cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Observer Design for Interconnected Systems and Implementation via Differential-Algebraic Equations
Creators: name: Wassermann, Barton
Publisher: name: The Open University
Year: 2009

description: A new approach to the design of observers of nonlinear dynamical systems is presented. Generally, linear or nonlinear control systems are expressed as explicit systems of differential equations and solved either analytically or numerically. If numerically, they are implemented using standard ordinary differential equation (ODE) solvers. In this thesis, a system is decomposed and modeled as an interconnection between two observer subsystems, particularly, as canonical DAE observers. In general, control design engineers may be faced with a formidable problem of solving this system analytically or in obtaining closed-form solutions. To attest to the complexity and complications in treating a system of interconnected DAE observer systems, a scaled-down version of a publication on “Small-Gain Theorem” is included in the appendix for the reader’s perusal. (A brief introduction to “Small-Gain Theorem” can be found in Chapter 4). The premise of this thesis is to demonstrate that, where the design of an observer plays a major role involving output feedback, there may be advantages in formulating a control system as a differential-algebraic equation (DAE), especially in the case of interconnected subsystems. An implicit system of interconnected DAE observers is considered and shown implementable using an existing DAE solver, whose resolution allows one the capability of computing input and output bounds. This is based on fixed or variable timesteps within the operating interval of each subsystem to ensure input-output stability (IOS) and the observability property of the interconnected observer system. The observer design method is based on the extended linearization approach. The basic background is provided for the design process of an interconnected observer system using DAE. Note, the application of the new approach has not been considered previously for the case of an interconnected DAE observer system.
Identification of a Multi-Dimensional Reaction Coordinate for Crystal Nucleation in $\text{Ni}_3\text{Al}$
Creators: name: Liang, Yanyan
name: Leines, Grisell Díaz
name: Drautz, Ralf
name: Rogal, Jutta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nucleation during solidification in multi-component alloys is a complex process that comprises the competition between different crystalline phases as well as chemical composition and ordering. Here, we combine transition interface sampling with an extensive committor analysis to investigate the atomistic mechanisms during the initial stages of nucleation in $\text{Ni}_3\text{Al}$. The formation and growth of crystalline clusters from the melt are strongly influenced by the interplay between three descriptors: the size, crystallinity, and chemical short-range order of the emerging nuclei. We demonstrate that it is essential to include all three features in a multi-dimensional reaction coordinate to correctly describe the nucleation mechanism, where in particular the chemical short-range order plays a crucial role in the stability of small clusters. The necessity of identifying multi-dimensional reaction coordinates is expected to be of key importance for the atomistic characterization of nucleation processes in complex, multi-component systems.
Study on the critical parameters of the electrical behavior of triple gate junctionless finfets and circuit simulations
Creators: name: Ζιώγας, Κοσμάς Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Μοντελοποίηση
Τρανζίστορ χωρίς επαφές τριπλής πύλης
Προσομοιώσεις
Modeling
Triple Gate Junctionless FinFET
Simulations

description: The purpose of this Thesis is the study of the important electrical characteristics of a Junctionless FinFET as well as the comparison of the simulations between TCAD and HSPICE/Spectre. The first Chapter is a discussion about the various languages with which we can either create the physical part of the device or create the model file of the device and use it to run simulations on it, or languages that are being used to describe the hardware. Moving on to the second Chapter, some of the well-known and well-used across the industry FET advanced node devices are listed, with the main inclusive target of the evolution being to minimize area and also gain improved performance. The final and third chapter is about the simulations and the results from this Thesis. Finally, the is a Conclusions chapter where we are discussing about future work and improvements and changes there need to be made in order to be closer to the production of the real industry world. In the final pages there is an Appendix A with the device model and an Appendix B describing the next steps to insert the device in a PDK
description: Σκοπός της συγκεκριμένης διπλωματικής εργασίας είναι η μελέτη των κρίσιμων ηλεκτρικών χαρακτηριστικών ενός τρανζίστορ FinFET τριπλής πύλης χωρίς επαφές (Junctionless Triple Gate FinFETs. Το πρώτο κεφάλαιο αναφέρεται στη μοντελοποίηση των ημιαγωγικών διατάξεων και γενικά στις γλώσσες προγραμματισμού που μπορούν να χρησιμοποιηθούν στον κόσμο των ηλεκτρονικών. Περνώντας στο δεύτερο κεφάλαιο αναφερόμαστε στις πιο πρόσφατες διατάξεις τρανζίστορ που χρησιμοποιούνται στον ηλεκτρονικό κόσμο. Η σειρά αναφοράς είναι βάσει τη χρονολογία χρησιμοποίησης τους, επομένως βάση των δυνατοτήτων τους, στη συνεχή έρευνα για πιο γρήγορα τρανζίστορ, με περισσότερες δυνατότητες όσον αφορά το ρεύμα που παράγουν, με χαμηλότερη κατανάλωση και γρηγορότερη απόκριση. Στο τρίτο μέρος της Διπλωματικής αναφερόμαστε στο πειραματικό/πρακτικό μέρος, όπου παραθέτουμε τις προσομοιώσεις που έχουμε τρέξει με βάσει το μοντέλο που αναπτύχθηκε. Κλείνοντας να πούμε ότι στο Παράρτημα Α παρατίθεται ο κώδικας ολόκληρου του μοντέλου και στο Παράρτημα Β υπάρχει μία περιγραφή του PDK
Heavy fermion superconductivity in the filled skutterudite compound PrOs$_4$Sb$_{12}$
Creators: name: Maple, M. B.
name: Ho, P. -C.
name: Zapf, V. S.
