cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Leo A: A Late-Blooming Survivor of the Epoch of Reionization in the Local Group
Creators: name: Cole, A. A.
name: Skillman, E. D.
name: Tolstoy, E.
name: Gallagher, J. S.
name: Aparicio, A.
name: Dolphin, A. E.
name: Gallart, C.
name: Hidalgo, S. L.
name: Saha, A.
name: Stetson, P. B.
name: Weisz, D. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: As part of a major program to use isolated Local Group dwarf galaxies as near-field probes of cosmology, we have obtained deep images of the dwarf irregular galaxy Leo A with the Advanced Camera for Surveys aboard the Hubble Space Telescope. From these images we have constructed a color-magnitude diagram (CMD) reaching apparent [absolute] magnitudes of (M475, M814) > (29.0 [+4.4], 27.9 [+3.4]), the deepest ever achieved for any irregular galaxy beyond the Magellanic Clouds. We derive the star-formation rate (SFR) as a function of time over the entire history of the galaxy. We find that over 90% of all the star formation that ever occurred in Leo A happened more recently than 8 Gyr ago. The CMD shows only a very small amount of star formation in the first few billion years after the Big Bang; a possible burst at the oldest ages cannot be claimed with high confidence. The peak SFR occurred ~1.5-4 Gyr ago, at a level 5-10 times the current value. Our modelling indicates that Leo A has experienced very little metallicity evolution; the mean inferred metallicity is consistent with measurements of the present-day gas-phase oxygen abundance. We cannot exclude a scenario in which ALL of the ancient star formation occurred prior to the end of the era of reionization, but it seems unlikely that the lack of star formation prior to ~8 Gyr ago was due to early loss or exhaustion of the in situ gas reservoir.
description: Accepted for publication in the Astrophysical Journal Letters; 5 pages, 3 figures (2 in color); uses emulateapj.sty
Gravitational perturbations from NHEK to Kerr
Creators: name: Castro, Alejandra
name: Godet, Victor
name: Simón, Joan
name: Song, Wei
name: Yu, Boyang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revisit the spectrum of linear axisymmetric gravitational perturbations of the (near-)extreme Kerr black hole. Our aim is to characterise those perturbations that are responsible for the deviations away from extremality, and to contrast them with the linearized perturbations treated in the Newman-Penrose formalism. For the near horizon region of the (near-)extreme Kerr solution, i.e. the (near-)NHEK background, we provide a complete characterisation of axisymmetric modes. This involves an infinite tower of propagating modes together with the much subtler low-lying mode sectors that contain the deformations driving the black hole away from extremality. Our analysis includes their effects on the line element, their contributions to Iyer-Wald charges around the NHEK geometry, and how to reconstitute them as gravitational perturbations on Kerr. We present in detail how regularity conditions along the angular variables modify the dynamical properties of the low-lying sector, and in particular their role in the new developments of nearly-AdS$_2$ holography.
description: 73 pages, 1 figure; v2: minor typos corrected; v3: matches published version
On the parabolic equation method in internal wave propagation
Creators: name: Trofimov, M. Yu.
name: Kozitskiy, S. B.
name: Zakharenko, A. D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A parabolic equation for the propagation of periodic internal waves over varying bottom topography is derived using the multiple-scale perturbation method. Some computational aspects of the numerical implementation are discussed. The results of numerical experiments on propagation of an incident plane wave over a circular-type shoal are presented in comparison with the analytical result, based on Born approximation.
description: Submitted to Coastal Engineering. 16 pages, 5 figures. One figure was excluded from article because of size problems
Οι σχέσεις των κωφών ατόμων με τους ακούοντες συνομηλίκους τους κατά την παιδική και εφηβική τους ηλικία: η οπτική των κωφών
Creators: name: Κοτσάνη, Ιφιγένεια Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Κώφωση
Σχέσεις κωφών με ακούοντες
Σχολείο και κωφοί
Deafness
Relationships between deaf and hearing peers
School and the deaf

