cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Transport properties of a periodically driven superconducting single electron transistor
Creators: name: Romito, Alessandro
name: Montangero, Simone
name: Fazio, Rosario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss coherent transport of Cooper pairs through a Cooper pair shuttle. We analyze both the DC and AC Josephson effect in the two limiting cases where the charging energy $E_C$ is either much larger or much smaller than the Josephson coupling $E_J$. In the limit $E_J \ll E_C$ we present the detailed behavior of the critical current as a function of the damping rates and the dynamical phases. The AC effect in this regime is very sensitive to all dynamical scales present in the problem. The effect of fluctuations of the external periodic driving is discussed as well. In the opposite regime the system can be mapped onto the quantum kicked rotator, a classically chaotic system. We investigate the transport properties also in this regime showing that the underlying classical chaotic dynamics emerges as an incoherent transfer of Cooper pairs through the shuttle. For an appropriate choice of the parameters the Cooper pair shuttle can exhibit the phenomenon of dynamical localization. We discuss in details the properties of the localized regime as a function of the phase difference between the superconducting electrodes and the decoherence due to gate voltage fluctuations. Finally we point how dynamical localization is reflected in the noise properties of the shuttle.
description: 22 pages, 7 figures; v3 (published version): added references, improved readability
The spatial clustering of ultraluminous infrared galaxies over 1.5
Creators: name: Farrah, Duncan
name: Lonsdale, Carol
name: Borys, Colin
name: Fang, Fan
name: Waddington, Ian
name: Oliver, Seb
name: Rowan-Robinson, Michael
name: Babbedge, Tom
name: Shupe, David
name: Polletta, Mari
name: Smith, Harding
name: Surace, Jason
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements of the spatial clustering of galaxies with stellar masses >10^11Msun, infrared luminosities >10^12 Lsun, and star formation rates >200Msun per year in two redshift intervals; 1.51, both starbursts and AGN. Adopting plausible models for the growth of DM haloes with redshift, then the haloes hosting the 21 signpost stellar buildup in galaxies that will reside in clusters at z=0, with ULIRGs at increasing redshifts signposting the buildup of stars in galaxies that will reside in increasingly rich clusters.
description: ApJ Letters, accepted. Updated to correct an error in the correlation length calculations
Matter without matter: novel Kaluza-Klein spacetime in Einstein-Gauss-Bonnet gravity
Creators: name: Maeda, Hideki
name: Dadhich, Naresh
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider Einstein-Gauss-Bonnet gravity in $n(\ge 6)$-dimensional Kaluza-Klein spacetime ${\ma M}^{4} \times {\ma K}^{n-4}$, where ${\ma K}^{n-4}$ is the Einstein space with negative curvature. In the case where ${\ma K}^{n-4}$ is the space of negative constant curvature, we have recently obtained a new static black-hole solution (Phys. Rev. D {\bf 74}, 021501(R) (2006), hep-th/0605031) which is a pure gravitational creation including Maxwell field in four-dimensional vacuum spacetime. The solution has been generalized to make it radially radiate null radiation representing gravitational creation of charged null dust. The same class of solutions though exists in spacetime ${\ma M}^{d} \times {\ma K}^{n-d}$ for $d=3,4$, however the gravitational creation of the Maxwell field is achieved only for $d=4$. Also, Gauss-Bonnet effect could be brought down to ${\ma M}^d$ only for $d=4$. Further some new exact solutions are obtained including its analogue in Taub-NUT spacetime on ${\ma M}^4$ for $d=4$.
description: 13 pages, 1 figure, result for $d=2$ corrected, 3 references added, final version to appear in Phys. Rev. D
Formation of Earth-like Planets During and After Giant Planet Migration
Creators: name: Mandell, Avi M.
name: Raymond, Sean N.
name: Sigurdsson, Steinn
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Close-in giant planets are thought to have formed in the cold outer regions of planetary systems and migrated inward, passing through the orbital parameter space occupied by the terrestrial planets in our own Solar System. We present dynamical simulations of the effects of a migrating giant planet on a disk of protoplanetary material and the subsequent evolution of the planetary system. We numerically investigate the dynamics of post-migration planetary systems over 200 million years using models with a single migrating giant planet, one migrating and one non-migrating giant planet, and excluding the effects of a gas disk. Material that is shepherded in front of the migrating giant planet by moving mean motion resonances accretes into "hot Earths", but survival of these bodies is strongly dependent on dynamical damping. Furthermore, a significant amount of material scattered outward by the giant planet survives in highly excited orbits; the orbits of these scattered bodies are then damped by gas drag and dynamical friction over the remaining accretion time. In all simulations Earth-mass planets accrete on approximately 100 Myr timescales, often with orbits in the Habitable Zone. These planets range in mass and water content, with both quantities increasing with the presence of a gas disk and decreasing with the presence of an outer giant planet. We use scaling arguments and previous results to derive a simple recipe that constrains which giant planet systems are able to form and harbor Earth-like planets in the Habitable Zone, demonstrating that roughly one third of the known planetary systems are potentially habitable.
description: Submitted to ApJ, accepted pending revisions
A Nearby Galaxy Perspective on Dust Evolution. Scaling relations and constraints on the dust build-up in galaxies with the DustPedia and DGS samples
Creators: name: Galliano, Frédéric
name: Nersesian, Angelos
name: Bianchi, Simone
name: De Looze, Ilse
name: Roychowdhury, Sambit
name: Baes, Maarten
name: Casasola, Viviana
name: Letizia
name: Cassará, P.
