cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Merging of Dirac points and Floquet topological transitions in AC driven graphene
Creators: name: Delplace, Pierre
name: Gómez-León, Álvaro
name: Platero, Gloria
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the effect of an in-plane AC electric field coupled to electrons in the honeycomb lattice and show that it can be used to manipulate the Dirac points of the electronic structure. We find that the position of the Dirac points can be controlled by the amplitude and the polarization of the field for high frequency drivings, providing a new platform to achieve their merging, a topological transition which has not been observed yet in electronic systems. Importantly, for lower frequencies we find that the multi-photon absorptions and emissions processes yield the creation of additional pairs of Dirac points. This provides an additional method to achieve the merging transition by just tuning the frequency of the driving. Our approach, based on Floquet formalism, is neither restricted to specific choice of amplitude or polarization of the field, nor to a low energy approximation for the Hamiltonian.
description: 5 pages + supplementary materials
title: Διαμόρφωση πλατείας και σχολικού συγκροτήματος στην Παιανία Αττικής
Creators: name: Σταματη Αγγελικη
Publisher: name: Technical University of Crete
Year: 2018

description:  Η πόλη της Παιανίας είναι μία πόλη της Αττικής η οποία εξελίχθηκε οργανικά στο πέρασμα των χρόνων με αποτέλεσμα να παρατηρούνται διαφορετικές και αντικρουόμενες πολεοδομικές προσεγγίσεις. Στην διπλωματική επιδιώκεται η ενοποίηση των επιμέρους υπολειμματικών καταστάσεων μέσω της αναδιοργάνωσης του δικτύου των δημοσίων χώρων, αλλά κυρίως μέσω του επανασχεδιασμού της κεντρικής πλατείας και του υφιστάμενου σχολείου, το οποίο επαναχρησημοποιείται αλλά και επεκτείνεται υπογείως κάτω από την πλατεία, διαμορφώνοντας αίθουσες διδασκαλίας, αίθρια, πολιτιστικούς χώρους οι οποίοι αλληλεπιδρούν με το γύρω περιβάλλον της πλατείας.
Quantum Correlations are Tightly Bound by the Exclusivity Principle
Creators: name: Yan, Bin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is a fundamental problem in physics of what principle limits the correlations as predicted by our current description of nature, based on quantum mechanics. One possible explanation is the "global exclusivity" principle recently discussed in Phys. Rev. Lett. 110, 060402 (2013). In this work we show that this principle actually has a much stronger restriction on the probability distribution. We provide a tight constraint inequality imposed by this principle and prove that this principle singles out quantum correlations in scenarios represented by any graph. Our result implies that the exclusivity principle might be one of the fundamental principles of nature.
description: 5 pages, 1 figure
Multidimensionally-constrained relativistic mean field models and potential energy surfaces of actinide nuclei
Creators: name: Lu, Bing-Nan
name: Zhao, Jie
name: Zhao, En-Guang
name: Zhou, Shan-Gui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: By breaking both the axial and the spatial reflection symmetries, we develop multidimensionally constrained relativistic mean field (MDC-RMF) models. The nuclear shape is assumed to be invariant under the reversion of $x$ and $y$ axes, i.e., the intrinsic symmetry group is $V_{4}$ and all shape degrees of freedom $β_{λμ}$ with even $μ$, such as $β_{20}$, $β_{22}$, $β_{30}$, $β_{32}$, $β_{40}$, $\dots$, are included self-consistently. The Dirac wave functions are expanded in an axially deformed harmonic oscillator basis. The RMF functional can be one of the following four forms: the meson exchange or point-coupling nucleon interactions combined with the nonlinear or density-dependent couplings. The pairing effects are taken into account with the BCS approach. The 1-, 2-, and 3-D potential energy surfaces (PES's) of $^{240}$Pu are illustrated for numerical checks and for the study of the effect of the triaxiality on the fission barriers. Potential energy curves of even-even actinide nuclei around the first and second fission barriers are studied systematically. Besides the first ones, the second fission barriers in these nuclei are also lowered considerably by the triaxial deformation. This lowering effect is independent of the effective interactions used in the RMF functionals. Further discussions are made about different predictions on the effect of the triaxiality between the macroscopic-microscopic and MDC-RMF models, possible discontinuities on PES's from self-consistent approaches, and the restoration of broken symmetries. MDC-RMF models give reasonably good description of fission barriers of even-even actinide nuclei. It is important to include both the nonaxial and the reflection asymmetric shapes simultaneously for the study of PES's and fission barriers of actinide nuclei and of those in unknown mass regions such as, e.g., superheavy nuclei.
description: 16 pages, 8 figures, 2 tables; version published in Phys. Rec. C; due to the limitation "The abstract field cannot be longer than 1,920 characters", the abstract appearing here is slightly shorter than that in the PDF file
Stringent constraint on neutrino Lorentz-invariance violation from the two IceCube PeV neutrinos
Creators: name: Borriello, Enrico
name: Chakraborty, Sovan
name: Mirizzi, Alessandro
name: Serpico, Pasquale Dario
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been speculated that Lorentz-invariance violation (LIV) might be generated by quantum-gravity (QG) effects. As a consequence, particles may not travel at the universal speed of light. In particular, superluminal extragalactic neutrinos would rapidly lose energy via the bremssthralung of electron-positron pairs (nu -> nu e+ e-), damping their initial energy into electromagnetic cascades, a figure constrained by Fermi-LAT data. We show that the two cascade neutrino events with energies around 1 PeV recently detected by IceCube -if attributed to extragalactic diffuse events, as it appears likely- can place the strongest bound on LIV in the neutrino sector, namely delta =(v^2-1) < O(10^(-18)), corresponding to a QG scale M_QG ~ 10^5 M_Pl (M_QG >~ 10^(-4) M_Pl) for a linear (quadratic) LIV, at least for models inducing superluminal neutrino effects (delta > 0).
description: 4 pages
การพัฒนา Line Chatbot สําหรับงานบริการด้านงานวิจัย กรณีศึกษาสถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Creators: name: มนต์ทิชา รัตนพันธ์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2023
Subjects: Program Development
Chatbot, research services work, LineChatbot

