cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Χρωμόνες: Βασικά υποστρώματα στη σύνθεση ετεροκυκλικών συστημάτων:
Creators: name: Τσιάρας, Βασίλειος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Χρωμόνες
Ετεροκυκλικό
Ισονιτρίλια
Chromones
Heterocyclic
Isocyanides

description: Οι χρωμόνες είναι φυσικά προϊόντα, των οποίων παράγωγα χρησιμοποιούνται στη φαρμακευτική και παρουσιάζουν επίσης αξιόλογη βιολογική δραστικότητα . Η βιολογική τους δραστικότητα αφορά, μεταξύ άλλων, στην καταπολέμηση του βρογχικού άσθματος, της αλλεργικής ρινίτιδας, φλεγμονών, ακόμα και καρκίνου. Οι ενώσεις αυτές πλεονεκτούν έναντι πολλών άλλων λόγω της μικρής τοξικότητας που εμφανίζουν στα θηλα¬στικά. Στόχος της παρούσας εργασίας ήταν η χρήση χρωμονών ως βασικά υποστρώματα στη σύνθεση ετεροκυκλικών συστημάτων, καθώς και η μελέτη των δομών των νέων ενώσεων που απομονώθηκαν. Πιο συγκεκριμένα, περιλαμβάνονται: i) Αντιδράσεις Aza-Baylis-Hillman αζωδικαρβο-ξυλικών διεστέρων με 3-φορμυλοχρωμόνες, ii) Σύνθεση βενζοφαινονών και πολυυποκατεστημένων ξανθονών, μέσω οργανοκαταλυτικών αντιδράσεων που περιλαμβάνουν 3-φορμυλοχρωμόνες και ακετυλενοδικαρβοξυλικούς διεστέρες και iii) Αντιδράσεις τριών συστατικών, 3-φορμυλοχρωμονών με αζωδικαρβοξυλικούς διεστέρες και ισονιτρίλια.
description: Chromones constitute the basic nucleus of a variety of natural products. Some of its derivatives have been used in medicinal chemistry, because of their biological properties, such as anti-ashtmatic, anti-allergic rhinitis, anti-inflammatory and anti-tumour activity. The advantage of these compounds is their low toxicity. In the present thesis, chromones have been used in order to prepare new heterocyclic compounds. The structure of the isolated products was studied extensively. More specific, this thesis includes: i) Functionalization of chromones through the aza-Baylis-Hillman type reaction. ii) Organocatalyzed reactions involving 3-formylchromones and acetylene-dicarboxylates. Efficient synthesis of functionalized benzophenones and polysubstituted xanthones and iii) Three component reactions between 3-formylchromones, azodicarboxylates and isocyanides.
Minimal Electroweak Baryogenesis via Domain Walls
Creators: name: Azzola, Jacopo
name: Matsedonskyi, Oleksii
name: Weiler, Andreas
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Standard Model extended by a real scalar singlet $S$ with an approximate $\mathbb{Z}_2$ symmetry offers a minimal framework for realizing electroweak baryogenesis (EWBG) during a first-order electroweak phase transition. In this work, we explore a novel mechanism where spontaneous $\mathbb{Z}_2$ breaking enables EWBG via domain walls separating two distinct phases of the $S$ field. These domain walls feature restored (or weakly broken) EW symmetry in their cores and sweep through space, generating the baryon asymmetry below the temperature of EW symmetry breaking. We identify the key conditions for the existence of EW-symmetric domain wall cores and analyze the dynamics required for wall propagation over sufficient spatial volumes. Additionally, we outline the CP-violating sources necessary for baryogenesis under different regimes of domain wall evolution. The parameter space accommodating this mechanism spans singlet masses from sub-eV to 15 GeV, accompanied by a non-vanishing mixing with the Higgs boson. Unlike the standard realization of EWBG in the minimal singlet-extended SM, which is notoriously difficult to test, our scenario can be probed by a wide range of existing and upcoming experiments, including fifth force searches, rare meson decays, and EDM measurements.
description: 31 pages, 7 figures
E+A Galaxies with Blue Cores: Active Galaxies in Transition
Creators: name: Yang, Yujin
name: Tremonti, Christy
name: Zabludoff, Ann
name: Zaritsky, Dennis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: HST ACS images reveal blue cores in four E+A, or post-starburst, galaxies. Follow-up spectroscopy shows that these cores have LINER spectra. The existence of LINERs, consistent with those in many elliptical galaxies, is yet one more piece of evidence that these post-merger, post-starburst, bulge-dominated galaxies will evolve into normal ellipticals. More interestingly, if LINERs are powered by low-luminosity AGN, their presence in these E+As suggests that any rapid growth phase of the central black hole ended in rough concert with the cessation of star formation. This result emphasizes the importance of E+As for exploring how the evolution of black holes and AGN may be tied to that of galactic bulges.
description: Accepted for publication in ApJ Letters, 5 pages, 3 figures
Shannonomyia (Shannonomyia) lipernes Alexander 1971
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Shannonomyia
Shannonomyia lipernes

