cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SSHOC D4.12 Guidelines for the integration of Audio Capture data in Survey Interviews
Creators: name: Emery, Tom
name: Luijkx, Ruud
name: Borghesan, Giovanni
name: Heuvel, Henk Van Den
Publisher: name: Zenodo
Year: 2019
Subjects: SSHOC
Social Sciences and Humanities Open Cloud
European Open Science Cloud
EOSC
Interoperability
metadata interoperability
data interoperability
FAIR principles
metadata standards

description: This deliverable is the first associated with Task 4.4. Voice recorded interviews and audio analysis in the Social Sciences and Humanities Open Cloud project (SSHOC). This task will collect audio data in the form of voice recorded interviews from the Generations and Gender Survey. This audio data will then be processed and analysed by colleagues at CLARIN to contribute with automatic speech recognition, speaker attribution, part-of-speech-tagging, named entity labelling and other NLP tools. Survey methodologists and Social Scientists from the EVS and GGP will work together with data scientists and oral historians from CLARIN to develop a survey module specifically adapted to integrate audio recordings and their processing into the traditional data collection process. Thematically they will focus on the qualitative assessment of value statements. Once fielded, CLARIN will adapt existing auto- transcription tools to the specific needs of the audio survey data and make the transcribed files available for analysis. Data Archiving and Networked Services (NL) (DANS-KNAW) will oversee archiving and dissemination of the data, drawing on their significant experience with oral histories. In these guidelines, we set out the questionnaire and fieldwork principles for the implementation of the Audio Survey Modules. These will then be implemented in fieldwork in early 2021 and the data processed and analysed before the end of 2021 (Month 36 of the project). A specific questionnaire and guidelines are required as the aim of the project is unprecedented in several respects: Audio data is sometimes captured by surveys as part of data quality control, but the technical implementation and questionnaire content are rarely if ever optimized to ensure that the digital language data generated from the interview is optimized for linguistic analysis. What is unique about this task is that researchers from CLARIN were involved from the early stages of design in order to ensure that the substantive focus and technical implementation of the project would be able to produce audio data and transcripts that produce meaningful results when analysed with the tools at CLARIN’s disposal. These guidelines proceed as follows. First, the various aims of the project are outlined from the perspective of survey infrastructures (GGP & EVS) and linguistic infrastructures (CLARIN). These, help shape the technical requirements that are then laid out in section 4. Finally, the questions which we intend to field are then laid out.
description: This deliverable has been accepted by the European Commission on - 03 November 2020
Radio detection of cosmic ray air showers with LOPES
Creators: name: Huege, Tim
name: Collaboration, the LOPES
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the last few years, radio detection of cosmic ray air showers has experienced a true renaissance, becoming manifest in a number of new experiments and simulation efforts. In particular, the LOPES project has successfully implemented modern interferometric methods to measure the radio emission from extensive air showers. LOPES has confirmed that the emission is coherent and of geomagnetic origin, as expected by the geosynchrotron mechanism, and has demonstrated that a large scale application of the radio technique has great potential to complement current measurements of ultra-high energy cosmic rays. We describe the current status, most recent results and open questions regarding radio detection of cosmic rays and give an overview of ongoing research and development for an application of the radio technique in the framework of the Pierre Auger Observatory.
description: 8 pages; Proceedings of the CRIS2006 conference, Catania, Italy; to be published in Nuclear Physics B, Proceedings Supplements
Probing the Faintest Stars in a Globular Star Cluster
Creators: name: Richer, Harvey B.
name: Anderson, Jay
name: Brewer, James
name: Davis, Saul
name: Fahlman, Gregory G.
name: Hansen, Brad M. S.
name: Hurley, Jarrod
name: Kalirai, Jasonjot S.
name: King, Ivan R.
name: Reitzel, David
name: Rich, R. Michael
name: Shara, Michael M.
name: Stetson, Peter B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: NGC 6397 is the second closest globular star cluster to the Sun. Using 5 days of time on the Hubble Space Telescope, we have constructed the deepest ever color-magnitude diagram for this cluster. We see a clear truncation in each of its two major stellar sequences. Faint red main sequence stars run out well above our observational limit and near to the theoretical prediction for the lowest mass stars capable of stable hydrogen-burning in their cores. We also see a truncation in the number counts of faint blue stars, namely white dwarfs. This reflects the limit to which the bulk of the white dwarfs can cool over the lifetime of the cluster. There is also a turn towards bluer colors in the least luminous of these objects. This was predicted for the very coolest white dwarfs with hydrogen-rich atmospheres as the formation of H2 causes their atmospheres to become largely opaque to infrared radiation due to collision-induced absorption.