description: Σκοπός της παρούσας μεταπτυχιακής εργασίας είναι η μελέτη της υπάρξης ή μη σχέσεων μεταξύ κωφών και ακουόντων κατά την παιδική και εφηβική τους ηλικία, καθώς και και η ενδεχόμενη σχέση της με την ένταξη στην κοινότητα των Κωφών, σύμφωνα με τις απόψεις των κωφών ατόμων. Παρουσιάζονται, αρχικά, βασικά θεωρητικά ζητήματα γύρω από το θέμα της κώφωσης, αναφορικά με τη διάγνωσή της και τις ιατρικές παρεμβάσεις οι οποίες πραγματοποιούνται. Στη συνέχεια, γίνεται αναφορά στην κοινότητα των Κωφών και σε όλα εκείνα τα στοιχεία που ολοκληρώνουν την καθημερινότητά τους, με έμφαση στη σημασία της Νοηματικής Γλώσσας αλλά και στη σύναψη σχέσεων μεταξύ κωφών και ακουόντων, επισημαίνοντας τους παράγοντες που ευνοούν ή δυσχεραίνουν αυτές τις σχέσεις. Βάσει, λοιπόν, των θεωρητικών ζητημάτων της έννοιας της κώφωσης, διερευνώνται οι απόψεις των κωφών ατόμων για τη σύναψη σχέσεων με ακούοντες συνομηλίκους τους ή μη κατά τα σχολικά χρόνια ενώ τονίζεται ο ρόλος του σχολείου και του οικογενειακού περιβάλλοντος στη σύναψη αυτών των σχέσεων.
description: The aim of the present thesis is to explore the existence or not of relations between deaf and hearing persons in childhood and adolescence age, as well as its possible relation to the integration into the Deaf community, according to the views of deaf people. Firstly, they are presented some basic theoretical issues concerning the topic of deafness, regarding the diagnosis and medical interventions that are performed. Furthermore, there is a reference to the Deaf community and to all those details which complete their daily lives. Also, an extra emphasis is given on the importance of Sign Language as well as the relations between deaf and hearing people while the factors that foster or hinder these relationships are being highlighted. Thus, according to all the above data concerning deafness, the views and opinions of deaf persons on the relationships with hearing peers during the school years are being investigated while an emphasis is being given to the importance of school and the family as factors that contribute towards the enstrengthen of these relationships.
Social Communication and Black Nationalism: An Application of Karl W. Deutsch's Model of Nationalism
Creators: name: O'Sullivan, Elizabethann
Publisher: name: Digital Repository at the University of Maryland
Year: 1970

description: In Nationalism and Social Communication Karl W. Deutsch has developed
a model to aid in the study of nationalism. The purpose of
this model is to enable the researcher, investigating a national movement,
to make some predictions concerning its outcome.
The purpose of this thesis was to test the adequacy of Deutsch's
model for a study of black nationalism in the United States, and to see
what, if any, predictions might be made concerning the outcome of such a
movement. The thesis was developed in accord with Deutsch's basic
framework: evidences from psychological and sociological research to
indicate the amount of social cohesion in the black community; applications
of various demographic data to determine the direction and
rate of assimilation; and, discussion of other factors, e.g., educational
facilities, which will further influence the direction of assimilation.
It was found that while there was some evidence of cohesion
within the black community, the community felt that its values and goals
could best be obtained in an integrated society. Population groups
which will either actively support or oppose a national movement have
grown rapidly since 1900, causing the black community to consciously
define itself. Language, educational, economic and cultural factors
that occur within the black community tend to be weakly differentiated,
if at all, from those in the general society. The only strong factor
differentiating the black community was that of symbols.
It was concluded that Deutsch's framework is adequate for
developing some insight into the future of black nationalism, but in
order to make prediction possible better criteria for determining the
assimilated population were needed. It was found that the integrationist
trend in the black community seems to be strong, but that continued
frustration in reaching goals might give impetus to a strong black
nationalist movement.
Αρχαιοβοτανικά δεδομένα από το Νεολιθικό οικισμό του Κλείτου Κοζάνης
Creators: name: Στυλιανάκου, Χαρούλα Ευάγγελου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Αρχαιοβοτανική
Νεολιθική
Κλείτος
Archaeobotany
Neolithic
Kleitos