description: Shannonomyia (Shannonomyia) lipernes Alexander, 1971
Original Genus: Shannonomyia; Holotype: male; Type Locality: Panama, Chiriqui Province, El Volcán; Description: Alexander, 1971i; Wing Reference: none; Hypopygium Reference: Alexander, 1971i; Panamanian Provinces: Chiriquí; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 21, DOI: 10.5281/zenodo.3727017
Structured Sampling for Robust Euclidean Distance Geometry
Creators: name: Kundu, Chandra
name: Tasissa, Abiy
name: Cai, HanQin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper addresses the problem of estimating the positions of points from distance measurements corrupted by sparse outliers. Specifically, we consider a setting with two types of nodes: anchor nodes, for which exact distances to each other are known, and target nodes, for which complete but corrupted distance measurements to the anchors are available. To tackle this problem, we propose a novel algorithm powered by Nyström method and robust principal component analysis. Our method is computationally efficient as it processes only a localized subset of the distance matrix and does not require distance measurements between target nodes. Empirical evaluations on synthetic datasets, designed to mimic sensor localization, and on molecular experiments, demonstrate that our algorithm achieves accurate recovery with a modest number of anchors, even in the presence of high levels of sparse outliers.
Neognophomyia heliconiae Alexander 1945
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Neognophomyia
Neognophomyia heliconiae

description: Neognophomyia heliconiae Alexander, 1945
Original Genus: Neognophomyia; Holotype: male; Type Locality: Panama, Panama Province, Canal Zone, Barro Colorado Island; Description: Alexander, 1945d; Wing Reference: none; Hypopygium Reference: none; Panamanian Provinces: Panama; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 16, DOI: 10.5281/zenodo.3727017
Phase behaviour of Lennard-Jones particles in two dimensions
Creators: name: Li, Yan-Wei
name: Ciamarra, Massimo Pica
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The phase diagram of the prototypical two-dimensional Lennard-Jones system, while extensively investigated, is still debated. In particular, there are controversial results in the literature as concern the existence of the hexatic phase and the melting scenario. Here, we study the phase behaviour of 2D LJ particles via large-scale numerical simulations. We demonstrate that at high temperature, when the attraction in the potential plays a minor role, melting occurs via a continuous solid-hexatic transition followed by a first-order hexatic-fluid transition. As the temperature decreases, the density range where the hexatic phase occurs shrinks so that at low-temperature melting occurs via a first-order liquid-solid transition. The temperature where the hexatic phase disappears is well above the liquid-gas critical temperature. The evolution of the density of topological defects confirms this scenario.
Ομαδική θεραπεία στην απεξάρτηση από ψυχοτρόπες ουσίες: το παράδειγμα της ομάδας στο θεραπευτικό πρόγραμμα του Πεθεά Αργώ:
Creators: name: Πανταζή, Στέλλα Σταμάτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Ομαδική θεραπεία
Ανοιχτό θεραπευτικό πρόγραμμα
Απεξάρτηση
Group therapy
Non-residential therapeutic program
Addiction treatment

description: Στο χώρο της απεξάρτησης η χρήση της ομάδας αποτελεί από τους επικρατέστερους τρόπους αντιμετώπισης της εξάρτησης. Σκοπός της παρούσας έρευνας είναι η καταγραφή των θεμάτων που αναδείχθηκαν σε ομάδα εξαρτημένων ατόμων του ανοιχτού θεραπευτικού προγράμματος του Πεθεά Αργώ. Με στόχο τη διερεύνηση του τρόπου με τον οποίο έρχεται η αλλαγή στην ιστορία του εξαρτημένου μέλους, χρησιμοποιήθηκαν ατομικά ημερολόγια μετά την λήξη της κάθε θεραπευτικής ομάδας του προγράμματος. Η ανάλυση των δεδομένων έγινε με τη μέθοδο της ανάλυσης περιεχομένου. Από την ανάλυση του υλικού προέκυψαν τρεις βασικές κατηγορίες οι οποίες αφορούν τη σχέση του εξαρτημένου ατόμου με εξαρτητικές ουσίες και συμπεριφορές, τη σχέση του ατόμου με τον κοινωνικό του περιβάλλον και τη σχέση του ατόμου με τον εαυτό. Οι δυο υποκατηγορίες που προέκυψαν αφορούν τη δυναμική της ομάδας και τις προτάσεις των μελών εντός της ομάδας.. Εν κατακλείδι, η ομάδα βοηθά το εξαρτημένο μέλος να συνειδητοποιήσει τα θέματα που το αφορούν και του προσφέρει την κατάλληλη ώθηση για αλλαγή. Περαιτέρω έρευνα χρειάζεται στο τομέα της αξιολόγησης των ομαδικών παρεμβάσεων.
description: In the field of addiction research group therapy is widely used as a method of treating drug addiction. This master thesis aims at documenting the issues which arose in the groups of the non-residential therapeutic program “ARGO”. In order to explore the ways in which addicted individuals manage to change their life story, personal records of the group sessions were kept. The research method used was the method of content analysis. The results highlight the relationship of the individual to the addictive substances and behaviors, to one’s social background and to one’s self. In addition, further findings show the significance of the group dynamics and the suggestions made by the group members themselves. In conclusion, the group not only helps the addicted members to realize their fundamental problems, but also encourages them to change. Further research is considered necessary in the field of group therapy interventions.
Gradient-prolongation commutativity and graph theory
Creators: name: Musy, François
name: Nicolas, Laurent
name: Perrussel, Ronan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This Note gives conditions that must be imposed to algebraic multilevel discretizations involving at the same time nodal and edge elements so that a gradient-prolongation commutativity condition will be satisfied; this condition is very important, since it characterizes the gradients of coarse nodal functions in the coarse edge function space. They will be expressed using graph theory and they provide techniques to compute approximation bases at each level.
description: 6 pages
La consistenza del modello dell’amministrazione ‘invisibile’
nell’età della tecnificazione:
dalla formazione delle decisioni alla responsabilità per le decisioni
Creators: name: D'Angelosante, Melania
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: IUS/10 Diritto amministrativo

