cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the problem of large-scale magnetic field generation in rotating compressible convection
Creators: name: Favier, Benjamin
name: Bushby, Paul J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Mean-field dynamo theory suggests that turbulent convection in a rotating layer of electrically-conducting fluid produces a significant alpha-effect, which is one of the key ingredients in any mean-field dynamo model. Provided that this alpha-effect operates more efficiently than (turbulent) magnetic diffusion, such a system should be capable of sustaining a large-scale dynamo. However, in the Boussinesq model that was considered by Cattaneo&Hughes (2006) the dynamo produced small-scale, intermittent magnetic fields with no significant large-scale component. In this paper, we consider the compressible analogue of the rotating convective layer that was considered by Cattaneo&Hughes (2006). Varying the horizontal scale of the computational domain, we investigate the dependence of the dynamo upon the rotation rate. Our simulations indicate that these turbulent compressible flows can drive a small-scale dynamo but, even when the layer is rotating very rapidly (with a mid-layer Taylor number of Ta=10^8), we find no evidence for the generation of a significant large-scale component of the magnetic field on a dynamical timescale. Like Cattaneo&Hughes(2006), we measure a negligible (time-averaged) alpha-effect when a uniform horizontal magnetic field is imposed across the computational domain. Although the total horizontal magnetic flux is a conserved quantity in these simulations, the (depth-dependent) horizontally-averaged magnetic field always exhibits strong fluctuations. If these fluctuations are artificially suppressed within the code, we measure a significant mean electromotive force that is comparable to that found in related calculations in which the alpha-effect is measured using the test-field method, even though we observe no large-scale dynamo action.
description: 25 pages, 10 figures, to appear in J. Fluid Mech
Geissois Labill.
Creators: name: Fortune Hopkins, Helen C.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Oxalidales
Cunoniaceae
Geissois

description: Geissois Labill. Sertum Austro Caledonicum 2: 50 (1825). TYPE. — Geissois racemosa Labill. REMARKS According to Quattrocchi (2000) the generic name is from the Greek word “ geisson ” meaning a tile, and refers to the overlapping winged seeds in the dehiscent fruits. Post & Kuntze (1903) gave the name as “ Gissois Lab.”, but their alteration of the spelling was not adopted and is not included in indices such as Index Nominum Genericorum (http:// ravenel.si.edu/notany/ing/ingForm.cfm, consulted 30 March 2006) or Index Kewensis (see International Plant Names Index, website http://www.ipni.org, consulted 30 March 2006).
description: Published as part of Fortune Hopkins, Helen C., 2006, Nomenclature and typification in Geissois (Cunoniaceae) in the South-West Pacific, pp. 311-327 in Adansonia (3) (3) 28 (2) on page 315, DOI: 10.5281/zenodo.5187044
description: {"references": ["QUATTROCCHI U. 2000. - CRC World Dictionary of Plant Names. CRC Press, Boca Raton, vols 1 - 4.", "POST T. VON & KUNTZE O. 1903. - Lexicon Generum Phanerogamarum. Deutsche Verlag-Anstalt, Stuttgart, 714 p. (dated 1904, published 1903)."]}
title: Πρόβλεψη κατανάλωσης νερού στο Ν.Χανίων χρησιμοποιώντας το νεύρο-ασαφές σύστημα
Creators: name: Μινουδάκη Χρυσή
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
Geissois FROM
Creators: name: Fortune Hopkins, Helen C.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Oxalidales
Cunoniaceae
Geissois