name: Yuhasz, W. M.
name: Frederick, N. A.
name: Bauer, E. D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The filled skutterudite compound \PrOsSb{} has been found to exhibit superconductivity with a critical temperature $T_\mathrm{c} = 1.85$ K that develops out of a heavy Fermi liquid with an effective mass $m^{*} \approx 50 m_\mathrm{e}$. The current experimental situation regarding the heavy fermion state, the superconducting state, and a high field, low temperature phase that is apparently associated with magnetic or quadrupolar order in \PrOsSb{} is briefly reviewed herein.
description: 4 pages, 2 figures, presented at the LT23 23rd International Conference on Low Temperature Physics, Hiroshima, Japan
Metamagnetic transitions and magnetoelectric responses in a chiral polar helimagnet Ni$_2$InSbO$_6$
Creators: name: Araki, Yusuke
name: Sato, Tatsuki
name: Fujima, Yuri
name: Abe, Nobuyuki
name: Tokunaga, Masashi
name: Kimura, Shojiro
name: Morikawa, Daisuke
name: Ukleev, Victor
name: Yamasaki, Yuichi
name: Tabata, Chihiro
name: Nakao, Hironori
name: Murakami, Youichi
name: Sagayama, Hajime
name: Ohishi, Kazuki
name: Tokunaga, Yusuke
name: Arima, Taka-hisa
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic-field effect on the magnetic and electric properties in a chiral polar ordered corundum Ni$_2$InSbO$_6$ has been investigated. Single-crystal soft x-ray and neutron diffraction measurements confirm long-wavelength magnetic modulation. The modulation direction tends to align along the magnetic field applied perpendicular to the polar axis, suggesting that the nearly proper-screw type helicoid should be formed below 77\,K. The application of a high magnetic field causes a metamagnetic transition. In a magnetic field applied perpendicular to the polar axis, a helix-to-canted antiferromagnetic transition takes place through the intermediate soliton lattice type state. On the other hand, a magnetic field applied along the polar axis induces a first-order metamagnetic transition. These metamagnetic transitions accompany a change in the electric polarization along the polar axis.
Διερεύνηση της σχέσης που αναπτύσσεται μεταξύ της ετήσιας φαρμακευτικής δαπάνης που διενεργούν τα δημόσια νοσοκομεία για την χρονική περίοδο 2016-2019 και των λειτουργικών δεικτών που αυτά παρουσιάζουν κατά την ίδια χρονική περίοδο. Ανάλυση ερευνητικών δεδομένων με χρήση της Γλώσσας R
Creators: name: Μυλωνάς Αντώνιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Φαρμακευτική δαπάνη
Σύνολο εξετασθέντων ασθενών
R-language
γραμμική παλινδρόμηση
Pharmaceutical expenditure
Total examined patients
linear regression

description: Σκοπός της παρούσας διατριβής είναι μέσα από την χαρτογράφηση της ετήσιας φαρμακευτικής δαπάνης πολλών νοσοκομειακών μονάδων να προσδιοριστεί μαθηματικά η σχέση η οποία ενδεχομένως αναπτύσσεται μεταξύ των δαπανών αυτών και κάποιων εκ των λειτουργικών δεικτών των νοσοκομείων αυτών. Τα δεδομένα τα οποία θα συγκεντρωθούν και θα αναλυθούν θα αφορούν την ετήσια φαρμακευτική δαπάνη καθώς και μεγέθη λειτουργικών δεικτών όπως ο μέσος όρος ανεπτυγμένων κλινών από το σύνολο των δημόσιων νοσοκομείων για την περίοδο 01/01/2016 έως και 31/12/2019. Έτσι με τον τρόπο αυτό μέσα από τον προσδιορισμό του βαθμού συσχέτισης που αναπτύσσεται μεταξύ της ετήσιας φαρμακευτικής δαπάνης και κάποιων εκ των ανωτέρω λειτουργικών δεικτών των δημόσιων νοσοκομείων Θα μπορούν να προσδιοριστούν παρεμβάσεις οι οποίες θα μπορούν να πραγματοποιηθούν προς την κατεύθυνση του περαιτέρω εξορθολογισμού της φαρμακευτικής δαπάνης
description: The purpose of this dissertation is through the mapping of the annual pharmaceutical expenditure of many hospitals to determine mathematically the relationship that may develop between these costs and some of the operational indicators of these hospitals. The data that will be collected and analyzed will relate to the annual pharmaceutical expenditure as well as sizes of functional indicators such as the average number of beds developed by all public hospitals for the period 01/01/2016 to 31/12/2019. In this way, by determining the degree of correlation that develops between the annual pharmaceutical expenditure and some of the above functional indicators of public hospitals, it will be possible to identify interventions that can be carried out in the direction of further streamlining of pharmaceutical expenditure
Two New "Turn-off" Changing-look Active Galactic nuclei and Implication on "Partially Obscured" AGNs
Creators: name: Wang, J.
name: Xu, D. W.
name: Wang, Y.
name: Zhang, J. B.
name: Zheng, J.
name: Wei, J. Y.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We here report a spectroscopic identification of two new changing-look AGNs (CL-AGNs): SDSS\,J104705.16+544405.8 and SDSS\,J120447.91+170256.8 both with a "turn-off" type transition from type 1 to type 1.8/1.9. The identification is arrived by a follow-up spectroscopic observation of the five changing-look AGN (CL-AGN) candidates that are extracted from the sample recently released in Macleod et al. The candidates are extract by the authors from the Sloan Digit Sky Survey Data Release 7 spectroscopically confirmed quasars with large amplitude variability. By compiling a sample of 26 previously identified CL-AGNs, we confirm the claim in Macleod et al. that CL-AGNs tend to be biased against low Eddington ratio, and identify an overlap between the CL-AGNs at their dim state and the so-called intermediate-type AGNs. The overlap implies that there two populations of the intermediate-type AGNs with different origins. One is due to the torus orientation effect, and the another the intrinsic change of the accretion rate of the central supermassive blackholes.
