cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Threshold Current of Domain Wall Motion under Extrinsic Pinning, $β$-Term and Non-Adiabaticity
Creators: name: Tatara, Gen
name: Takayama, Toshihiko
name: Kohno, Hiroshi
name: Shibata, Junya
name: Nakatani, Yoshinobu
name: Fukuyama, Hidetoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Threshold current of domain wall motion under spin-polarized electric current in ferromagnets is theoretically studied based on the equation of motion of a wall in terms of collective coordinates. Effects of non-adiabaticity and a so-called $β$-term in Landau-Lifshitz equation, which are described by the same term in the equation of motion of a wall, are taken into account as well as extrinsic pinning. It is demonstrated that there are four different regimes characterized by different dependence of threshold on extrinsic pinning, hard-axis magnetic anisotropy, non-adiabaticity and $β$.
description: submitted to J. Phys. Soc. Jpn
Diffuse Light in Hickson Compact Groups: The Dynamically Young System HCG 44
Creators: name: Aguerri, J. A. L.
name: Castro-Rodriguez, N.
name: Napolitano, N.
name: Arnaboldi, M.
name: Gerhard, O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Compact groups are associations of a few galaxies in which the environment plays an important role in galaxy evolution. The low group velocity dispersion favors tidal interactions and mergers, which may bring stars from galaxies to the diffuse intragroup light. Numerical simulations of galaxy clusters in hierarchical cosmologies show that the amount of the diffuse light increases with the dynamical evolution of the cluster. We search for diffuse light in the galaxy group HCG 44 in order to determine its luminosity and luminosity fraction. Combining with literature data, we aim to constrain the dynamical status of Hickson compact groups. We use Intra Group planetary nebulae (IGPNe) as tracers of diffuse light. These are detected by the so-called on band-off band technique. We found 12 emission line objects in HCG 44, none of them associated with the galaxies of the group. 6/12 emission line objects are consistent with being IGPNe in HCG 44, but are also consistent with being Ly$α$ background galaxies. Thus we derive an upper limit to the diffuse light fraction in HCG 44 of 4.7%. We find a correlation between the fraction of elliptical galaxies and the amount of diffuse light in Hickson compact groups. Those with large fraction of diffuse light are those with large fractions in number and luminosity of E/S0 galaxies. We propose an evolutionary sequence for Hickson compact groups in which the amount of diffuse light increases with the dynamical evolution of the group.
description: 9 pages, 4 figures, accepted for publication at A&A
Quantum electrodynamics in anisotropic and tilted Dirac photonic lattices
Creators: name: Redondo-Yuste, J.
name: de Paz, M. Blanco
name: Huidobro, P. A.
name: González-Tudela, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the most striking predictions of quantum electrodynamics is that vacuum fluctuations of the electromagnetic field can lead to spontaneous emission of atoms as well as photon-mediated interactions among them. Since these processes strongly depend on the nature of the photonic bath, a current burgeoning field is the study of their modification in the presence of photons with non-trivial energy dispersions, e.g., the ones confined in photonic crystals. A remarkable example is the case of isotropic Dirac-photons, which has been recently shown to lead to non-exponential spontaneous emission as well as dissipation-less long-range emitter interactions. In this work, we show how to further tune these processes by considering anisotropic Dirac cone dispersions, which include tilted, semi-Dirac, and the recently discovered type II and III Dirac points. In particular, we show how by changing the anisotropy of the lattice one can change both the spatial shape of the interactions as well as its coherent/incoherent nature. Finally, we discuss a possible implementation where these energy dispersions can be engineered and interfaced with quantum emitters based on subwavelength atomic arrays.
description: 16 pages, 10 figures
title: The Digital Avatar on a Blockchain: E-Identity, Anonymity and Human Dignity
Creators: name: Schreier, Nora
name: Renwick, Robin
name: Ehrke-Rabel, Tina
Publisher: name: Universität Graz
Year: 2021

description: In order to comply with specific regulations (eIDAS, Payment Services Directive, Anti-Money Laundering Directive) and reduce risk profiles, financial service providers increasingly collect large amounts of information from their customers. The increasing opportunities and technical means for data collection afforded from digitalisation raise legal concerns related to proportionality, necessity, and data minimization. However, the concerns go beyond just GDPR compliance and legislative balance, as distinct architectures and technological deployments potentially impact rights, freedoms, and ethics. This paper will address the issue by examining aspects of digital identity, especially those that have proposed the use of a permissioned distributed ledger or blockchain as architecture for know your customer and onboarding evidential frameworks, using specific hashing schemes that derive unique identifiers from the combination of specific personal data points. Evidence is appended to a data structure, for the purpose of auditing and/or record keeping, potentially ensuring an immutable record of events is maintained. After elaborating on the notion of identity in the digital sphere and the applicability of the GDPR to such a data structure, the discussion will be developed to critically assess the current trend towards using the financial institutions’ customers’ mobile devices as interfaces to the distributed data structure and the legal and sociological implications of this technological development. The potential impact of the analysis goes beyond digital identity within the finance sector, positioning the discussion towards approaches for e-governance and the regulation of digital identity in a way that human dignity is preserved and the risks of creating a ubiquitous “digital avatar” are adequately addressed by the law.
