cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Existence and Stability of N-Pulses on Optical Fibers with Phase-Sensitive Amplifiers
Creators: name: Alexander, James C.
name: Jones, Christopher K. R. T.
name: Sandstede, Björn
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: homoclinic orbits
subject: bifurcation
subject: stability
subject: optical fibers
subject: 34C37
subject: 35B35
subject: 35Q55
subject: 78A60

description: The propagation of pulses in optical communication systems in which attenuation is compensated by phase-sensitive amplifiers is investigated. A central issue is whether optical fibers are capable of carrying several pieces of information at the same time. In this paper, multiple pulses are shown to exist for a fourth-order nonlinear diffusion model due to Kutz and co-workers [10]. Moreover, criteria are derived for determining which of these pulses are stable. The pulses arise in a reversible orbit-flip, a homoclinic bifurcation investigated here for the first time. Numerical simulations are used to study multiple pulses far away from the actual bifurcation point. They confirm that properties of the multiple pulses including their stability are surprisingly well predicted by the analysis carried out near the bifurcation.
Rotating Solar Jets in Simulations of Flux Emergence with Thermal Conduction
Creators: name: Fang, Fang
name: Fan, Yuhong
name: McIntosh, Scott W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the formation of coronal jets through numerical simulation of the emergence of a twisted magnetic flux rope into a pre-existing open magnetic field. Reconnection inside the emerging flux rope in addition to that between the emerging and pre-existing fields give rise to the violent eruption studied. The simulated event closely resembles the coronal jets ubiquitously observed by Hinode/XRT and demonstrates that heated plasma is driven into the extended atmosphere above. Thermal conduction implemented in the model allows us to qualitatively compare simulated and observed emission from such events. We find that untwisting field lines after the reconnection drive spinning outflows of plasma in the jet column. The Poynting flux in the simulated jet is dominated by the untwisting motions of the magnetic fields loaded with high-density plasma. The simulated jet is comprised of spires of untwisting field that are loaded with a mixture of cold and hot plasma and exhibit rotational motion of order 20 km/s and match contemporary observations.
description: 14 pages, 5 figures, accepted for publication in the Astrophysical Journal Letters
Approximate wavelets and the approximation of pseudodifferential operators
Creators: name: Maz´Ya, Vladimir
name: Schmidt, Gunther
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: Cubature formulas
subject: approximate multiresolution
subject: multivariate wavelets
subject: 41A30
subject: 41A63
subject: 65D30

description: The paper studies an approximate multiresolution analysis for spaces generated by smooth functions which provide high order cubature formulas for integral operators of mathematical physics. Since these functions satisfy refinement equations with any prescribed accuracy methods of the wavelet theory can be applied. We obtain a decomposition of the finest scale space into almost orthogonal wavelet spaces. For one example we study some properties of the analytic prewavelets, describe the projection operators onto the wavelet spaces and consider some applications to the cubature of integral operators.
On the identification of soil transmissivity from measurements of the groundwater level
Creators: name: Bruckner, Gottfried
name: Handrock-Meyer, Sybille
name: Langmach, Hartmut
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: Inverse problems
subject: direct methods
subject: finite elements
subject: linear boundary value problem
subject: 35R30
subject: 86A05
subject: 76S05
subject: 65N30

description: This paper is devoted to the inverse problem of identifying a spatially varying coefficient in a linear elliptic differential equation describing the filtration of groundwater. Practice suggests that the gradient of the piezometric head, i.e., Darcy's velocity, may have discontinuities and the transmissivity coefficient is a piecewise constant function. For solving this problem we have used a direct method of G. Vainikko. Starting at a weak formulation of the problem a suitable discretization is obtained by the method of minimal error. If necessary this method can be combined with Tikhonov's regularization. The main difficulty consists in generating distributed state observations from measurements of the ground water level. For this step we propose an optimized data preparation procedure using additional information like knowledge of the sought parameter values at some points and lower and upper bounds for the parameter. First numerical tests show that locally sufficiently many measurements provide locally satisfactory results.
Theoretical study of dynamical and electronic properties of noncentrosymmetric superconductor NbReSi
Creators: name: Basak, Surajit
name: Ptok, Andrzej
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The noncentrosymmetric NbReSi superconductor with $T_{c} \simeq 6.5$ K is characterized by the relatively large upper critical magnetic field. Its multigap features were observed experimentally. Recent studies suggested realization of P$\bar{6}$2m or Ima2 symmetry. We discuss the dynamical properties of both symmetries (e.g., phonon spectra). In this paper, using the ab initio techniques, we clarify this ambiguity, and conclude that the Ima2 symmetry is unstable, and P$\bar{6}$2m should be realized. The P$\bar{6}$2m symmetry is also stable in the presence of external hydrostatic pressure. We show that NbReSi with the P$\bar{6}$2m symmetry should host phonon surface states for (100) and (110) surfaces. Additionally, we discuss the main electronic properties of the system with the stable symmetry.
description: 10 pages, 7 figures
Symplectic Connections on Supermanifolds: Existence and Non-Uniqueness
Creators: name: Blaga, Paul A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58A50, 53D05