description: NAMES IN GEISSOIS FROM FIJI Types for the Fijian taxa were indicated by Smith (1952, 1985) and only very minor problems remain, such as the need to convert to “ lectotype ” some of the “ holotypes ” indicated by Smith (for G. imthurnii, G. superba and G. ternata var. serrata) and the need to lectotypify G. ternata. Since Geissois in Fiji was revised recently (Smith 1985) I have not attempted to see all the type material, and these names are included for the sake of completeness. Images of types at US and NY were viewed on the websites of the US National Herbarium Type Specimen Register (http://ravenel. si.edu/botany/type, consulted on 30 March 2006) and the New York Botanical Garden’s Virtual Herbarium (http://sciweb.nybg.org/science2/ VirtualHerbarium.asp, consulted on 30 March 2006). Sheet numbers for types at BISH and GH were taken from their on-line databases (http:// www.bishopmuseum.org/research/natsci/botany/ dbandkeys/botanydb.html, and http://cms.huh. harvard.edu/databases/specimen_index.html respectively, both consulted on 30 March 2006). Details of locality and date of collection are given from the protologues and are not repeated when discussing the holotypes or lectotypes for these names as I know of no ambiguities concerning these data.
description: Published as part of Fortune Hopkins, Helen C., 2006, Nomenclature and typification in Geissois (Cunoniaceae) in the South-West Pacific, pp. 311-327 in Adansonia (3) (3) 28 (2) on page 322, DOI: 10.5281/zenodo.5187044
description: {"references": ["SMITH A. C. 1952. - Studies of Pacific island plants, XII, the Cunoniaceae of Fiji and Samoa. Journal of the Arnold Arboretum 33: 119 - 149.", "SMITH A. C. 1985. - Flora vitiensis nova, vol. 3. Pacific Tropical Botanical Garden, Lawai, Kauai, Hawaii, 758 p."]}
title: Πρόβλεψη της πτώχευσης στις τράπεζες και τις επιχειρήσεις μέσα από στατιστικές και νοήμονες τεχνικές-μοντέλα για την εκτίμηση του κινδύνου πτώχευσης
Creators: name: Παπαγιάννη Αθηνά
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
Wolfgang Blösel: Die römische Republik - Forum und Expansion
Creators: name: Schmude, Michael P.
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Wolfgang Blösel: Die römische Republik - Forum und Expansion, München (Beck) 2015 [C.H. Beck Geschichte der Antike]. 304 S., (ISBN 978-3-406-67413-6).
description: Forum Classicum, Nr. 3 (2015): Forum Classicum
Fake news detection and social media trust: a cross-cultural perspective
Creators: name: Dabbous, Amal
name: Barakat, Karine Aoun
name: de Quero Navarro, Beatriz
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Social media is increasingly being used worldwide to produce and exchange information. However, the absence of adequate control mechanisms on this medium has led to concerns about the credibility of information in circulation. While this topic has gained researchers’ attention, little is known about the factors which allow individuals to detect fake news and lead them to trust social media as a source of information, and whether this varies across cultures. This cross-cultural study conducted in Spain and Lebanon uses structural equation modelling to explore these factors and presents them within a behavioural model. Findings show that verification behaviour, information skills and education have a positive influence on fake news detection with a stronger impact in Lebanon. Trust is positively affected by virality with higher influence in Lebanon, while ability to detect is shown to decrease trust in Spain. Frequency of use impacts trust equally in both countries.
title: Σύγκριση, αξιολόγηση και βελτίωση των γλωσσών μοντελοποίησης IDFE0 και e-EPC
Creators: name: Αναστασίου Κυριάκος
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
Simulation of optical interstellar scintillation
Creators: name: Habibi, Farhang
name: Moniez, Marc
name: Ansari, Reza
name: Rahvar, Sohrab
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stars twinkle because their light propagates through the atmosphere. The same phenomenon is expected on a longer time scale when the light of remote stars crosses an interstellar turbulent molecular cloud, but it has never been observed at optical wavelengths. The aim of the study described in this paper is to fully simulate the scintillation process, starting from the molecular cloud description as a fractal object, ending with the simulations of fluctuating stellar light curves. Fast Fourier transforms are first used to simulate fractal clouds. Then, the illumination pattern resulting from the crossing of background star light through these refractive clouds is calculated from a Fresnel integral that also uses fast Fourier transform techniques. Regularisation procedure and computing limitations are discussed, along with the effect of spatial and temporal coherency (source size and wavelength passband). We quantify the expected modulation index of stellar light curves as a function of the turbulence strength --characterised by the diffraction radius $R_{diff}$-- and the projected source size, introduce the timing aspects, and establish connections between the light curve observables and the refractive cloud. We extend our discussion to clouds with different structure functions from Kolmogorov-type turbulence. Our study confirms that current telescopes of ~4m with fast-readout, wide-field detectors have the capability of discovering the first interstellar optical scintillation effects. We also show that this effect should be unambiguously distinguished from any other type of variability through the observation of desynchronised light curves, simultaneously measured by two distant telescopes.
description: 11 pages, 11 figures, accepted for publication in Astronomy and Astrophysics
REX: Recursive, Delta-Based Data-Centric Computation
Creators: name: Mihaylov, Svilen R.
name: Ives, Zachary G.
name: Guha, Sudipto
Publisher: name: arXiv
Year: 2012
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: In today's Web and social network environments, query workloads include ad hoc and OLAP queries, as well as iterative algorithms that analyze data relationships (e.g., link analysis, clustering, learning). Modern DBMSs support ad hoc and OLAP queries, but most are not robust enough to scale to large clusters. Conversely, "cloud" platforms like MapReduce execute chains of batch tasks across clusters in a fault tolerant way, but have too much overhead to support ad hoc queries. Moreover, both classes of platform incur significant overhead in executing iterative data analysis algorithms. Most such iterative algorithms repeatedly refine portions of their answers, until some convergence criterion is reached. However, general cloud platforms typically must reprocess all data in each step. DBMSs that support recursive SQL are more efficient in that they propagate only the changes in each step -- but they still accumulate each iteration's state, even if it is no longer useful. User-defined functions are also typically harder to write for DBMSs than for cloud platforms. We seek to unify the strengths of both styles of platforms, with a focus on supporting iterative computations in which changes, in the form of deltas, are propagated from iteration to iteration, and state is efficiently updated in an extensible way. We present a programming model oriented around deltas, describe how we execute and optimize such programs in our REX runtime system, and validate that our platform also handles failures gracefully. We experimentally validate our techniques, and show speedups over the competing methods ranging from 2.5 to nearly 100 times.
description: VLDB2012
Prospects for high-resolution microwave spectroscopy of methanol in a Stark-deflected molecular beam
Creators: name: Jansen, Paul
name: Kleiner, Isabelle
name: Meng, Congsen
name: Lees, Ronald M.
name: Janssen, Maurice H. M.
name: Ubachs, Wim
name: Bethlem, Hendrick L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Recently, the extremely sensitive torsion-rotation transitions in methanol have been used to set a tight constraint on a possible variation of the proton-to-electron mass ratio over cosmological time scales. In order to improve this constraint, laboratory data of increased accuracy will be required. Here, we explore the possibility for performing high-resolution spectroscopy on methanol in a Stark-deflected molecular beam. We have calculated the Stark shift of the lower rotational levels in the ground torsion-vibrational state of CH3OH and CD3OH molecules, and have used this to simulate trajectories through a typical molecular beam resonance setup. Furthermore, we have determined the efficiency of non-resonant multi-photon ionization of methanol molecules using a femtosecond laser pulse. The described setup is in principle suited to measure microwave transitions in CH3OH at an accuracy below 10^{-8}.
Selbstbildnis mit Kaktus. Ein unikaler Holzschnitt von Erich Heckel (1883-1970)
Creators: name: Valter, Claudia
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2017

