cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How RL Agents Behave When Their Actions Are Modified
Creators: name: Langlois, Eric D.
name: Everitt, Tom
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Reinforcement learning in complex environments may require supervision to prevent the agent from attempting dangerous actions. As a result of supervisor intervention, the executed action may differ from the action specified by the policy. How does this affect learning? We present the Modified-Action Markov Decision Process, an extension of the MDP model that allows actions to differ from the policy. We analyze the asymptotic behaviours of common reinforcement learning algorithms in this setting and show that they adapt in different ways: some completely ignore modifications while others go to various lengths in trying to avoid action modifications that decrease reward. By choosing the right algorithm, developers can prevent their agents from learning to circumvent interruptions or constraints, and better control agent responses to other kinds of action modification, like self-damage.
description: 10 pages (+6 appendix); 7 figures. Published in the AAAI 2021 Conference on AI. Code is available at https://github.com/edlanglois/mamdp
Proper Value Equivalence
Creators: name: Grimm, Christopher
name: Barreto, André
name: Farquhar, Gregory
name: Silver, David
name: Singh, Satinder
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: One of the main challenges in model-based reinforcement learning (RL) is to decide which aspects of the environment should be modeled. The value-equivalence (VE) principle proposes a simple answer to this question: a model should capture the aspects of the environment that are relevant for value-based planning. Technically, VE distinguishes models based on a set of policies and a set of functions: a model is said to be VE to the environment if the Bellman operators it induces for the policies yield the correct result when applied to the functions. As the number of policies and functions increase, the set of VE models shrinks, eventually collapsing to a single point corresponding to a perfect model. A fundamental question underlying the VE principle is thus how to select the smallest sets of policies and functions that are sufficient for planning. In this paper we take an important step towards answering this question. We start by generalizing the concept of VE to order-$k$ counterparts defined with respect to $k$ applications of the Bellman operator. This leads to a family of VE classes that increase in size as $k \rightarrow \infty$. In the limit, all functions become value functions, and we have a special instantiation of VE which we call proper VE or simply PVE. Unlike VE, the PVE class may contain multiple models even in the limit when all value functions are used. Crucially, all these models are sufficient for planning, meaning that they will yield an optimal policy despite the fact that they may ignore many aspects of the environment. We construct a loss function for learning PVE models and argue that popular algorithms such as MuZero can be understood as minimizing an upper bound for this loss. We leverage this connection to propose a modification to MuZero and show that it can lead to improved performance in practice.
Additional file 2 of Dietary patterns and cardiorespiratory fitness in midlife and subsequent all-cause dementia: findings from the cooper center longitudinal study
Creators: name: Meernik, Clare
name: Eilat-Adar, Sigal
name: Leonard, David
name: Barlow, Carolyn E.
name: Gerber, Yariv
name: Tesler, Riki
name: Byker Shanks, Carmen
name: Pettee Gabriel, Kelley
name: Pavlovic, Andjelka
name: DeFina, Laura F.
name: Shuval, Kerem
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Mental Health

description: Supplementary Material 2
Enhancing Human-Machine Teaming for Medical Prognosis Through Neural Ordinary Differential Equations (NODEs)
Creators: name: Fompeyrine, D.
name: Vorm, E. S.
name: Ricka, N.
name: Rose, F.
name: Pellegrin, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Machine Learning (ML) has recently been demonstrated to rival expert-level human accuracy in prediction and detection tasks in a variety of domains, including medicine. Despite these impressive findings, however, a key barrier to the full realization of ML's potential in medical prognoses is technology acceptance. Recent efforts to produce explainable AI (XAI) have made progress in improving the interpretability of some ML models, but these efforts suffer from limitations intrinsic to their design: they work best at identifying why a system fails, but do poorly at explaining when and why a model's prediction is correct. We posit that the acceptability of ML predictions in expert domains is limited by two key factors: the machine's horizon of prediction that extends beyond human capability, and the inability for machine predictions to incorporate human intuition into their models. We propose the use of a novel ML architecture, Neural Ordinary Differential Equations (NODEs) to enhance human understanding and encourage acceptability. Our approach prioritizes human cognitive intuition at the center of the algorithm design, and offers a distribution of predictions rather than single outputs. We explain how this approach may significantly improve human-machine collaboration in prediction tasks in expert domains such as medical prognoses. We propose a model and demonstrate, by expanding a concrete example from the literature, how our model advances the vision of future hybrid Human-AI systems.