description: 12 pages, 4 figures. Full Resolution Figures in Science, 2006, 313, 936
Χρηματοοικονομική ανάλυση του κλάδου τροφίμων για την περίοδο 2010-2014
Creators: name: Δερμεντζής, Αλέξανδρος Φωτίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Αριθμοδείκτες
Κλάδος τροφίμων
Χρηματοοικονομικές καταστάσεις
Financial ratios
Food sector
Financial statements

description: Το αντικείμενο της παρούσας διπλωματικής εργασίας αφορά στην περιγραφή της χρηματοοικονομικής λογιστικής σύμφωνα με τα ελληνικό λογιστικό σχέδιο καθώς και την ανάλυση των οικονομικών καταστάσεων δέκα ελληνικών επιχειρήσεων του κλάδου τροφίμων για την περίοδο 2010-2014 με την βοήθεια αριθμοδεικτών. Παραθέτει τα οφέλη που προκύπτουν μέσω της διεξοδικής αξιοποίησης των λογιστικών στοιχείων των οικονομικών μονάδων και θα μπορούσε να αποτελέσει πολύτιμο εργαλείο στην διοίκηση επιχειρήσεων. Επιπλέον η εφαρμογή των αριθμοδεικτών συμβάλλει στην εξαγωγή συμπερασμάτων σχετικά με την πορεία του κλάδου τροφίμων στην ελληνική οικονομία την περίοδο της οικονομικής κρίσης.
description: The scope of this thesis is the description of the financial accounting in accordance with Greek gaap, and the analysis of the financial statements of ten Greek companies, which belong in food sector, for the period 2010-2014 by using financial ratios. Furthermore, describes how useful the application of financial ratios could be in order to draw conclusions regarding the path of food sector in Greece due to the period of economic crisis. Finally, it lists the benefits through comprehensive utilization of accounting data of financial statements and it could be a valuable asset in business management.
The overview of the spin physics at RHIC-PHENIX experiment
Creators: name: Fukao, Yoshinori
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In Spiring 2005, RHIC successfully completed its first long data collection run with polarized proton beams. PHENIX accumulated ten fold larger statistics with higher polarization than the previous spin physics run in 2003. This contribution will introduce the RHIC-PHENIX experiment and present our recent results.
description: To appear in the proceedings of Particles and Nuclei International Conference (PANIC 05), Santa Fe, New Mexico, 24-28 Oct 2005
Modeling of Interstellar Scintillation Arcs from Pulsar B1133+16
Creators: name: Trang, Frank S.
name: Rickett, Barney J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The parabolic arc phenomenon visible in the Fourier analysis of the scintillation spectra of pulsars provides a new method of investigating the small scale structure in the ionized interstellar medium (ISM). We report archival observations of the pulsar B1133+16 showing both forward and reverse parabolic arcs sampled over 14 months. These features can be understood as the mutual interference between an assembly of discrete features in the scattered brightness distribution. By model-fitting to the observed arcs at one epoch we obtain a ``snap-shot'' estimate of the scattered brightness, which we show to be highly anisotropic (axial ratio >10:1), to be centered significantly off axis and to have a small number of discrete maxima, which are coarser the speckle expected from a Kolmogorov spectrum of interstellar plasma density. The results suggest the effects of highly localized discrete scattering regions which subtend 0.1-1 mas, but can scatter (or refract) the radiation by angles that are five or more times larger.
description: 14 pages, 4 figures, submitted to Astrophysical Journal
Infinitesimal Darboux transformations of the spectral curves of tori in the four-space
Creators: name: Grinevich, P. G.
name: Taimanov, I. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study the action of conformal transformations of the ambient space on the Dirac operator coming into the Weierstrass (or spinor) representation of a torus in the Euclidean four-space. It is showed that such an action generates a flow acting on the potential of the operator, that this flow is described by a nonlinear system of the Melnikov type and that it preserves the Floquet multipliers of the Dirac operator with double-periodic potential. However this flow is only almost isospectral since it does not preserve the spectral curve in general and its action may result in adding or removing multiple points corresponding to the same multipliers. We demonstrate that in some important geometrical examples after reparameterization of the temporary variable such flows are governed by integrable systems on whiskered tori.
description: 18 pages
Untersuchungen und Charakterisierung der Stoffwechselsituation von Milchkühen in der peripartalen Phase mithilfe der indirekten Kalorimetrie und der Herzfrequenzvariabilität
Creators: name: Erdmann, Sandra
Publisher: name: Universität Rostock
Year: 2018
Subjects: subject: 590 Zoological sciences
subject: 630 Agriculture

description: In dieser Arbeit konnte die erhebliche Stoffwechselbelastung von Milchkühen vor allem in der Frühlaktation bestätigt werden. Zudem zeigte sich, dass die auftretende negative Energiebilanz weit stärker ausgeprägt ist, als bisher durch die Schätzgleichungen angenommen. Allerdings können einige Kühe mit dieser Stoffwechselbelastung besser umgehen und weisen unterschiedliche Anpassungsreaktionen auf. Mithilfe der HRV konnten unterschiedliche Reaktionsgruppen detektiert und ein geeigneter Parameter zur Vorhersage verminderter Anpassungsfähigkeit bei metabolischen Belastungen identifiziert werden.