description: Journal of Applied Research on Science and Technology (JARST), 22, 1, 78-89
title: Κέντρο πλαστικών και παραστατικών τεχνών στις πρώην βιομηχανικές εγκαταστάσεις Θειωρυχείων Μήλου
Creators: name: Βενιου Μαρια
Publisher: name: Technical University of Crete
Year: 2018

description: Η εργασία αφορά τις βιομηχανικές εγκαταστάσεις των Θειωρυχείων Μήλου. Στόχος είναι η αξιοποίηση και η ανάδειξη ενός κτιρίου βιομηχανικής κληρονομιάς άρρηκτα συνδεδεμένου με τη γεωλογική και παραγωγική ιστορία του νησιού. Τα Θειωρυχεία Μήλου βρίσκονται σε μια αρκετά απομακρυσμένη για τα δεδομένα του νησιού περιοχή, το Παλιόρεμα. Για να επανακάμψει ο τόπος αυτός από τις δυσάρεστες μνήμες και για να αποτελέσει ένα σημαντικό ελκυστή χρειάζεται ισχυρά στοιχεία που θα τον κάνουν προσιτό στους κατοίκους ή στους επισκέπτες του νησιού. Κύριο μέλημα αποτελεί η μετατροπή του χώρου αυτού σε ένα τόπο μνήμης, δημιουργίας και ψυχικής κάθαρσης. Για την επίτευξη του στόχου αυτού προτείνεται η επαναλειτουργία των εγκαταστάσεων με εκπαιδευτικό, ψυχαγωγικό και πολιτισμικό χαρακτήρα. Οι ήδη υπάρχουσες εγκαταστάσεις να επαναλειτουργήσουν ως εργαστήρια πλαστικών τεχνών και το νέο κτίριο που σχεδιάζεται καλείται να στεγάσει παραστατικές τέχνες. Η δημιουργία ενός καλλιτεχνικού κέντρου αποσκοπεί στο να λειτουργεί όλο το χρόνο και για τους μόνιμους κατοίκους και για τους σπουδαστές και για τους εφήμερους επισκέπτες.
ChemDuino Calorimetry to Determine the Enthalpy Change of Neutralization of an Acid_Base Reaction: Making a Familiar Experiment Greener
Creators: name: Prabowo, N. K.
name: Paristiowati, M.
name: Irwanto, I.
name: Afrizal
name: Yusmaniar
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics Education (physics.ed-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In thermochemistry experiments, a large volume and relatively high concentration of chemicals are often used to get a significant temperature change using an analogue thermometer. A greener experimental protocol is developed as an alternative using modern microcontroller boards, ChemDuino. The aim of this research is to develop a low cost and pocket sized prototype for measuring temperature of solutions using Arduino Uno and sensor based on green chemistry and Do It Yourself methods. The construction of ChemDuino for temperature sensing is made in the simplest manner for individuals with little knowledge of electronics. The details of all components are stipulated in this paper. This research was conducted in three phases, which includes preliminary, prototype development, and assessment phase. The device is used to determine the enthalpy change of neutralization of NaOH and HCl solution. The enthalpy change of neutralization, kJ/mol at 25.0 °C from literature is -57.13 kJ/mol, whereas the enthalpy change of neutralization, kJ/mol at 25.0 °C from the experiment using ChemDuino Calorimetry is -56.87 kJ/mol with the estimated standard deviation of 1.9. The device has successfully measured the temperature change of the reaction at a relatively lower concentration. ChemDuino Calorimetry has a great potential, because of its reliability and accuracy in measurements, inexpensive setup, and interconnectivity.
description: 7 pages, 4 figures, 2 tables
Gravitational waves from the sound of a first order phase transition
Creators: name: Hindmarsh, Mark
name: Huber, Stephan J.
name: Rummukainen, Kari
name: Weir, David J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report on the first 3-dimensional numerical simulations of first-order phase transitions in the early universe to include the cosmic fluid as well as the scalar field order parameter. We calculate the gravitational wave (GW) spectrum resulting from the nucleation, expansion and collision of bubbles of the low-temperature phase, for phase transition strengths and bubble wall velocities covering many cases of interest. We find that the compression waves in the fluid continue to be a source of GWs long after the bubbles have merged, a new effect not taken properly into account in previous modelling of the GW source. For a wide range of models the main source of the GWs produced by a phase transition is therefore the sound the bubbles make.
description: 5 pages, 4 figures; v2: Old Fig. 1 removed for space, error corrected in fluid velocity power spectra normalisation, discussion of source modelling significantly expanded, references added, conclusions unchanged, published in PRL
title: Η συμβολή του χρώματος στον εξελληνισμό του "Μοντέρνου"
Creators: name: Ματιατου Αμαλια
Publisher: name: Technical University of Crete
Year: 2018

