cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Το χρώμα στο μουσείο υπό το πρίσμα της σημειωτικής
Creators: name: Μούντζια, Ευαγγελία Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Σημειωτική
Χρώμα
Μουσείο
«λευκός κύβος»
Semiotics
Color
Museum
“white cube”

description: Η παρούσα διπλωματική εργασία έχει ως στόχο να αναδείξει τη σημασία που έχει η επιλογή και χρήση χρώματος στο χώρο των μουσείων, σύμφωνα με τις θεωρίες της σημειωτικής επιστήμης, και να τονίσει πως αυτή η επιλογή δε μπορεί να είναι ουδέτερη. Η σημειωτική ασχολείται με τη μελέτη των σημείων, όπου σημείο θεωρείται οποιοδήποτε πράγμα μπορεί να αντικαταστήσει κάποιο άλλο και να φέρει τη σημασία του. Ως σημεία λαμβάνονται υπόψη, υλικά και άυλα πράγματα, εικόνες, ήχοι, χειρονομίες, αντικείμενα τα οποία μετατρέπονται σε σημεία μόλις τους αποδοθεί μια σημασία. Σε αυτή την εργασία, ως τέτοιο λαμβάνεται υπόψη και το χρώμα το οποίο ανάλογα με το πλαίσιο αναφοράς στο οποίο βρίσκεται επιδέχεται πολλαπλών και διαφορετικών ερμηνειών. Αναφέρεται η αισθητική του «λευκού κύβου», ως η πιο απτή χρωματική επιλογή στο χώρο των μουσείων έτσι ώστε να αναδειχθεί η φαινομενική ουδετερότητα που φέρουν τα χρώματα. Στην παρούσα εργασία, λοιπόν, παρουσιάζονται τόσο ορισμένες καίριες θέσεις σχετικά με την επιστήμη της σημειωτικής, όσο και για τη θεωρία του χρώματος και πως αυτές εντάσσονται στο χώρο του μουσείου. Μέσω έρευνας από επισκέψεις σε μουσεία της Ελλάδας, εντοπίζονται και σχολιάζονται οι χρωματικές επιλογές στους εκθεσιακούς τους χώρους, και τι σημασίες μπορεί να φέρουν αυτές. Καταλήγοντας η μελέτη αυτή τονίζει το έντονο κοινωνικο-πολιτισμικό βάρος που φέρουν τα χρώματα και πως οι ερμηνείες τους ποικίλουν σύμφωνα με το πλαίσιο στο οποίο εντάσσονται.
description: The purpose of this dissertation is to bring forth the meaning behind the choice and the use of colors in the field of museums, based on the theories of semiotics, and to underline that this choice is far from neutral. Semiotics has to do with the study of signs, where sign is any thing that can stand for another thing and carry its meaning. Signs can be of any material and abstract things, such as images, sounds, gestures, things that are converted into signs when they are given sense. In this assignment, color is taken under consideration as a sign which can have multiple and different meanings. The “white cube” is mentioned as the more relatable color choice in the field of museums in order to bring out the phenomenological neutrality of colors. In this dissertation, are presented some fundamental views on semiotics and on color theory and how these are involved in the field of museums. Through research contacted by visiting some museums in Greece, are located and commented the color choices of the exhibition areas of the museums and what meanings these choices may carry. In conclusion, this study emphasizes on the heavy socio-cultural weight that colors carry and how their interpretations vary depending on the context.
description: Σε συνεργασία: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Loop Approach to Lattice Gauge Theories
Creators: name: Mathur, Manu
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We solve the Gauss law and the corresponding Mandelstam constraints in the loop Hilbert space ${\cal H}^{L}$ using the prepotential formulation of $(d+1)$ dimensional SU(2) lattice gauge theory. The resulting orthonormal and complete loop basis, explicitly constructed in terms of the $d(2d-1)$ prepotential intertwining operators, is used to transcribe the gauge dynamics directly in ${\cal H}^{L}$ without any redundant gauge and loop degrees of freedom. Using generalized Wigner-Eckart theorem and Biedenharn -Elliot identity in ${\cal H}^L$, we show that the loop dynamics for pure SU(2) lattice gauge theory in arbitrary dimension, is given by the real symmetric $3nj$ symbols of first kind (e.g., n=6, 10 for d=2, 3 respectively). The corresponding "ribbon diagrams" representing SU(2) loop dynamics are constructed. The prepotential techniques are trivially extended to include fundamental matter fields leading to a description in terms of loops and strings. The SU(N) gauge group is briefly discussed.
description: 32 pages, 9 figures, typos corrected, new references added (to be published in Nucl. Phys. B)
Line-of-sight velocity distributions of elliptical galaxies from collisionless mergers
Creators: name: Gonzalez-Garcia, A. C.
name: Balcells, M.
name: Olshevsky, V. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the skewness of the line-of-sight velocity distributions in model elliptical galaxies built through collisionless galaxy mergers. We build the models using large N-body simulations of mergers between either two spiral or two elliptical galaxies. Our aim is to investigate whether the observed ranges of skewness coefficient (h3) and the rotational support (V/sigma), as well as the anticorrelation between h3 and V, may be reproduced through collisionless mergers. Previous attempts using N-body simulations failed to reach V/sigma ~ 1-2 and corresponding high h3 values, which suggested that gas dynamics and ensuing star formation might be needed in order to explain the skewness properties of ellipticals through mergers. Here we show that high V/sigma and high h3 are reproduced in collisionless spiral-spiral mergers whenever a central bulge allows the discs to retain some of their original angular momentum during the merger. We also show that elliptical-elliptical mergers, unless merging from a high-angular momentum orbit, reproduce the strong skewness observed in non-rotating, giant, boxy ellipticals. The behaviour of the h3 coefficient therefore associates rapidly-rotating disky ellipticals to disc-disc mergers, and associates boxy, slowly-rotating giant ellipticals to elliptical-elliptical mergers, a framework generally consistent with the expectations of hierarchical galaxy formation.
description: 5 pages, 4 figures, MNRAS Letters, in press
The compressible granular collapse in a fluid as a continuum: validity of a Navier-Stokes model with $μ(J)$-$ϕ(J)$-rheology
Creators: name: Rauter, Matthias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The incompressible $μ(I)$-rheology has been used to study subaerial granular flows with remarkable success. For subaquatic granular flows, drag between grains and the pore fluid is substantially higher and the physical behaviour is more complex. High drag forces constrain the rearrangement of grains and dilatancy, leading to a considerable build-up of pore pressure. Its transient and dynamic description is the key to modelling subaquatic granular flows but out of the scope of incompressible models. In this work, we advance from the incompressible $μ(I)$-rheology to the compressible $μ(J)$-$ϕ(J)$-rheology to account for pore pressure, dilatancy, and the scaling laws under subaquatic conditions. The model is supplemented with critical state theory to yield the correct properties in the quasi-static limit. The pore fluid is described by an additional set of conservation equations and the interaction with grains is described by a drag model. This new implementation enables us to include most of the physical processes relevant for submerged granular flows in a highly transparent manner. Both, the incompressible and compressible rheologies are implemented into OpenFOAM and various simulations at low and high Stokes numbers are conducted with both frameworks. We found a good agreement of the $μ(J)$-$ϕ(J)$-rheology with low Stokes number experiments, that incompressible models fail to describe. The combination of granular rheology, pore pressure, and drag model leads to complex phenomena such as apparent cohesion, remoulding, hydroplaning, and turbidity currents. The simulations give remarkable insights into these phenomena and increase our understanding of subaquatic mass transports.
Additional file 4 of UBIAD1 alleviates ferroptotic neuronal death by enhancing antioxidative capacity by cooperatively restoring impaired mitochondria and Golgi apparatus upon cerebral ischemic/reperfusion insult
Creators: name: Huang, Yan
name: Liu, Jianyang
name: He, Jialin
name: Hu, Zhiping
name: Tan, Fengbo
name: Zhu, Xuelin
name: Yuan, Fulai
name: Jiang, Zheng
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Mental Health

