cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Libellula pedemontana Müller 1766
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Libellulidae
Libellula
Libellula pedemontana

description: 15. L. Pedemontana Muell.
Armenien, Caucasus. Diese Art ist durch ganz Europa, den Süden ausgenommen, und Sibirien bis Irkutzk verbreitet.
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 196, DOI: 10.5281/zenodo.3528093
title: Porte-Greffe de Pommier :
title: Principes directeurs pour la conduite de l’examen de la distinction, de l’homogénéité et de la stabilité.
titleType: Subtitle
Creators: name: International Union For The Protection Of New Varieties Of Plants,
Publisher: name: International Union for the Protection of New Varieties of Plants,
Year: 0
Subjects: Group identity.
New Varieties of Plants
Apple Rootstock

description: Ces principes directeurs (“principes directeurs d’examen”) visent à approfondir les principes énoncés dans l’introduction générale (document TG/1/3) et dans les documents TGP qui s’y rapportent afin de donner des indications concrètes détaillées pour l’harmonisation de l’examen de la distinction, de l’homogénéité et de la stabilité (DHS) et, en particulier, à identifier des caractères convenant à l’examen DHS et à la production de descriptions variétales harmonisées.
Libellula sanguinea Müller 1764
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Libellulidae
Libellula
Libellula sanguinea

description: 16. L. sanguinea Muell.
Klein-Asien, Algier, ganz 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 196, DOI: 10.5281/zenodo.3528093
Libellula striolata Charpentier 1840
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Libellulidae
Libellula
Libellula striolata

description: 17 L. striolata Charp.
Cypern, Klein-Asien, ganz Süd- und Mittel-Europa, in Afrika, Egypten und auf Madeira.
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 196, DOI: 10.5281/zenodo.3528093
BO'LAJAK BOSHLANG'ICH SINF O'QITUVCHILARINING O'QUV FAOLIYATINI RIVOJLANTIRISH
Creators: name: Abdiyazova, Sarvinoz
Publisher: name: Zenodo
Year: 2024