description: Il contributo ha per oggetto: a) il ruolo della tecnificazione dell’amministrazione nel processo di
formazione delle decisioni amministrative, in specie quelle connotate da discrezionalità, pura e tecnica; b) il
riflesso di questo ruolo sulla responsabilità dell’amministrazione e dei suoi dipendenti, nelle relazioni sia
esterne sia interne.
FIRST winged radio galaxies with X and Z symmetry
Creators: name: Bera, Soumen
name: Pal, Sabyasachi
name: Sasmal, Tapan K.
name: Mondal, Soumen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: X-shaped radio galaxies are a subclass of radio sources that exhibit a pair of secondary low surface brightness radio lobes oriented at an angle to the primary high surface brightness lobes. Sometimes, the secondary low brightened lobes emerge from the edges of the primary high brightened lobes and form a Z-symmetric morphology. We present a systematical search result for X-shaped radio galaxies (XRGs) and Z-shaped radio galaxies (ZRGs) from the VLA Faint Images of the Radio Sky at Twenty-Centimeters (VLA FIRST) Survey at 1.4 GHz. Our search yields a total of 296 number of radio sources, out of which 161 are XRGs and 135 are ZRGs. We have also made optical identification of these sources from the different available literature. J1124+4325 and J1319+0502 are the farthest known XRG and ZRG, respectively. We have estimated spectral index and radio luminosity of these radio sources and made a comparative study with previously detected XRGs and ZRGs. The average value of luminosities for XRGs is higher than that of ZRGs. With the help of a large sample size of the newly discovered XRGs and ZRGs, various statistical properties of these sources are studied. Out of 161 XRGs presented in the current paper, 70% (113) are FR II radio galaxies and 13% (20) are FR I radio galaxies. For 28 XRGs, the morphology is complex and could not be classified. For XRGs, the statistical studies are done on the angle between the major axis and minor axis and the relative size of the major and minor axes. For the ZRGs a statistical study is done on the angular size.
description: Published in ApJSS
Μεταγωγείς Πλασμονικής Τεχνολογίας Για Ευρυζωνικές Διασυνδέσεις Υπολογιστικών Συστημάτων:
Creators: name: Λύρας, Φίλιππος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Πλασμονική
Δακτύλιοι Συντονισμού
DLSPP
Plasmonics
Ring Resonators

description: Τα τελευταία χρόνια, μεγάλο μέρος της ερευνητικής δραστηριότητας στον τομέα της φωτονικής στοχεύεται στη φωτονική πυριτίου, ή αλλιώς Silicon Photonics. Διακαή πόθο στον τομέα αποτελεί η αποτελεσματική υπέρβαση του κατώτατου ορίου στις φυσικές διαστάσεις, που επιβάλλεται από το περιθλαστικό όριο, δηλαδή η αδυναμία διάδοσης του φωτός σε διαστάσεις μικρότερες του μήκους κύματός του. Γνωστά ήδη από την δεκαετία του ’50 - αν και στο επίκεντρο του ερευνητικού ενδιαφέροντος μόνο τα τελευταία δέκα χρόνια - τα επιφανειακά πλασμόνια (surface plasmons, SP) φαίνεται να μπορούν να δώσουν την λύση στο πρόβλημα αυτό. Το παράδοξο γύρω από την φύση των plasmons επιτρέπει την υπέρβαση του προαναφερθέντος ορίου και την σχεδίαση πρακτικών διατάξεων βασισμένες στα πλασμόνια – μια επιστήμη που τελικά βαφτίστηκε plasmonics. Η παρούσα διπλωματική εργασία ασχολείται με κάποιες από τις τελευταίες εξελίξεις στον χώρο, την ανάπτυξη αρχιτεκτονικών για διακοπτικά στοιχεία βασισμένα σε DLSPP κυματοδηγούς (Dielectric-loaded Surface Plasmon Polariton waveguides) και δακτυλίους συντονισμού προς χρήση σε τηλεπικοινωνιακές συχνότητες.
description: In recent years, a significant part of research in the field of photonics is aimed at Silicon Photonics. Researchers’ most ardent desire lies in effectively overcoming the lowest boundary in physical dimensions, dictated by the diffraction limit, which relates to light being unable to propagate in dimensions much smaller than its own wavelength. Though they are known since the 50’s, Surface Plasmons (SPs) have only recently occupied a significant spot in photonics research, and may very well become the much-wanted breakthrough. The weirdness of their nature allows for the effective transgression of the said limit, and the construction of smaller, reliable elements based on surface plasmons – a field that has come to be named plasmonics. This thesis is about some of the latest developements in the area, the employment of switching element architectures based on DLPSPP (Dielectric-loaded Surface Plasmon Polariton) waveguides and microring resonators, for use in telecom frequencies.
Τα χειρόγραφα βυζαντινής μουσικής στην Αλβανία:
Creators: name: Kumbe, Meri Kristaq (Κούμπε, Μαίρη)
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Χειρόγραφα
Αλβανία
Βυζαντινή μουσική
Manuscripts
Albania
Byzantine music

