cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An ALMA study of outflow parameters of protoclusters: outflow feedback to maintain the turbulence
Creators: name: Baug, T.
name: Wang, Ke
name: Liu, Tie
name: Wu, Yue-Fang
name: Li, Di
name: Zhang, Qizhou
name: Tang, Mengyao
name: Goldsmith, Paul F.
name: Liu, Hong-Li
name: Tej, Anandmayee
name: Bronfman, Leonardo
name: Toth, L. Viktor
name: Kim, Kee-Tae
name: Li, Shang-Huo
name: Lee, Chang Won
name: Tatematsu, Ken'ichi
name: Hirota, Tomoya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: With the aim of understanding the role of outflows in star formation, we performed a statistical study of the physical parameters of outflows in eleven massive protoclusters associated with ultra-compact HII regions. A total of 106 outflow lobes are identified in these protoclusters using the ALMA CO (3-2), HCN (4-3) and HCO+ (4-3) line observations. Although the position angles of outflow lobes do not differ in these three tracers, HCN and HCO+ tend to detect lower terminal velocity of the identified outflows compared to CO. The majority of the outflows in our targets are young with typical dynamical time-scales of 10^2-10^4 years, and are mostly composed of low-mass outflows along with at least one high-mass outflow in each target. An anti-correlation of outflow rate with dynamical time-scale indicates that the outflow rate possibly decreases with time. Also, a rising trend of dynamical time-scale with the mass of the associated core hints that the massive cores might have longer accretion histories than the low mass cores. Estimation of different energies in these protoclusters shows that outflows studied here cannot account for the generation of the observed turbulence, but can sustain the turbulence at the current epoch as the energy injection rate from the outflows is similar to the estimated dissipation rate.
description: 14 pages (5 additional pages of Appendix), 8 figures (4 additional figures in Appendix), 3 tables; accepted for publication in MNRAS
An active approach to colloidal self-assembly
Creators: name: Mallory, S. A.
name: Valeriani, C.
name: Cacciuto, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In this review we discuss recent advances in the self-assembly of self-propelled colloidal particles and highlight some of the most exciting results in this field with a specific focus on dry active matter. We explore this phenomenology through the lens of the complexity of the colloidal building blocks. We begin by considering the behavior of isotropic spherical particles. We then discuss the case of amphiphilic and dipolar Janus particles. Finally, we show how the geometry of the colloids and/or the directionality of their interactions can be used to control the physical properties of the assembled active aggregates, and suggest possible strategies on how to exploit activity as a tunable driving force for self-assembly. The unique properties of active colloids lend promise for the design of the next generation of functional, environment-sensing microstructures able to perform specific tasks in an autonomous and targeted manner.
Classical kinetic energy, quantum fluctuation terms and kinetic-energy functionals
Creators: name: Hamilton, I. P.
name: Mosna, Ricardo A.
name: Site, L. Delle
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We employ a recently formulated dequantization procedure to obtain an exact expression for the kinetic energy which is applicable to all kinetic-energy functionals. We express the kinetic energy of an N-electron system as the sum of an N-electron classical kinetic energy and an N-electron purely quantum kinetic energy arising from the quantum fluctuations that turn the classical momentum into the quantum momentum. This leads to an interesting analogy with Nelson's stochastic approach to quantum mechanics, which we use to conceptually clarify the physical nature of part of the kinetic-energy functional in terms of statistical fluctuations and in direct correspondence with Fisher Information Theory. We show that the N-electron purely quantum kinetic energy can be written as the sum of the (one-electron) Weizsacker term and an (N-1)-electron kinetic correlation term. We further show that the Weizsacker term results from local fluctuations while the kinetic correlation term results from the nonlocal fluctuations. For one-electron orbitals (where kinetic correlation is neglected) we obtain an exact (albeit impractical) expression for the noninteracting kinetic energy as the sum of the classical kinetic energy and the Weizsacker term. The classical kinetic energy is seen to be explicitly dependent on the electron phase and this has implications for the development of accurate orbital-free kinetic-energy functionals. Also, there is a direct connection between the classical kinetic energy and the angular momentum and, across a row of the periodic table, the classical kinetic energy component of the noninteracting kinetic energy generally increases as Z increases.
description: 10 pages, 1 figure. To appear in Theor Chem Acc
Structure, derivatisation, and metal complexation of p-cyclohexylcalix[4]arene
Creators: name: Shen, Chao
name: Phe, Rene Z. H.
name: Fong, Isabella
name: Sobolev, Alexandre N.
name: Mocerino, Mauro
name: Massi, Massimiliano
name: Ogden, Mark I.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: Driven by an interest in the impact of the para-substituent of calix[4]arenes on metal complexation and structural chemistry, studies of p-cyclohexylcalix[4]arene (L) have been carried out. The 1:1 dichloromethane and dimethylformamide solvates were found to be isostructural, and different to the typical bilayer structure often observed for p-t-butylcalix[4]arene solvates. The methanol solvate, in contrast, does form a bilayered structure but is also a 1:1 solvate, unlike the p-t-butylcalix[4]arene·2MeOH system. Lanthanoid complexation was investigated, resulting in the structural characterisation of two different DMF solvates of a 2:2 dimeric europium complex, Eu2(L–3H)2(DMF)4. A tetrazole derivative, 5,11,17,23-tetracyclohexyl-25,27-dihydroxy-26,28-bis(tetrazole-5-ylmethoxy)calix[4]arene, has been synthesised via the intermediate 5,11,17,23-tetracyclohexyl-25,27-dihydroxy-26,28-dicyanomethoxycalix[4]arene, with the latter compound being structurally characterised. Attempts to isolate lanthanoid clusters supported by the tetrazole derivative under conditions known to form Ln19 clusters with the p-t-butyl analogue were unsuccessful, resulting only in isolation of the ligand from the reaction mixture.