name: Dobbels, Wouter
name: Fritz, Jacopo
name: Galametz, Maud
name: Jones, Anthony P.
name: Madden, Suzanne C.
name: Mosenkov, Aleksandr
name: Xilouris, Emmanuel M.
name: Ysard, Nathalie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Methods. We have modelled a sample of ~800 nearby galaxies, spanning a wide range of metallicity, gas fraction, specific star formation rate and Hubble stage. We have derived the dust properties of each object from its spectral energy distribution. Through an additional level of analysis, we have inferred the timescales of dust condensation in core-collapse supernova ejecta, grain growth in cold clouds and dust destruction by shock waves. Throughout this paper, we have adopted a hierarchical Bayesian approach, resulting in a single large probability distribution of all the parameters of all the galaxies, to ensure the most rigorous interpretation of our data. Results. We confirm the drastic evolution with metallicity of the dust-to-metal mass ratio (by two orders of magnitude), found by previous studies. We show that dust production by core-collapse supernovae is efficient only at very low-metallicity, a single supernova producing on average less than ~0.03 Msun/SN of dust. Our data indicate that grain growth is the dominant formation mechanism at metallicity above ~1/5 solar, with a grain growth timescale shorter than ~50 Myr at solar metallicity. Shock destruction is relatively efficient, a single supernova clearing dust on average in at least ~1200 Msun/SN of gas. These results are robust when assuming different stellar initial mass functions. In addition, we show that early-type galaxies are outliers in several scaling relations. This feature could result from grain thermal sputtering in hot X-ray emitting gas, an hypothesis supported by a negative correlation between the dust-to-stellar mass ratio and the X-ray photon rate per grain. Finally, we confirm the well-known evolution of the aromatic-feature-emitting grain mass fraction as a function of metallicity and interstellar radiation field intensity. Our data indicate the relation with metallicity is significantly stronger.
description: 64 pages, 36 figures, accepted for publication in Astronomy & Astrophysics
The Japanese university club and the hierarchical notion of gender role reproduction
Creators: name: Vincenti, James J.
Publisher: name: University of British Columbia
Year: 2009

description: Although traditional depictions of gender in ancient Japanese mythology continue to help define gender in Japanese culture, such recent litigation as the Equal Employment Opportunity Act and the Childcare Leave Act signal change in these roles. This study explores the relationship between the Japanese hierarchical social structure and the parameters of the gender territories of women and men in a university club. Employing a single case (embedded) design, this study utilized the networks of former members (students who began their studies from 1953 to 1989) of Oendan (the "Cheering Club") at a private university in central Japan. Oendan's two sections, Leader-bu for men and Cheerleader-bu for women, have utterly different atmospheres. Leader-bu stresses daily rigorous and physically punishing practices in a highly disciplined atmosphere, whereas Cheerleader-bu more closely resembles its North American counterpart. To fully examine the differences between the two sections, I divided the case into three stages: (a) an historical analysis, (b) a survey, and (c) personal interviews. The results reflect an attitude that a perceived difference in physical strength and a strong sense of "tradition" inhibit true equality between the genders. Although most men may acquiesce in gender equality in an abstract sense, they also understand that, in reality, this is impossible because of the physical differences between the sexes. Leader-bu members continue to reinforce the importance of tradition year after year because they believe that they are benefiting, both personally and socially, from traditional beliefs and customs. Although victims of this belief system, they feel compelled to reproduce it. In reproducing it, however, they also must suffer from the lack of freedom that accompanies it.
Phase-field Fracture Modelling of Thin Monolithic and Laminated Glass Plates under Quasi-static Bending
Creators: name: Schmidt, Jaroslav
name: Zemanová, Alena
name: Zeman, Jan
name: Šejnoha, Michal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: A phase-field description of brittle fracture is employed in the reported four-point bending analyses of monolithic and laminated glass plates. Our aims are: (i) to compare different phase-field fracture formulations applied to thin glass plates, (ii) to assess the consequences of the dimensional reduction of the problem and mesh density and refinement, and (iii) to validate for quasi-static loading the time/temperature-dependent material properties we derived recently for two commonly used polymer foils made of Polyvinyl Butyral or Ethylene-Vinyl Acetate. As the nonlinear response prior to fracture, typical of the widely used Bourdin-Francfort-Marigo model, can lead to a significant overestimation of the response of thin plates under bending, the numerical study investigates two additional phase-field fracture models providing the linear elastic phase of the stress-strain diagram. The typical values of the critical fracture energy and tensile strength of glass lead to a phase-field length-scale parameter that is challenging to resolve in the numerical simulations. So, we show how to determine the fracture energy concerning the applied dimensional reduction and the value of the length-scale parameter relative to the thickness of the plate. The comparison shows that the phase-field models provide very good agreement with the measured stresses and resistance of laminated glass, despite the fact that only one/two cracks localised using the quasi-static analysis, whereas multiple cracks evolved during the experiment. It has also been observed that the stiffness and resistance of the partially fractured laminated glass can be well approximated using a 2D plane-stress model with initially predefined cracks, which provides a better estimation than the one-glass-layer limit.}