description: 13 pages, accepted for publication in HISI
The impact of 3D printing on the traditional supply chain: A quantitative analysis
Creators: name: Νικολαΐδης, Βασίλειος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Παραγωγή πρόσθετων υλών
Τρισδιάστατη εκτύπωση
Διαχείριση αλυσίδας εφοδιασμού
Additive manufacturing
3D printing
Supply chain management

description: As additive manufacturing (AM) evolves to become a common method of producing final parts, it will have the potential to significantly improve supply chain operations. The purpose of this thesis is to investigate the impact of adopting AM on supply chain. Three supply chain scenarios are investigated in this thesis, namely traditional supply chain, centralized AM-based supply chain and decentralized AM-based supply chain. Based on a cost model created in Excel spreadsheet, using data acquired from the existing literature and assumptions, this thesis compares three supply chain scenarios in terms of the optimal quantities and total costs under deterministic and stochastic demand. This thesis aims to explore whether the spare parts supply chain adopting AM technology is really superior to a traditional one, by comparing the total cost of each system
description: Καθώς η παραγωγή προσθέτων υλών εξελίσσεται για να γίνει μια κοινή μέθοδος παραγωγής τελικών εξαρτημάτων, θα έχει τη δυνατότητα να βελτιώσει σημαντικά τις διαδικασίες της αλυσίδας εφοδιασμού. Σκοπός αυτής της εργασίας είναι η διερεύνηση των επιπτώσεων της υιοθέτησης της παραγωγής προσθέτων υλών στην αλυσίδα εφοδιασμού. Σε αυτή τη διατριβή εξετάζονται τρία σενάρια εφοδιαστικής αλυσίδας, δηλαδή η παραδοσιακή αλυσίδα εφοδιασμού, η κεντρική αλυσίδα εφοδιασμού με βάση την παραγωγή προσθέτων υλών και η αποκεντρωμένη αλυσίδα εφοδιασμού με βάση την παραγωγή προσθέτων υλών. Με βάση ένα μοντέλο κόστους που δημιουργήθηκε στο υπολογιστικό φύλλο του Excel, χρησιμοποιώντας δεδομένα που έχουν αποκτηθεί από την υπάρχουσα βιβλιογραφία και υποθέσεις, η παρούσα διατριβή συγκρίνει τρία σενάρια εφοδιαστικής αλυσίδας όσον αφορά τις βέλτιστες ποσότητες και το συνολικό κόστος κάτω από την καθοριστική και στοχαστική ζήτηση. Η εργασία αυτή αποσκοπεί να διερευνήσει εάν η αλυσίδα εφοδιασμού ανταλλακτικών που υιοθετεί τεχνολογία παραγωγή προσθέτων υλών είναι πραγματικά ανώτερη από την παραδοσιακή, συγκρίνοντας το συνολικό κόστος κάθε συστήματος
GEASI: Geodesic-based Earliest Activation Sites Identification in cardiac models
Creators: name: Grandits, Thomas
name: Effland, Alexander
name: Pock, Thomas
name: Krause, Rolf
name: Plank, Gernot
name: Pezzuto, Simone
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 92B05, 35Q93, 65K10, 35F21, 35F20

description: The identification of the initial ventricular activation sequence is a critical step for the correct personalization of patient-specific cardiac models. In healthy conditions, the Purkinje network is the main source of the electrical activation, but under pathological conditions the so-called earliest activation sites (EASs) are possibly sparser and more localized. Yet, their number, location and timing may not be easily inferred from remote recordings, such as the epicardial activation or the 12-lead electrocardiogram (ECG), due to the underlying complexity of the model. In this work, we introduce GEASI (Geodesic-based Earliest Activation Sites Identification) as a novel approach to simultaneously identify all EASs. To this end, we start from the anisotropic eikonal equation modeling cardiac electrical activation and exploit its Hamilton--Jacobi formulation to minimize a given objective function, e.g. the quadratic mismatch to given activation measurements. This versatile approach can be extended to estimate the number of activation sites by means of the topological gradient, or fitting a given ECG. We conducted various experiments in 2D and 3D for in-silico models and an in-vivo intracardiac recording collected from a patient undergoing cardiac resynchronization therapy. The results demonstrate the clinical applicability of GEASI for potential future personalized models and clinical intervention.
description: 38 pages, 17 figures
Identical Meson Interferometry in STAR Experiment
Creators: name: Das, Debasish
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The influence of Bose-Einstein statistics on multi-particle production characterized for various systems and energies by the STAR collaboration provides interesting information about the space-time dynamics of relativistic heavy-ion collisions at RHIC. We present the centrality and transverse mass dependence measurements of the two-pion interferometry in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 62.4 GeV and Cu+Cu collisions at $\sqrt{s_{\rm{NN}}}$ = 62.4 GeV and 200 GeV. We compare the new data with previous STAR measurements from p+p, d+Au and Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 200 GeV. In all systems and centralities, HBT radii decrease with transverse mass in a similar manner, which is qualitatively consistent with collective flow.The scaling of the apparent freeze-out volume with the number of participants and charged particle multiplicity is studied. Measurements of Au+Au collisions at same centralities and different energies yield different freeze-out volumes, which mean that $N_{part}$ is not a suitable scaling variable. The multiplicity scaling of the measured HBT radii is found to be independent of colliding system and collision energy.
