cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
R Scuti: Close Alternating Pulsation Periods or Chaos in the RV Tau -- Type Star?
Creators: name: Kudashkina, L. S.
name: Andronov, I. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Results of analysis of 60010 data photometric observations from the AAVSO international database are presented, which span 120 years of monitoring. The periodogram analysis shows the best fit period of 70.74d, a half of typically published periods for smaller intervals. Contrary to expectation for deep/shallow minima, the changes between them are not so regular. There may be series of deep (or shallow) minima without alternations. There may be two acting periods of 138.5 days and 70.74, so the beat modulation may be expected. The dependence of the phases of deep minima argue for two alternating periods with a characteristic life-time of a mode of 30years. These phenomenological results better explain the variability than the model of chaos.
description: "Annales Astronomiae Novae", 2021, vol.2, http://astronomianova.org/publikacje.php (to appear)
Electronic statistics-on-demand: bunching, anti-bunching, positive and negative correlations in a molecular spin-valve
Creators: name: Davis, Nicholas S.
name: Rudge, Samuel L.
name: Kosov, Daniel S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: One of the long-standing goals of quantum transport is to use the noise, rather than the average current, for information processing. However, achieving this requires on-demand control of quantum fluctuations in the electric current. In this paper, we demonstrate theoretically that transport through a molecular spin-valve provides access to many different statistics of electron tunneling events. Simply by changing highly tunable parameters, such as electrode spin-polarization, magnetization angle, and voltage, one is able to switch between Poisson behavior, bunching and anti-bunching of electron tunnelings, and positive and negative temporal correlations. The molecular spin-valve is modeled by a single spin-degenerate molecular orbital with local electronic repulsion coupled to two ferromagnetic leads with magnetization orientations allowed to rotate relative to each other. The electron transport is described via Born-Markov master equation and fluctuations are studied with higher-order waiting time distributions. For highly magnetized parallel-aligned electrodes, we find that strong positive temporal correlations emerge in the voltage range where the second transport channel is partially open. These are caused by a spin-induced electron-bunching, which does not manifest in the stationary current alone.
Επίλυση του ευθέος και αντίστροφου προβλήματος για υπεδάφιες δομές στην ηλεκτρομαγνητική διασκόπηση υψηλών συχνοτήτων
Creators: name: Μερτζανίδης, Ιωάννης Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2002
Subjects: Αντίστροφο μονοδιάστατο πρόβλημα ηλεκτρομαγνητικής σκέδασης
Αναλυτική μέθοδος επίλυσης
Συντελεστής ανάκλασης επίπεδου κύματος
Πολυστρωματικός ημιχώρος
Σύνθετη αντίσταση εισόδου
Προσομειώσεις Monte-Carlo
Inverse 1-D electromagnetic scattering problem
Analytical method
Plane wave reflection coefficient
Multi-layered half-space
Input impedance
Monte-Carlo simulation

