cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Adaptive estimation of the transition density of a particular hidden Markov chain
Creators: name: Lacour, Claire
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We study the following model of hidden Markov chain: $Y_i=X_i+ε_i$, $ i=1,...,n+1$ with $(X_i)$ a real-valued positive recurrent and stationary Markov chain and $(ε_i)_{1\leq i\leq n+1}$ a noise independent of the sequence $(X_i)$ having a known distribution. We present an adaptive estimator of the transition density based on the quotient of a deconvolution estimator of the density of $X_i$ and an estimator of the density of $(X_i,X_{i+1})$. These estimators are obtained by contrast minimization and model selection. We evaluate the $L2$ risk and its rate of convergence for ordinary smooth and supersmooth noise with regard to ordinary smooth and supersmooth chains. Some examples are also detailed.
Agrion lindenii Selys 1840
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Calopterygidae
Agrion
Agrion lindenii

description: 50. A. lindenii Selys.
Klein-Asien, Algier, Süd- und Mittel- Europa.
description: Published as part of Hagen, H., 1863, Die Odonaten- und Nenropteren-Fauna Syriens und Klein-Asiens, pp. 193-199 in Wiener Entomologische Monatschrift 7 on page 198, DOI: 10.5281/zenodo.3528093
Direct photons in d+Au collisions at s_(NN)**(1/2)=200GeV with STAR
Creators: name: STAR Collaboration
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Results are presented of an ongoing analysis of direct photon production in s_(NN)=200GeV deuteron-gold collisions with the STAR experiment at RHIC. A significant excess of direct photons is observed near mid-rapidity 0
description: 4 pages, 4 figures, HotQuarks 2006
Agrion oedipus Eichwald 1829
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Calopterygidae
Agrion
Agrion oedipus

description: 51. A. oedipus Eichwald
aus Derbend, von dem eine Beschreibung mir nicht bekannt ist; vielleicht mit einer der vorigen Arten identisch.
description: Published as part of Hagen, H., 1863, Die Odonaten- und Nenropteren-Fauna Syriens und Klein-Asiens, pp. 193-199 in Wiener Entomologische Monatschrift 7 on page 198, DOI: 10.5281/zenodo.3528093
From Trapped Atoms to Liberated Quarks
Creators: name: Schaefer, Thomas
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss some aspects of cold atomic gases in the unitarity limit that are of interest in connection with the physics of dense hadronic matter. We consider, in particular, the equation of state at zero temperature, the magnitude of the pairing gap, and the phase diagram at non-zero polarization.
description: 13 pages, 5 figures; to appear in the proceedings of the International Symposium on Heavy Ion Physics 2006, Frankfurt, Germany; International Journal of Modern Physics E, in press
SOS model partition function and the elliptic weight functions
Creators: name: Pakuliak, S.
name: Rubtsov, V.
name: Silantyev, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B37; 81R10; 81R50

description: We generalize a recent observation [arXiv:math/0610433] that the partition function of the 6-vertex model with domain-wall boundary conditions can be obtained by computing the projections of the product of the total currents in the quantum affine algebra $U_{q}(\hat{\mathfrak{sl}}_{2})$ in its current realization. A generalization is proved for the the elliptic current algebra [arXiv:q-alg/9703018,arXiv:q-alg/9601022]. The projections of the product of total currents are calculated explicitly and are represented as integral transforms of the product of the total currents. We prove that the kernel of this transform is proportional to the partition function of the SOS model with domain-wall boundary conditions.
description: 21 pages, 5 figures, requires iopart package
DAMA annual modulation is not due to electron recoils from Plasma/Mirror Dark Matter with Kinetic Mixing
Creators: name: Adams, Douglas Q.
name: Jacobsen, Sunniva
name: Kelso, Chris
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If dark matter is composed of new fundamental particles, Earth's orbital motion around the Sun may induce an annual modulation in the rate at which these particles interact in a terrestrial detector. The DAMA collaboration has identified at a 12$σ$ confidence level such an annual modulation in their event rate. One previously proposed explanation is `plasma dark matter' (e.g. mirror dark matter) which would have electron recoils in the detector from interactions via kinetic mixing. We perform a chi-squared goodness of fit test of this plasma dark matter model to DAMA/LIBRA modulation amplitude which rejects the hypothesis of plasma dark matter as an explanation of this data at greater than 7$σ$.
Catalytic upgrading of plastic wastes fast pyrolysis oils towards naphtha range hydrocarbons
Creators: name: Soldatos, Petros
name: Margellou, Antigoni
name: Torofias, S.
name: Lemonidou, Angeliki
name: Triantafyllidis, Konstantinos
Publisher: name: Zenodo
Year: 2024