description: Additional file 4. The quantification of the alteration of Golgi apparatus morphology in neurons.
Precise Prediction for M_W in the MSSM
Creators: name: Heinemeyer, S.
name: Hollik, W.
name: Stockinger, D.
name: Weber, A. M.
name: Weiglein, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the currently most accurate evaluation of the W boson mass, M_W, in the Minimal Supersymmetric Standard Model (MSSM). The full complex phase dependence at the one-loop level, all available MSSM two-loop corrections as well as the full Standard Model result have been included. We analyse the impact of the different sectors of the MSSM at the one-loop level with a particular emphasis on the effect of the complex phases. We discuss the prediction for M_W based on all known higher-order contributions in representative MSSM scenarios. Furthermore we obtain an estimate of the remaining theoretical uncertainty from unknown higher-order corrections.
description: 38 pages, 25 figures. Minor corrections, additional references
Dependence of single-particle energies on coupling constants of the nuclear energy density functional
Creators: name: Kortelainen, M.
name: Dobaczewski, J.
name: Mizuyama, K.
name: Toivanen, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show that single-particle energies in doubly magic nuclei depend almost linearly on the coupling constants of the nuclear energy density functional. Therefore, they can be very well characterized by the linear regression coefficients, which we calculate for the coupling constants of the standard Skyrme functional. We then use these regression coefficients to refit the coupling constants to experimental values of single-particle energies. We show that the obtained rms deviations from experimental data are still quite large, of the order of 1.1 MeV. This suggests that the current standard form of the Skyrme functional cannot ensure spectroscopic-quality description of single-particle energies, and that extensions of this form are very much required.
description: 8 RevTeX pages, 16 EPS figures, submitted to Physical Review C
What Do We Want From Explainable Artificial Intelligence (XAI)? -- A Stakeholder Perspective on XAI and a Conceptual Model Guiding Interdisciplinary XAI Research
Creators: name: Langer, Markus
name: Oster, Daniel
name: Speith, Timo
name: Hermanns, Holger
name: Kästner, Lena
name: Schmidt, Eva
name: Sesing, Andreas
name: Baum, Kevin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Previous research in Explainable Artificial Intelligence (XAI) suggests that a main aim of explainability approaches is to satisfy specific interests, goals, expectations, needs, and demands regarding artificial systems (we call these stakeholders' desiderata) in a variety of contexts. However, the literature on XAI is vast, spreads out across multiple largely disconnected disciplines, and it often remains unclear how explainability approaches are supposed to achieve the goal of satisfying stakeholders' desiderata. This paper discusses the main classes of stakeholders calling for explainability of artificial systems and reviews their desiderata. We provide a model that explicitly spells out the main concepts and relations necessary to consider and investigate when evaluating, adjusting, choosing, and developing explainability approaches that aim to satisfy stakeholders' desiderata. This model can serve researchers from the variety of different disciplines involved in XAI as a common ground. It emphasizes where there is interdisciplinary potential in the evaluation and the development of explainability approaches.
description: 57 pages, 2 figures, 1 table, to be published in Artificial Intelligence, Markus Langer, Daniel Oster and Timo Speith share first-authorship of this paper
A Pessimistic Bilevel Stochastic Problem for Elastic Shape Optimization
Creators: name: Burtscheidt, Johanna
name: Claus, Matthias
name: Conti, Sergio
name: Rumpf, Martin
name: Sassen, Josua
name: Schultz, Rüdiger
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 49J55, 49M41, 74K25, 90C15, 91A65