description: 10 pages, 6 figures and 2 tables, accepted by ApJ
One-qubit fingerprinting schemes
Creators: name: de Beaudrap, J. Niel
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fingerprinting is a technique in communication complexity in which two parties (Alice and Bob) with large data sets send short messages to a third party (a referee), who attempts to compute some function of the larger data sets. For the equality function, the referee attempts to determine whether Alice's data and Bob's data are the same. In this paper, we consider the extreme scenario of performing fingerprinting where Alice and Bob both send either one bit (classically) or one qubit (in the quantum regime) messages to the referee for the equality problem. Restrictive bounds are demonstrated for the error probability of one-bit fingerprinting schemes, and show that it is easy to construct one-qubit fingerprinting schemes which can outperform any one-bit fingerprinting scheme. The author hopes that this analysis will provide results useful for performing physical experiments, which may help to advance implementations for more general quantum communication protocols.
description: 9 pages; Fixed some typos; changed order of bibliographical references
Trichotithonus conspectus Monne 1990
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Trichotithonus
Trichotithonus conspectus

description: 3. Trichotithonus conspectus Monné, 1990
Type locality — Brazil, Espírito Santo: Linhares (Parque Sooretama). (MNRJ). Distribution — Brazil (Espírito Santo, Rio de Janeiro).
 Trichotithonus conspectus Monné, 1990a: 254, fig. 2; Julio et al., 2000: 52 (holotype).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Unimodular Gauge in Perturbative Gravity and Supergravity
Creators: name: Baulieu, Laurent
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This paper explains the Unimodular gauge fixing of gravity and supergravity in the framework of a perturbative BRST construction. The unphysical sector contains additional BRST-exact quartets to suppress possible ambiguities and impose both the Unimodular gauge fixing condition on the metric and a gauge condition for the reparametrization symmetry of the unimodular part of the metric. The Unimodular gauge choice of the metric must be completed by a $γ$-Traceless gauge condition for the Rarita--Schwinger field in the case of supergravity. This gives an interesting new class of gauges for gravity and supergravity.
description: A section has been added that computes the the spin connection in the unimodular gauge for a better understanding of gravitational couplings of spinors in this gauge
EPOS-NL: How to publish earth science data in the Netherlands
Creators: name: Wessels, Richard
name: Armstrong, Lora
name: Brunst, Vincent
name: Clare, Connie
name: Lange, Otto
Publisher: name: Zenodo
Year: 2021
Subjects: EPOS-NL, FAIR data, data publication, 4TU.ResearchData, Yoda, earth science data

description: A presentation from the NAC (Nederlands Aardwetenschappelijk Congres/Netherlands Earth Sciences Conference) given on 9 April 2021, explaining how the EPOS-NL project is working with data repositories at Utrecht University and Delft University of Technology to publish FAIR earth science data in the Netherlands.
description: The EPOS-NL project is funded by the Dutch Research Council (NWO)
Η Αστυνομική Παγίδευση σε Εγκλήματα Ναρκωτικών
Creators: name: Σπανός, Απόστολος-Παναγιώτης Αναστασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Αστυνομική παγίδευση
Εγκλήματα ναρκωτικών
Ευρωπαϊκό Δικαστήριο Δικαιωμάτων του Ανθρώπου
Police entrapment
Drug crimes
European Court of Human Rights

description: Σκοπός της διπλωματικής εργασίας είναι η ενδελεχής παρουσίαση της ειδικής ανακριτικής πράξης της αστυνομικής παγίδευσης ή αλλιώς ανακριτικής διείσδυσης όπως αυτή παρουσιάζεται τόσο στα πλαίσια του Κώδικα Ποινικής Δικονομίας και ειδικότερα στο άρθρο 254 όσο και στον Νόμο περί εξαρτησιογόνων ουσιών (Ν. 4139/2013) και πιο συγκεκριμένα στο άρθρο 28. Ο κύριος άξονας της μελέτης περιστρέφεται γύρω από τα βασικά στοιχεία τα οποία θεμελιώνουν την έννοια της ως άνω ειδικής ανακριτικής πράξης, καθώς και τις επιμέρους προϋποθέσεις οι οποίες θα πρέπει να πληρούνται προκειμένου οι εν λόγω πράξεις να λαμβάνουν χώρα υπό το μανδύα της νομιμότητας και της νομικής κάλυψης από τις σχετικές διατάξεις. Στη συγκεκριμένη εργασία, δίνεται έμφαση στις περιπτώσεις όπου πραγματοποιείται υπέρβαση των ορίων που τάσσονται για τη διενέργεια της αστυνομικής παγίδευσης από τα αρμόδια όργανα τα οποία καταλήγουν να διαπράττουν το έγκλημα του προβοκάτορα ηθικού αυτουργού «agent provocateur» του άρθρου 46 παρ. 2 του Ποινικού Κώδικα. Τέλος, τεράστιο νομικό ενδιαφέρον εντοπίζεται τόσο στη νομολογία του Ευρωπαϊκού Δικαστηρίου Δικαιωμάτων του Ανθρώπου (ΕΔΔΑ), του Αρείου Πάγου αλλά και του Ανωτάτου Δικαστηρίου των Η.Π.Α. αναφορικά με υποθέσεις ανακριτικής διείσδυσης επί εγκλημάτων ναρκωτικών οι οποίες κινήθηκαν στα όρια μεταξύ νομιμότητας και παρανομίας.