description: Σκοπός της εργασίας είναι η μελέτη της
συμβολής του χρώματος στον εξελληνισμό
του μοντέρνου. Παράλληλα εξετάζονται οι
προσωπικές επιρροές των αρχιτεκτόνων
αλλά και οι σχέσεις και οι συνεργασίες
που ανέπτυσσαν με τους ζωγράφους, στο
πλαίσιο της ίδιας επιδίωξης.
Το χρώμα εμφανίζεται από την προϊστορική
εποχή αποτελώντας όχι μόνο αισθητική
αλλά και κοινωνική ανάγκη. Στην ιστορία
της αρχιτεκτονικής κατέχει μείζονα σημασία,
με εξαίρεση όμως το μοντέρνο κίνημα.
Μεταξύ της κυριαρχίας του λευκού στο
μοντέρνου, εμφανίζονται σημαντικές
«οάσεις χρώματος» με έντονες και καθαρές
αποχρώσεις, λόγω της έμφασης που δίνεται
στη σύνδεση αρχιτεκτονικής και χρώματος
από τη Σχολή του Bauhaus. Το μοντέρνο
στην Ελλάδα κυριαρχεί μεσοπολεμικά, το
’30-’40 και μεταπολεμικά, το ’50-’65. Σε
αυτές τις περιόδους, υπάρχουν Έλληνες
αρχιτέκτονες που επηρεασμένοι από το
μοντέρνο κίνημα, εντάσσουν το χρώμα
στα έργα τους: οι Δημήτρης Πικιώνης,
Νίκος Μητσάκης, Κυριάκος (Κυριακούλης)
Παναγιωτάκος, μεσοπολεμικά και οι Νίκος
Βαλσαμάκης, Γιάννης Λιάπης, Κωνσταντίνος
Δεκαβάλλας και Δημήτρης Φατούρος,
μεταπολεμικά. Ωστόσο τα χρώματα του
μοντέρνου που χρησιμοποιούνται στον
ελληνικό χώρο, εμφανίζονται σε γαιώδεις
και ήπιες αποχρώσεις. Κυρίως την εποχή
του μεσοπολέμου, έχει διαπιστωθεί ότι η
συνεργασία αρχιτεκτόνων με ζωγράφους
οδήγησε σε σημαντικά αποτελέσματα
στην ογκοπλαστική διαμόρφωση και το
χρώμα των κτιρίων. Τέλος επισημαίνεται η
λειτουργία του χρώματος ως γεφύρωση του
μοντερνισμού με το νεοκλασικισμό και την
ελληνική παράδοση.
Little flavor: A model of weak-scale flavor physics
Creators: name: Sun, Sichun
name: Kaplan, David B.
name: Nelson, Ann E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a model of quarks which identifies the large global symmetries of little Higgs models with the global flavor symmetries that arise in a deconstruction of the extra-dimensional 'topological insulator' model of flavor. The nonlinearly realized symmetries of little Higgs theories play a critical role in determining the flavor structure of fermion masses and mixing. All flavor physics occurs at the few TeV scale in this model, yet flavor changing neutral currents arising from the new physics are naturally smaller than those generated radiatively in the standard model, without having to invoke minimal flavor violation.
description: 17 pages, 3 figures. Minor revisions to align with version accepted for publication, including title, and additional discussion about phenomenology
Logical Characterization of Contextual Hidden-Variable Theories based on Quantum Set Theory
Creators: name: Ozawa, Masanao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Logic (math.LO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: While non-contextual hidden-variable theories are proved to be impossible, contextual ones are possible. In a contextual hidden-variable theory, an observable is called a beable if the hidden-variable assigns its value in a given measurement context specified by a state and a preferred observable. Halvorson and Clifton characterized the algebraic structure of beables as a von Neumann subalgebra, called a beable subalgebra, of the full observable algebra such that the probability distribution of every observable affiliated therewith admits the ignorance interpretation. On the other hand, we have shown that for every von Neumann algebra there is a unique set theoretical universe such that the internal "real numbers" bijectively correspond to the observables affiliated with the given von Neumann algebra. Here, we show that a set theoretical universe is associated with a beable subalgebra if and only if it is ZFC-satisfiable, namely, every theorem of ZFC set theory holds with probability equal to unity. Moreover, we show that there is a unique maximal ZFC-satisfiable subuniverse "implicitly definable", in the sense of Malament and others, by the given measurement context. The set theoretical language for the ZFC-satisfiable universe, characterized by the present work, rigorously reconstructs Bohr's notion of the "classical language" to describe the beables in a given measurement context.
description: In Proceedings QPL 2022, arXiv:2311.08375
Origin of the insulating state in honeycomb iridates and rhodates
Creators: name: Mazin, I. I.
name: Manni, S.
name: Foyevtsova, K.
name: Jeschke, Harald O.
name: Gegenwart, P.
name: Valenti, Roser