description: We consider pessimistic bilevel stochastic programs in which the follower maximizes over a fixed compact convex set a strictly convex quadratic function, whose Hessian depends on the leader's decision. The resulting random variable is evaluated by a convex risk measure. Under assumptions including real analyticity of the lower-level goal function, we prove existence of optimal solutions. We discuss an alternate model where the leader hedges against optimal lower-level solutions, and show that in this case solvability can be guaranteed under weaker conditions both in a deterministic and in a stochastic setting. The approach is applied to a mechanical shape optimization problem in which the leader decides on an optimal material distribution to minimize a tracking-type cost functional, whereas the follower chooses forces from an admissible set to maximize a compliance objective. The material distribution is considered to be stochastically perturbed in the actual construction phase. Computational results illustrate the bilevel optimization concept and demonstrate the interplay of follower and leader in shape design and testing.
A Straightforward Introduction to Continuous Quantum Measurement
Creators: name: Jacobs, Kurt
name: Steck, Daniel A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a pedagogical treatment of the formalism of continuous quantum measurement. Our aim is to show the reader how the equations describing such measurements are derived and manipulated in a direct manner. We also give elementary background material for those new to measurement theory, and describe further various aspects of continuous measurements that should be helpful to those wanting to use such measurements in applications. Specifically, we use the simple and direct approach of generalized measurements to derive the stochastic master equation describing the continuous measurements of observables, give a tutorial on stochastic calculus, treat multiple observers and inefficient detection, examine a general form of the measurement master equation, and show how the master equation leads to information gain and disturbance. To conclude, we give a detailed treatment of imaging the resonance fluorescence from a single atom as a concrete example of how a continuous position measurement arises in a physical system.
description: 24 pages, 3 eps figues. To appear in Contemporary Physics
TILDAGI FONETIK OʻZGARISHLARNING OʻRNI
Creators: name: Yuldosheva, Begoyim
Publisher: name: Zenodo
Year: 2024

description: Maqola tejamlilik tamoyilining tilshunoslikda o`rganilish tarixini yoritishga bag`ishlangan bo`lib, tejamkorlik hodisasi haqida turli davr tilshunoslari tomonidan keltirilgan turlicha qarashlar bayoni bilan boshlangan. Shuningdek, tilshunos olimlarning tejamlilik ustida atroflicha olib borgan izlanishlari, ba’zi o`rinlarda esa ularning bir-biriga qarama-qarshi bo`lgan fikrlari ham qayd etib o`tilgan.
Evaporation of four-dimensional dynamical black holes sourced by the quantum trace anomaly
Creators: name: Meda, Paolo
name: Pinamonti, Nicola
name: Roncallo, Simone
name: Zanghì, Nino
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the evaporation of a four-dimensional spherically symmetric black hole formed in a gravitational collapse. We analyze the back-reaction of a massless quantum scalar field conformally coupled to the scalar curvature by means of the semiclassical Einstein equations. We show that the evaporation is linked to an ingoing negative energy flux at the dynamical horizon and that this flux is induced by the quantum matter trace anomaly outside the black hole horizon whenever a suitable averaged energy condition is satisfied. For illustrative purposes, we evaluate the negative ingoing flux and the corresponding rate of evaporation in the case of a null radiating star described by the Vaidya spacetime.
description: 21 pages, 2 figure. Changed abstract and introduction, modified section 3, added figure about the smearing function. Added some references and made minor corrections. Made slightly modifications of the ANEC and of the smearing function presented in the statement of Theorem 4.1 (p.10). Added corrections to the final part of the proof of Theorem 4.1
Exchange interaction and Fano resonances in diatomic molecular systems
Creators: name: Fransson, J.
name: Balatsky, A. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a mechanism to use scanning tunneling microscopy (STM) for direct measurements of the two-electron singlet-triplet exchange splitting $J$ in diatomic molecular systems, unsing the coupling between the molecule and the substrate electrons. The different pathways for electrons lead to interference effects and generate kinks in the differential conductance at the energies for the singlet and triplet states. These features are related to Fano resonance due to the branched electron wave functions. The ratio between the tunneling amplitudes through the two atoms can be modulated by spatial movements of the tip along the surface.
description: 4 pages, 2 figures, submitted - Changes in Fig. 1 (panel c) added), and minor modification in the main text - new version, as published
Using Data Assimilation to Train a Hybrid Forecast System that Combines Machine-Learning and Knowledge-Based Components
Creators: name: Wikner, Alexander
name: Pathak, Jaideep
name: Hunt, Brian R.
name: Szunyogh, Istvan
name: Girvan, Michelle
name: Ott, Edward
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We consider the problem of data-assisted forecasting of chaotic dynamical systems when the available data is in the form of noisy partial measurements of the past and present state of the dynamical system. Recently there have been several promising data-driven approaches to forecasting of chaotic dynamical systems using machine learning. Particularly promising among these are hybrid approaches that combine machine learning with a knowledge-based model, where a machine-learning technique is used to correct the imperfections in the knowledge-based model. Such imperfections may be due to incomplete understanding and/or limited resolution of the physical processes in the underlying dynamical system, e.g., the atmosphere or the ocean. Previously proposed data-driven forecasting approaches tend to require, for training, measurements of all the variables that are intended to be forecast. We describe a way to relax this assumption by combining data assimilation with machine learning. We demonstrate this technique using the Ensemble Transform Kalman Filter (ETKF) to assimilate synthetic data for the 3-variable Lorenz system and for the Kuramoto-Sivashinsky system, simulating model error in each case by a misspecified parameter value. We show that by using partial measurements of the state of the dynamical system, we can train a machine learning model to improve predictions made by an imperfect knowledge-based model.
description: 28 pages, 9 figures
On the trigonometric Felderhof model with domain wall boundary conditions
Creators: name: Caradoc, A
name: Foda, O
name: Wheeler, M
name: Zuparic, M
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the trigonometric Felderhof model, of free fermions in an external field, on a finite lattice with domain wall boundary conditions. The vertex weights are functions of rapidities and external fields. We obtain a determinant expression for the partition function in the special case where the dependence on the rapidities is eliminated, but for general external field variables. This determinant can be evaluated in product form. In the homogeneous limit, it is proportional to a 2-Toda tau function. Next, we use the algebraic Bethe ansatz factorized basis to obtain a product expression for the partition function in the general case with dependence on all variables.
description: 12 pages. Version to appear in JSTAT. Proof of a determinant expression included. A misleading statement removed. Expository improvements. No change in conclusions
Στοιχεία που αποκλείουν και στοιχεία που περιορίζουν κατά το νόμο το ύψος της αποζημίωσης πελατείας
Creators: name: Φρειδερίκη, Θεοδώρου Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εμπορικός αντιπρόσωπος
Ποσό αποζημίωσης πελατείας
Απώλεια αποζημίωσης πελατείας
Commercial agent
Amount of commercial agent’s indemnity
Loss of commercial agent’s indemnity