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 54 (2017): KulturGut: aus der Forschung des Germanischen Nationalmuseums
Ein „Jüngstes Gericht“ aus Schlesien. Zur Lokalisierung einer Figurengruppe des Spätmittelalters
Creators: name: Kammel, Frank Matthias
Publisher: name: KulturGut : aus der Forschung des Germanischen Nationalmuseums
Year: 2017

description: KulturGut : aus der Forschung des Germanischen Nationalmuseums, Nr. 54 (2017): KulturGut: aus der Forschung des Germanischen Nationalmuseums
Modified Newton's Law of Gravitation Due to Minimal Length in Quantum Gravity
Creators: name: Ali, Ahmed Farag
name: Tawfik, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A recent theory about the origin of the gravity suggests that the gravity is originally an entropic force. In this work, we discuss the effects of generalized uncertainty principle (GUP) which is proposed by some approaches to quantum gravity such as string theory, black hole physics and doubly special relativity theories (DSR), on the area law of the entropy. This leads to a $\sqrt{Area}$-type correction to the area law of entropy which imply that the number of bits $N$ is modified. Therefore, we obtain a modified Newton's law of gravitation. Surprisingly, this modification agrees with different sign with the prediction of Randall-Sundrum II model which contains one uncompactified extra dimension. Furthermore, such modification may have observable consequences at length scales much larger than the Planck scale.
description: 12 pages, no figures, references added
title: Ανοδική οξείδωση ενδοκρινικών διαταρακτών σε δευτεροβάθμια εκροή
Creators: name: Μπρέμπου Χριστίνα
Publisher: name: Technical University of Crete
Year: 2011

description:  Εισαγωγή στις προηγμένες διεργασίες οξείδωσης -- 2. Ενδοκρινικοί διαταρακτές
Christentum - Humanismus - Aufklärung: Von den Leiden Jesu zu den Leiden des jungen Werthers. Perspektiven einer deutschen Literaturgeschichte der Frühen Neuzeit (1500-1800)
Creators: name: Kemper, Hans-Georg
Publisher: name: Literaturstraße. Chinesisch-deutsche Zeitschrift für Sprach- und Literaturwissenschaft
Year: 2017

description: -
description: Literaturstraße. Chinesisch-deutsche Zeitschrift für Sprach- und Literaturwissenschaft, Bd. 5 (2004)
title: Μοντελοποίηση της υπόγειας ροής της λεκάνης απορροής του ποταμού Ευρώτα
Creators: name: Πολυχρονάκη Μαρία
Publisher: name: Technical University of Crete
Year: 2011

description:  Βασικές έννοιες υπόγειων υδάτων -- 2. Περιγραφή της υπό μελέτη περιοχής -- 3. Προσομοίωση ροής υπόγειων υδάτων -- 4. Εφαρμογή του κώδικα PTC
title: Προσρόφηση πετρελαϊκών ρύπων σε χημικά τροποποιημένο διατομίτη
Creators: name: Παπούλιας Παναγιώτης
Publisher: name: Technical University of Crete
Year: 2011

description:  Εισαγωγή -- 2: Περιγραφή ρύπων -- 3: Διατομίτης -- 4: Προσρόφηση -- 5: Πειραματικό μέρος -- 6: Αποτελέσματα -- 7: Συμπεράσματα και προτάσεις
La experiencia PIES AGILES: un programa formativo en agroecología para valorar la agrobiodiversidad y la biocultura de occidente
Creators: name: Heinze, Alan
Publisher: name: Zenodo
Year: 2023
Subjects: Agroecología
Investigación-Acción Participativa
PIES AGILES
ciencia abierta
Jalisco
Nayarit
Colima

description: Cartel presentado en el II Congreso Regional de Botánica 2023 "Los Recursos Vegetales del Occidente de México: Diversidad, Manejo y Conservación", organizado por La Sociedad Botánica de México, el Jardín Botánico de Vallarta y el Centro Universitario de la Costa de la Universidad de Guadalajara.
Poster presented at the 2023 II Regional Botanical Congress "Plant Resources from Western Mexico: Diversity, Management and Conservation", organized by he Botanical Society of Mexico, the Vallarta Botanical Garden and the University Center of the Coast of the University of Guadalajara.
Mingei Ontology
Creators: name: Meghini, Carlo
name: Bartalesi, Valentina
name: Metilli, Daniele
name: Partarakis, Nikolaos
name: Zabulis, Xenophon
Publisher: name: Zenodo
Year: 2020
Subjects: Mingei
Ontology
Crafts
Cultural Heritage
Intangible Cultural Heritage