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A burning question in the emerging field of spin-orbit driven insulating iridates, such as Na2IrO3 and Li2IrO3 is whether the observed insulating state should be classified as a Mott-Hubbard insulator derived from a half-filled relativistic j_eff=1/2 band or as a band insulator where the gap is assisted by spin-orbit interaction, or Coulomb correlations, or both. The difference between these two interpretations is that only for the former, strong spin-orbit coupling (lambda >~ W, where W is the band width) is essential. We have synthesized the isostructural and isoelectronic Li2RhO3 and report its electrical resistivity and magnetic susceptibility. Remarkably it shows insulating behavior together with fluctuating effective S=1/2 moments, similar to Na2IrO3 and Li2IrO3, although in Rh4+ (4d5) the spin-orbit coupling is greatly reduced. We show that this behavior has non-relativistic one-electron origin (although Coulomb correlations assist in opening the gap), and can be traced down to formation of quasi-molecular orbitals, similar to those in Na2IrO3.
description: 7 pages, 7 figures
Confronting brane inflation with Planck and pre-Planck data
Creators: name: Ma, Yin-Zhe
name: Huang, Qing-Guo
name: Zhang, Xin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we compare brane inflation models with the Planck data and the pre-Planck data (which combines WMAP, ACT, SPT, BAO and H0 data). The Planck data prefer a spectral index less than unity at more than 5σconfidence level, and a running of the spectral index at around 2σconfidence level. We find that the KKLMMT model can survive at the level of 2σonly if the parameter $β$ (the conformal coupling between the Hubble parameter and the inflaton) is less than $\mathcal{O}(10^{-3})$, which indicates a certain level of fine-tuning. The IR DBI model can provide a slightly larger negative running of spectral index and red tilt, but in order to be consistent with the non-Gaussianity constraints from Planck, its parameter also needs fine-tuning at some level.
description: 10 pages, 8 figures
Well-posedness of the Stokes-Coriolis system in the half-space over a rough surface
Creators: name: Dalibard, Anne-Laure
name: Prange, Christophe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper is devoted to the well-posedness of the stationary $3$d Stokes-Coriolis system set in a half-space with rough bottom and Dirichlet data which does not decrease at space infinity. Our system is a linearized version of the Ekman boundary layer system. We look for a solution of infinite energy in a space of Sobolev regularity. Following an idea of Gérard-Varet and Masmoudi, the general strategy is to reduce the problem to a bumpy channel bounded in the vertical direction thanks a transparent boundary condition involving a Dirichlet to Neumann operator. Our analysis emphasizes some strong singularities of the Stokes-Coriolis operator at low tangential frequencies. One of the main features of our work lies in the definition of a Dirichlet to Neumann operator for the Stokes-Coriolis system with data in the Kato space $H^{1/2}_{uloc}$.
description: 64 pages
title: Συγκριτική ανάλυση μεθόδων επίλυσης του προβλήματος βέλτιστης ροής φορτίου για μεγάλα διασυνδεδεμένα συστήματα ηλεκτρικής ενέργειας
Creators: name: Βισκαδούρος Γεώργιος
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
Leggett-Garg Inequalities
Creators: name: Emary, Clive
name: Lambert, Neill
name: Nori, Franco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In contrast to the spatial Bell's inequalities, which probe entanglement between spatially-separated systems, the Leggett-Garg inequalities test the correlations of a single system measured at different times. Violation of a genuine Leggett-Garg test implies either the absence of a realistic description of the system or the impossibility of measuring the system without disturbing it. Quantum mechanics violates the inequalities on both accounts and the original motivation for these inequalities was as a test for quantum coherence in macroscopic systems. The last few years has seen a number of experimental tests and violations of these inequalities in a variety of microscopic systems such as superconducting qubits, nuclear spins, and photons. In this article, we provide an introduction to the Leggett-Garg inequalities and review these latest experimental developments. We discuss important topics such as the significance of the non-invasive measurability assumption, the clumsiness loophole, and the role of weak measurements. Also covered are some recent theoretical proposals for the application of Leggett-Garg inequalities in quantum transport, quantum biology and nano-mechanical systems.
description: 49 pages; 7 figs
title: Ανάλυση και εφαρμογή αλγόριθμου αντιστροφής για εντοπισμό διπόλου πηγής από εγκεφαλογράφημα
Creators: name: Σπηλιόπουλος Ιωάννης
Publisher: name: Technical University of Crete
Year: 2009