description: Ο θεσμός της αποζημίωσης πελατείας εισήχθη στην εσωτερική έννομη τάξη με το πδ. 219/1991 «περί εμπορικών αντιπροσώπων» (άρθρο 9), προς συμμόρφωση με την Οδηγία 86/653/ΕΟΚ, στόχος της οποίας είναι η εξασφάλιση ενός υψηλού επιπέδου προστασίας του εμπορικού αντιπροσώπου. Ωστόσο, ο νομοθέτης χωρίς να αγνοεί και τα συμφέροντα του αντιπροσωπευόμενου, προβλέπει μηχανισμούς εξισορρόπησης των αντικρουόμενων αυτών συμφερόντων, οι οποίοι μπορούν να αποκλείσουν ή και να περιορίσουν το ύψος της αποζημίωσης πελατείας. Έτσι, με την παρούσα εργασία, μετά τις εισαγωγικές παρατηρήσεις σχετικά με το θεσμό της αποζημίωσης πελατείας εξετάσαμε τις προϋποθέσεις γέννησης της αξίωσης, οι οποίες αναφέρονται στο άρθρο 9 παρ. 1α πδ. 219/1991(τυπική προϋπόθεση: λύση της σύμβασης εμπορικής αντιπροσωπείας και ουσιαστικές προϋποθέσεις). Ειδική αναφορά θα γίνε στον τρόπο που η νομολογία και η θεωρία ερμηνεύει την προϋπόθεση του δίκαιου χαρακτήρα της αποζημίωσης, καθώς όπως και οι υπόλοιπες ουσιαστικές προϋποθέσεις, καθορίζει το ύψος του ποσού της αποζημίωσης πελατείας). Εν συνεχεία, παρουσιάστηκε ο τρόπος υπολογισμού του ύψους της αποζημίωσης και αναλύθηκε το άρθρο 9 παρ. 1β πδ 219/1991 το οποίο θέτει το ανώτατο ύψος της αποζημίωσης και το άρθρο 9 παρ. 3 πδ. 219/1991 στο οποίο αναφέρονται εξαντλητικά οι λόγοι έκπτωσης της αξίωσης αποζημίωσης πελατείας.
description: The institution of customer compensation was introduced into the internal legal order by the dec. 219/1991 'on commercial agents' (Article 9), in compliance with Directive 86/653 / EEC, which aims to ensure a high level of protection for the commercial agent. However, the legislator, without even ignoring the interests of the representative, provides for mechanisms to balance those conflicting interests, which may exclude or even limit the amount of customer compensation. Thus, in the present thesis, following the introductory remarks on the institution of customer compensation, we examined the conditions of birth of the claim, which are referred to in Article 9 par.(1a) by the dec. 219/1991 (formal requirement: termination of commercial agency contract and substantive requirements). Specific reference will be made to the way in which case law and theory interprets the requirement of fairness of compensation, as well as the other substantive requirements, determines the amount of customer compensation). Also, the method of calculating the amount of compensation was presented and Article 9 par. (1b) by the dec. 219/1991 detailing the reasons for the deduction of the customer compensation claim.
A potential flow model for separated flow around airfoils
Creators: name: Brun, Sarah K.
Publisher: name: University of British Columbia
Year: 2008