description: (for the STAR Collaboration) 6 pages and 5 figures Poster presented at 19th International Conference on Ultra-relativistic Nucleus-Nucleus Collisions: Quark Matter 2006 (QM 2006), Shanghai, China, 14-20 Nov. 2006. To be published in International Journal of Modern Physics E (World Scientific)
Έγκαιρη Ανίχνευση Ασθενειών από Χρονοσειρές με Εποχικότητα
Creators: name: Παπαδημητρίου, Ναταλία Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Βιοεπιτήρηση-Ξέσπασμα
Έγκαιρη Ανίχνευση Ασθενειών
Biosurveillance-Outbreak
Early Event Detection

description: Οι μεγάλες επιδημίες ασθενειών (H1N1, SARS, Ebola) αλλά και η απειλή βιοτρομοκρατικών επιθέσεων, κυρίως τα τελευταία 20 χρόνια, έκαναν επιτακτική την ανάγκη δημιουργίας συστημάτων, τα οποία θα ελέγχουν τα ιατρικά στοιχεία των πολιτών σε εθνικό και διεθνές επίπεδο. Ο έλεγχος αυτός περιλαμβάνει τη συλλογή δεδομένων, την ανάλυση και τη στατιστική επεξεργασία τους με αλγορίθμους που απαιτούν συνεχώς βελτίωση ώστε η ανίχνευση κάποιας επικείμενης φυσικής ή τεχνητής επιδημίας να πραγματοποιείται στον ελάχιστο δυνατό χρόνο. Στην παρούσα μελέτη, παρουσιάζεται η πορεία και η ανάπτυξη του τομέα της βιοεπιτήρησης, όπως επίσης και το πρόβλημα της έγκαιρης ανίχνευσης. Επίσης, περιγράφονται οι πιο σημαντικοί αλγόριθμοι που χρησιμοποιούνται ευρέως, νέες παραλλαγές τους, έρευνες για τη σύγκριση της απόδοσής τους, καθώς και τα μεγαλύτερα συστήματα βιοεπιτήρησης. Στο ερευνητικό μέρος, πραγματοποιήθηκε μελέτη σε πραγματικά ιατρικά δεδομένα με στόχο την εφαρμογή των παραπάνω αλγορίθμων και σύγκριση της αποτελεσματικότητάς τους. Αρχικά, η εφαρμογή έγινε σε δεδομένα χωρίς απαλοιφή της εποχικότητας για την ανίχνευση εποχικών εξάρσεων, ενώ στη συνέχεια με τροποποιήσεις στους αλγορίθμους επετεύχθη η εφαρμογή τους στα αρχικά δεδομένα με σκοπό την ανίχνευση επιδημικών ξεσπασμάτων πέρα των εποχικών, όπως είναι οι βιοτρομοκρατικές επιθέσεις
description: Major disease outbreaks (H1N1, SARS, Ebola) and the threat of bioterrorist attacks, especially over the last 20 years, have made it imperative to create systems that control the medical elements of citizens at national and international level. This test involves data collection, analysis and statistical processing with algorithms that require constant improvement so that the detection of an upcoming physical or technical epidemic event occurs within the minimum time possible. In the present study, the course and development of the biomedical sector, as well as the problem of early detection, are presented. It also describes the most important algorithms that are widely used, their new variants, surveys to compare their performance, and larger systems of biosurveillance. In the research part, a study on real medical data was carried out with the aim of applying the above algorithms and comparing their effectiveness. Initially, it was applied to data without seasonal erasure in order to detect seasonal exactions, and then with modifications to the algorithms, their application to the original data was achieved in order to detect outbreaks other than seasonal outbreaks, such as bioterrorist attacks
Ultrahigh energy storage density in epitaxial AlN/ScN superlattices
Creators: name: Jiang, Zhijun
name: Xu, Bin
name: Xiang, Hongjun
name: Bellaiche, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dielectric and antiferroelectric materials are particularly promising for high-power energy-storage applications. However, relatively low energy density greatly hinders their usage in storage technologies. Here, we report first-principles-based calculations predicting that epitaxial and initially non-polar AlN/ScN superlattices can achieve an ultrahigh energy density of up to 200 J/cm$^{\textrm{3}}$, accompanied by an ideal efficiency of 100%. We also show that high energy density requires the system being neither too close nor too far from a ferroelectric phase transition under zero electric field. A phenomenological model is further proposed to rationalize such striking features.
description: 6 pages, 2 figures
ปัจจัยที่มีความสัมพันธ์กับพฤติกรรมการดื่มสุราของผู้ถูกคุมความประพฤติ คดีเมาแล้วขับ
Creators: name: กัลลิกา ฉินวิรุฬห์ศิริทรัพย์
Publisher: name: สำนักวิทยบริการ มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตปัตตานี
Year: 2014
Subjects: การผูกมัด, การควบคุมตนเอง, พฤติกรรมการดื่มสุรา, Commitment, Self-control, Drunk driving offenders

description: 2, 25, วารสารวิทยบริการ มหาวิทยาลัยสงขลานครินทร์
Anisotropic cosmological models with spinor and scalar fields and viscous fluid in presence of a $Λ$ term: qualitative solutions
Creators: name: Saha, Bijan
name: Rikhvitsky, Victor
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The study of a self-consistent system of interacting spinor and scalar fields within the scope of a Bianchi type I (BI) gravitational field in presence of a viscous fluid and $Λ$ term has been carried out. The system of equations defining the evolution of the volume scale of BI universe, energy density and corresponding Hubble constant has been derived. The system in question has been thoroughly studied qualitatively. Corresponding solutions are graphically illustrated. The system in question is also studied from the view point of blow up. It has been shown that the blow up takes place only in presence of viscosity.