description: 29 pages, 20 figures, and 6 tables
Η αποζημίωση πελατείας στη σύμβαση αποκλειστικής διανομής και οι προϋποθέσεις εφαρμογής της:
Creators: name: Ζδράγκας, Νικόλαος Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Αποζημίωση πελατείας
Αποκλειστική διανομής
Customer compensation
Exclusive commercial distribution agreement

description: Στόχος της παρούσης είναι στο 1ο μέρος η αναζήτηση της νομικής φύσης της αποζημίωσης πελατείας του π.δ. 219/1991 του εμπορικού αντιπροσώπου, η ουσία του θεσμού της αποζημίωσης πελατείας, οι προϋποθέσεις γέννησης της εν λόγω αξίωσης και η διάκρισή της από την αποζημίωση του κοινού δικαίου. Στο 2ο μέρος της παρούσης αναλύονται τα κριτήρια και οι προϋποθέσεις αναλογικής εφαρμογής του π.δ. 219/1991 για τους εμπορικούς αντιπροσώπους στη σύμβαση αποκλειστικής διανομής, οι δικαιοπολιτικοί λόγοι που οδήγησαν τον Έλληνα νομοθέτη στην επέκταση των διατάξεων του π.δ. 219/1991 στην ως άνω σύμβαση και το εάν ήταν επιτυχής η νομοθετική παρέμβαση με το άρθρο 14 παρ. 4 του Ν. 3557/2007, που επεκτείνει την αναλογική εφαρμογή του π.δ. 219/1991 μόνο στη σύμβαση αποκλειστικής διανομής, χωρίς να λαμβάνει υπόψη τις υπόλοιπες διαρκείς συμβάσεις διαμεσολάβησης, όπως η παραγγελιοδοχική αντιπροσωπεία και η πρακτορεία. Τέλος, γίνεται μια αναφορά στις δίδυμες αποφάσεις της νομολογίας της Ολομέλειας του Αρείου Πάγου (ΟλΑΠ 15/2013 και 16/2013) σχετικά με το ζήτημα της αναλογικής εφαρμογής των διατάξεων του π.δ. 219/1991 και στις λοιπές διαρκείς συμβάσεις διαμεσολάβησης.
description: Aim of the first part of the thesis is the research of the legal status of customer compensation according to the presidential decree 219/1991 for the commercial agent, the essence of the above statute, the conditions of the relevant claim and how to distinguish the commercial compensation from the common compensation. In the second part of the thesis an effort is made to analyze the standards and the conditions of proportional application of the presidential decree 219/1991 for the commercial agent in exclusive commercial distribution agreement, the reasons that forced the Greek legislator into extending the provisions of presidential decree 219/1991 in the former commercial arrangement, as well as the answer to the question if the legislator’s intervention with the Article 14,4 of the Law 3557/2007 that extends the proportional application of the presidential decree 219/1991 only in exclusive commercial distribution agreement was successful or not, without taking account of the rest forms of intermediation commercial agreements, such as commercial contract and factoring. Last but not least, a reference to the twin decisions of the assembly of the Supreme Court is made (judicial decisions 15/2013 and 16/2013) as it comes to the proportional application of the presidential decree 219/1991 in the rest forms of intermediation commercial agreements.
The distribution of ND2H in LDN1689N
Creators: name: Gerin, Maryvonne
name: Lis, Dariuscz C.
name: Philipp, Sabine
name: Güsten, Rolf
name: Roueff, Evelyne
name: Reveret, Vincent
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Finding tracers of the innermost regions of prestellar cores is important for understanding their chemical and dynamical evolution before the onset of gravitational collapse. While classical molecular tracers, such as CO and CS, have been shown to be strongly depleted in cold, dense gas by condensation on grain mantles, it has been a subject of discussion to what extent nitrogen-bearing species, such as ammonia, are affected by this process. As deuterium fractionation is efficient in cold, dense gas, deuterated species are excellent tracers of prestellar cores. A comparison of the spatial distribution of neutral and ionized deuterated species with the dust continuum emission can thus provide important insights into the physical and chemical structure of such regions. We study the spatial distribution of the ground-state 335.5 GHz line of ND2H in LDN1689N, using APEX, and compare it with the distribution of the DCO+(3--2) line, as well as the 350 micron dust continuum emission observed with the SHARC~II bolometer camera at CSO. While the distribution of the ND2H emission in LDN1689N is generally similar to that of the 350 microns dust continuum emission, the peak of the ND2H emission is offset by ~10'' to the East from the dust continuum and DCO+ emission peak. ND2H and ND3 share the same spatial distribution. The observed offset between the ND2H and DCO+ emission is consistent with the hypothesis that the deuterium peak in LDN1689N is an interaction region between the outflow shock from IRAS16293--2422 and the dense ambient gas. We detect the J = 4 - 3 line of H13CO+ at 346.998 GHz in the image side band serendipitously. This line shows the same spatial distribution as DCO+(3--2), and peaks close to the 350 mic emission maximum which provides further support for the shock interaction scenario.