description: We show, in this note, that on any symplectic supermanifold, even or odd, there exist an infinite dimensional affine space of symmetric connections, compatible to the symplectic form.
description: 7 pages
Electric field tuning of magnetic states in single magnetic molecules
Creators: name: Lu, Yan
name: Wang, Yunlong
name: Zhu, Linghan
name: Yang, Li
name: Wang, Li
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Single magnetic molecules may be the smallest functional magnets. An electric-field controllable spin state of magnetic molecules is of fundamental importance for applications while its realization remains challenging. To date the observed spin-electric interaction based on spin-orbit coupling or spin dipole coupling is useful to tune fine spin structures but too weak to flip the spin state. In this work, we propose a new mechanism to realize enhanced spin-electric coupling and flip the spin states by tuning the spin superexchange between local spins. Using first-principles calculations and Heisenberg Hamiltonian, we demonstrate this effect in a family of magnetic molecules, transition metallic Porphyrins. We show that their d-π and π-π spin superexchange couplings are determined by the relative energies of d and π electronic states, which are sensitive to the applied electric field. Therefore, applying electric field can tune a wide range of magnetic ground states, including ferromagnetic, ferrimagnetic, and antiferromagnetic configurations. This spin-electric coupling may provide a new approach for designing and controlling molecular spintronics.
description: 21 pages, 7 figures
Implementing an ict-based polypharmacy management program in Italy
Creators: name: Arcopinto, Michele
name: Cataldi, Mauro
name: De Luca, Vincenzo
name: Orlando, Valentina
name: Simeone, Giuseppe
name: D’Assante, Roberta
name: Postiglione, Alfredo
name: Guida, Antonella
name: Trama, Ugo
name: Illario, Maddalena
name: Coscioni, Enrico
name: Iaccarino, Guido
name: Cuccaro, Paula
name: D’Onofrio, Gaetano
name: Vigorito, Carlo
name: Cittadini, Antonio
name: Ferrara, Nicola
name: Menditto, Enrico
Publisher: name: Universita' degli Studi di Salerno
Year: 2017
Subjects: Polypharmacy
Elderly patients

description: Although there is evidence of a growing awareness of the problem, no official policy statements or regulatory guidelines on polypharmacy have been released up to date by Italian Health Authorities. Medication review, application of appropriateness criteria and computerized prescription support systems are all possible approaches in order to improve the quality of prescribing in older persons. More focused training courses on multimorbidity and polytherapy management are encouraged. Furthermore a multidisciplinary approach integrating different health care professionals (physicians, pharmacists, and nurses) may positively impact on reducing the sense of fear related to discontinue or substitute drugs prescribed by others; the fragmentation of therapy among different specialists; reducing costs; and improving adverse drug reaction detection and reporting. Aiming at achieving the individualized pharmacotherapy, a multidisciplinary approach starting with identification of patients and risk for drug-related problems, followed by medication review overtime and use of inappropriateness criteria, supported by computerized systems has been proposed.
title: Κάπνισμα & άσκηση στην αναπηρία
titleType: AlternativeTitle
Creators: name: Παπατσιακμάκη, Γεωργία Θ.
Publisher: name: University of Thessaly
Year: 2006
Subjects: subject: ΚΑΠΝΙΣΜΑ
subject: ΑΤΟΜΑ ΜΕ ΕΙΔΙΚΕΣ ΑΝΑΓΚΕΣ -- ΑΘΛΗΣΗ

description: Μεταξύ των σημαντικότερων παραγόντων κινδύνου για την υγεία κάθε ατόμου είναι το κάπνισμα και η αποφυγή φυσικής δραστηριότητας. Από την ανασκόπηση της σχετικής βιβλιογραφίας διαπιστώθηκε ότι οι συγκεκριμένοι παράγοντες κινδύνου έχουν ελάχιστα μελετηθεί όσον αφορά σε άτομα με αναπηρίες. Σκοπός της παρούσας έρευνας ήταν η σκιαγράφηση του προφίλ της συμπεριφοράς σε σχέση με το κάπνισμα και την άσκηση των ατόμων με αναπηρίες στην Ελλάδα κι ο εντοπισμός παραγόντων που εμπλέκονται στη διαμόρφωση αυτών των συμπεριφορών. Το ερευνητικό δείγμα αποτέλεσαν 201 άνδρες και γυναίκες ηλικίας 15-50 ετών με νοητικές, κινητικές, αισθητηριακές ή πολλαπλές αναπηρίες. Η συλλογή των απαιτούμενων πληροφοριών έγινε με τη συμπλήρωση σχετικών ερωτηματολογίων. Η ανάλυση των δεδομένων έγινε με ανάλυση χ2, με απλή ανάλυση διακύμανσης (ANOVA) και με ανάλυση συσχέτισης. Σύμφωνα με τα αποτελέσματα η ηλικία, το μορφωτικό επίπεδο, η μορφή αναπηρίας, η χρονική διάρκεια παρουσίας της αναπηρίας και το επίπεδο λειτουργικότητας έχουν σημαντική επίδραση στην οικειοποίηση της συνήθειας του καπνίσματος. Από την άλλη εντοπίστηκαν διαφορές ως προς τη διαμόρφωση της συμπεριφοράς σε σχέση με την άσκηση με βάση το μορφωτικό επίπεδο, τη μορφή αναπηρίας και το επίπεδο λειτουργικότητας. Τέλος φάνηκε ότι οι καπνιστές-στριες με αναπηρίες είχαν υψηλότερα σκορ ως προς το Συνολικό Δείκτη Άσκησης από τα αντίστοιχα των μη καπνιστών-στριών με αναπηρίες. Συμπερασματικά είναι απαραίτητος ο εντοπισμός όλων των εμπλεκομένων στη διαμόρφωση των υγιεινών συνηθειών παραγόντων στα άτομα με αναπηρίες, ώστε να διαμορφωθούν και να εφαρμοστούν κατάλληλα προγράμματα αγωγής υγείας για τις ανάγκες κάθε ατόμου με αναπηρία.
title: Επίδραση σύγχρονων συστημάτων άρδευσης στα παραγωγικά χαρακτηριστικά τευτλών
titleType: AlternativeTitle
Creators: name: Δημοπούλου, Καλλιρρόη Α.
Publisher: name: University of Thessaly
Year: 2005
Subjects: subject: ΤΕΥΤΛΑ
subject: ΑΡΔΕΥΣΗ