Fixing Errors of the Google Voice Recognizer through Phonetic Distance Metrics
Creators: name: Campos-Sobrino, Diego
name: Campos-Soberanis, Mario
name: Martínez-Chin, Iván
name: Uc-Cetina, Víctor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Speech recognition systems for the Spanish language, such as Google's, produce errors quite frequently when used in applications of a specific domain. These errors mostly occur when recognizing words new to the recognizer's language model or ad hoc to the domain. This article presents an algorithm that uses Levenshtein distance on phonemes to reduce the speech recognizer's errors. The preliminary results show that it is possible to correct the recognizer's errors significantly by using this metric and using a dictionary of specific phrases from the domain of the application. Despite being designed for particular domains, the algorithm proposed here is of general application. The phrases that must be recognized can be explicitly defined for each application, without the algorithm having to be modified. It is enough to indicate to the algorithm the set of sentences on which it must work. The algorithm's complexity is $O(tn)$, where $t$ is the number of words in the transcript to be corrected, and $n$ is the number of phrases specific to the domain.
description: 13 pages, 4 figures. This article is a translation of the paper "Correcci\'on de errores del reconocedor de voz de Google usando m\'etricas de distancia fon\'etica" presented in COMIA 2018
SSHOC D4.14 Policy API Tool
Creators: name: Emery, Tom
Publisher: name: Zenodo
Year: 2020
Subjects: SSHOC
Social Sciences and Humanities Open Cloud
European Open Science Cloud
EOSC
Interoperability
metadata interoperability
data interoperability
FAIR principles
metadata standards
EOSC-hub
Social policy APIs
APIs for social surveys

description: This document sets out the rationale, design and guidelines for use of the Organization for Economic Cooperation and Development’s (OECD) Family Policy Calculator Application Programming Interface (API). The API was developed and deployed as part of Task 4.5 in the Social Science and Humanities Open Cloud. The task looks to bring existing, widely used data sources into the European Open Science Cloud, increase their interoperability and integrate them within the data processing of existing Social Science Research Infrastructures. The Organization for Economic Development and Cooperations Family Policy Calculator was converted into an API and published through Plumber (a program in R) and DigitalOcean (a cloud service). This API can be queried for family policy outcomes in 35 OECD member states and provides detailed outputs regarding individuals tax position depending on their household status, income, number of children and age of the youngest child. Some examples of applications are provided, and next steps are laid out in the final section.
description: This deliverable has been accepted by the European Commission on - 03 November 2020
description: {"references": ["Social Policy Indicators website: https://www.spin.su.se/; 24 Feb 2020", "Euromod (Tax-benefit microsimulation model for the European Union) website: https://www.euromod.ac.uk/; 24 Feb 2020", "The ILO Social Security Database Programs website: http://www.ilo.org/sesame/ifpses.socialdatabase; 24 Feb 2020"]}
Universality of entropy principle for a general diffeomorphism-covariant purely gravitational theory
Creators: name: Jiang, Jie
name: Fang, Xiongjun
name: Gao, Sijie
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Thermodynamics plays an important role in gravitational theories. It is a principle independent of the gravitational dynamics, and there is still no rigorous proof to show that it is consistent with the dynamical principle. We consider a self-gravitating perfect fluid system in a general diffeomorphism-covariant purely gravitational theory. Based on the Noether charge method proposed by Iyer and Wald, considering static off/on-shell variational configurations which satisfy the gravitational constraint equation, we rigorously prove that the extrema of the total entropy of perfect fluid inside a compact region for fixed total particle number demands that the static configuration is an on-shell solution after we introduce some appropriate boundary conditions, i.e., it also satisfies the spatial gravitational equations. This means that the entropy principle of the fluid stores the same information as the gravitational equation in a static configuration. Our proof is universal and holds for any diffeomorphism-covariant purely gravitational theories, such as Einstein gravity, f(R) gravity, Lovelock gravity, f(Gauss-Bonnet) gravity and Einstein-Weyl gravity. Our result shows the consistency between the ordinary thermodynamics and the gravitational dynamics.
description: 6 pages, Accepted by CPC
On the quartic curvature gravity in the context of FRW cosmology
Creators: name: Iihoshi, M.
name: Ketov, S. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the purely gravitational fourth-order (in the spacetime curvature) quantum corrections to the Einstein-Hilbert gravity action, coming from superstrings in the leading order with respect to the Regge slope parameter, and study their impact on the evolution of the Hubble scale in the context of the FRW cosmology, in four spacetime dimensions. We propose the generalized Friedmann equations, and rule out the most naive (Bel-Robinson tensor squared) gravity. Our new cosmological equations have exact inflationary solutions without a spacetime singularity.
description: 8 pages, LaTeX, contribution to the Proceedings of Osaka Workshop `Progress of String Theory and Quantum Field Theory', December 7-10, 2007, at Osaka City University, Japan
Guatemala: Its Agricultural Production and Trade
Creators: name: Coyner, Mary S
name: Coyner, Mary S
Publisher: name: Unknown
Year: 1961
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Effective April 3, 1961, the responsibility for the work in the Regional Analysis Division was transferred from the Foreign Agricultural Service to the Economic Research Service. This report, originally issued as FAS-M-51, is now reissued, without change in text, by the new agency.