description: 4 pages Accepted by Astronomy and Astrophysics, special APEX edition
The approximately universal shapes of epidemic curves in the Susceptible-Exposed-Infectious-Recovered (SEIR) model
Creators: name: Heng, Kevin
name: Althaus, Christian L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Compartmental transmission models have become an invaluable tool to study the dynamics of infectious diseases. The Susceptible-Infectious-Recovered (SIR) model is known to have an exact semi-analytical solution. In the current study, the approach of Harko et al. (2014) is generalised to obtain an approximate semi-analytical solution of the Susceptible-Exposed-Infectious-Recovered (SEIR) model. The SEIR model curves have nearly the same shapes as the SIR ones, but with a stretch factor applied to them across time that is related to the ratio of the incubation to infectious periods. This finding implies an approximate characteristic timescale, scaled by this stretch factor, that is universal to all SEIR models, which only depends on the basic reproduction number and initial fraction of the population that is infectious.
description: This is a post-peer-review, pre-copyedit version of an article published in Scientific Reports (Springer Nature; www.nature.com/scientificreports). The final authenticated version is available online at: https://doi.org/10.1038/s41598-020-76563-8
Dynamical transport of asteroid fragments from the nu6 resonance
Creators: name: Ito, Takashi
name: Malhotra, Renu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A large disruption in the main asteroid belt can cause a large flux, an "asteroid shower", on the terrestrial planets. We quantitatively examine the hypothesis that such an event was the cause of the lunar late heavy bombardment (LHB). We performed numerical integrations of about 20000 test particles starting in the vicinity of the nu6 secular resonance in the main asteroid belt. The purpose of these integrations is to calculate, for each of the terrestrial planets, the collision probability of asteroids coming from an asteroid break-up event in the inner part of the main belt. Compared with previous studies, we simulate nearly two orders of magnitude larger number of particles, and we include the orbital effects of the eight planets, Mercury to Neptune. We also examined in detail the orbital evolution of asteroid fragments once they enter the Earth's activity sphere, including the effect of the Earth-Moon orbit. We obtained the collision probability, the distributions of impact velocities, impact positions, and impact angles of asteroid fragments on the Moon. The collision probability with the Moon (~0.1%) suggests that a fairly large parent body, 1000-1500 km in diameter, is required if the LHB event is to be ascribed to a single asteroid disruption. An even larger parent body is required for less favorable initial conditions than we investigated here. We conclude that an asteroid disruption event is not a viable explanation for the LHB.
description: 18 pages with 5 figures and 2 tables
Ο Ευρωπαϊκός Μηχανισμός Σταθερότητας: Εξέλιξη, δομή και πολιτική για το παρόν και το μέλλον της οικονομικής ένωσης των κρατών της Ευρωζώνης:
Creators: name: Βογιατζής, Ιωάννης Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ευρωπαϊκός Μηχανισμός Σταθερότητας
Ευρωζώνη
Οικονομική Κρίση
European Stability Mechanism
Eurozone
Financial Crisis

description: Σκοπός της Διπλωματικής αυτής εργασίας, είναι η παρουσίαση της εξέλιξης και δομής του Ευρωπαϊκού Μηχανισμού Σταθερότητας που δημιουργήθηκε εν όψει έκτακτων καταστάσεων, αλλά με μόνιμο χαρακτήρα. Περιλαμβάνει μια ιστορική αναδρομή σχετική με τα γεγονότα που διαδραματίστηκαν στις ΗΠΑ κατά την εμφάνιση της κρίσης, αλλά και μετέπειτα στην Ευρωζώνη όπου παρουσιάστηκε ένα πρωτοφανές αδιέξοδο. Παράλληλα, προβάλλονται οι ενέργειες που πραγματοποιήθηκαν με στόχο την εξεύρεση λύσεων, οι οποίες εν τέλει κατέληξαν στη δημιουργία του Ευρωπαϊκού Μηχανισμού Σταθερότητας. Σημαντικό μέρος της εργασίας αποτελεί η προβολή της δομής και των δυνατοτήτων του Μηχανισμού. Κλείνοντας, γίνεται αναφορά τόσο σε μελλοντικές κινήσεις με στόχο την αποτροπή ανάλογων κρίσεων, όσο και σε προβληματισμούς που εκφράστηκαν σε νομικό και πρακτικό επίπεδο.
description: The purpose of this thesis is the presentation of the evolution and structure of the European Stability Mechanism created under urgent circumstances, but has a permanent nature. It includes a historical overview of the events that took place in the US at the onset of the financial crisis, and also later in the Eurozone where an unprecedented deadlock occurred. At the same time, it cites the operations carried out aiming on solutions that ultimately led to the creation of the European Stability Mechanism. An important part of this thesis is about the structure and the possibilities of the Mechanism. Finally, it refers both to future movements in order to prevent such crises and also to various concerns expressed in legal and practical terms regarding the creation of the ESM.
Understanding stars close to the gap
Creators: name: Jao, Wei-Chun
name: Henry, Todd
name: Horch, Elliott
name: Vrijmoet, Eliot
name: Gemini Speckle Team
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars On The Main Sequence
speckle
Gaia
TESS
Low Mass Stars

description: Theoretical models show the main sequence gap is a result of the mixing of 3He during the merger of envelope and core convection zones. Unlike stars the either side of the gap, stars in a narrow mass range will go through instability phases, where their dynamos could switch between the αΩ dynamo like the Sun and Ω2 dynamo like late M dwarfs. At the same time, they show radial pulsation and their fluxes fluctuate, which resemble the pulsations observed in evolved stars like red giants and asymptotic giant branch stars. Consequently, they are a unique type of dwarf like no other on the main sequence. In this work, we would like to know 1) will the unstable interior structures result in observable characteristics such as flaring and spots, and 2) what is the mass range for these stars observationally? Here we present our preliminary results: 1) stars in the gap have higher percentage rate of activities than their adjacent regions, and 2) high resolution speckle results yield promising close binaries to yield dynamical masses in the future.