description: 18 pages, 14 figures, 12 Tables, section "Basic equations" has been rewritten
Why Kastner analysis does not apply to a modified Afshar experiment
Creators: name: Flores, Eduardo
name: Knoesel, Ernst
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In an analysis of the Afshar experiment R.E. Kastner points out that the selection system used in this experiment randomly separates the photons that go to the detectors, and therefore no which-way information is obtained. In this paper we present a modified but equivalent version of the Afshar experiment that does not contain a selection device. The double-slit is replaced by two separate coherent laser beams that overlap under a small angle. At the intersection of the beams an interference pattern can be inferred in a non-perturbative manner, which confirms the existence of a superposition state. In the far field the beams separate without the use of a lens system. Momentum conservation warranties that which-way information is preserved. We also propose an alternative sequence of Stern-Gerlach devices that represents a close analogue to the Afshar experimental set up.
description: one pdf-file, 15 pages, 5 figures
การพัฒนาดัชนีชี้วัดคุณภาพชีวิตการทำงานของตำรวจชั้นประทวนในสำนักงานกองบัญชาการตำรวจภูธรภาค 5
Creators: name: ชยกร มามุ่งปณิธาน
Publisher: name: สำนักวิทยบริการ มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตปัตตานี
Year: 2014
Subjects: ดัชนีชี้วัดคุณภาพชีวิตการทำงาน, ตำรวจชั้นประทวน, สำนักงานตำรวจภูธรภาค 5, Quality of work life indicators, Police non-commissioned officer, Headquator of Police region 5

description: 2, 25, วารสารวิทยบริการ มหาวิทยาลัยสงขลานครินทร์
Metastability as a mechanism for yielding in amorphous solids under cyclic shear
Creators: name: Mungan, Muhittin
name: Sastry, Srikanth
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the yielding behavior of amorphous solids under cyclic shear deformation and show that it can be mapped into a random walk in a confining potential with an absorbing boundary. The resulting dynamics is governed by the first passage time into the absorbing state and suffices to capture the essential qualitative features recently observed in atomistic simulations of amorphous solids. Our results provide insight into the mechanism underlying yielding and its robustness. When the possibility of activated escape from absorbing states is added, it leads to a unique determination of a threshold energy and yield strain, suggesting thereby an appealing approach to understanding fatigue failure.
description: Revised version, 6 pages, 2 figures and Supplemental Material as ancillary file
Modern Analysis Techniques for Spectroscopic Binaries
Creators: name: Hensberge, H.
name: Pavlovski, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Techniques to extract information from spectra of unresolved multi-component systems are revised, with emphasis on recent developments and practical aspects. We review the cross-correlation techniques developed to deal with such spectra, discuss the determination of the broadening function and compare techniques to reconstruct component spectra. The recent results obtained by separating or disentangling the component spectra is summarized. An evaluation is made of possible indeterminacies and random and systematic errors in the component spectra.
description: 12 pages, 3 figures, Invited talk to appear in the proceedings of IAU Symp. No. 240 'Binary Stars as Critical Tools and Tests in Contemporary Astrophysics' (Prague, 22-25 August 2006), Eds. W. Hartkopf, E. Guinan & P. Harmanec (Cambridge Univ. Press)
Using analog computers in today's largest computational challenges
Creators: name: Köppel, Sven
name: Ulmann, Bernd
name: Heimann, Lars
name: Killat, Dirk
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Emerging Technologies (cs.ET)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: C.4; G.1.8
subject: 65W35, 39A14

description: Analog computers can be revived as a feasible technology platform for low precision, energy efficient and fast computing. We justify this statement by measuring the performance of a modern analog computer and comparing it with that of traditional digital processors. General statements are made about the solution of ordinary and partial differential equations. Computational fluid dynamics are discussed as an example of large scale scientific computing applications. Several models are proposed which demonstrate the benefits of analog and digital-analog hybrid computing.
description: 12 pages, 2 figures, accepted paper towards a Special Issue of the open-access journal "Advances in Radio Science"
Neutrino Spectrum from SN 1987A and from Cosmic Supernovae
Creators: name: Yuksel, Hasan
name: Beacom, John F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The detection of neutrinos from SN 1987A by the Kamiokande-II and Irvine-Michigan-Brookhaven detectors provided the first glimpse of core collapse in a supernova, complementing the optical observations and confirming our basic understanding of the mechanism behind the explosion. One long-standing puzzle is that, when fitted with thermal spectra, the two independent detections do not seem to agree with either each other or typical theoretical expectations. We assess the compatibility of the two data sets in a model-independent way and show that they can be reconciled if one avoids any bias on the neutrino spectrum stemming from theoretical conjecture. We reconstruct the neutrino spectrum from SN 1987A directly from the data through non-parametric inferential statistical methods and present predictions for the Diffuse Supernova Neutrino Background based on SN 1987A data. We show that this prediction cannot be too small (especially in the 10-18 MeV range), since the majority of the detected events from SN 1987 were above 18 MeV (including 6 events above 35 MeV), suggesting an imminent detection in operational and planned detectors.