description: Αξιολογήθηκε η επίδραση της υπόγειας στάγδην άρδευσης στα παραγωγικά χαρακτηριστικά καλλιέργειας ζαχαρότευτλων, συγκρίνοντάς την με την επιφανειακή στάγδην άρδευση σε δύο περιπτώσεις: α) για ίδιο εύρος άρδευσης και στα δύο αρδευτικά συστήματα, σύμφωνα με την μετρούμενη εξατμισοδιαπνοή της καλλιέργειας (ΕΤ) και β) για εύρος άρδευσης στο μεν επιφανειακό σύστημα σύμφωνα με την καλλιεργητική πρακτική, στο δε υπόγειο σύμφωνα με την ΕΤ. Ταυτόχρονα έγινε σύγκριση μεταξύ των επιφανειακών μεθόδων που δέχθηκαν διαφορετικές δόσεις νερού σε ίδιο εύρος άρδευσης, καθώς και μεταξύ αυτών που δέχθηκαν ίδια δόση νερού σε διαφορετικό εύρος άρδευσης. Για το σκοπό αυτό εγκαταστάθηκε πείραμα στο αγρόκτημα του πανεπιστημίου Θεσσαλίας, το 2003. Το πειραματικό σχέδιο ήταν Πλήρεις Τυχαιοποιημένες Ομάδες με 5 μεταχειρίσεις και 4 επαναλήψεις. Η άρδευση ήταν αυτοματοποιημένη και η δόση άρδευσης καθορίστηκε σύμφωνα με την εξατμισοδιαπνοή, με την βοήθεια εξατμισιμέτρου τύπου Α, σε κάλυψη 100% και 80% των αναγκών της καλλιέργειας. Τα αποτελέσματα έδειξαν υπεροχή της υπόγειας στάγδην άρδευσης στην τελική αξία (χρηματική) της παραγωγής έχοντας ταυτόχρονα σημαντική εξοικονόμηση νερού. Στις επιφανειακές μεταχειρίσεις ιδίου εύρους άρδευσης, η χορήγηση μεγαλύτερης ποσότητας νερού έδωσε μεγαλύτερη αξίας παραγωγή, ενώ υπήρξε υπεροχή των μεταχειρίσεων με το μικρότερο εύρος άρδευσης και την ίδια δόση νερού. Η συγκέντρωση των μελασογόνων συστατικών Κ, Να και α-amino Ν στις ρίζες των ζαχαροτεύτλων δεν παρουσίασε στατιστικώς σημαντικές διαφορές (ρ=0,05) ανάμεσα στις μεταχειρίσεις, αν και ήταν λίγο μικρότερη στην υπόγεια στάγδην άρδευση.
The quartic Fermat equation in Hilbert class fields of imaginary quadratic fields
Creators: name: Lynch, Rodney
name: Morton, Patrick
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: It is shown that the quartic Fermat equation $x^4 +y^4=1$ has nontrivial integral solutions in the Hilbert class field $Σ$ of any quadratic field $K=\mathbb{Q}(\sqrt{-d})$ whose discriminant satisfies $-d \equiv 1$ (mod 8). A corollary is that the quartic Fermat equation has no nontrivial solution in $K=\mathbb{Q}(\sqrt{-p})$, for $p$ $( > 7)$ a prime congruent to $7$ (mod 8), but does have a nontrivial solution in the odd degree extension $Σ$ of $K$. These solutions arise from explicit formulas for the points of order 4 on elliptic curves in Tate normal form. The solutions are studied in detail and the results are applied to prove several properties of the Weber singular moduli introduced by Yui and Zagier.
Gas accretion onto Jupiter mass planets in discs with laminar accretion flows
Creators: name: Nelson, R. P.
name: Lega, E.
name: Morbidelli, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: (Abridged) Studies have shown that a Jovian mass planet embedded in a viscous protoplanetary disc (PPD) can accrete gas efficiently through the gap and doubles its mass in $\sim 0.1$ Myr. The planet also migrates inwards on a timescale of $\sim 0.1$ Myr. These timescales are short compared to PPD lifetimes, and raise questions about the origins of cold giant exoplanets. However, PPDs are unlikely to be globally turbulent, and instead they may launch magnetised winds such that accretion towards the star occurs in laminar accretion flows located in narrow layers near the surfaces of the disc. The aim of this study is to examine the rate at which gas accretes onto Jovian mass planets that are embedded in layered PPDs. We use 3D hydrodynamical simulations of planets embedded in PPDs, in which a constant radial mass flux towards the star of ${\dot m} = 10^{-8}$ M$_{\odot}$ yr$^{-1}$ is sustained. We consider a classical viscous alpha model, and also models in which an external torque is applied in narrow surface layers to mimic the effects of a magnetised wind. The accreting layers are parameterised by their column densities $Σ_{\rm A}$, and we consider values in the range 0.1 to 10 g cm$^{-2}$. The viscous model gives results in agreement with previous studies. We find the accretion rate onto the planet in the layered models crucially depends on the planet's ability to block the wind-induced mass flow. For $Σ_{\rm A}=10$ g cm$^{-2}$, the planet torque can block the mass flow through the disc, accretion onto the planet is slow, and a mass doubling time of 10 Myr is obtained. For $Σ_{\rm A}=0.1$ g cm$^{-2}$, accretion is fast and the mass doubling time is 0.2 Myr. Although the radial mass flow through the layered disc models is always $10^{-8}$ M$_{\odot}$ yr$^{-1}$, adopting different values of $Σ_{\rm A}$ leads to very different gas accretion rates onto gas giant planets.
description: 14 pages, 11 figures, accepted for publication in Astronomy & Astrophysics
Efficient Maximum $k$-Defective Clique Computation with Improved Time Complexity
Creators: name: Chang, Lijun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: $k$-defective cliques relax cliques by allowing up-to $k$ missing edges from being a complete graph. This relaxation enables us to find larger near-cliques and has applications in link prediction, cluster detection, social network analysis and transportation science. The problem of finding the largest $k$-defective clique has been recently studied with several algorithms being proposed in the literature. However, the currently fastest algorithm KDBB does not improve its time complexity from being the trivial $O(2^n)$, and also, KDBB's practical performance is still not satisfactory. In this paper, we advance the state of the art for exact maximum $k$-defective clique computation, in terms of both time complexity and practical performance. Moreover, we separate the techniques required for achieving the time complexity from others purely used for practical performance consideration; this design choice may facilitate the research community to further improve the practical efficiency while not sacrificing the worst case time complexity. In specific, we first develop a general framework kDC that beats the trivial time complexity of $O(2^n)$ and achieves a better time complexity than all existing algorithms. The time complexity of kDC is solely achieved by non-fully-adjacent-first branching rule, excess-removal reduction rule and high-degree reduction rule. Then, to make kDC practically efficient, we further propose a new upper bound, two reduction rules, and an algorithm for efficiently computing a large initial solution. Extensive empirical studies on three benchmark graph collections with $290$ graphs in total demonstrate that kDC outperforms the currently fastest algorithm KDBB by several orders of magnitude.
description: Accepted by SIGMOD 2024 in May 2023
INQUA 2023 Abstract: Evidence of Late Cenozoic reactivation of an inhereted strike-slip fault system in the Longitudinal Valley of Northernmost Chile
Creators: name: Vega-Ruiz, Ambrosio
name: Victor, Pia
name: Pena-Castellnou, Sara
name: Reicherter, Klaus
Publisher: name: -
Year: 2023
Subjects: subject: Geoscientific Information
subject: Neotectonics
subject: Cosmogenic Nuclides
subject: Geomorphology
subject: Tectonics
subject: Structural Geology