description: Ushbu tezisda bo'lajak boshlang'ich sinf o'qituvchilarining o'quv faoliyatini rivojlantirish jarayonlari tahlil qilinadi. Maqolada ta'lim jarayonida o'qituvchilar uchun yangi pedagogik yondashuvlar, usullar va strategiyalar, shuningdek, o'quv faoliyatini samarali tashkil etishning ahamiyati muhokama qilinadi. O'qituvchilarning o'quv faoliyatini rivojlantirish uchun zarur bo'lgan kompetensiyalar va kasbiy malakalar, shuningdek, o'quvchilar bilan interaktiv aloqalar o'rnatishning muhimligi ta'kidlanadi. O'qituvchilarning professional o'sishini qo'llab-quvvatlash va ularni zamonaviy ta'lim talablariga mos ravishda tayyorlash uchun takliflar beriladi.
A numerical jet model for the prompt emission of gamma-ray bursts
Creators: name: Farinelli, Ruben
name: Basak, Rupal
name: Amati, Lorenzo
name: Guidorzi, Cristiano
name: Frontera, Filippo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma-ray bursts (GRBs) are known to be highly collimated events, and are mostly detectable when they are seen on-axis or very nearly on-axis. However, GRBs can be seen from off-axis angles, and the recent detection of a short GRB associated to a gravitational wave event has conclusively shown such a scenario. The observer viewing angle plays an important role in the observable spectral shape and the energetic of such events. We present a numerical model which is based on the single-pulse approximation with emission from a top-hat jet and has been developed to investigate the effects of the observer viewing angle. We assume a conical jet parametrized by a radius $R_{\rm jet}$, half-opening angle $θ_{\rm jet}$, a comoving-frame emissivity law and an observer viewing angle $θ_{\rm obs}$, and then study the effects for the conditions $θ_{\rm obs} < θ_{\rm jet}$ and $θ_{\rm obs} >θ_{\rm jet}$. We present results considering a smoothly broken power-law emissivity law in jet comoving frame, albeit the model implementation easily allows to consider other emissivity laws. We find that the relation $E^{\rm i}_{\rm p} \propto E_{\rm iso}^{0.5}$ (Amati relation) is naturally obtained from pure relativistic kinematic when $Γ\gtrsim 10$ and $θ_{\rm obs} < θ_{\rm jet}$; on the contrary, when $θ_{\rm obs} > θ_{\rm jet}$ it results $E^{\rm i}_{\rm p} \propto E_{\rm iso}^{0.25}$. Using data from literature for a class of well-know sub-energetic GRBs, we show that their position in the $E^{\rm i}_{\rm p}-E_{\rm iso}$ plane is consistent with event observed off-axis. The presented model is developed as a module to be integrated in spectral fitting software package XSPEC and can be used by the scientific community.
description: 11 pages, 8 figures, accepted for publication in MNRAS
Spurs and feathering in spiral galaxies
Creators: name: Dobbs, C. L.
name: Bonnell, I. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Smoothed Particle Hydrodynamics (SPH) simulations of the response of gas discs to a spiral potential. These simulations show that the commonly observed spurs and feathering in spiral galaxies can be understood as being due to structures present in the spiral arms that are sheared by the divergent orbits in a spiral potential. Thus, dense molecular cloud-like structures generate the perpendicular spurs as they leave the spiral arms. Subsequent feathering occurs as spurs are further sheared into weaker parallel structures as they approach the next spiral passage. Self-gravity of the gas is not included in these simulations, stressing that these features are purely due to the hydrodynamics in spiral shocks. Instead, a necessary condition for this mechanism to work is that the gas need be relatively cold (1000 K or less) in order that the shock is sufficient to generate structure in the spiral arms, and such structure is not subsequently smoothed by the gas pressure.
description: 6 pages, 6 figures, accepted for publication in MNRAS
Inserting two atoms into a single optical micropotential
Creators: name: Miroshnychenko, Y.
name: Alt, W.
name: Dotsenko, I.
name: Foerster, L.
name: Khudaverdyan, M.
name: Meschede, D.
name: Reick, S.
name: Rauschenbeutel, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We recently demonstrated that strings of trapped atoms inside a standing wave optical dipole trap can be rearranged using optical tweezers [Y. Miroshnychenko et al., Nature, in press (2006)]. This technique allows us to actively set the interatomic separations on the scale of the individual trapping potential wells. Here, we use such a distance-control operation to insert two atoms into the same potential well. The detected success rate of this manipulation is 16(+4/-3) %, in agreement with the predictions of a theoretical model based on our independently determined experimental parameters.
description: 4 pages, 4 figures
Observation of Wigner crystal of electrons in a monolayer semiconductor
Creators: name: Smoleński, T.
name: Dolgirev, P. E.
name: Kuhlenkamp, C.
name: Popert, A.
name: Shimazaki, Y.
name: Back, P.
name: Kroner, M.
name: Watanabe, K.
name: Taniguchi, T.
name: Esterlis, I.
name: Demler, E.
name: Imamoğlu, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: When the Coulomb repulsion between electrons dominates over their kinetic energy, electrons in two dimensional systems were predicted to spontaneously break continuous translation symmetry and form a quantum crystal. Efforts to observe this elusive state of matter, termed a Wigner crystal (WC), in two dimensional extended systems have primarily focused on electrons confined to a single Landau level at high magnetic fields, but have not provided a conclusive experimental signature of the emerging charge order. Here, we use optical spectroscopy to demonstrate that electrons in a pristine monolayer semiconductor with density $ \lesssim 3 \cdot 10^{11}$ cm$^{-2}$ form a WC. The interactions between resonantly injected excitons and electrons arranged in a periodic lattice modify the exciton band structure so that it exhibits a new umklapp resonance, heralding the presence of charge order. Remarkably, the combination of a relatively high electron mass and reduced dielectric screening allows us to observe an electronic WC state even in the absence of magnetic field. The tentative phase diagram obtained from our Hartree-Fock calculations provides an explanation of the striking experimental signatures obtained up to $B = 16$ T. Our findings demonstrate that charge-tunable transition metal dichalcogenide (TMD) monolayers enable the investigation of previously uncharted territory for many-body physics where interaction energy dominates over kinetic energy, even in the absence of a moire potential or external fields.
description: Main text: 7 pages, 4 figures; Supplementary Information: 19 pages, 15 figures
Λογιστική διαδικασία και επιχειρηματική ευφϊα σε λογισμικό ERP σε ελληνικές επιχειρήσεις και οργανισμούς:
Creators: name: Αγγέλη, Μαρία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Λογιστικά Πληροφοριακά Συστήματα (ΛΠΣ)
Επιχειρηματική Ευφυϊα
Συστήματα Διαχείρισης Επιχειρησιακών Πόρων
Accounting Information Systems (AIS)
Business Intelligence
Enterprise Recourse Planning

description: Σκοπός της διατριβής ήταν η ανάλυση των Λογιστικών Πληροφοριακών Συστημάτων στα οποία έχουν ενσωματωθεί και Συστήματα Επιχειρηματικής Ευφυΐας, αξιολογώντας τις αλλαγές που επιφέρουν στην οργάνωση και τη διοίκηση των σύγχρονων επιχειρήσεων, και η εξέταση, σε μεγαλύτερο βάθος, των συστημάτων αυτών στην ελληνική πραγματικότητα. Πιο συγκεκριμένα, αναφερόμαστε στη λογιστική διαδικασία μέσα από τα ERP συστήματα και στις λειτουργίες που αυτά παρέχουν. Βασική μας μέριμνα ήταν η παρουσίαση της νέας τεχνολογίας όσον αφορά τη λογιστική διαδικασία και η επίδρασή της στο ευρύτερο επιχειρησιακό περιβάλλον. Αρχικά, παρουσιάσαμε διάφορες έρευνες σε Ελλάδα και εξωτερικό. Ακολούθησε μία σύντομη παρουσίαση των ΛΠΣ, της δομής τους και των χαρακτηριστικών τους. Ανάλογη βαρύτητα δόθηκε στην παρουσίαση των αποτελεσμάτων της έρευνας με βάση το ερωτηματολόγιο που αποστάλθηκε.
description: The aim of the present thesis was the study of Accounting Information Systems in which Business Intelligence Systems are integrated to, evaluating the changes they create to the organization and administration of modern businesses, and the broader examination of those systems to the Greek reality. More specifically, we make reference to the accounting procedure through ERP systems and to the functions they provide. Our basic concern is the presentation of the new technology relevant with the accounting procedure and its influence to the wider business environment. Originally, we presented various researches in Greece and abroad. We continue with a brief presentation of the Accounting Information Systems, their structure and their features. The same importance is given to the presentation of the results based to the questionnaire that was sent.
On the BPS spectrum of 5d SU(2) super-Yang-Mills
Creators: name: Longhi, Pietro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We provide a closed-form expression for the motivic Kontsevich-Soibelman invariant for M-theory in the background of the toric Calabi-Yau threefold $K_{\mathbb{F}_0}$. This encodes the refined BPS spectrum of $SU(2)$ 5d ${\cal N}=1$ Yang-Mills theory on $S^1\times \mathbb{R}^4$, corresponding to rank-zero Donaldson-Thomas invariants for $K_{\mathbb{F}_0}$, anywhere on the Coulomb branch.
description: 8 pages; v2 some updates due to an implicit assumption; v3 added appendix with proof of assumption, and some clarifications
Πρωτότυπο σύστημα βιο-ανάδρασης
Creators: name: Κομνίδης, Αντώνης Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Βιοανάδραση
Οσφρησιόμετρο
Νευροανάδραση
Biofeedback
Olfactometer
Neurofeedback