description: 9 pages, 4 figures; Matches version published in Phys. Rev. D
Τα κοστούμια στο σύγχρονο τσίρκο μέσα από παραστάσεις του Cirque du Soleil (α' μέρος)/ Αριάδνη, μια παράσταση τσίρκου (Β' μέρος)
Creators: name: Ντάνη, Δέσποινα Αριστοτέλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Τσίρκο
Αριάδνη
Κοστούμια
Circus
Ariadne
Costumes

description: Η παρούσα μεταπτυχιακή διπλωματική εργασία αποτελείται από δυο μέρη. Στο πρώτο μέρος που τιτλοφορείται «Τα κοστούμια στο Σύγχρονο Τσίρκο μέσα από παραστάσεις του Cirque du Soleil» μελετώνται κοστούμια από τρεις παραστάσεις του Cirque du Soleil, και συγκεκριμένα από τις παραστάσεις Ovo, Kurios και Varekai οι οποίες επιλέχθηκαν με βάση τα εντυπωσιακά κοστούμια και τις ειδικές κατασκευές που τις διακρίνουν. Αρχικά, η εργασία παρουσιάζει την ιστορία της εταιρίας του Cirque du Soleil και τις αλλαγές που χαρακτηρίζουν το σύγχρονο τσίρκο. Στη συνέχεια αναλύεται κάθε παράσταση χωριστά, και εξετάζονται οι επιρροές των ενδυματολόγων, η διαδικασία υλοποίησης των κοστουμιών και οι αλλαγές που χρειάστηκαν να πραγματοποιηθούν προκειμένου να προσαρμοστούν τα κοστούμια στα ακροβατικά νούμερα. Το δεύτερο μέρος αποτελεί τον φάκελο τεκμηρίωσης της καλλιτεχνικής μεταπτυχιακής εργασίας με τίτλο «Αριάδνη μια παράσταση τσίρκου» που αφορά τον σχεδιασμό μιας παράστασης σύγχρονου τσίρκου η οποία βασίζεται στον μύθο του Θησέα και της Αριάδνης. Για τις ανάγκες της εργασίας έχει γίνει μεταφορά του μύθου στη σύγχρονη εποχή και η ιστορία της παράστασης δεν ακολουθεί πιστά τα γεγονότα του μύθου όπως τον γνωρίζουμε. Ο Θησέας εμφανίζεται ως δεύτερο πρόσωπο, ενώ κεντρικό πρόσωπο της ιστορίας αποτελεί η Αριάδνη. Η παράσταση έχει σχεδιαστεί για ιταλική σκηνή, και συγκεκριμένα για την σκηνή της Ε.Μ.Σ. του Κρατικού Θεάτρου Βορείου Ελλάδος
description: The present postgraduate thesis consists of two parts. In the first part, which bears the title “Constumes in Contemporary Circus through Cirque du Soleil performances”, costumes from three Cirque du Soleil performances, named “Ovo”, “Kurios” and “Varekai” are studied. These performances were chosen due to the impressive costumes and the special structures included. First, the paper presents the history of Cirque du Soleil Entertainment Company and the changes that took place in Contemporary Circus. Moreover, each performance is separately analyzed and the costumers’ influences, the progress of creating the costumes as well as the changes that had to take place in order to adjust the costumes to the acrobatic acts are examined. The second part is a documentation file of the Arts Postgraduate paper called “Ariadne, a circus show” which is about the design of a contemporary circus performance based on the myth of Theseus and Ariadne. For the needs of the paper, an adaptation of the myth to modern days has taken place and the story presented in the show does not totally correspond to the facts of the myth as we know it. Theseus is presented as a secondary character, while Ariadne is the central character of the story. The show has been designed for an Italian stage and specifically for the Theatre of the society for Macedonian Studies stage of the National Theatre of Northern Greece
Optically controlled spin-glasses in multi-qubit cavity systems
Creators: name: Jarrett, Timothy C.
name: Lee, Chiu Fan
name: Johnson, Neil F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Recent advances in nanostructure fabrication and optical control, suggest that it will soon be possible to prepare collections of interacting two-level systems (i.e. qubits) within an optical cavity. Here we show theoretically that such systems could exhibit novel phase transition phenomena involving spin-glass phases. By contrast with traditional realizations using magnetic solids, these phase transition phenomena are associated with both matter and radiation subsystems. Moreover the various phase transitions should be tunable simply by varying the matter-radiation coupling strength.
description: 4 pages, 3 figures
Neural Fashion Image Captioning : Accounting for Data Diversity
Creators: name: Hacheme, Gilles
name: Sayouti, Noureini
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.10; I.2.7; I.4.10

description: Image captioning has increasingly large domains of application, and fashion is not an exception. Having automatic item descriptions is of great interest for fashion web platforms, sometimes hosting hundreds of thousands of images. This paper is one of the first to tackle image captioning for fashion images. To address dataset diversity issues, we introduced the InFashAIv1 dataset containing almost 16.000 African fashion item images with their titles, prices, and general descriptions. We also used the well-known DeepFashion dataset in addition to InFashAIv1. Captions are generated using the Show and Tell model made of CNN encoder and RNN Decoder. We showed that jointly training the model on both datasets improves captions quality for African style fashion images, suggesting a transfer learning from Western style data. The InFashAIv1 dataset is released on Github to encourage works with more diversity inclusion.
