cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nanoscale trapping of interlayer excitons in a 2D semiconductor heterostructure
Creators: name: Shanks, Daniel N.
name: Mahdikhanysarvejahany, Fateme
name: Muccianti, Christine
name: Alfrey, Adam
name: Koehler, Michael R.
name: Mandrus, David G.
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Yu, Hongyi
name: LeRoy, Brian J.
name: Schaibley, John R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: For quantum technologies based on single excitons and spins, the deterministic placement and control of a single exciton is a long-standing goal. MoSe2-WSe2 heterostructures host spatially indirect interlayer excitons (IXs) which exhibit highly tunable energies and unique spin-valley physics, making them promising candidates for quantum information processing. Previous IX trapping approaches involving moiré superlattices and nanopillars do not meet the quantum technology requirements of deterministic placement and energy tunability. Here, we use a nanopatterned graphene gate to create a sharply varying electric field in close proximity to a MoSe2-WSe2 heterostructure. The dipole interaction between the IX and the electric field creates an ~20 nm trap. The trapped IXs show the predicted electric field dependent energy, saturation at low excitation power, and increased lifetime, all signatures of strong spatial confinement. The demonstrated architecture is a crucial step towards deterministic trapping of single IXs, which has broad applications to scalable quantum technologies.
Quantum computation with Kerr-nonlinear photonic crystals
Creators: name: Azuma, Hiroo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we consider a method for implementing a quantum logic gate with photons whose wave function propagates in a one-dimensional Kerr-nonlinear photonic crystal. The photonic crystal causes the incident photons to undergo Bragg reflection by its periodic structure of dielectric materials and forms the photonic band structure, namely, the light dispersion relation. This dispersion relation reduces the group velocity of the wave function of the photons, so that it enhances nonlinear interaction of the photons. (Because variation of the group velocity against the wave vector is very steep, we have to tune up the wavelength of injected photons precisely, however.) If the photonic crystal includes layers of a Kerr medium, we can rotate the phase of the wave function of the incident photons by a large angle efficiently. We show that we can construct the nonlinear sign-shift (NS) gate proposed by Knill, Laflamme, and Milburn (KLM) by this method. Thus, we can construct the conditional sign-flip gate for two qubits, which is crucial for quantum computation. Our NS gate works with probability unity in principle while KLM's original one is a nondeterministic gate conditioned on the detection of an auxiliary photon.
description: 20 pages, Latex2e, 4 eps figures; v2: minor corrections; v3: a new section added; v4: Sec. 4 is totally rewritten; v5: one section is removed; v6: minor corrections
Investigating a Hybrid Metaheuristic For Job Shop Rescheduling
Creators: name: Abdullah, Salwani
name: Aickelin, Uwe
name: Burke, Edmund
name: Din, Aniza
name: Qu, Rong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Previous research has shown that artificial immune systems can be used to produce robust schedules in a manufacturing environment. The main goal is to develop building blocks (antibodies) of partial schedules that can be used to construct backup solutions (antigens) when disturbances occur during production. The building blocks are created based upon underpinning ideas from artificial immune systems and evolved using a genetic algorithm (Phase I). Each partial schedule (antibody) is assigned a fitness value and the best partial schedules are selected to be converted into complete schedules (antigens). We further investigate whether simulated annealing and the great deluge algorithm can improve the results when hybridised with our artificial immune system (Phase II). We use ten fixed solutions as our target and measure how well we cover these specific scenarios.
Influence of Charge and Energy Imbalances on the Tunneling Current through a Superconductor-Normal Metal Junction
Creators: name: Takane, Yositake
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider quasiparticle charge and energy imbalances in a thin superconductor weakly coupled with two normal-metal electrodes via tunnel junctions at low temperatures. Charge and energy imbalances, which can be created by injecting quasiparticles at one junction, induce excess tunneling current $I_{\rm ex}$ at the other junction. We numerically obtain $I_{\rm ex}$ as a function of the bias voltage $V_{\rm det}$ across the detection junction. We show that $I_{\rm ex}$ at the zero bias voltage is purely determined by the charge imbalance, while the energy imbalance causes a nontrivial $V_{\rm det}$-dependence of $I_{\rm ex}$. The obtained voltage-current characteristics qualitatively agree with the experimental result by R. Yagi [Phys. Rev. B {\bf 73} (2006) 134507].
description: 10 pages, 5 figures
Cosmology in the dark: On the importance of source population models for gravitational-wave cosmology
Creators: name: Mastrogiovanni, S.
name: Leyde, K.
name: Karathanasis, C.
name: Chassande-Mottin, E.
name: Steer, D. A.
name: Gair, J.
name: Ghosh, A.
name: Gray, R.
name: Mukherjee, S.