Effect of liquid drop model parameters on nuclear liquid gas phase transition
Creators: name: Chaudhuri, G.
name: Mallik, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The phenomenon of liquid-gas phase transition occurring in heavy ion collisions at intermediate energies is a subject of contemporary interest. In statistical models of fragmentation, the liquid drop model is generally used to calculate the ground state binding energies of the fragments. It is well known that the surface and symmetry energy of the hot fragments at the low density freeze out can be considerably modified. In addition to this, the level density parameter also has a wide variation. The effect of variation of these parameters is studied on fragmentation observables which are related to the nuclear liquid gas phase transition. The canonical thermodynamical model which has been very successful in describing the phenomenon of fragmentation is used for the study. The shift in transition temperature owing to the variation in liquid drop model parameters has been examined.
On the Progenitors of Two Type II-P Supernovae in the Virgo Cluster
Creators: name: Li, Weidong
name: Wang, Xiaofeng
name: Van Dyk, Schuyler D.
name: Cuillandre, Jean-Charles
name: Foley, Ryan J.
name: Filippenko, Alexei V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Direct identification of the progenitors of supernovae (SNe) is rare because of the required spatial resolution and depth of the archival data prior to the SN explosions. Here we report on the identification of the progenitors of two nearby SNe in the Virgo cluster: SN 2006my in NGC 4651 and SN 2006ov in M61. We obtained high-quality ground-based images of SN 2006my with the Canada-France-Hawaii Telescope, and are able to locate the site of the SN on pre-SN {\it Hubble Space Telescope} ({\it HST}) Wide Field Planetary Camera 2 images to a high precision (1$σ$ uncertainty of $\pm0\farcs$05). We pinpoint the site of SN 2006ov to within 0$\farcs$02 from {\it HST} Advanced Camera for Surveys images of the SN. We detected a red supergiant progenitor for each SN within the error circles, with an inferred zero-age main-sequence mass ($M_{\rm ZAMS}$) of $10^{+5}_{-3}$ $M_\odot$ and $15^{+5}_{-3}$ $M_\odot$ for the progenitors of SNe 2006my and 2006ov, respectively. The mass estimates for the progenitors of both SNe confirm a suggested trend that the most common Type II-plateau SNe originate from low-mass supergiants with $M_{\rm ZAMS} \approx 8$--20 $M_\odot$.
description: Accepted version with numerous minor changes
Comparison of existing aneurysm models and their path forward
Creators: name: Friesen, John
name: Bergner, Jonas
name: Khan, Mohammad Ibrahim Aftab
name: Triess, Stefan
name: Zoll, Andreas
name: Pelz, Peter F.
name: Adili, Farzin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The two most important aneurysm types are cerebral aneurysms (CA) and abdominal aortic aneurysms (AAA), accounting together for over 80\% of all fatal aneurysm incidences. To minimise aneurysm related deaths, clinicians require various tools to accurately estimate its rupture risk. For both aneurysm types, the current state-of-the-art tools to evaluate rupture risk are identified and evaluated in terms of clinical applicability. We perform a comprehensive literature review, using the Web of Science database. Identified records (3127) are clustered by modelling approach and aneurysm location in a meta-analysis to quantify scientific relevance and to extract modelling patterns and further assessed according to PRISMA guidelines (179 full text screens). Beside general differences and similarities of CA and AAA, we identify and systematically evaluate four major modelling approaches on aneurysm rupture risk: finite element analysis and computational fluid dynamics as deterministic approaches and machine learning and assessment-tools and dimensionless parameters as stochastic approaches. The latter score highest in the evaluation for their potential as clinical applications for rupture prediction, due to readiness level and user friendliness. Deterministic approaches are less likely to be applied in a clinical environment because of their high model complexity. Because deterministic approaches consider underlying mechanism for aneurysm rupture, they have improved capability to account for unusual patient-specific characteristics, compared to stochastic approaches. We show that an increased interdisciplinary exchange between specialists can boost comprehension of this disease to design tools for a clinical environment. By combining deterministic and stochastic models, advantages of both approaches can improve accessibility for clinicians and prediction quality for rupture risk.
description: 46 pages, 5 figures
Spontaneous and induced dynamic correlations in glass-formers II: Model calculations and comparison to numerical simulations
Creators: name: Berthier, Ludovic
name: Biroli, Giulio
name: Bouchaud, Jean-Philippe
name: Kob, Walter
name: Miyazaki, Kunimasa
name: Reichman, David
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study in detail the predictions of various theoretical approaches, in particular mode-coupling theory (MCT) and kinetically constrained models (KCMs), concerning the time, temperature, and wavevector dependence of multi-point correlation functions that quantify the strength of both induced and spontaneous dynamical fluctuations. We also discuss the precise predictions of MCT concerning the statistical ensemble and microscopic dynamics dependence of these multi-point correlation functions. These predictions are compared to simulations of model fragile and strong glass-forming liquids. Overall, MCT fares quite well in the fragile case, in particular explaining the observed crucial role of the statistical ensemble and microscopic dynamics, while MCT predictions do not seem to hold in the strong case. KCMs provide a simplified framework for understanding how these multi-point correlation functions may encode dynamic correlations in glassy materials. However, our analysis highlights important unresolved questions concerning the application of KCMs to supercooled liquids.
