cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Linear Relations of High Energy Absorption/Emission Amplitudes of D-brane
Creators: name: Lee, Jen-Chi
name: Yang, Yi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the absorption amplitudes of a closed string state at arbitrary mass level leading to two open string states on the D-brane at high energies. As in the case of Domain-wall scattering we studied previously, this process contains only one kinematic variable. However, in contrast to the power-law behavior of Domain-wall scattering, its form factor behaves as exponential fall-off in the high energy limit. After identifying the geometric parameter of the kinematic, we derive the linear relations (of the kinematic variable) and ratios among the high energy amplitudes corresponding to absorption of different closed string states for each fixed mass level by D-brane. This result is consistent with the coexistence of the linear relations and exponential fall-off behavior of high energy string/D-brane amplitudes.
description: 9 pages,1 figure
Variability and multi-periodic oscillations in the X-ray light curve of the classical nova V4743 Sgr
Creators: name: Leibowitz, E.
name: Orio, M.
name: Gonzalez-Riestra, R.
name: Lipkin, Y.
name: Ness, J-U.
name: Starrfield, S.
name: Still, N.
name: Tepedelenlioglu, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The classical nova V4743 Sgr was observed with XMM-Newton for about 10 hours on April 4 2003, 6.5 months after optical maximum. At this time, this nova had become the brightest supersoft X-ray source ever observed. We present the results of a time series analysis performed on the X-ray light curve obtained in this observation, and in a previous shorter observation done with Chandra 16 days earlier. Intense variability, with amplitude as large as 40% of the total flux, was observed both times. Similarities can be found between the two observations in the structure of the variations. Most of the variability is well represented as a combination of oscillations at a set of discrete frequencies lower than 1.7 mHz. At least five frequencies are constant over the 16 day time interval between the two observations. We suggest that a periods in the power spectrum of both light curves at the frequency of 0.75 mHz and its first harmonic are related to the spin period of the white dwarf in the system, and that other observed frequencies are signatures of nonradial white dwarf pulsations. A possible signal with a 24000 sec period is also found in the XMM-Newton light curve: a cycle and a half are clearly identified. This period is consistent with the 24278 s periodicity discovered in the optical light curve of the source and thought to be the orbital period of the nova binary system.
description: In press in Monthly Notices of the Royal Astronomical Society
Applications of a natural deduction set theory
Creators: name: Tsiknis, George Konstantinos
Publisher: name: University of British Columbia
Year: 2011

description: The goal of this thesis is to demonstrate the versatility and suitability of a logic and set theory NaDSet for providing logical foundations to disparate areas of mathematics and computer science. Category theory has been chosen as the area of mathematics, while programming language semantics and semantics for the lambda calculus are the areas of computer science. In each of the three areas NaDSet provides a logical foundation using exactly the same "logistic" method: Basic concepts are defined as terms of the logic and then the logic is used to derive all theorems; no assumptions in the form of additional axioms or rules of deduction are needed. The thesis demonstrates the ease and directness with which this can be done for the three areas, suggesting that in other, as yet unexplored areas, NaDSet may prove to be equally useful.
Rational Ruijsenaars-Schneider hierarchy and bispectral difference operators
Creators: name: Iliev, Plamen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show that a monic polynomial in a discrete variable $n$, with coefficients depending on time variables $t_1, t_2,...$ is a $τ$-function for the discrete Kadomtsev-Petviashvili hierarchy if and only if the motion of its zeros is governed by a hierarchy of Ruijsenaars-Schneider systems. These $τ$-functions were considered in [12], where it was proved that they parametrize rank one solutions to a difference-differential version of the bispectral problem.
description: Comments, remarks end references added
Prophyllodictya khrevitsa Tolokonnikova & Fedorov 2023, n. sp.
Creators: name: Tolokonnikova, Zoya A.
name: Fedorov, Petr V.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Bryozoa
Stenolaemata
Cryptostomida
Rhinidictyidae
Prophyllodictya
Prophyllodictya khrevitsa

description: Prophyllodictya khrevitsa n. sp.
(Fig. 3, Table 1)
Holotype. CNIGR museum № 13/13403; surroundings of Khrevitsa village, Khrevitsa Formation, Ordovician (Sandbian); Leningrad region, Russia.
Additional material. CNIGR museum № 14/13403, 15/13403, 16/13403, 17/13403, 18/13403, 19/13403; same details as for the holotype.
Etymology. Named after the Khrevitsa Formation from which the specimens were collected. It is used as a name in apposition.
Diagnosis. Colony reticulate with branches lens-shaped in transversal section. Mesotheca slightly sinuous. Rare diaphragms. Autozooecial apertures arranged in regular diagonal rows. Paurostyles in a single row between autozooecial apertures.
Description. Colony bifoliate, reticulate. Branches lens-shaped in transversal section. Mesotheca slightly sinuous, lacking hyaline rods, 0.02 mm in thickness. Endozone is narrow. One or two diaphragms in autozooecial chambers. Autozooecia long, tubular, sharply bending near proximal end. Extrazooecial skeleton developed, distinctly lamellar.Autozooecial apertures on branch surfaces oval or subcircular, arranged in regular diagonal rows. Apertural interspaces and marginal area of branches ridged, occupied by paurostyles. Paurostyles usually arranged in a single row between autozooecial apertures and in gatherings on branch margins.
