cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Η εκφορά του γραπτού αποδεικτικού λόγου στη Ξένη Γλώσσα 1 και στην Ξένη Γλώσσα 2
Creators: name: Μπαδράκα, Ζωή Χριστόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Σώματα Κειμένων
Ελαφριά Ρήματα
Συμφράσεις
Corpora
Light Verbs
Collocations

description: Σκοπός της συγκεκριμένης διατριβής ήταν η μελέτη της εκφοράς του γραπτού αποδεικτικού λόγου στην ΞΓ1 και στην ΞΓ2. Μελετήσαμε τις γραπτές παραγωγές Ελληνόφωνων σπουδαστών της Γαλλικής γλώσσας και συγκρίναμε σε διάφορα επίπεδα την εκφορά αυτού του αποδεικτικού λόγου σε σχέση με τους Ελληνόφωνους σπουδαστές του αντίστοιχου τμήματος της Αγγλικής γλώσσας. Δώσαμε αρχικά κάποιους ορισμούς των Σωμάτων Κειμένων (ΣΚ) και περιγράψαμε τη συμβολή τους στον χώρο της Γλωσσολογίας γενικά, τις εφαρμογές τους, τα πλεονεκτήματα και τα μειονεκτήματα που παρουσιάζουν. Επιπρόσθετα, αναφερθήκαμε στα είδη των ΣΚ και πιο συγκεκριμένα στα Σώματα Κειμένων Μαθητών (ΣΚΜ), στα είδη που επίσης τα αποτελούν καθώς και στα ελαφριά ρήματα. Παρουσιάσαμε τα κριτήρια καθορισμού τους και τον τρόπο διδασκαλίας τους. Κάναμε μια αναφορά στην διδασκαλία των δύο ξένων γλωσσών, της αγγλικής και της γαλλικής, θέσαμε ερευνητικά ερωτήματα και προσπαθήσαμε να ερμηνεύσουμε και να τα αναλύσουμε μέσα από τη σύγκριση των δύο αυτών ΣΚΜ.
description: The aim of the present thesis was the study of the argumentative discourse in Foreign Language 1 and Foreign Language 2. We studied the written productions of the Greek speaking students of the School of French and compared the argumentative discourse in several levels with the productions of the Greek speaking students of the School of English. Initially we defined Corpora and described their contribution to the field of Linguistics, their applications, as well as the advantages and disadvantages they present. Furthermore, we mentioned the different types of Corpora and particularly the Learner Corpora, the different types they are also distinguished in and we analysed the light verbs. We presented their definition criteria and also the various teaching methods used for them. We mentioned the teaching of the two foreign languages, English and French, we presented the research questions and tried to interpret and analyse them through the comparison of these two Corpora.
Platanthera medogensis X. H. Jin & D. L. Lin, sp. nov.
Creators: name: Lin, Dongliang
name: Li, Jianwu
name: Ye, Chao
name: Wen, Haixia
name: Jin, Xiaohua
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Platanthera
Platanthera medogensis

description: Platanthera medogensis X.H. Jin & D.L. Lin, sp. nov. (Figure 2, 3)
Type:— CHINA. Xizang Autonomous Region, Nyingchi City, Motuo County, Gedang, terrestrial under humid alpine conifer forests, 3450 m, 31 Jul 2023, Xiaohua Jin et al. 40288 (holotype PE!, isotypes, PE!).
Diagnosis. Platanthera medogensis is close to P. bakeriana and P. chiloglossa, but is readily distinguished from P. bakeriana by having spur slightly longer than ovary (vs. more than twice in P. bakeriana) and ovate-lanceolate lip concave at base with two calli, and from P. chiloglossa in its linear viscidia (vs. narrowly oblong viscidia) and ovate-lanceolate lip concave at base with two calli (Table 1).
Herbs, terrestrial, plants 25 cm tall. Rootstock creeping, fleshy, cylindric, stout. Stem erect, with 1 tubular membranous sheath at the base, 2-leaved. Basal leaf oblong-elliptic, 11× 1.3 cm, narrowing, clasping the stem, apex acute or obtuse-rounded; the upper leaf smaller, ovate-lanceolate, 3.5× 0.8 cm. Sterile bracts foliaceous, ovate-lanceolate, 2× 0.3 cm; raceme ca. 11 cm long, with 5–13 sparsely arranged flowers. Floral bracts ovate-lanceolate, equal to or slightly shorter than the ovary, 1× 0.3 cm, apex acute; flowers yellow-green; ovary arcuate, cylindric, tapering towards the upper part, ovary and pedicel ca. 1 cm long. Dorsal sepal ovate, concave, ca. 0.4× 0.2 cm, apex acute, one-veined; lateral sepals reflexed, ovate, oblique, 0.4× 0.1 mm, apex acute; petals ovate-elliptic, 0.4× 0.2 cm, apex slightly obtuse, erect, fused with dorsal sepal to form a hood-like structure, thickened on the side adjacent to the lip; lip ovate-lanceolate, apex acute, base concave and, with 2 horn-like calli, margins erect at base; 0.3× 0.2 cm; spur pendulous, cylindric, slightly longer than ovary, apex acute, about 1.2 cm long. Column short, ca. 0.5 mm long; anther locules almost parallel, about 1 mm long; connective narrow; pollinia elongate-obovoid, ca. 1 mm in diameter, attached to slender stalks and linear viscidia; staminodes 2, located on both sides of the base of anther locules, spherical, about 0.2 mm; rostellum concave, triangular, short; stigmas 2, slightly protruding, located below the rostellum, positioned behind the mouth of spur.