name: Rinaldi, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Knowledge of the shape of the mass spectrum of compact objects can be used to help break the degeneracy between the mass and redshift of the gravitational wave (GW) sources, and thus can be used to infer cosmological parameters in the absence of redshift measurements obtained from electromagnetic observations. In this paper, we study extensively different aspects of this approach, including its computational limits and achievable accuracy. We focus on ground-based detectors with current and future sensitivities, we first perform the analysis of an extensive set of simulated data with a hierarchical Bayesian scheme inferring population and cosmological parameters. We consider a population model (power-law plus Gaussian) which exhibits characteristic scales (extremes of the mass spectrum, presence of an accumulation point) that allows an indirect estimate of the source redshift. Our analysis of this catalog highlights and quantifies the tight interplay between source population and cosmological parameters, as well as the influence of initial assumptions (whether formulated on the source or cosmological parameters). We then validate our results by an "end-to-end" analysis using simulated GW data and posterior samples generated from Bayesian samplers used for GW parameter estimation, thus mirroring the analysis chain used for observational data for the first time in literature. Our results then lead us to re-examine the estimation of $H_0$ obtained with GWTC-1, and we show explicitly how population assumptions impact the final $H_0$ result. Our results underline the importance of inferring population and cosmological parameters jointly (and not separately as is often assumed). The only exception, as we discuss, is if an electromagnetic counterpart was to be observed for all the BBH events: then the population assumptions have less impact on the estimation of cosmological parameters.
description: 20 pages, 12 figures
Μαθηματική Λογοτεχνία: Μια διαθεματική προσέγγιση του έργου του Α. Δοξιάδη Ο Θείος Πέτρος και η Εικασία του Γκόλντμπαχ
Creators: name: Κόκκινος, Ανδρέας Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μαθηματική Λογοτεχνία
Α. Δοξιάδης
Εικασία του Γκόλντμπαχ
Mathematical Literature
A. Doxiadis
Goldbach’s Conjencture

description: Στην παρούσα εργασία μελετάται το έργο του Α. Δοξιάδη, Ο θείος Πέτρος και η Εικασία του Γκόλντμπαχ, το οποίο εντάσσεται στο είδος της μαθηματικής λογοτεχνίας. Η μελέτη αποτελείται από μια εισαγωγή, όπου γίνονται κάποιες αναφορές στη φιλοσοφία των μαθηματικών, και από τρία κύρια μέρη. Στο πρώτο κεφάλαιο γίνεται μια συζήτηση για το θεωρητικό πλαίσιο της σύνδεσης μαθηματικών και λογοτεχνίας. Στο δεύτερο, παρουσιάζονται οι αφηγηματικές τεχνικές της μαθηματικής λογοτεχνίας και στο τρίτο γίνεται λόγος για τα χαρακτηριστικά του ήρωα του έργου που μελετάται. Η μελέτη του έργου αναδεικνύει νέους τρόπους προσέγγισης ανάλογων λογοτεχνικών κειμένων, τα οποία παρέχουν ένα πλαίσιο σύνδεσης της λογοτεχνίας με άλλες επιστήμες, και παράλληλα παρουσιάζει νέα κριτήρια για την ένταξή τους στον λογοτεχνικό κανόνα
description: The dissertation studies the work of A. Doxiadis, entitled Uncle Petros and Goldbach’s Conjecture, which forms part of the genre of mathematical literature. The study consists of an introduction and three main parts. The introduction presents us with elements of the philosophy of mathematics. The first chapter discusses the theoretical frame of the mathematics – literature relation. The second presents the narrative techniques that this genre employs and the third presents the characteristics of the hero of this particular work. The study suggests new methods of approaching this type of literary works, which construct a network of connections among literature and other disciplines of study, while also introducing new standards that will guide the classification of such texts in the literary canon
description: Σε συνεργασία με το τμήμα Φιλολογίας Πανεπιστημίου Κρήτης
Optical state engineering, quantum communication, and robustness of entanglement promiscuity in three-mode Gaussian states
Creators: name: Adesso, Gerardo
name: Serafini, Alessio
name: Illuminati, Fabrizio
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a novel, detailed study on the usefulness of three-mode Gaussian states states for realistic processing of continuous-variable quantum information, with a particular emphasis on the possibilities opened up by their genuine tripartite entanglement. We describe practical schemes to engineer several classes of pure and mixed three-mode states that stand out for their informational and/or entanglement properties. In particular, we introduce a simple procedure -- based on passive optical elements -- to produce pure three-mode Gaussian states with {\em arbitrary} entanglement structure (upon availability of an initial two-mode squeezed state). We analyze in depth the properties of distributed entanglement and the origin of its sharing structure, showing that the promiscuity of entanglement sharing is a feature peculiar to symmetric Gaussian states that survives even in the presence of significant degrees of mixedness and decoherence. Next, we discuss the suitability of the considered tripartite entangled states to the implementation of quantum information and communication protocols with continuous variables. This will lead to a feasible experimental proposal to test the promiscuous sharing of continuous-variable tripartite entanglement, in terms of the optimal fidelity of teleportation networks with Gaussian resources. We finally focus on the application of three-mode states to symmetric and asymmetric telecloning, and single out the structural properties of the optimal Gaussian resources for the latter protocol in different settings. Our analysis aims to lay the basis for a practical quantum communication with continuous variables beyond the bipartite scenario.