description: Σκοπός της εργασίας ήταν ο σχεδιασμός και η ανάπτυξη ενός πρωτότυπου συστήματος βιοανάδρασης. Η πρωτοτυπία του έγκειται στην χρησιμοποίηση οσφρητικών ερεθισμάτων ως μονοπάτι για την ανάδραση. Έγινε μια προσπάθεια να δοθεί το απαιτούμενο ιατρικό γνωστικό υπόβαθρο, ιδιαίτερα όσον αφορά το νευρικό σύστημα και την αίσθηση της όσφρησης, αλλά και όσον αφορά τις τεχνικές της βιοανάδρασης και που χρησιμοποιούνται αυτές. Αναφέρθηκαν οι γενικές αρχές λειτουργίας των οσφρησιόμετρων, και αναλύθηκε η λειτουργία του προτεινόμενου συστήματος. Παρουσιάστηκαν οι μέθοδοι πιστοποίησης της καλής λειτουργίας του συστήματος, και εκτέθηκαν τα αποτελέσματα των ελέγχων αυτών. Τέλος, έγινε μια αναφορά για τις τυχόν βελτιώσεις ή την μελλοντική εργασία σε σχέση με το σύστημα που παρουσιάστηκε
description: The aim of the present thesis was to design and develop a prototype biofeedback system. The novelty of this system lies in using olfactory stimuli as the path for feedback. There was an attempt to provide the required medical knowledge base, particularly in the nervous system and the sense of smell, but also in terms of biofeedback techniques and the areas of biofeedback implementation. The general operating principles of olfactometers were reported and the function of the proposed system was analyzed. The methods for certifying the proper operation of the system were presented, and highlighted the results of such tests. Finally, there was a reference to any improvements or future work in relation to the system presented.
Large deviations for the largest eigenvalue of rank one deformations of Gaussian ensembles
Creators: name: Maïda, Mylène
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F10 (15A52)

description: We establish a large deviation principle for the largest eigenvalue of a rank one deformation of a matrix from the GUE or GOE. As a corollary, we get another proof of the phenomenon, well-known in learning theory and finance, that the largest eigenvalue separates from the bulk if the perturbation is large enough. A large part of the paper is devoted to an auxiliary result on the continuity of spherical integrals, in the case when one of the matrix is of rank one, as studied in a previous work.
description: 14 pages, new version with typos corrected in Theorem 3.2 and a new proof for Lemma 2.3. Many thanks to B. McKenna for pointing a mistake in the previous proof and proposing a more robust strategy through Lemma 2.5
On sumfree subsets of hypercubes
Creators: name: Katz, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B75

description: We consider the possible sizes of large sumfree sets contained in the discrete hypercube $\{1,...,n\}^k$, and we determine upper and lower bounds for the maximal size as $n$ becomes large. We also discuss a continuous analogue in which our lower bound remains valid and our upper bound can be strengthened, and we consider the generalization of both problems to $l$-fold-sumfree sets.
description: 18 pages, 4 figures; lower bound result corrected
Trapped Resonant Fermions above Superfluid Transition Temperature
Creators: name: Cheng, Chi-Ho
name: Yip, Sung-Kit
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate trapped resonant fermions with unequal populations within the local density approximation above the superfluid transition temperature. By tuning the attractive interaction between fermions via Feshbach resonance, the system evolves from weakly interacting fermi gas to strongly interacting fermi gas, and finally becomes bose-fermi mixture. The density profiles of fermions are examined and compared with experiments. We also point out the simple relationships between the local density, the axial density, and the gas pressure within the local density approximation.
description: 9 pages, 4 figures
Exploring the infrared structure of QCD with the Gribov-Zwanziger Lagrangian
Creators: name: Gracey, J. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review recent one and two loop MSbar Landau gauge calculations using the Gribov-Zwanziger Lagrangian. The behaviour of the gluon and Faddeev-Popov ghost propagators as well as the renormalization group invariant effective coupling constant is examined in the infrared limit.
description: 6 latex pages, talk presented at IRQCD in Rio
Επίδραση των αιθέριων ελαίων στην ευφλεκτικότητα των βελονών τραχείας πεύκης:
Creators: name: Θεοδωρίδου, Χριστίνα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Αιθέρια έλαια
Ευφλεκτικότητα καύσιμης ύλης
Οργανικές πτητικές ουσίες
Essential oils
Fuel flammability
Volatile organic compounds (VOC)