description: This repository contains the **Craft Ontology (CrO)** developed in the [Mingei project](http://www.mingei-project.eu) to represent the knowledge collected about heritage crafts, including narratives collected about these crafts. CrO is provided as an [OWL](https://www.w3.org/OWL/) ontology using the [Turtle syntax](https://www.w3.org/TR/turtle/). CrO is an application ontology obtained by integrating several existing ontologies, notably: * [CIDOC CRM](http://www.cidoc-crm.org), a top ontology and an ISO standard forming the conceptual backbone of the CrO * [Narrative Ontology](http://dlnarratives.eu/ontology.html), a domain ontology focused on the representation of narratives * [FRBRoo](http://www.cidoc-crm.org/frbroo/home-0), a domain ontology for bibliographic records, resulting from the harmonization of FRBR with CRM * [OWL Time](https://www.w3.org/TR/owl-time/), a domain ontology recommended by W3C for the representation of time [OWL Time] * [Dublin Core](https://dublincore.org), for simple resource description Mingei has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 822336. 
Pseudogap and its connection to particle-hole asymmetry electronic state and Fermi arcs in cuprate superconductors
Creators: name: Zhao, Huaisong
name: Kuang, Lulin
name: Feng, Shiping
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The particle-hole asymmetry electronic state of cuprate superconductors and the related doping and temperature dependence of the Fermi arc length are studied based on the kinetic energy driven superconducting mechanism. By taking into account the interplay between the SC gap and normal-state pseudogap, the essential feature of the evolution of the Fermi arc length with doping and temperature is qualitatively reproduced. It is shown that the particle-hole asymmetry electronic state is a natural consequence due to the presence the normal-state pseudogap in the particle-hole channel. The Fermi arc length increases with increasing temperatures below the normal-state pseudogap crossover temperature $T^{*}$, and it covers the full length of the Fermi surface for $T>T^{*}$. In particular, in analogy to the temperature dependence of the Fermi arc length, the low-temperature Fermi arc length in the underdoped regime increases with increasing doping, and then it evolves into a continuous contour in momentum space near the end of the superconducting dome. The theory also predicts an almost linear doping dependence of the Fermi arc length.
description: 9 pages, 8 figures
Mingei Ontology
Creators: name: Meghini, Carlo
name: Bartalesi, Valentina
name: Metilli, Daniele
name: Partarakis, Nikolaos
name: Zabulis, Xenophon
Publisher: name: Zenodo
Year: 2020
Subjects: Mingei
Ontology
Crafts
Cultural Heritage
Intangible Cultural Heritage

description: This repository contains the **Craft Ontology (CrO)** developed in the [Mingei project](http://www.mingei-project.eu) to represent the knowledge collected about heritage crafts, including narratives collected about these crafts. CrO is provided as an [OWL](https://www.w3.org/OWL/) ontology using the [Turtle syntax](https://www.w3.org/TR/turtle/). CrO is an application ontology obtained by integrating several existing ontologies, notably: * [CIDOC CRM](http://www.cidoc-crm.org), a top ontology and an ISO standard forming the conceptual backbone of the CrO * [Narrative Ontology](http://dlnarratives.eu/ontology.html), a domain ontology focused on the representation of narratives * [FRBRoo](http://www.cidoc-crm.org/frbroo/home-0), a domain ontology for bibliographic records, resulting from the harmonization of FRBR with CRM * [OWL Time](https://www.w3.org/TR/owl-time/), a domain ontology recommended by W3C for the representation of time [OWL Time] * [Dublin Core](https://dublincore.org), for simple resource description Mingei has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 822336.
description: Open Access
title: Μοντελοποίηση της υπόγειας ροής και της μεταφοράς του εξασθενούς χρωμίου στην περιοχή του Ασωπού ποταμού, νομού Αττικής
Creators: name: Παλαιογιάννη-Μπέλλου Άρτεμις
Publisher: name: Technical University of Crete
Year: 2010

description:  Υπόγεια ροή και μεταφορά μάζας  2. Περιγραφή περιοχής μελέτης  3. Χρώμιο -- 4. Εφαρμοσμένη μοντελοποίηση υπόγειων υδάτων και μεταφοράς ρύπων -- 5. Περιγραφή μοντέλου PTC -- 6. Περιγραφή εφαρμογής ArcGIS 9.2 -- 7. Περιγραφή προγράμματος GEO 5 -- 8. Χρήση μοντέλου PTC
K-Reach: Who is in Your Small World
Creators: name: Cheng, James
name: Shang, Zechao
name: Cheng, Hong
name: Wang, Haixun
name: Yu, Jeffrey Xu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: We study the problem of answering k-hop reachability queries in a directed graph, i.e., whether there exists a directed path of length k, from a source query vertex to a target query vertex in the input graph. The problem of k-hop reachability is a general problem of the classic reachability (where k=infinity). Existing indexes for processing classic reachability queries, as well as for processing shortest path queries, are not applicable or not efficient for processing k-hop reachability queries. We propose an index for processing k-hop reachability queries, which is simple in design and efficient to construct. Our experimental results on a wide range of real datasets show that our index is more efficient than the state-of-the-art indexes even for processing classic reachability queries, for which these indexes are primarily designed. We also show that our index is efficient in answering k-hop reachability queries.
description: VLDB2012
title: Το διοξείδιο του τιτανίου TiO2 ως φωτοκαταλύτης και η εφαρμογή του σε κατασκευαστικά υλικά
Creators: name: Τσιριγωτάκη Ελένη
Publisher: name: Technical University of Crete
Year: 2011

description:  Εισαγωγή -- 2. Διοξείδιο του Τιτανίου (TIO2) - 3. Διαδιακασίες που ενεργοποιούνται από την προσπίπτουδα ακτινοβολία (photoinduced processes) -- 4. Εφαρμογές του TIO2 σε κατασκευαστικά υλικα -- 5. Ανερχόμενες εφαρμογές -- 6. Συμπεράσματα - Προτάσεις
title: Ταξινόμηση δορυφορικών εικόνων σε επίπεδο υπο-εικονοστοιχείου για την εκτίμηση του συντελεστή εκπομπής επιφάνειας εδάφους σε αστικές περιοχές
Creators: name: Μητράκα Ζηνοβία
Publisher: name: Technical University of Crete
Year: 2011

description: Μη διαθέσιμο
title: Διαχείριση εκπομπών υδρόθειου στο κέντρο επεξεργασίας λυμάτων του Ηρακλείου
Creators: name: Μιχαλοδημητράκη Ελένη
Publisher: name: Technical University of Crete
Year: 2011