description: Continuing the study carried out by Dr. W.W.H. Yeung, a former Ph.D. student in the department of Mechanical Engineering at U.B.C., some new work has been done on the wake source model, a potential flow model for steady separated flow. This work includes some modifications to the model and applications to new geometries. In the wake source model, the body of interest is conformally mapped to a circle. In the transform plane, singularities (most often sources) are used to represent the wake by creating free stream-lines simulating the separating shear layers. The empirical data required by the modelare the positions of separation points and the specification of the pressure coefficient at these points. Applications of this model include the case of flow normal to a flat plate, a separation bubble at the leading edge of a flat plate airfoil, and an airfoil fitted with a Kriiger flap. The case of the normal flat plate was a test case in which the original model was odified in an attempt to specify a constant pressure on the free stream line after separation. This has been achieved to a limited extent by adding sources to the original model. Future work should include the application of the same method to a spoiler and slotted flap air foil configuration. An earlier model using a doublet as singularity was developed by Yeung for the separation bubble case. It showed very good agreement with experiments in terms of the pressure distribution on the wetted surface of the plate but a high suction peak appeared on the bubble boundary, as well as an unsatisfactory bubble shape. In the present study, no improvement has been obtained by using more singularities, unlike the case for thenormal flat plate. For an airfoil with a Kriiger flap, some satisfactory results can be obtained with a model using two doublets, especially at high angles of attack. Results could be improved at moderate incidence with a better estimate of the bubble shape that forms between the flap and the airfoil lower surface. Thus, it is recommended that flow visualization studies be conducted in the future to evaluate this shape. Experiments should also be carefully repeated in order to assess the accuracy of the model.
Some weighted Hardy-type inequalities and applications
Creators: name: Rychkov, Vyacheslav S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D10 (Primary) 47B38, 46E30, 46E35 (Secondary)

description: We study the two-weighted estimate \[ \bigg\|\sum_{k=0}^na_k(x)\int_0^xt^kf(t)dt|L_{q,v}(0,\infty)\bigg\|\leq c\|f|L_{p,u}(0,\infty)\|,\tag{$*$} \] where the functions $a_k(x)$ are not assumed to be positive. It is shown that for $1
description: 15 pages
Όρια έξω από τα κάδρα, ένα εκπαιδευτικό πρόγραμμα ελευθέρου χρόνου για ενήλικες στο MOMus Μουσείο Φωτογραφίας Θεσσαλονίκης
Creators: name: Παπακωνσταντίνου, Αικατερίνη Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Μουσειακή εκπαίδευση
Δια βίου μάθηση
Φωτογραφία
Museum education
Lifelong learning
Photography

description: Η εργασία διαπραγματεύεται ζητήματα μουσειακής εκπαίδευσης και διά βίου μάθησης παρουσιάζοντας μια ολοκληρωμένη πρόταση ενός εκπαιδευτικού προγράμματος ελεύθερου χρόνου για μεγαλύτερους ενήλικες. Το πρόγραμμα σχεδιάστηκε στα πλαίσια της έκθεσης 7ης Biennale Σύγχρονης Τέχνης Θεσσαλονίκης με θέμα «Στάση», αξιοποιώντας τα έργα δύο από τους καλλιτέχνες που φιλοξενούσε το μουσείο, του Γιώργου Δεπόλλα με τη σειρά «O Ξένος» και του Γιάννη Παντελίδη με τη σειρά «Άγνωστα Όρια». Σκοπός του προγράμματος ήταν οι συμμετέχοντες να έρθουν σε επαφή με τη φωτογραφία στα πλαίσια της σύγχρονης τέχνης, να γνωρίσουν το έργο των συγκεκριμένων καλλιτεχνών και να αναλύσουν τις έννοιες και τα νοήματα των φωτογραφιών, μέσα από συζήτηση και βιωματικές δράσεις. Μέσω των δράσεων, κλήθηκαν να εκφραστούν δημιουργικά αποτυπώνοντας ενεργά τις σκέψεις και τα συναισθήματά τους. Το εκπαιδευτικό πρόγραμμα εντόπισε την ανάγκη των ενηλίκων για μουσειακές δράσεις με βιωματικό χαρακτήρα, οι οποίες τους προσφέρουν έναν εναλλακτικό τρόπο αξιοποίησης του ελεύθερου χρόνου και μια ευκαιρία να εκφράσουν ζητήματα που τους απασχολούν.
description: The dissertation deals with issues of museum education and lifelong learning by presenting a comprehensive proposal for a leisure-time educational program for older adults. The program was designed in the framework of the exhibition 7th Biennale of Contemporary Art of Thessaloniki on "Stasis", utilizing the works of two of the artists who hosted the museum, George Depollas in the series "The Outsider" and Yiannis Pantelidis in the series "Unknown Limits". The aim of the program for the participants was to have an initial contact with the art of photography in the context of contemporary art, to get to know the work of the specific artists and to analyze the concept and meanings of the photographs, through discussion and experiential actions. Through the actions, they were invited to express themselves creatively by actively capturing their thoughts and feelings. The educational program identified the need for adults for experiential museum actions, which offer them an alternative way of using leisure time and an opportunity to express issues that concern them.
description: Σε συνεργασία με: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Elicitation probing for rare stems
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio file VP-070412-08: Elicitation of phonologically plausible combinations of Hupa sounds, attempting to identify rare stems that might not occur in texts very often. This method had been suggested by Michael Krauss (University of Alaska) based on his own fieldwork experience.
Σχολιασμένη διερμηνεία στο πλαίσιο της πρακτικής άσκησης της κατεύθυνσης διερμηνείας του ΔΠΜΣ Διερμηνείας και Μετάφρασης με έμφαση στη διερμηνεία στο ραδιόφωνο
Creators: name: Αθανασάκη, Σοφία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Διερμηνεία
Πρακτική άσκηση
Διερμηνεία στο ραδιόφωνο
Interpreting
Internship
Radio Interpreting