description: Poster on catalytic upgrading of plastics wastes fast pyrolysis oils towards naphtha range hydrocarbons
The scientific payload on-board the HERMES-TP and HERMES-SP CubeSat missions
Creators: name: Evangelista, Y.
name: Fiore, F.
name: Fuschino, F.
name: Campana, R.
name: Ceraudo, F.
name: Demenev, E.
name: Guzman, A.
name: Labanti, C.
name: La Rosa, G.
name: Fiorini, M.
name: Gandola, M.
name: Grassi, M.
name: Mele, F.
name: Milankovich, D.
name: Morgante, G.
name: Nogara, P.
name: Pal, A.
name: Piazzolla, R.
name: Caballero, S. Pliego
name: Rashevskaya, I.
name: Russo, F.
name: Sciarrone, G.
name: Sottile, G.
name: HERMES-TP, the
name: Collaborations, HERMES-SP
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: HERMES (High Energy Rapid Modular Ensemble of Satellites) Technological and Scientific pathfinder is a space borne mission based on a LEO constellation of nano-satellites. The 3U CubeSat buses host new miniaturized detectors to probe the temporal emission of bright high-energy transients such as Gamma-Ray Bursts (GRBs). Fast transient localization, in a field of view of several steradians and with arcmin-level accuracy, is gained by comparing time delays among the same event detection epochs occurred on at least 3 nano-satellites. With a launch date in 2022, HERMES transient monitoring represents a keystone capability to complement the next generation of gravitational wave experiments. In this paper we will illustrate the HERMES payload design, highlighting the technical solutions adopted to allow a wide-energy-band and sensitive X-ray and gamma-ray detector to be accommodated in a CubeSat 1U volume together with its complete control electronics and data handling system.
description: 12 pages, 13 figures. Proceedings of SPIE "Astronomical Telescopes and Instrumentation" 2020
First Results from the CHARA Array. IV. The Interferometric Radii of Low-Mass Stars
Creators: name: Berger, D. H.
name: Gies, D. R.
name: McAlister, H. A.
name: Brummelaar, T. A. ten
name: Henry, T. J.
name: Sturmann, J.
name: Sturmann, L.
name: Turner, N. H.
name: Ridgway, S. T.
name: Aufdenberg, J. P.
name: Merand, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have measured the angular diameters of six M dwarfs with the CHARA Array, a long-baseline optical interferometer located at Mount Wilson Observatory. Spectral types range from M1.0 V to M3.0 V and linear radii from 0.38 to 0.69 Rsun. These results are consistent with the seven other M-dwarf radii measurements from optical interferometry and with those for sixteen stars in eclipsing binary systems. We compare all directly measured M dwarf radii to model predictions and find that current models underestimate the true stellar radii by up to 15-20%. The differences are small among the metal-poor stars but become significantly larger with increasing metallicity. This suggests that theoretical models for low mass stars may be missing some opacity source that alters the computed stellar radii.
description: 24 pages, 5 figures, accepted for publication in the ApJ
libelluloides L.
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia

description: i. Palp. libelluloides L.
Syrien (Lederer). Die Stücke unterscheiden sich in einzelnen unbedeutenderen Merkmalen von der europäischen Stauıınart; ich vermag sie aber vorläufig nicht als Art *zu trennen.
2. Palp. libellııloídes D.? ♂ ♀ Grusien (Lederer).
Vier Stücke, alle ein Drittel kleiner als die Staınnıart. So auffällig die Kleinheit der Stücke ist, vermag ich auch hier Artunterschiede nicht. zu finden
description: Published as part of Hagen, H., 1863, Die Odonaten- und Nenropteren-Fauna Syriens und Klein-Asiens, pp. 193-199 in Wiener Entomologische Monatschrift 7 on page 198, DOI: 10.5281/zenodo.3528093
Spectral-fluctuations test of the quark-model baryon spectrum
Creators: name: Fernandez-Ramirez, C.
name: Relano, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the low-lying baryon spectrum (up to 2.2 GeV) provided by experiments and different quark models using statistical tools which allow to postulate the existence of missing levels in spectra. We confirm that the experimental spectrum is compatible with Random Matrix Theory --the paradigmatic model of quantum chaos--, and we find that the quark models are more similar to a Poisson distribution, which is not compatible with what should be expected in a correlated spectrum. From our analysis it stems that the spectral fluctuation properties of quark-model spectra are incompatible with experimental data. This result can be used to enlighten the problem of missing resonances.
description: 1 Panel with 4 figures, 1 Table, 4 pages. Accepted for publication in Physical Review Letters
Low temperature magnetic transition in RuSr2EuCeCu2O10 ruthenocuprate
Creators: name: Zivkovic, I.
name: Pajic, D.
name: Zadro, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A new magnetic transition in the ruthenocuprate parent compound RuSr2EuCeCu2O10 has been observed below 10 K. It shows up only as a kink in the imaginary part of the ac susceptibility and exhibits a pronounced frequency dependence. At the same time, the real part of the ac susceptibility and the dc magnetization study show very little change in the same temperature window suggesting only a minor fraction of the material to be involved in the transition. Frequency dependence shows excellent agreement with the predictions of the Arrhenius law known to describe well the dynamics of the superparamagnetic particles. The same type of the investigation on the RuSr2Eu1.1Ce0.9Cu2O10 composition showed no evidence of the similar transition, which points to a possible intrinsic behavior.
description: to be published in Physica C
Exploring the potentiality of standard sirens to probe cosmic opacity at high redshifts
Creators: name: Fu, Xiangyun
name: Yang, Jianfei
name: Chen, Zhaoxia
name: Zhou, Lu
name: Chen, Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, using the Gaussian process, we explore the potentiality of future gravitational wave (GW) measurements to probe cosmic opacity at high redshifts through comparing its opacity-free luminosity distance (LD) with the opacity-dependent one from the combination of Type Ia supernovae (SNIa) and gamma-ray bursts (GRBs). The GW data, SNIa and GRB data are simulated from the measurements of the future Einstein Telescope, the actual Pantheon compilation and the latest observation of GRBs compiled by L. Amati {\it et al}, respectively. A nonparametric method is proposed to probe the spatial homogeneity of cosmic transparency at high redshift by comparing the LD reconstructed from the GW data with that reconstructed from the Pantheon and GRB data. In addition, the cosmic opacity is tested by using the parametrization for the optical depth, and the results show that the constraints on cosmic opacity are more stringent than the previous ones. It shows that the future GW measurements may be used as an important tool to probe the cosmic opacity in the high redshift region.
description: 21pages, 3 figures accepted by EPJC. arXiv admin note: text overlap with arXiv:1912.02327
A case study of speculative financial bubbles in the South African stock market 2003-2006
Creators: name: Zhou, Wei-Xing
name: Sornette, Didier
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We tested 45 indices and common stocks traded in the South African stock market for the possible existence of a bubble over the period from Jan. 2003 to May 2006. A bubble is defined by a faster-than-exponential acceleration with significant log-periodic oscillations. The faster-than-exponential acceleration characteristics are tested with several different metrics, including nonlinearity on the logarithm of the price and power law fits. The log-periodic properties are investigated in detail using the first-order log-periodic power-law (LPPL) formula, the parametric detrending method, the $(H,q)$-analysis, and the second-order Weierstrass-type model, resulting in a consistent and robust estimation of the fundamental angular log-frequency $ω_1 =7\pm 2$, in reasonable agreement with previous estimations on many other bubbles in developed and developing markets. Sensitivity tests of the estimated critical times and of the angular log-frequency are performed by varying the first date and the last date of the stock price time series. These tests show that the estimated parameters are robust. With the insight of 6 additional month of data since the analysis was performed, we observe that many of the stocks on the South Africa market experienced an abrupt drop mid-June 2006, which is compatible with the predicted $t_c$ for several of the stocks, but not all. This suggests that the mini-crash that occurred around mid-June of 2006 was only a partial correction, which has resumed into a renewed bubbly acceleration bound to end some times in 2007, similarly to what happened on the S&P500 US market from Oct. 1997 to Aug. 1998.
description: 20 Latex pages including 10 figures + an appendix (1 table, 10 figures)
Minimally Invasive Mitral Valve Repair: From Total Endoscopic To Closed-Chest Robotic
Creators: name: Gallego-Poveda, Javier
name: Paulo, Nelson
name: Amorim, Mário Jorge
name: González-Rivas, Diego
name: Sandoval, Elena
name: Pereda, Daniel
name: Rato, André
Publisher: name: Portuguese Journal of Cardiac Thoracic and Vascular Surgery
Year: 2024