Etymology: The epithet “ medogensis ” refers to the type locality of the new species, Motuo county, Xizang, China.
Distribution and habitat: P. medogensis grows under the subtropical alpine conifer forests of Abies, at elevation of ca. 3450m.
Phenology: Flowering in July–August.
description: Published as part of Lin, Dongliang, Li, Jianwu, Ye, Chao, Wen, Haixia & Jin, Xiaohua, 2024, A new species of Platanthera (Orchidaceae, Orchideae) from southeast of Xizang, China, pp. 116-124 in Phytotaxa 646 (2) on pages 117-121, DOI: 10.11646/phytotaxa.646.2.2, http://zenodo.org/record/13215258
Resonant purification of mixed states for closed and open quantum systems
Creators: name: Romano, Raffaele
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Pure states are fundamental for the implementation of quantum technologies, and several methods for the purification of the state of a quantum system S have been developed in the past years. In this letter we present a new approach, based on the interaction of S with an auxiliary system P, having a wide range of applicability. Considering two-level systems S and P and assuming a particular interaction between them, we prove that complete purifications can be obtained under suitable conditions on the parameters characterizing P. Using analytical and numerical tools, we show that the purification process exhibits a resonant behavior in both the cases of system isolated from the external environment or not.
description: 4 pages, LaTex
Probabilistic Teleportation of a Qudit
Creators: name: Pati, Arun K.
name: Agrawal, Pankaj
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is known that if the shared resource is a maximally entangled state then it is possible to teleport an unknown state with unit fidelity and unit probability. However, if the shared resource is a non-maximally entangled state then one has to follow a probabilistic scheme where one can teleport a qubit with unit fidelity and non-unit probability. In this work, we investigate the feasibility of using partially entangled states as a resource for quantum teleportation of a qudit. We also give an expression for the probability of successful teleportation of an unknown qudit.
description: Latex, no figures
Perspective: Reproducible Coherence Characterization of Superconducting Quantum Devices
Creators: name: McRae, Corey Rae H
name: Stiehl, Gregory M
name: Wang, Haozhi
name: Lin, Sheng-Xiang
name: Caldwell, Shane A
name: Pappas, David P
name: Mutus, Josh
name: Combes, Joshua
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: As the field of superconducting quantum computing approaches maturity, optimization of single-device performance is proving to be a promising avenue towards large-scale quantum computers. However, this optimization is possible only if performance metrics can be accurately compared among measurements, devices, and laboratories. Currently such comparisons are inaccurate or impossible due to understudied errors from a plethora of sources. In this Perspective, we outline the current state of error analysis for qubits and resonators in superconducting quantum circuits, and discuss what future investigations are required before superconducting quantum device optimization can be realized.
The Stability of Double White Dwarf Binaries Undergoing Direct Impact Accretion
Creators: name: Motl, Patrick M.
name: Frank, Juhan
name: Tohline, Joel E.
name: D'Souza, Mario C. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present numerical simulations of dynamically unstable mass transfer in a double white dwarf binary with initial mass ratio, q = 0.4. The binary components are approximated as polytropes of index n = 3/2 and the initially synchronously rotating, semi-detached equilibrium binary is evolved hydrodynamically with the gravitational potential being computed through the solution of Poisson's equation. Upon initiating deep contact in our baseline simulation, the mass transfer rate grows by more than an order of magnitude over approximately ten orbits, as would be expected for dynamically unstable mass transfer. However, the mass transfer rate then reaches a peak value, the binary expands and the mass transfer event subsides. The binary must therefore have crossed the critical mass ratio for stability against dynamical mass transfer. Despite the initial loss of orbital angular momentum into the spin of the accreting star, we find that the accretor's spin saturates and angular momentum is returned to the orbit more efficiently than has been previously suspected for binaries in the direct impact accretion mode. To explore this surprising result, we directly measure the critical mass ratio for stability by imposing artificial angular momentum loss at various rates to drive the binary to an equilibrium mass transfer rate. For one of these driven evolutions, we attain equilibrium mass transfer and deduce that effectively q_crit has evolved to approximately 2/3. Despite the absence of a fully developed disk, tidal interactions appear effective in returning excess spin angular momentum to the orbit.