Code, performance and ideology : the dialogue of reception as dramatic praxis in Voltaire's tragedies
Creators: name: Leith, Hope Mary
Publisher: name: University of British Columbia
Year: 2008

description: This dissertation undertakes to examine the dramatic prixis and the ideological systems which shape Voltaire’s tragic oeuvre. This study takes the position that these texts are multi-voiced, open-ended and performance-directed. The analytical approach taken draws from semiotic, Marxist and feminist critical techniques. Thirteen plays were chosen for analysis: "Artémire" (1720), "Hérode et Mariamne" (1724, 1725, 1763), "Eriphile" (1732), "Zaïre" (1732), "Adélaïde du Guesclin" (1734, 1751, 1765), "Zulime" (1740, 1762), "Mahomet" (1741), "Sémiramis" (1748), "Oreste" (1750), "Rome sauvée" (1752), "Olympie" (1760), "Le Triumvirat" (1764) and "Les Guèbres" (1769). Chapter I undertakes the analysis of the textual codes, largely concentrating on the language which resulted from or which perisisted despite external reaction to the text, in order to reconstruct the rules by which language operated in the tragic form. Tragedy's requirement of "noble" language and action restrict it to those who had the classical education necessary to understand and manipulate its rules, thereby establishing a gender and class privilege within the text. Chapter II begins with the premise that performance is not external or incidental but integral to the texts under examination. It details the impact which performance and performers had on the text and on public response to that text. It also brings to light Voltaire's profound ambivalence towards this influence on "his" texts. The desire to control performance led Voltaire to become a "director" of his plays in the modern sense, as he sought to impose his ideas of decor, costume, staging and declamation. Chapter III defines ideology as the system or systems of belief which underlie and inform the texts. The analysis is organized around three broad areas of social organization: government, religion and the family. Special attention is paid to the status and treatment of women within these areas. The chapter examines whether the systems revealed are static or dynamic over time, personal to Voltaire or drawn from a wider social group, radical or conservative in content. The Appendix to this study furnishes a chronological table of textual transformations for each play studied, giving the source, location, date, extent, speaker, content and function of changes.
Ultrafine particles in the lower troposphere: major sources, invisible plumes and meteorological transport processes
Creators: name: Junkermann, Wolfgang
name: Hacker, Jorg
Publisher: name: Karlsruhe
Year: 2019

description: Ultrafine particles in the atmosphere are key factors for aerosol cloud interaction as they affect cloud droplet size distributions, latent heat transport into elevated layers via droplet evaporation and precipitation properties via delayed raindrop generation and possibly invigoration of torrential rains. They are spatially and temporarily highly uneven distributed, suggesting the presence of strong sources either for primary particle emissions or for particle precursor materials. Airborne investigations now allowed to identify major anthropogenic primary particle sources, their strength and contribution to the ultrafine particle budget. Current industrial flue gas cleaning technologies favor the production of nucleation mode aerosol by gas to particle conversion which is emitted into mid elevations of the planetary boundary layer, transported over hundreds of km and vertically mixed by thermal convection on different time scales. These sources also emit a suitable mixture of sulphur and nitrogen compounds and ammonia, key components for aerosol nucleation from gas to particle conversion. Meteorological transport and the results of three dimensional in situ measurements explain both the spatial and temporal patterns of number and size distributions of ultrafine nucleation mode particles observed. Budget studies allow a comparison with recent emission szenarios. Results from clean and polluted environments and the potential impact of these ultrafine particles on the hydrological cycle will be discussed.
Supersonic turbulence, filamentary accretion,and the rapid assembly of massive stars and disks
Creators: name: Banerjee, Robi
name: Pudritz, Ralph E.
name: Anderson, Dave W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a detailed computational study of the assembly of protostellar disks and massive stars in molecular clouds with supersonic turbulence. We follow the evolution of large scale filamentary structures in a cluster-forming clump down to protostellar length scales by means of very highly resolved, 3D adaptive mesh refined (AMR) simulations, and show how accretion disks and massive stars form in such environments. We find that an initially elongated cloud core which has a slight spin from oblique shocks collapses first to a filament and later develops a turbulent disk close to the center of the filament. The continued large scale flow that shocks with the filament maintains the high density and pressure within it. Material within the cooling filament undergoes gravitational collapse and an outside-in assembly of a massive protostar. Our simulations show that very high mass accretion rates of up to 10^-2 Msol/yr and high, supersonic, infall velocities result from such filamentary accretion. Accretion at these rates is higher by an order of magnitude than those found in semi-analytic studies, and can quench the radiation field of a growing massive young star.Our simulations include a comprehensive set of the important chemical and radiative processes such as cooling by molecular line emission, gas-dust interaction, and radiative diffusion in the optical thick regime, as well as H2 formation and dissociation. Therefore, we are able to probe, for the first time, the relevant physical phenomena on all scales from those characterizing the clump down to protostellar core.
description: 35 pages, 17 figures, mnras style, accepted by MNRAS, a high resolution version can be found at http://www.ita.uni-heidelberg.de/~banerjee/TurbulentSF.pdf or http://www.physics.mcmaster.ca/~banerjee/TurbulentSF.pdf
Percolation thresholds on high dimensional $D_n$ and dense packing lattices
Creators: name: Hu, Yi
name: Charbonneau, Patrick
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The site and bond percolation problems are conventionally studied on (hyper)cubic lattices, which afford straightforward numerical treatments. The recent implementation of efficient simulation algorithms for high-dimensional systems now also facilitates the study of $D_n$ root lattices in $n$ dimension as well as $E_8$-related dense packing lattices. Here, we consider the percolation problem on $D_n$ for $n=3$ to $13$ and on $E_8$ relatives for $n=6$ to 9. Precise estimates for both site and bond percolation thresholds obtained from invasion percolation simulations are compared with dimensional series expansion on $D_n$ lattices based on lattice animal enumeration. As expected, the bond percolation threshold rapidly approaches the Bethe lattice limit as $n$ increases for these high-connectivity lattices. Corrections, however, exhibit clear yet unexplained trends. Interestingly, the finite-size scaling exponent for invasion percolation is found to be lattice and percolation-type specific.