On some congruence properties of elliptic curves
Creators: name: Qiu, Derong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H52, 11G05, 11G20

description: In this paper, as a result of a theorem of Serre on congruence properties, a complete solution is given for an open question (see the text) presented recently by Kim, Koo and Park. Some further questions and results on similar types of congruence properties of elliptic curves are also presented and discussed.
description: 11 pages, The title is changed. Thanks to a result of J.-P. Serre from his letter on June 15, 2009 to the author, a complete solution for an open question of Kim, Koo and Park is obtained in this fifth revised version. Some related questions and results are also presented and discussed
Media and Public Diplomacy. Case study: Greek financial crisis
Creators: name: Χούτος, Κωνσταντίνος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Μέσα Μαζικής Ενημέρωσης
Δημόσια Διπλωματία
Ελληνική Οικονομική Κρίση
Media Public Diplomacy
Public Diplomacy
Greek financial crisis

description: Η παγκόσμια οικονομική κρίση έχει επηρεάσει όλες σχεδόν τις ευρωπαϊκές χώρες και μέλη της Ευρωπαϊκής Ένωσης, αλλά η Ελλάδα είναι μία από τις πιο πληγείσες. Αν και η Ελλάδα επένδυσε σε «γεγονότα διπλωματίας μέσων ενημέρωσης» με τη διοργάνωση των Ολυμπιακών Αγώνων του 2004, προκειμένου να βελτιώσει την εικόνα της σε όλο τον κόσμο, απέτυχε στον επαναπροσδιορισμό της θέσης της χώρας, δεδομένου ότι η δημόσια διπλωματία της, ήταν ακόμα επίκεντρο πολιτιστικών και εκπαιδευτικών δεσμών και προσέλκυσης τουριστών. Ως αποτέλεσμα, τα μέσα μαζικής ενημέρωσης που καλύπτουν την ελληνική ύφεση απεικονίζουν τη χώρα με ένα πολύ αρνητικό τρόπο, χρησιμοποιώντας εκφράσεις όπως «κακοί» και «καλοί» Ευρωπαίοι και «τεμπέληδες» νότιοι. Επιπλέον, η κάλυψη της κρίσης του ελληνικού χρέους από τα μέσα μαζικής ενημέρωσης κυριαρχείται από δραματικές εικόνες, από καταστάσεις όπως η διαφθορά, η εκτεταμένη φοροδιαφυγή, η παράτυπη αναποτελεσματικότητα του συστήματος και της γραφειοκρατίας στην Ελλάδα, και όχι από την ανάλυση της περίπλοκης ελληνικής οικονομικής κατάστασης. Η ελληνική δημόσια διπλωματία χαρακτηρίζεται ασυντόνιστη δίχως κεντρική κατεύθυνση. Αυτή η διατριβή επιχειρεί να εξετάσει πώς τα ξένα και τα ελληνικά μέσα μαζικής ενημέρωσης απεικονίζουν την ελληνική οικονομική κρίση, χρησιμοποιώντας δεδομένα από συγκεκριμένα μέσα μαζικής ενημέρωσης σε όλο τον κόσμο.
description: The Global financial crisis has affected almost all European countries and members of the European Union but Greece is one of the most affected. Although Greece invested in ‘media events diplomacy’ by organizing the 2004 Athens Olympic Games in order to improve its image around the world, it failed in redefining the position of the country, since its public diplomacy was still focusing on cultural and educational links and attracting tourists. As a result, the media covering the Greek recession depicted the country in a really negative way, using expressions like ‘bad’ and ‘good’ Europeans and ‘lazy’ southerners. Additionally, media coverage of the Greek debt crisis has been dominated by dramatic pictures of situations like corruption, extensive tax evasion, the inefficient illegal system and bureaucracy in Greece, and not by an analysis of the complicated Greek economic situation. Greece’s public diplomacy has no well-coordinated and central direction. This thesis tries to examine how both foreign and Greek media depict the Greek recession using data from specific mass media around the world.
Vibrational assignments and line shapes in inelastic tunnelling spectroscopy: H on Cu(100)
Creators: name: Paavilainen, Sami
name: Persson, Mats
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have carried out a computational study of the inelastic electron tunneling spectrum (IETS) of the two vibrational modes of a single hydrogen atom on a Cu(100) surface in a scanning tunneling microscopy (STM) junction. This study addresses key issues about vibrational assignment and line shape of observed peaks in IETS within the framework of density functional theory calculations and the Lorente-Persson theory for STM-IETS. We argue that the observation of only a single, broad peak in the STM-IETS [L.J. Lauhon and W. Ho, Phys. Rev. Lett. 85, 4566 (2000)] is not caused by any symmetry restrictions or any cancellation between inelastic and elastic vibrational contributions for one of the two modes but is due to strongly overlapping superposition of the contributions from the two modes caused by the rather large instrumental broadening and the narrow vibrational energy separation between the modes. In particular, we find that this broadening and the large asymmetry of the vibrational line shapes gives rise to substantial apparent vibrational energy shifts of the two modes and decrease their apparent energy separation.
A study of image: Maillardville British Columbia
Creators: name: Goddard, Charles R.
