε φραιζάρισμα πολυαξονικών επιφανειών
title: Determination of tool paths leading to minimal surface roughness in free form surface milling
Creators: name: Χριστοδουλοπουλος Αντωνιος
Publisher: name: Technical University of Crete
Year: 2018

description: Το αντικείμενο της προτεινόμενης μεταπτυχιακής εργασίας αφορά τις κατεργασίες κο-πής με αφαίρεση υλικού με φραιζάρισμα με κονδυλοφόρα εργαλεία σφαιρικής απόλη-ξης, οι οποίες αποτελούν μία από τις πιο ευρέως χρησιμοποιούμενες μηχανουργικές κα-τεργασίες αποπεράτωσης στη βιομηχανία. Για τη βέλτιστη επιλογή των συνθηκών κα-τεργασίας, ιδιαίτερα σε κοπές πολυαξονικών επιφανειών με περιορισμένων δυνατοτή-των ψηφιακά κέντρα κατεργασίας, στην παρούσα εργασία αναπτύσσεται μια μεθοδολο-γία προσδιορισμού βέλτιστων τροχιών του κοπτικού εργαλείου λαμβάνοντας υπόψη τη σχετική κλίση του εργαλείου ως προς την κατεργασμένη επιφάνεια σε κάθε θέση της. Η επιλογή των συνθηκών γίνεται μέσα από βάση τεχνολογικών πληροφοριών που ανα-πτύχθηκε στα πλαίσια της εργασίας αυτής και περιλαμβάνει τις προκύπτουσες δυνάμεις κοπής και τραχύτητες επιφανειών για μεγάλη ποικιλία συνθηκών κατεργασίας.
title: Αξιολόγηση επενδύσεων εκμετάλλευσης αιολικού δυναμικού
Creators: name: Παναγιωτόπουλος Γεώργιος
name: Ψειρίδης Αθανάσιος
Publisher: name: Technical University of Crete
Year: 1991

description: Μη διαθέσιμο
Die Landesdenkmalpflege
Creators: name: Redaktion, Die
Publisher: name: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege
Year: 2017

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 46, Nr. 2 (2017)
Preparation of Non-equilibrium Nuclear Spin States in Double Quantum Dots
Creators: name: Gullans, M.
name: Krich, J. J.
name: Taylor, J. M.
name: Halperin, B. I.
name: Lukin, M. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically study the dynamic polarization of lattice nuclear spins in GaAs double quantum dots containing two electrons. In our prior work [Phys. Rev. Lett. 104, 226807 (2010)] we identified three regimes of long-term dynamics, including the build up of a large difference in the Overhauser fields across the dots, the saturation of the nuclear polarization process associated with formation of so-called "dark states," and the elimination of the difference field. In particular, when the dots are different sizes we found that the Overhauser field becomes larger in the smaller dot. Here we present a detailed theoretical analysis of these problems including a model of the polarization dynamics and the development of a new numerical method to efficiently simulate semiclassical central-spin problems. When nuclear spin noise is included, the results agree with our prior work indicating that large difference fields and dark states are stable configurations, while the elimination of the difference field is unstable; however, in the absence of noise we find all three steady states are achieved depending on parameters. These results are in good agreement with dynamic nuclear polarization experiments in double quantum dots.
description: 11 pages main text, 8 figures, V2: minor changes, V3: minor changes
Verkehr und Erreichbarkeit von Stadtland Schweiz im Standortwettbewerb
Creators: name: Keller, Peter
name: Steinmetz, Remo
Publisher: name: ETH Zurich
Year: 2003
Subjects: subject: Verkehr
subject: Standortwettbewerb
subject: Stadtland
subject: COMPETITIVENESS
subject: IVT
subject: Schweiz
subject: TRANSPORT PLANNING (TRANSPORTATION AND TRAFFIC)
subject: ETH
subject: Spatial development
subject: Settlement
subject: ERREICHBARKEIT (VERKEHR UND TRANSPORT)
subject: Switzerland
subject: Accessibility
subject: LOCATION POLICY (ECONOMIC POLICY)
subject: Competition of location
subject: SWITZERLAND (CENTRAL EUROPE). SWISS CONFEDERATION
subject: SCHWEIZ (MITTELEUROPA). SCHWEIZERISCHE EIDGENOSSENSCHAFT
subject: Transport
subject: WETTBEWERBSFÄHIGKEIT
subject: Erreichbarkeit
subject: VERKEHRSPLANUNG (VERKEHR UND TRANSPORT)
subject: Raum
subject: STANDORTPOLITIK (WIRTSCHAFTSPOLITIK)
subject: Siedlung
subject: ACCESSIBILITY (TRANSPORTATION AND TRAFFIC)
subject: info:eu-repo/classification/ddc/624
subject: info:eu-repo/classification/ddc/380
subject: Civil engineering
subject: FOS: Civil engineering
subject: Commerce, communications, transport