description: Τα μουσικά χειρόγραφα της Αλβανίας, παρά το ολιγάριθμο, είναι σημαντικοί για την αξία τους και την συμβολή τους. Σκοπός της διπλωματικής εργασίας με τίτλο «Τα βυζαντινά χειρόγραφα της Αλβανίας» αποτελούσε η παρουσίαση των μουσικών χειρογράφων της Αλβανίας, μέσω αναλυτικής καταλογογράφησης. Η εν λόγω εργασία, οργανώνεται σε δύο μέρη. Στο πρώτο μέρος της, παρουσιάζονται όσα έχουν δημοσιευτεί (άρθρα και παλαιοί κατάλογοι) για τα μουσικά χειρόγραφα της Αλβανίας από το 1850 και μετά. Στο δεύτερο μέρος, δίνεται η αναλυτική καταλογογράφηση των μουσικών χειρογράφων, παρουσιάζοντας έτσι συνολικά τα μουσικά χειρόγραφα που υπήρχαν και υπάρχουν στην Αλβανία.
description: The musical manuscripts of Albania are very important for their value and contribution that they give being part of the international list of the musical manuscripts. The aim of the present thesis under the title “The manuscripts of the byzantine music in Albania”, was to present their detailed catalogue. The first part of the thesis presents the editions and articles regarding manuscripts in Albania, published from 1850 until today. In the second part of the thesis is given the detailed catalogue of the musical manuscripts. In this thesis we presented the musical manuscripts that existed and exist today in Albania.
Gas-induced selective re-orientation of Au-Cu nanoparticles on TiO 2 (110)
Creators: name: Wilson, Axel
name: Bailly, Aude
name: Bernard, Romain
name: Borensztein, Yves
name: Coati, Alessandro
name: Croset, Bernard
name: Cruguel, Hervé
name: Naitabdi, Ahmed
name: Silly, Mathieu
name: Saint-Lager, Marie-Claire
name: Vlad, Alina
name: Witkowski, Nadine
name: Garreau, Yves
name: Prévot, Geoffroy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Au-Cu bimetallic nanoparticles (NPs) grown on TiO 2 (110) have been followed in-situ using grazing incidence x-ray diffraction and x-ray photoemission spectroscopy from their synthesis to their exposure to a CO/O 2 mixture at low pressure (P < 10-5 mbar) and at different temperatures (300 K-470 K). As-prepared samples are composed of two types of alloyed NPs: randomly oriented and
Molophilus (Molophilus) sarotes Alexander 1969
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Molophilus
Molophilus sarotes

description: Molophilus (Molophilus) sarotes Alexander, 1969
Original Genus: Molophilus; Holotype: male; Type Locality: Panama, Chiriqui Province, El Volcán; Description: Alexander, 1969n; Wing Reference: none; Hypopygium Reference: Alexander, 1969n; Panamanian Provinces: Chiriquí; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 16, DOI: 10.5281/zenodo.3727017
Silicon Flexes Muscles: Giant Electrochemical Actuation in a Nanoporous Silicon-Polypyrrole Hybrid Material
Creators: name: Brinker, Manuel
name: Dittrich, Guido
name: Richert, Claudia
name: Lakner, Pirmin
name: Krekeler, Tobias
name: Keller, Thomas F.
name: Huber, Norbert
name: Huber, Patrick
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Applied Physics (physics.app-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The absence of piezoelectricity in silicon makes direct electro-mechanical applications of this mainstream semiconductor impossible. Integrated electrical control of the silicon mechanics, however, would open up new perspectives for on-chip actuorics. Here, we combine wafer-scale nanoporosity in single-crystalline silicon with polymerization of an artificial muscle material inside pore space to synthesize a composite that shows macroscopic electrostrain in aqueous electrolyte. The voltage-strain coupling is 3 orders of magnitude larger than the best-performing ceramics in terms of piezoelectric actuation. We trace this huge electroactuation to the concerted action of 100 billions of nanopores per square centimetre cross-section and to potential-dependent pressures of up to 150 atmospheres at the single-pore scale. The exceptionally small operation voltages (0.4-0.9 V) along with the sustainable and biocompatible base materials make this hybrid promising for bio-actuator applications.
description: Supplementary data as ancillary file available
Molophilus (Molophilus) neanerastus Alexander 1969
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Molophilus
Molophilus neanerastus