description: 33 pages, 10 figures (some low-res due to size constraints), IOP style; (v2) improved and reorganized, accepted for publication in New Journal of Physics
Higher order harmonic generation and strong field ionization with Bessel-Gauss beams in a thin jet geometry
Creators: name: Davino, Michael
name: Summers, Adam
name: Saule, Tobias
name: Tross, Jan
name: McManus, Edward
name: Davis, Brandin
name: Trallero-Herrero, Carlos A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A promising alternative to Gaussian beams for use in strong field science is Bessel-Gauss (BG or Bessel-like) laser beams as they are easily produced with readily available optics and provide more flexibility of the spot size and working distances. Here we use BG beams produced with a lens-axicon optical system for higher order harmonic generation (HHG) in a thin gas jet. The finite size of the interaction region allows for scans of the HHG yield along the propagation axis. Further, by measuring the ionization yield in unison with the extreme ultraviolet (XUV) we are able to distinguish regions of maximum ionization from regions of optimum XUV generation. This distinction is of great importance for BG fields as the generation of BG beams with axicons often leads to oscillations of the on-axis intensity, which can be exploited for extended phase matching conditions. We observed such oscillations in the ionization and XUV flux along the propagation axis for the first time. As it is the case for Gaussian modes, the harmonic yield is not maximum at the point of highest ionization. Finally, despite Bessel beams having a hole in the center in the far field, the XUV beam is well collimated making BG modes a great alternative when spatial filtering of the fundamental is desired.
description: Submitted to JOSA B, 8 pages, 4 figures
ДИНАМИЧЕСКИЕ ИЗМЕНЕНИЯ В ТКАНИ ЩИТОВИДНОЙ ЖЕЛЕЗЫ И АГРЕГАЦИИ ТРОМБОЦИТОВ ПРИ ЭКСПЕРИМЕНТАЛЬНОМ ГИПЕРТИРЕОЗЕ
Creators: name: Хонов, Алавиддин
name: Ахмедов, Камолиддин
Publisher: name: Zenodo
Year: 2024

description: Заболевание тиреотоксикоз очень распространено в популяции по данным многочисленных эпидемиологических исследований (Framingham Heart Study, Wickham Survey, NHANES III) [4].
Extreme quiescent variability of the transient neutron star low-mass X-ray binary EXO 1745-248 in Terzan 5
Creators: name: Rivera Sandoval, L. E.; Wijnands, Rudy.; Degenaar, Nathalie.; Cavecchi, Y.; Heinke, Craig O.; Cackett, Edward M.; Homan, Jeroen.; Altamirano, Diego.; Bahramian, Arash.; Sivakoff, Gregory Robert.; Miller, Jon M.; Parikh, Aastha S.
Publisher: name: University of Alberta Libraries
Year: 2018

Abstract
Origin of the large phonon band-gap in SrTiO3 and the vibrational signatures of ferroelectricity in ATiO3 perovskite: First principles lattice dynamics and inelastic neutron scattering of PbTiO3, BaTiO3 and SrTiO3
Creators: name: Choudhury, Narayani
name: Walter, E. J.
name: Kolesnikov, A. I.
name: Loong, C. -K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report first principles density functional perturbation theory calculations and inelastic neutron scattering measurements of the phonon density of states, dispersion relations and electromechanical response of PbTiO3, BaTiO3 and SrTiO3. The phonon density-of-states of the quantum paraelectric SrTiO3 is found to be fundamentally distinct from that of ferroelectric PbTiO3 and BaTiO3 with a large 70-90 meV phonon band-gap. The phonon dispersion and electromechanical response of PbTiO3 reveal giant anisotropies. The interplay of covalent bonding and ferroelectricity, strongly modulates the electromechanical response and give rise to spectacular signatures in the phonon spectra. The computed charge densities have been used to study the bonding in these perovskites. Distinct bonding characteristics in the ferroelectric and paraelectric phases give rise to spectacular vibrational signatures. While a large phonon band-gap in ATiO3 perovskites seems a characteristic of quantum paraelectrics, anisotropy of the phonon spectra correlates well with ferroelectric strength. These correlations between the phonon spectra and ferroelectricity, can guide future efforts at custom designing still more effective piezoelectrics for applications. These results suggest that vibrational spectroscopy can help design novel materials.
description: 11 pages, 4 color figures and 2 Tables
Bosonization study of a generalized statistics model with four Fermi points
Creators: name: Aditya, Sreemayee
name: Sen, Diptiman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study a one-dimensional lattice model of fractional statistics in which particles have next-nearest-neighbor hopping between sites which depends on the occupation number at the intermediate site and a statistical parameter $ϕ$. The model breaks parity and time-reversal symmetries and has four-fermion interactions if $ϕ\ne 0$. We first analyze the model using mean field theory and find that there are four Fermi points whose locations depend on $ϕ$ and the filling $η$. We then study the modes near the Fermi points using the technique of bosonization. Based on the quadratic terms in the bosonized Hamiltonian, we find that the low-energy modes form two decoupled Tomonaga-Luttinger liquids with different values of the Luttinger parameters which depend on $ϕ$ and $η$; further, the right and left moving modes of each system have different velocities. A study of the scaling dimensions of the cosine terms in the Hamiltonian indicates that the terms appearing in one of the Tomonaga-Luttinger liquids will flow under the renormalization group and the system may reach a non-trivial fixed point in the long distance limit. We examine the scaling dimensions of various charge density and superconducting order parameters to find which of them is the most relevant for different values of $ϕ$ and $η$. Finally we look at two-particle bound states that appear in this system and discuss their possible relevance to the properties of the system in the thermodynamic limit. Our work shows that the low-energy properties of this model of fractional statistics have a rich structure as a function of $ϕ$ and $η$.