description: 23 pages, 12 figs
Lummi stories from high school: an ethnohistory of the fishing wars of the 1970s
Creators: name: Märker, Michael
Publisher: name: University of British Columbia
Year: 2009

description: This study focuses on the stories and experiences of Lummi students and their teachers at Ferndale High School from 1970 to 1980. The conditions of schooling for Lummis were affected by the climate of anti-Indian hostility which was fueled by the attitudes about Native fishing rights. This conflict, referred to as the "fishing wars," culminated in the landmark 1974 Boldt Decision. Throughout the 1970s the school was a site where the cultural and political conflicts of the community were played out. This study examines the ways that Lummi students saw the school and the choices they made for survival and resistance in a complex and adverse environment. It is also a study of the teachers who were at Ferndale during the 70s and how they conducted themselves in an explosive crosscultural educational setting. Utilizing an ethnohistorical perspective, this study brings forth the stories of both Lummi students and non- Native teachers and sets them within the context of the culture-conflict climate of Whatcom County in the 1970s. This study shows how political issues were inextricably welded to cultural issues for Indian students in the 1970s.
A 22 Degree Tidal Tail for Palomar 5
Creators: name: Grillmair, C. J.
name: Dionatos, O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using Data Release 4 of the Sloan Digital Sky Survey, we have applied an optimal contrast, matched filter technique to trace the trailing tidal tail of the globular cluster Palomar 5 to a distance of 18.5 degrees from the center of the cluster. This more than doubles the total known length of the tail to some 22 degrees on the sky. Based on a simple model of the Galaxy, we find that the stream's orientation on the sky is consistent at the 1.7 sigma level with existing proper motion measurements. We find that a spherical Galactic halo is adequate to model the stream over its currently known length, and we are able to place new constraints on the current space motion of the cluster.
description: 10 pages, 3 figures, accepted for publication in ApJ Letters
Strangeness production in high-multiplicity events
Creators: name: Siddikov, Marat
name: Schmidt, Iván
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we analyze in detail the production of strangeness in proton-proton collisions in the kinematics of large transverse momenta $p_{T}$ of produced hadrons. Using the color dipole framework, we estimated the production cross-sections for kaons, and demonstrated that the shapes of the $p_{T}$-dependence are in agreement with available experimental data. We also analyzed the self-normalized yields of strange hadrons as a function of multiplicity of co-produced hadrons, and found that the predictions are in agreement with the faster-than-linear growth seen in experimental data. Our description is largely parameter-free and complements our previous studies dedicated to the explanation of multiplicity enhancement of quarkonia, as well as $D$- and $B$-mesons.
description: 12 pages, 6 figures. This paper is a sequel to our earlier publications arXiv:1910.13579, arXiv:2003.13768, arXiv:2008.12446 and arXiv:2012.08284 dedicated to multiplicity dependence of high energy production cross-sections
Μελέτη για επίδραση της ελληνικής οικονομικής κρίσης στα γερμανικά επιτόκια.:
Creators: name: Πατσιόλας, Γεώργιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: επιτόκια
αυτοπαλίνδρομο
επιρροή
interest rates
arma
influence

description: Ο σκοπός της διπλωματικής εργασίας είναι η εξέταση της ενδεχόμενης επιρροής των γερμανικών επιτοκίων από την ελληνική κρίση. Η μεθοδολογία που εφαρμόστηκε ήταν το υπόδειγμα ARIMA με εξωγενή μεταβλητή. Βασική επιδίωξη της μεθοδολογίας αυτής είναι να δημιουργήσει ένα αυτοπαλίνδρομο μοντέλο το οποίο εν συνεχεία, με τη βοήθεια κάποιων οικονομετρικών ελέγχων, θα επαληθεύσει ή θα απορρίψει την αρχική μας παραδοχή. Για τον σκοπό αυτό χρησιμοποιήθηκαν ημερήσια δεδομένα των δεκαετών ομολόγων της Γερμανίας. Συγκεκριμένα, πραγματοποιήθηκε μία σειρά στατιστικών ελέγχων για την στασιμότητα και την κανονικότητα της χρονολογικής σειράς και εν συνεχεία υπολογίστηκε το μοντέλο πάνω στο οποίο εξήχθησαν τα συμπεράσματα της μελέτης.
description: The aim of this thesis is to examine the possible influence of Greek crisis to German interest rates.It is applied the methodology of ARIMA model with exogenous variable. The main goal of this methodology is to create an autoregressive model which then , with the help of some econometric tests, verify or reject our initial assumption. For this purpose used daily data of the German ten-year bonds. Specifically, it was held a series of statistical tests to stagnation and the regularity of the time series and then estimated the model on which exported the study's conclusions.