description: Μη διαθέσιμο
Asteroseismology of Solar-Type and Red-Giant Stars
Creators: name: Chaplin, William J.
name: Miglio, Andrea
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We are entering a golden era for stellar physics driven by satellite and telescope observations of unprecedented quality and scope. New insights on stellar evolution and stellar interiors physics are being made possible by asteroseismology, the study of stars by the observation of natural, resonant oscillations. Asteroseismology is proving to be particularly significant for the study of solar-type and red-giant stars. These stars show rich spectra of solar-like oscillations, which are excited and intrinsically damped by turbulence in the outermost layers of the convective envelopes. In this review we discuss the current state of the field, with a particular emphasis on recent advances provided by the Kepler and CoRoT space missions and the wider significance to astronomy of the results from asteroseismology, such as stellar populations studies and exoplanet studies.
description: The following paper will appear in the 2013 volume of Annual Reviews of Astronomy and Astrophysics (88 pages, 7 figures; references updated; further corrections to typos during galley-proof review)
Axler-Zheng type theorem on a class of domains in C^n
Creators: name: Cuckovic, Zeljko
name: Sahutoglu, Sonmez
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47B35, 32A07

description: We prove a version of Axler-Zheng's Theorem on smooth bounded pseudoconvex domains in C^n on which the dbar-Neumann operator is compact.
description: Added Erratum
Dissipation induced non-Gaussian energy fluctuations
Creators: name: Bertin, Eric
name: Holdsworth, Peter C. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The influence of dissipation on the fluctuation statistics of the total energy is investigated through both a phenomenological and a stochastic model for dissipative energy-transfer through a cascade of states. In equilibrium the states obey equipartition and the total energy obeys the central limit theorem, giving Gaussian fluctuations. In the presence of dissipation, the fluctuations can be driven non-Gaussian if there is macroscopic energy transfer from large to small scales. We are thus able to equate the non-Gaussian order parameter fluctuations in model equilibrium systems at criticality with energy fluctuations in these dissipative systems. Energy fluctuations in the phenomenological model map directly onto the 1/f^alpha noise problem and numerical simulations of the stochastic model yield results in qualitative agreement with these predictions.
description: 6 pages, 4 figures, final version
Exotic magnetic anisotropy near digitized dimensional Mott boundary
Creators: name: Jeong, Seung Gyo
name: Kim, Jihyun
name: Min, Taewon
name: Song, Sehwan
name: Oh, Jin Young
name: Noh, Woo-suk
name: Park, Sungkyun
name: Park, Tuson
name: Ok, Jong Mok
name: Lee, Jaekwang
name: Choi, Woo Seok
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magnetic anisotropy of low-dimensional Mott systems exhibits unexpected magnetotransport behavior useful for spin-based quantum electronics. Yet, the anisotropy of natural materials is inherently determined by the crystal structure, highly limiting its engineering. We demonstrate the magnetic anisotropy modulation near a digitized dimensional Mott boundary in artificial superlattices composed of a correlated magnetic monolayer SrRuO3 and nonmagnetic SrTiO3. The magnetic anisotropy is initially engineered by modulating the interlayer coupling strength between the magnetic monolayers. Interestingly, when the interlayer coupling strength is maximized, a nearly degenerate state is realized, in which the anisotropic magnetotransport is strongly influenced by both the thermal and magnetic energy scales. Our results offer a new digitized control for magnetic anisotropy in low-dimensional Mott systems, inspiring promising integration of Mottronics and spintronics.
description: 30 pages
Marmorstatuette von Dorf Wellen a. d. Mosel
Creators: name: Flasch, Adam
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 59 (1876): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
The single-mode description of the integer quantum Hall state with dipole-dipole interaction
Creators: name: Qiu, Rui-Zhi
name: Hu, Zi-Xiang
name: Wan, Xin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A topological phase can often be represented by a corresponding wavefunction (exact eigenstate of a model Hamiltonian) that has a higher underlying symmetry than necessary. When the symmetry is explicitly broken in the Hamiltonian, the model wavefunction fails to account for the change due to the lack of a variational parameter. Here we exemplify the case by an integer quantum Hall system with anisotropic interaction. We demonstrate the recovery of the variational parameter in a single-mode approximation, which is consistent with the recently proposed geometric consideration of the quantum Hall phases.
description: 9 pages, 5 figures
Wilson loops and the geometry of matrix models in AdS_4/CFT_3
Creators: name: Farquet, Daniel
name: Sparks, James
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a general class of supersymmetric AdS_4 x Y_7 solutions of M-theory that have large N dual descriptions as N = 2 Chern-Simons-matter theories on S^3. The Hamiltonian function h_M for the M-theory circle, with respect to a certain contact structure on Y_7, plays an important role in the duality. We show that an M2-brane wrapping the M-theory circle, giving a fundamental string in AdS_4, is supersymmetric precisely at the critical points of h_M, and moreover the value of this function at the critical point determines the M2-brane action. Such a configuration determines the holographic dual of a BPS Wilson loop for a Hopf circle in S^3, and leads to an effective method for computing the Wilson loop on both sides of the correspondence in large classes of examples. We find agreement in all cases, including for several infinite families, and moreover we find that the image h_M(Y_7) determines the range of support of the eigenvalues in the dual large N matrix model, with the critical points of h_M mapping to points where the derivative of the eigenvalue density is discontinuous.
description: 46 pages, 10 figures; v2: discussion changed, references added; published version
title: Ανάπτυξη συστήματος μέτρησης για την 3-διάστατη καταγραφή χώρου από μη-επανδρωμένη εναέρια πλατφόρμα
title: Development of measurement system for 3-dimensional mapping by unmanned aerial platform
Creators: name: Λουκας Γεωργιος
Publisher: name: Technical University of Crete
Year: 2017

description: 3-Διάστατη αποτύπωση χώρου με τη χρήση αισθητήρα LiDAR, ενσωματωμένο σε UAV.
title: Rezension: "Jewish Participation in Municipal Self-Administrations in East-Central Europe"/ Hanna Kozińska-Witt, Marcos Silber. Göttingen: Vandenhoeck & Ruprecht, 2011. ISBN 978-3-525-36937-1
Creators: name: Kuzmany, Börries
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Diese Rezension widmet sich einem der Schwerpunkte des zehnten Bandes des Jahr­buchs des Simon-Dubnow-Instituts. Auf rund zweihundert Seiten (S. 113-306) sind neun Beiträge einer im Mai 2009 in Leipzig veranstalteten Konferenz versammelt, die den jüdi­schen Anteil an der Lokalpolitik in Ostmitteleuropa zum Thema hatte. Für alle Forsche­rinnen und Forscher, die sich mit Stadtgeschichte beschäftigen, sind diese Beiträge wert­voll, da sie die Rolle von Juden im politischen Diskurs des östlichen Europas beleuchten. Im Gegensatz zu Westeuropa, wo der Schwerpunkt der öffentlichen Diskussion auf der bürgerrechtlichen Integration aller Stadtbürger lag, zirkulierte man in Osteuropa viel stär­ker um die ethno-konfessionelle Dimension der Einbindung von Juden.
Well-being in isolation: Exploring artistic immersive virtual environments in a simulated lunar habitat to alleviate asthenia symptoms
Creators: name: Pochwatko, Grzegorz
name: Kopec, Wieslaw
name: Swidrak, Justyna
name: Jaskulska, Anna
name: Skorupska, Kinga H.
name: Karpowicz, Barbara
name: Masłyk, Rafał
name: Grzeszczuk, Maciej
name: Barnes, Steven
name: Borkiewicz, Paulina
name: Kobyliński, Paweł
name: Pabiś-Orzeszyna, Michał
name: Balas, Robert
name: Lazarek, Jagoda
name: Dufresne, Florian
name: Bensch, Leonie
name: Nilsson, Tommy
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: H.1.2; I.3.8; J.4; J.m; K.8.2; J.6
subject: 93B51, 97M50