description: Keywords:
digital identity, mobile device, digital customer onboarding framework, financial services, distributed ledger technology, blockchain, privacy, fundamental rights, human dignity, surveillance, accountability, legal responsibility, personal data
description: ALJ 2021/2/3, page: 202-218
www.austrian-law-journal.at
Fixed $d$ Renormalization Group Analysis of Conserved Surface Roughening
Creators: name: Skultety, V.
name: Honkonen, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Conserved surface roughening represents a special case of interface dynamics where the total height of the interface is conserved. Recently, it was suggested [F. Caballero et al., Phys. Rev. Lett. 121, 020601 (2018)] that the original continuum model known as `Conserved Kardar-Parisi-Zhang'(CKPZ) equation is incomplete, as additional non-linearity is not forbidden by any symmetry in $d > 1$. In this work, we perform detailed field-theoretic renormalization group (RG) analysis of a general stochastic model describing conserved surface roughening. Systematic power counting reveals additional marginal interaction at the upper critical dimension, which appears also in the context of molecular beam epitaxy. Depending on the origin of the surface particle's mobility, the resulting model shows two different scaling regimes; If the particles move mainly due to the gravity, the leading dispersion law is $ω\sim k^2$, and the mean-field approximation describing a flat interface is exact in any spatial dimension. On the other hand, if the particles move mainly due to the surface curvature, the interface becomes rough with the mean-field dispersion law $ω\sim k^4$ , and the corrections to scaling exponents must be taken into account. We show, that the latter model consist of two sub-class of models that are decoupled in all orders of perturbation theory. Moreover, our RG analysis of the general model reveals that the universal scaling is described by a rougher interface than CKPZ universality class. The universal exponents are derived within the one-loop approximation in both fixed $d$ and $\varepsilon$-expansion schemes, and their relation is discussed. We point out all important details behind these two schemes which are often overlooked in the literature, and their misinterpretation might lead to inconsistent results.
Η Εικονογραφία της Κατανάλωσης της Τροφής και του Ποτού κατά την Εποχή του Χαλκού στο Αιγαίο
Creators: name: Μπιλίτου, Αναστασία Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: κατανάλωση τροφής
τοιχογραφία
Εποχή Χαλκού στο Αιγαίο
feasting
fresco
Bronze Age Aegean

description: Σκοπός αυτής τη εργασίας είναι να παρουσιάσει και να αναλύσει την εικονογραφία της κατανάλωσης της τροφής και του ποτού στο Αιγαίο την Εποχή του Χαλκού. Αρχικά, διερευνάται η πορεία της έρευνας γύρω από την τροφή και το ποτό στην διεθνή βιβλιογραφία και το πώς αυτή διαμόρφωσε το ενδιαφέρον των αρχαιολόγων που ασχολήθηκαν με το Προϊστορικό Αιγαίο. Στη συνέχεια, περιγράφονται τα χαρακτηριστικά και τα αποτελέσματα των επεισοδίων εορταστικής κατανάλωσης, γνωστά ως feasts, στις ανθρώπινες κοινωνίες, και σημειώνονται οι ενδείξεις που φανερώνουν την σημασία αυτών των επεισοδίων για τις κοινωνίες του προϊστορικού Αιγαίου, ιδιαίτερα για τις ανακτορικές κοινωνίες. Έπειτα, παρουσιάζεται εκτενώς το διαθέσιμο εικονογραφικό υλικό, το οποίο αποτελείται από τοιχογραφίες, σκηνές κεραμεικής, και σκηνές στην σφραγιδογλυφία. Ο σχολιασμός του εικονογραφικού υλικού είναι ζωτικής σημασίας, και στην εργασία ενισχύεται από στοιχεία ανασκαφικών δεδομένων και επιγραφικών μαρτυριών της Γραμμικής Β΄ Γραφής. Προτείνεται πως η εικονογραφία της κατανάλωσης της τροφής και του ποτού χρησιμοποιήθηκε από τις τοπικές ελίτ για να εκφράσει, να αναπαράγει, και να συμπληρώσει την ίδια την πρακτική της κατανάλωσης. Τοποθετώντας αυτές τις εικόνες σε στρατηγικά διαμορφωμένους και συμβολικούς χώρους, η ελίτ επιθυμούσε να κατευθύνει τα συναισθήματα των θεατών, να ισχυροποιήσει το κύρος της, να εξασφαλίσει την συνέχεια της μέσα στο χρόνο
description: The aim of this thesis is to present and analyze the iconography of the consumption of food and drink in the Aegean in the Bronze Age. Initially, we research the international literature centered around the study of food and drink, and try to explain how it shaped the interest of the archaeologists who dealt with the Prehistoric Aegean. Also, we describe the characteristics and the results of the practice of consumption, specifically the consumption taking place in festive episodes, known as feasts, in human societies, and we present the evidence pointing to the significance that these episodes held for the societies of the prehistoric Aegean, especially for the palatial ones. Then, the available pictorial material, consisting of frescoes, scenes on pottery, and scenes on seals and sealings, is presented extensively. The interpretive approach of the iconographic material is vital, and in the present thesis is supported by the available archaeological evidence and by the Linear B epigraphic texts. It is suggested that the iconography of food and drink consumption was used by local elites to express, reproduce, and supplement the practice of the consumption itself. By placing these images in strategically designed and symbolic spaces, the elite aimed to direct the feelings of the spectators, to strengthen its own prestige and to ensure its continuity over time
Static cylindrically symmetric spacetimes
Creators: name: Fjallborg, Mikael
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove existence of static solutions to the cylindrically symmetric Einstein-Vlasov system, and we show that the matter cylinder has finite extension. The same results are also proved for a quite general class of equations of state for perfect fluids coupled to the Einstein equations, extending the class of equations of state considered in \cite{BL}. We also obtain this result for the Vlasov-Poisson system.