description: This publication correspond to an abstract accepted as an oral presentation in the XXI International INQUA Congress 2023, held in Rome, on 14–20 July 2023. The work was presented in the session 185 &039;Active faults evolution: revelations from different timescales&039;. The abstract is shown in the inquaroma2023.exordo.com platform printed in a PDF.
A Spectro-photometric Analysis of Cool White Dwarfs in the Gaia and Pan-STARRS Footprint
Creators: name: Caron, Alexandre
name: Bergeron, Pierre
name: Blouin, Simon
name: Leggett, Sandy K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a spectro-photometric analysis of 2880 cool white dwarfs within 100 pc of the Sun and cooler than Teff = 10,000 K, with grizy Pan-STARRS photometry and Gaia trigonometric parallaxes available. We also supplement our data sets with near-infrared JHK photometry, when available, which is shown to be essential for interpreting the coolest white dwarfs in our sample. We perform a detailed analysis of each individual object using state-of-the-art model atmospheres appropriate for each spectral type including DA, DC, DQ, DZ, He-rich DA, and the so-called IR-faint white dwarfs. We discuss the temperature and mass distributions of each subsample, as well as revisit the spectral evolution of cool white dwarfs. We find little evidence in our sample for the transformation of a significant fraction of DA stars into He-atmosphere white dwarfs through the process of convective mixing between Teff = 10,000 K and 6500 K, although the situation changes drastically in the range Teff = 6500 - 5500 K where the fraction of He-atmosphere white dwarfs reaches 45%. However, we also provide strong evidence that at even cooler temperatures (Teff < 5200 K), most DC white dwarfs have H atmospheres. We discuss a possible mechanism to account for this sudden transformation from He- to H-atmosphere white dwarfs involving the onset of crystallization and the occurrence of magnetism. Finally, we also argue that DQ, DZ, and DC white dwarfs may form a more homogeneous population than previously believed.
description: Accepted for publication in MNRAS (21 pages, 20 figures)
Megaerops wetmorei Taylor 1934
Creators: name: Voon-Ching Lim
name: Rosli Ramli
name: Bhassu, Subha
name: John-James Wilson
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Megaerops
Megaerops wetmorei