description: 27 pages, 6 figures. Please see http://www.phys.lsu.edu/faculty/tohline/astroph/mftd07/ for animations and full resolution figures. Accepted for publication in the Astrophysical Journal
Strafverfolgung 2013. Land Sachsen-Anhalt
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2015
Subjects: subject: Strafverfolgung, Sachsen-Anhalt, Statistik
subject: 360

description: Die bundeseinheitlich durchgeführte Strafverfolgungsstatistik ist eine koordinierte Länderstatistik. Sie ist neben der Strafvollzugsstatistik und der Polizeilichen Kriminalstatistik eine der wichtigsten amtlichen Datensammlungen zur Betrachtung der Kriminalitätslage. Die Statistik gibt einen Überblick über die Entscheidungen der Strafgerichte und Entwicklung der gerichtlich registrierten Kriminalität. Sie dient zur Ermittlung der Ursachen, Erscheinungsformen und Entwicklung der Straffälligkeit. In der Strafverfolgungsstatistik werden alle Abgeurteilten nachgewiesen, gegen die rechtskräftig Strafbefehle erlassen wurden bzw. Strafverfahren nach Eröffnung des Hauptverfahrens durch Urteil oder Einstellungsbeschluss rechtskräftig abgeschlossen worden sind. Nicht erfasst werden Ordnungswidrigkeiten, Entscheidungen vor Eröffnung des Hauptverfahrens sowie Entscheidungen nach Rechtskraft des Urteils. Die Statistik berichtet ausführlich über die Art der Straftat, die Art und Höhe der erkannten Strafen sowie über angeordnete Maßnahmen und Maßregeln. Bei den Verurteilten werden detaillierte demographische Merkmale (z. B. Geschlecht, Alter zur Tatzeit, Staatsangehörigkeit) sowie kriminologische Besonderheiten (z. B. Untersuchungshaft, Vorstrafen, Täter- Opfer-Ausgleich) nachgewiesen. Die monatlichen Erhebungen der Strafverfolgungsstatistik werden für das Land Sachsen- Anhalt auf der Grundlage der AO des MJ über die Erfassung von statistischen Daten über die Strafverfolgung vom 18.01.2007 - 4206-401.1; JMBl. LSA Nr. 4/2007 vom 29.01.2007 i.V.m. dem Landesstatistikgesetz Sachsen-Anhalt (LStatG-LSA) vom 18.05.1995 (GVBl. LSA S. 130), zuletzt geändert durch Art. 47 des Gesetzes vom 18.11.2005 (GVBl. LSA S. 698, 707) durchgeführt. Über die angezeigten und aufgeklärten Straftaten sowie über die ermittelten Tatverdächtigen informiert die Polizeiliche Kriminalstatistik.
Meromorphic Solutions of Linear Differential Systems, Painleve type functions
Creators: name: Sakhnovich, Lev
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 34M05, 34M55, 47B38

description: We consider the $n{\times}n$ matrix linear differential systems in the complex plane. We find necessary and sufficient conditions under which these systems have meromorphic fundamental solutions. Using the operator identity method we construct a set of systems which have meromorphic solutions. We prove that the well known operator with the sine kernel generates a class of meromorphic Painleve type functions. The fifth Painleve function belongs to this class. Hence we obtain a new and simple proof that the fifth Painleve function is meromorphic.
Additional file 1 of Paclitaxel and cisplatin combined with concurrent involved-field irradiation in definitive chemoradiotherapy for locally advanced esophageal squamous cell carcinoma: a phase II clinical trial
Creators: name: Li, Hui
name: Fang, Ying
name: Gu, Dayong
name: Du, Mingyu
name: Zhang, Zhi
name: Sun, Lei
name: Zhou, Guoren
name: Ye, Jinjun
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Marine Biology
Cancer

description: Additional file 1. File 1: Full inclusion and exclusion criteria. File 2: Complete dose adjustment principles.
Soft SUSY Breaking Grand Unification: Leptons vs Quarks on the Flavor Playground
Creators: name: Ciuchini, M.
name: Masiero, A.
name: Paradisi, P.
name: Silvestrini, L.
name: Vempati, S. K.
name: Vives, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We systematically analyze the correlations between the various leptonic and hadronic flavor violating processes arising in SUSY Grand Unified Theories. Using the GUT-symmetric relations between the soft SUSY breaking parameters, we assess the impact of hadronic and leptonic flavor observables on the SUSY sources of flavor violation.
description: 39 pages, 10 figures
Strafverfolgungen 2016. Land Sachsen-Anhalt
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2017
Subjects: subject: Strafverfolgung, Sachsen-Anhalt, Statistik
subject: 360

description: Die bundeseinheitlich durchgeführte Strafverfolgungsstatistik ist eine koordinierte Länderstatistik. Sie ist neben der Strafvollzugsstatistik und der Polizeilichen Kriminalstatistik eine der wichtigsten amtlichen Datensammlungen zur Betrachtung der Kriminalitätslage. Die Statistik gibt einen Überblick über die Entscheidungen der Strafgerichte und Entwicklung der gerichtlich registrierten Kriminalität. Sie liefert Informationsmaterial zur Ermittlung der Ursachen, Erscheinungsformen und Entwicklung der Straffälligkeit. In der Strafverfolgungsstatistik werden alle Abgeurteilten nachgewiesen, gegen die rechtskräftig Strafbefehle erlassen wurden bzw. Strafverfahren nach Eröffnung des Hauptverfahrens durch Urteil oder Einstellungsbeschluss rechtskräftig abgeschlossen worden sind. Nicht erfasst werden Entscheidungen vor Eröffnung des Hauptverfahrens, Entscheidungen nach Rechtskraft des Urteils sowie Ordnungswidrigkeiten. Die Statistik berichtet ausführlich über die Art der Straftat, die Art und Höhe der erkannten Strafen sowie über angeordnete Maßnahmen und Maßregeln. Bei den Verurteilten werden detaillierte personenbezogene Merkmale (z. B. Geschlecht, Alter zur Tatzeit, Staatsangehörigkeit) sowie kriminologische Besonderheiten (z. B. Untersuchungshaft, Vorstrafen, Täter-Opfer-Ausgleich) nachgewiesen. Die monatlichen Erhebungen der Strafverfolgungsstatistik werden für das Land Sachsen- Anhalt auf der Grundlage der AV des MJ über die Erfassung von statistischen Daten über die Strafverfolgung vom 18.01.2007 - 4206-401.1; MBl. LSA 2007 S. 41 i. V. m. dem Landesstatistikgesetz Sachsen-Anhalt (StatG-LSA) vom 18.05.1995 (GVBl. LSA S. 130), zuletzt geändert durch Art. 47 des Gesetzes vom 18.11.2005 (GVBl. LSA S. 698, 707) durchgeführt. Über die angezeigten und aufgeklärten Straftaten sowie über die ermittelten Tatverdächtigen informiert die Polizeiliche Kriminalstatistik, welche vom Landeskriminalamt Sachsen-Anhalt herausgegeben wird.