description: Revived interest in lunar and planetary exploration is heralding a new era for human spaceflight, characterized by frequent strain on astronaut's mental well-being, which stems from increased exposure to isolated, confined, and extreme (ICE) conditions. Whilst Immersive Virtual Reality (IVR) has been employed to facilitate self-help interventions to mitigate challenges caused by isolated environments in several domains, its applicability in support of future space expeditions remains largely unexplored. To address this limitation, we administered the use of distinct IVR environments to crew members (n=5) partaking in a simulated lunar habitat study. Utilizing a Bayesian approach to scrutinize small group data, we discovered a significant relationship between IVR usage and a reduction in perceived stress-related symptoms, particularly those associated with asthenia (syndrome often linked to chronic fatigue and weakness; a condition characterized by feelings of energy depletion or exhaustion that can be amplified in ICE conditions). The reductions were most prominent with the use of interactive virtual environments. The 'Aesthetic Realities' - virtual environments conceived as art exhibits - received exceptional praise from our participants. These environments mark a fascinating convergence of art and science, holding promise to mitigate effects related to isolation in spaceflight training and beyond.
title: Design and implementation of an automated bridge playing agent
title: Σχεδίαση και υλοποίηση ενός αυτοματοποιημένου παίκτη bridge
Creators: name: Ασημινακης Μαριος
Publisher: name: Technical University of Crete
Year: 2017

description: Το bridge είναι ένα από τα πιο δύσκολα παίγνια με τράπουλα και θεωρείται πνευματικό άθλημα όπως το σκάκι. Η υλοποίηση ενός αυτοματοποιημένου παίκτη bridge είναι μια μεγάλη πρόκληση για τον τομέα της τεχνητής νοημοσύνης, λόγω της έλλειψης πλήρους πληροφορίας για τους παίκτες. Ένα παιχνίδι bridge αποτελείται από τη φάση της αγοράς και τη φάση της εκτέλεσης. Σε αυτή την εργασία ασχοληθήκαμε κυρίως με την φάση της εκτέλεσης. Υλοποιήσαμε έναν πράκτορα που λύνει μια παραλλαγή του bridge που έχει τέλεια πληροφορία, που ονομάζεται double-dummy bridge. Για να το επιτύχουμε αυτό, χρειάστηκε να αποδείξουμε θεωρητικά την ορθότητα των μεθόδων μας. Στη συνέχεια, σχεδιάσαμε και υλοποιήσαμε μεθόδους αντιμετώπισης του προβλήματος της μη πλήρους πληροφόρησης από την πλευρά του εκτελεστή. Υλοποιήθηκαν τρεις διαφορετικοί πράκτορες, ο ένας από τους οποίου βασίζεται στην ευρέως διαδεδομένη μέθοδο Monte-Carlo, ενώ οι άλλοι δυο σε μια πρωτότυπη μέθοδο που συλλέγει πληροφορία πιο αποτελεσματικά. Επίσης υλοποιήσαμε δύο πράκτορες που παίζουν ως αμυνόμενοι. Ενώ και οι δύο χρησιμοποιούν πλήρη πληροφόρηση, ο ένας εξ αυτών προσπαθεί να εκμεταλλευτεί την έλλειψη πληροφορίας του εκτελεστή. Μελετήσαμε την αποτελεσματικότητα των πρακτόρων μας δοκιμάζοντάς τους πειραματικά σε μια πληθώρα από σετ δοκιμής, με άκρως ενθαρρυντικά αποτελέσματα.
description: The game of bridge is one of the most challenging card games, making it a mental sport like chess. Building an automated bridge player is a great challenge in the field of artificial intelligence because the players lack perfect information. A game of bridge consists of the bidding phase and the playing phase. In this thesis we mainly addressed the playing phase. We implemented an agent that solves the perfect information variant of bridge, called double-dummy bridge. In order to achieve that, we had to theoretically prove the correctness of our methods. Afterwards, we designed and implemented methods for overcoming the problem of imperfect information from the declarer's point of view. Three different agents were implemented, one based on the widely used Monte-Carlo approach, while the other two are based on a novel method which gathers information more effectively. We also implemented two agents that played as defenders. While they both play with perfect information, one of those tries to exploit the lack of information for the declarer. We studied the effectiveness of our agents by testing them in a wide range of game scenarios, with very encouraging results.
title: Recenzja: "Residential change and demographic challenge. The inner city of East Central Europe in the 21st century"/ Annegret Haase, Annett Steinfuhrer, Sigrun Kabisch, Katrin Grossmann, Ray Hall. Farnham: Ashgate, 2011. ISBN 978-0-7546-9850-0
Creators: name: Ogórek, Bartosz
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Książka „Residential Change and Demographic Challenge" jest owocem trzyletniej współpracy osiemnaściorga badaczy z niemieckich, polskich, czeskich i brytyjskich ośrodków naukowych. W skład zespołu weszli socjologowie, geografowie i antropologowie kultury. Praca składa się z trzynastu rozdziałów zgrupowanych w trzy części. Pierwsza z nich zawiera rozważania teoretyczne i metodologiczne, druga wyniki badań empirycznych i dyskusję nad nimi, w trzeciej zaś czytelnik znajdzie zwięzłe przedstawienie najistotniejszych ustaleń oraz postulaty badawcze na przyszłość. Pomimo dużej liczby autorów oraz rozbudowanej struktury narracja pozostaje bardzo spójna i jednolita.
The adverse impact of corporate ESG controversies on sustainable investment
Creators: name: Xue, Rui
name: Wang, Hongqi
name: Yang, Yuhao
name: Linnenluecke, Martina K
name: Jin, Kaifang
name: Cai, Cynthia Weiyi
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 350208
subject: Investment and risk management
classificationCode: 40
subject: Engineering
classificationCode: 350702
subject: Corporate social responsibility
classificationCode: 33
subject: Built environment and design