description: Megaerops wetmorei Taylor, 1934 Megaerops wetmorei Taylor, 1934: 191; near Tatayan, Cotobato, Mindanao Island, PHILIP- PINES (E. H. Taylor, collector; Described based on specimen No. 770 in E.H. Taylor’s collection with unknown current location) [83]. Common English name: White-collared Fruit Bat Barcode Index Number: BOLD:AAX3327 (1 DNA barcode from Peninsular Malaysia; Fig 2) IUCN status: Vulnerable Remarks: The species was first recorded in Peninsular Malaysia as a new subspecies, M. w. albicollis in Pasoh Forest Reserve [84] with distinctive white tufts on the shoulders and neck [11, 84]. The type of M. wetmorei [83] lacked the white neck tufts (which was followed in the description by Corbet and Hill [9]) and has a short tail of 1.5 mm [83]. Specimens of M. w. albicollis from Pasoh Forest Reserve have a short tail of ~ 4 mm [84] whereas specimens from Krau Wildlife Reserve [11] are tailless. Further analysis, and more DNA barcordes, would be required to determine whether M. w. albicollis deserves to be recognised as a species distinct from M. w. wetmorei. Recorded at: Pahang: Krau Wildlife Reserve [11]; Negeri Sembilan: Pasoh Forest Reserve [45, 84]. M. wetmorei has only been recorded in mature forests [11, 14].
description: Published as part of Voon-Ching Lim, Rosli Ramli, Subha Bhassu & John-James Wilson, 2017, A checklist of the bats of Peninsular Malaysia and progress towards a DNA barcode reference library, pp. 1-65 in PLoS ONE 12 (7) on page 11, DOI: 10.1371/journal.pone.0179555, http://zenodo.org/record/4251352
description: {"references": ["83. Taylor EH. Philippine land mammals. Monograph No. 30, Bureau of Science, Department of Agriculture and Commerce, Government of the Philippine Islands, Manila; 1934.", "84. Francis CM. Notes on fruit bats (Chiroptera, Pteropodidae) from Malaysia and Brunei, with the description of a new subspecies of Megaerops wetmorei Taylor, 1934. Can J Zool. 1989; 67 (12): 2878 - 2282.", "11. Kingston T, Lim BL, Akbar Z. Bats of Krau wildlife reserve. Penerbit Universiti Kebangsaan Malaysia; 2006.", "9. Corbet GB, Hill JE. The mammals of the Indomalayan region: a systematic review. Oxford: Oxford University Press; 1992.", "45. Francis CM. Trophic structure of bat communities in the understorey of lowland dipterocarp rain forest in Malaysia. J Trop Ecol. 1990; 6: 421 - 431.", "14. Francis CM. A field guide to the mammals of South-East Asia. New Holland Publishers; 2008."]}
Spectral and Entanglement Properties of the Bosonic Haldane Insulator
Creators: name: Ejima, Satoshi
name: Lange, Florian
name: Fehske, Holger
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the existence of a nontrivial topological phase in one-dimensional interacting systems described by the extended Bose-Hubbard model with a mean filling of one boson per site. Performing large-scale density-matrix renormalization group calculations we show that the presence of nearest-neighbor repulsion enriches the ground-state phase diagram of the paradigmatic Bose-Hubbard model by stabilizing a novel gapped insulating state, the so-called Haldane insulator, which, embedded into superfluid, Mott insulator, and density wave phases, is protected by the lattice inversion symmetry. The quantum phase transitions between the different insulating phases were determined from the central charge via the von Neumann entropy. The Haldane phase reveals a characteristic fourfold degeneracy of the entanglement spectrum. We finally demonstrate that the intensity maximum of the dynamical charge structure factor, accessible by Bragg spectroscopy, features the gapped dispersion known from the spin-1 Heisenberg chain.
description: 5 pages, 4 figures + 3 pages supplemental material
title: Μελέτη της ανθεκτικότητας πληθυσμών του δάκου της ελιάς σε εντομοκτόνα
titleType: AlternativeTitle
Creators: name: Σκούρας, Παναγιώτης
Publisher: name: University of Thessaly
Year: 2005
Subjects: subject: ΕΛΑΙΑ -- ΑΣΘΕΝΕΙΕΣ ΚΑΙ ΠΑΡΑΣΙΤΑ
subject: ΔΑΚΟΣ ΤΗΣ ΕΛΙΑΣ

description: Το έντομο Bactrocerae oleae (Gmelin), ο κοινός δάκος της ελιάς, θεωρείται ως ένα από τα πλέον βλαβερά έντομα, δεδομένου ότι προκαλεί τεράστιες καταστροφές στην ελαιοπαραγωγή. Ο έλεγχος του δάκου γίνεται ως επί το πλείστον με χρήση χημικών εντομοκτόνων. Πέρα από τις καταστροφικές επιπτώσεις των εντομοκτόνων στο περιβάλλον και γενικά στο οικοσύστημα, η υπερβολική και η μη ορθολογική χρήση τους έχει δημιουργήσει και ένα έντονο πρόβλημα ανθεκτικότητας των εντόμων στα εντομοκτόνα. Για το λόγο αυτό μελετήθηκε η ανθεκτικότητα του δάκου στο οργανοφωσφορικό εντομοκτόνο dimethoate, και στο πυρεθροειδές εντομοκτόνο alphacypermethrin, με βιοδοκιμές σε άτομα από φυσικούς πληθυσμούς που συλλέχθηκαν από διαφορετικές περιοχές της Ελλάδος και της Κύπρου κατά τα έτη 2003 και 2004, καθώς και από εργαστηριακό πληθυσμό. Οι βιοδοκιμές έγιναν με τοπική εφαρμογή του εντομοκτόνου. Τα αποτελέσματα έδειξαν επίπεδα ανθεκτικότητας στους φυσικούς πληθυσμούς 5-60 φορές μεγαλύτερα σε σχέση με ευαίσθητο εργαστηριακό πληθυσμό στο dimethoate, ενώ στο alpha-cypermethrin από 2-50 φορές. Τα επίπεδα αυτά είναι υπερδεκαπλάσια σε σχέση με το μέχρι τώρα δημοσιευμένο. Η παραλλακτικότητα αυτή ανάμεσα στους πληθυσμούς μπορεί να οφείλεται είτε στη διαφορετική πίεση επιλογής, είτε στη μετανάστευση. Πέραν αυτού, εξετάσθηκε και η κατάσταση της ανθεκτικότητας, σε ορισμένους πληθυσμούς των συγγενών ειδών, Ceratitis capitata (Μεσογειακή μύγα) και Rhagoletis cerasi (μύγα των κερασιών), όπου στη Μεσογειακή μύγα η ανθεκτικότητα ήταν μόλις μέχρι 2,5 φορές μεγαλύτερη από την αντίστοιχη του εργαστηριακού πληθυσμού, ενώ στην μύγα των κερασιών δεν φαίνεται να έχει ανθεκτικότητα.
First detection of the outer edge of an AGN accretion disc: Very fast multiband optical variability of NGC 4395 with GTC/HiPERCAM and LT/IO:O
Creators: name: McHardy, I. M.
name: Beard, M.
name: Breedt, E.
name: Knapen, J. H.
name: Vincentelli, F. M.
name: Veresvarska, M.
name: Dhillon, V. S.
name: Marsh, T. R.
name: Littlefair, S. P.
name: Horne, K.
name: Glew, R.
name: Goad, M. R.
name: Kammoun, E.
name: Emmanoulopoulos, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present fast (~200s sampling) ugriz photometry of the low mass AGN NGC 4395 with the Liverpool Telescope, followed by very fast (3s sampling) us, gs, rs, is and zs simultaneous monitoring with HiPERCAM on the 10.4m GTC. These observations provide the fastest ever AGN multiband photometry and very precise lag measurements. Unlike in all other AGN, gs lags us by a large amount, consistent with disc reprocessing but not with reprocessing in the Broad Line Region (BLR). There is very little increase in lag with wavelength at long wavelengths, indicating an outer edge (Rout) to the reprocessor. We have compared truncated disc reprocessing models to the combined HiPERCAM and previous X-ray/UV lags. For the normally accepted mass of 3.6E5 solar, we obtain reasonable agreement with zero spin, Rout ~1700 Rg, and the DONE physically-motivated temperature-dependent disc colour correction factor (fcol). A smaller mass of 4E4 solar can only be accomodated if fcol=2.4, which is probably unrealistically high. Disc self gravity is probably unimportant in this low mass AGN but an obscuring wind may provide an edge. For the small mass the dust sublimation radius is similar to Rout, so the wind could be dusty. However for the more likely large mass the sublimation radius is further out so the optically-thick base of a line-driven gaseous wind is more likely. The inner edge of the BLR is close to Rout in both cases. These observations provide the first good evidence for a truncated AGN disc and caution that truncation should be included in reverberation lag modelling.
description: 19 pages, 27 figures
Thermofield-Bosonization on Compact Space
Creators: name: Amaral, R. L. P. G.
name: Belvedere, L. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop the construction of fermionic fields in terms of bosonic ones to describe free and interaction models in the circle, using thermofielddynamics. The description in the case of finite temperature is developed for both normal modes and zero modes. The treatment extends the thermofield-bosonization for periodic space.
The TRIPLE project – Towards technology solutions for life detection missions
Creators: name: Kowalski, Julia
name: Boxberg, Marc Sebastian
name: Grundmann, Jan Thimo
name: de Vera, Jean-Pierre Paul
name: Heinen, Dirk
name: Funke, Oliver
name: TRIPLE Consortium
name: Nitsch, Maximilian
name: Waldmann, Christoph
name: Gerrlich, Victoria
name: Engler, Christian
name: Meckel, Sebastian
name: Bachmeyer, Ralf
name: Pirek, Axel
name: Clemens, Joachim
name: Koch, Till
name: Stenger, David
name: Audehm, Jan
name: Do, Mia Giang
name: Zierke, Simon
name: Wiebusch, Christopher
name: Firvida, Miguel Bande
name: Christensen, Leif
name: Rust, Jochen
name: Geißinger, Konstantin
name: Stelzig, Michael
name: Haberberger, Niklas
name: Becker, Fabian
name: Pallentin, Malte
name: Purser, Autun
name: Espe, Clemens
name: Feldmann, Marco
name: Francke, Gero
name: Panten, Philippe
name: Bestmann, Ulf
name: Geenen, Eva-Maria
Publisher: name: RWTH Aachen University
Year: 2023