description: Αντικείμενο της διδακτορικής διατριβής είναι η ανάπτυξη μίας νέας αναλυτικής μεθόδου για την επίλυση του αντίστροφου μονοδιάστατου προβλήματος ηλεκτρομαγνητικής σκέδασης. Η μέθοδος βασίζεται στη μέτρηση του μιγαδικού συντελεστή ανάκλασης ενός επίπεδου κύματος κατά την κάθετη πρόσπτωσή του σε διαστροματικό ημιχώρο. από την τυποποίηση του ευθέος προβλήματος προκύπτει η εμφάνιση ακρότατων τιμών της σύνθετης αντίστασης στην πάνω διαχωριστική επιφάνεια, η οποία επιτρέπει τον απευθείας υπολογισμό των χαρακτηριστικών της δομής από δύο μόνο μετρήσεις του μιγαδικού συντελεστή ανάκλασης. Η μέθοδος δοκιμάζεται ως προς την ευστάθειά της με την εισαγωγή ευθόρυβων συνθετικών δεδομένων. Παραθέτονται συγκριτικά αποτελέσματα από την εφαρμογή της προτεινόμενης μεθόδου και προηγούμενης σε προσομειωμένα μοντέλα. Γίνεται προσπάθεια επέκτασης της μεθόδου σε δομές τριών και Ν στρωμάτων και σχολιάζονται οι δυσκολίες που προκύπτουν. Κατασκευάζονται προσομειωμένα διαστρωματικά μοντέλα και η μέθοδος δοκιμάζεται στην επίλυση πρακτικών προβλημάτων υδρολογίας και περιβαλλοντικής Γεωλογίας. Γίνεται κριτική των δυνατοτήτων και των περιορισμών της και προτάσεις για μελλοντική συνέχιση της έρευνας.
description: The purpose of this doctoral thesis is the development of a new analytical method for the solution of the inverse 1-D electromagnetic scattering problem. The method is based on a study of frequency response of the plane wave reflection coefficient, for normal incidence on stratified media. The procedure requires the measurement of the complex reflection coefficient in two adjacent frequencies where the red part of the input impedance takes maximum or minimum value. Simulated examples are presented using ideal (without noise) and noisy data. In cases of multi-layered media, a procedure is proposed, which compines the technique developed for two-layered half-spaces, with measurements at the subjacent interfaces of the stratified dielectric profile. A number of applications in Hydrology and Environmental Geology problems is considered simulated models are created by experimental measurements of complex permittivities as found in literature. Monte-Carlo simulation is used to test method's validity. Some ideas for further development of the method are suggested.
Electric Field Tunable Topological Phases in Graphene Nanoribbons
Creators: name: Zhao, Fangzhou
name: Cao, Ting
name: Louie, Steven G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Graphene nanoribbons (GNRs) possess distinct symmetry-protected topological phases. We show, through first-principles calculations, that by applying an experimentally accessible transverse electric field (TEF), certain boron and nitrogen periodically co-doped GNRs have tunable topological phases. The tunability arises from a field-induced band inversion due to an opposite response of the conduction- and valance-band states to the electric field. With a spatially-varying applied field, segments of GNRs of distinct topological phases are created, resulting in a field-programmable array of topological junction states, each may be occupied with charge or spin. Our findings not only show that electric field may be used as an easy tuning knob for topological phases in quasi-one-dimensional systems, but also provide new design principles for future GNR-based quantum electronic devices through their topological characters.
Quantum computation, quantum state engineering, and quantum phase transitions driven by dissipation
Creators: name: Verstraete, Frank
name: Wolf, Michael M.
name: Cirac, J. Ignacio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the computational power of creating steady-states of quantum dissipative systems whose evolution is governed by time-independent and local couplings to a memoryless environment. We show that such a model allows for efficient universal quantum computation with the result of the computation encoded in the steady state. Due to the purely dissipative nature of the process, this way of doing quantum computation exhibits some inherent robustness and defies some of the DiVincenzo criteria for quantum computation. We show that there is a natural class of problems that can be solved with such a model - the preparation of ground states of frustration free quantum Hamiltonians. This allows for robust and efficient creation of exotic states that exhibit features like topological quantum order and the creation of PEPS and it proves the existence of novel dissipative phase transitions. In particular the latter can in principle be verified experimentally with present day technology such as with optical lattices.
description: 7 pages
Quantum Gravity Effects in Black Holes at the LHC
Creators: name: Alberghi, Gian Luigi
name: Casadio, Roberto
name: Tronconi, Alessandro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study possible back-reaction and quantum gravity effects in the evaporation of black holes which could be produced at the LHC through a modification of the Hawking emission. The corrections are phenomenologically taken into account by employing a modified relation between the black hole mass and temperature. The usual assumption that black holes explode around $1 $TeV is also released, and the evaporation process is extended to (possibly much) smaller final masses. We show that these effects could be observable for black holes produced with a relatively large mass and should therefore be taken into account when simulating micro-black hole events for the experiments planned at the LHC.
description: 14 pages, 8 figures, extended version of hep-ph/0601243 with new analysis of final products, final version accepted for publication in J. Phys. G
Etching of Gallium Arsenide with atomic hydrogen
Creators: name: Elzey, John W.
Publisher: name: University of British Columbia
Year: 2008

description: An optical interferometric method is used to make in-situ observations of continuous etching of the (100) GaAs surface during exposure to a known concentration of thermalised hydrogen atoms downstream from an H₂ plasma. Etch rates between 3 and 9 nm/min are followed at constant temperature within the range 229 - 360 °C. Increasing substrate temperature leads to increased rates of reaction. A Pt wire is used as an isothermal calorimeter to determine absolute H atom partial pressures on the order of 5 mTorr. Analysis of etch rate dependence on atomic hydrogen concentration verifies the surface reaction follows close to a first order rate law with respect to the hydrogen atom concentration and an Arrhenius analysis of the etch rate data yields an activation energy of 7(2) kcal/mol = 29(7) kJ/mol = 0.31(7) eV. Rate coefficients for the H + GaAs etching reaction were found in the aforementioned temperature range to have the temperature dependence kT = 10 ⁵⁷±⁰‧⁷ nm min⁻¹ Torr⁻¹ exp(-29±7 kJ/mol)/RT. Scanning electron microscope photomicrographs of etched samples reveal that large scale crystallographic etching occurs resulting in textured (100) GaAs surfaces and x-ray photoelectron spectroscopy demonstrated these surfaces were gallium-rich.
MPEC 2024-T69 : 2024 TZ
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TZ