description: Arbeitsberichte Verkehrs- und Raumplanung, 175
Unlocking Academic Excellence- Evaluating the Impact of Learner-Centered Teaching on BSED GEN SCI Students of Baguio Central University
Creators: name: SEBULLEN, MICHAEL
name: MALIT, LORELIE
Publisher: name: figshare
Year: 2023
Subjects: Science, technology and engineering curriculum and pedagogy

description: This quasi-experimental study examines the effectiveness of a learner-centered approach among BSED Gen-Sci students at Baguio Central University (BCU). The focus is on evaluating student engagement and understanding using qualitative method. The research focuses on the assessment of the students’ behavior in the classroom and their level of engagement and understanding. Results from both sets of tests were compared, analyzed, and treated with 2-group tests, regression, and time-series analyses which have their own assumptions, data requirements, strengths, and limitations. Standardized tests were used to collect data, and the findings revealed that the learner-centered approach was effective in engaging the students and that the techniques used by the teachers included group collaboration, unlocking of unfamiliar words, lecture methods, answering of preliminary activities/exercises, problem solving, and giving reading materials and reading comprehension. The results of a quasi-experimental study suggest that the use of learner-centered instructional materials, such as realia, science models and dioramas, localized videos, and indigenous sources, is an effective method for addressing the needs of diverse BSED Gen-Sci students.
Prospective Prediction of Self- and Caregiver-Reported Initiation of Non-suicidal Self-injury in Adolescents with Major Depressive Disorder
Creators: name: Yanwen Yu
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Clinical Psychology
subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Supplementary material for this project.
A joint analysis of the Drake equation and the Fermi paradox
Creators: name: Prantzos, Nikos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: I propose a unified framework for a joint analysis of the Drake equation and the Fermi paradox, which enables a simultaneous, quantitative study of both of them. The analysis is based on a simplified form of the Drake equation and on a fairly simple scheme for the colonization of the Milky Way. It appears that for sufficiently long-lived civilizations, colonization of the Galaxy is the only reasonable option to gain knowledge about other life forms. This argument allows one to define a region in the parameter space of the Drake equation where the Fermi paradox definitely holds (Strong Fermi paradox).
description: 17 pages, 6 figures, published in International Journal of Astrobiology (Special Issue on the 50 years of the Drake Equation, Eds. F. Raulin and J. P. Rospar). Matches the published version, one figure (Fig. 2) replaced, typos corrected, references added
title: Η σύνδεση της παραγωγής με τα ΑΕΙ. Έρευνα αγοράς και εφαρμογή μεθόδων ανάλυσης δεδομένων
Creators: name: Καρκαντζέλης Αναστάσιος
Publisher: name: Technical University of Crete
Year: 1991

description: Μη διαθέσιμο
Fully integrated InGaAs/InP single-photon detector module with gigahertz sine wave gating
Creators: name: Liang, Xiao-Lei
name: Liu, Jian-Hong
name: Wang, Quan
name: Du, De-Bing
name: Ma, Jian
name: Jin, Ge
name: Chen, Zeng-Bing
name: Zhang, Jun
name: Pan, Jian-Wei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: InGaAs/InP single-photon avalanche diodes (SPADs) working in the regime of GHz clock rates are crucial components for the high-speed quantum key distribution (QKD). We have developed for the first time a compact, stable and user-friendly tabletop InGaAs/InP single-photon detector system operating at a 1.25 GHz gate rate that fully integrates functions for controlling and optimizing SPAD performance. We characterize the key parameters of the detector system and test the long-term stability of the system for continuous operation of 75 hours. The detector system can substantially enhance QKD performance and our present work paves the way for practical high-speed QKD applications.
description: 11 pages, 6 figures. Accepted for publication in Review of Scientific Instruments
title: Στατιστική ανάλυση των 35 εμπορικών επιχειρήσεων με τα μεγαλύτερακαθαρά κέρδη για την περίοδο 1982-1987
Creators: name: Τσαρδούλια Αικατερίνη
Publisher: name: Technical University of Crete
Year: 1992