description: The purpose of this master thesis is to present the special investigative act of police entrapment or otherwise of investigative penetration as presented both in the framework of the Code of Criminal Procedure in Article 254 and in the Law on Addictive Substances (Law 4139/2013) and more specifically in Article 28. The main axis of the study revolves around the basic elements underlying the concept of that specific investigative act and the individual conditions which must be met in order for those acts to take place under the cloak of legality and legal coverage under the relevant provisions. In this work, emphasis is placed on cases where the limits laid down for the conduct of police entrapment by the competent bodies which end up committing the crime of the ‘agent provocateur’ in Article 46 (2) Penal Code. Finally, there is a huge legal interest in both the case law of the European Court of Human Rights (ECHR), of the Supreme Civil and Criminal Court of Greece (Areios Pagos) and also of the Supreme Court of the United States in cases of investigative penetration in drug crimes which have been drawn to the boundary between legality and illegality.
description: Σε συνεργασία με: Πανεπιστήμιο Λευκωσίας (Κύπρος)
Description of proton-rich nuclei in the $A \sim 20$ region with the Gamow shell model
Creators: name: Michel, Nicolas
name: Li, Jian Guo
name: Xu, Fu Rong
name: Zuo, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Gamow shell model is utilized to describe nuclear observables of the weakly bound and resonance isotonic states of $^{16}$O at proton drip-line. It is hereby shown that the presence of continuum coupling leads to complex Coulomb contributions in the spectrum of these isotones. The necessity to include the effects of three-body forces, either by a direct calculation or by adding an $A$-dependence to the nucleon-nucleon interaction, already noticed in other theoretical models, is pointed out. It is also demonstrated that our approach is predictive for reaction observables.
description: 12 pages, 10 figures
A search for Centaurus A-like features in the spectra of Fermi-LAT detected radio galaxies
Creators: name: Rulten, Cameron B.
name: Brown, Anthony M.
name: Chadwick, Paula M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Motivated by the detection of a hardening in the gamma-ray spectrum of the radio galaxy Centaurus A, we have analysed ~10 years of Fermi-LAT observations of 26 radio galaxies to search for similar spectral features. We find that the majority of the radio galaxies' gamma-ray spectral energy distributions are best fitted with a simple power-law model, and no spectral hardening similar to that found in Centaurus A was detected. We show that, had there been any such spectral features present in our sample of radio galaxies, they would have been seen, but note that 7 of the radio galaxies (3C 111, 3C 120, 3C 264, IC 4516, NGC 1218, NGC 2892 and PKS 0625-35) show evidence for flux variability on 6-month timescales, which makes the detection of any steady spectral features difficult. We find a strong positive correlation (r = 0.9) between the core radio power at 5 GHz and the gamma-ray luminosity and, using a simple extrapolation to TeV energies, we expect around half of the radio galaxies studied will be detectable with the forthcoming Cherenkov Telescope Array.
Supergravity brane worlds and tachyon potentials
Creators: name: Bazeia, D.
name: Brito, F. A.
name: Nascimento, J. R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study massless and massive graviton modes that bind on thick branes which are supergravity domain walls solutions in $D$-dimensional supergravity theories where only the supergravity multiplet and the scalar supermultiplet are turned on. The domain walls are bulk solutions provided by tachyon potentials. Such domain walls are regarded as BPS branes of one lower dimension that are formed due to tachyon potentials on a non-BPS D-brane.
description: RevTex4, 6 pages; version to appear in Phys. Rev. D
Mergers of binary stars: The ultimate heavy-ion experience
Creators: name: Prakash, Madappa
name: Ratkovic, Sasa
name: Lattimer, James M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The mergers of black hole-neutron star binaries are calcuated using a pseudo-general relativistic potential that incorporates ${\mathcal O}(v^2/c^2)^3$ post-Newtonian corrections. Both normal matter neutron stars and self-bound strange quark matter stars are considered as black hole partners. As long as the neutron stars are not too massive relative to the black hole mass, orbital decay terminates in stable mass transfer rather than an actual merger. For a normal neutron star, mass transfer results in a widening of the orbit but the stable transfer ends before the minimum neutron star mass is reached. For a strange star, mass transfer does not result in an appreciable enlargement of the orbital separation, and the stable transfer continues until the strange star essentially disappears. These differences might be observable through their respective gravitational wave signatures.