description: 7 pages, 3 figures
The kinetic luminosity function and the jet production efficiency of growing black holes
Creators: name: Heinz, Sebastian
name: Merloni, Andrea
name: Schwab, Josiah
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive the kinetic luminosity function for flat spectrum radio jets, using the empirical and theoretical scaling relation between jet power and radio core luminosity. The normalization for this relation is derived from a sample of flat spectrum cores in galaxy clusters with jet-driven X-ray cavities. The total integrated jet power at z=0 is W_{tot} ~ 3x10^40 ergs/s/Mpc^{3}. By integrating W_{tot} over red-shift, we determine the total energy density deposited by jets as e_{tot} ~ 2x10^{58} ergs/Mpc^{3}. Both W_{tot} and e_{tot} are dominated by low luminosity sources. Comparing e_{tot} to the local black hole mass density rho_{BH} gives an average jet production efficiency of epsilon_{jet} = e_{jet}/rho_{BH}c^2 ~ 3%. Since black hole mass is accreted mainly during high luminosity states, epsilon_{jet} is likely much higher during low luminosity states.
description: 4 pages, 2 figures, accepted for publication in ApJ Letters
A Study on Mitigation of Interstory Drift Concentrations in Reinforced Concrete Frames under Earthquake Demands
Creators: name: Sönmez, Egemen
name: Dönmez, Cemalettin
Publisher: name: figshare
Year: 2021
Subjects: subject: 90504 Earthquake Engineering
subject: FOS: Civil engineering
subject: 90506 Structural Engineering
subject: 90599 Civil Engineering not elsewhere classified

description: Site observations and analytical studies show that low-rise RC frames have larger interstory drift ratios at the lower stories under earthquake loading. It is obvious that due to the localization of drifts, these structures could reach their capacity limits earlier than a system with a well-distributed drift among its stories. This phenomenon is especially vital for frames with limited drift capacity and could cause them to fail below the specified design demands. The existing stock of seismically deficient RC frames in Turkey, and for that matter all over the world, are in this group. The presented study investigates the effects of a pre-organized stiffness distribution along the building height to mitigate the interstory drift concentrations. As a case study, the readily available infill walls were used for stiffness-modifying elements to obtain the organized stiffness distribution. Initially, the numerical model was calibrated and verified using the experimental results. Afterward, three planar frames were studied. These were a bare frame and two frames with infill walls. Nonlinear dynamic time-history and pushover analyses were performed to evaluate the seismic performance of the frames. The results indicate that the organized stiffness distribution could mitigate the interstory drift concentrations and provide a better distribution of interstory drift ratios along the height of the frames.
Markov ρυθμιζόμενες στοχαστικές διαδικασίες σε συμβάσεις ανταλλαγής κινδύνου (CDS)
Creators: name: Δεληγιάννης, Μιχάλης Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Γεννήτορες
Πιστωτικός κίνδυνος
Συμβάσεις ανταλλαγής κινδύνου
Generators
Credit risk
Credit Default Swap

description: Στην παρούσα διπλωματική εργασία παραθέτουμε τον γεννήτορα μιας ρυθμιζόμενης Μαρκοβιανής αλυσίδας ρυθμιζόμενη από μία Ito διαδικασία (και αντιστρόφως), και στη συνέχεια περιγράφουμε και υπολογίζουμε την τιμή ενός Credit Default Swap. Αρχικά ο υπολογισμός γίνεται με τη χρήση μιας ομογενούς Μαρκοβιανής αλυσίδας, όπως επίσης και με τις ρυθμιζόμενες Μαρκοβιανές διαδικασίες. Τέλος, τιμολογούμε ένα CDS κάτω από ένα ουδέτερο ως προς τον κίνδυνο μέτρο πιθανότητας, διατηρώντας την Μαρκοβιανή του ιδιότητα.
description: In the current thesis, we describe the generator of a Markov chain modulated by an Itô process (and vice-versa). Afterwards, we describe and compute the value of a Credit Default Swap (CDS). Initially, the computation is performed with the use of a homogeneous Markov chain, as well as with the use of Markov modulated processes. Finally, we calculate the value of a CDS that is neutral in terms of probability measure risk, preserving its Markov property.