description: Abstracts & presentations / EGU General Assembly 2023 EGU General Assembly 2023, EGU 2023, Vienna, Austria, 23 Apr 2023 - 28 Apr 2023; Göttingen : Copernicus Gesellschaft mbH (2023). doi:10.5194/egusphere-egu23-17371
description: Published by Copernicus Gesellschaft mbH, Göttingen
Hamming Distributions of Popular Perceptual Hashing Techniques
Creators: name: McKeown, Sean
name: Buchanan, William J
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Content-based file matching has been widely deployed for decades, largely for the detection of sources of copyright infringement, extremist materials, and abusive sexual media. Perceptual hashes, such as Microsoft's PhotoDNA, are one automated mechanism for facilitating detection, allowing for machines to approximately match visual features of an image or video in a robust manner. However, there does not appear to be much public evaluation of such approaches, particularly when it comes to how effective they are against content-preserving modifications to media files. In this paper, we present a million-image scale evaluation of several perceptual hashing archetypes for popular algorithms (including Facebook's PDQ, Apple's Neuralhash, and the popular pHash library) against seven image variants. The focal point is the distribution of Hamming distance scores between both unrelated images and image variants to better understand the problems faced by each approach.
Pratiche trattamentali e di reinserimento sociale dei detenuti: il caso dell’IPM di Nisida
Creators: name: Casale, Giuseppina
Publisher: name: Universita degli studi di Salerno
Year: 2017
Subjects: subject: IUS/20 FILOSOFIA DEL DIRITTO
subject: Carcere minorile
subject: Criminalità
subject: Reinserimento

description: 2015 - 2016
description: The aim of this PhD work is to provide indications on comfort in the case of the Man-Machine interface and to guarantee all the tools for evaluating them. In order to analyze comfort, it was necessary to carry out a bibliographic survey on ergonomics and subsequently on comfort, identifying the shortcomings and all the aspects not considered. After these studies, a model of comfort perception was created that summarizes the concept that comfort and discomfort are the measure of the degree of appreciation linked to expectations and to the interaction between the person and the environment. Since comfort and discomfort related to the sitting are widely studied in the automotive field, the model of comfort perception has been applied to this case, identifying all the elements of the model that participate in the comfort / discomfort experiences. The expectation factor was also analyzed, in order to understand the mechanism of the influence of the expectation on general comfort; to prove it, an experimental test was carried out using the "placebo" effect. In the final phase of the discussion, attention was focused on two aspects that influence comfort in the Man-Object interaction, that is, the temperature and the pressure distribution at the interface. For both factors (temperature and pressure) we started from a deep bibliographic research in order to identify the most significant variables, extrapolated from pressure distributions and the temperature of the skin to the body-object interface, which must be considered when wants to evaluate how pressure and temperature at the interface affect perceived comfort. Subsequently, through case studies it was possible to verify all the significant correlations that these variables have with the level of perceived comfort by the subjects who participated in the tests. [a cura dell’autore]
Intelligently generating optimal designs and processes for computer controlled 3D fabrication
Creators: name: Jephcott, James
Publisher: name: CQUniversity
Year: 2023
Subjects: Additive manufacturing