USE OF RUTIN AS A SALT STRESS MITIGATOR FOR YELLOW BELL PEPPER IN A PROTECTED ENVIRONMENT
Creators: name: Francisca Gleiciane Nascimento Lopes
name: Ademir Silva Menezes*
name: Luis Gonzaga Pinheiro Neto
name: Thales Vinicius de Araújo Viana
name: Beatriz de Abreu Araújo
name: Joilson Silva Lima
name: Claudivan Feitosa de Lacerda
name: Marlos Alves Bezerra
Publisher: name: Zenodo
Year: 2024
Subjects: Capsicum annuum, Biostimulant, Salinity, Irrigation, Greenhouse.

description: Abstract: Bell pepper is one of the main vegetables produced in the world and are among the most commercialized and consumed in Brazil due to their ease of cultivation in small areas and their high economic value. Given the need for vegetable producers to use lower-quality water for irrigation, it is necessary to study inputs that can mitigate the harmful effects of salinity on plants, such as the biostimulant rutin. A study was therefore carried out to assess whether the application of the biostimulant rutin mitigates the harmful effects of salinity when growing yellow peppers in a protected environment. The experimental design used was randomized blocks in subdivided plots with four replications. The plots consisted of four levels of electrical conductivity of the irrigation water (0.3, 1.5, 3.0, and 4.5 dS m-1), and the subplots were four doses of the biostimulant rutin (0.0, 6.0, 12.0, and 18.0 g L-1) applied via foliar. Growth variables such as plant height and stem diameter, production, fruit quality, leaf water potential, gas exchange, brix level, fruit weight, and shoot dry weight were assessed. The data was submitted to analysis of variance and Tukey test at 5%. The doses of the biostimulant rutin did not mitigate the effects of the salts on the plants, and further tests with higher doses of the biostimulant are needed to verify its efficiency. The salts caused a reduction in plant growth, stem diameter, and the dry weight of the aerial part of the yellow bell pepper plants.
Coherent energy manipulation in single-neutron interferometry
Creators: name: Sponar, S.
name: Klepp, J.
name: Loidl, R.
name: Filipp, S.
name: Badurek, G.
name: Hasegawa, Y.
name: Rauch, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have observed the stationary interference oscillations of a triple-entangled neutron state in an interferometric experiment. Time-dependent interaction with two radio-frequency (rf) fields enables coherent manipulation of an energy degree of freedom in a single neutron. The system is characterized by a multiply entangled state governed by a Jaynes-Cummings Hamiltonian. The experimental results confirm coherence of the manipulation as well as the validity of the description.
description: 4 pages, 3 figures
Παραγοντική Ανάλυση Αντιστοιχιών - Εφαρμογή στα τυχερά παιχνίδια
Creators: name: Ζαλαβετούδη, Δέσποινα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Παραγοντική Ανάλυση Αντιστοιχιών
Ανάλυση Δεδομένων
Τυχερά παιχνίδια
Correspondence Analysis
Data Analysis
Gambling

description: Η παρούσα διπλωματική εργασία πραγματεύεται την επεξεργασία πολυδιάστατων κατηγορικών δεδομένων τα οποία προέρχονται από την συλλογή ερωτηματολογίων. Μετά την κωδικοποίησή τους, τα δεδομένα υποβάλλονται σε στατιστική επεξεργασία μέσω κατάλληλων μεθόδων ανάλυσης δεδομένων. Οι μέθοδοι που χρησιμοποιούνται και αναλύονται διεξοδικά σε όλη την έκταση της εργασίας είναι η Παραγοντική Ανάλυση Αντιστοιχιών και η Πολλαπλή Παραγοντική Ανάλυση Αντιστοιχιών. Τα μοντέλα αυτά, αντιστοιχίζοντας τις κατηγορίες-ιδιότητες της κάθε μεταβλητής σε σημεία ενός χώρου πολλών διαστάσεων, στοχεύουν στην προβολή τους σε ένα χώρο μικρότερης διάστασης όπου οι αποστάσεις μεταξύ των διάφορων σημείων θα αντικατοπτρίζουν την μεταξύ τους σύνδεση. Το ερωτηματολόγιο, του οποίου οι ερωτήσεις τίθενται υπό ανάλυση, διαπραγματεύεται ερωτήσεις σχετικές με τα τυχερά παιχνίδια και απαντήθηκε συνολικά από 150 παίκτες. Τα αποτελέσματα της στατιστικής ανάλυσης μέσω των μεθόδων της Παραγοντικής Ανάλυσης Αντιστοιχιών παρουσιάζονται μέσα από γραφήματα όπου οι διάφορες κατηγορίες-ιδιότητες των μεταβλητών-ερωτήσεων παρουσιάζονται ως σημεία στο επίπεδο αλλά και μέσα από εκτιμήσεις των σκορ των κατηγοριών των μεταβλητών. Μέσω της στατιστικής ανάλυσης των δεδομένων αυτών και της ερμηνείας των αποτελεσμάτων της επιδιώκεται να αναδειχθούν η σημαντικότητα και η δυναμικότητα των συγκεκριμένων μοντέλων ανάλυσης δεδομένων, ώστε ο αναγνώστης να τις κατανοήσει περισσότερο και να αποκομίσει τις περισσότερες δυνατές πληροφορίες
description: This dissertation deals with multiple categorical data manipulation which deprive of a questionnaire designed for a research purpose. After the data has been coded, we can implement a suitable statistical technique for its analysis. In this dissertation we use and briefly introduce two data analysis methods called “Correspondence Analysis” and “Multiple Correspondence Analysis”. These models have the ability to match the categories of each variable with high-dimension points and then measure the distance between points projected in lower dimension space. Then, the distance measured is equivalent to the points’ correlation. The questions been processed come from a questionnaire relevant to gambling and have been answered by 150 players. The results of this statistical analysis are presented through graphs and scores tables. The aim of this dissertation is to highlight the significance of these data analysis models through the statistical analysis and the interpretation of its results. In this way, we aspire to give the opportunity to the reader to deeply understand the models and extract the maximum information