Girasol, a Sky Imaging and Global Solar Irradiance Dataset
Creators: name: Terrén-Serrano, Guillermo
name: Bashir, Adnan
name: Estrada, Trilce
name: Martínez-Ramón, Manel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The energy available in Micro Grid (MG) that is powered by solar energy is tightly related to the weather conditions in the moment of generation. Very short-term forecast of solar irradiance provides the MG with the capability of automatically controlling the dispatch of energy. We propose to achieve this using a data acquisition systems (DAQ) that simultaneously records sky imaging and Global Solar Irradiance (GSI) measurements, with the objective of extracting features from clouds and use them to forecast the power produced by a Photovoltaic (PV) system. The DAQ system is nicknamed as the \emph{Girasol Machine} (Girasol means Sunflower in Spanish). The sky imaging system consists of a longwave infrared (IR) camera and a visible (VI) light camera with a fisheye lens attached to it. The cameras are installed inside a weatherproof enclosure that it is mounted on an outdoor tracker. The tracker updates its pan an tilt every second using a solar position algorithm to maintain the Sun in the center of the IR and VI images. A pyranometer is situated on a horizontal support next to the DAQ system to measure GSI. The dataset, composed of IR images, VI images, GSI measurements, and the Sun's positions, has been tagged with timestamps.
description: arXiv admin note: substantial text overlap with arXiv:2011.12401
Deformation Driven Seq2Seq Longitudinal Tumor and Organs-at-Risk Prediction for Radiotherapy
Creators: name: Lee, Donghoon
name: Alam, Sadegh R
name: Jiang, Jue
name: Zhang, Pengpeng
name: Nadeem, Saad
name: Hu, Yu-Chi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Purpose: Radiotherapy presents unique challenges and clinical requirements for longitudinal tumor and organ-at-risk (OAR) prediction during treatment. The challenges include tumor inflammation/edema and radiation-induced changes in organ geometry, whereas the clinical requirements demand flexibility in input/output sequence timepoints to update the predictions on rolling basis and the grounding of all predictions in relationship to the pre-treatment imaging information for response and toxicity assessment in adaptive radiotherapy. Methods: To deal with the aforementioned challenges and to comply with the clinical requirements, we present a novel 3D sequence-to-sequence model based on Convolution Long Short Term Memory (ConvLSTM) that makes use of series of deformation vector fields (DVF) between individual timepoints and reference pre-treatment/planning CTs to predict future anatomical deformations and changes in gross tumor volume as well as critical OARs. High-quality DVF training data is created by employing hyper-parameter optimization on the subset of the training data with DICE coefficient and mutual information metric. We validated our model on two radiotherapy datasets: a publicly available head-and-neck dataset (28 patients with manually contoured pre-, mid-, and post-treatment CTs), and an internal non-small cell lung cancer dataset (63 patients with manually contoured planning CT and 6 weekly CBCTs). Results: The use of DVF representation and skip connections overcomes the blurring issue of ConvLSTM prediction with the traditional image representation. The mean and standard deviation of DICE for predictions of lung GTV at week 4, 5, and 6 were 0.83$\pm$0.09, 0.82$\pm$0.08, and 0.81$\pm$0.10, respectively, and for post-treatment ipsilateral and contralateral parotids, were 0.81$\pm$0.06 and 0.85$\pm$0.02.
description: Medical Physics 2021, Saad Nadeem and Yu-Chi Hu contributed equally
Structure and properties of fluids near inert and metallic surfaces
Creators: name: Bérard, Daniel Robert
Publisher: name: University of British Columbia
Year: 2009

description: General reductions of the Ornstein-Zernike equation are given for multicomponent molecular fluids near an isolated planar surface and between planar surfaces. This allows integral equation approximations such as the hypernetted-chain (HNC) and reference hypernetted-chain (RHNC) theories to be solved numerically. Theoretical methods for treating multipolar particles near inert, dielectric and metallic surfaces are considered. The metal is represented using a jellium model together with density-functional (DF) theory and the two phases interact electrostatically. Mean-field theories which reduce the many-body electrostatic wall-particle interactions to effective pair potentials are described for dielectric and metallic surfaces. The two interfacial phases are solved self-consistently for the wall-particle distribution function and, in the case of metal surfaces, for the electron density distributions. Explicit results are given for dipolar hard sphere fluids and for electrolyte solutions. The wall-induced fluid “structure”, electrostatic potential drop across the interface and electron density distribution of the metal are discussed in detail. Close to metallic surfaces, it is found that a highly ordered region exists. The dipoles are strongly ordered normal to the surface with the positive ends out. This is because the solvent structure effectively dictates the ion distributions near the surface. Hard sphere, Lennard-Jones and dipolar hard sphere fluids are investigated between inert walls. Lennard-Jones fluids are also considered between attractive walls. RHNC and HNC results for the fluid structure and the force acting between surfaces are compared with computer simulations. With the exception of Lennard-Jones fluids confined between inert walls, it is found that the integral equation theories show good agreement with simulation results. Integral equation and computer simulation results for Lennard-Jones fluids show better agreement as the distance of the state point from liquid-vapour bulk coexistence is increased. A detailed investigation of a Lennard-Jones fluid confined between inert walls using the grand canonical Monte Carlo method is performed. Capillary evaporation is found for liquid subcritical bulk states. General methods are given for simulating a metastable fluid. The force acting between the walls is found to be attractive and increases rapidly as the spinodal separation is approached. On the equilibrium liquid branch, the net pressure appears significantly more attractive than the van der Waals attraction at small separations. This might be the origin of the experimentally measured attraction between hydrophobic surfaces in water.