description: Μη διαθέσιμο
Überprüfung von Prognoseansätzen im Personenverkehr: Ergebnisse einer Vorher-/Nachher Untersuchung
Creators: name: Vrtic, Milenko
name: Axhausen, Kay W.
Publisher: name: ETH Zurich
Year: 2003
Subjects: subject: Personenverkehr
subject: Schweiz
subject: PASSENGER TRANSPORT (TRANSPORTATION AND TRAFFIC)
subject: VERKEHRSPROGNOSEN (VERKEHR UND TRANSPORT)
subject: VERKEHRSMITTELWAHL (WIRTSCHAFTSWISSENSCHAFTEN)
subject: TRAFFIC FORECASTINGS (TRANSPORTATION AND TRAFFIC)
subject: PERSONENVERKEHR (VERKEHR UND TRANSPORT)
subject: Stated Preference
subject: VERKEHRSANALYSE (VERKEHR UND TRANSPORT)
subject: Routenwahl
subject: CHOICE OF MEANS OF TRANSPORTATION (ECONOMICS)
subject: SWITZERLAND (CENTRAL EUROPE). SWISS CONFEDERATION
subject: SCHWEIZ (MITTELEUROPA). SCHWEIZERISCHE EIDGENOSSENSCHAFT
subject: Verkehrsprognosen
subject: TRAFFIC ANALYSIS (TRANSPORTATION AND TRAFFIC)
subject: Verkehrsmittelwahl
subject: Neigezug ICN
subject: info:eu-repo/classification/ddc/624
subject: info:eu-repo/classification/ddc/380
subject: Civil engineering
subject: FOS: Civil engineering
subject: Commerce, communications, transport

description: Arbeitsberichte Verkehrs- und Raumplanung, 153
MOESM2 of New strategy to elucidate the positive effects of extractable lignin on enzymatic hydrolysis by quartz crystal microbalance with dissipation
Creators: name: Lai, Chenhuan
name: Yang, Bo
name: Lin, Zihe
name: Jia, Yuan
name: Huang, Caoxing
name: Li, Xin
name: Song, Xiangyang
name: Yong, Qiang
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Computational Biology

description: Additional file 2: Figure S1. SEM images of (a) EP25, (b) EP25-EW, (c) EP50, and (d) EP50-EW.
Manipulation of Giant Faraday Rotation in Graphene Metasurfaces
Creators: name: Fallahi, Arya
name: Perruisseau-Carrier, Julien
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Faraday rotation is a fundamental magneto-optical phenomenon used in various optical control and magnetic field sensing techniques. Recently, it was shown that a giant Faraday rotation can be achieved in the low-THz regime by a single monoatomic graphene layer. Here, we demonstrate that this exceptional property can be manipulated through adequate nano-patterning, notably achieving giant rotation up to 6THz with features no smaller than 100nm. The effect of the periodic patterning on the Faraday rotation is predicted by a simple physical model, which is then verified and refined through accurate full-wave simulations.
description: 4 pages, 5 figures, submitted to Applied Physics Letters
Revisiting binary stars in population synthesis models
Creators: name: Hernández-Pérez, Fabiola
name: A, Gustavo Bruzual
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report results of a population synthesis model that follows the evolution of single and binary stars. In this model we include the 2HeWD merger channel, suggested by Han et al. (2002), for the formation of EHB stars. The physical parameters of the resulting EHB stars are derived from the BaSTI database, and are thus realistic and observationally supported. The predictions of this model are in good agreement with traditional population synthesis models, except when the spectrum of the stellar population is dominated by binary stars or their products, e.g., EHB stars in the UV of ETGs. We reproduce successfully the observed CMD and SED of the metal rich open cluster NGC 6791. The stellar population in this cluster may be archetypal of the stellar population in ETGs that show the UVX phenomenon. Our models should be appropriate to study the UV upturn in ETGs.
description: To appear in MNRAS. Accepted 2013 February 22. Received 2013 February 22; in original form 2012 December 20 (13 pages, 9 figures)
title: Μεθοδολογική προσέγγιση του προβλήματος επιλογής τόπου εγκατάστασης αεροδρομίων και εφαρμογή στην εγκατάσταση αεροδρομίου στο Νομό Ρεθύμνης
Creators: name: Βουμβουράκη Ευαγγελία
Publisher: name: Technical University of Crete
Year: 1990