description: 1. Εισαγωγή --2. Θεωρητικό υπόβαθρο --3. Μεθοδολογία --4. Ποσοτικος προσδιορισμός εκπομπών οσμών στη Δ.Ε.Υ.Α.Η. --5. Πειραματική αξιολόγηση βιοφίλτρου απόσμησης -- 6. Συμπεράσματα --7. Βιβλιογραφικές αναφορές -- Παράρτημα
title: Μέθοδοι ιεραρχικής προσαρμοτικής αντίληψης και αναπαράστασης περιβάλλοντος ευφυών κινητών ρομπότ
Creators: name: Πνευματικάτος Χρήστος
Publisher: name: Technical University of Crete
Year: 1998

description: Μη διαθέσιμο
FAIRiser vos données de recherche avec PIDs
Creators: name: Mejias, Gabriela
Publisher: name: Zenodo
Year: 2022
Subjects: DOIs
PIDs
DataCite
Research data

description: Cette présentation a été faite dans le cadre de l'atelier Dataverse organisé lors du colloque international "Science Ouverte au Sud", le 25 octobre 2022.
Half-integer Mott-insulator phases in the imbalanced honeycomb lattice
Creators: name: Gawryluk, Krzysztof
name: Miniatura, Christian
name: Grémaud, Benoît
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using mean-field theory, we investigate the ground state properties of ultracold bosons loaded in a honeycomb lattice with on-site repulsive interactions and imbalanced nearest-neighbor hopping amplitudes. Taking into account correlations between strongly coupled neighboring sites through an improved Gutzwiller ansatz, we predict the existence of half-integer Mott-insulator phases, i.e. states with half-integer filling and vanishing compressibility. These insulating phases result from the interplay between quantum correlations and the topology of the honeycomb lattice, and could be easily addressed experimentally as they have clear signatures in momentum space.
description: 8 pages, 8 figures
title: Ανάπτυξη ρομποτικού συστήματος για την αποπαλετοποίηση και το άδειασμα σάκων πολυαιθυλενίου
Creators: name: Καββουσανός Εμμανουήλ Μ.
Publisher: name: Technical University of Crete
Year: 2001

description: Μη διαθέσιμο
D3.2 End-to-End Security Framework
Creators: name: Timotej Gale
name: Carolina Fortuna
name: Andrej Čampa
Publisher: name: Zenodo
Year: 2021
Subjects: End-to-End Security
Framework
Service Security
Identity and Access Management
Cloud
Edge

description: The D3.2 – End-to-End Security Framework provides a description of the initial version of the MATRYCS End-to-End Security Framework, spanning the complete MATRYCS architecture (MATRYCS-GOVERNANCE, MATRYCS-PROCESSING and MATRYCS-ANALYTICS), according with the MATRYCS high-level reference architecture defined in the deliverable D2.3 – MATRYCS Reference Architecture for Buildings Data v1.0.

This document, accompanying the 1st technology releases of other MAYTRYCS layers and modules reported in D3.1 – MATRYCS-GOVERNANCE (1st technology release), D4.1 - MATRYCS-PROCESSING (1st technology release), and D4.4 - MATRYCS-ANALYTICS and Open Cloud-based Data Analytics Toolbox (1st technology release), is mainly focused on background overview and design in addition to preliminary evaluation of the envisaged technological solutions for the End-to-End Security Framework. It reports on the activities up to M12 in WP3 – Data services & Semantic Enrichment Layer (MATRYCS-GOVERNANCE), specifically task 3.6 – End-to-End Security Framework.

This deliverable surveys and provides sufficient background of the relevant privacy and security aspects in information systems for application in the MATRYCS project. Moreover, it reports on the design and initial implementation of the MATRYCS End-to-End Security Framework while also presenting and valuating the related composition of envisaged technology solutions to be adopted. Finally, the deliverable outlines the integration aspects of the End-to-End Security Framework with MATRYCS modules and assets, also considering a set of security and privacy guidelines to be adopted throughout the MATRYCS DevSecOps process.
title: Χρηματοοικονομική και στατιστική ανάλυση της συμπεριφοράς των μεταποιητικών μικρομεσαίων επιχειρήσεων στην Ελλάδα
Creators: name: Ψιμάρνη-Βούλγαρη Φωτεινή
Publisher: name: Technical University of Crete
Year: 2000

description: φ. 1: Οι ελληνικές επιχειρήσεις και το περιβάλλον τους -- Κεφ. 2: Βιβλιογραφική ανασκόπηση, επιλογή δείγματος και μεταβλητών -- Κεφ. 3: Μεθοδολογίες ταξινόμησης και εφαρμογή της μεθόδου ομαδοποίησης -- Κεφ. 4: Πολυκριτήρια ανάλυση, εφαρμογή της μεθόδου UTADIS και ανάπτυξη υποδειγμάτων -- Κεφ. 5: Σύγκριση ΜΜΕ και μεγάλων μεταποιητικών επιχειρήσεων -- Κεφ. 6: Μέτρα πολιτικής και στρατηγικές επιλογές των ΜΜΕ
How many invariant polynomials are needed to decide local unitary equivalence of qubit states?
Creators: name: Maciazek, Tomasz
name: Oszmaniec, Michał
name: Sawicki, Adam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Given L-qubit states with the fixed spectra of reduced one-qubit density matrices, we find a formula for the minimal number of invariant polynomials needed for solving local unitary (LU) equivalence problem, that is, problem of deciding if two states can be connected by local unitary operations. Interestingly, this number is not the same for every collection of the spectra. Some spectra require less polynomials to solve LU equivalence problem than others. The result is obtained using geometric methods, i.e. by calculating the dimensions of reduced spaces, stemming from the symplectic reduction procedure.
description: 22 pages
BlueCloud 2026 D6.1 - Communication, Dissemination, Outreach and Education Plan, 1st release
Creators: name: Drago, Federico
Publisher: name: Zenodo
Year: 2023
Subjects: EOSC
Marine research
Newsletter
Open Science
Social media
Training
Website