description: Contribution to QM04 proceedings. Submitted to Journal of Physics G
Η τέχνη «αρχαιολογίζει». Προσεγγίσεις μέσα από το έργο του Ευθύμη Θέου
Creators: name: Μίμη, Ιωάννα Στέργιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Τέχνη
Αρχαιολογία
Ευθύμης Θέου
Art
Archaeology
Efthimis Theou

description: Η παρούσα εργασία συζητά και σχολιάζει την συμβιωτική σχέση της τέχνης με την αρχαιολογία, φτάνοντας στην σύγχρονη τέχνη και την performance. Αντικείμενο της εργασίας είναι ο εντοπισμός της αρχαιολογίας (αρχαιολογική θεωρία, μεθοδολογία, ανασκαφική πρακτική, αρχαιολογική εθνογραφία) στον πυρήνα της εικαστική δημιουργίας Στόχος της εργασίας είναι να συμβάλλει στην εξέλιξη της έρευνας στην τέχνη, νέων θεωριών και πρακτικών και ίσως και «τάσεων» στην ιστορία της τέχνης. Παράλληλα, στόχο αποτελεί η ανάδειξη της δημιουργικής διαδικασίας ενός έργου, ως αναπόσπαστο κόμματι του τελικού καλλιτεχνικού έργου και εξίσου σημαντικό για την εξερεύνηση της ενσωμάτωσης αρχαιολογικών πρακτικών στον πυρήνα της εικαστική δημιουργίας. Σκοπός είναι η δημιουργία μίας βάσης για τους καλλιτέχνες ώστε να συμβάλουν σε αυτή την συζήτηση και επιπροσθέτως η διάκριση βαθύτερων συγγενειών και συνεργειών μεταξύ των δύο κλάδων. Όλα αυτά θα αναδειχθούν στο καλλιτεχνικό έργο του Έλληνα καλλιτέχνη Ευθύμη Θέου και συγκεκριμένα στις 3 site-specific performance του: Καλαυρεία (2009), στην αρχαιολογική θέση του Ιερού του Ποσειδώνα στον Πόρο, Το Γεύμα (2011) στην Κουτρουλού Μαγούλα στην Θεσσαλία και η performance Γαύδος: Το σπίτι (2012) στην αρχαιολογική θέση Καταλύματα της Γαύδου. Από την παρουσίαση και ανάλυση του καλλιτεχνικού έργου του Ευθύμη Θέου διαπιστώνονται κάποιες συγκεκριμένες αρχαιολογικές πρακτικές που διαπερνούν όλο του έργο.
description: This thesis discusses and comments on the symbiotic relationship of art practice and archeology, reaching to contemporary art and performance. The object of this thesis is to place archeology (archaeological theory, methodology, excavation practice, archaeological ethnography) at the core of artistic practice. The aim of this work is to contribute to the development of research in art, new theories, and practices and perhaps "trends" in history of art. At the same time, the goal is to highlight the creative process of a work, as an integral part of the final work of art and equally important for exploring the integration of archaeological practices in the core of artistic creation. Moreover, to create a basis for artists, where they could contribute to this discussion and to distinguish deeper affinities and synergies between the two disciplines. All these will be highlighted in the artistic work of the Greek artist Efthymis Theou and specifically in his 3 site-specific performances: Kalavreia (2009), at the archeological site of the Sanctuary of Poseidon in Poros, The Meal (2011) in Koutroulou Magoula in Thessaly and the performance Gavdos: The house (2012) at the archeological site Katalymata in Gavdos. From the presentation and analysis of the artistic work of Efthymis Theos, some specific archaeological practices can be identified that permeate his entire work.
description: Σε συνεργασία με: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Joint constraint on primordial gravitational waves and polarization rotation angle with current CMB polarization data
Creators: name: Zhai, Hua
name: Li, Si-Yu
name: Li, Mingzhe
name: Zhang, Xinmin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Cosmological CPT violation will rotate the polarized direction of CMB photons, convert partial CMB E mode into B mode and vice versa. It will generate non-zero EB, TB spectra and change the EE, BB, TE spectra. This phenomenon gives us a way to detect the CPT-violation signature from CMB observations, and also provides a new mechanism to produce B mode polarization. In this paper, we perform a global analysis on tensor-to-scalar ratio $r$ and polarization rotation angles based on current CMB datasets with both low $\ell$ (Planck, BICEP2/Keck Array) and high $\ell$ (POLARBEAR, SPTpol, ACTPol). Benefited from the high precision of CMB data, we obtain the isotropic rotation angle $\barα = -0.01^\circ \pm 0.37^\circ $ at 68% C.L., the variance of the anisotropic rotation angles $C^α(0)<0.0032\,\mathrm{rad}^2$, the scale invariant power spectrum $D^{αα}_{\ell \in [2, 350]}<4.71\times 10^{-5} \,\mathrm{rad}^2$ and $r<0.057$ at 95% C.L.. Our result shows that with the polarization rotation effect, the 95% upper limit on $r$ gets tightened by 17%.
description: 8 pages, 2 figures
title: La forma de vida del romance em México y su vigencia
Creators: name: Gómez del Campo, Mercedes Zavala
Publisher: name: IELT - Instituto de Estudos de Literatura e Tradição, NOVA FCSH
Year: 2020

description: A partir de la revisión de un corpus de romances, recogidos recientemente de la tradición oral en una región del centro-norte de México, marco cuáles son las características generales de este género en el contexto del siglo XXI y las comparo con recopilaciones hechas hacia finales de los años setenta y en una encuesta que realicé en la misma región a finales del siglo veinte. Qué romances están vigentes, cómo viven y cómo los estudiamos en el país.
description: Gómez del Campo, Mercedes Zavala (2020), “La forma de vida del romance em México y su vigencia” in Boto, Sandra; Cid, Jesús Antonio e Ferré, Pere (coords.), 'Viejos son, pero no cansan'. Novos Estudos sobre e o Romanceiro, Coimbra - Madrid, Fundación Ramón Menéndez Pidal, Instituto Universitario “Seminario Menéndez Pidal”, Centro de Investigação em Artes e Comunicação, Centro de Literatura Portuguesa e Instituto de Estudos de Literatura e Tradição. ISBN da versão digital: 978-989-8968-06-7
title: El romance La hermana avarienta en la tradición oral de Cantabria
title: del intercambio simétrico a la insolidaridad social estructural
titleType: Subtitle
Creators: name: Valiente Barroso, Beatriz
Publisher: name: IELT - Instituto de Estudos de Literatura e Tradição, NOVA FCSH
Year: 2020

description: El objetivo de este artículo es el análisis socio-histórico del romance La hermana avarienta (IGR: 0374) en Cantabria.