description: Molophilus (Molophilus) neanerastus Alexander, 1969
Original Genus: Molophilus; Holotype: male; Type Locality: Panama, Chiriqui Province, El Volcán; Description: Alexander, 1969n; Wing Reference: none; Hypopygium Reference: Alexander, 1969n; Panamanian Provinces: Chiriquí; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 16, DOI: 10.5281/zenodo.3727017
The ground-state of General Relativity, Topological Theories and Dark Matter
Creators: name: Banados, Maximo
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We suggest a limit of Einstein equations incorporating the state $g_{μν}=0$ as a solution. The large scale behavior of this theory has interesting properties. For a spherical source, the velocity profile for circular motions is of the form observed in galaxies (approximately flat). For FRW cosmologies, the Friedman equation contains an additional contribution in the matter sector.
description: More clarifications on the interpretation of the limits. Shorter version. 4 pages, two column, no figures
Drift instabilities in the solar corona within the multi-fluid description
Creators: name: Mecheri, R.
name: Marsch, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent observations revealed that the solar atmosphere is highly structured in density, temperature and magnetic field. The presence of these gradients may lead to the appearance of currents in the plasma, which in the weakly collisional corona can constitute sources of free energy for driving micro-instabilities. Such instabilities are very important since they represent a possible source of ion-cyclotron waves which have been conjectured to play a prominent role in coronal heating, but whose solar origin remains unclear. Considering a density stratification transverse to the magnetic field, this paper aims at studying the possible occurrence of gradient-induced plasma micro-instabilities under typical conditions of coronal holes. Taking into account the WKB (Wentzel-Kramers-Brillouin) approximation, we perform a Fourier plane waves analysis using the collisionless multi-fluid model. By neglecting the electron inertia, this model allows us to take into account ion-cyclotron wave effects that are absent from the one-fluid model of magnetohydrodynamics (MHD). Realistic models of density and temperature, as well as a 2-D analytical magnetic-field model, are used to define the background plasma in the open-field funnel in a polar coronal hole. The ray-tracing theory is used to compute the ray path of the unstable waves, as well as the evolution of their growth rates during the propagation. We demonstrate that in typical coronal hole conditions, and when assuming typical transverse density length scales taken from radio observations, the current generated by a relative electron-ion drift provides enough free energy for driving the mode unstable. This instability results from a coupling between oppositely propagating slow-mode waves.
description: 9 pages, 7 figures, accepted for publication in Astronomy & Astrophysics
Magnetotransport in overdoped La$_{2-x}$Sr$_x$CuO$_4$: a Fermi liquid approach
Creators: name: Mao, Rui-Ying
name: Wang, Da
name: Wu, Congjun
name: Wang, Qiang-Hua
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, several experiments on La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) challenged the Fermi liquid picture for overdoped cuprates, and stimulated intensive debates [1]. In this work, we study the magnetotransport phenomena in such systems based on the Fermi liquid assumption. The Hall coefficient $R_H$ and magnetoresistivity $ρ_{xx}$ are investigated near the van Hove singularity $x_{\tiny\text{VHS}}\approx0.2$ across which the Fermi surface topology changes from hole- to electron-like. Our main findings are: (1) $R_H$ depends on the magnetic field $B$ and drops from positive to negative values with increasing $B$ in the doping regime $x_{\tiny\text{VHS}}
description: 6 pages, 4 figures
Molophilus (Molophilus) chiriquiensis Alexander 1934
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Molophilus
Molophilus chiriquiensis

description: Molophilus (Molophilus) chiriquiensis Alexander, 1934
Original Genus: Molophilus; Holotype: male; Type Locality: Panama, Chiriqui Province, Finca Lerida; Description: Alexander, 1934d; Wing Reference: none; Hypopygium Reference: none; Panamanian Provinces: Chiriquí; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 16, DOI: 10.5281/zenodo.3727017
Virtual Makeup Studio
Creators: name: Afrin O M, Mr.F.RichardsinghPage(s): 1748-1757
Publisher: name: Zenodo
Year: 2025