description: Global businesses are facing increasingly significant climate risks. Firms with ESG controversies will likely suffer from higher financing costs and inadequate investment capability, leading to investment inefficiency. We use a newly introduced ESG Controversy Score database to investigate the relationship between ESG controversies and corporate investment efficiency. The results show that ESG controversies significantly reduces firms’ overall investment efficiency, and such adverse impact is manifest in underinvestment inefficiency. Further analysis indicates that such a negative effect is more pronounced in firms with larger size and higher analyst coverage. Our findings highlight the significant role of ESG misbehaviour in corporate sustainable development.
title: Virtual reality flight simulator with hand-tracking and haptic-feedback

title: Εξομοιωτής πτήσης σε εικονική πραγματικότητα με χρήση τεχνολογίας αναγνώρισης κίνησης χεριού για αλληλεπίδραση
Creators: name: Δρακοπουλος Παναγιωτης
Publisher: name: Technical University of Crete
Year: 2017

description: In this thesis, we implemented a fully functional Flight Simulator, utilizing the latest technology on the fields of Virtual Reality and Hand-tracking. Specifically, the user-pilot has the ability to simulate a real flight, inside of a replica cockpit of one of the world’s most famous passenger jets. The simulation takes place at Athens International Airport, and the airspace above it. Furthermore, the user can interact with the cockpit in real time with his own hands, dramatically increasing the level of immersion and realism. Finally, the user receives haptic-feedback upon touching buttons and switches.
description: Στην παρούσα διπλωματική υλοποιήθηκε ένας πλήρης εξομοιωτής πτήσης, αξιοποιώντας την τελευταία λέξη της τεχνολογίας πάνω στους τομείς της εικονικής πραγματικότητας και της τεχνολογίας αναγνώρισης κίνησης χεριού. Συγκεκριμένα, ο χρήστης-πιλότος, έχει τη δυνατότητα προσομοίωσης μιας αληθινής πτήσης μέσα από το πιλοτήριο ενός εκ των πιο διάσημων επιβατικών αεροσκαφών, στον εναέριο χώρο του Ελ. Βενιζέλος και γενικότερα των Αθηνών. Επιπλέον, ο χρήστης μπορεί να αλληλεπιδράσει σε πραγματικό χρόνο με το πιλοτήριο με τα ίδια του τα χέρια, αυξάνοντας έτσι το επίπεδο ρεαλισμού και την εμβύθιση του στο εικονικό περιβάλλον. Τέλος ο χρήστης λαμβάνει ανάδραση αφής στο χέρι του κατόπιν αγγίγματος κουμπιών, διακοπτών του πιλοτηρίου.
Direct Measurement of the Bubble Nucleation Energy Threshold in a CF3I Bubble Chamber
Creators: name: COUPP Collaboration
name: Behnke, E.
name: Benjamin, T.
name: Brice, S. J.
name: Broemmelsiek, D.
name: Collar, J. I.
name: Cooper, P. S.
name: Crisler, M.
name: Dahl, C. E.
name: Fustin, D.
name: Hall, J.
name: Harnish, C.
name: Levine, I.
name: Lippincott, W. H.
name: Moan, T.
name: Nania, T.
name: Neilson, R.
name: Ramberg, E.
name: Robinson, A. E.
name: Sonnenschein, A.
name: Vázquez-Jáuregui, E.
name: Rivera, R. A.
name: Uplegger, L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have directly measured the energy threshold and efficiency for bubble nucleation from iodine recoils in a CF3I bubble chamber in the energy range of interest for a dark matter search. These interactions cannot be probed by standard neutron calibration methods, so we develop a new technique by observing the elastic scattering of 12 GeV/c negative pions. The pions are tracked with a silicon pixel telescope and the reconstructed scattering angle provides a measure of the nuclear recoil kinetic energy. The bubble chamber was operated with a nominal threshold of (13.6+-0.6) keV. Interpretation of the results depends on the response to fluorine and carbon recoils, but in general we find agreement with the predictions of the classical bubble nucleation theory. This measurement confirms the applicability of CF3I as a target for spin-independent dark matter interactions and represents a novel technique for calibration of superheated fluid detectors.
description: 5 pages, 3 figures
title: Rezension: "Opposition als Lebensform. Dissidenz in der DDR, der CSSR und in Polen"/ Alexander von Plato, Tomáš Vilímek, Piotr Filipkowski, Joanna Wawrzyniak. Berlin, Münster, Wien, Zürich, London Ort: LIT Verlag, 2013. ISBN 978-3-643-11183-8
Creators: name: Söhner, Felicitas
name: Digitale Wissenschaftsplattform Pol-Int (Www.Pol-Int.Org)
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2021