Comparison. Prophyllodictya khrevitsa n. sp. differs from P. putilovensis Lavrentjeva, 1993 (in Gorjunova & Lavrentjeva 1993) from the Dapingian-lower Darriwilian of Leningrad region in having narrower colonies (0.75–1.75 mm vs 3.00– 3.50 mm in P. putilovensis), regular arrangement of smaller paurostyles (0.01–0.02 mm vs confined location and 0.04–0.06 mm in P. putilovensis), and smaller apertures (0.06–0.08 x 0.14–0.18 mm vs 0.17–0.20 x 0.26–0.31 mm in P. putilovensis).
Stratigraphical and geographical ranges. Khrevitsa Formation, Ordovician (Sandbian); Leningrad region, Russia.
description: Published as part of Tolokonnikova, Zoya A. & Fedorov, Petr V., 2023, Morphological features of Late Ordovician (Sandbian) bryozoans from the basin of Khrevitsa River (north-western Russia) and description of a new species of the genus Prophyllodictya Gorjunova, 1987, pp. 337-350 in Zootaxa 5284 (2) on pages 340-341, DOI: 10.11646/zootaxa.5284.2.6, http://zenodo.org/record/7923480
Conceptual Analogies Between Multi-Scale Feeding and Feedback Cycles in Supermassive Black Hole and Cancer Environments
Creators: name: Santoni, Matteo
name: Tombesi, Francesco
name: Cimadamore, Alessia
name: Montironi, Rodolfo
name: Piva, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Adopting three physically-motivated scales (micro - meso - macro, which refer to mpc - kpc - Mpc, respectively) is paramount for achieving a unified theory of multiphase active galactic nuclei feeding and feedback, and it represents a keystone for astrophysical simulations and observations in the upcoming years. In order to promote this multi-scale idea, we have decided to adopt an interdisciplinary approach, exploring the possible conceptual similarities between supermassive black hole feeding and feedback cycles and the dynamics occurring in human cancer microenvironment.
description: Multidisciplinary article on Frontiers of Oncology (published on May 11th 2021)
Gas-liquid mass transfer rates by gas pumping : agitators in oxygen pressure leaching systems
Creators: name: Dawson-Amoah, James
Publisher: name: University of British Columbia
Year: 2010

description: Recent developments have indicated high oxygen consumption rates of about 35 g-mole/m³-min during oxidative pressure leaching. At such high oxygen consumption rates the mass transfer of dissolved oxygen at the gas-liquid interface may become rate-limiting. The objective of this study was to obtain an understanding of the gas-liquid mass transfer processes that take place in mechanically agitated pressure leaching systems. The classical reaction between sodium sulphite and dissolved oxygen to form sulphate at atmospheric pressure was used to determine the oxygen mass transfer rates in a 200-liter asymmetrical plastic tank, modelled after the shape of the first compartment of the zinc pressure leach. The effect of this asymmetry was compared with the work of Swiniarski who used a cylindrical symmetrical tank of similar volume. A number of process variables such as the impeller type and size, the impeller speed, the impeller immersion depth and the effect of full baffles that affect mixing were investigated. Also, the volumetric power consumption associated with the mass transfer rates were measured. The results indicate that the asymmetrical tank is at least 3.6 times more efficient in mass transfer than the symmetrical tank. There is a critical speed below which the mass transfer parameter, K[formula omitted], is almost zero and above which K[formula omitted] increases almost linearly with impeller tip speed. A simple energy balance model for bubble creation can predict the critical tip speed. It is shown that K[formula omitted] is enhanced at shallow depths, with a corresponding high mass transfer to energy ratio. The relative effectiveness of impeller types and sizes with regard to the use of power for gas-liquid mass transfer was established. Full baffles degrade the mass transfer rate at increased depth of impeller immersion. The results also add substantial support to the findings provided by DeGraaf [5] that: (i) The dimensionless correlations used in liquid mixing systems do not accurately predict dispersion rates by agitators. (ii) The optimum conditions for gas dispersion and the consequent generation of gas-liquid interfacial area are different from fluid mixing. (iii) The classical mixing power equations for impellers markedly overestimate power requirements during impeller gas dispersion.
Star-disk interaction in the T Tauri star V2129 Oph: An evolving accretion-ejection structure
Creators: name: Sousa, A. P.
name: Bouvier, J.
name: Alencar, S. H. P.
name: Donati, J. -F.
name: Alecian, E.
name: Roquette, J.
name: Perraut, K.
name: Dougados, C.
name: Carmona, A.
name: Covino, S.
name: Fugazza, D.
name: Molinari, E.
name: Moutou, C.
name: Santerne, A.
name: Grankin, K.
name: Artigau, É.
name: Delfosse, X.
name: Hebrard, G.