Interacting Dark Energy with Inhomogeneous Equation of State
Creators: name: Jamil, Mubasher
name: Rashid, Muneer Ahmad
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have investigated the model of dark energy interacting with dark matter by choosing inhomogeneous equations of state for dark energy and a non-linear interaction term for the underlying interaction. The equation of state have dependencies either on the energy densities, redshift, Hubble parameter and its derivatives or the bulk viscosity. We have considered these possibilities and have derived the effective equations of state for the dark energy in each case.
description: 9 pages
CON-quest: Searching for the most obscured galaxy nuclei
Creators: name: Falstad, N.
name: Aalto, S.
name: König, S.
name: Onishi, K.
name: Muller, S.
name: Gorski, M.
name: Sato, M.
name: Stanley, F.
name: Combes, F.
name: González-Alfonso, E.
name: Mangum, J. G.
name: Evans, A. S.
name: Barcos-Muñoz, L.
name: Privon, G. C.
name: Linden, S. T.
name: Díaz-Santos, T.
name: Martín, S.
name: Sakamoto, K.
name: Harada, N.
name: Fuller, G. A.
name: Gallagher, J. S.
name: van der Werf, P. P.
name: Viti, S.
name: Greve, T. R.
name: García-Burillo, S.
name: Henkel, C.
name: Imanishi, M.
name: Izumi, T.
name: Nishimura, Y.
name: Ricci, C.
name: Mühle, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Some luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) host extremely compact and dusty nuclei. The intense infrared radiation arising from warm dust in these sources is prone to excite vibrational levels of molecules such as HCN. This results in emission from the rotational transitions of vibrationally excited HCN (HCN-vib), with the brightest emission found in compact obscured nuclei (CONs). We aim to establish how common CONs are in the local Universe, and whether their prevalence depends on the luminosity or other properties of the host galaxy. We have conducted an Atacama Large Millimeter/submillimeter Array (ALMA) survey of the rotational J=3-2 transition of HCN-vib in a sample of 46 far-infrared luminous galaxies. Compact obscured nuclei are identified in 38 percent of ULIRGs, 21 percent of LIRGs, and 0 percent of lower luminosity galaxies. We find no dependence on the inclination of the host galaxy, but strong evidence of lower IRAS 25 to 60 μm flux density ratios (f25/f60) in CONs compared to the rest of the sample. Furthermore, we find that CONs have stronger silicate features (s9.7μm) but similar PAH equivalent widths (EQW6.2μm) compared to other galaxies. In the local Universe, CONs are primarily found in (U)LIRGs. High resolution continuum observations of the individual nuclei are required to determine if the CON phenomenon is related to the inclinations of the nuclear disks. The lower f25/f60 ratios in CONs as well as the results for the mid-infrared diagnostics investigated are consistent with large dust columns shifting the nuclear radiation to longer wavelengths, making the mid- and far-infrared "photospheres" significantly cooler than the interior regions. To assess the importance of CONs in the context of galaxy evolution, it is necessary to extend this study to higher redshifts where (U)LIRGs are more common.
description: 16 pages, 11 figures, Accepted for publication in Astronomy and Astrophysics
Non-equilibrium dynamics: Studies of reflection of Bose-Einstein condensates
Creators: name: Scott, R. G.
name: Gardiner, C. W.
name: Hutchinson, D. A. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The study of the non-equilibrium dynamics in Bose-Einstein condensed gases has been dominated by the zero-temperature, mean field Gross-Pitaevskii formalism. Motivated by recent experiments on the reflection of condensates from silicon surfaces, we revisit the so-called {\em classical field} description of condensate dynamics, which incorporates the effects of quantum noise and can also be generalized to include thermal effects. The noise is included in a stochastic manner through the initial conditions. We show that the inclusion of such noise is important in the quantitative description of the recent reflection experiments.