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron IV. The quasar 3C 345 at 18 cm: Magnetic field structure and brightness temperature
Creators: name: Pötzl, F. M.
name: Lobanov, A. P.
name: Ros, E.
name: Gómez, J. L.
name: Bruni, G.
name: Bach, U.
name: Fuentes, A.
name: Gurvits, L. I.
name: Jauncey, D. L.
name: Kovalev, Y. Y.
name: Kravchenko, E. V.
name: Lisakov, M. M.
name: Savolainen, T.
name: Sokolovsky, K. V.
name: Zensus, J. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Context. Supermassive black holes in the centres of radio-loud active galactic nuclei (AGN) can produce collimated relativistic outflows (jets). Magnetic fields are thought to play a key role in the formation and collimation of these jets, but the details are much debated. Aims. We study the innermost jet morphology and magnetic field strength in the AGN 3C 345 with an unprecedented resolution using images obtained within the framework of the key science programme on AGN polarisation of the Space VLBI mission RadioAstron. Methods. We observed the flat spectrum radio quasar 3C 345 at 1.6 GHz on 2016 March 30 with RadioAstron and 18 ground-based radio telescopes in full polarisation mode. Results. Our images, in both total intensity and linear polarisation, reveal a complex jet structure at 300 $μ$as angular resolution, corresponding to a projected linear scale of about 2 pc or a few thousand gravitational radii. We identify the synchrotron self-absorbed core at the jet base and find the brightest feature in the jet 1.5 mas downstream of the core. Several polarised components appear in the Space VLBI images that cannot be seen from ground array-only images. Except for the core, the electric vector position angles follow the local jet direction, suggesting a magnetic field perpendicular to the jet. This indicates the presence of plane perpendicular shocks in these regions. Additionally, we infer a minimum brightness temperature at the largest $(u,v)$-distances of $1.1\times 10^{12}$ K in the source frame, which is above the inverse Compton limit and an order of magnitude larger than the equipartition value. This indicates locally efficient injection or re-acceleration of particles in the jet to counter the inverse Compton cooling or the geometry of the jet creates significant changes in the Doppler factor, which has to be $>11$ to explain the high brightness temperatures.
description: 10 pages, 9 figures. Accepted for publication in Astronomy & Astrophysics
The rational homology of spaces of long knots in codimension >2
Creators: name: Lambrechts, Pascal
name: Tourtchine, Victor
name: Volic, Ismar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Topology (math.AT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: Primary: 57Q45; Secondary: 55P62, 57R40

description: We determine the rational homology of the space of long knots in R^d for $d\geq4$. Our main result is that the Vassiliev spectral sequence computing this rational homology collapses at the E^1 page. As a corollary we get that the homology of long knots (modulo immersions) is the Hochschild homology of the Poisson algebras operad with a bracket of degree d-1, which can be obtained as the homology of an explicit graph complex and is in theory completely computable. Our proof is a combination of a relative version of Kontsevich's formality of the little d-disks operad and of Sinha's cosimplicial model for the space of long knots arising from Goodwillie-Weiss embedding calculus. As another ingredient in our proof, we introduce a generalization of a construction that associates a cosimplicial object to a multiplicative operad. Along the way we also establish some results about the Bousfield-Kan spectral sequences of a truncated cosimplicial space.
description: 25 pages, 2 figures
Additional file 1 of A triple-classification for differentiating renal oncocytoma from renal cell carcinoma subtypes and CK7 expression evaluation: a radiomics analysis
Creators: name: Yu, Ziyang
name: Ding, Jie
name: Pang, Huize
name: Fang, Hongkun
name: He, Furong
name: Xu, Chenxi
name: Li, Xuedan
name: Ren, Ke
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 1: Table S1. The optimization parameters of the Lasso and SVM.
Navigating the First Year: A Proposed E-Coaching Model to Ease Uncertainty for Saudi Students in University to Foster Academic and Social Engagement
Creators: name: Almuhsin, Essam Mohammed A
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 390303
subject: Higher education
classificationCode: 390405
subject: Educational technology and computing

description: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Computing, Engineering and Mathematical Sciences, La Trobe University, Victoria, Australia.
Missione cultura. Riflessioni sulla 65° edizione dell’Internationale Kurzfilmtage Oberhausen, 1-9 maggio 2019
Creators: name: Marcheschi, Elena
Publisher: name: Cinergie – Il Cinema e le altre Arti
Year: 2019