description: Added acknowledgement
Effects of orientation and alignment in high-harmonic generation and above threshold ionization
Creators: name: Madsen, C. B.
name: Mouritzen, A. S.
name: Kjeldsen, T. K.
name: Madsen, L. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: When molecules interact with intense light sources of femtosecond or shorter duration the rotational degrees of freedom are frozen during the response to the strong nonperturbative interaction. We show how the frozen degrees of freedom affect the measurable signals in high-harmonic generation and above threshold ionization. High-harmonic generation exhibits optical coherence in the signal from different orientations of the molecule. For ionization, the contributions from different orientations are added incoherently. The effects are demonstrated for realistic alignment and orientation schemes.
description: 4 pages, 2 figures
Self-duality of One-dimensional Quasicrystals with Spin-Orbit Interaction
Creators: name: Sahu, Deepak Kumar
name: Acharya, Aruna Prasad
name: Choudhuri, Debajyoti
name: Datta, Sanjoy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Non-interacting spinless electrons in one-dimensional quasicrystals, described by the Aubry-André-Harper (AAH) Hamiltonian with nearest neighbour hopping, undergoes metal to insulator transition (MIT) at a critical strength of the quasi-periodic potential. This transition is related to the self-duality of the AAH Hamiltonian. Interestingly, at the critical point, which is also known as the self-dual point, all the single particle wave functions are multifractal or non-ergodic in nature, while they are ergodic and delocalized (localized) below (above) the critical point. In this work, we have studied the one dimensional quasi-periodic AAH Hamiltonian in the presence of spin-orbit (SO) coupling of Rashba type, which introduces an additional spin conserving complex hopping and a spin-flip hopping. We have found that, although the self-dual nature of AAH Hamiltonian remains unaltered, the self-dual point gets affected significantly. Moreover, the effect of the complex and spin-flip hoppings are identical in nature. We have extended the idea of Kohn's localization tensor calculations for quasi-particles and detected the critical point very accurately. These calculations are followed by detailed multifractal analysis along with the computation of inverse participation ratio and von Neumann entropy, which clearly demonstrate that the quasi-particle eigenstates are indeed multifractal and non-ergodic at the critical point. Finally, we mapped out the phase diagram in the parameter space of quasi-periodic potential and SO coupling strength.
description: 12 pages, 10 figures
Επιδράσεις των ρωμαϊκών εμφυλίων πολέμων στη νομισματική εικονογραφία του ελληνιστικού κόσμου
Creators: name: Καραθάνου, Ευφημία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Νομισματική
Ρωμαϊκοί εμφύλιοι πόλεμοι
Ελληνιστικός κόσμος
Numismatics
Roman civil wars
Hellenistic world

description: Σκοπός της παρούσας εργασίας είναι η μελέτη της επιρροής που άσκησαν οι ρωμαϊκοί εμφύλιοι πόλεμοι στην εικονογραφία των νομισμάτων που εκδόθηκαν στα όρια του πρώην ελληνιστικού κόσμου, έτσι όπως διαμορφώθηκε μετά τη σταδιακή εδραίωση της Ρώμης στην Ανατολή. Το χρονικό φάσμα, το οποίο καλύπτει η εργασία, ξεκινάει από τη σύγκρουση του Καίσαρα και του Πομπήιου και το τέλος της συμπίπτει με το πέρας των ρωμαϊκών εμφυλίων πολέμων, το οποίο σηματοδοτήθηκε με τη ναυμαχία του Ακτίου το 31 π.Χ. και την κατάκτηση της Αιγύπτου από τον Οκταβιανό. Το κύριο ερώτημα το οποίο εγείρεται είναι με ποιο κριτήριο επιλέγεται το εκάστοτε εικονογραφικό θέμα και κατά πόσο επηρεάστηκε από αντίστοιχα της Ρώμης. Παράλληλα, εξετάζονται η συχνότητα και η ένταση εικονογραφικών τύπων, αλλά και οι νομισματικές επιγραφές
description: The purpose of this paper is to study the impact of the Roman civil wars on the iconography of coins that were published on the borders of the former Hellenistic world, as it was formed after the gradual consolidation of Rome in the East. The timeframe covered by this study begins from the conflict between Caesar and Pompey, and its end coincides with the end of the Roman civil wars, which was marked by the naval battle of Aktio in 31 BC and the conquest of Egypt by Octavian. The main question that arises is by what criteria is the iconographic theme chosen and whether it is influenced by Rome. At the same time, the frequency and intensity of iconographic types, as well as the monetary inscriptions, are examined
INTERACTIVE READING OF SPANISH SILVER AGE LITERATURE: TEACHING AND RESEARCH PROMOTED BY BIBLIOTECA NACIONAL DE ESPAÑA
Creators: name: Romero-López, Dolores
name: Navarro, Alicia Reina
Publisher: name: Zenodo
Year: 2019
Subjects: Interactive edition, Biblioteca Nacional de España, Didactic Resources, Digital Reading, La otra Edad de Plata, Edad de Plata Interactiva

description: The main objective of this paper is to present a collection of interactive books edited by The Other Spanish Silver Age Research Group with the support of the eLITE-CM Project and in collaboration with the National Library of Spain (BNE). In the first place, we approach the changes that digital reading are undergoing from a theoretical perspective in order to better understand the interactive reading tools that exist in the publishing market. We start from a fact that neither teachers nor readers can renounce: literary reading, in whatever format, is an act of knowledge, understanding and interpretation of the reality, which is a creative activity which humankind cannot give up if we want to continue cultivating our free will and our cognitive development. Subsequently, the research results of the digital resource "The Interactive Silver Age", a collection of books in an interactive format available through the Spanish National Library website, are being used as reading for both the general public and university classrooms.