Εφαρμογές επαυξημένης πραγματικότητας και η εκπαιδευτική διαδικασία
Creators: name: Κετσιακίδης, Γεώργιος Αριστοτέλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Επαυξημένη πραγματικότητα
Μη γραμμική αφήγηση
Εκπαίδευση
Augmented Reality
Nonlinear storytelling
Education

description: Το θέμα της παρούσης εργασίας είναι η ανάπτυξη μιας τρισδιάστατης διαδραστικής εφαρμογής με την χρήση μη γραμμικής διαδραστικής αφήγησης. Απώτερος στόχος αυτής της εφαρμογής είναι η ανάπτυξή του χωρικού προσανατολισμού για παιδιά δημοτικής εκπαίδευσης. Η ανάπτυξη έγινε σε τέσσερα στάδια την ανάλυση, την σχεδίαση, την υλοποίηση και την αξιολόγηση. Στο στάδιο της ανάλυσης έγιναν εργασίες όπως ανάλυση χρηστών, λειτουργικές απαιτήσεις, χρονοπρογραμματισμός κ.α. Η φάση της σχεδίασης περιλάμβανε εργασίες όπως ο αφηγηματικός σχεδιασμός, πρότυπες οθόνες διεπαφής, σχεδιασμός επιπέδου καθώς και πρότυπα σχέδια γραφικών. Εν συνεχεία, ακολούθησε το στάδιο της υλοποίησης κατά το οποίο πραγματοποιήθηκε η κατασκευή του τρισδιάστατου περιβάλλοντος, η ανάπτυξη κώδικα και η βελτιστοποίηση της εφαρμογής. Τελευταίο στάδιο αποτέλεσε η αξιολόγηση η οποία οδήγησε στην εξαγωγή συμπερασμάτων για την αποδοτικότητα, ευχρηστία, αισθητική και γενικότερη ικανοποίηση των χρηστών. Ένας από τους κύριους στόχους της εργασίας ήταν η χρήση και αξιοποίηση σύγχρονων εργαλείων και μεθοδολογιών, για την παραγωγή όσο το δυνατών πιο ρεαλιστικού περιβάλλοντος. Ακόμη, ιδιαίτερη έμφαση δόθηκε στην αξιολόγηση του εκπαιδευτικού χαρακτήρα της εφαρμογής.
description: The subject of the current work is the development of a 3D interactive application. This application uses tools like and methodologies like nonlinear and interactive storytelling. The goal of this application is to assist children to develop better orientation and navigation skills. The development took place in four stages which are analysis, design, implementation and evaluation. The stage of analysis invokes tasks as user analysis, time schedule etc. The design stage consists of the works of narrative design, mockups, level design and concept art. The implementation stage includes the creation of the 3D environment, code development and optimization. The last stage was the evaluation and data extraction from various methods. One of the main goal of the current work was the use of modern tools and workflows for the production of the best possible realistic results. Finally, a big focus has been done in the evaluation of the educational aspect of the application.
description: Σε συναργασία με: Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Failure in Complex Social Networks
Creators: name: Centola, Damon
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Tolerance against failures and errors is an important feature of many complex networked systems [1,2]. It has been shown that a class of inhomogeneously wired networks called scale-free[1,3] networks can be surprisingly robust to failures, suggesting that socially self-organized systems such as the World-Wide Web, the Internet, and other kinds of social networks [4] may have significant tolerance against failures by virtue of their scale-free degree distribution. I show that this finding only holds on the assumption that the diffusion process supported by the network is a simple one, requiring only a single contact in order for transmission to be successful.
description: 2 pages, 1 figure (3 panels)
Quantum improved charged black holes
Creators: name: Ishibashi, Akihiro
name: Ohta, Nobuyoshi
name: Yamaguchi, Daiki
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider quantum effects of gravitational and electromagnetic fields in spherically symmetric black hole spacetimes in the asymptotic safety scenario. Introducing both the running gravitational and electromagnetic couplings from the renormalization group equations and applying a physically sensible scale identification scheme based on the Kretschmann scalar, we construct a quantum mechanically corrected, or quantum improved Reissner-Nordstrom metric. We study the global structure of the quantum improved geometry and show, in particular, that the central singularity is resolved, being generally replaced with a regular Minkowski-core, where the curvature tensor vanishes. Exploring cases with more general scale identifications, we further find that the space of quantum improved geometries is divided into two regions: one for geometries with a regular Minkowski-core and the other for those with a weak singularity at the center. At the boundary of the two regions, the geometry has either Minkowski-, de Sitter-, or anti-de Sitter(AdS)-core.
description: 19 pages, 6 figures, v2: refs. added
Magic identities for conformal four-point integrals
Creators: name: Drummond, J. M.
name: Henn, J.
name: Smirnov, V. A.
name: Sokatchev, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose an iterative procedure for constructing classes of off-shell four-point conformal integrals which are identical. The proof of the identity is based on the conformal properties of a subintegral common for the whole class. The simplest example are the so-called `triple scalar box' and `tennis court' integrals. In this case we also give an independent proof using the method of Mellin--Barnes representation which can be applied in a similar way for general off-shell Feynman integrals.
description: 13 pages, 12 figures. New proof included with neater discussion of contact terms. Typo corrected
Magnetic quantum ratchet effect in (Cd,Mn)Te- and CdTe-based quantum well structures with a lateral asymmetric superlattice
Creators: name: Faltermeier, Philipp
name: Budkin, G. V.
name: Unverzagt, Jan
name: Hubmann, Stefan
name: Pfaller, A.
name: Belkov, Vassilij
name: Golub, Leonid
name: Ivchenko, Eougenious
name: Adamus, Z.
name: Karczewski, G.
name: Wojtowicz, Tomasz
name: Popov, V. V.
name: Fateev, D. V.
name: Kozlov, D. A.
name: Weiss, Dieter
name: Ganichev, Sergey
Publisher: name: Universität Regensburg
Year: 2017
Subjects: subject: 2-DIMENSIONAL ELECTRON-GAS; BROWNIAN MOTORS; TRANSPORT; HETEROSTRUCTURES; SEMICONDUCTORS; TEMPERATURE; GRAPHENE; ARRAYS;
subject: 530 Physik

description: We report on the observation of magnetic quantum ratchet effect in (Cd, Mn) Te-and CdTe-based quantum well structures with an asymmetric lateral dual grating gate superlattice subjected to an external magnetic field applied normal to the quantum well plane. A dc electric current excited by cw terahertz laser radiation shows 1/B oscillations with an amplitude much larger as compared to the photocurrent at zero magnetic field. We show that the photocurrent is caused by the combined action of a spatially periodic in-plane potential and the spatially modulated radiation due to the near-field effects of light diffraction. Magnitude and direction of the photocurrent are determined by the degree of the lateral asymmetry controlled by the variation of voltages applied to the individual gates. The observed magneto-oscillations with enhanced photocurrent amplitude result from Landau quantization and, for (Cd, Mn) Te at low temperatures, from the exchange enhanced Zeeman splitting in diluted magnetic heterostructures. Theoretical analysis, considering the magnetic quantum ratchet effect in the framework of semiclassical approach, describes quite well the experimental results.