High-speed soliton ejection generated from the scattering of bright solitons by modulated reflectionless potential wells
Creators: name: Uthayakumar, T.
name: Sakkaf, L. Al
name: Khawaja, U. Al
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: 35Q55, 35Q51, 45G15, 49Sxx, 81V80, 65Z05

description: We investigate numerically and theoretically the conditions leading to soliton ejection stimulated through the scattering of bright solitons by modulated reflectionless potential wells. Such potential wells allow for the possibility of controlled ejection of solitons with significantly high speeds. At the outset, we describe the scattering setup and characterise the soliton ejection in terms of the different parameters of the system. Then, we formulate a theoretical model revealing the underlying physics of soliton ejection. The model is based on energy and norm exchange between the incident soliton and a stable trapped mode corresponding to an exact solution of the governing nonlinear Schrodinger equation. Remarkably, stationary solitons can lead to high-speed soliton ejection where part of the nonlinear interaction energy transforms to translational kinetic energy of the ejected soliton. Our investigation shows that soliton ejection always occurs whenever the incident soliton norm is greater than that of the trapped mode while their energy is almost the same. Once the incident soliton is trapped, the excess in norm turns to an ejected soliton in addition to a small amount of radiation that share translational kinetic energy. We found that higher ejection speeds are obtained with multi-node trapped modes that have larger binding energy. Simultaneous two-soliton ejection has been also induced by two solitons scattering with the potential from both of its sides. An ejection speed almost twice as that of single soliton ejection was obtained. Ejection outcome and ejection speed turn out to be sensitive to the relative phase between the two incoming solitons, which suggests a tool for soliton phase interferometry.
description: 14 pages, 14 figures
To άρθρο 13 παρ.1 του Κανονισμού 604/2013 (Δουβλινο ΙΙΙ) και η προστασία των θεμελιωδών δικαιωμάτων μέσα στο Κοινό Ευρωπαϊκό Σύστημα Ασύλου
Creators: name: Τσελεπή, Ευδοξία Πασχάλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Kανονισμός 604/2013
Θεμελιώδη Δικαιώματα
Κοινό Ευρωπαϊκό Σύστημα Ασύλου
Εuropean Regulation 604/2013
Fundamental Rights
Common European Asylum System

description: O σκοπός της παρούσας διπλωματικής εργασίας είναι η παρουσίαση της δυσλειτουργικής εφαρμογής του κριτηρίου του άρθρου 13 παρ.1 του Κανονισμού 604/2013 (Δουβλίνο ΙΙΙ) μέσα στο Κοινό Ευρωπαϊκό Σύστημα Ασύλου. Συγκεκριμένα, η επιβολή μίας μη ίσης κατανομής ευθύνης αλλά ενός δυσάναλογου βάρους που επιβάλει η εφαρμογή του κριτηρίου αυτού στα κράτη-μέλη των περιφερειακών συνόρων της Ένωσης, τα οποία αναγκάζονται να εξετάσουν την αίτηση ασύλου των αιτούντων διεθνή προστασία, όταν αυτοί έχουν περάσει παράνομα από τα σύνορα τους ως χωρών πρώτης παράνομης εισόδου.Στη συνέχεια, η εργασία αυτή ασχολείται με την προστασία των θεμελιωδών δικαιωμάτων των προσφύγων στο έδαφος των κρατών-μελών της Ένωσης και τις συνθήκες υποδοχής και φιλοξενίας τους κατά την παραμονή σε αυτό.Τέλος, στο τελευταίο κομμάτι της εργασίας παρουσιάζονται προτάσεις για τη βελτίωση του παρόντος συστήματος και αναλύονται τα συμπεράσματα της, που προκύπτουν από τη μελέτη της θεματικής της εργασίας.
description: The purpose of this thesis is the presentation of the dysfunctional application of the criterion that sets the article 13 paragraph 1 of the European Regulation 604/2013 (Dublin III) within the Common European Asylum System. Specifically, the imposition of a non-equal responsibility allocation but a disproportionate burden-shifting imposed by the application of this criterion in the member states of the Union's external boundaries, which are forced to consider the application for asylum applicants who preserve the right of international protection when they have illegally passed by their borders as first illegal entry countries in the European Union.Then, the thesis deals with the protection of fundamental rights of refugees in the territory of the EU Member States and their conditions of reception and hospitality during their stay in it.Finally, the last piece of thesis presents the proposals for improving the current system and the conclusions that resulted from the study of the work theme.
Modeling the selective partitioning of cations into negatively charged nanopores in water
Creators: name: Yang, Lu
name: Garde, Shekhar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Partitioning and transport of water and small solutes into and through nanopores is important to a variety of chemical and biological processes and applications. Here we study the partitioning of positive ions of increasing size into the pore interior using extensive molecular dynamics simulations. Despite the simplicity of the simulation system, the results provide new and useful insights on both the pore hydration and ion partitioning. For low negative charge densities on the pore, the driving force for partitioning of positive ions into the pore is weak, and no partitioning is observed. Increasing the pore charge gradually leads to partitioning of positive ions into the pore. Interestingly, over a range of intermediate negative charge densities, nanopores display both thermodynamic as well as kinetic selectivity toward partitioning of the larger K+ and Cs+ ions into their interior over the smaller Na+ ions. The variation of thermodynamic driving force and the average partitioning time with the pore charge density together suggest the presence of free energy barriers in the partitioning process. We discuss the role of ion hydration in the bulk and in the pore interior as well as of the pore hydration in determining the barrier heights for ion partitioning and the observed thermodynamic and kinetic selectivity.
description: 5 figures
Old open clusters as key tracers of Galactic chemical evolution. I. Fe abundances in NGC 2660, NGC 3960, and Berkeley 32
Creators: name: Sestito, P.
name: Bragaglia, A.
name: Randich, S.
name: Carretta, E.
name: Prisinzano, L.