description: Cinergie – Il Cinema e le altre Arti, N. 15 (2019)
Weinberg's proposal of 1990: A very personal view
Creators: name: Machleidt, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: My personal encounter with Weinberg's proposal of 1990 was a really entertaining one: My collaborator David Entem and I had embarked to show that Weinberg's idea, though smart and beautiful, was essentially useless in practice (like so many of those genius ideas of the 1980s where people claimed to have "derived the nuclear force from QCD"). However, in trying to do so, we showed the opposite; namely, we showed that Weinberg's idea worked better than allowed by any reasonable means.
description: 5 pages. Contribution to Special Issue of Few-Body Systems: Celebrating 30 years of Steven Weinberg's papers on Nuclear Forces from Chiral Lagrangians
Charting the Landscape of Modified Gravity
Creators: name: Kaloper, Nemanja
name: Kiley, Derrick
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore brane induced gravity on a 3-brane in six locally flat dimensions. To regulate the short distance singularities in the brane core, we resolve the thin brane by a cylindrical 4-brane, with the geometry of 4D Minkowski $\times$ a circle, which has an axion flux to cancel the vacuum pressure in the compact direction. We discover a large diversity of possible solutions controlled by the axion flux, as governed by its boundary conditions. Hence brane induced gravity models really give rise to a {\it landscape} of vacua, at least semiclassically. For sub-critical tensions, the crossover scale, below which gravity may look 4D, and the effective 4D gravitational coupling are sensitive to vacuum energy. This shows how the vacuum energy problem manifests in brane induced gravity: instead of tuning the 4D curvature, generically one must tune the crossover scale. On the other hand, in the near-critical limit, branes live inside very deep throats which efficiently compactify the angular dimension. In there, 4D gravity first changes to $5D$, and only later to $6D$. The crossover scale saturates at the gravitational see-saw scale, independent of the tension. Using the fields of static loops on a wrapped brane, we check the perturbative description of long range gravity below the crossover scale. In sub-critical cases the scalars are strongly coupled already at the crossover scale even in the vacuum, because the brane bending is turned on by the axion flux. Near the critical limit, linearized perturbation theory remains under control below the crossover scale, and we find that linearized gravity around the vacuum looks like a scalar-tensor theory.
description: 47 LaTeX pages, 3 .eps figures, typos fixed to match the published version
Pressure dependence of the charge-density-wave gap in rare-earth tri-tellurides
Creators: name: Sacchetti, A.
name: Arcangeletti, E.
name: Perucchi, A.
name: Baldassarre, L.
name: Postorino, P.
name: Lupi, S.
name: Ru, N.
name: Fisher, I. R.
name: Degiorgi, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the pressure dependence of the optical properties of CeTe$_3$, which exhibits an incommensurate charge-density-wave (CDW) state already at 300 K. Our data are collected in the mid-infrared spectral range at room temperature and at pressures between 0 and 9 GPa. The energy for the single particle excitation across the CDW gap decreases upon increasing the applied pressure, similarly to the chemical pressure by rare-earth substitution. The broadening of the bands upon lattice compression removes the perfect nesting condition of the Fermi surface and therefore diminishes the impact of the CDW transition on the electronic properties of $R$Te$_3$.
description: 5 pages, 4 figures
Chimera states through invariant manifold theory
Creators: name: Eldering, Jaap
name: Lamb, Jeroen S. W.
name: Pereira, Tiago
name: Santos, Edmilson Roque dos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We establish the existence of chimera states, simultaneously supporting synchronous and asynchronous dynamics, in a network consisting of two symmetrically linked star subnetworks consisting of identical oscillators with shear and Kuramoto--Sakaguchi coupling. We show that the chimera states may be metastable or asymptotically stable. If the intra-star coupling strength is of order $\varepsilon$, the chimera states persist on time scales at least of order $1/\varepsilon$ in general, and on time-scales at least of order $1/\varepsilon^2$ if the intra-star coupling is of Kuramoto--Sakaguchi type. If the intra-star coupling configuration is sparse, the chimeras are asymptotically stable. The analysis relies on a combination of dimensional reduction using a Möbius symmetry group and techniques from averaging theory and normal hyperbolicity.
description: 32 pages, 8 figures
Transport rates and momentum isotropization of gluon matter in ultrarelativistic heavy-ion collisions
Creators: name: Xu, Zhe
name: Greiner, Carsten
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: To describe momentum isotropization of gluon matter produced in ultrarelativistic heavy-ion collisions, the transport rate of gluon drift and the transport collision rates of elastic ($gg \leftrightarrow gg$) as well as inelastic ($gg \leftrightarrow ggg$) perturbative quantum chromodynamics- (pQCD) scattering processes are introduced and calculated within the kinetic parton cascade Boltzmann approach of multiparton scatterings (BAMPS), which simulates the space-time evolution of partons. We define isotropization as the development of an anisotropic system as it reaches isotropy. The inverse of the introduced total transport rate gives the correct time scale of the momentum isotropization. The contributions of the various scattering processes to the momentum isotropization can be separated into the transport collision rates. In contrast to the transport cross section, the transport collision rate has an indirect but correctly implemented relationship with the collision-angle distribution. Based on the calculated transport collision rates from BAMPS for central Au+Au collisions at Relativistic Heavy Ion Collider energies, we show that pQCD $gg \leftrightarrow ggg$ bremsstrahlung processes isotropize the momentum five times more efficiently than elastic scatterings. The large efficiency of the bremsstrahlung stems mainly from its large momentum deflection. Due to kinematics, $2\to N$ $(N>2)$ production processes allow more particles to become isotropic in momentum space and thus kinetically equilibrate more quickly than their back reactions or elastic scatterings. We also show that the relaxation time in the relaxation time approximation, which is often used, is strongly momentum dependent and thus cannot serve as a global quantity that describes kinetic equilibration.
description: 44 pages, 16 figures, text updated, references added, 1 new figure added; final version published in PRC
Politiche e narrazioni del corpo sessuale. Sex(t)ualities. Morfologie del corpo tra visioni e narrazioni, Silvia Antosa, Mirko Lino (eds) Mimesis, Milano-Udine 2019
Creators: name: Previtali, Giuseppe
Publisher: name: Cinergie – Il Cinema e le altre Arti
Year: 2019