description: Ο Νεολιθικός οικισμός του Κλείτου βρίσκεται 11 χιλιόμετρα ΒΑ της πόλης της Κοζάνης, μέσα στα όρια ανάπτυξης των λιγνιτωρυχείων της ΔΕΗ. Η ανασκαφή του οικισμού η οποία διεξήχθη κατά τα έτη 2006 - 2010, έχει φέρει στο φως δύο οικισμούς, τον Κλείτος 1 ο οποίος χρονολογείται στη Νεότερη Νεολιθική και τον Κλείτος 2 στον οποίο φαίνεται πως μεταφέρθηκε η κατοίκηση κατά την Τελική Νεολιθική. Καθ’ όλη τη διάρκεια της ανασκαφής υπήρξε συστηματική δειγματοληψία χώματος με σκοπό την συλλογή και μελέτη φυτικών καταλοίπων. Η χρήση και η καλλιέργεια των φυτών που εντοπίστηκαν στον οικισμό φαίνεται να έπαιζαν σημαντικό ρόλο στις καθημερινές τους δραστηριότητες. Στην παρούσα εργασία μέσα από τη μελέτη των φυτικών καταλοίπων, σε συνδυασμό με την περιοχή προέλευσής τους, αναζητούνται τα είδη που επέλεγαν οι κάτοικοι του νεολιθικού οικισμού να καταναλώσουν, να καλλιεργήσουν αλλά και να συλλέξουν από το ευρύτερο περιβάλλον του οικισμού με σκοπό να εμπλουτίσουν τη διατροφή τους ενώ ταυτόχρονα συμβάλλουν στη συνολική αρχαιοβοτανική έρευνα οικισμών του βορειοελλαδικού χώρου.
description: Kleitos is a Neolithic settlement near the city of Kozani. Excavations in this area which started in 2006 and lasted until 2010 have revealed two settlements ‘’Kleitos 1’’ dated to late Neolithic and ‘’Kleitos 2’’ dated to final Neolithic. The aim of the present paper is the study of plant charred remains, derived from Kleitos, in an attempt to reconstruct past human activity and to shed light on crop processing practices, production, consumption and discarding strategies. The discussion focuses on plant species chosen by the inhabitants of the Neolithic village for cultivation and on those that were gathered from the wider area of the settlement, in order to enrich their diet. The analysis of the achaeobotanical material indicates that the use and cultivation of cereals and legumes seem to have played an important role in daily activities, contributing to the general archaeobotanical research of the Neolithic in Northern Greece.
Autografi medievali e filologia. In margine a un convegno paleografico
Creators: name: Chiesa, Paolo
Publisher: name: Università degli Studi di Milano
Year: 2015
Subjects: autografi medievali; medieval autographs; filologia; philology

description: Partendo dalla pubblicazione degli Atti del convegno Medieval Autograph Manuscripts, organizzato a Lubiana dal Comité International de Paléographie Latine nel settembre 2010, si esprimono alcune considerazioni  sullo studio degli autografi letterari medievale, un terreno oggi ampiamente battuto anche sul versante filologico. I manoscritti autografi dimostrano fra l’altro che lo scrittore medievale era fortemente consapevole del proprio ruolo creativo, che si esprimeva non solo nella redazione del testo, ma anche nella determinazione della forma fisica del libro destinato a ospitare il testo (impostazione di pagina, strutturazione interna, elementi decorativi, paratesti). Rientra fra i compiti del filologo individuare o ricostruire tale “forma dell’opera” originale, quando è possibile, anche nel caso in cui del testo siano conservate solo copie derivate.