description: The rise of nuclear families has resulted in less care for the health of the elderly living in privateresidences. Because of this, they are forced to either abandon their lives of solitude or be admitted to anelderly care facility. This means they have to take care of themselves in every way, including taking theirmedication and doing their regular tasks. A fall at home or in a care facility could result from this. Serioushealth problems or even death could result from a fall for which assistance is unavailable. The good causeof assisting the elderly is always bolstered by the application of image processing to detect these falls.Using the idea of a convolutional neural network in image processing, the suggested system offers areasonable and cost-effective solution to this problem. Frame by frame, the suggested model keeps an eyeon the solitary person to make sure they don't fall. The YOLO V8 is being used to assess the region ofinterest and pixel displacement in data segmentation in order to measure the fall. In addition, the modelsends a text message to the doctor, closest relative, and neighbor in an effort to rescue a life.
Cosmic distributions of stellar tidal disruptions by massive black holes at galactic centers
Creators: name: Chen, Yunfeng
name: Yu, Qingjuan
name: Lu, Youjun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stars can be consumed (either tidally disrupted or swallowed whole) by massive black holes (MBHs) at galactic centers when they move into the vicinity of the MBHs. In this study, we investigate the rates of stellar consumption by central MBHs and their cosmic distributions, including the effects of triaxial galaxy shapes in enhancing the reservoir of low-angular-momentum stars and incorporating realistic galaxy distributions. We find that the enhancement in the stellar consumption rates due to triaxial galaxy shapes can be significant, by a factor of ~3 for MBH mass $M_{\rm BH}\sim10^5$-$10^6$Msun and up to more than one order of magnitude for $M_{\rm BH}\gtrsim10^8$Msun. Only for $M_{\rm BH}\lesssim10^7$Msun are the stellar consumption rates significantly higher in galaxies with steeper inner surface brightness profiles. The average (per galaxy) stellar consumption rates correlate with central MBH masses positively for $M_{\rm BH}\gtrsim10^7$Msun and negatively for $M_{\rm BH}\lesssim10^7$Msun. The volumetric stellar tidal disruption rates are ~$3\times10^{-5}$/yr/Mpc$^3$ for MBHs in the mass range of $10^5$-$10^8$Msun at z=0; and the volumetric stellar consumption rates by MBHs with higher masses are ~$10^{-6}$/yr/Mpc$^3$, which can be the stellar tidal disruption rate if the high-mass BHs are extremely spinning Kerr BHs or the rate of being swallowed if those BHs are Schwarzschild ones. The volumetric stellar consumption rates decrease with increasing redshift, and the decrease is relatively mild for $M_{\rm BH}\sim10^5$-$10^7$Msun and stronger for higher $M_{\rm BH}$. Most of the stellar tidal disruption events (TDEs) at z=0 occur in galaxies with mass $M_{\rm gal}\lesssim10^{11}$Msun, and about 1%-2% of the TDEs can occur in high-mass galaxies with $M_{\rm gal}\gtrsim10^{11}$Msun.
description: 20 pages, 9 figures
Working Paper_ERICC Evidence Review in Nigeria_The evidence for improving education in conflict-affected areas of Nigeria and existing gaps
Creators: name: ERICC Consortium
name: Mishra, Anjini
name: Oyinloye, Bukola
name: Mkwananzi, Faith
name: Watts, Michael
name: Adesina, Adedoyin
name: Akogun, Oladele
name: Salmon-Letelier, Marlana
name: Diazgranados Ferrans, Silvia
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390201
subject: Education policy
classificationCode: 390407
subject: Inclusive education

description: This review sets out to (i) identify and synthesise the evidence base of education programmes in conflict-affected areas of Nigeria in order to generate a rigorous understanding of the circumstances under which education is delivered; and (ii) identify evidence gaps concerning access, quality and continuity of education, and the interventions that aim to improve education outcomes. The review was conducted as part of the Education Research in Conflict and Protracted Crisis (ERICC) programme. The literature review drew on peer-reviewed academic papers and programme reports, which were categorised according to the ERICC conceptual and research framework according to the research questions and programmes they addressed. The findings show that, although there is promising evidence of interventions which can improve academic outcomes of out-of-school children in some areas, particularly around teaching and learning, there remain significant evidence gaps related to: (i) the state of policies, budgets and data systems; (ii) the state of coherence in the education system and the factors that enable or constrain coherence; (iii) policy-level interventions which can alignment, accountability and adaptability of the education system; (iv) interventions which can improve access, quality and continuity of children's education in conflict affected areas in cost-effective ways; (v) the status of children’s academic learning, social emotional development, mental health and well-being, and achievement and equity for different subgroups; and (vi) system strengthening education interventions which can improve children's achievement and equity in cost-effective ways. Findings were used to inform the generation of to develop the ERICC Nigeria programme through consultation with key government and non-government stakeholders.
Gonomyia (Paralipophleps) gladiator Alexander 1919
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Gonomyia
Gonomyia gladiator

description: Gonomyia (Paralipophleps) gladiator Alexander, 1919
Original Genus: Gonomyia; Holotype: male; Type Locality: Panama, Panama Province, Real de Santa Maria; Description: Alexander, 1919k; Wing Reference: Alexander, 1919k; Hypopygium Reference: none; Panamanian Provinces: Darien, Panama; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 16, DOI: 10.5281/zenodo.3727017
Η συναγωγή σιωπηρών διοικητικών πράξεων εκ των παραλείψεων της Διοικήσεως στο ελληνικό διοικητικό δίκαιο:
Creators: name: Ρουσούδη, Γεωργία Παντελή
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: παράλειψη
άρνηση
αδειοδότηση
failure
inactivity
negative content