description: Σκοπός της παρούσης εργασίας είναι η μελέτη και η σύγκριση της ευφλεκτικότητας βελονών τραχείας πεύκης (Pinus brutia Ten)που περιέχουν αιθέρια έλαια και βελονών του ίδιου είδους από τις οποίες έχουν αφαιρεθεί τα αιθέρια έλαια. Ως κριτήρια ευφλεκτικότητας ορίστηκαν η θερμοκρασία και ο χρόνος ανάφλεξης των βελονών με θέρμανση δι'ακτινοβολίας και με παρουσία πιλοτικής φλόγας. Τον Μάρτιο του 2009 συλλέχθηκαν ώριμες βελόνες από πέντε δέντρα τραχείας πεύκης. Στην συνέχεια πραγαματοποιήθηκε απόσταξη στη μισή ποσότητα του συνολικού δείγματος για την δημιουργία πευκοβελόνων χωρίς αιθέρια έλαια. Κατόπιν οι βελόνες αφέθηκαν στο εργαστήριο για περίπου ένα μήνα ώστε να επιτευχθεί φυσική ξήρανση. Υπολογίστηκε το ποσοστό της περιεχόμενης υγρασίας και τέλος πραγματοποίθηκαν πειράματα ευφλεκτικότητας τόσο στις βελόνες που περιέχουν αιθέρια έλαια όσο και στις βελόνες από τις οποίες έχουν αφαιρεθεί τα αιθέρια έλαια. Για να διαπιστωθεί αν οι παρατηρούμενες διαφορές στους μέσους όρους των δύο περιπτώσεων είναι στατιστικά σημαντικές διενεργήθηκε έλεγχος t (t-test) σε επίπεδο στατιστικής σημαντικότητας p=0,05.
description: The purpose of this study is to investigate and compare the flammability of pine needles (Pinus brutia Ten.) containing essential oils and needles of the same species from which the essential oils have been removed. The time - to - ignition and the ignition temperature of needles after heating with irradiation in the presence of pilot flame have been set as flammability criteria. Mature needles were collected from five pine trees. Distillation was performed on half of the total sample for the recovery of pine needles without essential oils. Consequently the needles were left in the laboratory for about a month for natural drying. Flammability tests were performed on both needles containing essential oils and needles without essential oils. The average ignition time for the needles with essential oils was 13.2 s. while for the needles without essential oils 20.5 s. The difference was statistically significant (p = 0,05). The average ignition temperature for the needles with essential oils was 253.6oC while for the needles without essential oils 254.26oC. The difference is not statistically significant (p = 0,05). The study of the role of essential oils on forest fuels flammability and other forest species can lead to useful conclusions in the analysis of the various that determine forest fuel flammability.
Weak units and homotopy 3-types
Creators: name: Joyal, André
name: Kock, Joachim
Publisher: name: arXiv
Year: 2006
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 18D05; 18D10; 55P99

description: We show that every braided monoidal category arises as $\End(I)$ for a weak unit $I$ in an otherwise completely strict monoidal 2-category. This implies a version of Simpson's weak-unit conjecture in dimension 3, namely that one-object 3-groupoids that are strict in all respects, except that the object has only weak identity arrows, can model all connected, simply connected homotopy 3-types. The proof has a clear intuitive content and relies on a geometrical argument with string diagrams and configuration spaces.
description: Dedicated to Ross Street on his 60th birthday; to appear in the StreetFest proceedings. 20 pages, LaTeX; uses Paul Taylor's diagrams and Peter Kabal's texdraw; does not compile with pdflatex. Version v2: reformatted to fit also on letter paper. Version v3: expository improvements, final version
Libellula flavistyla Rambur 1842
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Libellulidae
Libellula
Libellula flavistyla

description: 18.  L. ﬂavistyla  Rbr.,
 L. morio Schneid. Klein-Asien. In Afrika, Egypten, Algier, am Senegal.
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 196, DOI: 10.5281/zenodo.3528093
Gomphus vulgatissimus Linnaeus 1758
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Gomphidae
Gomphus
Gomphus vulgatissimus