name: consortium, the SPIRou
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Classical T Tauri stars are young low-mass systems still accreting material from their disks. These systems are dynamic on timescales of hours to years. The observed variability can help us infer the physical processes that occur in the circumstellar environment. We aim at understanding the dynamics of the magnetic interaction between the star and the inner accretion disk in young stellar objects. We present the case of the young stellar system V2129 Oph, which is a well-known T Tauri star. We performed a time series analysis of this star using high-resolution spectroscopic data at optical and infrared wavelengths from CFHT/ESPaDOnS, ESO/HARPS and CFHT/SPIRou. The new data sets allowed us to characterize the accretion-ejection structure in this system and to investigate its evolution over a timescale of a decade via comparisons to previous observational data. We measure radial velocity variations and recover a stellar rotation period of 6.53d. However, we do not recover the stellar rotation period in the variability of various circumstellar lines, such as H$α$ and H$β$ in the optical or HeI 1083nm and Pa$β$ in the infrared. Instead, we show that the optical and infrared line profile variations are consistent with a magnetospheric accretion scenario that shows variability with a period of about 6.0d, shorter than the stellar rotation period. Additionally, we find a period of 8.5d in H$α$ and H$β$ lines, probably due to a structure located beyond the corotation radius, at a distance of 0.09au. We investigate whether this could be accounted for by a wind component, twisted or multiple accretion funnel flows, or an external disturbance in the inner disk. We conclude that the dynamics of the accretion-ejection process can vary significantly on a timescale of just a few years, presumably reflecting the evolving magnetic field topology at the stellar surface.
On the long-term learning ability of LSTM LMs
Creators: name: Boes, Wim
name: Van Rompaey, Robbe
name: Verwimp, Lyan
name: Pelemans, Joris
name: Van hamme, Hugo
name: Wambacq, Patrick
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We inspect the long-term learning ability of Long Short-Term Memory language models (LSTM LMs) by evaluating a contextual extension based on the Continuous Bag-of-Words (CBOW) model for both sentence- and discourse-level LSTM LMs and by analyzing its performance. We evaluate on text and speech. Sentence-level models using the long-term contextual module perform comparably to vanilla discourse-level LSTM LMs. On the other hand, the extension does not provide gains for discourse-level models. These findings indicate that discourse-level LSTM LMs already rely on contextual information to perform long-term learning.
Electromagnetic field induced suppression of transport through $n$-$p$ junctions in graphene
Creators: name: Fistul, M. V.
name: Efetov, K. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study quasi-particle transmission through an $n $-$p$ junction in a graphene irradiated by an electromagnetic field (EF). In the absence of EF the electronic spectrum of undoped graphene is gapless, and one may expect the perfect transmission of quasi-particles flowing perpendicular to the junction. We demonstrate that the resonant interaction of propagating quasi-particles with the component of EF parallel to the junction induces a \textit{non-equilibrium dynamic gap} $(2Δ_R)$ between electron and hole bands in the quasi-particle spectrum of graphene. In this case the strongly suppressed quasi-particle transmission is only possible due to interband tunnelling. The effect may be used for controlling transport properties of diverse structures in graphene, like, e.g., $n$-$p$-$n$ transistors, single electron transistors, quantum dots, etc., by variation of the intensity $S$ and frequency $ω$ of the external radiation.
description: 5 pages, 3 figures
Fixed-phase diffusion Monte Carlo study of the activation gap and the skyrmion excitation of $ν=1$ system in the presence of charged impurities
Creators: name: Zhao, Tongzhou
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The discrepancy between the theoretically calculated and experimentally measured activation gaps in quantum Hall effect has long been a puzzle. We revisit this issue in the context of the $ν=1$ quantum Hall state, while also incorporating the skyrmion physics. We find that the finite width and the Landau level mixing (LLM) effects are not sufficient to explain the observed activation gap. We further show that the presence of charged impurities located adjacent to the quantum well can cause a significant reduction in the activation gap, while also causing a suppression of the skyrmion size.
Μείωση των σεισμικών δράσεων σχεδιασμού των γεφυρών μέσω της παρεμπόδισης της ελεύθερης ταλάντωσης δια της εμπλοκής του ακροβάθρου και του μεταβατικού επιχώματος
Creators: name: Μητούλης, Στέργιος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Περιορισμός ταλάντωσης
Ακρόβαθρο-επίχωμα
Monement restraining
Abutment-backfill

description: Η παρούσα διδακτορική διατριβή είναι το αποτέλεσμα αναλυτικής, κυρίως, και πειραματικής έρευνας, η οποία έχει ως στόχο την μείωση των σεισμικών δράσεων σχεδιασμού των γεφυρών μέσω της παρεμπόδισης της ελεύθερης ταλάντωσής τους με την εμπλοκή του ακροβάθρου και του επιχώματος. Ο αντισεισμικός σχεδιασμός των σύγχρονων γεφυρών απαιτεί την ελεύθερη ταλάντωση των γεφυρών, χωρίς την συνεκτίμηση της δυναμικής αντίστασης του συστήματος ακροβάθρου-επιχώματος, τα οποία επιλέγει συνειδητώς, για λόγους σαφήνειας της αποκρίσεως, να κρατήσει έξω από τη "μάχη του σεισμού"
description: The present investigation aims to finding structural configurations which reduce the seismic actions of bridges. The above objective is foreseen through the improved seismic participation of the approach embankments, which dissipate part of the induced seismic energy. The seismic participation of the embankments, which are seismically inactive according to current conceptual design of bridges, is achieved through appropriate configurations of the abutments. The proposed technique concerns all bridge structures, especially those exhibiting large displacements during earthquake
Erinaceomorpha Gregory 1910
Creators: name: Jo, Yeong-Seok
name: Baccus, John T.
name: Koprowski, John L.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Erinaceomorpha

description: ORDER ERINACEOMORPHA Gregory, 1910   Erinaceomorpha used to be included in the Order Insectivora or Lipotyphla (Hutterer 2005a). Murphy et al. (2001) found that the Erinaceidae strongly clustered with the Soricidae and Talpidae, and therefore, placed the three families Erinaceidae, Soricidae, and Talpidae in the Order Eulipotyphla. Roca et al. (2004) confirmed this classification and included the Solenodontidae in the order. However, there remains disagreement over the Order Eulipotyphla (Vaughan et al. 2013). Here, we followed the classification proposed by Hutterer (2005a).