description: Σκοπός της διπλωματικής εργασίας ήταν ο σχολιασμός της υποχρεωτικής πρακτικής που διεξήχθη στα πλαίσια του Διατμηματικού Προγράμματος Μεταπτυχιακών Σπουδών Διερμηνείας και Μετάφρασης (Κατεύθυνση Διερμηνείας). Αρχικά, έγινε μια συνοπτική αναφορά στον τομέα της διερμηνείας γενικότερα και ακολούθησε η θεωρητική προσέγγιση της διερμηνείας στα Μέσα Μαζικής Επικοινωνίας και ειδικότερα στο ραδιόφωνο, με την οποία ασχολήθηκε η συντάκτρια της παρούσας διπλωματικής εργασίας κατά τη διάρκεια της πρακτικής της. Επιπλέον, παρατέθηκαν αναλυτικά οι εκδηλώσεις κατά τις οποίες διεξήχθη η πρακτική άσκηση, έγινε περιγραφή όλων των σταδίων προετοιμασίας και διεξαγωγής της κάθε διερμηνείας, και τέλος αναφέρθηκαν οι εκάστοτε δυσκολίες και οι τρόποι αντιμετώπισής τους, καθώς και σημεία που χρήζουν ιδιαίτερης μνείας.
description: The aim of the thesis was the annotation of the compulsory interpreting internship, which took place in the framework of the Joint Postgraduate Studies Programme (J.P.P.S.) “Conference Interpreting and Translation” (degree: Interpreting). At first, we mentioned briefly some important elements of the interpreting field in general and afterwards a more theoretical approach followed on interpreting in media and especially in radio (subject of the author’s internship). Moreover, the events in which the internship took place were mentioned in detail; all preparation and procedure stages were described; comments were made on any kind of difficulties that appeared during internship and possible solutions were suggested. Finally, we analyzed issues of special importance.
Word Associations: An Insight into Verbal Behavior Patterns in Greek as L1 and L2
Creators: name: Μπέτσιου, Εμμανουέλα Χριστίνα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Λεκτικοί Συνειρμοί
Νοητικό Λεξικό
Ελληνικά
Verbal Behavior Patterns
Mental Lexicon
Greek

description: The present paper aims to investigate the types of verbal behavior patterns that native and nonnative speakers of Greek tend to make in Greek as L1 and L2, respectively, while also to shed light on whether or not the frequency of prompt words exerts an influential role on the type of response provision. The word association test was administered to a group of L2 adult learners of Greek as well as to a group of three classes of L1 primary school children – fourth, fifth and sixth graders. Both L1 and L2 sets were at the same level of language competence (B1-B2). The findings of this survey indicate that in general both groups had a tendency to form paradigmatic associations. The L1 group exhibited a higher number of paradigmatic and syntagmatic connections as opposed to the L2 informants who demonstrated a stronger tendency for clang responses than the group of natives. The frequency variable seemed to affect response provision mainly for the moderately frequent stimuli, since for both L1 and L2 groups paradigmatic associations decreased, while also syntagmatic and clang responses increased for stimuli of high to moderate frequency. With certain exceptions in the L2 group, these tendencies did not continue to the infrequent stimuli indicating that further research is needed.
description: Η παρούσα εργασία αποσκοπεί στο να εξετάσει τα είδη των λεκτικών συνειρμών που τείνουν να κάνουν οι φυσικοί και μη φυσικοί ομιλητές στην ελληνική ως πρώτη (Γ1) και δεύτερη (Γ2) γλώσσα αντίστοιχα, καθώς επίσης και να ερευνήσει εάν η παράμετρος της συχνότητας των λεκτικών ερεθισμάτων επηρεάζει τις απαντήσεις των συμμετεχόντων. Το τεστ λεκτικών συνειρμών δόθηκε σε τάξεις των ενήλικων Γ2 μαθητών καθώς και σε τρεις τάξεις μαθητών δημοτικής εκπαίδευσης –τετάρτη, πέμπτη και έκτη- με μητρική γλώσσα τα ελληνικά. Το επίπεδο ελληνομάθειας και των δύο ομάδων είναι Β1-Β2. Τα αποτελέσματα της έρευνας δείχνουν ότι σε γενικές γραμμές και οι δύο ομάδες (Γ1 και Γ2) έτειναν στο σχηματισμό παραδειγματικών μοτίβων. Οι συμμετέχοντες με μητρική γλώσσα τα ελληνικά παρουσίασαν μεγαλύτερο αριθμό παραδειγματικών και συνταγματικών συνειρμών σε αντίθεση με τους ενήλικες Γ2 μαθητές ελληνικών, οι οποίοι είχαν μεγαλύτερη τάση για φωνολογικά μοτίβα σε σχέση με την Γ1 ομάδα. Οι απαντήσεις βρέθηκαν ότι επηρεάζονταν κυρίως από την κατηγορία των σχετικά συχνών λεκτικών ερεθισμάτων, καθώς και για τις δύο ομάδες οι παραδειγματικοί συνειρμοί μειώθηκαν, ενώ οι συνταγματικοί και φωνολογικοί αυξήθηκαν κατά τη μετάβαση από τις λέξεις υψηλής συχνότητας στις σχετικά συχνές. Πλην συγκεκριμένων εξαιρέσεων στην ομάδα των μη φυσικών ομιλητών, οι τάσεις αυτές δεν συνεχίστηκαν στην κατηγορία των λεκτικών ερεθισμάτων χαμηλής συχνότητας υποδεικνύοντας την ανάγκη για περαιτέρω έρευνα.
An activation-clearance model for Plasmodium vivax malaria
Creators: name: Mehra, Somya
name: McCaw, James M.
name: Flegg, Mark B.
name: Taylor, Peter G.
name: Flegg, Jennifer A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences
subject: 92D30