description: 19. Gomphus vulgatissimus L.,
 G. Schneiderii Selys. Klein- Asien, (Kellemisch), Trapezunt, Caucasus. In ganz Europa, mit Ausnahme des äussersten Südens.
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 196, DOI: 10.5281/zenodo.3528093
Spontaneously Induced Gravity: From Rippled Dark Matter to Einstein Corpuscles
Creators: name: Davidson, Aharon
name: Gurwich, Ilya
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Suppose General Relativity, provocatively governed by a dimensional coupling constant, is a spontaneously induced theory of Gravity. Invoking Zee's mechanism, we represent the reciprocal Newton constant by a Brans Dicke scalar field, and let it damped oscillating towards its General Relativistic VEV. The corresponding cosmological evolution, in the Jordan frame, averagely resembles the familiar dark radiation -> dark matter -> dark energy domination sequence. The fingerprints of the theory are fine ripples, hopefully testable, in the FRW scale factor; they die away at the strict General Relativity limit. Also derived is the spherically symmetric static configuration associated with spontaneously induced General Relativity. At the stiff scalar potential limit, the exterior Schwarzschild solution is recovered. However, due to level crossing at the would have been horizon, it now connects with a novel dark core characterized by a locally varying Newton constant. The theory further predicts light Einstein-style gravitational corpuscles (elementary particles?) which become point-like at the GR-limit.
description: Talks given at the Einstein Century International Conference (Paris, July 18-22, 2005), and at the International Europhysics Conference on High Energy Physics (Lisboa, July 21-27, 2005)
Thermodynamic Properties of Spherically-Symmetric, Uniformly-Accelerated Reference Frames
Creators: name: Huang, Chao-Guang
name: Sun, Jia-Rui
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We aim to study the thermodynamic properties of the spherically symmetric reference frames with uniform acceleration, including the spherically symmetric generalization of Rindler reference frame and the new kind of uniformly accelerated reference frame. We find that, unlike the general studies about the horizon thermodynamics, one cannot obtain the laws of thermodynamics for their horizons in the usual approaches, despite that one can formally define an area entropy (Bekenstein-Hawking entropy). In fact, the common horizon for a set of uniformly accelerated observers is not always exist, even though the Hawking-Unruh temperature is still well-defined. This result indicates that the Hawking-Unruh temperature is only a kinematic effect, to gain the laws of thermodynamics for the horizon, one needs the help of dynamics. Our result is in accordance with those from the various studies about the acoustic black holes.
description: 8 pages
The breaking of quantum double symmetries by defect condensation
Creators: name: Bais, F. A.
name: Mathy, C. J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper, we study the phenomenon of Hopf or more specifically quantum double symmetry breaking. We devise a criterion for this type of symmetry breaking which is more general than the one existing in the literature, and therefore extends the number of possible breaking patterns that can be described consistently. We start by recalling why the extended symmetry notion of quantum double algebras is an optimal tool when analyzing a wide variety of two dimensional physical systems including quantum fluids, crystals and liquid crystals. The power of this approach stems from the fact that one may characterize both ordinary and topological modes as representations of a single (generally non-Abelian) Hopf symmetry. In principle a full classification of defect mediated as well as ordinary symmetry breaking patterns and subsequent confinement phenomena can be given. The formalism applies equally well to systems exhibiting global, local, internal and/or external (i.e. spatial) symmetries. The subtle differences in interpretation for the various situations are pointed out. We show that the Hopf symmetry breaking formalism reproduces the known results for ordinary (electric) condensates, and we derive formulae for defect (magnetic) condensates which also involve the phenomenon of symmetry restoration. These results are applied in two papers which will be published in parallel.
description: 65 pages, 7 figures, correction in table 3, updated references
A node deployment model with variable transmission distance for wireless sensor networks
Creators: name: Tiegang, Fan
name: Junmin, Chen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The deployment of network nodes is essential to ensure the wireless sensor network's regular operation and affects the multiple network performance metrics, such as connectivity, coverage, lifetime, and cost. This paper focuses on the problem of minimizing network costs while meeting network requirements, and proposes a corona-based deployment method by using the variable transmission distance sensor. Based on the analysis of node energy consumption and network cost, an optimization model to minimize Cost Per Unit Area is given. The transmission distances and initial energy of the sensors are obtained by solving the model. The optimization model is improved to ensure the energy consumption balance of nodes in the same corona. Based on these parameters, the process of network node deployment is given. Deploying the network through this method will greatly reduce network costs.
Classical R-Operators and Integrable Generalizations of Thirring Equations
Creators: name: Skrypnyk, Taras V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct different integrable generalizations of the massive Thirring equations corresponding loop algebras $\widetilde{\mathfrak{g}}^σ$ in different gradings and associated ''triangular'' $R$-operators. We consider the most interesting cases connected with the Coxeter automorphisms, second order automorphisms and with ''Kostant-Adler-Symes'' $R$-operators. We recover a known matrix generalization of the complex Thirring equations as a partial case of our construction.
description: This is a contribution to the Proc. of the Seventh International Conference ''Symmetry in Nonlinear Mathematical Physics'' (June 24-30, 2007, Kyiv, Ukraine), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Διαχείρηση Υδρολογικής λεκάνης Αλιάκμονα. Υδατικό ισοζύγιο:
Creators: name: Γκράνα, Δήμητρα Αλεξάνδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Αλιάκμονας
Υδρολογική λεκάνη
Υδατικό ισοζύγιο
Aliakmonas
Drainage Basin
Hydrological cycle

description: Σκοπός της παρούσας Μεταπτυχιακής Διπλωματικής Εργασίας είναι η διαχείριση της υδρολογικής λεκάνης του ποταμού Αλιάκμονα, η οποία βασίζεται κυρίως στη συλλογή και επεξεργασία των μετεωρολογικών δεδομένων της λεκάνης απορροής και στη λεπτομερή εκτίμηση των παραμέτρων του υδατικού ισοζυγίου. Η εκτίμηση των παραμέτρων του υδατικού ισοζυγίου θα επιτρέπει την εξαγωγή συμπερασμάτων σχετικά με τις ποσότητες νερού που απορρέουν επιφανειακά, κατεισδύουν ενισχύοντας τους υδροφόρους ορίζοντες καθώς και την ποσότητα των ατμοσφαιρικών κατακρημνισμάτων που χάνεται λόγω του φαινομένου της εξατμισοδιαπνοής. Για την ανάλυση του υδατικού ισοζυγίου, οι υδρολογικές παράμετροι υπολογίστηκαν με μεθοδολογίες, οι οποίες κρίνονται σε κάθε περίπτωση οι πιο αξιόπιστες. Η εκτίμηση των παραμέτρων του υδατικού ισοζυγίου για την λεκάνη απορροής του ποταμού Αλιάκμονα, έδειξε ότι δέχεται ετησίως συνολικό όγκο νερού που ανέρχεται σε 3274,98 106 m3. Η ποσότητα του νερού, που χάνεται λόγω του φαινομένου της εξατμισοδιαπνοής είναι 2564,36 106 m3, ενώ ποσότητα 125,40 106 m3 κατεισδύει μέσω των γεωλογικών σχηματισμών εμπλουτίζοντας τους υδροφόρους ορίζοντες της περιοχής.
description: The aim of this Postgraduate Diplomatic Work is to estimate the hydrological cycle analysis for the Aliakmonas river drainage basin, which is located in the eastern part of Macedonia. The river basin was divided into 12 subasins. Based on the equation of the hydrological cycle, an attempt was made to calculate the hydrological parameters for Aliakmonas river. The climate of the study area was investigated using precipitation and air temperature data collected from a few meteorological stations around the basin The data are related to the interval 1980-2001. For the water cycle analysis, all hydrological parameters were calculated using methodologies, which were considered to be the most reliable. The hydrological cycle analysis of the drainage basin of Aliakmonas river showed that the area receives annually 3274,98 106 m3 of precipitated water. A part of that, which reaches 2564,36 106 m3 is lost due to evaporation and transpiration processes while an amount of 125,40 106 m3 penetrates through geological formations, increasing the amounts of underground water.
Gomphus forcipatus Linnaeus 1758
Creators: name: Hagen, H.
Publisher: name: Zenodo
Year: 1863
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Gomphidae
Gomphus
Gomphus forcipatus