 In Korea, the order is represented by one species, Erinaceus amurensis, which ranges throughout the Korean Peninsula.
description: Published as part of Jo, Yeong-Seok, Baccus, John T. & Koprowski, John L., 2018, Mammals of Korea: a review of their taxonomy, distribution and conservation status, pp. 1-216 in Zootaxa 4522 (1) on pages 15-16, DOI: 10.11646/zootaxa.4522.1.1, http://zenodo.org/record/2610198
title: Inward and Outward FDI Country Profiles
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2011
Subjects: International law
Law and economics
Commerce
Business enterprises
Investments, Foreign
International relations

description: This compilation contains a series of standardized country profiles of inward and outward foreign direct investment (FDI), peer-reviewed by a global network of experts.  The publication is intended to contribute to the analysis of trends in foreign direct investment and policy issues related to them. The reports, which cover inward and outward FDI for 22 countries (13 developed economies and 9 emerging markets), include statistics on FDI stocks and flows, output and employment of foreign affiliates, and sectoral and geographical FDI distributions. The reports also list principal foreign affiliates (for inward FDI), principal multinational enterprises (for outward FDI), together with lists of recent major M&As and greenfield investments. The standardized template used to produce the reports is also included. This volume is designed to become a reference tool for anyone interested in foreign direct investment.
A new SPS programme
Creators: name: Gazdzicki, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A new experiemntal program to study hadron production in hadron-nucleus and nucleus-nucleus collisions at the CERN SPS has been recently proposed by the NA49-future collaboration. The physics goals of the program are: (i) search for the critical point of strongly interacting matter and a study of the properties of the onset of deconfinemnt in nucleus-nucleus collisions, (ii) measurements of correlations, fluctuations and hadron spectra at high transverse momentum in proton-nucleus collisions needed as for better understanding of nucleus-nucleus results, (iii) measurements of hadron production in hadron-nucleus interactions needed for neutrino (T2K) and cosmic-ray (Pierre Auger Observatory and KASCADE) expriments. The physics of the nucleus-nucleus program is reviewed in this presentation.
description: invited talk at 3rd International Workshop on the Critical Point and Onset of Deconfinement, July 3-6 2006, Florence, Italy
Algebraic evaluation of rational polynomials in one-loop amplitudes
Creators: name: Binoth, T.
name: Guillet, J. Ph.
name: Heinrich, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One-loop amplitudes are to a large extent determined by their unitarity cuts in four dimensions. We show that the remaining rational terms can be obtained from the ultraviolet behaviour of the amplitude, and determine universal form factors for these rational parts by applying reduction techniques to the Feynman diagrammatic representation of the amplitude. The method is valid for massless and massive internal particles. We illustrate this method by evaluating the rational terms of the one-loop amplitudes for gg --> H, the 4-photon and 4-gluon amplitude, the amplitude for 2 photons plus 3 gluons and the 6-photon amplitude.
description: 20 pages Latex, replaced with revised, slightly extended published version
Text Mining of Stocktwits Data for Predicting Stock Prices
Creators: name: Jaggi, Mukul
name: Mandal, Priyanka
name: Narang, Shreya
name: Naseem, Usman
name: Khushi, Matloob
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Machine Learning (cs.LG)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: Stock price prediction can be made more efficient by considering the price fluctuations and understanding the sentiments of people. A limited number of models understand financial jargon or have labelled datasets concerning stock price change. To overcome this challenge, we introduced FinALBERT, an ALBERT based model trained to handle financial domain text classification tasks by labelling Stocktwits text data based on stock price change. We collected Stocktwits data for over ten years for 25 different companies, including the major five FAANG (Facebook, Amazon, Apple, Netflix, Google). These datasets were labelled with three labelling techniques based on stock price changes. Our proposed model FinALBERT is fine-tuned with these labels to achieve optimal results. We experimented with the labelled dataset by training it on traditional machine learning, BERT, and FinBERT models, which helped us understand how these labels behaved with different model architectures. Our labelling method competitive advantage is that it can help analyse the historical data effectively, and the mathematical function can be easily customised to predict stock movement.
Open-Loop Control of Quantum Particle Motion: Effective Splitting in Momentum Space
Creators: name: Ahmad, Babar
name: Borisenok, Sergei
name: Saifullah
name: Rozhdestvensky, Yuri
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper an effective quantum particle beam-splitter in the momentum space is realized in the frame of open-loop control scheme. We demonstrate for small interaction time that the splitting effect $\pm40\hbar k$ with summarized relative intensity in both main components is about 50 per cent from initial intensity of the atomic beam.
description: 8 pages, 3 figures
Transcription of file 024_B (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio files VP-160815-03 and VP-160815-04: transcription of file 024_B (tape 24, side B) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from 7:20 to 11:15 (VP-160815-03) and 11:15 to 12:21 (VP-160815-04). Due to re-numbering, tape 024_B has been assigned to the CLA item number LA256.024, audio file LA256.024B.