Reviewing the Proceedings of the conference Medieval Autograph Manuscripts (held in Ljubljana, Sept. 2010, promoted by Comité International de Paléographie Latine), this paper proposes some methodological remarks on medieval literary autographs, now widely studied also on the philological side. Literary autographs show that medieval writers were strongly aware of their creative role, expressed not only in making texts, but also in deciding the physical forms of the books (page setup, internal structure, decorative elements, paratexts). Identifying or reconstructing such an original “form of the work” (even, when possible, if the text is preserved only in apographs) belong to the philologists’ tasks.
description: Carte romanze, Vol 3, No 1 (2015)
Additional file 6 of The emerging role of lysine succinylation in ovarian aging
Creators: name: Le, Meiling
name: Li, Jia
name: Zhang, Dalei
name: Yuan, Yuan
name: Zhou, Chong
name: He, Jinxia
name: Huang, Jian
name: Hu, Liaoliao
name: Luo, Tao
name: Zheng, Liping
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Astronomical and Space Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 6.
Developing a Comprehensive Framework for Total Quality Management Implementation
Creators: name: Muhammad Waqas
Publisher: name: Zenodo
Year: 2024

description: This paper explores the implementation of Total Quality Management (TQM) practices across diverse industries through a thematic analysis of interviews conducted with professionals from manufacturing, service, healthcare, and IT sectors. Five key themes emerged from the analysis: leadership commitment, employee engagement, change management, customer-centricity, and continuous improvement. The interviews highlight the critical role of leadership support in driving TQM initiatives and fostering a culture of quality improvement. Additionally, the importance of engaging employees, managing change effectively, prioritizing customer needs, and embracing continuous learning and innovation are emphasized. By addressing these themes, organizations can enhance their TQM efforts and achieve sustainable quality improvement
Berry connection polarizability tensor and third-order Hall effect
Creators: name: Liu, Huiying
name: Zhao, Jianzhou
name: Huang, Yue-Xin
name: Feng, Xiaolong
name: Xiao, Cong
name: Wu, Weikang
name: Lai, Shen
name: Gao, Wei-bo
name: Yang, Shengyuan A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: One big achievement in modern condensed matter physics is the recognition of the importance of various band geometric quantities in physical effects. As prominent examples, Berry curvature and the Berry curvature dipole are connected to the linear and the second-order Hall effects, respectively. Here, we show that the Berry connection polarizability (BCP) tensor, as another intrinsic band geometric quantity, plays a key role in the third-order Hall effect. Based on the extended semiclassical formalism, we develop a theory for the third-order charge transport and derive explicit formulas for the third-order conductivity. Our theory is applied to the two-dimensional (2D) Dirac model to investigate the essential features of the BCP and the third-order Hall response. We further demonstrate the combination of our theory with the first-principles calculations to study a concrete material system, the monolayer FeSe. Our work establishes a foundation for the study of third-order transport effects, and reveals the third-order Hall effect as a tool for characterizing a large class of materials and for probing the BCP in band structure.
description: 7 pages, 4 figures
Probing two-electron multiplets in bilayer graphene quantum dots
Creators: name: Möller, Samuel
name: Banszerus, Luca
name: Knothe, Angelika
name: Steiner, Corinne
name: Icking, Eike
name: Trellenkamp, Stefan
name: Lentz, Florian
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Glazman, Leonid
name: Fal'ko, Vladimir
name: Volk, Christian
name: Stampfer, Christoph
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on finite bias spectroscopy measurements of the two-electron spectrum in a gate defined bilayer graphene (BLG) quantum dot for varying magnetic fields. The spin and valley degree of freedom in BLG give rise to multiplets of 6 orbital symmetric and 10 orbital anti-symmetric states. We find that orbital symmetric states are lower in energy and separated by $\approx 0.4 - 0.8$ meV from orbital anti-symmetric states. The symmetric multiplet exhibits an additional energy splitting of its 6 states of $\approx 0.15 - 0.5$ meV due to lattice scale interactions. The experimental observations are supported by theoretical calculations, which allow to determine that inter-valley scattering and 'current-current' interaction constants are of the same magnitude in BLG.
description: 6 pages, 3 figures
Evaluation of CD45 protein expression and transcript in canine small clear cell/T zone lymphoma.
Creators: name: Cozzi, Marzia
name: Martini, Valeria
name: Marconato, Laura
name: Aresu, Luca
name: Comazzi, Stefano
Publisher: name: Department of Health, Animal Science and Food Safety (VESPA)
Year: 2015
Subjects: T zone lymphoma; CD45; expression

description: Canine small clear cell lymphoma is a peculiar lymphoma entity with T-zone histopathological pattern andindolent clinical course. From an immunophenotypic point of view the main feature is the lack of CD45 staining by flow-cytometry (FC), which accounts for >95% of cases. Underlying mechanisms have never been investigated.