description: Valiente Barroso, Beatriz (2020), “El romance La hermana avarienta en la tradición oral de Cantabria: del intercambio simétrico a la insolidaridad social estructural” in Boto, Sandra; Cid, Jesús Antonio e Ferré, Pere (coords.), 'Viejos son, pero no cansan'. Novos Estudos sobre e o Romanceiro, Coimbra - Madrid, Fundación Ramón Menéndez Pidal, Instituto Universitario “Seminario Menéndez Pidal”, Centro de Investigação em Artes e Comunicação, Centro de Literatura Portuguesa e Instituto de Estudos de Literatura e Tradição. ISBN 978-989-8968-06-7
Effect of back reaction on entanglement and subregion volume complexity in strongly coupled plasma
Creators: name: Chakrabortty, Shankhadeep
name: Pant, Sanjay
name: Sil, Karunava
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The back reaction imparted by a uniform distribution of heavy static fundamental quarks on large $N_c$ strongly coupled gauge theory can be holographically realized as a deformation in $AdS$ blackhole background. The presence of back reaction brings significant changes in to the entanglement structure of the strongly coupled boundary theory at finite temperature. Since the deformed blackhole geometry still remains asymptotically $AdS$, the $gauge/gravity$ duality allows us to explore the entanglement structure of back reacted plasma in a quantitative way by computing various measures, e.g holographic entanglement entropy (HEE) and entanglement wedge cross section (EWCS). We explicitly study the variation of those entanglement measures with respect to the uniform density of heavy static fundamental quarks present in the boundary theory. In particular, we notice enhancement of both HEE and EWCS with respect to quark density. We also study the effect of back reaction on the holographic subregion volume complexity. In this analysis we observe an occurrence of logarithmic divergence proportional to the quark density parameter.
description: 33 pages, 8 figures
Is Requirements Similarity a Good Proxy for Software Similarity? An Empirical Investigation in Industry (additional material)
Creators: name: Abbas, Muhammad
name: Ferrari, Alessio
name: Shatnawi, Anas
name: Enoiu, Eduard Paul
name: Saadatmand, Mehrdad
Publisher: name: Zenodo
Year: 2020
Subjects: Requirements Similarity
Software Similarity
Correlation

description: This package includes additional data for the paper: Abbas M., Ferrari A., Shatnawi A., Enoiu E.P., Saadatmand M. (2021) Is Requirements Similarity a Good Proxy for Software Similarity? An Empirical Investigation in Industry. In: Dalpiaz F., Spoletini P. (eds) Requirements Engineering: Foundation for Software Quality. REFSQ 2021. Lecture Notes in Computer Science, vol 12685. Springer, Cham. https://doi.org/10.1007/978-3-030-73128-1_1
 The paper explores the relationship between requirements similarity and software similarity. The current package consists of the following content: CPDataJP.xlsx is a spreadsheet with similarity values between industrial requirements and their software. rscript.R is R script for correlation analysis on the data.
Variedades locales de maíz en comunidades CH’oles de Tacotalpa, Tabasco
Creators: name: Valenzuela, Guadalupe Morales
Publisher: name: figshare
Year: 2020
Subjects: subject: 70108 Sustainable Agricultural Development
subject: FOS: Other agricultural sciences

description: Describe 11 variedades de maíz de comunidades indígenas.
Point contact spectroscopy of the electron-doped cuprate superconductor Pr{2-x}Ce{x}CuO4: The dependence of conductance-voltage spectra on cerium doping, barrier strength and magnetic field
Creators: name: Qazilbash, M. M.
name: Biswas, Amlan
name: Dagan, Y.
name: Ott, R. A.
name: Greene, R. L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present conductance-voltage (G-V) data for point contact junctions between a normal metal and the electron doped cuprate superconductor Pr{2-x}Ce{x}CuO4 (PCCO). We observe a zero bias conductance peak (ZBCP) for the under-doped composition of this cuprate (x=0.13) which is consistent with d-wave pairing symmetry. For optimally-doped (x=0.15) and over-doped (x=0.17) PCCO, we find that the G-V characteristics indicate the presence of an order parameter without nodes. We investigate this further by obtaining point contact spectroscopy data for different barrier strengths and as a function of magnetic field.
description: 13 pages, 9 figures
Ανάπτυξη οντολογίας για ERP συστήματα
Creators: name: Ράπτης, Δημήτριος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Συστήματα ERP
Οντολογία
Σημασιολογικός Ιστός
ERP systems
Ontology
Protégé

description: Η παρούσα διπλωματική εργασία εκπονήθηκε στα πλαίσια Μεταπτυχιακών Σπουδών στη Διοίκηση Επιχειρήσεων & Πληροφοριακά Συστήματα του Διατμηματικού Προγράμματος Μεταπτυχιακών Σπουδών του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης. Διαπραγματεύεται την ανάπτυξη οντολογίας στο πρόγραμμα Protégé η οποία αφορά την απεικόνιση ενός πληροφοριακού συστήματος ERP. Στην εποχή που ζούμε, η τεχνολογία εξελίσσεται με ταχείς ρυθμούς με αποτέλεσμα να διεισδύει όλο και περισσότερο στη ζωή μας. Οι υπολογιστές μπορούν να επεξεργάζονται πολύ γρήγορα και με μεγάλη ακρίβεια τεράστιο όγκο δεδομένων. Η ιδιότητά τους αυτή τους καθιστά όλο και πιο απαραίτητους σε βασικούς τομείς όπως: στις επιστήμες, στην εκπαίδευση, στις συγκοινωνίες, στα διάφορα επαγγέλματα και άλλα. Ο Σημασιολογικός Ιστός, αποτελεί την εξέλιξη του Παγκόσμιου Ιστού και τη νέα γενιά του Διαδικτύου, έχοντας ως αποτέλεσμα την καλύτερη αναζήτηση, επεξεργασία και ενοποίηση των δεδομένων. Επιπροσθέτως, οι οντολογίες αποτελούν τα σημαντικότερα εργαλεία στην αναπαράσταση και διαχείριση της γνώσης στο Σημασιολογικό Ιστό, επιτρέποντας τον διαμοιρασμό των πληροφοριών. Το αντικείμενο της παρούσας εργασίας είναι αρχικά η μελέτη και ανασκόπηση των παραπάνω αντικειμένων και στη συνέχεια ακολούθησε η ανάπτυξη οντολογίας για το Τμήμα Σπουδών του Αριστοτελείου Πανεπιστημίου Θεσσαλονίκης. Το θέμα της οντολογίας αφορά την απεικόνιση ενός συστήματος ERP στο σύστημα Protégé OWL.