description: 20. G. forcipatus L.
Brussa, Trapezunt, Caucasus. In ganz Europa, in Afrika in Algier und 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 196, DOI: 10.5281/zenodo.3528093
Performance of PHENIX HBD in Au+Au central collisions
Creators: name: Watanabe, Yosuke
Publisher: name: Zenodo
Year: 2011
Subjects: phenix
rhic
hbd

description: The electron decay branching ratios of light vector mesons are very small(~10-4), while there are many background electrons mainly originating from π0 Dalitz decays and γ conversions. A Hadron Blind Detector(HBD) has been installed into PHENIX to reject such background electrons
N-polar GaN/AlN resonant tunneling diodes
Creators: name: Cho, YongJin
name: Encomendero, Jimy
name: Ho, Shao-Ting
name: Xing, Huili Grace
name: Jena, Debdeep
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: N-polar GaN/AlN resonant tunneling diodes are realized on single-crystal N-polar GaN bulk substrate by plasma-assisted molecular beam epitaxy growth. The room-temperature current-voltage characteristics reveal a negative differential conductance (NDC) region with a peak tunneling current of 6.8$\pm$ 0.8 kA/cm$^2$ at a forward bias of ~8 V. Under reverse bias, the polarization-induced threshold voltage is measured at ~$-$4 V. These resonant and threshold voltages are well explained with the polarization field which is opposite to that of the metal-polar counterpart, confirming the N-polarity of the RTDs. When the device is biased in the NDC-region, electronic oscillations are generated in the external circuit, attesting to the robustness of the resonant tunneling phenomenon. In contrast to metal-polar RTDs, N-polar structures have the emitter on the top of the resonant tunneling cavity. As a consequence, this device architecture opens up the possibility of seamlessly interfacing$-$via resonant tunneling injection$-$a wide range of exotic materials with III-nitride semiconductors, providing a route to explore new device physics.
description: 12 pages, 3 figures
3-Branes on Eguchi-Hanson 6D Instantons
Creators: name: Singh, Harvendra
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the approach used by Eguchi-Hanson in constructing four-dimensional instanton metrics and construct a class of regular six-dimensional instantons which are nothing but $S^2\times S^2$ resolved conifolds. We then also obtain D3-brane solutions on these EH-resolved conifolds.
description: 9pages
The VVDS-VLA Deep Field: III. GMRT observations at 610 MHz and the radio spectral index properties of the sub-mJy population
Creators: name: Bondi, M.
name: Ciliegi, P.
name: Venturi, T.
name: Dallacasa, D.
name: Bardelli, S.
name: Zucca, E.
name: Athreya, R. M.
name: Gregorini, L.
name: Zanichelli, A.
name: Fevre, O. Le
name: Contini, T.
name: Garilli, B.
name: Iovino, A.
name: Temporin, S.
name: Vergani, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the low frequency (610 MHz) radio source counts of the VVDS-VLA field and investigate the radio spectral index properties of the sub-mJy population. We use new deep (r.m.s.$\simeq 50$ $μ$Jy/beam) observations of the VVDS-VLA field obtained at 610 MHz with the GMRT and matched in resolution (6 arcsec) with already available VLA data at 1.4 GHz on the same field. We find evidence of a change of the dominant population of radio sources below 0.5 mJy (at 1.4 GHz): between 0.15 and 0.5 mJy the median spectral index is significantly flatter ($α=-0.46\pm 0.03$) than that of brighter sources ($α=-0.67\pm 0.05$). A relevant contribution below 0.5 mJy from a population of flat spectrum low luminosity compact AGNs and radio quiet QSOs could explain this effect. At even fainter flux density, between 0.10 and 0.15 mJy at 1.4 GHz, the median spectral index steepens again ($α=-0.61\pm 0.04$) suggesting that the contribution of starburst galaxies becomes important below $\sim 0.2$ mJy. Finally we present a sample of 58 candidate ultra-steep sources with radio flux density from one to two orders of magnitude lower than any other sample of such objects.
description: Accepted for publication in Astronomy & Astrophysics
Swift and infra-red observations of the blazar 3C~454.3 during the giant X-ray flare of May 2005
Creators: name: Giommi, P.
name: Blustin, A. J.
name: Capalbi, M.
name: Colafrancesco, S.
name: Cucchiara, A.
name: Fuhrmann, L.
name: Krimm, H. A.
name: Marchili, N.
name: Massaro, E.
name: Perri, M.
name: Tagliaferri, G.
name: Tosti, G.
name: Tramacere, A.
name: Burrows, D. N.
name: Chincarini, G.
name: Falcone, A.
name: Gehrels, N.
name: Kennea, J.
name: Sambruna, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a series of Swift and quasi simultaneous ground-based infra-red observations of the blazar 3C 454.3 carried out in April-May 2005 when the source was 10 to 30 times brighter than previously observed. We found 3C 454.3 to be very bright and variable at all frequencies covered by our instrumentation. The broad-band Spectral Energy Distribution (SED) shows the usual two-bump shape (in nu-nu f(nu) space) with the Infra-red, optical and UV data sampling the declining part of the synchrotron emission that, even during this extremely large outburst, had its maximum in the far-infrared. The X-ray spectral data from the XRT and BAT instruments are flat and due to inverse Compton emission. The remarkable SED observed implies that at the time of the Swift pointings 3C 454.3 was one of the brightest objects in the extragalactic sky with a gamma-ray emission similar or brighter than that of 3C 279 when observed in a high state by EGRET. Time variability in the optical-UV flux is very different from that in the X-ray data: while the first component varied by about a factor two within a single exposure, but remained approximately constant between different observations, the inverse Compton component did not vary on short time-scales but changed by more than a factor of 3 between observations separated by a few days. This different dynamical behaviour illustrates the need to collect simultaneous multi-frequency data over a wide range of time-scales to fully constrain physical parameters in blazars.