description: 21 pages, 5 figures; corrected some typos
Great Britain and the Ruhr occupation
Creators: name: Arendt, Clayton Hondo
Publisher: name: University of British Columbia
Year: 2008

description: France and Belgium occupied the Ruhr Valley in Germany in January 1923. Germany responded with passive resistance. For the following nine months these three countries remained locked in a powerful struggle of wills. Britain was not directly involved in the conflict but she was certainly affected by it. Britain believed that the occupation would destroy Germany's ability to pay reparations. However, Britain decided to pursue a policy of neutrality; she did not oppose the occupation, nor did she support it. Historians have tried to determine why Britain chose the policy of neutrality. If Britain believed that the occupation was unwise, why didn't she try to end the Ruhr struggle? Most historians concluded that Britain did not actively oppose France for one of three reasons. Some believe Britain could not act because of the clear strategic advantages which France held. Others believe that Britain did try to oppose France but that her efforts ultimately failed. These first two groups of historians have accepted the central idea that Britain wanted to oppose France. However, a third group of historians rejects this thesis, claiming instead that Britain did not oppose France because she had no desire to do so. This paper attempts to discover general British attitudes toward the Ruhr occupation. It tries to determine whether the British wanted to oppose France in 1923. A variety of materials were used to try to discover what attitudes and beliefs determined British foreign policy during the Ruhr occupation. The main source used was the British press. This paper makes use of a number of British newspapers from that period. A variety of first hand accounts, general histories, and government documents were also used. Together these sources provided a clear picture of general British opinions of the occupation. This paper demonstrates that Britain could not contemplate opposing France in 1923. The popular attitudes and beliefs of the time precluded any such action. Britain remained neutral not only because France was in a better strategic position than she, but also because she did not want to oppose the occupation. The evidence which has previously been used by historians to demonstrate pro-German sympathies has been entirely misinterpreted. There is nothing in British statements, actions, or beliefs which would suggest that Britain had any desire to oppose France actively in 1923.
AD Mensae: a dwarf nova in the period gap
Creators: name: Schmidtobreick, L.
name: Tappert, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: AD Men was classified as a probable long-period dwarf nova based on its long-term variability. Recent spectroscopic data instead suggested a short-period system. With the here presented observations we aim at clarifying its nature. Time--resolved photometry and spectroscopy has been used to get information on the orbital period of this system. The light curve shows the typical flickering and a clear hump--like periodic modulation with an average amplitude of 0.3mag and a period of P=2.20(02)h. The radial velocity measurements of the Halpha emission line confirm this value as the orbital period. AD Men is thus located at the lower end of, but clearly inside, the gap of the period distribution of cataclysmic variables, making it one of only 11 dwarf novae in this important period range.
description: 5 pages, 6 figures, accepted by A&A
Complementation of a REM mutant in Ustilago maydis
Creators: name: Barrett, Katherine
Publisher: name: University of British Columbia
Year: 2008

description: Ustilago maydis is a fungal pathogen of corn (Zea mays). Its complex life cycle consists of three cell types: (1) non-pathogenic, yeast-like haploids, (2) mycelial, pathogenicdikaryons, and (3) diploid cells produced upon karyogamy within the plant. Mating and pathogenicity in U. maydis are under the control of two loci, a and b. Heterozygousity at both loci is required for fusion of cells, pathogenesis, and subsequent development of the fungus within the plant. The aim of this project was to identify genes, other than a and b, that are involved in the pathogenesis of U. maydis. To this end, mycelial haploid mutants were isolated by UV mutagenesis of a yeast-like strain. A single mutant (designated 87-18) was selected for further study due to the strength and stability of the mycelial phenotype. This mutation was named rem (repressor of mycelial phenotype). The phenotype of mutant 87-18 was remarkable because the strain grows with a filamentous morphology in both solid and liquid media. This phenotype is not demonstrated by any of the cell types of U. maydis, regardless of the condition of the a and b loci. Pathogenicity assays indicate that 87-18, which was derived from an auxotrophic strain, was not solopathogenic, but could cause disease when co-inoculated with a compatible wild-type strain. Prototrophic, mutantprogeny of this cross were not solopathogenic. To clone the gene(s) responsible for the rem phenotype,a wild-type genomic library was constructed in the cosmid vector, pJW42. Transformation of the mutant 87-18 with the cosmid library yielded six yeast-like colonies. Cosmid DNA was isolated from three of these transformants and restriction digest patterns indicated that the insert DNA in the three cosmids was highly similar. Cosmid DNA gave 100%yeast-like transformants when reintroduced into strain 87-18.Thus, these results indicate the isolation of a DNA sequence that complements the mutation of strain 87-18. This complementing DNA provides the starting material for a molecular analysis of the determination of cell morphology in U. maydis.
Grammatical elicitation: Embedded clauses and transitive relative clauses
Creators: name: Sales, Henry
name: Scott, Tessa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: mam

description: Matrix verb is 'see.' Word order, morphology, and information structure are varied. Relative clauses with ergative heads functioning as ergative arguments were elicited. For notes, see PDF pages 24-27 of related field notes.