Gravitational Field of Fractal Distribution of Particles
Creators: name: Tarasov, Vasily E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Classical Physics (physics.class-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this paper we consider the gravitational field of fractal distribution of particles. To describe fractal distribution, we use the fractional integrals. The fractional integrals are considered as approximations of integrals on fractals. Using the fractional generalization of the Gauss's law, we consider the simple examples of the fields of homogeneous fractal distribution. The examples of gravitational moments for fractal distribution are considered.
description: 14 pages, LaTeX
Comment on "Preacceleration without radiation: The nonexistence of preradiation phenomenon," by J.A. Heras [Am. J. Phys. 74, 1025 (2006)]
Creators: name: Hnizdo, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: It is argued that a recent claim that there is no radiation in the preacceleration part of a non-runaway solution of the Abraham--Lorentz equation is incorrect.
description: 3 pages, no figures
Response of a ferrofluid to traveling-stripe forcing
Creators: name: Beetz, A.
name: Gollwitzer, C.
name: Richter, R.
name: Rehberg, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We observe the dynamics of waves propagating on the surface of a ferrofluid under the influence of a spatially and temporarily modulated field. In particular, we excite plane waves by a travelling lamellar modulation of the magnetization. By this external driving both the wavelength and the propagation velocity of the waves can be controlled. The amplitude of the excited waves exhibits a resonance phenomenon similar to that of a forced harmonic oscillator. Its analysis reveals the dispersion relation of the free surface waves, from which the critical magnetic field for the onset of the Rosensweig instability can be extrapolated.
Shannon entropy in confined He-like ions within a density functional formalism
Creators: name: Majumdar, Sangita
name: Roy, Amlan K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Shannon entropy in position ($S_{\rvec}$) and momentum ($S_{\pvec}$) spaces, along with their sum ($S_t$) are presented for unit-normalized densities of He, Li$^+$ and Be$^{2+}$ ions, spatially confined at the center of an impenetrable spherical enclosure defined by a radius $r_c$. Both ground as well as some selected low-lying singly excited states, \emph{viz.,} 1sns (n $=$ 2-4) $^3$S, 1snp (n $=$ 2-3) $^3$P, 1s3d $^3$D are considered within a density functional methodology that makes use of a work-function-based exchange potential along with two correlation potentials (local Wigner-type parametrized functional as well as the more involved non-linear gradient- and Laplacian-dependent Lee-Yang-Parr functional). The radial Kohn-Sham (KS) equation is solved using an optimal spatial discretization scheme via the generalized pseudospectral (GPS) method. A detailed systematic analysis of the confined system (relative to corresponding free system) has been performed for these quantities with respect to $r_c$ in tabular and graphical forms, \emph{with and without} electron correlation. Due to compression, the pattern of entropy in aforementioned states gets characterized by various crossovers at intermediate and lower $r_c$ regions. The impact of electron correlation is more pronounced in weaker confinement limit, and appears to decay with rise in confinement strength. The exchange-only results are quite good to provide a decent qualitative discussion. The lower-bounds provided by entropic uncertainty relation holds good in all cases. Several other new interesting features are observed.
Terahertz ratchet effects in graphene with a lateral superlattice
Creators: name: Olbrich, Peter
name: Kamann, Josef
name: König, Matthias
name: Munzert, Jakob
name: Tutsch, Leonard
name: Eroms, Jonathan
name: Weiss, Dieter
name: Liu, Ming-Hao
name: Golub, Leonid
name: Ivchenko, Eougenious
name: Popov, V. V.
name: Fateev, D. V.
name: Mashinsky, K. V.
name: Fromm, F.
name: Seyller, Thomas
name: Ganichev, Sergey
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: FIELD-EFFECT TRANSISTORS; ELECTRONIC TRANSPORT; DEEP IMPURITIES; QUANTUM-WELLS; PHOTODETECTORS; SEMICONDUCTORS; IONIZATION; DEVICES;
subject: 530 Physik

description: Experimental and theoretical studies on ratchet effects in graphene with a lateral superlattice excited by alternating electric fields of terahertz frequency range are presented. A lateral superlattice deposited on top of monolayer graphene is formed either by periodically repeated metal stripes having different widths and spacings or by interdigitated comblike dual-grating-gate (DGG) structures. We show that the ratchet photocurrent excited by terahertz radiation and sensitive to the radiation polarization state can be efficiently controlled by the back gate driving the system through the Dirac point as well as by the lateral asymmetry varied by applying unequal voltages to the DGG subgratings. The ratchet photocurrent includes the Seebeck thermoratchet effect as well as the effects of "linear" and "circular" ratchets, sensitive to the corresponding polarization of the driving electromagnetic force. The experimental data are analyzed for the electronic and plasmonic ratchets taking into account the calculated potential profile and the near field acting on carriers in graphene. We show that the photocurrent generation is based on a combined action of a spatially periodic in-plane potential and the spatially modulated light due to the near-field effects of the light diffraction.