description: 13. Dolores Romero-López, Alicia Reina-Navarro. "Interactive Reading of the Silver Age: teaching and research promoted by the National Library of Spain". Long paper. Alliance of Digital Humanities Oorganizacion Congress, Utrecht 9-12 de julio de 2019. Web del Congreso: https://dh2019.adho.org. Publicación
Evidences for the random singlet phase in a new honeycomb iridate SrIr$_2$O$_{6-δ}$
Creators: name: Song, Pengbo
name: Zhu, Kejia
name: Yang, Fan
name: Wei, Yuan
name: Zhang, Lu
name: Yang, Huaixin
name: Sheng, Xian-Lei
name: Qi, Yang
name: Ni, Jiamin
name: Li, Shiyan
name: Li, Yanchun
name: Cao, Guanghan
name: Meng, Zi Yang
name: Li, Wei
name: Shi, Youguo
name: Li, Shiliang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Strong spin-orbital-coupling magnetic systems with the honeycomb structure can provide bond-directional interactions which may result in Kitaev quantum spin liquids and exotic anyonic excitations. However, one of the key ingredients in real materials$-$disorders$-$has been much less studied in Kitaev systems. Here we synthesized a trigonal SrIr$_2$O$_{6-δ}$ with $δ\approx 0.25$, which consists of two-dimensional honeycomb Ir planes with edge-sharing IrO$_6$ octahedra. First-principles computation and experimental measurements suggest that the electronic system is gapped, and there should be no magnetic moment as the Ir$^{5+}$ ion has no unpaired electrons. However, significant magnetism has been observed in the material, and it can be attributed to disorders that are most likely from oxygen vacancies. No magnetic order is found down to 0.05 K, and the low-temperature magnetic properties exhibit power-law behaviors in magnetic susceptibility and zero-field specific heat, and a single-parameter scaling of the specific heat under magnetic fields. These results provide strong evidence for the existence of the random singlet phase in SrIr$_2$O$_{6-δ}$, which offers a different member to the family of spin-orbital entangled iridates and Kitaev materials.
description: 6 pages, 4 figures
The reversal of the star formation-density relation in the distant universe
Creators: name: Elbaz, D.
name: Daddi, E.
name: Borgne, D. Le
name: Dickinson, M.
name: Alexander, D. M.
name: Chary, R-R
name: Starck, J-L
name: Brandt, W. N.
name: Kitzbichler, M.
name: MacDonald, E.
name: Nonino, M.
name: Popesso, P.
name: Stern, D.
name: Vanzella, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the relationship between the local environment of galaxies and their star formation rate (SFR) in the Great Observatories Origins Deep Survey, GOODS, at z~1, from ultradeep imaging at 24 microns with the MIPS camera onboard Spitzer. We show that the star formation-density relation observed locally was reversed at z~1: the average SFR of an individual galaxy increased with local galaxy density when the universe was less than half its present age. Hierarchical galaxy formation models (simulated lightcones from the Millennium model) predicted such a reversal to occur only at only at earlier epochs (z>2) and at a lower level. We present a remarkable structure at z~1.016, containing X-ray traced galaxy concentrations, which will eventually merge into a Virgo-like cluster. This structure illustrates how the individual SFR of galaxies increases with density at the ~1-2 Mpc scale. The SFR of z~1 galaxies is found to correlate with stellar mass suggesting that mass plays a role in the observed star formation-density trend. However the specific SFR (=SFR/M*) decreases with stellar mass while it increases with galaxy density, which implies that the environment does directly affect the star formation activity of galaxies. Major mergers do not appear to be the unique or even major cause for this effect since nearly half (46%) of the luminous infrared galaxies (LIRGs) at z~1 present the HST-ACS morphology of spirals, while only a third present a clear signature of major mergers. The remaining galaxies are divided into compact (9%) and irregular (14%) galaxies. Moreover, the specific SFR of major mergers is only marginally stronger than that of spirals. Reproducing the SFR-density relation at z ~ 1 is a new challenge for models, requiring a correct balance between mergers and in-situ star formation at early epochs.