Publisher: name: University of British Columbia
Year: 2008

description: This study is the result of my curiosity about what makes urban places special and memorable. I believe that if the various physical components distinguishing urban places are identified and analyzed, we can develop principles and policies to preserve and enhance them. I chose Maillardville as the study area because of my familiarity with area, its historical and cultural significance, and because Maillardville is currently undergoing a physical transformation. Although place images may be an intangible urban quality, they are not difficult to study. Careful observation and resident interviews are efficient and economical tools to discover the various components of the urban image. From there it is possible to develop a visual plan for the preservation and enhancement of a particular place's image. In the course of this investigation I discovered that a direct relationship exists between Maillardville's physical components and the public image and that this public image focuses almost exclusively on the early settlement located in the Laval Square area. Recent changes outside this area are not significant to the residents' perception of the public image. Yet changes, such as the new commercial and multi-family redevelopments, when undertaken in a fashion which reflects Maillardville's cultural and historical context, are recognized by residents as supportive elements and with time will likely become significant to the public image. From this it appears that residents prefer to live in a unique environment that reflects a sense of continuity with the past. It is my hope that this study will contribute to the continuation of Maillardville as a unique place by identifying the image elements and illustrating their importance to the existing place image.
Phase Transitions and superuniversality in the dynamics of a self-driven particle
Creators: name: Grima, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study an active random walker model in which a particle's motion is determined by a self-generated field. The field encodes information about the particle's path history. This leads to either self-attractive or self-repelling behavior. For self-repelling behavior, we find a phase transition in the dynamics: when the coupling between the field and the walker exceeds a critical value, the particle's behavior changes from renormalized diffusion to one characterized by a diverging diffusion coefficient. The dynamical behavior for all cases is surprisingly independent of dimension and of the noise amplitude.
description: 14 pages, 4 figures
Kilohertz quasi-periodic oscillations in neutron-star X-ray binaries: Flattening of the lag spectrum with increasing luminosity
Creators: name: Peirano, Valentina
name: Méndez, Mariano
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the energy-dependent time lags and rms fractional amplitude of the kilohertz quasi-periodic oscillations (kHz QPOs) of a group of neutron-star low mass X-ray binaries (LMXBs). We find that for the lower kHz QPO the slope of the best-fitting linear model to the time-lag spectrum and the total rms amplitude integrated over the 2 to 25 keV energy band both decrease exponentially with the luminosity of the source. For the upper kHz QPO the slope of the time-lag spectrum is consistent with zero, while the total rms amplitude decreases exponentially with the luminosity of the source. We show that both the slope of the time-lag spectrum and the total rms amplitude of the lower kHz QPO are linearly correlated with a slope of ~1. Finally, we discuss the mechanism that could be responsible for the radiative properties of the kHz QPOs, with the variability originating in a Comptonising cloud or corona that is coupled to the innermost regions of the accretion disc, close to the neutron star.
description: 7 pages, 5 figures, accepted for publication in MNRAS
Cooling Models for the Most Massive White Dwarfs
Creators: name: Schwab, Josiah
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a set of ultramassive white dwarf models, focused on masses above $1.3\,M_\odot$. Given the uncertainties about the formation and compositions of such objects, we construct parameterized model sequences, guided by evolutionary calculations including both single star and double white dwarf merger formation channels. We demonstrate that the cooling of objects with central densities in excess of $10^9\,\rm g\,cm^{-3}$ is dominated by neutrino cooling via the Urca process in the first $\approx 100$ Myr after formation. Our models indicate that the recently discovered ultramassive white dwarf ZTF J190132.9+145808.7 is likely to have experienced this Urca-dominated cooling regime. We also show that the high densities imply that diffusion is unlikely to significantly alter the core compositions of these objects before they crystallize.
description: 9 pages, 6 figures; Accepted to ApJ
Εξέταση του ρηματικού συστήματος της κρητικής διαλέκτου της περιοχής του Χάνδακα μέσα από τις συμβολαιογραφικές πράξεις του νοταρίου Πέτρου Καστροφύλακα (κατάστιχο 37, 1558 – 1559)
Creators: name: Μερσυνιά, Σταματία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Κρήτη-Μορφολογία
Ρηματικό Σύστημα
Crete-Morphology
Verbal System

description: Η εργασία αυτή στοχεύει στο να παρουσιάσει το ρηματικό σύστημα της κρητικής διαλέκτου του 16ου αι. μέσα από τη μελέτη των συμβολαιογραφικών πράξεων του Πέτρου Καστροφύλακα (Χάνδακας, 1558 – 1559). Μετά από μια ιστορική εισαγωγή, απαραίτητη για την κατανόηση του βαθμού της γλωσσικής επαφής Κρητών και Βενετών, σχολιάζονται το επίπεδο δανεισμού και ο τρόπος εισαγωγής των δάνειων ρημάτων στη γλώσσα. Ύστερα, επιχειρείται μια σύγκριση ανάμεσα στα δεδομένα των χειρογράφων και των χαρακτηριστικών της σύγχρονης κρητικής, που ακολουθείται από μια λεπτομερή παρουσίαση του όλου ρηματικού συστήματος ∙ ιδιαίτερη προσοχή δόθηκε στις περιφράσεις του μέλλοντα, του παρακειμένου και του υπερσυντέλικου καθώς και σε μια δομή που φαίνεται πως δηλώνει την έννοια του «συντελεσμένου στο μέλλον». Επιπλέον, γίνεται αναφορά σε συγκεκριμένα συντακτικά φαινόμενα. Το συμπέρασμα που απορρέει είναι ότι τα χαρακτηριστικά της σύγχρονης κρητικής, στην πλειοψηφία τους, φαίνονται ήδη σχηματισμένα ως τα μέσα του 16ου αι.