description: Minimally invasive cardiac surgery has evolved over the past few decades, thanks to advancements in technology and surgical techniques. These advancements have allowed surgeons to perform cardiac interventions through small incisions, reducing surgical trauma and improving patient outcomes1. However, despite these advancements, thoracoscopic mitral repair has not been widely adopted by the cardiac surgery community, possibly due to the lack of familiarity with video-assisted procedures1.
Over the years, various minimally invasive mitral valve surgery (MIMVS) techniques have been developed to achieve comparable or better results while minimizing surgical trauma. These techniques have evolved from direct-vision procedures performed through a right thoracotomy with a rib retractor to video-directed approaches using long-shafted instruments1.
Robotic surgery, introduced in the late 90s, has also played a significant role in mitral valve repair. The da Vinci system, the only robotic platform currently used for cardiac surgery, provides surgeons with enhanced dexterity and high-definition 3D visualization, allowing for precise and accurate procedure2, and is now the preferred approach for mitral repair in many programs3. The first mitral repair using
the da Vinci system was performed in Europe by Carpentier and Mohr in 1998, followed by the first mitral replacement by Chitwood in the USA in 20002-4.
The advantages of robotic technology allow surgeons to perform complex repair techniques such as papillary muscle repositioning and sliding leaflet plasty4. Studies have shown that robotic mitral surgery results in shorter ICU and hospital stays, better quality of life postoperatively, and improved cosmesis compared to conventional surgery5,6.
In our experience, we have also observed significant benefits with robotic surgery, including reduced blood loss and the need for transfusions. This can be attributed to the closed-chest technique, which eliminates the need for a thoracotomy and rib retractor, reducing the risk of bleeding associated with these approaches7.
In this article, we will compare the surgical steps of endoscopic and robotic mitral valve repair, providing detailed information on patient selection, operative techniques, and the requirements for building a successful program. By understanding the advantages and challenges of both approaches, surgeons can make informed decisions and provide the best possible care for their patients.
Combined ablation and multivalvular procedures are mostly performed in few centers by minimally invasive techniques.
description: Portuguese Journal of Cardiac Thoracic and Vascular Surgery, Vol. 30 No. 4 (2023): Oct-Dec
baetica Rbr.
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia

description: 3. Acanthaclisís Baetica Rbr.
Syrien (Lederer).
Es ﬁndet sich diese Art in Spanien und auch in Egypten.
description: Published as part of Hagen, H., 1863, Die Odonaten- und Nenropteren-Fauna Syriens und Klein-Asiens, pp. 193-199 in Wiener Entomologische Monatschrift 7 on page 198, DOI: 10.5281/zenodo.3528093
Wideband pulse propagation: single-field and multi-field approaches to Raman interactions
Creators: name: Kinsler, P.
name: New, G. H. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We model the process of ultra broadband light generation in which a pair of laser pulses separated by the Raman frequency drive a Raman transition. In contrast to the usual approach using separate field envelopes for the different frequency components, we treat the field as a single entity. This requires the inclusion of few-cycle corrections to the pulse propagation. Our single-field model makes fewer approximations and is mathematically (and hence computationally) simpler, although it does require greater computational resources to implement. The single-field theory reduces to the traditional multi-field one using appropriate approximations.
description: 6 pages, two 3-part figures
Effect of thermal fluctuations on spin degrees of freedom in spinor Bose-Einstein condensates
Creators: name: Pogosov, W. V.
name: Machida, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider the effect of thermal fluctuations on rotating spinor F=1 condensates in axially-symmetric vortex phases, when all the three hyperfine states are populated. We show that the relative phase among different components of the order parameter can fluctuate strongly due to the weakness of the interaction in the spin channel. These fluctuations can be significant even at low temperatures. Fluctuations of relative phase lead to significant fluctuations of the local transverse magnetization of the condensate. We demonstrate that these fluctuations are much more pronounced for the antiferromagnetic state than for the ferromagnetic one.
description: 5 pages, 2 figures; final version, accepted for publication in Phys. Rev. A
An innovative architecture for a wide band transient monitor on board the HERMES nano-satellite constellation
Creators: name: Fuschino, F.
name: Campana, R.
name: Labanti, C.
name: Evangelista, Y.
name: Fiore, F.
name: Gandola, M.
name: Grassi, M.
name: Mele, F.
name: Ambrosino, F.
name: Ceraudo, F.
name: Demenev, E.
name: Fiorini, M.
name: Morgante, G.
name: Piazzolla, R.
name: Bertuccio, G.
name: Malcovati, P.
name: Bellutti, P.
name: Borghi, G.
name: Dilillo, G.
name: Feroci, M.
name: Ficorella, F.
name: La Rosa, G.
name: Nogara, P.
name: Pauletta, G.
name: Picciotto, A.
name: Rashevskaya, I.
name: Rachevski, A.
name: Sottile, G.
name: Vacchi, A.
name: Virgilli, E.
name: Zampa, G.
name: Zampa, N.
name: Zorzi, N.
name: Chen, T.
name: Gao, N.
name: Cao, J.
name: Xu, Y.
name: Wang, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The HERMES-TP/SP mission, based on a nanosatellite constellation, has very stringent constraints of sensitivity and compactness, and requires an innovative wide energy range instrument. The instrument technology is based on the "siswich" concept, in which custom-designed, low-noise Silicon Drift Detectors are used to simultaneously detect soft X-rays and to readout the optical light produced by the interaction of higher energy photons in GAGG:Ce scintillators. To preserve the inherent excellent spectroscopic performances of SDDs, advanced readout electronics is necessary. In this paper, the HERMES detector architecture concept will be described in detail, as well as the specifically developed front-end ASICs (LYRA-FE and LYRA-BE) and integration solutions. The experimental performance of the integrated system composed by scintillator+SDD+LYRA ASIC will be discussed, demonstrating that the requirements of a wide energy range sensitivity, from 2 keV up to 2 MeV, are met in a compact instrument.
description: 12 pages, 10 figures. Proceedings of SPIE "Astronomical Telescopes and Instrumentation" 2020
Ο διαχωρισμός των τάξεων στην πλατωνική Πολιτεία:
Creators: name: Πετρά, Χριστίνα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Τάξεις
Πλάτων
Πολιτεία
Classes
Plato
Republic

description: Η παρούσα εργασία αναφέρεται στην “Πολιτεία” του Πλάτωνα και συγκεκριμένα στο διαχωρισμό των τάξεων στην ιδανική αυτή πολιτεία. Γίνεται αρχικά μια αναφορά στη βιογραφία και στα έργα του φιλοσόφου και στη συνέχεια στο διαχωρισμό των τριών τάξεων της ιδεώδους Πολιτείας, αφού πρώτα εξετάζεται ο όρος «τάξη» και ο ταξικός διαχωρισμός σε μία από τις δύο μεγαλύτερες δυνάμεις της αρχαίας Ελλάδας, την Αθήνα, αλλά και αυτός των ανθρώπων στην αρχαία Αίγυπτο. Δίνεται έμφαση στο πώς ο Πλάτων διαχωρίζει τις τρεις τάξεις στην ιδανική κοινωνία του, έτσι ώστε να επιτυγχάνεται η ευημερία του συνόλου των πολιτών. Εξετάζονται βέβαια και άλλες παραμέτρους που αφορούν την κοινωνική σύνθεση, όπως η δουλεία. Συμπεραίνεται τελικά αυτό το οποίο λειτούργησε κι αρχικά ως έναυσμα για την εκπόνηση της παρούσας εργασίας, η φράση του Μαρξ: «Η δημοκρατία του Πλάτωνα, μολονότι ο καταμερισμός της εργασίας παρουσιάζεται σαν συστατικό στοιχείο του κράτους, δεν είναι παρά μια αθηναϊκή εξιδανίκευση του ταξικού καθεστώτος των Αιγυπτίων».
description: This thesis refers to Plato’s Republic and specifically to the separation of the classes of citizens in this ideal Republic. At first we presented the biography and the lifework of the philosopher and after that we analyzed the separation of the three classes in Plato’s ideal-theoretical Republic, following the examination of the term “class”, the class separation in one of the two most powerful city-states in ancient Greece, Athens, as well as the examination of the social pyramid in ancient Egypt. We gave emphasis in how Plato structured his political body in order to function justly and harmonically. We also examined other parameters related to social composition, such as bondage. The final conclusion is what also stimulated this thesis, Marx’s phrase: “Plato’s democracy, although the division of labor is presented as a component of his state, in nothing more than the Athenian idealization of ancient Egyptian’s class status”.
Thermochemical recycling of LDPE through fast pyrolysis & catalytic upgrading towards naphtha range hydrocarbons
Creators: name: Soldatos, Petros
name: Margellou, Antigoni
name: Lemonidou, Angeliki
name: Triantafyllidis, Konstantinos
Publisher: name: Zenodo
Year: 2024