name: Tosi, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We obtained high-resolution UVES/FLAMES observations of a sample of nine old open clusters spanning a wide range of ages and Galactocentric radii. The goal of the project is to investigate the radial metallicity gradient in the disk, as well as the abundance of key elements (alpha and Fe-peak elements). In this paper we present the results for the metallicity of three clusters: NGC 2660 (age ~1 Gyr, Galactocentric distance of 8.68 kpc), NGC 3960 (~ 1 Gyr, 7.80 kpc), and Be 32 (~6-7 Gyr, 11.30 kpc). For Be 32 and NGC 2660, our study provides the first metallicity determination based on high-resolution spectra. We performed equivalent width analysis with the spectral code MOOG, which allows us to define a metallicity scale and build a homogeneous sample. We find that NGC 3960 and NGC 2660 have a metallicity that is very close to solar ([Fe/H]=+0.02 and +0.04, respectively), while the older Be 32 turns out to have [Fe/H]=$-$0.29.
description: accepted by A&A, 17 pages, 8 ps figures
Fractal Dimensionof the El Salvador Earthquake (2001) time Series
Creators: name: Nurujjaman, Md.
name: Narayanan, Ramesh
name: Iyengar, A. N. Sekar
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We have estimated multifractal spectrum of the El Salvador earthquake signal recorded at different locations.
description: multifractal analysis
To Reuse or Not To Reuse? A Framework and System for Evaluating Summarized Knowledge
Creators: name: Liu, Michael Xieyang
name: Kittur, Aniket
name: Myers, Brad A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: As the amount of information online continues to grow, a correspondingly important opportunity is for individuals to reuse knowledge which has been summarized by others rather than starting from scratch. However, appropriate reuse requires judging the relevance, trustworthiness, and thoroughness of others' knowledge in relation to an individual's goals and context. In this work, we explore augmenting judgements of the appropriateness of reusing knowledge in the domain of programming, specifically of reusing artifacts that result from other developers' searching and decision making. Through an analysis of prior research on sensemaking and trust, along with new interviews with developers, we synthesized a framework for reuse judgements. The interviews also validated that developers express a desire for help with judging whether to reuse an existing decision. From this framework, we developed a set of techniques for capturing the initial decision maker's behavior and visualizing signals calculated based on the behavior, to facilitate subsequent consumers' reuse decisions, instantiated in a prototype system called Strata. Results of a user study suggest that the system significantly improves the accuracy, depth, and speed of reusing decisions. These results have implications for systems involving user-generated content in which other users need to evaluate the relevance and trustworthiness of that content.
Description of postcranial material of Marmoretta from Evidence for clinging arboreality in a Middle Jurassic stem lepidosaur
Creators: name: Ford, David Paul
name: Benson, Roger
name: Griffiths, Elizabeth
name: Evans, Susan
Publisher: name: The Royal Society
Year: 2025
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Final_S1_Description .docx
Nuclear Astrophysics with Gamma-ray-ray Line Observations
Creators: name: Diehl, Roland
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Gamma-ray spectrometers with high spectral resolution have been operated in space since 2002. Major efforts to understand instrumental response and backgrounds are a requird before detailed science interpretations can be derived; by now, high-resolution line-shape studies have resulted in significant astrophysical constraints, not only through studies of solar-flare details, but also for nuclear processes in the Galaxy: 44Ti from the Cas A supernova could only be detected in the low-energy lines at 68 and 78 keV, the 1157 keV line from the same decay is not seen; this constrains 44Ti ejection in core collapse supernovae. Diffuse nucleosynthesis is studied through 26Al, 60Fe, and positron annihilation gamma-ray measurements. The gamma-ray line from decay of radioactive 26Al could be measured at unpredecented spectroscopic precision. The new determination of the total mass of 26Al produced by stellar sources throughout the Galaxy yields 2.8 +/-0.9 M_solar, and the interstellar medium around 26Al sources appears characterized by velocities in the ~100 km s-1 region. 60Fe is clearly detected with SPI, its intensity ratio to 26Al of \~15% is on the lower side of predictions from massive-star and supernova nucleosynthesis models. Nucleosynthesis sources are probably minor contributors to Galactic positrons; this may be deduced from the bulge-centered spatial distribution of the annihilation gamma-ray emission, considering that nucleosynthesis sources are expected to populate mainly the disk part of the Galaxy. It is evident that new views at nuclear and astrophysical processes in and around cosmic sources are being provided through these space missions.