description: This paper aims to present the verbal system of the 16th century’s Cretan dialect through the study of the notarial documents of Petros Castrofilacas (Candia, 1558 – 1559). After a historical introduction, necessary in understanding the degree of linguistic contact between Cretans and Venetians, we discuss the level of borrowing and the way by which loan-verbs were being inserted to the language. Then, a comparison is being made between the data at hand and the characteristics of modern Cretan dialect, followed by a detailed presentation of the verbal system in its entirety; special attention is given to the future, perfect and pluperfect periphrases, as well as to another structure that seems to express the notion of “perfectiveness in the future”. Furthermore, we mention certain syntactic phenomena. The final conclusion is that the characteristics of the modern Cretan dialect, were – in their majority - already formed by the 16th century.
Feedback Factory: Multiple faint radio-jets detected in a cluster at z=2
Creators: name: Kalita, Boris S.
name: Daddi, Emanuele
name: Coogan, Rosemary T.
name: Delvecchio, Ivan
name: Gobat, Raphael
name: Valentino, Francesco
name: Strazzullo, Veronica
name: Tremou, Evangelia
name: Elbaz, David
name: Gómez-Guijarro, Carlos
name: Finoguenov, Alexis
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of multiple faint radio sources, that we identify as AGN-jets, within CLJ1449+0856 at z=2 using 3 GHz VLA observations. We study the effects of radio-jet based kinetic feedback at high redshifts, which has been found to be crucial in low redshift clusters to explain the observed thermodynamic properties of their ICM. We investigate this interaction at an epoch featuring high levels of AGN activity and a transitional phase of ICM in regards to the likelihood of residual cold-gas accretion. We measure a total flux of $\rm 30.6 \pm 3.3~μJy$ from the 6 detected jets. Their power contribution is estimated to be $1.2 ~(\pm 0.6)~ \times 10^{44} ~\rm ergs~ s^{-1}$, although this value could be up to $4.7 ~ \times 10^{44} ~\rm ergs~ s^{-1}$. This is a factor $\sim 0.25 - 1.0$ of the previously estimated instantaneous energy injection into the ICM of CLJ1449+0856 from AGN outflows and star formation, that have already been found to be sufficient in globally offsetting the cooling flows in the cluster core. In line with the already detected abundance of star formation, this mode of feedback being distributed over multiple sites, contrary to a single central source observed at low redshifts, points to accretion of gas into the cluster centre. This also suggests a 'steady state' of the cluster featuring non cool-core like behaviour. Finally, we also examine the TIR-radio luminosity ratio for the known sample of galaxies within the cluster core and find that dense environments do not have any serious consequence on the compliance of galaxies to the IR-radio correlation.
Theory of vortices in hybridized ballistic/diffusive-band superconductors
Creators: name: Tanaka, K.
name: Eschrig, M.
name: Agterberg, D. F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the electronic structure in the vicinity of a vortex in a two-band superconductor in which the quasiparticle motion is ballistic in one band and diffusive in the other. This study is based on a model appropriate for such a case, that we have introduced recently [Phys. Rev. B 73, 220501(R) (2006)]. We argue that in the two-band superconductor MgB_2 such a case is realised. Motivated by the experimental findings on MgB_2, we assume that superconductivity in the diffusive band is ``weak'', i.e., mostly induced. We examine intriguing features of the order parameter, the current density, and the vortex core spectrum in the ``strong'' ballistic band under the influence of hybridization with the ``weak'' diffusive band. Although the order parameter in the diffusive band is induced, the characteristic length scales in the two bands differ due to Coulomb interactions. The current density in the vortex core is dominated by the contribution from the ballistic band, while outside the core the contribution from the diffusive band can be substantial, or even dominating. The current density in the diffusive band has strong temperature dependence, exhibiting the Kramer-Pesch effect when hybridization is strong. A particularly interesting feature of our model is the possibility of additional bound states near the gap edge in the ballistic band, that are prominent in the vortex centre spectra. This contrasts with the single band case, where there is no gap-edge bound state in the vortex centre. We find the above-mentioned unique features for parameter values relevant for MgB_2.
description: 17 pages, 21 figures
Mapping the viable parameter space for testable leptogenesis
Creators: name: Drewes, Marco
name: Georis, Yannis
name: Klarić, Juraj
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We for the first time map the range of active-sterile neutrino mixing angles in which leptogenesis is possible in the type I seesaw model with three heavy neutrinos with Majorana masses between 50 MeV and 100 TeV, covering the entire experimentally accessible mass range. Our study includes both,the asymmetry generation during freeze-in (ARS mechanism) and freeze-out (resonant leptotenesis) of the heavy neutrinos. The range of mixings for which leptogenesis is feasible is considerably larger than in the minimal model with only two heavy neutrinos and extends all the way up to the current experimental bounds. For such large mixing angles the HL-LHC could potentially observe a number of events that is large enough to compare different decay channels, a first step towards testing the hypothesis that these particles may be responsible for the origin of matter and neutrino masses.
description: 5 pages, 2 figures
Additional file 21 of Genome-wide identification, classification, and expression analysis of the JmjC domain-containing histone demethylase gene family in birch
Creators: name: Chen, Bowei
name: Ali, Shahid
name: Zhang, Xu
name: Zhang, Yonglan
name: Wang, Min
name: Zhang, Qingzhu
name: Xie, Linan
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 21: Figure S5. The count of BpJMJ genes with different classification of cis-acting elements.