description: Nowadays, technology is being developed rapidly and as a result it intrudes more and more into our lives. Computers can process huge amount of data very fast and precisely. This characteristic makes them even more necessary in fields as: science, education, transportation, business etc. Semantic Web is an extension of the current World Wide Web, leading to better (more accurate) searching, processing and integration of data. Knowledge Management plays an important role at the above tasks. Concerning the transition from the industrial society to the knowledge and information society, the role of knowledge is known as the most important strategic business resource. Ontologies are the most important means of representing and managing knowledge in Semantic Web, allowing the sharing and common understanding of information. The aim of this thesis is to initially study and review the above topics and then to develop an ontology for the Department of Studies of the Aristotle University of Thessaloniki. In order to represent the knowledge in a formal, structured and reusable form, the ontology has been developed in the Web Ontology Language OWL using the Protégé ontology editor. The creation of the above ontology aims to represent an ontology for ERP systems.
Identifying Earth-impacting asteroids using an artificial neural network
Creators: name: Hefele, John D.
name: Bortolussi, Francesco
name: Zwart, Simon Portegies
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: By means of a fully connected artificial neural network, we identified asteroids with the potential to impact Earth. The resulting instrument, named the Hazardous Object Identifier (HOI), was trained on the basis of an artificial set of known impactors which were generated by launching objects from Earth's surface and integrating them backward in time. HOI was able to identify 95.25% of the known impactors simulated that were present in the test set as potential impactors. In addition, HOI was able to identify 90.99% of the potentially hazardous objects identified by NASA, without being trained on them directly.
Efficient collinear third-harmonic generation in a single two-dimensional nonlinear photonic crystal
Creators: name: Karaulanov, Todor
name: Saltiel, Solomon M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose novel multi-phase-matched process that starts with generation of a pair of symmetric second-harmonic waves. Each of them interacts again with the fundamental wave to produce two constructively interfering third harmonic waves collinear to the fundamental input wave.
description: Summary of presentation at the IQEC/LAT-2002 conference
Global geometry of the 2+1 rotating black hole
Creators: name: Bieliavsky, P.
name: Detournay, S.
name: Herquet, M.
name: Rooman, M.
name: Spindel, Ph.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The generic rotating BTZ black hole, obtained by identifications in AdS3 space through a discrete subgroup of its isometry group, is investigated within a Lie theoretical context. This space is found to admit a foliation by two-dimensional leaves, orbits of a two-parameter subgroup of SL(2,R) and invariant under the BTZ identification subgroup. A global expression for the metric is derived, allowing a better understanding of the causal structure of the black hole.
description: 9 pages, 1 figure
XMM-Newton spectra of hard spectrum Rosat AGN: X-ray absorption and optical reddening
Creators: name: Carrera, F. J.
name: Page, M. J.
name: Mittaz, J. P. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the XMM-Newton spectra of three low-redshift intermediate Seyferts (one Sy1.5, and two Sy1.8), from our survey of hard spectrum Rosat sources. The three AGN are well fitted by absorbed powerlaws, with intrinsic nuclear photoelectric absorption from column densities between 1.3 and 4.0e21 cm-2. In the brightest object the X-ray spectrum is good enough to show that the absorber is not significantly ionized. For all three objects the powerlaw slopes appear to be somewhat flatter (Gamma~1.3-1.6) than those found in typical unabsorbed Seyferts. The constraints from optical and X-ray emission lines imply that all three objects are Compton-thin. For the two fainter objects, the reddening deduced from the optical broad emission lines in one of them, and the optical continuum in the other, are similar to those expected from the X-ray absorption, if we assume a Galactic gas-to-dust ratio and reddening curve. The broad line region Balmer decrement of our brightest object is larger than expected from its X-ray absorption, which can be explained either by an intrinsic Balmer decrement with standard gas-to-dust ratio, or by a >Galactic gas-to-dust ratio. These >=Galactic ratios of extinction to photoelectric absorption cannot extend to the high redshift, high luminosity, broad line AGN in our sample, because they have column densities >1e22 cm-2, and so their broad line regions would be totally obscured. This means that some effect (e.g., luminosity dependence, or evolution) needs to be present in order to explain the whole population of absorbed AGN.