A Quantum Scattering Interferometer
Creators: name: Hart, Russell A.
name: Xu, Xinye
name: Legere, Ronald
name: Gibble, Kurt
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The collision of two ultra-cold atoms results in a quantum-mechanical superposition of two outcomes: each atom continues without scattering and each atom scatters as a spherically outgoing wave with an s-wave phase shift. The magnitude of the s-wave phase shift depends very sensitively on the interaction between the atoms. Quantum scattering and the underlying phase shifts are vitally important in many areas of contemporary atomic physics, including Bose-Einstein condensates, degenerate Fermi gases, frequency shifts in atomic clocks, and magnetically-tuned Feshbach resonances. Precise measurements of quantum scattering phase shifts have not been possible until now because, in scattering experiments, the number of scattered atoms depends on the s-wave phase shifts as well as the atomic density, which cannot be measured precisely. Here we demonstrate a fundamentally new type of scattering experiment that interferometrically detects the quantum scattering phase shifts of individual atoms. By performing an atomic clock measurement using only the scattered part of each atom, we directly and precisely measure the difference of the s-wave phase shifts for the two clock states in a density independent manner. Our method will give the most direct and precise measurements of ultracold atom-atom interactions and will place stringent limits on the time variations of fundamental constants.
description: Corrected formatting and typos
Towards Real-Time Routing Optimization with Deep Reinforcement Learning: Open Challenges
Creators: name: Almasan, Paul
name: Suárez-Varela, José
name: Wu, Bo
name: Xiao, Shihan
name: Barlet-Ros, Pere
name: Cabellos-Aparicio, Albert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The digital transformation is pushing the existing network technologies towards new horizons, enabling new applications (e.g., vehicular networks). As a result, the networking community has seen a noticeable increase in the requirements of emerging network applications. One main open challenge is the need to accommodate control systems to highly dynamic network scenarios. Nowadays, existing network optimization technologies do not meet the needed requirements to effectively operate in real time. Some of them are based on hand-crafted heuristics with limited performance and adaptability, while some technologies use optimizers which are often too time-consuming. Recent advances in Deep Reinforcement Learning (DRL) have shown a dramatic improvement in decision-making and automated control problems. Consequently, DRL represents a promising technique to efficiently solve a variety of relevant network optimization problems, such as online routing. In this paper, we explore the use of state-of-the-art DRL technologies for real-time routing optimization and outline some relevant open challenges to achieve production-ready DRL-based solutions.
description: 6 pages, 4 figures
OA Books Workouts, episode 3. Interview with Miklos Kiss
Creators: name: Open Access Books Network
name: Sondervan, Jeroen
name: Miklos Kiss
Publisher: name: Zenodo
Year: 2022

description: This interview is one of the outputs of the online series OA Books Workouts: Scholars at Work, a project of the Open Access Books Network. The aim of the series is to share good practices regarding the writing, production, and technicalities of publishing an open access book. The Open Access Books Network is an open network for anyone interested in open access books, whether as a researcher, a publisher, a librarian, a student, an infrastructure provider, or a reader. It is free to join and open to all. For more info, look at: https://hcommons.org/groups/open-access-books-network/
Moderne Arbeitswelten in der Neuen Sachlichkeit anhand von Gabriele Tergits: Käsebier erobert den Kurfürstendamm. Das Neue Berlin
Creators: name: Συράκη, Αλεξάνδρα-Ελένη Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Νέα αντικειμενικότητα
Σύγχρονος κόσμος της εργασίας
Gabriele Tergit
New realism
Modern World of work

description: Σκοπός της παρούσας μεταπτυχιακής διατριβής είναι η μελέτη των θεωριών εργασίας του σύγχρονου κόσμου και μέσω ποιου τρόπου θα μπορούσαν να εφαρμοστούν στη Γερμανία στο καλλιτεχνικό ρεύμα της νέας αντικειμενικότητας. Επιπλέον μέσω του βιβλίου της Gabriele Tergit Käsebier erobert den Kurfürstendamm Das Neue Berlin., παρουσιάζεται ο ζωηρός τρόπος της χρυσής εποχής του Βερολίνου σε σύγκριση με την εργασιακή κοινωνία. Το περιεχόμενο του βιβλίου είναι κυρίως βασισμένο, στη διαδραμάτιση γεγονότων ενός συντακτικού τμήματος μιας εφημερίδας στο Βερολίνο, όπου διαπιστώνεται πώς το εργασιακό περιβάλλον και η ζωή των ανθρώπων αλληλεπιδρούν με τη λαμπερή κοινωνία της δεκαετίας του 1920. Το εργασιακό περιβάλλον εκείνης της εποχής προκάλεσε την έναρξη και την ανάπτυξη των σύγχρονων θεωριών εργασίας, οι οποίες κυρίως εξελίχθηκαν μετά τον Β 'Παγκόσμιο Πόλεμο.
description: The purpose of this postgraduate dissertation is to study the working theories of the modern world and how they could be applied at that time of new objectivity in Germany. Furthermore there was a comparison with the work society of the golden age in Berlin, which is presented to us vividly through the book of Gabriele Tergit Käsebier erobert den Kurfürstendamm Das Neue Berlin. The book takes place mainly in an editorial department of a newspaper in Berlin, where we can see how their work environment and their lives interact with the glamorous society of the 1920s. The working environment of the time triggered the development of the modern theories of labour, which mainly developed after the Second World War.