description: Cinergie – Il Cinema e le altre Arti, N. 15 (2019)
Σεισμική επικινδυνότητα του Ευρωπαϊκού χώρου
Creators: name: Μπάμπα, Αννα Β.
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Σεισμική επικινδυνότητα
Μοντέλο σεισμικών πηγών
Ομογενοποίηση καταλόγου σεισμών
Μέγιστες αναμενόμενες τιμές εδαφικής επιτάχυνσης
Seismic hazard assessment
Seismic source model
Homogeneous catalog of earthquakes
Maximum expected values of seismic acceleration

description: Εντατική προσπάθεια καταβάλλεται κατά τις τελευταίες δεκαετίες για την εκτίμηση της σεισμικής επικινδυνότητας σε περιοχές που καλύπτει η έκταση μιας χώρας, ή μια γεωτεκτονική ενότητα, ή ακόμα σε μεγαλύτερες εκτάσεις (π.χ. Μεσόγειος, Ευρωπαϊκός χώρος). Η μείωση των απωλειών σε ανθρώπινες ζωές και ο περιορισμός των διαταραχών της κοινωνικής και οικονομικής ζωής που προκαλείται από ένα ισχυρό σεισμό, μπορούν να επιτευχθούν μόνο μέσω των αξιόπιστων μελετών σεισμικής επικινδυνότητας, οι οποίες βοηθούν στην βελτίωση του κτιριακού σχεδιασμού μέσω των αντισεισμικών κανονισμών. (Ολόκληρη η περίληψη περιλαμβάνεται στο πλήρες κείμενο της διατριβής)
description: The mitigation of earthquake damage and loss of lives has been recognized as a major problem throughout the earthquake prone areas. During the last decades seismologists have made significant advances in the areas of seismic hazard assessment, which is defined as the probabilistic measure of ground shaking associated to the recurrence of earthquakes. (The whole abstract is contained in the full text of the dissertation)
title: Numérique et enjeux environnementaux : vision d'un opérateur de l'IT et du Shift Project
Creators: name: PERRY Nicolas
name: Orange-Shifter
Publisher: name: My University
Year: 2024
Subjects: subject: Numérique
subject: impacts environnementaux
subject: Développement durable
subject: Design
subject: Génération frugale
subject: Coopérations territoriales
subject: Technologies vertes
subject: Pari réparateur

description: Replay de la conférence de M Ludovic Arga (Orange Expert Energy & Environment - Shifter). Numérique et enjeux environnementaux : vision d'un opérateur de l'IT et du Shift Project ; le 26/09/2024
description: Climat : actu de l'été approche par scenario pour identifier les vulnérabilités interdépendance des réseaux d'infrastructure vulnérabilité des réseaux (choc mais également usures) entreprises : équation de BAGAR : la difficile équation économique d'une entreprise qui souhaite se décarboner atténuation : comment se décarboner numérique : force et vulnérabilité impact du numérique IA Gen : impact énergétique/métallique -> conflit d'usage Ouverture : Pensez hors cadre l'ingénieur est il obsolète?
description: Master
On the Head and the Tail of the Colored Jones Polynomial
Creators: name: Dasbach, Oliver T.
name: Lin, Xiao-Song
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57M25

description: The colored Jones polynomial is a series of one variable Laurent polynomials J(K,n) associated with a knot K in 3-space. We will show that for an alternating knot K the absolute values of the first and the last three leading coefficients of J(K,n) are independent of n when n is sufficiently large. Computation of sample knots indicates that this should be true for any fixed leading coefficient of the colored Jones polynomial for alternating knots. As a corollary we get a Volume-ish Theorem for the colored Jones Polynomial.
description: 14 pages, 6 figures
title: Introduction à l'écriture d'articles scientifiques
Creators: name: PILE Raphaël
Publisher: name: My University
Year: 2024
Subjects: subject: communication orale
subject: Collecte et stockage des données
subject: Génération frugale