Text of "Old Town Yagala"
Creators: name: Mansaray, Kondeh
name: Rolle, Nicholas
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: lma

description: 3 MOV and 3 corresponding WAV files. Text details the history of Yagala. It was recorded live in the Old Town Yagala ruins, using an iPhone and a Marantz recorder.
The rotational and divergent components of atmospheric circulation on tidally locked planets
Creators: name: Hammond, Mark
name: Lewis, Neil T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Tidally locked exoplanets likely host global atmospheric circulations with a superrotating equatorial jet, planetary-scale stationary waves and thermally-driven overturning circulation. In this work, we show that each of these features can be separated from the total circulation by using a Helmholtz decomposition, which splits the circulation into rotational (divergence free) and divergent (vorticity free) components. This technique is applied to the simulated circulation of a terrestrial planet and a gaseous hot Jupiter. For both planets, the rotational component comprises the equatorial jet and stationary waves, and the divergent component contains the overturning circulation. Separating out each component allows us to evaluate their spatial structure and relative contribution to the total flow. In contrast with previous work, we show that divergent velocities are not negligible when compared with rotational velocities, and that divergent, overturning circulation takes the form of a single, roughly isotropic cell that ascends on the day-side and descends on the night-side. These conclusions are drawn for both the terrestrial case and the hot Jupiter. To illustrate the utility of the Helmholtz decomposition for studying atmospheric processes, we compute the contribution of each of the circulation components to heat transport from day- to night-side. Surprisingly, we find that the divergent circulation dominates day-night heat transport in the terrestrial case and accounts for around half of the heat transport for the hot Jupiter. The relative contributions of the rotational and divergent components to day-night heat transport are likely sensitive to multiple planetary parameters and atmospheric processes, and merit further study.
description: Accepted for publication in Proceedings of the National Academy of Sciences. 11 pages, 10 figures
The Transit Light Curve (TLC) Project. II. Two Transits of the Exoplanet OGLE-TR-111b
Creators: name: Winn, Joshua N.
name: Holman, Matthew J.
name: Fuentes, Cesar I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As part of our ongoing effort to measure exoplanet sizes and transit times with greater accuracy, we present I band observations of two transits of OGLE-TR-111b. The photometry has an accuracy of 0.15-0.20% and a cadence of 1-2 minutes. We derive a planetary radius of 1.067 +/- 0.054 Jupiter radii and a stellar radius of 0.831 +/- 0.031 solar radii. The uncertainties are dominated by errors in the photometry, rather than by systematic errors arising from uncertainties in the limb darkening function or the stellar mass. Both the stellar radius and the planetary radius are in agreement with theoretical expectations. The transit times are accurate to within 30 seconds, and allow us to refine the estimate of the mean orbital period: 4.0144479 +/- 0.0000041 days.
description: To appear in AJ [16 pages]
Diapoma pyrrhopteryx Menezes & Weitzman 2011
Creators: name: Almirón, Adriana
name: Casciotta, Jorge
name: Říčanová, Štěpánka
name: Dragová, Klára
name: Piálek, Lubomir
name: Říčan, Oldřich
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Characiformes
Characidae
Diapoma
Diapoma pyrrhopteryx

description: Diapoma pyrrhopteryx. Morphometric data are given in Table 1.
According to Menezes & Weitzman (2011) and the specimens analyzed herein, Diapoma pyrrhopteryx is distinguished from its congeners known from Argentina by the presence of a posterior bony expansion of the opercular and subopercular bones; males with adipose fin; upper portion of dorsal and caudal fins, posterior portion of pelvic fins, and ventral portion of anal-fin anterior lobe red in live specimens. The only specimen with red fins collected in the arroyo Toro presented some differences with respect to the description mentioned above (fig. 2).
The following values of meristic characters were counted in the specimens analyzed: dorsal-fin rays 2i,8; anal-fin rays 4i,24-27; pectoral-fin rays i,11; pelvic-fin rays i,6; lateral line scales incomplete with perforated scales in the anterior segment 11-14 followed by 8-10 non-perforated scales and a last segment with 13-16 perforated scales; lateral series scales 36-37, and scales between dorsal-fin origin and anal-fin origin 10-12.
All specimens discussed herein were collected in the río Uruguay basin, arroyo Toro, affluent of the río Pepirí Guazú, above the Moconá falls (figs. 1, 3).
Material examined:
MLP 10915, 4 specimens, 1 c&s; 51.9-53.1 mm SL; Argentina, río Uruguay basin, arroyo Toro, 26°36’32.8”S – 53°44’13.9”W.; coll. Casciotta et al. 19.Feb.2012
description: Published as part of Almirón, Adriana, Casciotta, Jorge, Říčanová, Štěpánka, Dragová, Klára, Piálek, Lubomir & Říčan, Oldřich, 2016, First record of Diapoma pyrrhopteryx Menezes & Weitzman, 2011 (Characiformes: Characidae) from freshwaters of Argentina., pp. 1-3 in Ichthyological Contributions of PecesCriollos 40 on page 2, DOI: 10.5281/zenodo.11558286
The A-shell star Phi Leo revisited: its photospheric and circumstellar spectra
Creators: name: Eiroa, C.
name: Montesinos, B.
name: Rebollido, I.
name: Henning, Th.
name: Launhardt, R.
name: Maldonado, J.
name: Meeus, G.
name: Mora, A.
name: Rivière-Marichalar, P.