description: Presentation on thermochemical recycling of LDPE
Post-cardiotomy Bronchopericardial Fistula
Creators: name: Ângelo, Eurídice
name: Ferreira, Ricardo
name: Velho, Tiago R.
name: Nobre, Ângelo
Publisher: name: Portuguese Journal of Cardiac Thoracic and Vascular Surgery
Year: 2024

description: Portuguese Journal of Cardiac Thoracic and Vascular Surgery, Vol. 30 No. 4 (2023): Oct-Dec
Obstacle avoidance and path finding for mobile robot navigation
Creators: name: Kotikalapudi, Poojith
name: Elangovan, Vinayak
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper investigates different methods to detect obstacles ahead of a robot using a camera in the robot, an aerial camera, and an ultrasound sensor. We also explored various efficient path finding methods for the robot to navigate to the target source. Single and multi-iteration angle-based navigation algorithms were developed. The theta-based path finding algorithms were compared with the Dijkstra Algorithm and their performance were analyzed.
description: 11 pages, 9 figures
Gaseous Haloes: Linking Galaxies to the IGM
Creators: name: Fraternali, Filippo
name: Binney, James
name: Oosterloo, Tom
name: Sancisi, Renzo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In recent years evidence has accumulated that nearby spiral galaxies are surrounded by massive haloes of neutral and ionised gas. These gaseous haloes rotate more slowly than the disks and show inflow motions. They are clearly analogous to the High Velocity Clouds of the Milky Way. We show that these haloes cannot be produced by a galactic fountain process (supernova outflows from the disk) where the fountain gas conserves its angular momentum. Making this gas interact with a pre-existing hot corona does not solve the problem. These results point at the need for a substantial accretion of low angular momentum material from the IGM.
description: 5 pages, 3 figures, to appear in New Astronomy Review, Vol. 51; proceedings of "The Fate of Gas in Galaxies", Dwingeloo, July 2006
Struktur- und Ideenplagiat der Sozialwissenschaftlichen Informationen
Creators: name: Steller, Lea-Katharina
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: Ungarn, Sozialwissenschaft, Informationssammlung, Sozialismus, 1970er
subject: 010 Bibliografien
subject: 080 Allgemeine Sammelwerke
subject: 300 Sozialwissenschaften, Soziologie
subject: 310 Statistik
subject: 320 Politik
subject: 360 Soziale Probleme, Sozialarbeit

description: In den 1970er Jahren im sozialistischen Ungarn konnten sich Parteifunktionäre neben den Staatssicherheitsberichten in zwei weiteren, offiziell veröffentlichten Versionen über die inländischen sozialwissenschaftlichen Informationen Kenntnis verschaffen. Es wurde auf der Grundlage von täglichem Pressematerial, Zeitschriften und Jahrbüchern von Diplom-Bibliografinnen zusammengestellt und in zwei Versionen veröffentlicht.

Einige Jahre nach der Wende wurde diese mit eigenen Methoden organisierte und strukturierte Informationssammlung in einem Computersystem elektronisch gespeichert, wobei die Namen der ursprünglichen Autoren, Mitarbeitern und Herausgebern vollständig verborgen blieben.
Corrected confidence intervals for secondary parameters following sequential tests
Creators: name: Weng, R. C.
name: Coad, D. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62E20, 62F25, 62L05, 65L10 (Primary)

description: Corrected confidence intervals are developed for the mean of the second component of a bivariate normal process when the first component is being monitored sequentially. This is accomplished by constructing a first approximation to a pivotal quantity, and then using very weak expansions to determine the correction terms. The asymptotic sampling distribution of the renormalised pivotal quantity is established in both the case where the covariance matrix is known and when it is unknown. The resulting approximations have a simple form and the results of a simulation study of two well-known sequential tests show that they are very accurate. The practical usefulness of the approach is illustrated by a real example of bivariate data. Detailed proofs of the main results are provided.
description: Published at http://dx.doi.org/10.1214/074921706000000617 in the IMS Lecture Notes--Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Secondary gas-phase reactions of polyethylene pyrolysis: semi-detailed kinetics
Creators: name: Pegurri, Alessandro
name: Locaspi, Andrea
name: Mehl, Marco
name: Pelucchi, Matteo
name: Stagni, Alessandro
name: Faravelli, Tiziano
Publisher: name: Zenodo
Year: 2024