description: The Communication, Dissemination, Outreach and Education Plan (hereafter
"communication plan") for the Horizon Europe project Blue-Cloud 2026
("Blue-Cloud 2026") aims to promote and disseminate the project's assets
and activities to relevant stakeholders. Blue-Cloud 2026 focuses on
developing a collaborative web-based Open Science environment providing
simplified access to an unprecedented wealth of multi-disciplinary datasets
(from observations or models) as well as access to analytical services and
computing facilities essential for ocean science, instrumental for
increasing collaboration among researchers, industry, and policymakers. A
co-ordinated, efficient and effective 42-month Communication,
Dissemination, Outreach and Education Strategy will be implemented, with
specific communication and exploitation campaigns for raising awareness of
the project, its measurable results, the overall scientific benefits,
impacts, and measures for reaching end-users and other stakeholders. The
communication campaigns will exploit various communication channels,
including the project website, social media, press releases, newsletters,
and training & outreach events, amongst others, to engage with its key
target audiences, as identified and described in the plan. In particular,
the project features the launch of the Blue-Cloud Training Academy, which
will focus on building capacity among targeted stakeholders on the use of
Blue-Cloud services, and on promoting uptake of FAIR practices in marine
research. The plan also highlights the project's active role in discussions
with communities engaged in the development of the European Open Science
Cloud (EOSC) and digital ocean twinning initiatives, contributing to their
potential to drive scientific innovation and economic growth. Through
effective communication and engagement with the target audiences,
Blue-Cloud 2026 aims to consolidate and expand a community of stakeholders
committed to advancing Open Science practices in the marine research
domain.
title: Μία πολυκριτήρια προσέγγιση για την ανάλυση της ικανοποίησης των επιβατών αεροπορικών εταιριών βασισμένη στο μοντέλο ποιότητας του Kano
Creators: name: Χουδαλακη Ιωαννα
Publisher: name: Technical University of Crete
Year: 2018

description: Η ικανοποίηση πελατών συγκεντρώνει ολοένα και μεγαλύτερο ενδιαφέρον παγκοσμίως. Η μέτρηση της ικανοποίησης αποτελεί αναγκαία προϋπόθεση για την επιτυχία των επιχειρήσεων και οργανισμών αφού συμβάλλει σημαντικά στη διαδικασία διαρκούς βελτίωσης των παρεχόμενων προϊόντων ή υπηρεσιών. Ωστόσο, σημαντικότατο παράγοντα ώστε οι επιχειρήσεις να διατηρούν ικανοποιημένους πελάτες αποτελεί η καλή γνώση των απαιτήσεων-προσδοκιών των πελατών.
Η ικανοποίηση συνδέεται στις περισσότερες περιπτώσεις με την αντιλαμβανόμενη ποιότητα μίας υπηρεσίας/προϊόντος. Όσο υψηλότερη είναι η ποιότητα, τόσο υψηλότερη θα είναι και η ικανοποίηση του πελάτη, καθώς και το αντίστροφο. Όμως, εάν μία υπηρεσία/προϊόν ικανοποιεί τις απαιτήσεις των πελατών αυτό δε σημαίνει κατ’ ανάγκη ότι δημιουργεί και ικανοποίηση.
Η παρούσα εργασία εξετάζει την ικανοποίηση των επιβατών των δύο μεγαλύτερων αεροπορικών εταιριών που δραστηριοποιούνται στην Ελλάδα, Aegean Airlines και Ryanair, όσον αφορά την αντιληπτή ποιότητα των χαρακτηριστικών τους.
Ουσιαστικά, επιχειρείται να δοθεί απάντηση στο ερώτημα «Τι είναι αυτό που προσδοκούν οι επιβάτες από την αεροπορική εταιρεία;» Για την ανάλυση της ικανοποίησης των επιβατών από τις δύο αεροπορικές εταιρίες, χρησιμοποιείται η πολυκριτήρια μέθοδος MUSA, ενώ η κατηγοριοποίηση των χαρακτηριστικών ποιότητας (υπηρεσιών) που προσφέρονται από την κάθε εταιρία, πραγματοποιείται σύμφωνα με τα τρία επίπεδα ποιότητας του μοντέλου του Kano. Σύμφωνα με το τελευταίο, τα χαρακτηριστικά ποιότητας ταξινομούνται σε τρία διακριτά επίπεδα: αναμενόμενης ποιότητας, επιθυμητής ποιότητας και ελκυστικής ποιότητας.
Οι δύο αεροπορικές εταιρείες που εξετάζονται, σύμφωνα με τα στατιστικά στοιχεία του 2016 (πηγή: (aia.gr, n.d.)), συγκέντρωσαν αθροιστικά το 71% του μεριδίου αγοράς στο διεθνή αερολιμένα Αθηνών και αποτελούν κυρίαρχες στον κλάδο τους για την Ελλάδα. Σε αυτό το σημείο πρέπει να σημειωθεί ότι μελετώνται δύο διαφορετικού τύπου αεροπορικές εταιρίες, μια συμβατική (Aegean) και μία χαμηλού κόστους (Ryanair), όπου εξ’ ορισμού διαφέρουν οι υπηρεσίες που παρέχονται στους πελάτες.
Με δεδομένο το προηγούμενο, το παραπάνω ερώτημα μετατρέπεται στα εξής δύο: «Τι είναι αυτό που προσδοκούν οι επιβάτες από μία συμβατική αεροπορική εταιρεία;» και «Τι είναι αυτό που προσδοκούν οι επιβάτες από μία αεροπορική εταιρεία χαμηλού κόστους;». Στην παρούσα διπλωματική, αφενός παρουσιάζεται η ‘αξιοποίηση’ των δεδομένων μιας έρευνας ικανοποίησης που ακολουθεί τις αρχές της πολυκριτήριας μεθόδου MUSA για τις ανάγκες του μοντέλου ποιότητας του Kano, αφετέρου αναζητούνται τυχόν διαφοροποιήσεις των απαιτήσεων των επιβατών μεταξύ μιας συμβατικής αεροπορικής σε σχέση με μια αεροπορική εταιρεία χαμηλού κόστους.
D6.1 - Communication, Dissemination, Outreach and Education Plan, 1st release
Creators: name: Drago, Federico
Publisher: name: Zenodo
Year: 2023
Subjects: EOSC
Marine research
Newsletter
Open Science
Social media
Training
Website