name: Villaver, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Variable red- and blue-shifted absorption features observed in the Ca ii K line towards the A-type shell star $ϕ$ Leo have been suggested by us in a previous work to be likely due to solid, comet-like bodies in the circumstellar (CS) environment. Our aim is to expand our observational study of this object to other characteristic spectral lines of A-type photospheres as well as to lines arising in their CS shells. We have obtained more than 500 high-resolution optical spectra collected at different telescopes from December 2015 to January 2019. We have analysed some photospheric lines, in particular Ca i 4226 Å~and Mg ii 4481 Å, as well as the circumstellar shell lines Ca ii H\&K, Ca ii IR triplet, Fe ii, Ti ii, and the Balmer lines H$α$ and H$β$. Our observational study reveals that $ϕ$ Leo is a variable $δ$ Scuti star whose spectra show remarkable dumps and bumps superimposed on the photospheric line profiles, which vary their strength and sharpness, propagate from blue- to more red-shifted radial velocities and persisting during a few hours, likely produced by non-radial pulsations. At the same time, all shell lines present an emission at $\sim$3 km/s centered at the core of the CS features, and two variable absorption minima at both sides of the emission. The variations observed in the Ca ii H\&K, Fe ii and Ti ii lines occur at any time scale from minutes to days and observing run, but without any clear correlation or recognizable temporal pattern among the different lines. In the case of H$α$ the CS contribution is also variable in just one of the observing runs. We suggest that $ϕ$ Leo is a rapidly rotating $δ$ Scuti star surrounded by a variable, (nearly) edge-on CS disk possibly re-supplied by the $δ$ Scuti pulsations.
description: Accepted in Astronomy&Astrophysics. 15 pages, 15 figures. C1 table available on CDS
New abundance determinations in z < 1.5 QSO absorbers: seven sub-DLAs and one DLA
Creators: name: Meiring, Joseph D.
name: Lauroesch, James T.
name: Kulkarni, Varsha P.
name: Peroux, Celine
name: Khare, Pushpa
name: York, Donald G.
name: Crotts, Arlin P. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present chemical abundance measurements from high resolution observations of 7 sub-damped Lyman-alpha absorbers and 1 damped Lyman-alpha system at z<1.5. Three of these objects have high metallicity, with near or super-solar Zn abundance. Grids of Cloudy models for each system were constructed to look for possible ionization effects in these systems. For the systems in which we could constrain the ionization parameter, we find that the ionization corrections as predicted by the Cloudy models are generally small and within the typical error bars (~0.15 dex), in general agreement with previous studies. The Al III to Al II ratio for these and other absorbers from the literature are compared, and we find that while the sub-DLAs have a larger scatter in the Al III to Al II ratios than the DLAs, there appears to be little correlation between the ratio and N(H I). The relationship between the metallicity and the velocity width of the profile for these systems is investigated. We show that the sub-DLAs that have been observed to date follow a similar trend as DLA absorbers, with the more metal rich systems exhibiting large velocity widths. We also find that the systems at the upper edge of this relationship with high metallicities and large velocity widths are more likely to be sub-DLAs than DLA absorbers, perhaps implying that the sub-DLA absorbers are more representative of massive galaxies.
description: 15 pages, 15 Figures, Accepted by MNRAS, updated references and authors
Tax evasion study in a society realized as a diluted Ising model with competing interactions
Creators: name: Giraldo-Barreto, Julian
name: Restrepo, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this research, the tax evasion percentage, as order parameter, of a system of individuals or agents inscribed in a $N = L \times L$ 2D square grid is computed. The influence of local environment over each agent is quantified both through competitive exchange integrals (ferromagnetic and antiferromagnetic bonds) and dangling bonds randomly distributed, which allows to identify the system with disordered ternary alloys of the type $\mathrm{A_\textit{p}B_\textit{x}C_\textit{q}}$ with a certain stoichiometry $(p,x,q)$ particular of each society. Our proposal is based on the so-called spin glass phase present in magnetic systems characterized by disorder, dilution and competitive interactions where magnetic frustration can take place, resembling the way as an individual or agent in a society is able to face a decision. In this sense, agents are identified as Ising spins, which can take two possible values ($σ= \pm 1$), in correspondence with a two-state system where agents can be tax compliant or not. Such an identification between social and physical variables, as well as parameters like an external applied magnetic field or temperature, are topic of discussion in this investigation. Thermalization of the observables is carried out by means of the heat bath algorithm. Other social variables, such as the audit period, and its effects over the percentage of evasion, are used to analyze the behavior of tax evasion in Colombia, however the model can be applied to any country.
Strange Particles and Neutron Stars - Experiments at Gsi
Creators: name: Senger, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Experiments on strangeness production in nucleus-nucleus collisions at SIS energies address fundamental aspects of modern nuclear physics: the determination of the nuclear equation-of-state at high baryon densities and the properties of hadrons in dense nuclear matter. Experimental data and theoretical results will be reviewed. Future experiments at the FAIR accelerator aim at the exploration of the QCD phase diagram at highest baryon densities.