description: Μη διαθέσιμο
High Performance Lyot and PIAA Coronagraphy for Arbitrarily shaped Telescope Apertures
Creators: name: Guyon, Olivier
name: Hinz, Philip H.
name: Cady, Eric
name: Belikov, Ruslan
name: Martinache, Frantz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Two high performance coronagraphic approaches compatible with segmented and obstructed telescope pupils are described. Both concepts use entrance pupil amplitude apodization and a combined phase and amplitude focal plane mask to achieve full coronagraphic extinction of an on-axis point source. While the first concept, named Apodized Pupil Complex Mask Lyot Coronagraph (APCMLC), relies on a transmission mask to perform the pupil apodization, the second concept, named Phase-Induced Amplitude Apodization complex mask coronagraph (PIAACMC), uses beam remapping for lossless apodization. Both concepts theoretically offer complete coronagraphic extinction (infinite contrast) of a point source in monochromatic light, with high throughput and sub-lambda/D inner working angle, regardless of aperture shape. The PIAACMC offers nearly 100% throughput and approaches the fundamental coronagraph performance limit imposed by first principles. The steps toward designing the coronagraphs for arbitrary apertures are described for monochromatic light. Designs for the APCMLC and the higher performance PIAACMC are shown for several monolith and segmented apertures, such as the apertures of the Subaru Telescope, Giant Magellan Telescope (GMT), Thirty Meter Telescope (TMT), the European Extremely Large Telescope (E-ELT) and the Large Binocular Telescope (LBT). Performance in broadband light is also quantified, suggesting that the monochromatic designs are suitable for use in up to 20% wide spectral bands for ground-based telescopes.
description: 19 pages, 12 figures, accepted for publication in ApJ
title: Αξιολόγηση επενδυτικών σχεδίων παραγωγής ηλεκτρικής ενέργειας από αιολικά συστήματα
Creators: name: Διδασκάλου Παναγιώτης Κωνσταντίνος
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
title: Αξιολόγηση ικανοτήτων εκτιμήσης κινδύνων και εγρήγορσης σε νέους οδηγούς στα πλαίσια της αμυντικής οδήγησης με την χρήση οπτικοακουστικών μέσων
Creators: name: Μούγιου Γεωργία
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
Vector boson production at hadron colliders: hard-collinear coefficients at the NNLO
Creators: name: Catani, S.
name: Cieri, L.
name: de Florian, D.
name: Ferrera, G.
name: Grazzini, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider QCD radiative corrections to vector-boson production in hadron collisions. We present the next-to-next-to-leading order (NNLO) result of the hard-collinear coefficient function for the all-order resummation of logarithmically-enhanced contributions at small transverse momenta. The coefficient function controls NNLO contributions in resummed calculations at full next-to-next-to-leading logarithmic accuracy. The same coefficient function is used in applications of the subtraction method to perform fully-exclusive perturbative calculations up to NNLO.
description: 13, pages, no figures. arXiv admin note: text overlap with arXiv:1106.4652
Additional file 1 of Expression of hormone receptors is associated with specific immunological profiles of the breast cancer microenvironment
Creators: name: Hanamura, Toru
name: Kitano, Shigehisa
name: Kagamu, Hiroshi
name: Yamashita, Makiko
name: Terao, Mayako
name: Okamura, Takuho
name: Kumaki, Nobue
name: Hozumi, Katsuto
name: Iwamoto, Takayuki
name: Honda, Chikako
name: Kurozumi, Sasagu
name: Niikura, Naoki
Publisher: name: figshare
Year: 2023
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Fig. S1. Association of typical biological processes with the expression of hormone receptors estimated using the gene expression profile of breast cancer. (a-f) Summary of results of GSEA performed on the METABRIC datasets is shown. Biological processes positively or inversely correlated with each gene expression are shown in the descending order of the absolute value of the normalized enrichment score (NSE) with absolute values of the log-transformed nominal p-values and FDR q-values. Thresholds of the nominal p-value and FDR q-value were set to < 0.05 and < 0.25, respectively, and the boundaries are shown in the graph by dashed lines. Fig. S2. Programmed death-ligand 1 (PD-L1) positive ratio in each immune cell fraction according to estrogen receptor (ER) status. (a-k) the percentage of PD-L1 positive cells in each immune cell fraction by ER status is shown. A summary of statistics value is shown at left side of figure. A summary of the recalculated statistics values excluding outliers is shown in the lower left of the figure. Fig. S3. Programmed death-ligand 1 PD-L1 positive ratio in each immune cell fraction according to progesterone receptor (PgR) status. (a-k) the percentage of PD-L1 positive cells in each immune cell fraction by PgR status is shown. A summary of statistics value is shown at left side of figure. A summary of the recalculated statistics values excluding outliers is shown in the lower left of the figure. Fig. S4. Programmed death-ligand 1 (PD-L1) positive ratio in each immune cell fraction according to androgen receptor (AR) status. (a-k) the percentage of PD-L1 positive cells in each immune cell fraction by AR status is shown. A summary of statistics value is shown at left side of figure. A summary of the recalculated statistics values excluding outliers is shown in the lower left of the figure. Fig. S5. Reanalysis of Figs. 2–4 using 1% cut-off point for ER and PgR. (a-d) Correlation of hTIL and hPD-L1 with protein expression of ER and PgR were reanalyzed using the cut-off points 1% for ER and PgR. (e, f) Association between ER / PgR status and subsets of tumor-infiltrating immune cells were reanalyzed using the cut-off points 1% for ER and PgR. (g, h) Recalculated statistics values excluding outliers are shown for ER and PgR status. Table S1. Clinical-pathological characteristics by ER status. Table S2. Clinical-pathological characteristics by PgR status. Table S3. Clinical-pathological characteristics by AR status.
Quantum phase transitions in a pseudogap Anderson-Holstein model
Creators: name: Cheng, Mengxing
name: Ingersent, Kevin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study a pseudogap Anderson-Holstein model of a magnetic impurity level that hybridizes with a conduction band whose density of states vanishes in power-law fashion at the Fermi energy, and couples, via its charge, to a nondispersive bosonic mode (e.g., an optical phonon). The model, which we treat using poor-man's scaling and the numerical renormalization group, exhibits quantum phase transitions of different types depending on the strength of the impurity-boson coupling. For weak impurity-boson coupling, the suppression of the density of states near the Fermi energy leads to quantum phase transitions between strong-coupling (Kondo) and local-moment phases. For sufficiently strong impurity-boson coupling, however, the bare repulsion between a pair of electrons in the impurity level becomes an effective attraction, leading to quantum phase transitions between strong-coupling (charge-Kondo) and local-charge phases. Even though the Hamiltonian exhibits different symmetries in the spin and charge sectors, the thermodynamic properties near the two types of quantum phase transition are closely related under spin-charge interchange. Moreover, the critical responses to a local magnetic field (for small impurity-boson coupling) and to an electric potential (for large impurity-boson coupling) are characterized by the same exponents, whose values place these quantum critical points in the universality class of the pseudogap Anderson model. One specific case of the pseudogap Anderson-Holstein model may be realized in a double-quantum-dot device, where the quantum phase transitions manifest themselves in the finite-temperature linear electrical conductance.
description: 26 pages and 19 figures
title: Επιτάχυνση διαφορικού εξελικτικού αλγορίθμου με τη χρήση τεχνητών νευρωνικών δικτύων - εφαρμογή στη βελτιστοποίηση αεροτομών
Creators: name: Ζωγράφος Ελευθέριος
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
Many-body localisation in non-fractured systems
Creators: name: Duffin, Christian
Publisher: name: Loughborough University
Year: 2022
Subjects: Other mathematical sciences not elsewhere classified