description: Presentation on secondary gas-phase reactions of PE pyrolysis
Dye stabilization and wavelength tunability in lasing fibers based on DNA
Creators: name: Persano, Luana
name: Szukalski, Adam
name: Gaio, Michele
name: Moffa, Maria
name: Salvadori, Giacomo
name: Sznitko, Lech
name: Camposeo, Andrea
name: Mysliwiec, Jaroslaw
name: Sapienza, Riccardo
name: Mennucci, Benedetta
name: Pisignano, Dario
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Lasers based on biological materials are attracting an increasing interest in view of their use in integrated and transient photonics. DNA as optical biopolymer in combination with highly-emissive dyes has been reported to have excellent potential in this respect, however achieving miniaturized lasing systems based on solid-state DNA shaped in different geometries to confine and enhance emission is still a challenge, and physico-chemical mechanisms originating fluorescence enhancement are not fully understood. Herein, a class of wavelength-tunable lasers based on DNA nanofibers is demonstrated, for which optical properties are highly controlled through the system morphology. A synergistic effect is highlighted at the basis of lasing action. Through a quantum chemical investigation, we show that the interaction of DNA with the encapsulated dye leads to hindered twisting and suppressed channels for the non-radiative decay. This is combined with effective waveguiding, optical gain, and tailored mode confinement to promote morphologically-controlled lasing in DNA-based nanofibers. The results establish design rules for the development of bright and tunable nanolasers and optical networks based on DNA nanostructures.
description: 31 pages, 11 figures and 2 tables
Το κάλλος και οι οπτικές τέχνες στις Εννεάδες του Πλωτίνου:
Creators: name: Κωνσταντινίδου, Παρασκευή Χαραλάμπους
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Πλωτίνος
Εννεάδες
Οπτικές τέχνες
Plotinus
Enneads
Visual arts

description: Μέσα από τη μελέτη των Εννεάδων, είδαμε το μεταφυσικό σύστημα του Πλωτίνου. Επικεντρωθήκαμε στις τρεις Πραγματείες του, στις οποίες αναπτύσσεται πλήρως, μια φιλοσοφία του Ωραίου. Αναφερθήκαμε στην έννοια της τέχνης στην αρχαιότητα και στην ξεχωριστή θέση που κατέχει αυτή αλλά και ο καλλιτέχνης στις Εννεάδες, που με τον Πλωτίνο αποκτούν πρωτοκαθεδρία, άγνωστη ως τότε. Είδαμε τη σημασία που έχουν οι οπτικές τέχνες μέσα στο έργο του φιλοσόφου και το ρόλο που αυτές διαδραματίζουν στην πνευματική ανύψωση του ανθρώπου, καθώς αυτές γίνονται η οδός που τον οδηγεί από τα αισθητή ωραιότητα στην πνευματική. Παρατηρήσαμε ότι μέσα στους αιώνες το έργο του επηρέασε Λατίνους και Καππαδόκες Πατέρες και αποτέλεσε γέφυρα μεταξύ Ανατολής και Δύσης. Είδαμε ακόμη ότι στο έργο του βρήκαν το θεωρητικό υπόβαθρο οι πρωτοποριακές καλλιτεχνικές αντιλήψεις πολλών και διαφορετικών εποχών.
description: Through the study of Enneads, we saw the metaphysical system of Plotinus. We focused on his treatises in which one philosophy of Beauty is developed utterly. We referred to the notion of art in ancient times and the exceptional place it possesses, but the artist as well in Enneads, who with Plotinus acquire primacy, unknown till then. We saw how significant the visual arts are in the philosopher’s work and the role they play in man’s mental elevation, as they become the way which leads him from the tangible beauty to the mental One. We observed through the ages, that his work influenced the Latin and the Fathers from Cappadocia and it comprised the bridge between East and West. We also saw that a lot of artistic conceptions from numerous and various times found the theoretical pedestal in his work.
trigrammus Pallas.
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia

description: 4. Myrmeleon trigrammus Pallas.
Syrien (Lederer).
Diese Art (M. pictııs F., M. /flavus Rbr.) scheint weit verbreitet; sie findet sich in ganz Süd-Europa und geht wohl nach Egypteu und vielleicht nach Indien (M. acerbus Wa.lk.) hinüber.
description: Published as part of Hagen, H., 1863, Die Odonaten- und Nenropteren-Fauna Syriens und Klein-Asiens, pp. 193-199 in Wiener Entomologische Monatschrift 7 on page 198, DOI: 10.5281/zenodo.3528093
Nonlinear Spectral Geometry Processing via the TV Transform
Creators: name: Fumero, Marco
name: Moeller, Michael
name: Rodolà, Emanuele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: We introduce a novel computational framework for digital geometry processing, based upon the derivation of a nonlinear operator associated to the total variation functional. Such operator admits a generalized notion of spectral decomposition, yielding a sparse multiscale representation akin to Laplacian-based methods, while at the same time avoiding undesirable over-smoothing effects typical of such techniques. Our approach entails accurate, detail-preserving decomposition and manipulation of 3D shape geometry while taking an especially intuitive form: non-local semantic details are well separated into different bands, which can then be filtered and re-synthesized with a straightforward linear step. Our computational framework is flexible, can be applied to a variety of signals, and is easily adapted to different geometry representations, including triangle meshes and point clouds. We showcase our method throughout multiple applications in graphics, ranging from surface and signal denoising to detail transfer and cubic stylization.
description: 16 pages, 20 figures
Stability assessment of a tailings storage facility using a non-local constitutive model accounting for anisotropic strain-softening
Creators: name: Sottile, M. G.
name: Labanda, N. A.
name: Kerguelén, A.
name: Cueto, I. A.
name: Sfriso, Alejo O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Recent failures of upstream-raised tailings storage facilities (TSF) raised con-cerns on the future use of these dams. While being cost-effective, they entail higher risks than conventional dams, as stability largely relies on the strength of tailings, which are loose and normally-consolidated materials that may exhibit strain-softening during un-drained loading. Current design practice involves limit equilibrium analyses adopting a fully-softened shear strength; while being conservative, this practice neglects the work input required to start the softening process that leads to progressive failure. This paper describes the calibration and application of the NGI-ADPSoft constitutive model to evaluate the potential of static liquefaction of an upstream-raised TSF and provides an indirect measure of resilience. The constitutive model incorporates undrained shear strength anisotropy and a mesh-independent anisotropic post-peak strain softening. The calibration is performed using laboratory testing, including anisotropically-consolidated triaxial compression tests and direct simple shear tests. The peak and residual undrained shear strengths are validated by statistical interpretation of the available CPTu data. It is shown that this numerical exercise is useful to verify the robustness of the TSF design.
description: NGI-ADPSoft, Plaxis 2D, Strain-softening, Tailings, Static Liquefaction
The FIP and Inverse FIP Effects in Solar Flares
Creators: name: Laming, J. Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Inverse First Ionization Potential (FIP) Effect, the depletion in coronal abundance of elements like Fe, Mg, and Si that are ionized in the solar chromosphere relative to those that are neutral, has been identified in several solar flares. We give a more detailed discussion of the mechanism of fractionation by the ponderomotive force associated with magnetohydrodynamic waves, paying special attention to the conditions in which Inverse FIP fractionation arises in order to better understand its relation to the usual FIP Effect, i.e. the enhancement of coronal abundance of Fe, Mg, Si, etc. The FIP Effect is generated by parallel propagating Alfvén waves, with either photospheric, or more likely coronal, origins. The Inverse FIP Effect arises as upward propagating fast mode waves with an origin in the photosphere or below, refract back downwards in the chromosphere where the Alfvén speed is increasing with altitude. We give a more physically motivated picture of the FIP fractionation, based on the wave refraction around inhomogeneities in the solar atmosphere, and inspired by previous discussions of analogous phenomena in the optical trapping of particles by laser beams. We apply these insights to modeling the fractionation and find good agreement with the observations of Katsuda et al. (2020; arXiv:2001.10643) and Dennis et al. (2015; arXiv:1503.01602).
description: 13 pages, 3 figures, accepted to ApJ
Rapid X-ray Declines and Plateaus in Swift GRB Light Curves Explained by A Highly Radiative Blast Wave
Creators: name: Dermer, Charles D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: GRB X-ray light curves display rapid declines followed by a gradual steepening or plateau phase in >~ 30% of GRBs in the Swift sample. Treating the standard relativistic blastwave model in a uniform circumburst medium, it is shown that if GRBs accelerate ultra-high energy cosmic rays through a Fermi mechanism, then the hadronic component can be rapidly depleted by means of photopion processes on time scales ~100 - 10^4 s after the GRB explosion. While discharging the hadronic energy in the form of ultra-high energy cosmic ray neutrals and escaping cosmic-ray ions, the blast wave goes through a strongly radiative phase, causing the steep declines observed with Swift. Following the discharge, the blast wave recovers its adiabatic behavior, forming the observed plateaus or slow declines. These effects are illustrated by calculations of model bolometric light curves. The results show that steep X-ray declines and plateau features occur when GRB sources take place in rather dense media, with n >~ 100 cc out to >~ 10^17 cm.
description: 13 pages, 7 figs, minor changes from previous version; accepted for publication in ApJ
Extended Studies of Separability Functions and Probabilities and the Relevance of Dyson Indices
Creators: name: Slater, Paul B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We report substantial progress in the study of separability functions and their application to the computation of separability probabilities for the real, complex and quaternionic qubit-qubit and qubit-qutrit systems. We expand our recent work (arXiv:0704.3723), in which the Dyson indices of random matrix theory played an essential role, to include the use of not only the volume element of the Hilbert-Schmidt (HS) metric, but also that of the Bures (minimal monotone) metric as measures over these finite-dimensional quantum systems. Further, we now employ the Euler-angle parameterization of density matrices (rho), in addition to the Bloore parameterization. The Euler-angle separability function for the minimally degenerate complex two-qubit states is well-fitted by the sixth-power of the participation ratio, R(rho)=1/Tr(rho)^2. Additionally, replacing R(rho) by a simple linear transformation of the Verstraete-Audenaert-De Moor function (arXiv:quant-oh/0011111), we find close adherence to Dyson-index behavior for the real and complex (nondegenerate) two-qubit scenarios. Several of the analyses reported help to fortify our conjectures that the HS and Bures separability probabilities of the complex two-qubit states are 8/33 = 0.242424 and 1680 (sqrt{2}-1)/pi^8 = 0.733389, respectively. Employing certain regularized beta functions in the role of Euler-angle separability functions, we closely reproduce--consistently with the Dyson-index ansatz--several HS two-qubit separability probability conjectures.
description: 45 pages, 23 figures
A Family of Constitutive Models Implemented in PLAXIS to Simulate Cemented Mine Backfill
Creators: name: Sottile, M. G.
name: Labanda, N. A.
name: Mendive, I. Garcia
name: Ledesma, O.
name: Sfriso, A. O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: A family of constitutive models for mine cemented backfill is presented. Four formulas for the density- and pressure-dependency of elastic moduli, five formulas for the density- and pressure-dependency of friction angle and four formulas for the age-dependency of the elastic moduli and effective cohesion are incorporated into an isotropic hypoelasticity with Mohr-Coulomb perfect plasticity framework and implemented in PLAXIS as a user-defined material model. This family includes the standard Mohr-Coulomb, Bolton, Leps, Barton and Hoek- Brown models as trivial cases when both nonlinear elasticity and age-dependency are switched off. In this paper, the formulation of the models is introduced, the basis of the numerical implementation is outlined, and a case history of the application to the cemented backfill of a sublevel stoping mine is presented as an example.
description: Conference paper
Ιστορική εξέλιξη των μορφών διαθήκης από τις ιουστινιάνειες ρυθμίσεις μέχρι τις αρμενοπούλειες διατάξεις:
Creators: name: Φουντουκοπούλου, Σωτηρία Γρηγορίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Διαθήκη
Γραπτή
Προφορική
Testament
Written
Oral