Hawking radiation may violate the Penrose cosmic censorship conjecture
Creators: name: Hod, Shahar
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the Hawking evaporation process of Reissner-Nordström black holes. It is shown that the characteristic radiation quanta emitted by the charged black holes may turn near-extremal black-hole spacetimes into horizonless naked singularities. The present analysis therefore reveals the intriguing possibility that the semi-classical Hawking evaporation process of black holes may violate the fundamental Penrose cosmic censorship conjecture.
description: 5 pages. This essay received an Honorable Mention from the Gravity Research Foundation 2019
Οι ΗΠΑ και η Μεταπολεμική Ανάπλαση του Ελληνικού Πολιτικού Συστήματος (1944-1947)
Creators: name: Τσαρτσιανίδου, Μαρία Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ελληνοαμερικανικές σχέσεις
Μεταπολικά
Πολιτικό σύστημα
Greek – American Relations
Post-war
Political System

description: Η μελέτη αυτή έχει στόχο να διερευνήσει το ρόλο των Ηνωμένων Πολιτειών στην ανάπλαση του ελληνικού πολιτικού συστήματος μετά την απελευθέρωση της Ελλάδας από τη ναζιστική Κατοχή. Το χρονικό εύρος της έρευνας εκτείνεται από την επαύριο των Δεκεμβριανών του 1944 και την υπογραφή της Συμφωνίας της Βάρκιζας, στις 12 Φεβρουαρίου 1945 έως την συγκρότηση της κυβέρνησης συνασπισμού Λαϊκών και Φιλελευθέρων στις 7 Σεπτεμβρίου 1947. Εξετάζει την εμπλοκή των Αμερικανών στη διεξαγωγή των πρώτων ελληνικών μεταπολεμικών εκλογών, την αντιστροφή της σειράς μεταξύ του δημοψηφίσματος και των εκλογών, τον ορισμό της ημερομηνίας των εκλογών και του εκλογικού συστήματος. Παρουσιάζει την συζήτηση στο Συμβούλιο Ασφαλείας του ΟΗΕ σχετικά με την παραμονή των βρετανικών στρατευμάτων στην Ελλάδα, την αποχή της αριστεράς από τις εκλογές του Μαρτίου 1946 καθώς και τον ρόλο των ξένων παρατηρητών με την αποστολή της AMFOGE στη νομιμοποίηση του αποτελέσματος των εκλογών. Η έρευνα στηρίχθηκε κυρίως σε δημοσιευμένο αρχειακό υλικό: τα διπλωματικά έγγραφα που περιλαμβάνονται στους τόμους «Foreign Relations of the United States (FRUS)» που αφορούν την Ελλάδα για τα έτη 1945, 1946 και 1947, σε συνδυασμό με τη μελέτη δευτερογενούς βιβλιογραφίας.
description: This study aims to explore the role of the United States in the regeneration of the Greek political system after the liberation of Greece from the Nazi Occupation. The survey extends from December 1944 and the signing of the Varkiza Agreement on February 12, 1945, until the formation of the League of People and Liberals, on September 7, 1947. It examines the involvement of the Americans in the conduct of the first Greek postwar elections, the reversal of the series between the referendum and the elections, the election date and the electoral system. It presents the UN Security Council debate on the British troops' stay in Greece, the abstention of the left party from the March 1946 elections, and the role of foreign observers in AMFOGE's mandate to legitimize the outcome of the elections. The research was mainly based on published archival material: the diplomatic papers included in the volumes "Foreign Relations of the United States (FRUS)" concerning Greece for the years 1945, 1946 and 1947, in conjunction with the study of secondary bibliography.
Near-Ultraviolet Spectra of Flares on YZ CMi
Creators: name: Hawley, Suzanne L.
name: Walkowicz, Lucianne M.
name: Allred, Joel C.
name: Valenti, Jeff A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Near-ultraviolet spectroscopic data obtained with the HST STIS instrument on the dMe flare star YZ Canis Minoris (YZ CMi) were analyzed. Flare and quiet intervals were identified from the broadband near-UV light curve, and the spectrum of each flare was separately extracted. Mg II and Fe II line profiles show similar behavior during the flares. Two large flares allowed time-resolved spectra to be analyzed, revealing a very broad component to the Mg II k line profile in at least one flare spectrum (F9b). If interpreted as a velocity, this component requires chromospheric material to be moving with FWHM ~ 250 km/sec, implying kinetic energy far in excess of the radiative energy. The Mg II k flare line profiles were compared to recent radiative hydrodynamic models of flare atmospheres undergoing electron beam heating. The models successfully predict red enhancements in the line profile with typical velocity of a few km/sec, but do not reproduce the flares showing blue enhancements, or the strongly broadened line observed in flare F9b. A more complete calculation of redistribution into the line wings, including the effect of collisions with the electron beam, may resolve the origin of the excess line broadening.