description: Many-body localisation (MBL) in closed quantum systems can often be understood in terms of the fracturing of the Fock space graph, where some Fock states are disconnected from the rest. The inability of some configurations to evolve into others results in broken ergodicity, and thus MBL. However, there are examples of systems with non-fractured Fock space graphs that still exhibit broken ergodicity, which can instead be attributed to reduced connectivity between Fock states. This work explores several models that possess this property. The first is the EastREM model, which describes a disordered lattice of spins with locally constrained spin-flipping. Here, MBL is understood to be introduced by the constraint due to some spin flips being forbidden. The GOEastREM is also introduced, which replaces the blocks with random matrices, thus ensuring that the overall block property is maintained, but their internal structure is randomised. Here, we discover that MBL is common between both models, confirming that it can be attributed to the block property specifically. The investigation is then extended to the case of periodic driving, in order to see whether this recovers ergodicity in both models. What we find is that the MBL eigenstates are mostly unchanged, independent of parameters used. The next model introduced is the GOE chain, which simplifies the block property by making them all equally sized. This model is studied using exact diagonalisation techniques, a flow equation method, and further analytically via the forward-scattering approximation. From our numerical work we determine that the system is Anderson localised by the blocks, regardless of parameters. This is contradicted by the forward-scattering approximation (FSA), which suggests that a phase transition exists at finite hopping amplitude. We attribute this to the failure of the FSA to take into account backward propagations, which negates self-interference due to Bragg reflections. Finally, we investigate Stark many-body localisation, found in interacting systems with a tilted potential term. Under periodic driving, we determine a resonance condition by which the localising effect of the potential is broken.