Performance issues in content dissemination to metropolitan mobile users
Creators: name: Corrente, Giuseppe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2
subject: 68M12

description: In this paper we consider a set of heterogeneous terminals in a urban area that are interested in collecting the information originated from several sources. This set includes mobile nodes (pedestrian and vehicles) and fixed terminals. In particular, each terminal aims at retrieving the data items in a limited region of interest (ROI) centered around the node position. Since data items may change over time all nodes must strive for having access to the latest version. The goal of the paper is to evaluate the amount of information each node is able to gather (coverage) resorting to simple distributed data collection and sharing through local broadcast communications. We study the diffusion of information updates in the whole area, evaluate the impact of energy saving policies in the protocol version run by pedestrian devices, and the impact of contextual awareness about location and motion of nodes in the forwarding policies. The study we present in this paper has been carried out through simulation. To this end we develop a discrete event simulator working on top of mobility and radio propagation traces obtained from the UDelModels tools that allow to obtain realistic traces of mobility and radio propagation.
description: 41 pages, 11 figures
Multi-photon enhancement of the Schwinger pair production mechanism under strong FEL radiation
Creators: name: Mouloudakis, G.
name: Lambropoulos, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we study the production of electron-positron pairs from vacuum in presence of a field resulting from the collision of two counter-propagating FEL beams that undergo Gaussian amplitude fluctuations. Our work aims to the extension of previous works based on the standing wave hypothesis, by including the inherent stochastic amplitude fluctuations of the individual FEL beams. As shown, depending on the order of the process, a large non-linear enhancement in the number of created pairs can be expected over a big intensity window in the multi-photon regime. Vacuum pair creation in view of future plans on the production of ultra-strong and high energy radiation in FEL facilities is also discussed.
description: 10 pages, 2 figures
Random matrix analysis of complex networks
Creators: name: Jalan, Sarika
name: Bandyopadhyay, Jayendra N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study complex networks under random matrix theory (RMT) framework. Using nearest-neighbor and next-nearest-neighbor spacing distributions we analyze the eigenvalues of adjacency matrix of various model networks, namely, random, scale-free and small-world networks. These distributions follow Gaussian orthogonal ensemble statistic of RMT. To probe long-range correlations in the eigenvalues we study spectral rigidity via $Δ_3$ statistic of RMT as well. It follows RMT prediction of linear behavior in semi-logarithmic scale with slope being $\sim 1/π^2$. Random and scale-free networks follow RMT prediction for very large scale. Small-world network follows it for sufficiently large scale, but much less than the random and scale-free networks.
description: accepted in Phys. Rev. E (replaced with the final version)
International Education: Career Pathways in Foreign Universities
Creators: name: Garg, Rishabh
Publisher: name: Zenodo
Year: 2023

description: Are you dreaming of a science or engineering career abroad? Make it happen by following a smart game plan! Start by aligning your passion—whether it's biotech, physics, or computer science—with the right university. Look for institutions with top-notch reputations and research facilities. Master the entry requirements early, like GRE or language tests, and explore scholarships to fund your education. Plan for the future by researching career prospects and job opportunities post-graduation. With the right strategy, you’ll be on the path to success at a leading global university!
Η παρουσία των Μη Κυβερνητικών Οργανώσεων στον ελλαδικό χώρο και ο ρόλος τους στη προώθηση της ενεργούς συμμετοχής των νέων στη ζωή της Ευρωπαϊκής κοινότητας.:
Creators: name: Τσάμη, Κωνσταντία Δημοσθένη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Μη Κυβερνητικές Οργανώσεις
Κινητικότητα νέων
Νέοι
Non Government Organization
Youth mobility
Youth

description: Σύμφωνα με την Ευρωπαϊκή Επιτροπή οι Μη Κυβερνητικές Οργανώσεις αποτελούν την πιο δυναμική έκφραση της Κοινωνίας των Πολιτών και αποτελούν τμήμα της καθημερινότητας μας εδώ και πολλά χρόνια. Αποτελούν ζωντανό κομμάτι της και βρίσκονται πάντα σε διαδικασία εξέλιξης και δημιουργίας. Τα τελευταία χρόνια η Ευρωπαϊκή Ένωση προκειμένου να αντιμετωπίσει την ολοένα αυξανόμενη κρίση, την ανεργία των νέων και το γεγονός ότι ένα μεγάλο ποσοστό των νέων εγκαταλείπει το σχολείο, καταβάλλει προσπάθεια να ενθαρρύνει τους νέους να συμμετέχουν ενεργά στην αγορά εργασίας αλλά και στην κοινωνία γενικότερα. Η Ευρωπαϊκή Ένωση έχει επενδύσει πολύ χρόνο και πολλά χρήματα σε δραστηριότητες διακρατικής κινητικότητας στο τομέα της εκπαίδευσης, της κατάρτισης και της νεολαίας, μέσα από τα προγράμματα Erasmus και την οργάνωση δραστηριοτήτων που χρησιμοποιούν μεθόδους μη τυπικής μάθησης. Οι Μη Κυβερνητικές Οργανώσεις έχουν ενεργό ρόλο στη πρωτοβουλία αυτή μιας και έχουν αναλάβει τη δημιουργία και την οργάνωση των προγραμμάτων της νεανικής κινητικότητας. Οι στόχοι που θέτει η Ευρωπαϊκή Ένωση είναι φιλόδοξοι, οι Μη Κυβερνητικές Οργανώσεις υλοποιούν τα προγράμματα αυτά, αλλά τον τελευταίο λόγο τον έχουν οι νέοι .Σκοπός της παρούσας έρευνας είναι να αποτυπώσει την γνώμη των νέων ανθρώπων που συμμετείχαν στα προγράμματα αυτά, στο εάν και κατά πόσο η συμμετοχής τους επηρέασε την μετέπειτα ζωή τους.