Το μάθημα της φιλοσοφίας στη μέση εκπαίδευση από τη σκοπιά των μαθητών και των εκπαιδευτικών
Creators: name: Κυρίτσης, Δημήτρης
Publisher: name: Aristotle University of Thessaloniki
Year: 2008
Subjects: Μαθητές
Εκπαιδευτικοί
Μέση εκπαίδευση
Students
Teachers

description: Το θεωρητικό μέρος εκκινεί με τη δυσάρεστη διαπίστωση της περιορισμένης ενασχόλησης με το υπό διερεύνηση θέμα. Επειτα αναπτύσσεται η σημασία της ανθρωπιστικής διάστασης των εγκύκλιων σπουδών και τονίζεται η αξία και ο ρόλος που μπορεί να διαδραματίσει η φιλοσοφία. Στη συνέχεια παρουσιάζεται η εξέλιξη του μαθήματος της φιλοσοφίας στο εκπαιδευτικό σύστημα τεσσάρων ευρωπαϊκών χωρών με πλούσια φιλοσοφική παράδοση(Αγγλία, Γαλλία, Ιταλία) και της Ελλάδας. Το θεωρητικό μέρος κλείνει με τη συζήτηση της σχέσης του αναλυτικού προγράμματος προς τους αποδέκτες του, δηλαδή τους μαθητές και τους εκπαιδευτικούς. Στο εμπειρικό μέρος παρουσιάζονται τα ευρήματα της έρευνας, μεθοδολογία, η κατασκευή των ερευνητικών οργάνων, η επιλογή του δείγματος, η συλλογή και επεξεργασία των δεδομένων και τα αποτελέσματα της έρευνας. Τα ευρήματα παρουσιάζουν ενδιαφέρον και αφενός ανατρέπουν πολλές από τις κυρίαρχες απόψεις και αφετέρου επιβεβαιώνουν εμπειρικά ορισμένες υποθέσεις
description: The theoretical part od this thesis starts off with the unpeasant finding of the limmited pursuit of the science community with the under-study issue. Afterwards, the importance of the humanistic aspect of the prospectus is stressed out and special emphasis is given justifiably on the value and role that philosophy can implement. Later, the evolution of philosophy class in the educational system of four European Countries having a profound philosophical tradition is introduced(Germany, France, Italy and England) and the same is introduced for the greek educational system. The theoretical part ends with the debate of the analytical schedule towards its receptors. In the empirical part the queries of the research, the methodology, the manufacture of the researching instruments, the selection of the sample, the collection and the process of the date and the results of the research are being presented
Growth of Replacements
Creators: name: Bui, Vuong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 91A50, 05C57

description: The following game in a similar formulation to Petri nets and chip-firing games is studied: Given a finite collection of baskets, each has an infinite number of balls of the same value. Initially, a ball from some basket is chosen to put on the table. Subsequently, in each step a ball from the table is chosen to be replaced by some $2$ balls from some baskets. Which baskets to take depend only on the ball to be replaced and they are decided in advance. Given some $n$, the object of the game is to find the maximum possible sum of values $g(n)$ for a table of $n$ balls. In this article, the sequence $g(n)/n$ for $n=1,2,\dots$ will be shown to converge to a growth rate $λ$. Furthermore, this value $λ$ is also the rate of a structure called pseudo-loop and the solution of a rather simple linear program. The structure and the linear program are closely related, e.g. a solution of the linear program gives a pseudo-loop with the rate $λ$ in linear time of the number of baskets, and vice versa with the pseudo-loop giving a solution to the dual linear program. A method to test in quadratic time whether a given $λ_0$ is smaller than $λ$ is provided to approximate $λ$. When the values of the balls are all rational, we can compute the precise value of $λ$ in cubic time, using the quadratic time rate test algorithm and the binary search with a special condition to stop. Four proofs of the limit $λ$ are given: one just uses the relation between the baskets, one uses pseudo-loops, one uses the linear program and one uses Fekete's lemma (the latest proof assumes a condition on the rule of replacements).