Quintessential inflation and cosmological seesaw Mechanism: reheating and observational constraints
Creators: name: Saló, Llibert Aresté
name: Benisty, David
name: Guendelman, Eduardo I.
name: Haro, Jaime d.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently a new kind of quintessential inflation coming from the Lorentzian distribution has been introduced in [1,2]. The model leads to a very simple potential, which basically depends on two parameters, belonging to the class of $α$-attractors and depicting correctly the early and late time accelerations of our universe. The potential emphasizes a {\it cosmological seesaw mechanism} (CSSM) that produces a large inflationary vacuum energy in one side of the potential and a very small value of dark energy on the right hand side of the potential. {Here we show that the model agrees with the recent observations and with the reheating constraints. Therefore the model gives a reasonable scenario beyond the standard $Λ$CDM that includes the inflationary epoch.}
description: 9 pages; 5 figures; accepted for publishing in JCAP
The Matrix Reloaded - on the Dark Energy Seesaw
Creators: name: Enqvist, Kari
name: Hannestad, Steen
name: Sloth, Martin S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a novel mechanism for dark energy, based on an extended seesaw for scalar fields, which does not require any new physics at energies below the TeV scale. A very light quintessence mass is usually considered to be technically unnatural, unless it is protected by some symmetry broken at the new very light scale. We propose that one can use an extended seesaw mechanism to construct technically natural models for very light fields, protected by SUSY softly broken above a TeV.
description: 8 pages
ICSE 2021 Artefact Evaluation - Submission and Reviewing Guidelines
Creators: name: Mendez, Daniel
name: Abrahåo, Silvia
Publisher: name: figshare
Year: 2021
Subjects: subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: This document outlines, briefly, the submission and reviewing process for the artifact evaluation (AE) track of ICSE 2021. It aims at providing authors and reviewers with pragmatic insights into the process and expected criteria to merit awarding the respective badges.
Multi-criteria decision analysis for optimal cancer treatment selection: a recommendation for appropriate criteria and method

Creators: name: Adunlin, Georges
Publisher: name: F1000Research
Year: 2015

description: The decision-making process for the selection of optimal cancer treatments is an arduous task involving multiple stakeholders, multiple and often conflicting criteria, as well as many other constraints. Multi-Criteria Decision Analysis (MCDA) approach provides a useful set of tools and flexible framework that can be utilized in complex decision-making situations, such as those routinely faced by health care providers. Since MCDA uses different operationalization and evaluation procedures, users must identify the appropriate decision criteria, and the most suitable technique for the problem to be tackled. The purpose of this work is to identify relevant decision criteria and the most suitable MCDA method to aid in the selection of optimal cancer treatments. Relevant decision criteria were identified from a review of the literature on health care decision-making and were organized based on experts’ opinions. A tentative guideline, a decision procedure, and a conceptual framework were utilized to select the most suitable MCDA method.Three major criteria categories were considered for the selection of an optimal cancer treatment including clinical, humanistic, and economic outcomes. Among all the MCDA methods considered, an outranking approach, namely ELECTRE 1S was found to be suited to the decision problem of cancer treatment selection. This method has strong features including the potential to provide the single best alternative, the option of dealing with both quantitative and qualitative criteria, and the capability of avoiding compensation between criteria. MCDA provides a framework to guide decisions in the selection of complex cancer treatment options. This work highlights the contextual and practical issues that are important to consider in applying MCDA to make decision regarding the selection of optimal cancer treatments among several alternatives. To achieve the stated goal, health care providers need to actively participate in testing, and implementing tools that would take into account their expertise, judgement, and values on the particular decision problem under consideration. Moreover, an application of MCDA using a case study needs to be performed to test the applicability of the selected method.