description: Slicing is the process of taking a digital 3D model and converting that model into instructions that represent a tool path for a 3D printer to follow. Producing instructions that can be used by the 3D printer to create the digital 3D model as a physical object. This thesis examines the slicing process for Fused Filament Fabrication (FFF) 3D printing technology; an extrusion-based 3D printing technology where a physical model is built up layer by layer and line by line, creating a physical replica of the digital model. This thesis examines the previous research that has been completed on 3D printing and slicing and provides background information on relevant file formats. An example model that can be used to demonstrate the slicing process is presented. Using the example model this research presents the steps involved in taking a digital 3D model and slicing that model to produce a tool path for a 3D printer. Next, this thesis presents two new techniques that this research has developed. By using the basic slicing process and making changes to the steps in the process, two new techniques are presented that improve the print time and surface quality.
Curvature fluctuations on asymptotically de Sitter spacetimes via the semiclassical Einstein's equations
Creators: name: Dappiaggi, Claudio
name: Melati, Alberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It has been proposed recently to consider in the framework of cosmology an extension of the semiclassical Einstein's equations in which the Einstein tensor is considered as a random function. This paradigm yields a hierarchy of equations between the $n$-point functions of the quantum, normal ordered, stress energy-tensor and those associated to the stochastic Einstein tensor. Assuming that the matter content is a conformally coupled massive scalar field on de Sitter spacetime, this framework has been applied to compute the power spectrum of the quantum fluctuations and to show that it is almost scale-invariant. We test the robustness and the range of applicability of this proposal by applying it to a less idealized, but physically motivated, scenario, namely we consider Friedmann-Robertson-Walker spacetimes which behave only asymptotically in the past as a de Sitter spacetime. We show in particular that, under this new assumption and independently from any renormalization freedom, the power spectrum associated to scalar perturbations of the metric behaves consistently with an almost scale-invariant power spectrum.
description: 23 pages
Pteropus hypomelanus Temminck 1853
Creators: name: Voon-Ching Lim
name: Rosli Ramli
name: Bhassu, Subha
name: John-James Wilson
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Pteropus
Pteropus hypomelanus

description: Pteropus hypomelanus Temminck, 1853 Pteropus hypomelanus Temminck, 1853: 61; Ternate Island, North Molucca islands, INDO- NESIA (Collector unknown; Type unknown) [89]. Common English name: Island Flying-Fox Barcode Index Number: DNA barcodes recorded as P. hypomelanus are associated with the BIN, BOLD:AAZ4957, but there are no DNA barcodes from Peninsular Malaysia. IUCN status: Least Concern Recorded at: Johor: Pulau Pemanggil [23]; Terengganu: Pulau Redang [23], Pulau Perhentian [23]; Kedah: Pulau Paya [23]; Pahang: Pulau Tioman [23, 78; 90]. P. hypomelanus roosts close to shores on islands, under the fronds of coconut palms and branches of trees, and flies to mainland to feed [14, 23].
description: Published as part of Voon-Ching Lim, Rosli Ramli, Subha Bhassu & John-James Wilson, 2017, A checklist of the bats of Peninsular Malaysia and progress towards a DNA barcode reference library, pp. 1-65 in PLoS ONE 12 (7) on page 12, DOI: 10.1371/journal.pone.0179555, http://zenodo.org/record/4251352
description: {"references": ["89. Temminck CJ. Esquisses zoologiques sur la cote de Guine... le partie, les mammiferes vol 1. Mammiferes. Brill, Leiden; 1853. 256 pp.", "23. Medway L. The wild mammals of Malaya. London: Oxford University Press. 1969.", "14. Francis CM. A field guide to the mammals of South-East Asia. New Holland Publishers; 2008."]}
A Red Giants' Toy Story II: Understanding the Red-Giant Branch Bump
Creators: name: Bertolami, Marcelo M. Miller
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Red-Giant Branch Bump (RGBB) is one of the most noteworthy features in the red-giant luminosity function of stellar clusters. It is caused by the passage of the hydrogen-burning shell through the composition discontinuity left at the point of the deepest penetration by the convective envelope. When crossing the discontinuity the usual trend in increasing luminosity reverses for a short time before it increases again, causing a zig-zag in the evolutionary track. In spite of its apparent simplicity the actual physical reason behind the decrease in luminosity is not well understood and several different explanations have been offered. Here we use a recently proposed simple toy-model for the structure of low-mass red giants, together with previous results, to show beyond reasonable doubt that the change in luminosity at the RGBB can be traced to the change in the mean molecular weight of the layers on top of the burning shell. And that these changes happen on a nuclear timescale. The change in the effective mean molecular weight, as the burning shell approaches the discontinuity, causes a drop in the temperature of the burning shell which is attenuated by the consequent feedback contraction of the layers immediately below the burning shell. Our work shows that, when applied correctly, including the feedback on the structure of the core together with of the increase in the mass of the core, shell-source homology relations do a great quantitative job in explaining the properties of full evolutionary models at the RGBB.
description: Accepted for publication in ApJ. 5 Figures, 1 Table, 1 Appendix
Normalized solutions for Sobolev critical Schrödinger-Bopp-Podolsky systems
Creators: name: Li, Yuxin
name: Chang, Xiaojun
name: Feng, Zhaosheng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K92, 35B44, 35B40, 35R02