description: Αντικείμενο της εργασίας μου αποτέλεσε η κατηγορία των σιωπηρών διοικητικών πράξεων αρνητικού αλλά και θετικού περιεχομένου. Στο πρώτο μέρος της εργασίας μου παρουσίασα αναλυτικά τις προϋποθέσεις συναγωγής της παράλειψης οφειλόμενης νόμιμης ενέργειας, της κυριότερης μορφής σιωπηρής διοικητικής πράξης αρνητικού περιεχομένου, προσπαθώντας να καταδείξω ότι πρόκειται για ένα δικονομικό τέχνασμα για την παροχή δικαστικής προστασίας. Στο δε δεύτερο μέρος ασχολήθηκα με τις περιπτώσεις που από την αδράνεια της διοικήσεως προκύπτει η ευνοϊκή ρύθμιση για το διοικούμενο παραθέτοντας τις νομικές αξίες που εξυπηρετεί το νομοθετικό αυτό κατασκεύασμα αλλά και τους κινδύνους από μία αυτόματη ρύθμιση εκ του νόμου.
description: The subject of the essay is the implied administrative acts with either positive or negative content. In the first part of the essay, I presented under which conditions someone can deduct the failure to obligatory legal act -the main form of administrative act with negative content- as I was trying to prove that these administrative acts consist a procedural artifice, in order for the legal protection to be provided. In the second part, I dealt with the cases, which the administrative inactivity results the positive regulation for the citizen, referring the legal merits, which serve this legislative construction as well as the risks of an automatic laying down by statute.
Gonomyia (Leiponeura) spinolateralis Alexander 1971
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Gonomyia
Gonomyia spinolateralis

description: Gonomyia (Leiponeura) spinolateralis Alexander, 1971
Original Genus: Gonomyia; Holotype: male; Type Locality: Panama, Panama Province, Fort Clayton; Description: Alexander, 1971b; Wing Reference: none; Hypopygium Reference: none; Panamanian Provinces: Panama; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 16, DOI: 10.5281/zenodo.3727017
Search for the decay B0 --> K0_S K0_S K0_L
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the first search for the decay B0 --> K0_S K0_S K0_L using a data sample of 232 million B Bbar pairs. We find no statistically significant evidence for the non-resonant component of this decay. Our central value for the branching fraction, assuming the true Dalitz distribution is uniform and excluding the phi resonance, is B(B0 --> K0_S K0_S K0_L) = (2.4 +2.7 -2.5 +/- 0.6) x 10^{-6} where the errors are statistical and systematic, respectively. We set a single-sided Bayesian upper limit of B(B0 --> K0_S K0_S K0_L) < 7.4 x 10^{-6} at 90% confidence level using a uniform prior probability for physical values. Assuming the worst-case true Dalitz distribution, where the signal is entirely in the region of lowest efficiency, the 90% confidence level upper limit is B(B0 --> K0_S K0_S K0_L) < 16 x 10^{-6}.
description: Published version
Gonomyia (Leiponeura) scimitar Alexander 1914
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Gonomyia
Gonomyia scimitar

description: Gonomyia (Leiponeura) scimitar Alexander, 1914
Original Genus: Gonomyia; Holotype: male; Type Locality: Guyana, Bartica; Description: Alexander, 1914g; Wing Reference: none; Hypopygium Reference: none; Panamanian Provinces: undetermined; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 15, DOI: 10.5281/zenodo.3727017
Mixed finite element methods for linear elasticity with weakly imposed symmetry
Creators: name: Arnold, Douglas N.
name: Falk, Richard S.
name: Winther, Ragnar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N30, 74S05

description: In this paper, we construct new finite element methods for the approximation of the equations of linear elasticity in three space dimensions that produce direct approximations to both stresses and displacements. The methods are based on a modified form of the Hellinger--Reissner variational principle that only weakly imposes the symmetry condition on the stresses. Although this approach has been previously used by a number of authors, a key new ingredient here is a constructive derivation of the elasticity complex starting from the de Rham complex. By mimicking this construction in the discrete case, we derive new mixed finite elements for elasticity in a systematic manner from known discretizations of the de Rham complex. These elements appear to be simpler than the ones previously derived. For example, we construct stable discretizations which use only piecewise linear elements to approximate the stress field and piecewise constant functions to approximate the displacement field.
description: to appear in Mathematics of Computation
Gonomyia (Leiponeura) gillottae Alexander 1929
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Gonomyia
Gonomyia gillottae

description: Gonomyia (Leiponeura) gillottae Alexander, 1929
Original Genus: Gonomyia; Holotype: male; Type Locality: Costa Rica, near Cartago; Description: Alexander, 1929b; Wing Reference: none; Hypopygium Reference: none; Panamanian Provinces: undetermined; Regional Distribution: Costa Rica, Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 15, DOI: 10.5281/zenodo.3727017
Gonomyia (Gonomyia) unicolor Alexander 1913
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Gonomyia
Gonomyia unicolor