description: 29 pages, 12 figures; accepted to PASP
MOESM13 of A lil3 chlp double mutant with exclusive accumulation of geranylgeranyl chlorophyll displays a lethal phenotype in rice
Creators: name: Li, Chunmei
name: Liu, Xin
name: Pan, Jihong
name: Guo, Jia
name: Wang, Qian
name: Chen, Congping
name: Li, Na
name: Zhang, Kuan
name: Yang, Bin
name: Sun, Changhui
name: Deng, Xiaojian
name: Wang, Pingrong
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology

description: Additional file 13: Figure S9 Analysis of vitamin E in leaves and grains of 502ys. Elution profiles of the tocopherol standards (a), tocopherols in leaves of wild-type Nipponbare (b) and 502ys (c), tocopherols and tocotrienols in grains of Nipponbare (d) and 502ys (e) were detected by fluorescence with excitation at 290 nm and emission at 330 nm. (f) Tocopherol contents in leaves and grains of Nipponbare and 502ys were quantified by using tocopherol standards. (g) The peak area of tocotrienols in grains of Nipponbare (WT) and 502ys. α-T, α-tocopherol; γ-T, γ-tocopherol. The tocopherol standards were prepared as described in Fig. 5. α-T3, γ-T3 and δ-T3 represent α-tocotrienol, γ-tocotrienol and δ-tocotrienol, respectively. Peaks 1 and 2 represent α-tocopherol and γ-tocopherol; Peak 3 is δ-tocopherol which does not exist in rice and was used as control. Peaks 4, 5 and 6 represent α-tocotrienol, γ-tocotrienol and δ-tocotrienol, respectively. Peak 7 might be the isomer of γ-tocopherol. Error bars represent standard errors of three independent biological replicates. Asterisks indicate statistically significant differences compared with the wild-type at P < 0.01. (PDF 758 kb)
Ανίχνευση Οχημάτων με τη Χρήση Ευφυών Συστημάτων Χαμηλού Κόστους σε Πραγματικές Περιβαλλοντικές Συνθήκες
Creators: name: Σκούφας, Κωνσταντίνος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ευφυή Συστήματα
Intelligent Systems

description: Με τη ραγδαία εξέλιξη τόσο της τεχνολογίας όσο και των μεθοδολογιών που τη διέπουν, είναι πλέον απόλυτα ρεαλιστική και συνεπώς εφικτή, η συστηματική παρακολούθηση της κυκλοφορίας, γεγονός που μπορεί να οδηγήσει σε πολύπλευρα αποτελέσματα, όπως, για παράδειγμα, σε καλύτερο έλεγχό της. Ένα σύστημα το οποίο υλοποιεί τα παραπάνω, μπορεί να έχει και πολλές επιπλέον δυνατότητες. Μία τέτοια δυνατότητα είναι για παράδειγμα η παρακολούθηση των περιβαλλοντικών στοιχείων σε συνάρτηση με τη κυκλοφορία. Στην παρούσα διπλωματική εργασία, στο πλαίσιο του χρηματοδοτούμενου έργου “ΕΣΠΑ ΕΔΚ Τ1ΕΔΚ-04012 2018-2020”, αναπτύσσεται ένα τέτοιο ευφυές σύστημα χαμηλού κόστους, το οποίο είναι σε θέση να ανιχνεύει τα οχήματα κάνοντας επεξεργασία εικόνας και συνεπώς και να παρακολουθεί την κυκλοφορία. Επιπλέον, το σύστημα έχει τη δυνατότητα να ανιχνεύει περιβαλλοντικούς παράγοντες, όπως είναι η περιεκτικότητα του αέρα σε διοξείδιο του άνθρακα. Η ιδέα αυτή υλοποιείται σε τρία στάδια. Αρχικά, ως μέθοδος ανίχνευσης οχημάτων προτείνεται η χρήση νευρωνικών δικτύων και εν συνεχεία, για την καταγραφή των περιβαλλοντικών συνθηκών που επικρατούν στο σημείο ανίχνευσης της κυκλοφορίας καθώς επίσης και για την ανίχνευση των οχημάτων, παρουσιάζεται το σύστημα το οποίο υλοποιεί την όλη διαδικασία. Περιγράφεται το υλικό (hardware) από το οποίο αποτελείται καθώς επίσης και ο τρόπος λειτουργίας του λογισμικού (software). Τέλος, όλα τα παραπάνω δεδομένα αποθηκεύονται σε έναν διακομιστή (server), οπτικοποιούνται και παρουσιάζεται η τελική κατασκευή του όλου συστήματος.
description: With the rapid development of both technology and the methodologies that govern it, it is now realistic and therefore possible to systematically monitor traffic, which can lead to multifaceted results, for example, to the better control of it. A system that implements the above can also have many extra features. Such a possibility is, for example, the monitoring of environmental data in relation to traffic. In this diploma thesis, within the framework of the funded project “ΕΣΠΑ ΕΔΚ Τ1ΕΔΚ-04012 2018-2020” a low-cost intelligent system is developed in order to detect vehicles using image processing and thus monitor traffic. In addition, the system has the ability to detect environmental factors, such as the air content of carbon dioxide. This idea is implemented in three stages. Initially, as a method of detecting vehicles, it is proposed to use neural networks and then to capture the environmental conditions at the traffic detection point as well as to detect the vehicles, the system which implements the whole process is presented. It describes the hardware it consists of, as well as how the software works. Finally, all of the above data is stored on a server and from there, they are visualized and the final device is presented.