Aim of this work was to evaluate CD45 protein and mRNA expression in small clear cell lymphoma.

Lymph nodes of 18 cases and 11 controls, with either reactive hyperplasia or CD45-positive high grade T-cell lymphoma, were investigated. FC was performed on lymph node fine needle aspiration and CD45 median fluorescence intensity (MFI) was then evaluated on small clear cells and normal residual T-lymphocytes. CD45 surface expression was also evaluated by immunohistochemical reaction on paraffin wax-embedded lymph node sections.

Quantitative real-time RT-PCR was performed on cases and controls. Total RNA was isolated from cell suspension in RNA later. The generated CD45cDNA was amplified and ΔΔCt method was used for the relative mRNA quantification.

CD45-MFI in neoplastic cells was <1% compared to normal residual T-lymphocytes in the same sample. Cells were also negative for CD45 stain on histopathological preparations. RT-PCR showed a significantly lower amount of CD45 transcript in neoplastic samples compared to controls, likely due to the residual population.

Results showed the lack of CD45 surface antigen and the virtually absence of CD45-mRNA in small clear cell lymphoma. We hypothesize a possible genomic/epigenomic aberration; further studies are in progress to investigate the pathogenesis of this aberrancy and the possible linkage to lymphomagenesis.
description: International Journal of Health, Animal Science and Food Safety, Vol 2, No 1s (2015): Proceeding of Veterinary and Animal Science Days
Evidence for Carrier-Induced High-Tc Ferromagnetism in Mn-doped GaN film
Creators: name: Yoshii, S.
name: Sonoda, S.
name: Yamamoto, T.
name: Kashiwagi, T.
name: Hagiwara, M.
name: Yamamoto, Y.
name: Akasaka, Y.
name: Kindo, K.
name: Hori, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A GaN film doped with 8.2 % Mn was grown by the molecular-beam-epitaxy technique. Magnetization measurements show that this highly Mn-doped GaN film exhibits ferromagnetism above room temperature. It is also revealed that the high-temperature ferromagnetic state is significantly suppressed below 10 K, accompanied by an increase of the electrical resistivity with decreasing temperature. This observation clearly demonstrates a close relation between the ferromagnetism with extremely high-Tc and the carrier transport in the Mn-doped GaN film.
description: 9 pages, 3 figures
Crafting a Holistic Framework for Total Quality Management: Insights from High-Performing Organizations
Creators: name: Muhammad Waqas
Publisher: name: Zenodo
Year: 2024

description: Total Quality Management (TQM) is a holistic approach to quality improvement that has been embraced by organizations worldwide to drive excellence in products, services, and operations. This study explores the TQM practices of three prominent organizations— Toyota Motor Corporation, Samsung Electronics Co., Ltd., and Mayo Clinic—through thematic analysis of interviews with key stakeholders. Five key themes emerged from the analysis: commitment to quality, continuous improvement, employee empowerment, customer-centric approach, and innovation and adaptability. These themes highlight the core principles and practices of TQM and their importance in driving organizational success. The findings suggest that organizations can achieve sustainable growth and competitive advantage by integrating TQM into their organizational culture and operations.
Dose and batch-dependent hepatobiliary toxicity of 10 nm silver nanoparticles
Creators: name: De Maglie, Marcella
name: Cella, Claudia
name: Bianchessi, Silvia
name: Argentiere, Simona
name: Scanziani, Eugenio
name: Recordati, Camilla
Publisher: name: Department of Health, Animal Science and Food Safety (VESPA)
Year: 2015