description: Malaria is an infectious disease with an immense global health burden. Plasmodium vivax is the most geographically widespread species of malaria. Relapsing infections, caused by the activation of liver-stage parasites known as hypnozoites, are a critical feature of the epidemiology of Plasmodium vivax. Hypnozoites remain dormant in the liver for weeks or months after inoculation, but cause relapsing infections upon activation. Here, we introduce a dynamic probability model of the activation-clearance process governing both potential relapses and the size of the hypnozoite reservoir. We begin by modelling activation-clearance dynamics for a single hypnozoite using a continuous-time Markov chain. We then extend our analysis to consider activation-clearance dynamics for a single mosquito bite, which can simultaneously establish multiple hypnozoites, under the assumption of independent hypnozoite behaviour. We derive analytic expressions for the time to first relapse and the time to hypnozoite clearance for mosquito bites establishing variable numbers of hypnozoites, both of which are quantities of epidemiological significance. Our results extend those in the literature, which were limited due to an assumption of non-independence. Our within-host model can be embedded readily in multi-scale models and epidemiological frameworks, with analytic solutions increasing the tractability of statistical inference and analysis. Our work therefore provides a foundation for further work on immune development and epidemiological-scale analysis, both of which are important for achieving the goal of malaria elimination.
description: This is a pre-copyedit version of an article published in Bulletin of Mathematical Biology. The final authenticated version is available online at: https://doi.org/10.1007/s11538-020-00706-1
Stationary subsets of functional Menger $\cap$-algebras of multiplace functions
Creators: name: Dudek, Wieslaw A.
name: Trokhimenko, Valentin S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 20N15; 08N05

description: A functional Menger $\cap$-algebra is a set of n-place functions containing n projections and closed under the so-called Menger's compositions of n-place functions and the set-theoretic intersection of functions. We give the abstract characterization for these subsets of functional Menger $\cap$-algebras which contain functions with fixed points.
description: 10 pages
A new contouring algorithm for the U.B.C. controller
Creators: name: Seethaler, Rudolf
Publisher: name: University of British Columbia
Year: 2009

description: Conventional servo controllers are not able to provide the high degree of accuracy that is required in many robotic and contour machining applications. New control algorithms are usually difficult to implement in practical machining or robotics environments, since they require extremely fast computer hardware, or a very exact model of the plant. Such algorithms also usually assume that the drive system may be modeled as a linear system; unfortunately this assumption is often violated during contouring operations. The objective of the work reported in this thesis is to utilize the special architecture of the UBC controller to allow the development of control algorithms that allow high speed contouring operations to be undertaken with automatic, real time, error control. The system has been simulated and tested in situations which result in significant non linearity, (sharp corner tracking being a particularly important example.) The results of these tests indicate that the system is able to achieve contouring performance that is better than other systems described in the literature to date.
Πως διακυμάνθηκε η τιμή και η παραγωγή του ελαιόλαδου στην Ελληνική αγορά την τελευταία 5ετία , Εισαγωγές – Εξαγωγές
Creators: name: Χαραλαμπίδης, Χρήστος Αναστασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Τιμή Ελαιόλαδου
Εισαγωγές Ελαιόλαδου
Εξαγωγές Ελαιόλαδου
Olive oil Price
Olive oil Imports
Olive oil Exports