Single-bit Feedback and Quantum Dynamical Decoupling
Creators: name: Ticozzi, Francesco
name: Viola, Lorenza
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Synthesizing an effective identity evolution in a target system subjected to unwanted unitary or non-unitary dynamics is a fundamental task for both quantum control and quantum information processing applications. Here, we investigate how single-bit, discrete-time feedback capabilities may be exploited to enact or to enhance quantum procedures for effectively suppressing unwanted dynamics in a finite-dimensional open quantum system. An explicit characterization of the joint unitary propagators correctable by a single-bit feedback strategy for arbitrary evolution time is obtained. For a two-dimensional target system, we show how by appropriately combining quantum feedback with dynamical decoupling methods, concatenated feedback-decoupling schemes may be built, which can operate under relaxed control assumptions and can outperform purely closed-loop and open-loop protocols.
description: 12 pages, 2 figures
Variability of Young Massive Stars in the Galactic Super Star Cluster Westerlund 1
Creators: name: Bonanos, Alceste Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents the first optical variability study of the Westerlund 1 super star cluster in search of massive eclipsing binary systems. A total of 129 new variable stars have been identified, including the discovery of 4 eclipsing binaries that are cluster members, 1 additional candidate, 8 field binaries, 19 field delta Scuti stars, 3 field W UMa eclipsing binaries, 13 other periodic variables and 81 long period or non-periodic variables. These include the known luminous blue variable, the B[e] star, 11 Wolf-Rayet stars, several supergiants, and other reddened stars that are likely members of Westerlund 1. The bright X-ray source corresponding to the Wolf-Rayet star WR77o (B) is found to be a 3.51 day eclipsing binary. The discovery of a reddened detached eclipsing binary system implies the first identification of main-sequence stars in Westerlund 1.
description: 28 pages, 9 figures, 3 tables; accepted for publication in The Astronomical Journal. Full-resolution version and color image of the cluster are available at http://www.dtm.ciw.edu/bonanos/Westerlund1
The dark degeneracy: On the number and nature of dark components
Creators: name: Kunz, Martin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use that gravity probes only the total energy momentum tensor to show how this leads to a degeneracy for generalised dark energy models. Because of this degeneracy, Omega_m cannot be measured. We demonstrate this explicitely by showing that the CMB and supernova data is compatible with very large and very small values of Omega_m for a specific family of dark energy models. We also show that for the same reason interacting dark energy is always equivalent to a family of non-interacting models. We argue that it is better to face this degeneracy and to parametrise the actual observables.
description: 4 pages, 2 figures; v2: some references added
Single-particle localization in a two-dimensional Rydberg spin system
Creators: name: Klinger, Jan Philipp
name: Gärttner, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study excitation transport in a two-dimensional system of randomly assembled spins with power-law hopping in two dimensions. This model can be realized in cold atom quantum simulators with Rydberg atoms. In these experiments, due to the Rydberg blockade effect, the degree of disorder in the system is effectively tunable by varying the spin density. We study dynamics and eigenstate properties of the model as a function of disorder strength and system size and discuss potential limitations for experiments. At strong disorder we predominantly observe localized eigenstates with power-law tails. In this regime the spectral and eigenstate properties can be understood in a perturbative picture of states localized on small clusters of spins. As the disorder strength is weakened eigenstates become increasingly delocalized and a set of seemingly multifractal states appears in the low-energy tail of the spectrum. A detailed study of the system-size scaling of the eigenstate properties indicates that in the infinite-size limit all states eventually become localized. We discuss the feasibility of observing localization effects experimentally in the spatial spreading of an initially localized excitation and identify limited system sizes and finite decoherence rates as major challenges. Our study paves the way towards an experimental observation of localization effects in Rydberg spin systems with tunable disorder.
description: v2 close to journal version
Enhancing the photomixing efficiency of optoelectronic devices in the terahertz regime
Creators: name: Pilla, Subrahmanyam
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A method to reduce the transit time of majority of carriers in photomixers and photo detectors to $< 1$ ps is proposed. Enhanced optical fields associated with surface plasmon polaritons, coupled with velocity overshoot phenomenon results in net decrease of transit time of carriers. As an example, model calculations demonstrating $> 280\times$ (or $\sim$2800 and 31.8 $μ$W at 1 and 5 THz respectively) improvement in THz power generation efficiency of a photomixer based on Low Temperature grown GaAs are presented. Due to minimal dependence on the carrier recombination time, it is anticipated that the proposed method paves the way for enhancing the speed and efficiency of photomixers and detectors covering UV to far infrared communications wavelengths (300 to 1600 nm).
description: 5 pages, 4 figures