description: Silver nanoparticles (AgNPs) are widely used because of their antimicrobial properties in medical devices and in a variety of consumer products. The extensive use of AgNPs raises concerns about their potential toxicity, although it is still difficult to draw definite conclusions about their toxicity based on published data. Our preliminary studies performed to compare the effect of the AgNPs size (10-40-100 nm) on toxicity, demonstrated that the smallest AgNPs determine the most severe toxicological effects. In order to best investigate the impact of physicochemical characteristics of 10 nm AgNPs on toxicity, we compare three different batches of 10 nm AgNPs slightly different in size distribution (Batch A: 8.8±1.7 nm; Batch B: 9.4±1.7 nm; Batch C: 10.0±1.8 nm). Mice were intravenously treated with two doses (5 and 10 mg/kg) of the 3 AgNPs. 24 hours after the treatment, mice were euthanized and underwent complete necropsy. Tissues were collected for histopathological examination and total silver content was determined in tissues by inductively coupled plasma mass spectrometry (ICP-MS). All batches induced severe hepatobiliary lesions, i.e. marked hepatocellular necrosis and massive hemorrhage of the gall bladder. The toxicity was dose-dependent and interestingly, the toxic effects were more severe in mice treated with batches A and B that contained smaller AgNPs. Since the total silver mass concentration was similar, the observed batch-dependent toxicity suggest that even subtle differences in size may contribute to relevant changes in the toxicological outcomes, confirming the fundamental involvement of physicochemical features with respect to toxicity.
description: International Journal of Health, Animal Science and Food Safety, Vol 2, No 1s (2015): Proceeding of Veterinary and Animal Science Days
QCD factorization of the four-lepton decay $B^-\rightarrow \ell \barν_\ell \ell^{(\prime)} \bar{\ell}^{(\prime)}$
Creators: name: Beneke, Martin
name: Böer, Philipp
name: Rigatos, Panagiotis
name: Vos, Kimberley Keri
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the first search for the rare charged-current $B$ decay to four leptons, $\ell \barν_\ell \ell^{(\prime)} \bar{\ell}^{(\prime)}$, we calculate the decay amplitude with factorization methods. We obtain the $B\to γ^*$ form factors, which depend on the invariant masses of the two lepton pairs, at leading power in an expansion in $Λ_{\rm QCD}/m_b$ to next-to-leading order in $α_s$, and at $\mathcal{O}(α_s^0)$ at next-to-leading power. Our calculations predict branching fractions of a few times $10^{-8}$ in the $\ell^{(\prime)} \bar{\ell}^{(\prime)}$ mass-squared bin up to $q^2=1~\text{GeV}^2$ with $n_+q>3~$GeV. The branching fraction rapidly drops with increasing $q^2$. An important further motivation for this investigation has been to explore the sensitivity of the decay rate to the inverse moment $λ_B$ of the leading-twist $B$ meson light-cone distribution amplitude. We find that in the small-$q^2$ bin, the sensitivity to $λ_B$ is almost comparable to $B^- \rightarrow \ell^- \barν_\ellγ$ when $λ_B$ is small, but with an added uncertainty from the light-meson intermediate resonance contribution. The sensitivity degrades with larger $q^2$.
description: 22 pages, 7 figures; v2: study of the sensitivity to the shape of the B-LCDA added (Sec. 4.4). Matches published version
AdS Taub-Nut Space and the O(N) Vector Model on a Squashed 3-Sphere
Creators: name: Yonge, Mark D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note, motivated by the Klebanov-Polyakov conjecture we investigate the strongly coupled O(N) vector model at large $N$ on a squashed three-sphere and its holographic relation to bulk gravity on asymptotically locally $AdS_4$ spaces. We present analytical results for the action of the field theory as the squashing parameter $α\to-1$, when the boundary becomes effectively one dimensional. The dual bulk geometry is AdS-Taub-NUT space in the corresponding limit. In this limit we solve the theory exactly and show that the action of the strongly coupled boundary theory scales as $\ln(1+α)/ (1+α)^2$. This result is remarkably close to the $-1/(1+α)^2$ scaling of the Einstein gravity action for AdS-Taub-NUT space. These results explain the numerical agreement presented in hep-th/0503238, and the soft logarithmic departure is interpreted as a prediction for the contribution due to higher spin fields in the bulk $AdS_4$ geometry.
description: 11 pages, 3 figures. References added
Nature and strength of bonding in a crystal of semiconducting nanotubes: van der Waals density functional calculations and analytical results
Creators: name: Kleis, Jesper
name: Schroder, Elsebeth
name: Hyldgaard, Per
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dispersive interaction between nanotubes is investigated through ab initio theory calculations and in an analytical approximation. A van der Waals density functional (vdW-DF) [Phys. Rev. Lett. 92, 246401 (2004)] is used to determine and compare the binding of a pair of nanotubes as well as in a nanotube crystal. To analyze the interaction and determine the importance of morphology, we furthermore compare results of our ab initio calculations with a simple analytical result that we obtain for a pair of well-separated nanotubes. In contrast to traditional density functional theory calculations, the vdW-DF study predicts an intertube vdW bonding with a strength that is consistent with recent observations for the interlayer binding in graphitics. It also produce a nanotube wall-to-wall separation which is in very good agreement with experiments. Moreover, we find that the vdW-DF result for the nanotube-crystal binding energy can be approximated by a sum of nanotube-pair interactions when these are calculated in vdW-DF. This observation suggests a framework for an efficient implementation of quantum-physical modeling of the CNT bundling in more general nanotube bundles, including nanotube yarn and rope structures.
description: 10 pages, 4 figures
Η αξιοποίηση του χιούμορ στην εκπαίδευση: μια μελέτη περίπτωσης στο μάθημα της Ιστορίας
Creators: name: Βύρλιου, Φωτεινή Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Χιούμορ
Μελέτη Περίπτωσης
Ανάλυση Περιεχομένου
Humor
Case Study
Content Analysis