description: Σκοπός της διατριβής ήταν η μελέτη μορφών διαθήκης από την εποχή της ιουστινιάνειας κωδικοποιήσεως μέχρι τις αρμενοπούλειες διατάξεις. Εξετάσαμε επίσης μορφές διαθήκης πριν την άνοδο του Ιουστινιανού στην εξουσία. Στη συνέχεια παρουσιάσαμε αναλυτικά τα χαρακτηριστικά μορφών διαθήκης, καθώς και τις απαραίτητες προϋποθέσεις για τη σύννομη κατάρτισή τους. Ακόμη αναφερθήκαμε αναλυτικά στις μορφές διαθήκης κατά την περίοδο των Ισαύρων αυτοκρατόρων και μας απασχόλησε η εξέλιξη των προϋποθέσεων για τη νόμιμη κατάρτισή τους. Ένα άλλο θέμα που θίξαμε ήταν οι διαφοροποιήσεις των προϋποθέσεων σύνταξης διαθήκης την περίοδο των Μακεδόνων αυτοκρατόρων και παρουσιάσαμε σχετικά τις αρμενοπούλειες διατάξεις. Ασχοληθήκαμε επιπλέον με την ιστορική διάσταση της εξέλιξης των μορφών διαθήκης στην εξεταζόμενη χρονική περίοδο και διαπιστώσαμε την επίδραση του εθιμικού δικαίου στη διαμόρφωση των κανόνων του θετού δικαίου.
description: The aim of the present thesis was the study of types of testaments from justinianian to armenopoulian rules. We also examined types of testaments before Justinian becomes emperor. Then we presented thoroughly the features of types of testaments and the necessary presuppositions for their legitimate formation. Furthermore, we analyzed types of testaments when Isavri were emperors and we examined the evolution of presuppositions for their legitimate formation. We also examined the differences of the presuppositions of legitimate formation of testaments when Macedonians were emperors and we presented the relevant armenopoulian rules. Another aim of this study was the historical aspect of the evolution of testaments during the period, which the present thesis presents, and we realized the impact of customary law on the formation of obligatory written law.
Multimodal oscillations in systems with strong contraction
Creators: name: Medvedev, Georgi
name: Yoo, Yun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: One- and two-parameter families of flows in $R^3$ near an Andronov-Hopf bifurcation (AHB) are investigated in this work. We identify conditions on the global vector field, which yield a rich family of multimodal orbits passing close to a weakly unstable saddle-focus and perform a detailed asymptotic analysis of the trajectories in the vicinity of the saddle-focus. Our analysis covers both cases of sub- and supercritical AHB. For the supercritical case, we find that the periodic orbits born from the AHB are bimodal when viewed in the frame of coordinates generated by the linearization about the bifurcating equilibrium. If the AHB is subcritical, it is accompanied by the appearance of multimodal orbits, which consist of long series of nearly harmonic oscillations separated by large amplitude spikes. We analyze the dependence of the interspike intervals (which can be extremely long) on the control parameters. In particular, we show that the interspike intervals grow logarithmically as the boundary between regions of sub- and supercritical AHB is approached in the parameter space. We also identify a window of complex and possibly chaotic oscillations near the boundary between the regions of sub- and supercritical AHB and explain the mechanism generating these oscillations. This work is motivated by the numerical results for a finite-dimensional approximation of a free boundary problem modeling solid fuel combustion.