description: Supports d'une formation de 3h: Introduction à l'écriture d'articles scientifiques. Synthèse de bonnes pratiques pour bien préparer puis réaliser la rédaction d'un article scientifique.
description: Synthèse de quelques bonnes pratiques pour bien préparer et performer une présentation technique ou scientifique. I) Cycle de production des connaissances scientifiques II) Préparation d'un article: les bonnes questions à se poser en amont III) Rédiger (efficacement) un article
description: Doctorat
description: Master
Applying the Affective Aware Pseudo Association Method to Enhance the Top-N Recommendations Distribution to Users in Group Emotion Recommender Systems
Creators: name: Leung, John Kalung
name: Griva, Igor
name: Kennedy, William G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Recommender Systems are a subclass of information retrieval systems, or more succinctly, a class of information filtering systems that seeks to predict how close is the match of the user's preference to a recommended item. A common approach for making recommendations for a user group is to extend Personalized Recommender Systems' capability. This approach gives the impression that group recommendations are retrofits of the Personalized Recommender Systems. Moreover, such an approach not taken the dynamics of group emotion and individual emotion into the consideration in making top_N recommendations. Recommending items to a group of two or more users has certainly raised unique challenges in group behaviors that influence group decision-making that researchers only partially understand. This study applies the Affective Aware Pseudo Association Method in studying group formation and dynamics in group decision-making. The method shows its adaptability to group's moods change when making recommendations.
description: 19 pages, 9 tables
Mobility of O$_2^-$ ions in supercritical Ar: Experiment and Molecular Dynamics Simulations
Creators: name: Borghesani, A. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A new analysis and new Molecular Dynamics (MD) simulations of the measurements of the mobility $μ_{i}$ of O$_{2}^{-} $ ions in dense supercritical Ar gas are reported. $μ_{i}$ shows a marked dependence on the distance from the critical temperature $T_{c}.$ A mobility defect appears as a function of the gas density and its maximum value occurs below the critical density. The locus of points of maximum mobility defect in the $P-T$ plane appears on the extrapolation of the coexistence curve into the single-phase region. MD simulations quantitatively reproduce the mobility defect near $T_{c}.$
description: 7 pages, 6 figures, submitted to International Journal of Mass Spectrometry, issue in honor of E. Illenberger
Influence of charge order on the magnetic properties of Na$_{x}$CoO$_{2}$ for $x>0.65$
Creators: name: Mukhamedshin, I. R.
name: Alloul, H.
name: Collin, G.
name: Blanchard, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have synthesized and characterized the four different stable phases of Na ordered Na$_{x}$CoO$_{2}$, for $0.65
description: 4 pages, 4 figures
Valentino, Mussolini e la gestione dell’opinione pubblica americana tra le due guerre. Giorgio Bertellini, The Divo and the Duce: Promoting Film Stardom and Political Leadership in 1920s America, University of California Press, 2019 Oakland (CA)
Creators: name: Uffreduzzi, Elisa
Publisher: name: Cinergie – Il Cinema e le altre Arti
Year: 2019

description: Cinergie – Il Cinema e le altre Arti, N. 15 (2019)
Spins in Gluino Decays
Creators: name: Alves, Alexandre
name: Eboli, Oscar
name: Plehn, Tilman
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: To unambiguously claim that we see a gluino at the LHC we need to prove its fermionic nature. Looking only at angular correlations we can distinguish a universal extra dimensional interpretation of a gluino cascade decay (assuming a bosonic heavy gluon) from supersymmetry. In addition to the known lepton--hadron asymmetries we also use of purely hadronic correlations in the gluino--sbottom decay chain.
description: 4 pages, 4 figures, to appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 2006
title: Le cycle de l'eau (H20) et l’importance des sols dans la détermination des circulations d’eaux douces continentales.
Creators: name: JAUZEIN Michel
Publisher: name: My University
Year: 2023
Subjects: subject: cycle de l'eau
subject: Développement durable
subject: Génération frugale
subject: Coopérations territoriales
subject: Technologies vertes
subject: Pari réparateur

description: Le système planétaire de la Terre, son cycle de l’eau et ses cycles biogéochimiques pour quelques éléments chimiques importants pour l’activité humaine industrielle (carbone, cuivre, lithium). Notre planète Terre est un système complexe dans lequel le vivant s’est développé aux interfaces entre les océans, les continents et l’atmosphère. La diversité de ces interfaces a permis l’implantation d’écosystèmes variés, composés de nombreuses espèces d’êtres vivants en relation entre elles, qui interagissent avec les milieux physiques en présence. Ces écosystèmes sont le siège de nombreux phénomènes physiques, chimiques et biologiques qui régulent les flux d’éléments chimiques, et des matières qui les contiennent, entre les différents compartiments de notre environnement. Par ailleurs, pratiquement tous les écosystèmes sont aujourd’hui anthropisés par le développement de l’humanité et de toutes les activités humaines. Ainsi, l’ensemble des cycles biogéochimiques sont modifiés, perturbés voire totalement transformés par les activités humaines. Il est intéressant de revenir sur les notions générales de chimie environnementale et sur les grandes lignes de quelques cycles déterminants, pour comprendre leur évolution possible sous la pression des activités humaines. En effet cette pression est croissante dans la période actuelle de la vie de notre Terre que l’on appelle de ce fait l’anthropocène. Ce cours a été donné en novembre 2023 sous forme d'un webinaire pour les enseignants Arts et Métiers
description: Le cycle de l'eau (H20) et l’importance des sols dans la détermination des circulations d’eaux douces continentales. Sommaire : Le cycle de l'eau planétaire, Des processus physiques, Des processus physico-chimiques, Des processus biologiques, Un cycle anthropique de l’eau, Une économie circulaire de l’eau ?
description: Tous publics
description: Distanciel synchrone
Corrigendum: Gian Piero Consoli, Tra ironia e torpore: appunti sul cinema di Terrence Malick
Creators: name: Consoli, Gian Piero
Publisher: name: Cinergie – Il Cinema e le altre Arti
Year: 2019