description: 16 pages (publication version); adding a cubic time algorithm to compute precisely the growth rate, and the relation to the dual program
Η κοσμολογία και η ανθρωπολογία του C.S. Lewis: μία Ορθόδοξη κριτική προσέγγιση
Creators: name: Middleton, Andrew H.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Ετερόδοξος
Σωτηριολογία
Γνωσιολογία
Heterodox
Soteriology
Gnosiology

description: Ο Lewis ήταν καθηγητής στο Πανεπιστήμιο της Οξφόρδης και ίσως ο σημαντικότερος συγγραφέας θρησκευτικών βιβλίων που έγραψε στην αγγλική γλώσσα κατά τον 20ο αιώνα. Ενώ η Θεολογία του Lewis έχει ελλείψεις και προβλήματα, σε πολλά σημεία έχει και σημαντικά ανοίγματα προς την Ορθόδοξη Θεολογία. Ο Lewis καταλαβαίνει την ανάγκη για διαφορετικές μεθοδολογικές προσεγγίσεις :α) προς την επιστήμη και β)προς την Θεολογίας. Λόγω της γνωσιολογικής αντίληψης αυτής, ο Lewis δεν παγιδεύεται όπως παγιδεύονται οι περισσότεροι δυτικοί Θεολόγοι. Στην κοσμολογίας του, ο Lewis έχει έντονη αίσθηση της ζωντανής και άμεσης παρουσίας του θεού στη δημιουργία του, με την οποία έχει και στενή σχέση. Για τον Lewis, η δημιουργία είναι λίαν καλή. Ο Lewis έχει μια αίσθηση της παρουσίας του θεού στη δημιουργία του μοιάζει πολύ με την πατερική ιδέα των λόγων των όντων. Για τον Lewis, η συνείδηση του ανθρώπου έχει όχι μόνο ηθικό, αλλά και πραγματικό περιεχόμενο. O Lewis θεωρεί τη σωτηρία ως μια διαδικασία που χρειάζεται συνεργατική άσκηση από τον άνθρωπο. Η σωτηρία περιγράφεται ως "Ζωή εν Χριστώ" που αρχίζει στη ζωή αυτή. Η περιγραφή του για τη σωτηρία πλησιάζει πολύ την Ορθόδοξη αντίληψη και εμπειρία της Θέωσης
description: C.S. Lewis was a professor at Oxfrod University and was perhaps, the most influential religious writer in the English language during the 20th century. Although Lewis's theology has certain problems, there are many aspects of it that provide openings for dialogue with Orthodox theology. Lewis is aware of the need for different methodological approaches to a) science anf to 2)theology. Became of this gnosiological understanding Lewis does not often fall into the same traps that most of his western contemporaries fall into. Lewis's cosmology reveals a strong sense of a living and direct relationship letween God and His creation, with which he has a close relation. In Lewis's understanting the presence of God in creation resembles the Orthodox understanding of the "logoi ton onton". For Lewis, human consience has not only an ethical, but a Real dimension. Lewis's understanding of salution resembles that of Orthodoxy : it is a synergistic process, it is life in Christ, it is the strungle for theosis that begins in this life and extends into eternity
Tarchetti-Segur: μοίρα-γυναίκα-έρωτας
Creators: name: Καρυοφύλλη, Δήμητρα Ε.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Σκαπιλιατούρα
Φανταστικό στοιχείο
Δυτικός αισθητισμός
Scapigliatura
Woman

description: Τα κριτικά συμπεράσματα που αντλεί ο μελετητής από τη συγκριτική θεώρηση της λογοτεχνικής παραγωγής του Σεγκύρ και του Ταρκέττι συγκλίνουν στην άποψη ότι και οι δυο συγγραφείς θέλησαν να ιδανικοποιήσουν τον έρωτα, τον οποίο αντιμετώπισαν ως ένα παράξενο μυστήριο, ως τον πιο προφανή δεσμό του ανθρώπου με το σύμπαν, ως το ανώτερο ιδανικό που εξισώνει τον άνθρωπο με τους Θεούς. Η διαφορά τους είναι ότι για τον Σεγκύρ, ο έρωτας είναι δημιουργός, δίνει ζωή κι ανυψώνει τον άνθρωπο, ενώ για τον Ταρκέττι ο έρωτας εξαθλιώνει, επιφέρει το κενό των ιδανικών. Ο Ταρκέττι έχει στραμμένο το βλέμμα του προς το αμόλυντο ιδανικό του έρωτα, που είναι αρνητικό της ηδονής, ενώ στο έργο του Σεγκύρ κυριαρχεί ο έρωτας ως ύψιστη αποθέωση της ηδονής με την ταυτόχρονη συνδρομή της ψυχής. Και οι δυο συγγραφείς συμφωνούν ότι ο ερωτευμένος άνθρωπος υπακούει σε μια τυφλή, δεσποτική δύναμη, που τον μεταχειρίζεται σαν πιόνι, τη Μοίρα
description: The critical conclusions the researcher can draw from the comparative review of the literary works of Segur and Tarchetti converge to the notion that both writers intended to idealize love which they treated as a strange mystery, as the highest ideal which raises man to the lover of gods. Their difference is that for Segur love is a creator, giving life and at the same time elevating man whereas for Tarchetti love degrades and causes the void of ideals. Tarchetti focuses his vision towards the pure ideal of love, which is the negative of lust, while in the works of Segur love dominates on the highest glorification of lust with the simultaneous contribution of the soul. Respectively, the woman of Segur enjoys love, has a personal morality, which she defends without hypocrisy, whereas in Tarchetti the woman is presented as immoral and she is always the one holding man on earch, captive of his carnal desires, those that don't allow his soul to wonder pure in the world of ideas. Both writers agree that the man in love obeys continuously to a blind despotic power, which uses him a pawn, "Fate"
RACE-OC Project: Rotation and variability in the open cluster NGC2099 (M37)
Creators: name: Messina, S.
name: Distefano, E.
name: Parihar, Padmakar
name: Kang, Y. B.
name: Kim, S. -L.
name: Rey, S. -C.
name: Lee, C. -U.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Rotation and solar-type magnetic activity are closely related to each other in stars of G or later spectral types. Presence and level of magnetic activity depend on star's rotation and rotation itself is strongly influenced by strength and topology of the magnetic fields. Open clusters represent especially useful targets to investigate the connection between rotation and activity. The open cluster NGC2099 has been studied as a part of the RACE-OC project, which is aimed at exploring the evolution of rotation and magnetic activity in the late-type members of open clusters of different ages. Time series CCD photometric observations of this cluster were collected during January 2004. The relations between activity manifestations, such as the light curve amplitude, and global stellar parameters are investigated. We have discovered 135 periodic variables, 122 of which are candidate cluster members. Determination of rotation periods of G- and K-type stars has allowed us to better explore evolution of angular momentum at an age of about 500 Myr. A comparison with the older Hyades cluster (~625 Myr) shows that the newly determined distribution of rotation periods is consistent with the scenario of rotational braking of main-sequence spotted stars as they age. However, a comparison with the younger M34 cluster (~200 Myr) shows that the G8-K5 members of these clusters have the same rotation period distribution, that is G8-K5 members in NGC2099 seem to have experienced no significant braking in the age range from ~200 to ~500 Myr. Finally, NGC2099 members have a level of photospheric magnetic activity, as measured by light curve amplitude, smaller than in younger stars of same mass and rotation, suggesting that the activity level also depends on some other age-dependent parameters.