description: Στην εργασία ανέλυσα ότι έχει να κάνει με το ελαιόλαδο. Συγκεκριμένα, συγκέντρωσα στοιχεία από την Ευρωπαϊκή Ένωση και την Ελληνική Στατιστική Αρχή για την παραγωγή, την κατανάλωση, τις τιμές τις Εισαγωγές και τις Εξαγωγές του ελαιόλαδου και τις σύγκρινα με τις χώρες τις Ιταλίας και της Ισπανίας την τελευταία 5ετία. Το ελαιόλαδο είναι βασικό αγαθό για κάθε νοικοκυριό , αγαθό με ιστορία το οποίο έχει πλούσια οφέλη για τον καθένα μας .Πιο συγκεκριμένα, παρατήρησα ότι οι τιμές του Ελληνικού ελαιόλαδου τείνει τα τελευταία δύο χρόνια να έχει πτωτική τάση, ίδιες τιμές με την Ισπανία και οι τιμές της Ιταλίας να είναι υψηλότερες. Η παραγωγή ελαιόλαδου τείνει να είναι σταθερή με κάποιες αυξομειώσεις. Οι Εξαγωγές αυξήθηκαν την τελευταία 5ετία σε ποσότητα και αντίστοιχα στις τιμές. Οι Εισαγωγές από το 2016 μέχρι το 2018 μειώθηκαν σε ποσότητα και σε τιμές. Τέλος, βρήκα τις εταιρείες που παράγουν και εμπορεύονται ελαιόλαδο και ανέλυσα κάποιους χρηματοοικονομικούς δείκτες.
description: In this dissertation I analyzed in detail the history of olive oil. Specifically, I gathered information from the European Union and the Greek statistical authority on the production, consumption, prices related to the imports and exports of olive oil. In addition, I have been comparing prices with Italy and Spain for the last 5 years. It is important to note that olive oil is a key ingredient in every household with a centuries-old history that has rich benefits for every person. More specifically, I noticed that the prices of Greek olive oil have decreased in the last 2 years, similar prices to those of Spain, while the prices of Italy reach higher prices. Olive oil production tends to be stable with some fluctuations.
Elliptic Quantum Group U_{q,p}(\hat{sl}_2), Hopf Algebroid Structure and Elliptic Hypergeometric Series
Creators: name: Konno, Hitoshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B37; 81R10

description: We propose a new realization of the elliptic quantum group equipped with the H-Hopf algebroid structure on the basis of the elliptic algebra U_{q,p}(\hat{sl}_2). The algebra U_{q,p}(\hat{sl}_2) has a constructive definition in terms of the Drinfeld generators of the quantum affine algebra U_q(\hat{sl}_2) and a Heisenberg algebra. This yields a systematic construction of both finite and infinite-dimensional dynamical representations and their parallel structures to U_q(\hat{sl}_2). In particular we give a classification theorem of the finite-dimensional irreducible pseudo-highest weight representations stated in terms of an elliptic analogue of the Drinfeld polynomials. We also investigate a structure of the tensor product of two evaluation representations and derive an elliptic analogue of the Clebsch-Gordan coefficients. We show that it is expressed by using the very-well-poised balanced elliptic hypergeometric series 12V11.
description: 42 pages
Transformation of Spin in Quantum Reference Frames
Creators: name: Mikusch, Marion
name: Barbado, Luis C.
name: Brukner, Časlav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In physical experiments, reference frames are standardly modelled through a specific choice of coordinates used to describe the physical systems, but they themselves are not considered as such. However, any reference frame is a physical system that ultimately behaves according to quantum mechanics. We develop a framework for rotational (i.e. spin) quantum reference frames, with respect to which quantum systems with spin degrees of freedom are described. We give an explicit model for such frames as systems composed of three spin coherent states of angular momentum $j$ and introduce the transformations between them by upgrading the Euler angles occurring in classical $\textrm{SO}(3)$ spin transformations to quantum mechanical operators acting on the states of the reference frames. To ensure that an arbitrary rotation can be applied on the spin we take the limit of infinitely large $j$, in which case the angle operator possesses a continuous spectrum. We prove that rotationally invariant Hamiltonians (such as that of the Heisenberg model) are invariant under a larger group of quantum reference frame transformations. Our result is the first development of the quantum reference frame formalism for a non-Abelian group.
description: 10 pages main text, plus appendices, 5 figures. Correction of the arXiv abstract and inclusion of the journal information
Σύγχρονα Εργαλεία Επεξεργασίας Ακουστικού Σήματος στη Μουσική Παραγωγή
Creators: name: Δημητρούδης, Iωάννης Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Επεξεργασία ήχου
Μουσική Παραγωγή
Σύγχρονα εργαλεία επεξεργασίας
Sound processing
Music Production
Contemporary processing tools

description: Σκοπός της εργασίας ήταν η κατανόηση της εξέλιξης, αλλά και της εξέλιξης της χρήσης των εργαλείων επεξεργασίας του ακουστικού σήματος στη σύγχρονη μουσική παραγωγή. Στο πρώτο κεφάλαιο τίθεται το θεωρητικό, αλλά και κοινωνικό – οικονομικό πλαίσιο μέσα στο οποίο οι διαδικασίες αυτές λαμβάνουν χώρα, μέσω της προσέγγισης σύγχρονων θεωρήσεων. Στη συνέχεια πραγματοποιείται μία ιστορική εξέλιξη της τεχνολογίας της μουσικής παραγωγής, με συνεχή αντιπαράθεση των σύγχρονων στοιχείων με τις αντίστοιχες εξελίξεις που παρουσιάστηκαν σε βάθος μισού αιώνα. Τέλος, η μορφή των σύγχρονων εργαλείων επεξεργασίας, αλλά και ο τρόπος χρήσης τους, εξετάζονται πειραματικά με τη σύγκριση, μέσω ειδικού λογισμικού, των ιδιοτήτων του ακουστικού σήματος της παραγωγής του επακριβώς ίδιου μουσικού υλικού, προερχόμενου από δύο διακριτές χρονικές στιγμές.
description: The aim of the present thesis was to understand the development and the throughout the years difference in the use of sound processing tools during the progress of music production. In the first chapter, various topics regarding the modern music industry are being illustrated. Moreover, the throughout the years development of the technology behind the most common sound processing tools is being examined during the process of this thesis and juxtapositions are being made with the same developing process that took part in the past. Finally, conclusions are being tested with the use of data derived from analyzing the acoustic signal of specific examples.
description: Σε συνεργασία με: Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)