description: Ein Vierteljahrhundert nach Öffnung des Eisernen Vorhangs sind die osteuropäischen Länder dem Westen immer noch fremd. Dies gilt sowohl für die gegenwärtige gesellschaftliche Situation wie auch deren geschichtliche. Die vorliegende Arbeit zeichnet Lebenswege aus Polen, der ČSSR und der DDR nach und zeigt unterschiedliche Ausprägungen der Opposition in den beiden Jahrzehnten vor der politischen Wende. Die dem komparatistischen Forschungsansatz des Bandes zugrundeliegenden Fragestellungen ermöglichen einerseits eine länderübergreifende vergleichende Betrachtungsweise und arbeiten andererseits länderspezifische Profile heraus. Dabei beschäftigten sich die Autoren weniger mit Einzelschicksalen oder der Alltagspraxis, sondern vielmehr mit den Diskursen, die jene oppositionellen Kreise bestimmten. Die Verfasser schließen damit eine Wissenslücke der komparatistischen europäischen Zeit- und Kulturgeschichte der Dissidenz im Europa jenseits des Eisernen Vorhangs.
title: Ανάπλαση παραλιακού μετώπου λουτρόπολης Μεθάνων
Creators: name: Παυλη Χριστινα
Publisher: name: Technical University of Crete
Year: 2018

description: Η παρούσα διπλωματική εργασία πραγματεύεται την ανάπλαση του παραλιακού μετώπου της Λουτρόπολης των Μεθάνων. Στόχος αποτελεί η δημιουργία μιας ενιαίας γραφής ανάγνωσης του τοπίου. Κύριες προθέσεις της προτεινόμενης σχεδιαστικής πρότασης είναι: η αναβάθμιση της εγκαταλελειμμένης φυσιογνωμίας του τοπίου, η αποκατάσταση σχέσης πόλης-θάλασσας, ο επαναπροσδιορισμός των υφιστάμενων χαράξεων, ο επανασχεδιασμός και η ενίσχυση υφιστάμενων υποδομών, η δημιουργία ομοιόμορφης εικόνας της πόλης μέσω του επανασχεδιασμού του αστικού εξοπλισμού, η δημιουργία θεματικών ενοτήτων - ελκυστών κατάλληλων για φιλοξενία δραστηριοτήτων. Κεντρική συνθετική ιδέα αποτελεί η δημιουργία τριών ζωνών και εγκάρσιων χαράξεων που οδηγούν προς το μέτωπο καθώς και η δημιουργία έξι θεματικών ενοτήτων που λειτουργούν ως πόλοι έλξης για τους επισκέπτες του μετώπου.
Magnetoelastic effects in doped Fe2P
Creators: name: Gercsi, Z.
name: Delczeg-Czirjak, E. K.
name: Vitos, L.
name: Wills, A. S.
name: Daoud-Aladine, A.
name: Sandeman, K. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use combine high resolution neutron diffraction (HRPD) with density functional theory (DFT) to investigate the exchange striction at the Curie temperature (TC) of Fe2P and to examine the effect of boron and carbon doping on the P site. We find a significant contraction of the basal plane on heating through TC with a simultaneous increase of the c-axis that results in a small overall volume change of ~0.01%. At the magnetic transition the FeI-FeI distance drops significantly and becomes shorter than FeI-FeII . The shortest metal-metalloid (FeI-PI) distance also decreases sharply. Our DFT model reveals the importance of the latter as this structural change causes a redistribution of the FeI moment along the c-axis (Fe-P chain). We are able to understand the site preference of the dopants, the effect of which can be linked to the increased moment on the FeI-site, brought about by strong magneto-elasticity and changes in the electronic band structure.
Applications of data science for responsible gambling: A systematic search and review.
Creators: name: Ghaharian, Kasra
name: Abarbanel, Brett
name: Kraus, Shane
name: Phung, Dylan
name: Feldman, Alan
name: Bernhard, Bo
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Business
subject: Gaming and Casino Operations Management
subject: Hospitality Administration and Management
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: data science
subject: gambling
subject: gambling research
subject: gambling studies
subject: literature review
subject: machine learning
subject: systematic review

description: Applications of data science in the gambling industry are broad. Data science applications pertaining to responsible gambling have been of particular interest to researchers since the advent of technological innovations such as online gambling and behavioral tracking. More recently, payments modernization in the gambling sector has the potential to provide an additional layer of rich data that could be leveraged to help inform responsible gambling policy and practices. Accordingly, this study aims to produce a best-evidence synthesis of data science applications in responsible gambling contexts.
Instability of colliding metastable strings
Creators: name: Hiramatsu, Takashi
name: Eto, Minoru
name: Kamada, Kohei
name: Kobayashi, Tatsuo
name: Ookouchi, Yutaka
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The breaking of $U(1)_R$ symmetry plays a crucial role in modeling the breaking of supersymmetry (SUSY). In the models that possess both SUSY preserving and SUSY breaking vacua, tube-like cosmic strings called R-tubes, whose surfaces are constituted by domain walls interpolating a false and a true vacuum with some winding numbers, can exist. Their (in)stability can strongly constrain SUSY breaking models theirselves. In the present study, we investigate the dynamical (in)stability of two colliding metastable tube-like strings by field-theoretic simulations. From them, we find that the strings become unstable, depending on the relative collision angle and speed of two strings, and the false vacuum is eventually filled out by the true vacuum owing to rapid expansion of the strings or unstable bubbles created as remnants of the collision.
description: 14 pages, 15 figures, accepted for publication in JHEP; for 3D animations, see http://www2.yukawa.kyoto-u.ac.jp/~hiramatz/research/open/metastable-strings/