description: Accepted by A&A 26/02/2008
El limite de Chandrasekhar para principiantes / Chandrasekhar limit for beginners
Creators: name: Pinochet, Jorge
Publisher: name: arXiv
Year: 2021
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In a brief article published in 1931 and expanded in 1935, the Indian astrophysicist Subrahmanyan Chandrasekhar shared an important astronomical discovery where he introduced what is now known as Chandrasekhar limit. This limit establishes the maximum mass that a white dwarf can reach, which is the stellar remnant that is generated when a low mass star has used up its nuclear fuel. The present work has a double purpose. The first is to present a heuristic derivation of the Chandrasekhar limit. The second is to clarify the genesis of the discovery of Chandrasekhar, as well as the conceptual aspects of the subject. The exhibition only uses high school algebra, as well as some general notions of classical physics and quantum theory.
description: 14 pages, 2 figures, Text in Spanish
Particle physics and cosmology of the string derived no-scale flipped $SU(5)$
Creators: name: Antoniadis, Ignatios
name: Nanopoulos, Dimitri V.
name: Rizos, John
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a recent paper, we identified a cosmological sector of a flipped $SU(5)$ model derived in the free fermionic formulation of the heterotic superstring, containing the inflaton and the goldstino superfields with a superpotential leading to Starobinsky type inflation, while $SU(5){\times}U(1)$ is still unbroken. Here, we study the properties and phenomenology of the vacuum after the end of inflation, where the gauge group is broken to the Standard Model. We identify a set of vacuum expectation values, triggered by the breaking of an anomalous $U(1)_A$ gauge symmetry at roughly an order of magnitude below the string scale, that solve the F and D-flatness supersymmetric conditions up to 6th order in the superpotential which is explicitly computed, leading to a successful particle phenomenology. In particular, all extra colour triplets become superheavy guaranteeing observable proton stability, while the Higgs doublet mass matrix has a massless pair eigenstate with realistic hierarchical Yukawa couplings to quarks and leptons. The supersymmetry breaking scale is constrained to be high, consistent with the non observation of supersymmetric signals at the LHC.
description: 47 pages, no figures. v2: published version, few minor changes
Soricomorpha Gregory 1910
Creators: name: Jo, Yeong-Seok
name: Baccus, John T.
name: Koprowski, John L.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Soricomorpha

description: ORDER SORICOMORPHA Gregory, 1910   Soricomorpha, Erinaceomorpha, and Afrosoricida previously composed the single Order Insectivora or Lipotyphla (Hutterer 2005b). Currently, the Order Insectivora has a paraphyletic designation. Since Soricidae has a closer relationship to Erinaceidae than Talpidae, Soricomorpha also seems polyphyletic. Several mammalogists advocated combining Eulipotyphla with Erinaceomorpha and Soricomorpha (Waddell et al. 1999; Murphy et al. 2001; Roca et al. 2004). Since greater consensus does not exist for these orders (Vaughan et al. 2013), we followed Wilson and Reeder (2005).
In Korean, 13 species representing four genera and two families compose the Order Soricomorpha. In this review, we removed three species from Soricidae and confirmed 10 species (see below).
description: Published as part of Jo, Yeong-Seok, Baccus, John T. & Koprowski, John L., 2018, Mammals of Korea: a review of their taxonomy, distribution and conservation status, pp. 1-216 in Zootaxa 4522 (1) on page 16, DOI: 10.11646/zootaxa.4522.1.1, http://zenodo.org/record/2610198
Ταυτότητες φύλου στην οικογένεια: γονεϊκές πεποιθήσεις και πρακτικές και η υποκειμενική εμπειρία του ανδρισμού και της θηλυκότητας εκ μέρους των εφήβων
Creators: name: Μαζηρίδου, Ευδοξία
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γονεϊκές πρακτικές
Parenting

description: Η παρούσα διατριβή στοχεύει να διερευνήσει το ρόλο της οικογένειας στη διαμόρφωση της ταυτότητας του φύλου κατά την περίοδο της εφηβείας. Στην έρευνα συμμετείχαν 389 οικογένειες που διαμένουν στο αστικό κέντρο της Θεσσαλονίκης και την ευρύτερη περιοχή. Από τη στατιστική ανάλυση των δεδομένων προκύπτει ότι α)οι εμπειρίες κοινωνικοποίησης των φύλλων στο πλαίσιο της οικογένειας είναι διαφορετικές και συνδέονται με τις παραδοσιακές αντίλήψεις για τον ανδρισμό και τη θηλυκότητα, β) οι γονείς αντιμετωπίζουν διαφορετικά τα φύλα κυρίως σε ότι αφoρά στην ανάθεση καθηκόντων, στη σεξουαλικότητά τους και στις ελευθερίες που τους παραχωρούν, γ)το υψηλό μορφωτικό επίπεδο του γονέα καθώς και η απόρριψη των παραδοσιακών αντιλήψεων για τους ρόλους των φύλλων δεν εγγyώνται ισότιμη αντιμετώπιση των αγοριών και των κοριτσιών, δ)το πρότυπο οικογενειακών ρόλων που προσφέρεται στους/στις εφήβους είναι παραδοσιακό, ε)οι μεικτές οικογένειες αποτελούν ένα πλαίσιο που ευνοεί την ανάπτυξη πιο στενής σχέσης του/της εφήβου με τον ομόφυλο γονέα και στο οποίο η στερεοτυπική αντιμετώπιση των φύλων καθίσταται πιο έντονη. Ωστόσο, η σύνθεση της οικογένειας δε φαίνεται να επηρεάζει την αντιμετώπιση των φύλλων σε σχέση με την ανάθεση καθηκόντων και τη σεξουαλικότητα, και στ)οι έφηβοι/ες δομούν τον ανδρισμό και τη θηλυκότητα με βάση παραδοσιακές αντιλήψεις για τα φύλλα και φαίνεται να επηρεάζονται στη διαμόρφωση των απόψεών τους από τις αντίστοιχες απόψεις των γονέων τους και από την εμπειρία τους μέσα στην οικογένεια