description: Gonomyia (Gonomyia) unicolor Alexander, 1913
Original Genus: Gonomyia; Holotype: female; Type Locality: Guatemala, Aguna; Description: Alexander, 1913d; Wing Reference: Alexander, 1913d; Hypopygium Reference: Alexander, 1979a; Panamanian Provinces: undetermined; Regional Distribution: El Salvador, Guatemala, Mexico, Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 15, DOI: 10.5281/zenodo.3727017
Floquet higher order topological insulator in a periodically driven bipartite lattice
Creators: name: Zhu, Weiwei
name: Chong, Y. D.
name: Gong, Jiangbin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Floquet higher order topological insulators (FHOTIs) are a novel topological phase that can occur in periodically driven lattices. An appropriate experimental platform to realize FHOTIs has not yet been identified. We introduce a periodically-driven bipartite (two-band) system that hosts FHOTI phases, and predict that this lattice can be realized in experimentally-realistic optical waveguide arrays, similar to those previously used to study anomalous Floquet insulators. The model exhibits interesting phase transitions from first-order to second-order topological matter by tuning a coupling strength parameter, without breaking lattice symmetry. In the FHOTI phase, the lattice hosts corner modes at eigenphase $0$ or $π$, which are robust against disorder in the individual couplings.
description: 5+ pages for the main text, plus 7 pages for the Supplementary Materials, to be submitted to Phys. Rev. B
Epiphragma (Epiphragma) genuale Alexander 1934
Creators: name: Armitage, Brian J.
name: Ríos González, Tomás A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Epiphragma
Epiphragma genuale

description: Epiphragma (Epiphragma) genuale Alexander, 1934
Original Genus: Epiphragma; Holotype: male; Type Locality: Panama, Chiriqui Province, Finca Lerida; Description: Alexander, 1934d; Wing Reference: none; Hypopygium Reference: none; Panamanian Provinces: Chiriquí; Regional Distribution: Panama.
description: Published as part of Armitage, Brian J. & Ríos González, Tomás A., 2019, The Diptera of Panama. I. Annotated catalog of the Tipulomorpha of Panama, pp. 1-30 in Insecta Mundi 712 on page 18, DOI: 10.5281/zenodo.3727017
Χρονοδρομολόγηση εργασιών διαφορετικών προτεραιοτήτων σε κατανεμημένα συστήματα: προσομοίωση και ανάλυση της απόδοσης
Creators: name: Δημητρούσης, Ιωάννης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Χρονοδρομολόγηση
Προσομοίωση
Κατανεμημένα Συστήματα
Scheduling
Simulation
Distributed Systems

description: Η παρούσα εργασία έχει στόχο την εκτίμηση της απόδοσης ενός κατανεμημένου συστήματος. Στο σύστημα που μοντελοποιήσαμε εισέρχονται διεργασίες που τις διαχωρίζουμε με βάση την βαρύτητα τους σε απλές και κρίσιμες. Στόχος είναι οι κρίσιμες διεργασίες να έχουν προτεραιότητα και να εξυπηρετούνται όσο το δυνατόν γρηγορότερα. Αντίστοιχα και οι επεξεργαστές του μοντέλου μας χωρίζονται σε 2 κατηγορίες, στους υψηλής απόδοσης (High Performance) που όμως έχουν μεγάλη ενεργειακή κατανάλωση, και στους ενεργειακά βέλτιστους (Energy Efficient) που έχουν χαμηλότερη κατανάλωση αλλά υστερούν σε ταχύτητα. Μετά τα εισαγωγικά κεφάλαια όπου δίνεται ένα θεωρητικό υπόβαθρο για βασικές έννοιες όπως προσομοίωση, μοντέλο, grid, αλγόριθμοι δρομολόγησης κ.α., γίνεται μια παρουσίαση των 2 πολιτικών δρομολόγησης που υλοποιήθηκαν. Ζητούμενο είναι η αξιολόγηση των πολιτικών δρομολόγησης των διεργασιών με βάση διάφορες μετρικές απόδοσης και λαμβάνοντας υπόψη την προτεραιότητα των διεργασιών και την κατανάλωση ενέργειας του συστήματος.
description: This thesis studies the performance of a distributed system. In the system that we have modeled various jobs are arriving, which can be characterized as simple or critical according to their level of urgency. Our aim is to give critical jobs a higher priority level and complete them as soon as possible. Respectively, the processors of our model are divided in two classes. We have High Performance (HP) processors which consume a lot of energy and Energy Efficient (EE) processors which are lacking in speed. In the introductory chapters of this thesis we try to establish a theoretical foundation for basic concepts such as simulation, model, grid, routing algorithms etc. After that we present the 2 rooting policies that were implemented in our model. Our goal is to evaluate them based on various performance metrics but also taking into account the priority levels of the jobs and the total energy consumption of our system.
Electron delocalization in bilayer graphene induced by an electric field
Creators: name: Koshino, Mikito
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electronic localization is numerically studied in disordered bilayer graphene with an electric-field induced energy gap. Bilayer graphene is a zero-gap semiconductor, in which an energy gap can be opened and controlled by an external electric field perpendicular to the layer plane. We found that, in the smooth disorder potential not mixing the states in different valleys (K and K' points), the gap opening causes a phase transition at which the electronic localization length diverges. We show that this can be interpreted as the integer quantum Hall transition at each single valley, even though the magnetic field is absent.
description: 6 pages, 6 figures