description: Accepted for publication in Astronomy & Astrophysics, 17 pages, 29 figures (same as previous version except for a few typos). For a version of this paper with higher resolution figures, go to http://david.elbaz3.free.fr/papers.html
Οι αποστασίες από την Α΄ Αθηναϊκή Συμμαχία και η έννοια της βίας
Creators: name: Καραγιαννίδου, Ειρήνη Πολυχρονίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Αποστασίες
Α΄ Αθηναϊκή Συμμαχία
Βία
Defections
Delian League
Violence

description: Το θέμα της παρούσας εργασίας είναι οι αποστασίες από την Α΄ Αθηναϊκή Συμμαχία κατά την περίοδο της Πεντηκονταετίας και η έννοια της βίας. Η περίπτωση της κάθε πόλης παρουσιάστηκε χωριστά. Εξετάστηκε η θέση της στον αρχαίο κόσμο, οι σχέσεις της με την Αθήνα, καθώς και οι λόγοι που την οδήγησαν στην αναζήτηση συμμαχίας μαζί της. Έγινε αναλυτική περιγραφή των αποστασιών, των τρόπων αντίδρασης της Αθήνας και της χρήσης της βίας ως τρόπου καταστολής και σωφρονισμού. Εντοπίστηκαν ομοιότητες στον τρόπο με τον οποίο η Αθήνα επέβαλλε την βούλησή της αλλά και προσαρμοστικές μεταβολές, που ανταποκρίνονταν στα εκάστοτε δεδομένα
description: The present study examines the defections from the Delian League during the period of the Pentecontaetia and the concept of violence. Each city was presented separately. Specifically, it was examined her position in the ancient world, its relations with Athens and the reasons that led her to seek alliance with Athens. The defections were described in detail, and so were the ways in which Athens responded and used violence as a means of repression and correction. Similarities have been identified in the way in which Athens has imposed her will, but also adaptive changes that responded to certain circumstances
Testing homogeneity of the galaxy distribution in the SDSS using Renyi entropy
Creators: name: Pandey, Biswajit
name: Sarkar, Suman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyze a set of volume limited sample of galaxies from the SDSS to study the issue of cosmic homogeneity. We use the Renyi entropy of different order to probe the inhomogeneties present in the galaxy distributions. We also calculate the Renyi diveregence to quantify the deviations of the galaxy distribution from a homogeneous Poisson distribution on different length scales. We separately carry out the analysis using the overlapping spheres and the independent voxels. Our analysis suggests that the scale of homogeneity is underestimated in the smaller galaxy samples due to the suppression of inhomogeneities by the overlapping of the measuring speheres. We find that an analysis with the independent voxels and/or use of a significantly larger galaxy sample can help to circumvent or mitigate this problem. Combining the results from these analyses, we find that the galaxy distribution in the SDSS becomes homogeneous on a length scale beyond $140 \, h^{-1}\, {\rm Mpc}$.
description: 16 pages, 4 figures, 1 table, Substantial revision, Accepted for publication in JCAP
Casimir Effect and Global Theory of Boundary Conditions
Creators: name: Asorey, M.
name: Garcia-Alvarez, D.
name: Munoz-Castaneda, J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The consistency of quantum field theories defined on domains with external borders imposes very restrictive constraints on the type of boundary conditions that the fields can satisfy. We analyse the global geometrical and topological properties of the space of all possible boundary conditions for scalar quantum field theories. The variation of the Casimir energy under the change of boundary conditions reveals the existence of singularities generically associated to boundary conditions which either involve topology changes of the underlying physical space or edge states with unbounded below classical energy. The effect can be understood in terms of a new type of Maslov index associated to the non-trivial topology of the space of boundary conditions. We also analyze the global aspects of the renormalization group flow, T-duality and the conformal invariance of the corresponding fixed points.
description: 11 pages
Additional file 4: of GPR120 is an important inflammatory regulator in the development of osteoarthritis
Creators: name: Chen, Yuanfeng
name: Zhang, Dan
name: Ho, Ki
name: Lin, Sien
name: Suen, Wade
name: Zhang, Huantian
name: Zha, Zhengang
name: Li, Gang
name: Leung, Po
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Quantitative assay of immunohistochemical staining for positive cells and structural parameters of subchondral bone by μCT. (A) Percentages of MMP13, (B) type X collagen (COLX)-positive chondrocytes in articular cartilage, and (C) The number of Osterix-positive cells in the tibial subchondral region. (D) Tb.Th. and (E) SMI in subchondral bone determined by μCT. n = 5 per group. ***p < 0.001, **p < 0.01, *p < 0.05, compared with the WT OA at 4 weeks. (PDF 175 kb)
Thermal conductivity of benzothieno-benzothiophene derivatives at the nanoscale
Creators: name: Gueye, Magatte N.
name: Vercouter, Alexandre
name: Jouclas, Rémy
name: Guérin, David
name: Lemaur, Vincent
name: Schweicher, Guillaume
name: Lenfant, Stéphane
name: Antidormi, Aleandro
name: Geerts, Yves
name: Melis, Claudio
name: Cornil, Jérôme
name: Vuillaume, Dominique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study by scanning thermal microscopy the nanoscale thermal conductance of films (40 to 400 nm thick) of [1]benzothieno[3,2-b][1]benzothiophene (BTBT) and 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT-C8). We demonstrate that the out-of-plane thermal conductivity is significant along the interlayer direction, larger for BTBT (0.63 +/- 0.12 W m-1 K-1) compared to C8-BTBT-C8 (0.25 +/- 0.13 W m-1 K-1). These results are supported by molecular dynamics calculations (Approach to Equilibrium Molecular Dynamics method) performed on the corresponding molecular crystals. The calculations point to significant thermal conductivity (3D-like) values along the 3 crystalline directions, with anisotropy factors between the crystalline directions below 1.8 for BTBT and below 2.8 for C8-BTBT-C8, in deep contrast with the charge transport properties featuring a two-dimensional character for these materials. In agreement with the experiments, the calculations yield larger values in BTBT compared to C8-BTBT-C8 (0.6-1.3 W m-1 K-1 versus 0.3-0.7 W m-1 K-1, respectively). The weak thickness dependence of the nanoscale thermal resistance is in agreement with a simple analytical model.