description: The aim of the present doctoral thesis is to investigate the role of the family in the formation of gender identities during adolesence. The sample consisted of 389 families from the geographical area of Thessaloniki, Greece. Data analysis showed that : a)the adolescents' socioalization within the family are different for boys and girls and in agreement with traditional views about masculinity and feminity, b)the parents treat differently their boys and girls, especially with regard to household duties, sexuality and permissiveness, c)a high educational level and the rejection of the traditional ideology concerning gender roles does not necessarily mean that parents treat their boys and girls equally, d) the pattern of family roles follows the traditional division of labor withib the family, e)mixed-families present a context which reinforces the development of a more close relationship between the differential treatment of boys and girl is more intense-however, the composition of the family does not influence parents' sociolization practices with regard to household tasks and sexuality, and f)it seems that adolescents construct masculinity and femininity on the basis of traditional views about gender roles and that they are influenced by their parents' attitudes on gender roles as well as their experiences within the family context
The Reversibility Of Magnetic Reconnection
Creators: name: Xuan, M.
name: Swisdak, M.
name: Drake, J. F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The reversibility of the transfer of energy from the magnetic field to the surrounding plasma during magnetic reconnection is examined. Trajectories of test particles in an analytic model of the fields demonstrate that irreversibility is associated with separatrix crossings and regions of weaker magnetic field. Inclusion of a guide field increases the degree of reversibility. Full kinetic simulations with a particle-in-cell code support these results and demonstrate that while time-reversed simulations at first "un-reconnect", they eventually evolve into a reconnecting state.
The angular momentum of the gravitational field and the Poincare group
Creators: name: Maluf, J. W.
name: Ulhoa, S. C.
name: Faria, F. F.
name: da Rocha-Neto, J. F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We redefine the gravitational angular momentum in the framework of the teleparallel equivalent of general relativity. In similarity to the gravitational energy-momentum, the new definition for the gravitational angular momentum is coordinate independent. By considering the Poisson brackets in the phase space of the theory, we find that the gravitational energy-momentum and angular momentum correspond to a representation of the Poincaré group. This result allows us to define Casimir type invariants for the gravitational field.
description: 20 pages, no figures, accepted by Class. Quantum Gravity
Two-pion production in deuteron-deuteron collisions at low energies
Creators: name: Faldt, Goran
name: Tengblad, Ulla
name: Wilkin, Colin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The cross section for the dd -> 4He pi pi reaction is estimated near threshold in a two-step model where a pion created in a first interaction produces a second pion in a subsequent interaction. This approach, which describes well the rates of 2pi and eta production in the pd -> 3He pi pi and dd -> 4He eta reactions, leads to predictions that are much too low compared to experiment. Alternatives to this and the double-Delta model will have to be sought to explain these data.
description: 5 pages with 4 postscript figures
Improved CNN-based Learning of Interpolation Filters for Low-Complexity Inter Prediction in Video Coding
Creators: name: Murn, Luka
name: Blasi, Saverio
name: Smeaton, Alan F.
name: Mrak, Marta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Multimedia (cs.MM)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The versatility of recent machine learning approaches makes them ideal for improvement of next generation video compression solutions. Unfortunately, these approaches typically bring significant increases in computational complexity and are difficult to interpret into explainable models, affecting their potential for implementation within practical video coding applications. This paper introduces a novel explainable neural network-based inter-prediction scheme, to improve the interpolation of reference samples needed for fractional precision motion compensation. The approach requires a single neural network to be trained from which a full quarter-pixel interpolation filter set is derived, as the network is easily interpretable due to its linear structure. A novel training framework enables each network branch to resemble a specific fractional shift. This practical solution makes it very efficient to use alongside conventional video coding schemes. When implemented in the context of the state-of-the-art Versatile Video Coding (VVC) test model, 0.77%, 1.27% and 2.25% BD-rate savings can be achieved on average for lower resolution sequences under the random access, low-delay B and low-delay P configurations, respectively, while the complexity of the learned interpolation schemes is significantly reduced compared to the interpolation with full CNNs.
description: IEEE Open Journal of Signal Processing Special Issue on Applied AI and Machine Learning for Video Coding and Streaming, June 2021