description: Σε συνεργασία με: Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
DisenHAN: Disentangled Heterogeneous Graph Attention Network for Recommendation
Creators: name: Wang, Yifan
name: Tang, Suyao
name: Lei, Yuntong
name: Song, Weiping
name: Wang, Sheng
name: Zhang, Ming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Heterogeneous information network has been widely used to alleviate sparsity and cold start problems in recommender systems since it can model rich context information in user-item interactions. Graph neural network is able to encode this rich context information through propagation on the graph. However, existing heterogeneous graph neural networks neglect entanglement of the latent factors stemming from different aspects. Moreover, meta paths in existing approaches are simplified as connecting paths or side information between node pairs, overlooking the rich semantic information in the paths. In this paper, we propose a novel disentangled heterogeneous graph attention network DisenHAN for top-$N$ recommendation, which learns disentangled user/item representations from different aspects in a heterogeneous information network. In particular, we use meta relations to decompose high-order connectivity between node pairs and propose a disentangled embedding propagation layer which can iteratively identify the major aspect of meta relations. Our model aggregates corresponding aspect features from each meta relation for the target user/item. With different layers of embedding propagation, DisenHAN is able to explicitly capture the collaborative filtering effect semantically. Extensive experiments on three real-world datasets show that DisenHAN consistently outperforms state-of-the-art approaches. We further demonstrate the effectiveness and interpretability of the learned disentangled representations via insightful case studies and visualization.
description: Accepted at CIKM2020
Measurements of the Influence of Acceleration and Temperature of Bodies on their Weight
Creators: name: Dmitriev, A. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: A brief review of experimental research of the influence of acceleration and temperatures of test mass upon gravitation force, executed between the 1990s and the beginning of 2000 is provided.Results of weighing a rotor of a mechanical gyroscope with a horizontal axis, an anisotropic crystal with the big difference of the speed of longitudinal acoustic waves, measurements of temperature dependence of weight of metal bars of non-magnetic materials, and also measurement of restitution coefficients at quasi-elastic impact of a steel ball about a massive plate are given. A negative temperature dependence of the weight of a brass core was measured. All observably experimental effects, have probably a general physical reason connected with the weight change dependent upon acceleration of a body or at thermal movement of its microparticles.
description: 7 pages, 6 figures. Presented at the 5-th Symposium on New Frontiers and Future Concepts (STAIF-2008)
A self-supervised, physics-aware, Bayesian neural network architecture for modelling galaxy emission-line kinematics
Creators: name: Dawson, James M.
name: Davis, Timothy A.
name: Gomez, Edward L.
name: Schock, Justus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In the upcoming decades large facilities, such as the SKA, will provide resolved observations of the kinematics of millions of galaxies. In order to assist in the timely exploitation of these vast datasets we explore the use of a self-supervised, physics aware neural network capable of Bayesian kinematic modelling of galaxies. We demonstrate the network's ability to model the kinematics of cold gas in galaxies with an emphasis on recovering physical parameters and accompanying modelling errors. The model is able to recover rotation curves, inclinations and disc scale lengths for both CO and HI data which match well with those found in the literature. The model is also able to provide modelling errors over learned parameters thanks to the application of quasi-Bayesian Monte-Carlo dropout. This work shows the promising use of machine learning, and in particular self-supervised neural networks, in the context of kinematically modelling galaxies. This work represents the first steps in applying such models for kinematic fitting and we propose that variants of our model would seem especially suitable for enabling emission-line science from upcoming surveys with e.g. the SKA, allowing fast exploitation of these large datasets.
Unit Testing in GS2 with pFUnit
Creators: name: Hill, Peter
Publisher: name: Zenodo
Year: 2019

description: Testing software is an essential part of the development process, and quick, specific tests help to reduce time-to-solution. pFUnit is a testing framework for Fortran to help write those tests. Here we discuss strategies for unit testing in general, and how to use pFUnit to write unit tests for GS2 specifically.
description: Funded by Turbulent Dynamics of Tokamak Plasmas (EP/R034737/1)
Αξιοποίηση σεναρίων εκπαίδευσης στην νευρο-ανατομία με χρήση συστημάτων μεικτής πραγματικότητας διαμέσου του αισθητήρα Microsoft HoloLens
Creators: name: Ντακάκης, Γεώργιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Νευροανατομία
Ιατρική εκπαίδευση
Μεικτή πραγματικότητα
Neuroanatomy
Medical education
Mixed Reality

description: Η μελέτη της ανατομίας καθώς και του υπό-πεδίου της νεύρο-ανατομίας αποτελεί ένα μάθημα βαρύνουσας σημασίας στα ωρολόγια προγράμματα των ιατρικών σχολών παγκοσμίως. Αποτελεί ένα μάθημα που πέρα από τη θεωρητική γνώση απαιτεί και την πρακτική εξάσκηση των φοιτητών. Οι σύγχρονες τεχνολογικές εξελίξεις στον τομέα της πληροφορικής και της μηχανικής, έχουν μεταβάλλει ριζικά τον τρόπο που αυτή διδάσκεται. Σύγχρονα εργαλεία προερχόμενα από τα παραπάνω τεχνικά πεδία, προσφέρουν πλέον εφαρμογές μεικτής πραγματικότητας που αυξάνουν την αλληλεπίδραση του φοιτητή με το ανθρώπινο σώμα. Πιο συγκεκριμένα, παρέχουν στον εκπαιδευόμενο φοιτητή ιατρικής όλα τα δεδομένα που απαιτούνται ώστε να αποκτήσει μία πολύ-αισθητηριακή προσέγγιση της ανατομίας του ανθρώπινου σώματος. Η παρούσα διπλωματική εργασία στοχεύει στο να διερευνήσει κατά πόσο η δημιουργία σεναρίων χρήσης γραφικών αναπαραστάσεων του εγκεφάλου και του νευρικού συστήματος μέσα από ένα σύστημα μεικτής πραγματικότητας τελευταίας γενιάς με τη χρήση του αισθητήρα Microsoft HoloLens είναι τεχνικά εφικτή αλλά και εκπαιδευτικά και μαθησιακά αποτελεσματική. Ο συγκεκριμένος στόχος διερευνάται μέσα από την αναπαράσταση των 3Δ-μοντέλων σε περιβάλλον μεικτής πραγματικότητας. Ως μετρήσιμο κριτήριο αξιολόγησης είναι η σύγκριση της προσέγγισης με παλαιότερα μοντέλα διδασκαλίας όπως η διάλεξη και τα οπτικό-ακουστικά μέσα.