description: Nanoscale (2021)
Generalized Coherent States as Preferred States of Open Quantum Systems
Creators: name: Boixo, Sergio
name: Viola, Lorenza
name: Ortiz, Gerardo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the connection between quasi-classical (pointer) states and generalized coherent states (GCSs) within an algebraic approach to Markovian quantum systems (including bosons, spins, and fermions). We establish conditions for the GCS set to become most robust by relating the rate of purity loss to an invariant measure of uncertainty derived from quantum Fisher information. We find that, for damped bosonic modes, the stability of canonical coherent states is confirmed in a variety of scenarios, while for systems described by (compact) Lie algebras stringent symmetry constraints must be obeyed for the GCS set to be preferred. The relationship between GCSs, minimum-uncertainty states, and decoherence-free subspaces is also elucidated.
description: 5 pages, no figures; Significantly improved presentation, new derivation of invariant uncertainty measure via quantum Fisher information added.
Toward sustainable communities : a planning framework for municipal and local governments
Creators: name: Roseland, Mark
Publisher: name: University of British Columbia
Year: 2008

description: Some municipal and local governments are expanding their role in sustainable development, but little is known about the nature and extent of these initiatives. This study develops an urban-relevant understanding of sustainable development, then explores the role of North American human settlements in achieving sustainable development and the community-level planning implications of that role. It proposes a framework for sustainable community development, then identifies and evaluates the current range of relevant municipal and local government initiatives. The study data consist of case studies and examples of specific municipal and local government initiatives. Data sources were libraries, computerized databases, and networking. Hundreds of references and initiatives were identified, documented and reviewed. The focus of the data search was on the range of initiatives being practiced or proposed by municipal and local governments. The study develops the argument that sustainable communities require unprecedented and simultaneous emphasis on the efficient use of urban space (e.g., intensifying urban land use, increasing infrastructural efficiency); on reducing consumption of material and energy resources (e.g., generally minimizing the consumption of essential natural capital, encouraging regional self-reliance); on improving community livability (e.g., community development, healthy communities); and on organizing administrative and planning processes which can deal effectively, sensitively and comprehensively with the attendant socioeconomic complexities. The initiatives are categorized according to these criteria. Efficient Use of Urban Space includes transportation planning and traffic management, and land use and growth management. Reducing Resource Consumption encompasses atmospheric change and air quality, energy conservation and efficiency, waste reduction and recycling, and water and sewage. Improving Community Livability includes initiatives to green the city, develop a sustainable economy, and enhance both local community livability and global community responsibility. Administration for Sustainability encompasses investment and purchasing, leadership by example, environmental administration, and extending beyond municipal and local government. The study concludes that the elements for moving toward sustainable communities are being put in place but not, as yet, the necessary synthesis. The criteria of efficient use of urban space, reducing resource consumption, improving community livability, and administration for sustainability are necessary conditions for sustainable community development.
Η χρήση του αντικειμένου στην ελληνική τέχνη: Οι περιπτώσεις των ready-mades και των assemblages
Creators: name: Ματθαίος, Απόστολος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: ελληνική τέχνη
πραγματικό αντικείμενο
Greek art
real object
ready-made
assemblage

description: Σκοπός της διπλωματικής εργασίας ήταν να εντοπισθούν τα έργα Ελλήνων καλλιτεχνών που περιλαμβάνουν ή αποτελούνται από πραγματικά αντικείμενα και στη συνέχεια να μελετηθούν προκειμένου να εξαχθούν συμπεράσματα αναφορικά με τον χρόνο εισαγωγής της συγκεκριμένης πρακτικής στην ελληνική τέχνη, τη συχνότητα εμφάνισής της, τη μορφολογική παράμετρο της χρήσης των αντικειμένων, το συμβολισμό και τα μηνύματα που εμπεριέχονται. Η έρευνα στόχευσε ειδικά στις περιπτώσεις των ready-mades και των assemblages, όπου τα έργα λειτουργούν ανεξάρτητα από τη θέση τους στο χώρο και έχουν συνήθως μικρό μέγεθος. Κατά την αποδελτίωση του υλικού διαπιστώθηκε ότι η καλύτερη και πληρέστερη προσέγγιση στις περισσότερες περιπτώσεις γίνεται από δύο πλευρές: εξετάζοντας και κατηγοριοποιώντας τα έργα σύμφωνα με το εννοιολογικό τους περιεχόμενο, το οποίο μπορεί να είναι κοινωνικοπολιτικό, ψυχολογικό, θρησκευτικό, ονειρικό ή ακόμη και φαντασιακό, και χρησιμοποιώντας μορφολογικά κριτήρια για την ομαδοποίηση σχεδόν του συνόλου των έργων, βάσει ορισμένων ομοιοτήτων που παρουσιάζουν αναφορικά με τον τρόπο κατασκευής τους και το είδος των αντικειμένων που χρησιμοποιούνται. Από την διαδικασία της μελέτης και κατηγοριοποίησης του υπό εξέταση υλικού, προέκυψαν ορισμένα συμπεράσματα τα οποία παρουσιάζονται στο τέλος της εργασίας