description: According to the European Commission, NGOs are the most powerful expression of civil society and significant part of youth everyday life. In recent years European Union is encouraging young people to be active participants in labor market and in the society in general. NGOs have an active role in this process since youth mobility programs have been undertaken. EU has invested money and time to organize those activities and through the Erasmus+ programs promote non formal education. The aims that have been set by European Union are ambitious and the NGOs are implementing those programs. Despite that young people have to say their own opinion and the goal of this research is to reflect the opinion of young people who have participated in these programs, whether their participation in these programs have made affect in their lives
Ο αρχαίος ελληνικός μύθος στην ποίηση του Παπαδίτσα:
Creators: name: Γιαννοπούλου, Αικατερίνη Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Δ. Π. Παπαδίτσας
αρχαίος ελληνικός μύθος
διακειμενικότητα
D. P. Papaditsas
ancient Greek myth
intertextuality

description: Σκοπός της διπλωματικής εργασίας ήταν η ανίχνευση και ο εντοπισμός των διακειμενικών σχέσεων της ποίησης του Παπαδίτσα με την ελληνική αρχαιότητα, με βάση κυρίως την ειδική σχέση του ποιητή με τον αρχαίο ελληνικό μύθο και τον τρόπο με τον οποίο αυτός συγκροτείται μέσα από την υπερρεαλιστική γραφή. Η εργασία ξεκινάει με μια σύντομη επισκόπηση των απόψεων της κριτικής για το ρόλο του μύθου στην ποίηση του Παπαδίτσα καθώς και των θεωρητικών προσεγγίσεων που έχουν αναπτυχθεί γύρω από το θέμα του μύθου στην λογοτεχνία. Στη συνέχεια επιχειρείται ο ερμηνευτικός σχολιασμός των μυθικών μορφών που εμφανίζονται με μεγαλύτερη συχνότητα στην ποίηση του Παπαδίτσα. Ακόμη εξετάζεται ο τρόπος με τον οποίο ο ποιητής χειρίζεται επεισόδια και μορφές που προέρχονται από δύο μυθικούς κύκλους της αρχαιότητας, τον τρωικό και τον αργοναυτικό. Η εργασία ολοκληρώνεται με το επίμετρο που περιλαμβάνει τα ονόματα των μυθικών μορφών και τόπων που εμφανίζονται στους στίχους των ποιημάτων του Παπαδίτσα.
description: The aim of the present thesis was the identification of intertextual relations between Papaditsa’s poetry and Greek antiquity based on the special relation of the poet with ancient greek myth and the way it is established through surrealist writing. The thesis starts with a brief review of critics aspects on the role of the myth in Papaditsa’s poetry, as well as, on the theoretical approaches developed on the subject of myth in literature.Then, interpretative commentary of mythical figures most presented in Papaditsa’s poetry is attempted. Furthermore, the way the poet handles scenes and figures coming from two mythical circles is examined; trojan and argonautical. Finally, the thesis ends with addendum which includes the names of the mythical figures and places appearing on Papaditsa’s poetry.
AsteroFLAG: first results from hare-and-hounds Exercise 1
Creators: name: Chaplin, W. J.
name: Appourchaux, T.
name: Arentoft, T.
name: Ballot, J.
name: Christensen-Dalsgaard, J.
name: Creevey, O. L.
name: Elsworth, Y.
name: Fletcher, S. T.
name: Garcia, R. A.
name: Houdek, G.
name: Jimenez-Reyes, S. J.
name: Kjeldsen, H.
name: New, R.
name: Regulo, C.
name: Salabert, D.
name: Sekii, T.
name: Sousa, S. G.
name: Toutain, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on initial results from the first phase of Exercise 1 of the asteroFLAG hare and hounds. The asteroFLAG group is helping to prepare for the asteroseismology component of NASA's Kepler mission, and the first phase of Exercise 1 is concerned with testing extraction of estimates of the large and small frequency spacings of the low-degree p modes from Kepler-like artificial data. These seismic frequency spacings will provide key input for complementing the exoplanet search data.
description: 11 pages, accepted for publication in Astronomische Nachrichten
A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures
Creators: name: Durif, Olivier
name: Capron, Michael
name: Messinger, Joey P.
name: Benidar, Abdessamad
name: Biennier, Ludovic
name: Bourgalais, Jérémy
name: Canosa, André
name: Courbe, Jonathan
name: Garcia, Gustavo A.
name: Gil, Jean-François
name: Nahon, Laurent
name: Okumura, Mitchio
name: Rutkowski, Lucile
name: Sims, Ian R.
name: Thiévin, Jonathan
name: Picard, Sébastien D. Le
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A new instrument dedicated to the kinetic study of low-temperature gas phase neutral-neutral reactions, including clustering processes, is presented. It combines a supersonic flow reactor with Vacuum Ultra-Violet (VUV) synchrotron photoionization time of flight mass spectrometry. A photoion-photoelectron coincidence detection scheme has been adopted to optimize the particle counting efficiency. The characteristics of the instrument are detailed along with its capabilities illustrated through a few results obtained at low temperatures (< 100 K) including a {photoionization spectrum} of n-butane, the detection of formic acid dimer formation as well as the observation of diacetylene molecules formed by the reaction between the C$_2$H radical and C$_2$H$_2$.