description: Invited talk at "Nuclei in the Cosmos IX", Geneva, June 2006
The interstellar medium in young supernova remnants: key to the production of cosmic X-rays and $γ$-rays
Creators: name: Sano, Hidetoshi
name: Fukui, Yasuo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We review recent progress in elucidating the relationship between high-energy radiation and the interstellar medium (ISM) in young supernova remnants (SNRs) with ages of $\sim$2000 yr, focusing in particular on RX J1713.7$-$3946 and RCW 86. Both SNRs emit strong nonthermal X-rays and TeV $γ$-rays, and they contain clumpy distributions of interstellar gas that includes both atomic and molecular hydrogen. We find that shock-cloud interactions provide a viable explanation for the spatial correlation between the X-rays and ISM. In these interactions, the supernova shocks hit the typically pc-scale dense cores, generating a highly turbulent velocity field that amplifies the magnetic field up to 0.1-1 mG. This amplification leads to enhanced nonthermal synchrotron emission around the clumps, whereas the cosmic-ray electrons do not penetrate the clumps. Accordingly, the nonthermal X-rays exhibit a spatial distribution similar to that of the ISM on the pc scale, while they are anticorrelated at sub-pc scales. These results predict that hadronic $γ$-rays can be emitted from the dense cores, resulting in a spatial correspondence between the $γ$-rays and the ISM. The current pc-scale resolution of $γ$-ray observations is too low to resolve this correspondence. Future $γ$-ray observations with the Cherenkov Telescope Array will be able to resolve the sub-pc-scale $γ$-ray distribution and provide clues to the origin of these cosmic $γ$-rays.
description: 18 pages, 15 figures, accepted for publication in Astrophysics and Space Science
Transmission Capacity of Ad Hoc Networks with Spatial Diversity
Creators: name: Hunter, Andrew M.
name: Andrews, Jeffrey G.
name: Weber, Steven
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper derives the outage probability and transmission capacity of ad hoc wireless networks with nodes employing multiple antenna diversity techniques, for a general class of signal distributions. This analysis allows system performance to be quantified for fading or non-fading environments. The transmission capacity is given for interference-limited uniformly random networks on the entire plane with path loss exponent $α>2$ in which nodes use: (1) static beamforming through $M$ sectorized antennas, for which the increase in transmission capacity is shown to be $Θ(M^2)$ if the antennas are without sidelobes, but less in the event of a nonzero sidelobe level; (2) dynamic eigen-beamforming (maximal ratio transmission/combining), in which the increase is shown to be $Θ(M^{\frac{2}α})$; (3) various transmit antenna selection and receive antenna selection combining schemes, which give appreciable but rapidly diminishing gains; and (4) orthogonal space-time block coding, for which there is only a small gain due to channel hardening, equivalent to Nakagami-$m$ fading for increasing $m$. It is concluded that in ad hoc networks, static and dynamic beamforming perform best, selection combining performs well but with rapidly diminishing returns with added antennas, and that space-time block coding offers only marginal gains.
description: 16 pages, 10 figures, to appear in IEEE Transactions on Wireless Communications
Η έκρηξη του ηφαιστείου της Θήρας (Σαντορίνης) και οι κοινωνίες του Αιγαίου στην Ύστερη Εποχή του Χαλκού
Creators: name: Κογκολίδης, Γιάννης Παύλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Ηφαίστειο
Σαντορίνη
Ύστερη Εποχή Χαλκού Ι σε Κρήτη και Αιγαίο
Volcano
Santorini
Late Bronze Age I Crete and Aegean

description: Η παρούσα εργασία διερευνά την έκρηξη του ηφαιστείου της Σαντορίνης στην Ύστερη Εποχή του Χαλκού και τις πιθανές επιπτώσεις της – με καθοιονδήποτε τρόπο – στις προϊστορικές κοινωνίες της ευρύτερης περιοχής του Αιγαίου. Πρώτα απ’ όλα, προσπαθούμε να οριοθετήσουμε την έκρηξη χρονολογικά, εστιάζοντας ταυτόχρονα στα ζητήματα της σχετικής και της απόλυτης χρονολόγησης. Έπειτα, κάνουμε μια αναδρομή στο ιστορικό της έρευνας γύρω από το ηφαίστειο και πραγματευόμαστε το φυσικό φαινόμενο της έκρηξης αυτό καθεαυτό. Στη συνέχεια, επιχειρούμε να εντοπίσουμε ίχνη της έκρηξης της ΥΕΧ στην ευρύτερη περιοχή του Αιγαίου (σε ξηρά και θάλασσα), είτε με τη μορφή του σχετικού ηφαιστειακού υλικού (τέφρα και ελαφρόπετρα), είτε του πιθανού τσουνάμι προερχόμενου από την ίδια έκρηξη. Τέλος, προσπαθούμε να σκιαγραφήσουμε τις πιθανές βραχυπρόθεσμες, αλλά και μέσο – μακροπρόθεσμες επιπτώσεις της ηφαιστειακής έκρηξης και των υποπροϊόντων της στους τοπικούς πληθυσμούς, εστιάζοντας στις δυνητικές ψυχολογικές και κοινωνικοπολιτικές / πολιτισμικές εξελίξεις που τα φαινόμενα αυτά θα ήταν ικανά να δρομολογήσουν.
description: This study aims to investigate the Thera eruption, which took place in the Late Bronze Age Greece, and the impact it could have had on the prehistoric societies of the Aegean world. Firstly, I try to estimate the date of the eruption focusing at the same time on the current issues in the chronological debate. Furthermore, I demonstrate the historical background of the archaeological research and discuss the natural phenomenon itself. Then, I attempt to trace the signs of the LBA eruption in the wider area of the Aegean (both at land and in the sea), either in the form of volcanic product (tephra and pumice) or in the form of a possible tsunami. In the end, I outline not only the short-term but also the long-term impact of the volcanic eruption and its byproducts on the regional populations, such as the possible sociopolitical and psychological/ideological developments in the prehistoric societies.