description: The aim of the diploma thesis was to identify the works of Greek artists that include or consist of real objects and then to study them in order to draw conclusions regarding the time of introduction of this particular practice in Greek art, the frequency of its appearance, the morphological parameter of the use of real objects, the symbolism and the messages that are contained in these artworks. The research was specifically targeted at ready-mades and assemblages, which are artworks that exist regardless of their location in the space and are usually of small size. After examining thoroughly the number of found artworks, it was decided that the best and most comprehensive approach that needed to be followed was categorizing the works on one hand according to their conceptual content, which may be socio-political, psychological, religious, dreamlike or even imaginary, and on the other hand using morphological criteria, based on certain similarities with regard to how they are constructed and the type of the real objects that are used. The conclusions that were extracted from this process are listed at the end of the thesis
Οι ρωμαϊκοί ναοί της Αθήνας και της Κορίνθου: Μια συγκριτική μελέτη
Creators: name: Κέρου, Ελπίδα-Ειρήνη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: ρωμαϊκοί ναοί
ρωμαϊκή Αθήνα
ρωμαϊκή Κόρινθος
roman temples
roman Athens
roman Corinth

description: Σκοπός της διατριβής ήταν η μελέτη των ναών της Αθήνας και της Κορίνθου στους ρωμαϊκούς αυτοκρατορικούς χρόνους και η εξαγωγή συμπερασμάτων για τους ναούς στις δύο πόλεις συγκριτικά. Οι πόλεις αυτές επιλέχθηκαν, καθώς αν και ανήκουν στην ίδια γεωγραφική περιοχή, υπόκειντο σε διαφορετικό καθεστώς. Εξετάσαμε τους ναούς με βάση τον τύπο στον οποίο ανήκουν. Έπειτα, αναφερθήκαμε στην επαναχρησιμοποίηση προγενέστερων ναών. Τέλος, θίξαμε το θέμα των λατρειών που στεγάστηκαν μέσα στους ναούς. Με βάση όλα τα προηγούμενα, στο τελευταίο κεφάλαιο, παρουσιάσαμε τις ομοιότητες και τις διαφορές που ανιχνεύτηκαν στις δύο πόλεις
description: The aim of the present thesis was the study of the temples of Athens and Corinth in the roman imperial period and furthermore to draw conclusions about the temples in the two cities comparatively. These cities were selected, because although they belonged to the same geographical area, they had a different status. We examined the temples according to the type they belong to. Finally, we then referred to the reuse of earlier temples. Finally, we studied the topic of the cults that were housed in the temples. Based on all the above, in the last chapter, we presented the similarities and differences that were detected in the two cities
Renormalization of the topological charge density in QCD with dimensional regularization
Creators: name: Lüscher, Martin
name: Weisz, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: To all orders of perturbation theory, the renormalization of the topological charge density in dimensionally regularized QCD is shown to require no more than an additive renormalization proportional to the divergence of the flavour-singlet axial current. The proof is based on the standard BRS analysis of the QCD vertex functional in the background gauge and exploits the special algebraic properties of the charge density through the Stora--Zumino chain of descent equations.
description: Plain TeX source, 24 pages, no figures; v2: minor corrections in eqs.(5.14) and (6.1); v3: added reference, version accepted for publication; v4: further typos corrected
Waves at surfactant-laden liquid-liquid crystal interface
Creators: name: Lishchuk, S. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A theoretical study is presented of surface waves at a monomolecular surfactant film between an isotropic liquid and a nematic liquid crystal for the case when the surfactant film is in the isotropic two-dimensional fluid phase and induces homeotropic (normal to the interface) orientation of the nematic director. The dispersion relation for the surface waves is obtained, and different surface modes are analyzed with account being taken of the anchoring induced by the surfactant layer, the curvature energy of the interface, and the anisotropy of the viscoelastic coefficients. The dispersion laws for capillary and dilatational surface modes retain structure similar to that in isotropic systems, but involve anisotropic viscosity coefficients. Additional modes are related to relaxation of the nematic director field due to anchoring at the interface. The results can be used to determine different properties of nematic-surfactant-isotropic interfaces from experimental data on surface light scattering.