description: %Invited talk given at the International Invited talk given at the International Symposium on Heavy Ion Physics (ISHIP 2006) April 3-6 2006, FIAS, Frankfurt, Germany Frankfurt, Germany
Η Eπιστολογραφία του Αγίου Νεκταρίου
Creators: name: Ψουρούκα, Ευαγγελία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Άγιος Νεκτάριος Πενταπόλεως-Επιστολές
Saint Nectarios of Pentapolis-Epistles

description: Η παρούσα διπλωματική εργασία πραγματεύεται την επιστολογραφία του Αγίου Νεκταρίου Πενταπόλεως και σκοπός ήταν η παρουσίαση και μελέτη αυτής. Προσπαθήσαμε να παρουσιάσουμε το δυνατόν διεξοδικότερα την δημοσιευμένη και εκδεδομένη επιστολογραφία του αγίου Νεκταρίου, παρότι είναι ιδιαίτερα εκτενής. Αρχικά, αναφερθήκαμε στο ιδιαίτερο λογοτεχνικό είδος της επιστολογραφίας γενικά και ειδικότερα του Αγίου Νεκταρίου. Στη συνέχεια προσεγγίσαμε το περιεχόμενο των επιστολών του Αγίου Νεκταρίου εφόσον αρχικά προβήκαμε σε μια τριμερή διάκριση αυτών όσον αφορά το χρόνο της συγγραφής τους. Η προσέγγιση αυτή έγινε θεματολογικά αφενός και αφετέρου με βάση τους παραλήπτες αυτών. Στο τρίτο κεφάλαιο αναφερόμαστε στην βασική θεματολογία που αναδύεται μέσα από τις κατηχητικές κυρίως επιστολές του Αγίου Νεκταρίου που αφορούν τόσο πρακτικά θέματα όπως η ίδρυση της Ιεράς Μονής της Αγίας Τριάδος όσο και πνευματικά και ποιμαντικά.
description: The present thesis the epistolography of Saint Nectarios of Pentapolis and the aim was its presentation and study. We made an effort to present as detailed as we could the issued and published epistolography of Saint Nectarios, although is notably extensive. At first we make a reference to the particular literature genre of epistolography in general and especially the epistolography of Saint Nectarios of Pentapolis. Then we approached the content of the epistles since we came forward in a triplex division based on the time of their creation/writing. The approach of them was based from one hand on the different topics that are take place in the epistles and on the other hand was based on the receivers of the epistles. In the third chapter we are referring to the basic topics that they come up mainly through the preachy epistles of Saint Nectarios concerning practical subjects as the establishment of the Holly Convent of Holly Trinity and also spiritual and guiding ones.
Homogenization of periodic linear degenerate PDEs
Creators: name: Hairer, Martin
name: Pardoux, Etienne
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B27, 76M50

description: It is well-known under the name of `periodic homogenization' that, under a centering condition of the drift, a periodic diffusion process on R^d converges, under diffusive rescaling, to a d-dimensional Brownian motion. Existing proofs of this result all rely on uniform ellipticity or hypoellipticity assumptions on the diffusion. In this paper, we considerably weaken these assumptions in order to allow for the diffusion coefficient to even vanish on an open set. As a consequence, it is no longer the case that the effective diffusivity matrix is necessarily non-degenerate. It turns out that, provided that some very weak regularity conditions are met, the range of the effective diffusivity matrix can be read off the shape of the support of the invariant measure for the periodic diffusion. In particular, this gives some easily verifiable conditions for the effective diffusivity matrix to be of full rank. We also discuss the application of our results to the homogenization of a class of elliptic and parabolic PDEs.
Οικονομική ανάλυση βιολογικού δίκοκκου σιταριού στην Ελλάδα.
Creators: name: Σαμαράς, Κωνσταντίνος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Δίκοκκο σιτάρι
Αποτελεσματικότητα-Δημητριακά
Triticum dicoccum
Effectiveness-Cereals

description: Η παρούσα διατριβή έχει ως στόχο να διερευνήσει την φήμη της αποτελεσματικότητας, που έχει δημιουργηθεί, σχετικά με το θέμα του ‘ελληνικού’ δίκοκκου σιταριού ολικής άλεσης (Triticum dicoccum), ονομαζόμενο ως ‘ζέα’, στην Ελλάδα. Χρησιμοποιήθηκαν δεδομένα από 20 γεωργικές εκμεταλλεύσεις παραγωγών του Νομού Λάρισας, στη περιοχή της Ελασσόνας. Η εύρεση της αποτελεσματικότητας πραγματοποιήθηκε με την περιβάλουσα ανάλυση δεδομένων (Data Envelopment Analysis, DEA). Τα αποτελέσματα της έρευνας έδειξαν ότι η καλλιέργεια του δίκοκκου σιταριού ολικής άλεσης στην Ελλάδα αποτελεί ένα σημαντικό ζήτημα επιχειρηματικής ανάπτυξης. Σε ένα μεγαλύτερο βαθμό έρευνας, δημιουργήθηκε μια πειραματική έκταση 6 στρεμ. δίκοκου σιταριού, στη περιοχή της Λάρισας. Αποτέλεσμα του πειράματος ήταν η συγκομιδή δίκοκκου σιταριού (αλεύρι) και η δημιουργία 4 ειδών ζυμαρικών τα οποία προωθήθηκαν στην αγορά της Θεσσαλονίκης. Επίσης, το συγκεκριμένο εγχείρημα παρουσιάστηκε στο πρόγραμμα υποτροφιών Αγγελόπουλος, που πραγματοποιήθηκε στο πανεπιστήμιο του Μπέρκλευ, στην Αμερική στις 1-3 Απριλίου, 2016. Εντάχθηκε και επιχορηγήθηκε σε ένα πρόγραμμα υποτροφιών Αγγελόπουλος – Κλίντον, υπο την υποστήριξη των παραπάνω ιδρυμάτων.
description: This dissertation thesis aimed at researching the ambiguous efficiency of Triticum dicoccum, named ‘Zea’ wheat, in Greece. Data were collected from 20 producers, in Elassona, Larisa. The methodology employed to estimate technical efficiency was Data Envelopment Analysis (DEA). Findings showed that the cultivation of Triticum dicoccum is an important issue of business development. To further investigate the agribusiness characteristics, an experimental area of one acre was created in the area of Larisa. This resulted in the harvest of Triticum dicoccum flour and the creation of five kinds of pasta, that were promoted in the market of Thessaloniki. Moreover, this research was presented in the scholarship programme of Angelopoulos Foundation, that took place in Berkley University, in the USA on 1 to 3 of April, 2016. It has been conducted and funded with a scholarship of the Angelopoulos- Clinton Fellowship, with the support of the Angelopoulos and Clinton Foundation.