description: LaTeX, 10 pages and 7 figures, A&A accepted
title: Antibiotics in mycobacteria-macrophage system and its consequences at both microorganism and host cell level
Creators: name: Dos Santos Olivera, Renato Antonio
Publisher: name: The Open University
Year: 2010

description: To select potentially therapeutic anti-mycobacterial agents, 9 compounds were screened on the basis of their capacity to arrest M. avium growth in liquid broth. Out of the 8 compounds that proved suitable, 2 were singled out upon evaluation of their apoptotic/necrotic effects on THP-1 macrophage-like cells. One of them controlled poorly M. avium intra-macrophage growth and showed deleterious effects on some function parameters of resting and activated host cells that led to its elimination as a potential antibiotic. The remaining compound was the substituted hydroxy-naphthoquinone lapachol, a natural product from a South American tree bark. Lapachol was bacteriostatic toward M. avium, did not induce apoptosis or necrosis of THP-1 macrophages at ≤ 32 μg/mL (132 pM) and arrested the intra-macrophage growth of M. avium at the lower dose of 16 μg/mL (66 pM). The study of the effects of lapachol on the expression of function parameters and cytokine secretion by THP-1 macrophages showed that it immunomodulated resting and TLR2-agonised human macrophage functions, some of which can lead to improved host cell responses to infection. Favourable effects were increases in IFNɣR1 and MHCII surface expression and a marked inhibition of IL-10 secretion. The up-regulation of IFNɣRl and MHCII can potentially improve the capacity to respond to IFNɣ and present antigens, respectively. The inhibition of IL-10 secretion would prevent macrophage de-activation, improving the capacity of macrophages to control the intracellular growth of M. avium. Lapachol did not affect important aspects of host cell function such as ER or oxidative stress and TLR2 agonism-induced capacity to produce oxygen and nitrogen metabolites and secrete TNF-α. The drug resulted in a reduction of IL-1β and TNF-α secretion only from resting and IFN-ɣ-treated cells, and in a decrease in latex bead and M. avium internalization. A proteomic approach to study the influence of lapachol on the expression of proteins modulated by IFN-ɣ or TLR2 agonism showed important reductions in the expression levels of three proteases, the ER protein DnaJ homolog that forms part of complexes together with grp78 regulates grp78 activity and two cytoskeletal proteins, L-plastin and fascin. The down-regulation of these cytoskeletal proteins could hypothetically affect cell migration and phagocytosis. Lapachol treatment resulted in important increases in cytosolic protein disulfide isomerase A3 (ERp57), thought to be involved in Stat3 complexing and in disulfide bond cleavages coupled to protein degradation, and glucose-6-P-dehydrogenase, involved in NADPH generation and, as a consequence, in the protection against damage by hydrogen peroxide. The results obtained during this work suggest the convenience of in vivo experiments to further test lapachol regarding its potential as a new anti-mycobacterial agent and immunomodulator.
Algorithm and performance of a clinical IMRT beam-angle optimization system
Creators: name: Djajaputra, David
name: Wu, Qiuwen
name: Wu, Yan
name: Mohan, Radhe
Publisher: name: arXiv
Year: 2003
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: This paper describes the algorithm and examines the performance of an IMRT beam-angle optimization (BAO) system. In this algorithm successive sets of beam angles are selected from a set of predefined directions using a fast simulated annealing (FSA) algorithm. An IMRT beam-profile optimization is performed on each generated set of beams. The IMRT optimization is accelerated by using a fast dose calculation method that utilizes a precomputed dose kernel. A compact kernel is constructed for each of the predefined beams prior to starting the FSA algorithm. The IMRT optimizations during the BAO are then performed using these kernels in a fast dose calculation engine. This technique allows the IMRT optimization to be performed more than two orders of magnitude faster than a similar optimization that uses a convolution dose calculation engine.
description: Final version that appeared in Phys. Med. Biol. 48 (2003) 3191-3212. Original EPS figures have been converted to PNG files due to size limit
Sistemas de gestión energética de empresas mediante tecnología BIM
Creators: name: Paredes, J. M., Serrano, J., Montalbán, F., Paredes, S. & Lorenz, S. (2020). BIM4ENERGY
Publisher: name: Zenodo
Year: 2021

description: Informe de Vigilancia Tecnológica sobre Sistemas de gestión energética de empresas mediante tecnología BIM
Superconductivity and the high field ordered phase in the heavy fermion compound PrOs$_4$Sb$_{12}$
Creators: name: Maple, M. B.
name: Ho, P. -C.
name: Frederick, N. A.
name: Zapf, V. S.
name: Yuhasz, W. M.
name: Bauer, E. D.
name: Christianson, A. D.
name: Lacerda, A. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Superconductivity is observed in the filled skutterudite compound \PrOsSb{} below a critical temperature temperature $T_\mathrm{c} = 1.85$ K and appears to develop out of a nonmagnetic heavy Fermi liquid with an effective mass $m^{*} \approx 50 m_\mathrm{e}$, where $m_\mathrm{e}$ is the free electron mass. Features associated with a cubic crystalline electric field are present in magnetic susceptibility, specific heat, electrical resistivity, and inelastic neutron scattering measurements, yielding a Pr$^{3+}$ energy level scheme consisting of a $Γ_{3}$ nonmagnetic doublet ground state, a low lying $Γ_{5}$ triplet excitied state at $\sim 10$ K, and much higher temperature $Γ_{4}$ triplet and $Γ_{1}$ singlet excited states. Measurements also indicate that the superconducting state is unconventional and consists of two distinct superconducting phases. At high fields and low temperatures, an ordered phase of magnetic or quadrupolar origin is observed, suggesting that the superconductivity may occur in the vicinity of a magnetic or quadrupolar quantum critical point.
description: 11 pages, 4 figures, presented at the 3rd international symposium on Advance Science Research (ASR 2002), JAERI Tokai, Ibaraki, Japan