description: 17 pages, 6 figures; eqs (87) and (D28) corrected, fig.3 replaced
Το ζήτημα της δουλείας στον Νεοελληνικό Διαφωτισμό
Creators: name: Σαμαράς, Νικόλαος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Νεοελληνικός Διαφωτισμός
Δουλεία
Διανόηση
Greek 4Enlightenment
Slavery
Intellegence

description: Σκοπός της παρούσας μεταπτυχιακής εργασίας είναι η παρουσίαση των οπτικών προσέγγισης του Νεοελληνικού Διαφωτισμού για το ζήτημα της δουλείας, λαμβάνοντας υπ’ όψιν τις οικονομικές, πολιτικές και κοινωνικές συνθήκες της εποχής του. Η έρευνα βασίστηκε στα κλασσικά κείμενα – πηγές του Νεοελληνικού Διαφωτισμού(πρωτογενείς και δευτερογενείς), καθώς και στην απαραίτητη βιβλιογραφία. Η εργασία δομείται θεματικά, συνθέτοντας στοιχεία που καλύπτουν τα χρονικά όρια του Νεοελληνικού Διαφωτισμού (1750 – 1830). Αρχικά, παρουσιάζεται η στάση του Διαφωτισμού για το ζήτημα της δουλείας και η επίδραση της στάσης αυτής στον Νεοελληνικό Διαφωτισμό. Παράλληλα, αναπτύσσονται οι απόψεις της ελληνικής διανόησης για θεωρητικά ζητήματα σχετικά με τη δουλεία. Ακολούθως, εξετάζεται η προσέγγιση του Νεοελληνικού Διαφωτισμού, αναφορικά με τις πρακτικές υποδούλωσης που λειτουργούσαν στην εποχή του, όπως η δουλεία και το ατλαντικό δουλεμπόριο Αφρικανών και οι συναφείς με τη δουλεία πρακτικές της Οθωμανικής Αυτοκρατορίας. Διερευνώνται, επίσης, οι θέσεις του Νεοελληνικού Διαφωτισμού για τη χειραφέτηση των δούλων και την προοπτική κοινωνικής τους ενσωμάτωσης. Τέλος, εξετάζεται ο αντίκτυπος των απόψεων του Νεοελληνικού Διαφωτισμού στα ελληνικά επαναστατικά συντάγματα και την ελληνική συλλογική νοοτροπία
description: The purpose of this postgraduate thesis is to present the approaches of the issue of slavery fromGreek Enlightenment perspective, taking into account the economic, political and social conditions of his time. The research was based on the classical texts – sources of the Greek Enlightenment (primary and secondary), as well as the necessary bibliography. The work is structured thematically, composing elements that cover the time limits of Greek Enlightenment (1750 - 1830).First of all, the attitude of the Enlightenment on the issue of slavery and the effect of thison Greek Enlightenment is presented.At the same time, the aspects of Greek intelligence on theoretical issues concerning slavery are being developed.Subsequently, the Greek Enlightenment’s approach is examined, with regard to the subjugation practices of its era, such as the slavery and Atlantic slave trade of Africans and the slavery-related practices of the Ottoman Empire. Greek Enlightenment's views on emancipation of slaves and the prospect of their social integration are also explored.Finally, the impact of Greek Enlightenment's principles on the Greek revolutionary constitutions and the Greek collective mentality is being examined
Optical surface waves over metallo-dielectric nanostructures: Sommerfeld integrals revisited
Creators: name: Ung, Bora
name: Sheng, Yunlong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The asymptotic closed-form solution to the fundamental diffraction problem of a linear horizontal Hertzian dipole radiating over the metallo-dielectric interface is provided. For observation points just above the interface, we confirm that the total surface near-field is the sum of two components: a long-range surface plasmon polariton and a short-range radiative cylindrical wave. The relative phases, amplitudes and damping functions of each component are quantitatively elucidated through simple analytic expressions for the entire range of propagation: near and asymptotic. Validation of the analytic solution is performed by comparing the predictions of a dipolar model with recently published data
description: 13 pages, 7 figures. To appear in Optics Express Vol. 16, No. 12
The Chemical Composition of the Solar Surface
Creators: name: Prieto, Carlos Allende
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Sun provides a standard reference against which we compare the chemical abundances found anywhere else in the Universe. Nevertheless, there is not a unique 'solar' composition, since the chemical abundances found in the solar interior, the photosphere, the upper atmosphere, or the solar wind, are not exactly the same. The composition of the solar photosphere, usually preferred as a reference, changes with time due to diffusion, convection, and probably accretion. In addition, we do not know the solar photospheric abundances, inferred from the analysis of the solar spectrum using model atmospheres, with high accuracy, and uncertainties for many elements exceed 25%. This paper gives an overview of the methods and pitfalls of spectroscopic analysis, and discusses the chemistry of the Sun in the context of the solar system.
description: 8 pages, 4 figures, invited talk at the conference Chemical elements in the Universe, a celebration of 150 years of the Periodic Table, December 2019, Bangalore, India
RISIS Resources and Access
Creators: name: Thomas, Scherngell
name: Benedetto, Lepori
Publisher: name: Zenodo
Year: 2019
Subjects: RISIS datasets
STI Indicators
OrgReg
Knowmak tool

description: The presentation summarize the opportunities that the integration of RISIS and KNOWMAK can offer to investigate topics related to science, technology and innovation policy, how they are likely to transform and improve research questions that scholars can address, and how they can also contribute to enlarge and consolidate research networks.
Phonological elicitation: Glottal stops and ejectives
Creators: name: Sales, Henry
name: Bertet, Denis
name: Michael, Lev
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: mam

description: Elicitation of words that feature word-final glottal stops (<'>) or uvular (), plain velar (), and palatalized velar () ejective stops, or that feature such phonemes in their San Ildefonso Ixtahuacán Mam cognates. Lead elicitor and scribe: Denis Bertet. Clean copy: Lev Michael.
Cross-compensation of Zernike aberrations in Gaussian optics
Creators: name: Czuchnowski, Jakub
name: Prevedel, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Zernike polynomials are one of the most widely used mathematical descriptors of optical aberrations in the fields of imaging and adaptive optics. Their mathematical orthogonality as well as isomorphisms with experimentally observable aberrations make them a very powerful tool in solving numerous problems in beam optics. However, Zernike aberrations show cross-coupling between individual modes when used in combination with Gaussian beams, an effect that has not been extensively studied. Here we propose a novel framework that is capable of explaining the fundamental cross-compensation of Zernike type aberrations, both in low-aberration and high-aberration regimes. Our approach is based on analysing the coupling between Zernike modes and different classes of Laguerre-Gauss modes which allows investigating aberrated beams not only on a single plane but also during their 3D propagation.