description: Πρόκειται για μεταπτυχιακή εργασία που σκοπό της έχει την προώθηση της αξιοποίησης του χιούμορ στη δευτεροβάθμια εκπαίδευση με τρόπους που να παράγονται συγκεκριμένα μαθησιακά αποτελέσματα. Για το λόγο αυτό σχεδιάστηκε μια διδακτική εφαρμογή, προκειμένου να διερευνηθεί πώς και με ποιές μορφές μπορεί να αξιοποιηθεί το χιούμορ στο μάθημα της Ιστορίας. Συγκεκριμένα στο ερευνητικό μέρος, το οποίο αποτελεί μια μελέτη περίπτωσης, σχεδιάστηκε ένα πρόγραμμα διδασκαλίας με την αξιοποίηση τεχνικών του χιούμορ στο πλαίσιο της συνεργατικής μάθησης. Η ενότητα που επιλέχθηκε να διδαχθεί είναι η «Κατοχή- Αντίσταση». Η διδασκαλία έγινε σε μαθητές της τρίτης γυμνασίου, οι οποίοι δούλεψαν σε ομάδες, και μέσω αυτής οι μαθητές βίωσαν την καθημερινότητα της εποχής εκείνης και συνειδητοποίησαν πως το γέλιο αποτελεί μια πράξη ελευθερίας. Αξίζει να σημειωθεί πως κάθε ομάδα διαχειριζόταν κι ένα κομμάτι της ιστορικής περιόδου, μια διαφορετική πτυχή του θέματος, ενώ παράλληλα σε όλες υπήρχε μια ιστορική ακολουθία, σχέσης αιτίου- αποτελέσματος. Τέλος, το υλικό που είχε να επεξεργαστεί η κάθε ομάδα προερχόταν από πολλαπλές πηγές, βασικό προτέρημα της μελέτης περίπτωσης, και διέφερε από ομάδα σε ομάδα.
description: The aim of the present thesis is to promote humour in secondary education in ways that produce specific learning outcomes. For this reason, a lesson plan was designed in order to examine how and in what forms we can use humor in History class. In the empirical part of this paper specifically, which is a case study, a lesson plan was designed by the use of humor techniques in the context of collaborative learning. The section chosen to be taught is: “The occupation of Greece by the forces of Axis (Katochi) – Resistance”. The lesson was attended by third class high school students, who worked in groups, and through this procedure the students experienced the daily life of that time and realised that laughter is an act of freedom. Also, it should be mentioned that each of the groups handled a different aspect of the subject, while in all of them there was a historical sequence, a cause- effect relationship. Finally, the material, which each group had to process, came from multiple sources, an advantage of a case study, and it differed for each group.
Entanglement distribution in the Quantum Symmetric Simple Exclusion Process
Creators: name: Bernard, Denis
name: Piroli, Lorenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the probability distribution of entanglement in the Quantum Symmetric Simple Exclusion Process, a model of fermions hopping with random Brownian amplitudes between neighboring sites. We consider a protocol where the system is initialized in a pure product state of $M$ particles, and focus on the late-time distribution of Rényi-$q$ entropies for a subsystem of size $\ell$. By means of a Coulomb gas approach from Random Matrix Theory, we compute analytically the large-deviation function of the entropy in the thermodynamic limit. For $q>1$, we show that, depending on the value of the ratio $\ell/M$, the entropy distribution displays either two or three distinct regimes, ranging from low- to high-entanglement. These are connected by points where the probability density features singularities in its third derivative, which can be understood in terms of a transition in the corresponding charge density of the Coulomb gas. Our analytic results are supported by numerical Monte Carlo simulations.
description: 6 pages, 3 figures; v2: minor revision
Analysis of the Greek Public Spending LOD
Creators: name: Κλωνάρας, Μιχαήλ Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Δημόσιες δαπάνες
Διασυνδεδεμένα Δεδομένα
Διαύγεια
Gephi
Public Spending
Linked Data
Diavgeia