description: The study of both general anatomy and neuroanatomy is a class of upmost importance for medical students around the globe. Except the theoretical component, the class also consists of a practical component which requires the involvement of the students. In the past few years, with the rapid evolution of technology, the teaching of these classes has been affected majorly. Modern tools, arising from the fields of informatics and mechanics, include mixed reality applications which can enhance the interaction between the user and the human body. More specifically, such tools provide to the trainee medical students with all the data needed for them to acquire a multi-sensory approach to the anatomy of the human body. The present masters’ thesis aims to investigate whether the creation of use-case scenarios with the use of graphic representations of the human brain and the central nervous system through a mixed reality system implemented via Microsoft HoloLens device is technically plausible and effective. This particular aim is explored through 3D models in mixed reality environments. In order to come to a safe conclusion, this novel approach is compared with traditional ways of teaching neuroanatomy, with the use of visual and auditory materials.
Optimising top-quark threshold scan at CLIC using genetic algorithm
Creators: name: Nowak, Kacper
name: Zarnecki, Aleksander Filip
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: One of the important goals at the future $e^+e^-$ colliders is to measure the top-quark mass and width in a scan of the pair production threshold. However, the shape of the pair-production cross section at the threshold depends also on other model parameters, as the top Yukawa coupling, and the measurement is a subject to many systematic uncertainties. Presented in this work is the study of the top-quark mass determination from the threshold scan at CLIC. The most general approach is used with all relevant model parameters and selected systematic uncertainties included in the fit procedure. Expected constraints from other measurements are also taken into account. It is demonstrated that the top-quark mass can be extracted with precision of the order of 30 to 40 MeV, including considered systematic uncertainties, already for 100 fb$^{-1}$ of data collected at the threshold. Additional improvement is possible, if the running scenario is optimised. With the optimisation procedure based on the genetic algorithm the statistical uncertainty of the mass measurement can be reduced by about 20%. Influence of the collider luminosity spectra on the expected precision of the measurement is also studied.
description: 27 pages, 18 figures
B(s)-B(s)bar Mixing in Supersymmetric Grand Unified Models
Creators: name: Dutta, Bhaskar
name: Mimura, Yukihiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study B_s-\bar{B}_s mixing in grand unified SO(10), SU(5) models where the mixings among the second and third generation squarks arise due to the existence of flavor violating sources in the Dirac and Majorana couplings which are responsible for neutrino mixings. We find that when the branching ratio of tau->mu gamma decay is enhanced to be around the current experimental bound, B_s-\bar{B}_s mixing may also contain large contribution from supersymmetry in the SO(10) boundary condition. Consequently, the phase of B_s-\bar{B}_s mixing is large (especially for small tan beta and large scalar mass m_0) and can be tested by measuring CP asymmetries of B_s decay modes.
description: 5 pages, 3 figures. Modifications in the text and the title, references added, results unchanged, to appear in PRL
Thailand and international law
Creators: name: Burns, Wayne Douglas
Publisher: name: University of British Columbia
Year: 2008

description: This thesis is an analytical study of Thailand's, culture, society, history and foreign relations, and the effect all these factors have had on its behaviour relative to International Law. It involves an analysis of its historical development as a sovereign state and its early treaties with the European powers. The role of certain institutions in its society such as the military and the bureaucracy are analyzed particularly regarding their influence on Thailand's stance on international politics and to a lesser extent, on international law. An analysis of the one case Thailand has dealt with in the International Court of Justice is presented in the context of Thailand's growing participation in international organisations and specifically, the United Nations. As for its record dealing with human rights issues, a chapter is devoted to the reasons for Thailand's response to international human rights covenants, as evidenced by the way it treats women, minority groups and refugees. Finally, a chapter is devoted to Thailand's involvement with the newly emerging international Law of the Sea and the problems which arose for its fisheries as a result of this new regime. Overall, Thailand is portrayed as becoming more aware of International Law as a means to effect its policies and the example of its behaviour regarding the Vietnamese invasion in Cambodia is given and the favourable response its stance has received, which has supported the style of diplomacy it has used relative to that conflict, over the 1980's.