description: The Communication, Dissemination, Outreach and Education Plan (hereafter
"communication plan") for the Horizon Europe project Blue-Cloud 2026
("Blue-Cloud 2026") aims to promote and disseminate the project's assets
and activities to relevant stakeholders. Blue-Cloud 2026 focuses on
developing a collaborative web-based Open Science environment providing
simplified access to an unprecedented wealth of multi-disciplinary datasets
(from observations or models) as well as access to analytical services and
computing facilities essential for ocean science, instrumental for
increasing collaboration among researchers, industry, and policymakers. A
co-ordinated, efficient and effective 42-month Communication,
Dissemination, Outreach and Education Strategy will be implemented, with
specific communication and exploitation campaigns for raising awareness of
the project, its measurable results, the overall scientific benefits,
impacts, and measures for reaching end-users and other stakeholders. The
communication campaigns will exploit various communication channels,
including the project website, social media, press releases, newsletters,
and training & outreach events, amongst others, to engage with its key
target audiences, as identified and described in the plan. In particular,
the project features the launch of the Blue-Cloud Training Academy, which
will focus on building capacity among targeted stakeholders on the use of
Blue-Cloud services, and on promoting uptake of FAIR practices in marine
research. The plan also highlights the project's active role in discussions
with communities engaged in the development of the European Open Science
Cloud (EOSC) and digital ocean twinning initiatives, contributing to their
potential to drive scientific innovation and economic growth. Through
effective communication and engagement with the target audiences,
Blue-Cloud 2026 aims to consolidate and expand a community of stakeholders
committed to advancing Open Science practices in the marine research
domain.
title: Fuel-minimizing vehicle trajectory specification in the presence of traffic lights
with certain or stochastic switching times
Creators: name: Καλογιαννη Ιωαννα
Publisher: name: Technical University of Crete
Year: 2018

description: Driving style of road vehicles has a significant impact on the fuel economy, hence the recent term eco-driving to denote a driving style that reduces fuel consumption. In the last decades, autonomous driving, but also vehicular communications are becoming more and more important. One application of vehicle connectivity is to receive information about the next signal switching time when vehicles approach a traffic light. Based on this information, appropriately developed systems (or apps), known as GLOSA (Green Light Optimal Speed Adaptation), compute a fuel-efficient velocity profile for the vehicle to cross the traffic lights, e.g. without stopping. The main purpose of this thesis is to generate optimal (fuel-minimising) trajectories for vehicles crossing a signalized junction, with traffic signals operated in either fixed-time or real-time mode. In the case of fixed-time signals, the next switching time is known beforehand; in real-time signals, the next switching time is decided in real time based on the prevailing traffic conditions and is therefore uncertain in advance. This thesis approaches the problem by using traffic lights' information and calculating a trajectory and a velocity profile for the vehicle, based on the vehicle’s initial state (position and speed) and a fixed final destination state (downstream of the junction). In the case of fixed signals, an appropriate optimal control problem is formulated and solved analytically via the Pontryagin's Minimum Principle (PMP). In the case of real-time signals, availability of a time-window of possible signal switching times, along with the corresponding probability distribution, is assumed, and the problem is cast in the format of a stochastic optimal control problem and is solved numerically using Stochastic Dynamic Programming techniques.
Hvordan gjøre forskningsdata åpne og FAIR? Presentasjon webinar 09.12.22
Creators: name: Benedicte, Juhasz Ida
Publisher: name: Zenodo
Year: 2022
Subjects: FAIR
FAIR data
Research data management
Data archiving
UiB Open Research Data
Library
Open Data

description: The deposit are the slides for a presentation given as an open webinar in Norwegian on "How to make research data open and FAIR", and following introduction to UiB Open Research Data, held on December 9th 2022. Sharing and re-using quality-assured research data is considered good scientific practice. Most funders, e.g. Norwegian Research Council or Horizon Europe, and publishers require that the research data from a project is made openly available. The saying is "as open as possible, as restricted as necessary", meaning that research data should be openly available unless prevented by legitimate considerations relating to security, protection of personal privacy, IPR or trade secrets. This course consists of two short modules. In the first part you will get a short introduction to the FAIR-principles and how you can make your research data open and FAIR. In the second part, we will give an introduction to our archive UiB Open Research Data, and how to archive your data here.
Semiclassical Partition Functions for Gravity with Cosmic Strings
Creators: name: Duston, Christopher L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 83C45, 51P05