description: Cinergie – Il Cinema e le altre Arti, N. 15 (2019)
The Nearby Damped Lyman-alpha Absorber SBS 1543+593: A Large HI Envelope in a Gas-Rich Galaxy Group
Creators: name: Rosenberg, J. L.
name: Bowen, D. V.
name: Tripp, T. M.
name: Brinks, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a Very Large Array (VLA) HI 21cm map and optical observations of the region around one of the nearest damped Lyman-alpha absorbers beyond the local group, SBS 1543+593. Two previously uncataloged galaxies have been discovered and a redshift has been determined for a third. All three of these galaxies are at the redshift of SBS 1543+593 and are ~185 kpc from the damped Lyman-alpha absorber. We discuss the HI and optical properties of SBS 1543+593 and its newly identified neighbors. Both SBS 1543+593 and Dwarf 1 have baryonic components that are dominated by neutral gas -- unusual for damped Lyman-alpha absorbers for which only ~5% of the HI cross-section originates in such strongly gas-dominated systems. What remains unknown is whether low mass gas-rich groups are common surrounding gas-rich galaxies in the local universe and whether the low star-formation rate in these systems is indicative of a young system or a stable, slowly evolving system. We discuss these evolutionary scenarios and future prospects for answering these questions.
description: 11 pages, AJ accepted
A new approach to deformation equations of noncommutative KP hierarchies
Creators: name: Dimakis, Aristophanes
name: Muller-Hoissen, Folkert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: 35Q53; 35Q58; 17D99

description: Partly inspired by Sato's theory of the Kadomtsev-Petviashvili (KP) hierarchy, we start with a quite general hierarchy of linear ordinary differential equations in a space of matrices and derive from it a matrix Riccati hierarchy. The latter is then shown to exhibit an underlying 'weakly nonassociative' (WNA) algebra structure, from which we can conclude, refering to previous work, that any solution of the Riccati system also solves the potential KP hierarchy (in the corresponding matrix algebra). We then turn to the case where the components of the matrices are multiplied using a (generalized) star product. Associated with the deformation parameters, there are additional symmetries (flow equations) which enlarge the respective KP hierarchy. They have a compact formulation in terms of the WNA structure. We also present a formulation of the KP hierarchy equations themselves as deformation flow equations.
description: 25 pages
Συμπεριφορά των εσπεριδοειδών στο μαγγάνιο
Creators: name: Παπαδάκης, Ιωάννης Ε.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004

description: Σκοπός αυτής της διατριβής ήταν να μελετηθεί η συμπεριφορά των εσπεριδοειδών στο μαγγάνιο(Mn). Συνολικά πραγματοποιήθηκαν επτά πειράματα, στα οποία διερευνήθηκε η επίδραση του Mn σε πλήθος φυσιολογικών, ανατομικών και αγρονομικών παραμέτρων των φυτών. Η συγκέντρωση του Mn στο πρεπτικό μέσο συσχετίστηκε θετικά με τη συγκέντρωση του Mn και της προλίνης στη ρίζα και στο βλαστό των φυτών και τη συνολική απορρόφηση του Mn από τα φυτά. Αντίθετα η αρνητική επίδραση του Mn στον αριθμό των ριζών που εκπτύχθηκαν, υπό in vitro συνθήκες, ανά βλαστική κορυφή φράπας...(Ολόκληρη η περίληψη της διατριβής περιλαμβάνεται στο πλήρες κείμενο της διατριβής)
description: Seven experiments were carried out in order to study the effect of manganese(Mn) on various psysiological, anatomical and agronomical parameters of citrus plants. The concentrations of Mn and proline in shoots and roots as well as the total Mn uptake per plant were correlated positively with Mn concentration in the growth medium. However, when shoot tips of C. maxima(shaddock) were growing in vitro, the correlation coefficient between the Mn concentration in the growth medium and the number of roots that were formed per explant was negative...(the whole abstact is contained in the full text of the dissertation)
Language Time Series Analysis
Creators: name: Kosmidis, Kosmas
name: Kalampokis, Alkiviadis
name: Argyrakis, Panos
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We use the Detrended Fluctuation Analysis (DFA) and the Grassberger-Proccacia analysis (GP) methods in order to study language characteristics. Despite that we construct our signals using only word lengths or word frequencies, excluding in this way huge amount of information from language, the application of Grassberger- Proccacia (GP) analysis indicates that linguistic signals may be considered as the manifestation of a complex system of high dimensionality, different from random signals or systems of low dimensionality such as the earth climate. The DFA method is additionally able to distinguish a natural language signal from a computer code signal. This last result may be useful in the field of cryptography.
description: 21 pages, 5 figures, accepted in Physica A
Optical vortices in nanophotonics
Creators: name: Li, Chenhao
name: Maier, Stefan A.
name: Ren, Haoran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In the last two decades, optical vortices carried by twisted light wavefronts have attracted a great deal of interest, providing not only new physical insights into light-matter interactions, but also a transformative platform for boosting optical information capacity. Meanwhile, advances in nanoscience and nanotechnology lead to the emerging field of nanophotonics, offering an unprecedented level of light manipulation via nanostructured materials and devices. Many exciting ideas and concepts come up when optical vortices meet nanophotonic devices. Here, we provide a mini review on recent achievements made in nanophotonics for the generation and detection of optical vortices and some of their applications.
Ο ζωγράφος του Αργου: συμβολή στην έρευνα του Βοιωτικού ερυθρόμορφου κεραμικού στο δεύτερο μισό του 5ου αιώνα π.Χ.
Creators: name: Αβρονιδάκη, Χριστίνα
Publisher: name: Aristotle University of Thessaloniki
Year: 2003
Subjects: Ζωγράφος των Μυστών
Καβείριο
Μύηση
Διαβατήριες τελετές
Mystenmaler
Cabeirion
Initiation
Rites of passage