The effect of rippling on the mechanical properties of graphene
Creators: name: Lopez-Polin, Guillermo
name: Gomez-Navarro, Cristina
name: Gomez-Herrero, Julio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Graphene is the stiffest material known so far but, due to its one-atom thickness, it is also very bendable. Consequently, free-standing graphene exhibit ripples that has major effects on its elastic properties. Here we will summarize three experiments where the influence of rippling is essential to address the results. Firstly, we observed that atomic vacancies lessen the negative thermal expansion coefficient of free-standing graphene. We also observed an increase of the Young's modulus with global applied strain and with the introduction of small density defects that we attributed to the decrease of rippling. Here, we will focus on a surprising feature observed in the data: the experiments consistently indicate that only the rippling with wavelengths between 5-10nm influences the mechanics of graphene. The rippling responsible of the negative TEC and anomalous elasticity is thought to be dynamic, i.e. flexural phonons. However, flexural phonons with these wavelengths should have minor effects on the mechanics of graphene, therefore other mechanisms must be considered to address our observations. We propose static ripples as one of the key elements to correctly understand the thermomechanics of graphene and suggest that rippling arises naturally due to a competition of symmetry breaking and anharmonic fluctuations.
Η οικία Καραπαναγιωτίδη στην Ξάνθη. Μελέτη αποκατάστασης και επανάχρησης.
Creators: name: Μπραζιώτη, Ευαγγελία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Ξάνθη-Αποκατάσταση
Επανάχρηση
Xanthi-Conservation
Reuse

description: Αντικείμενο της διπλωματικής εργασίας αποτελεί η μελέτη της οικίας Καραπαναγιωτίδη στην Ξάνθη. Το κτήριο βρίσκεται επί των οδών Πυγμαλίωνος Χρηστίδη και Βύρωνος. Ανήκει στην Παλαιά Πόλη της Ξάνθης, στη συνοικία του Ακάθιστου Ύμνου. Το έτος κατασκευής του προσδιορίζεται στα μέσα του δεκάτου ενάτου αιώνα, κατά τη δεύτερη φάση ανοικοδόμησης της πόλης, περίοδο όπου ακμάζει το εμπόριο καπνών. Έχει χαρακτηριστεί ως «έργο τέχνης» από το ΥΠ.ΠΟ. Σήμερα το κτίσμα ανήκει στο Δήμο Ξάνθης, βρίσκεται σε κακή κατάσταση διατήρησης και παραμένει από τη δεκαετία του ενενήντα κενό. Πρόκειται για γωνιακό, τριώροφο κτήριο, σχήματος Π που μορφολογικά και τυπολογικά εμπίπτει στα κτίσματα της Μακεδονικής αρχιτεκτονικής. Στο υπόγειο αναπτύσσονταν βοηθητικές χρήσεις, ενώ το ισόγειο και ο όροφος αποτελούσαν την κατοικία της οικογένειας. Το δομικό σύστημα του κτηρίου αποτελούν οι περιμετρικοί τοίχοι από λιθοδομή, σε συνδυασμό με τον ξύλινο σκελετό. Χωρίζεται σε τρεις οικοδομικές φάσεις, οι οποίες οριοθετούνται χρονικά από τις αλλαγές στην ιδιοκτησία. Βασική αρχή σε κάθε πρόταση αποκατάστασης αποτελεί η ανάδειξη των μορφολογικών και τυπολογικών χαρακτηριστικών κάθε κτηρίου. Η ένταξη της νέας χρήσης πρέπει να γίνεται με σεβασμό στο υφιστάμενο κτήριο και στα υλικά κατασκευής του. Έτσι, προτείνεται η μεταφορά της Υπηρεσίας Νεωτέρων Μνημείων και Τεχνικών Έργων Ανατολικής Μακεδονίας και Θράκης.
description: The aim of this master thesis is the presentation of the residence Karapanagiotidi in Xanthi. The mansion is located on the corner of Pygmalionos Christidi and Byronos streets. It belongs in the Old Town of Xanthi, in the district of the Akathistos Ymnos. Karapanagiotidi’s residence has been described as "work of art" by the Greek Ministry of Culture. Today it belongs to the Municipality of Xanthi, is at a bad satiation of conservation. The mansion is a corner building, consisted of three floors, shaped in a Π format and morphologically and typologically belongs to Macedonian architecture residences. The basement used as storage area, while the ground and first floors used as the residence of the family. The structural system of the building consists of the perimetric masonry of stones, combined with wooden frames in the upper floor. The building is divided into three construction phases, based on different ownerships. Integration of the new use should be made with respect to the existing building and it’s construction materials. Based on the above criteria and in conjunction with a compatible building program is proposed the transfer into the mansion of Modern Monuments Service and Construction of Eastern Macedonia and Thrace.