description: In this paper we describe an approach to construct semiclassical partition functions in gravity which are complete in the sense that they contain a complete description of the differentiable structures of the underlying 4-manifold. In addition, we find our construction naturally includes cosmic strings. We discuss some possible applications of the partition functions in the fields of both quantum gravity and topological string theory
description: 17 pages, 2 figures, revisions of examples
The Quasi-Maxwellian Equations of General Relativity: Applications to the Perturbation Theory
Creators: name: Novello, M.
name: Bittencourt, E.
name: Salim, J. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A comprehensive review of the equations of general relativity in the quasi-Maxwellian (QM) formalism introduced by Jordan, Ehlers and Kundt is made. Our main interest concerns its applications to the analysis of the perturbation of standard cosmology in the Friedman-Lemaître-Robertson-Walker framework. The major achievement of the QM scheme is its use of completely gauge independent quantities. We shall see that in the QM-scheme we deal directly with observable quantities. This reveals its advantage over the old method introduced by Lifshitz et al that deals with perturbation in the standard Einstein framework. For completeness, we compare the QM-scheme to the gauge-independent method of Bardeen, a procedure consisting on particular choices of the perturbed variables as a combination of gauge dependent quantities.
description: The main goal of this review is to make a little more popular the use of the JEK frame in the realm of perturbation theory of Friedman universes. Indeed, the Lifshitz-Bardeen method and the JEK frame give the same results for the perturbations in the linear regime. The main interest on JEK rests on its unambiguous way to deal with perturbation within the cosmological FLRW scenario
title: Integrated traffic control at motorway bottlenecks using variable speed limits and efficient vehicles lane assignment
Creators: name: Σκουφουλας Δημητριος-Ηλιας
Publisher: name: Technical University of Crete
Year: 2018

description: Motorway traffic congestion, typically initiated at bottleneck locations, is a major problem for modern societies, causing serious infrastructure degradation. According to empirical investigations, capacity flow in conventional traffic is not reached simultaneously at all lanes. Thus, traffic breakdown may occur on one lane, while capacity reserves are still available on other lanes. Naturally, once congestion appears on one lane, it spreads fast to the other lanes as well, as drivers on the affected lane attempt to escape the speed drop via lane changing. After congestion has occurred, retarded and different vehicle acceleration at the congestion head causes the so-called capacity drop phenomenon, which breeds a reduction in the mainstream flow of a motorway, while a queue is forming upstream of the bottleneck location. The most efficient way to mitigate this problem is the development and implementation of proper traffic control strategies. This thesis investigates via microscopic simulation the integrated use of two feedback control strategies utilizing Vehicle Automation and Communication Systems (VACS) in different penetration rates, aiming at maximising throughput at bottleneck locations. The first control strategy employs Mainstream Traffic Flow Control (MTFC) using appropriate Variable Speed Limits (VSL) that are communicated to all vehicles within specific controlled sections of the motorway. The second control strategy delivers appropriate lane-changing actions to selected connected vehicles, again within specific controlled sections. Simulation results demonstrated the effectiveness of the integrated use of strategies for all performance indexes considered.
title: Ανάλυση γραμμών παραγωγής δύο σταδίων με ζήτηση ενδιάμεσων προϊόντων
title: Analysis of two stage production lines with intermediate product demand
Creators: name: Καρυδης Θωμας
Publisher: name: Technical University of Crete
Year: 2018

description: Στην παρούσα διπλωματική εργασία εξετάζεται μια γραμμή παραγωγής δύο σταδίων. Τα προϊόντα που παράγονται από το πρώτο στάδιο χρησιμοποιούνται τόσο ως πρώτη ύλη από το δεύτερο στάδιο αλλά και ως τελικά προϊόντα. Οι αφίξεις των πελατών είναι τυχαίες και  ακολουθούν την κατανομή Poisson, ενώ οι χρόνοι παραγωγής είναι εκθετικά κατανεμημένοι. Στόχος είναι η σύγκριση διαφόρων απλών πολιτικών ελέγχου των αποθεμάτων ενδιαμέσων και τελικών προϊόντων, ώστε να επιλεγούν αυτές που ελαχιστοποιούν το κόστος λειτουργίας του συστήματος. Για το σκοπό αυτό αναπτύσσονται αριθμητικά μοντέλα, που περιγράφουν τη λειτουργία του συστήματος για κάθε εξεταζόμενη πολιτική και επιτρέπουν την εκτίμηση του κόστους λειτουργίας σε κάθε περίπτωση.
Systematic decomposition of the neutrinoless double beta decay operator
Creators: name: Bonnet, Florian
name: Hirsch, Martin
name: Ota, Toshihiko
name: Winter, Walter
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the systematic decomposition of the dimension nine neutrinoless double beta decay operator, focusing on mechanisms with potentially small contributions to neutrino mass, while being accessible at the LHC. We first provide a (d=9 tree-level) complete list of diagrams for neutrinoless double beta decay. From this list one can easily recover all previously discussed contributions to the neutrinoless double beta decay process, such as the celebrated mass mechanism or "exotics", such as contributions from left-right symmetric models, R-parity violating supersymmetry and leptoquarks. More interestingly, however, we identify a number of new possibilities which have not been discussed in the literature previously. Contact to earlier works based on a general Lorentz-invariant parametrisation of the neutrinoless double beta decay rate is made, which allows, in principle, to derive limits on all possible contributions. We furthermore discuss possible signals at the LHC for mediators leading to the short-range part of the amplitude with one specific example. The study of such contributions would gain particular importance if there were a tension between different measurements of neutrino mass such as coming from neutrinoless double beta decay and cosmology or single beta decay.
description: 32 pages, 5 figures, 10 tables. Added errata for version 1