description: 7 pages, 4 figures, accepted for publication in A&A
Seeded growth of high-quality transition metal dichalcogenide single crystals via chemical vapor transport
Creators: name: Li, Hao
name: Liu, Junku
name: Guo, Nan
name: Xiao, Lin
name: Zhang, Haoxiong
name: Zhou, Shuyun
name: Wu, Yang
name: Fan, Shoushan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Transition metal dichalcogenides (TMDs) are van der Waals layered materials with sizable and tunable bandgaps, offering promising platforms for two-dimensional electronics and optoelectronics. To this end, the bottleneck is how to acquire high-quality single crystals in a facile and efficient manner. As one of the most widely employed method of single-crystal growth, conventional chemical vapor transport (CVT) generally encountered problems including the excess nucleation that leads to small crystal clusters and slow growth rate. To address these issues, a seed crystal is introduced to suppress the nucleation and an inner tube is adopted as both a separator and a flow restrictor, favoring the growth of large-size and high-quality TMD single crystals successfully. Three examples are presented, the effective growth of millimeter-sized MoSe2 and MoTe2 single crystals, and the greatly shortened growth period for PtSe2 single crystal, all of which are synthesized in high quality according to detailed characterizations. The mechanism of seeded CVT is discussed. Furthermore, a phototransistor based on exfoliated multi-layered MoSe2 displays excellent photoresponse in ambient conditions, and considerably rapid rise and fall time of 110 and 125 us are obtained. This work paves the way for developing a facile and versatile method to synthesize high-quality TMD single crystals in laboratory, which could serve as favorable functional materials for potential low-dimensional optoelectronics.
Infrared-suppressed gluon propagator in 4d Yang-Mills theory in a Landau-like gauge
Creators: name: Cucchieri, Attilio
name: Maas, Axel
name: Mendes, Tereza
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The infrared behavior of the gluon propagator is directly related to confinement in QCD. Indeed, the Gribov-Zwanziger scenario of confinement predicts an infrared vanishing (transverse) gluon propagator in Landau-like gauges, implying violation of reflection positivity and gluon confinement. Finite-volume effects make it very difficult to observe (in the minimal Landau gauge) an infrared suppressed gluon propagator in lattice simulations of the four-dimensional case. Here we report results for the SU(2) gluon propagator in a gauge that interpolates between the minimal Landau gauge (for gauge parameter lambda equal to 1) and the minimal Coulomb gauge (corresponding to lambda = 0). For small values of lambda we find that the spatially-transverse gluon propagator D^tr(0,|\vec p|), considered as a function of the spatial momenta |\vec p|, is clearly infrared suppressed. This result is in agreement with the Gribov-Zwanziger scenario and with previous numerical results in the minimal Coulomb gauge. We also discuss the nature of the limit lambda -> 0 (complete Coulomb gauge) and its relation to the standard Coulomb gauge (lambda = 0). Our findings are corroborated by similar results in the three-dimensional case, where the infrared suppression is observed for all considered values of lambda.
description: 5 pages, 2 figures, one figure with additional results and extended discussion of some aspects of the results added and some minor clarifications. In v3: Various small changes and additions
Structural transitions and arrest of domain growth in sheared binary immiscible fluids and microemulsions
Creators: name: Harting, Jens
name: Giupponi, Giovanni
name: Coveney, Peter V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate spinodal decomposition and structuring effects in binary immiscible and ternary amphiphilic fluid mixtures under shear by means of three dimensional lattice Boltzmann simulations. We show that the growth of individual fluid domains can be arrested by adding surfactant to the system, thus forming a bicontinous microemulsion. We demonstrate that the maximum domain size and the time of arrest depend linearly on the concentration of amphiphile molecules. In addition, we find that for a well defined threshold value of amphiphile concentration, the maximum domain size and time of complete arrest do not change. For systems under constant and oscillatory shear we analyze domain growth rates in directions parallel and perpendicular to the applied shear. We find a structural transition from a sponge to a lamellar phase by applying a constant shear and the occurrence of tubular structures under oscillatory shear. The size of the resulting lamellae and tubes depends strongly on the amphiphile concentration, shear rate and shear frequency.
description: 12 pages, 11 figures
Nucleons, Nuclear Matter and Quark Matter: A unified NJL approach
Creators: name: Lawley, S.
name: Bentz, W.
name: Thomas, A. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We use an effective quark model to describe both hadronic matter and deconfined quark matter. By calculating the equations of state and the corresponding neutron star properties, we show that the internal properties of the nucleon have important implications for the properties of these systems.
description: 17 pages, 5 figures, Section 5 extended, references added
Free Groups in Lattices
Creators: name: Bowen, Lewis
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 20E07, 20F65, 20F67, 22D40, 20E05