description: Ο συμβατικά ονομαζόμενος Ζωγράφος του Αργου είναι ένας από τους κύριους εκπροσώπους του βοιωτικού ερυθρόμορφου κεραμικού. Η δραστηριότητα του προσδιορίζεται χρονολογικά μεταξύ του 445/440 π.Χ. και των αρχών του 4ου π.Χ. Η εργασία του αγγειογράφου εξετάζεται στο πλαίσιο μιας συνολικής επισκόπησης των βοιωτικών ερυθρόμορφων και μελανόμορφων εργαστηρίων του β' μισού του 5ου αι. π.Χ. Σχήματα αγγείων και κατασκευαστικές λεπτομέρειες, εικονογραφικά στοιχεία, καθώς και τόποι εύρεσης οδηγούν στο συμπέρασμα ότι ο Ζ. του Αργου δραστηριοποιήθηκε μέσα στο καβειρικό εργαστήριο του Ζ. των Μυστών και συνδέεται στενά με το καβειρικό ιερό. Παρόλα αυτά στυλιστικές ομοιότητες μεταξύ των έργων του και μιας σειράς μιας σειράς ερυθρόμορφων αλλά και λευκών λικύθων σχετιζόμενων με το εργαστήριο του Ζ. του Αισχίνη αποκαλύπτουν ότι ο Ζ. του Αργου προήλθε από την Αττική και τα κεραμικά της εργαστήρια. Ύστερα από μια εκτενή εξέταση των διαβατηρίων τελετών που λαμβάνουν χώρα στο Καβείριο της Θήβας, ακολουθεί η ανάλυση των αγγείων του Ζ. του Αργου που συνδέονται με τη μύηση των νέων και με τη διονυσιακή μύηση και εντοπίζονται νέοι εικονογραφικοί τύποι αναγνώρισης τέτοιου είδους παραστάσεων. Σκηνές από το μύθο και την καθημερινή ζωή αποτελούν άλλα προσφιλή θέματα του αγγειογράφου. Τέλος γίνονται νέες αποδόσεις στον κορινθιακό και τον αττικό Κεραμεικό αγγείων που είχαν θεωρηθεί βοιωτικά από την προηγούμενη έρευνα
description: The so-called Argos Painter is one of the most important representatives of boeotian red-figure pottery. His career begins in 445/440 B.C. and extends until the beginning of the 4th century B.C. His work is examined within the framework of boeotian black and red-figure workshops in the second half of the 5th century B.C. Shapes and details of manufacture, elements of iconography and provenances lead to the conclusion that the Argos P. worked in the cabeiric workshop of the "Mystenmaler" and was closely connected to the Cabeirion of Thebes. However stylistic similarities between his works and a series of red-figured and white ground lekythoi related to the workshop of the Aischines P. reveal that the Argos P. originated from attic pottery workshops. After an extensive survey of the cites of passage taking place at the Cabeirion, the vases of the Argos P. connected to ephebic and dionysiac initiation are examined and new iconographical methods of identification of such scenes are detected. Everyday life and mythological scenes are also common in the painter's repertoire. Finally vases which had in the past been considered boeotian are attributed to corinthian and attic pottery workshops.
A Critique of the Link Approach to Exact Lattice Supersymmetry
Creators: name: Bruckmann, Falk
name: Catterall, Simon
name: de Kok, Mark
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We examine the link approach to constructing a lattice theory of N=2 super Yang Mills theory in two dimensions. The goal of this construction is to provide a discretization of the continuum theory which preserves all supersymmetries at non-zero lattice spacing. We show that this approach suffers from an inconsistency and argue that a maximum of just one of the supersymmetries can be implemented on the lattice.
description: 7 pages
The AdS(5)xS(5) superstring quantum spectrum from the algebraic curve
Creators: name: Gromov, Nikolay
name: Vieira, Pedro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a method for computing the energy level spacing around classical string solutions in AdS(5)xS(5). This method is based on the integrable structure of the string and can be applied to an arbitrary classical configuration. Our approach treats in equal footing the bosonic and fermionic excitations and provides an unambiguous prescription for the labeling of the fluctuation frequencies. Finally we revisit the computation of these frequencies for the SU(2) and SL(2) circular strings and compare our results to the existing ones.