description: We study the Sobolev critical Schrödinger-Bopp-Podolsky system \begin{gather*} -Δu+ϕu=λu+μ|u|^{p-2}u+|u|^4u\quad \text{in }\mathbb{R}^3, -Δϕ+Δ^2ϕ=4πu^2\quad \text{in } \mathbb{R}^3, \end{gather*} under the mass constraint \[ \int_{\mathbb{R}^3}u^2\,dx=c \] for some prescribed $c>0$, where $20$ is a parameter, and $λ\in\mathbb{R}$ is a Lagrange multiplier. By developing a constraint minimizing approach, we show that the above system admits a local minimizer. Furthermore, we establish the existence of normalized ground state solutions.
description: 19 pages
Non-Stationary Spatial Modeling
Creators: name: Higdon, Dave
name: Swall, Jenise
name: Kern, John
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Standard geostatistical models assume stationarity and rely on a variogram model to account for the spatial dependence in the observed data. In some instances, this assumption that the spatial dependence structure is constant throughout the sampling region is clearly violated. We present a spatial model which allows the spatial dependence structure to vary as a function of location. Unlike previous formulations which do not account for uncertainty in the specification of this non-stationarity (eg. Sampson and Guttorp (1992)), we develop a hierarchical model which can incorporate this uncertainty in the resulting inference. The non-stationary spatial dependence is explained through a constructive "process-convolution" approach, which ensures that the resulting covariance structure is valid. We apply this method to an example in toxic waste remediation.
description: 8 pages, 4 figures
title: Διερεύνηση του φαινομένου της αντιστάθμισης στην εντατική εκτροφή της τσιπούρας (Sparus aurata L.)
titleType: AlternativeTitle
Creators: name: Πανταρίδης, Κ.
Publisher: name: University of Thessaly
Year: 2005
Subjects: subject: ΙΧΘΥΟΚΑΛΛΙΕΡΓΕΙΑ -- ΕΡΕΥΝΑ
subject: ΨΑΡΙΑ -- ΕΚΤΡΟΦΗ

description: Πολλοί οργανιοτμοί παρουσιάζουν ταχύτερη ανάπτυξη στη διάρκεια της ανάκαμψής τους μετά από μια περίοδο ολικής ή μερικής νηστείας απ’ ότι σε περιόδους συνεχούς διατροφής. Ο μηχανισμός που τείνει να επαναφέρει την ανάπτυξη των οργανισμών σε κανονική τροχιά ονομάζεται αύξηση αντιστάθμισης (Compensatory growth). To φαινόμενο αυτό έχει μελετηθεί σε εκτρεφόμενα ψάρια κυρίως σολομοειδή, ενώ λείπουν οι αναφορές για τα εκτρεφόμενα μεσογειακά είδη της τσιπούρας και του λαβρακιού. Στις εγκαταστάσεις του εργαστηρίου Υδατοκαλλιεργειών του Π.Θ., χρησιμοποιήθηκαν άτομα τσιπούρας μέσου αρχικού βάρους 110,9±20 g που παρέμειναν για 8 εβδομάδες σε κλειστό κύκλωμα μέσης θερμοκρασίας νερού 20,4 °C (max 22,5 °C & min 18,3 °C) για τη μελέτη του φαινομένου της αντιστάθμισης. Τα ψάρια χωρίστηκαν σε 4 μεταχειρίσεις και κάθε μεταχείριση διαμοιράστηκε σε τρεις δεξαμενές έτσι ώστε κάθε μεταχείριση να εκτελεσθεί εις τριπλούν (3 δεξαμενές / μεταχείριση). Οι μεταχειρίσεις που προέκυψαν ήταν: Μ των μαρτύρων με συνεχή καθημερινή διατροφή για οκτώ (8) εβδομάδες, Α με μία (1) εβδομάδα νηστεία και επτά (7) διατροφή, Β με δύο (2) εβδομάδες νηστεία και έξι (6) διατροφή, G με τρεις (3) εβδομάδες νηστεία και πέντε (5) διατροφή. Την περίοδο της νηστείας παρατηρήθηκε μείωση του βάρους των ψαριών και στη συνέχεια, με την εκ νέου χορήγηση τροφής, παρατηρήθηκε μερική αντιστάθμιση η οποία ήταν εντονότερη στη μεταχείριση με τη μεγαλύτερη περίοδο νηστείας. Με την ολοκλήρωση του πειράματος τα άτομα που ανήκαν στη μεταχείριση του μάρτυρα παρουσίασαν τη μεγαλύτερη αύξηση σωματικού βάρους, ακολουθούμενα από αυτά που ανήκαν στις μεταχειρίσεις A, Β και G, αντίστοιχα.
Real-Time Scheduling for Content Broadcasting in LTE
Creators: name: Malandrino, Francesco
name: Casetti, Claudio
name: Chiasserini, Carla-Fabiana
name: Zhou, Siyuan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Broadcasting capabilities are one of the most promising features of upcoming LTE-Advanced networks. However, the task of scheduling broadcasting sessions is far from trivial, since it affects the available resources of several contiguous cells as well as the amount of resources that can be devoted to unicast traffic. In this paper, we present a compact, convenient model for broadcasting in LTE, as well as a set of efficient algorithms to define broadcasting areas and to actually perform content scheduling. We study the performance of our algorithms in a realistic scenario, deriving interesting insights on the possible trade-offs between effectiveness and computational efficiency.
description: 6 pages; IEEE 22nd International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS 2014)
Molecular biology of gliomas: present and future challenges
Creators: name: (:Unkn) Unknown
Publisher: name: Universita' degli Studi di Salerno
Year: 2014
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Glioma
subject: IDH
subject: Metilation
subject: Therapy

description: Malignant brain tumours are one of the most relevant causes of morbidity and mortality across a wide range of individuals. Malignant glioma is the most common intra axial tumor in the adult. Many researches on this theme brought advances in the knowledge of gliomas biology and pathogenesis and to the development of new agents for targeted molecular therapy. Recent studies focused on either tumor metabolism analysis or epigenetic regulation in the pathogenesis or maintenance of brain tumors. This Review summarizes these developments analyzing molecular pathology and possible further developments for targeted therapies