description: Let G be any locally compact, unimodular, metrizable group. The main result of this paper, roughly stated, is that if F
description: This version corrects a few typos. Version 4 is a major rewrite over version 3
Γυναικών πόλεις και δρόμοι της γραφής: Όψεις της γυναικείας αστυγραφίας και μεταμορφώσεις του αστικού στη νεοελληνική μεταπολεμική πεζογραφία:
Creators: name: Μακαρώνη, Καλλιόπη Κλεάνθη
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Ελληνική λογοτεχνία
Πόλεις - Αστυγραφία
Γυναίκες
Greek literature
Cities – Urban writing
Women

description: Η μεταπτυχιακή διπλωματική εργασία «Γυναικών πόλεις και δρόμοι της γραφής: Όψεις της γυναικείας αστυγραφίας και μεταμορφώσεις του αστικού στη μεταπολεμική πεζογραφία» ασχολείται και διερευνά την αφηγηματική καταγραφή, διάθλαση, αποτύπωση και επανεγγραφή της αστικής εμπειρίας των γυναικείων υποκειμένων, όπως αυτή προκύπτει από την ειδική και σημαίνουσα προοπτική των μεταπολεμικών γυναικών συγγραφέων και εν συνεχεία διαμεσολαβείται μέσω της λογοτεχνικής πραγμάτευσής της. Με αφετηρία την ταραγμένη δεκαετία 1940-1950 και με ενδιάμεσους σταθμούς το προπολεμικό και μεσοπολεμικό κλίμα, φτάνοντας ως την τομή που φέρνει η λογοτεχνία των δεκαετιών 1980- 1990 και 1990-2000, επιλέχθηκαν λογοτεχνικά κείμενα που αποτυπώνουν με άμεσο ή και κεκαλυμμένο τρόπο τις εντάσεις του αστικού βίου και τη διαμόρφωση της αστυακής ταυτότητας. Τα κείμενα τα οποία τοποθετούνται στα ιστορικά τους συγκείμενα και εξετάζεται η σχέση τους με τη διαμόρφωση της λογοτεχνικής ιστορίας και του λογοτεχνικού κανόνα είναι τα εξής: 1. Μαργαρίτας Λυμπεράκη, Ψάθινα Καπέλα, [χ.ο], Αετός, Αθήνα 1946, Καστανιώτης, Αθήνα 1995 (πεντηκοστή έκδοση 2. Μιμίκας Κρανάκη, Contre-temps, [χ.ο], Αθήνα 1947, Εστία, Αθήνα 1975 (β΄έκδοση) 3. Μαρίας Ιορδανίδου, Σαν τα τρελά πουλιά, Εστία, Αθήνα 1978 4. Νικόλ Ρούσσου, Πες στη Μορφίνη, ακόμα την ψάχνω, Αλεξάνδρεια, Αθήνα 1996
description: The postgraduate main dissertation “Women’s cities and paths of writing: Aspects of female urban writing and transformations of the urban experience in greek postwar prose” deals with and thoroughly examines the narrative registration, refraction, impression and rewriting of the urban experience which female subjects gained, as this experience results from the particular and influential perspective of women writers and afterwards is mediated through its literary treatment. Having as a starting point the troubled decade of 1940-1950 and going back as an intermezzo in the prewar and the years 1920-1930, to arrive at the turning point of greek literary history during the years 1980-1990 and 1990-2000, we have chosen those literaty texts which mark in a special, direct or indirect way, the tensions of urban lifestyle and the construction of urban identity. Literary texts, which are situated in their historical contexts and examined through their relationship with literary history and literary canon are: 1. Margarita Lymperaki, Three summers (Modern Greek Writers series), trans. Karen Van Dyck, Athens: Kedros 1996 2. Mimika Kranaki, Contre-temps, Athens: 1947, 1975 Estia 3. Maria Iordanidou, San ta trela poulia, Athens: Estia 1978 4. Nikole Roussou, Pes sti Morphini, akoma tin psaxno, Athens: Alexandreia 1996
Application of chiral nuclear forces to light nuclei
Creators: name: Nogga, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In these proceedings, we discuss the current status of nuclear bound state predictions based on chiral nuclear interactions. Results of ordinary $s$- and $p$-shell nuclei and light hypernuclei are shown.
description: 12 pages, 2 figures, corrected typos in Table 5, version as published