description: Η αδιαπραγμάτευτη απαίτηση για διαφάνεια στις Δημόσιες δαπάνες σε συνδυασμό με την άνθηση των ανοιχτών και διασυνδεδεμένων δεδομένων (Open Data & Linked Data), έχουν οδηγήσει στη δημιουργία ελεύθερων διαδικτυακών σημείων πρόσβασης σε σημασιολογικά επεξεργασμένα δεδομένα, που στόχο έχουν να προωθήσουν τη διαφάνεια και να ενισχύσουν την ενημέρωση για τα δημόσια οικονομικά. Το «ΠΟΥ ΠΑΝΕ ΟΙ ΦΟΡΟΙ ΜΟΥ» ή καλύτερα το “publicspending.gr”είναι μια τέτοια πρωτοβουλία που αφορά την Ελλάδα. Βασίζεται στα δεδομένα που παράγονται από τη «Διαύγεια» και το TAXIS. Η παρούσα διπλωματική εργασία χρησιμοποιεί σημασιολογικά επεξεργασμένα δεδομένα που παρήχθησαν από το publicspending.gr και χρησιμοποιώντας εργαλεία της θεωρίας ανάλυσης δικτύων σε συνδυασμό με το λογισμικό απεικόνισης δικτύων Gephi, εξετάζει τις δυνατότητες που προσφέρουν στην ανάλυση των δεδομένων και στην παραγωγή εύληπτων γραφικών αναπαραστάσεων των πληροφοριών που ενυπάρχουν στα δεδομένα. Τα αποτελέσματα που προέκυψαν είναι ενθαρρυντικά καθώς εμφάνισαν συνέπεια με τα δεδομένα και προσφέρουν πολύ ενδιαφέρουσες απεικονίσεις οι οποίες προσφέρουν άμεση και συμπυκνωμένη πληροφορία σχετικά με την κατεύθυνση, εξέλιξη και διάχυση των δημοσίων δαπανών στην οικονομία και στην κοινωνία ευρύτερα.
description: Linked Data, emerged as the latest A recent, unprecedented demand for transparency within the public sector and its associated expenses together with the emergence of Open and Linked Data, led to the creation of several Open and/or Linked Data portals for this purpose. Via them one may currently contribute as well as obtain such related data whose main purpose is to promote this transparency but also to enhance the information about public expenses. The “publicspending.gr” project is such an initiative concerning the country of Greece and data that originate from the efforts of “Diavgeia” and “TAXIS”. In fact, this thesis itself was based upon semantically processed data, which were generated by the same project. These data were then analyzed by employing graph theory and via an open-source software to visualize the large network graphs that were produced by them. As a tool, Gephi enabled among other things the exploration, analysis, spatialization, filtering, and manipulation of the associated graphs. The goal was to display graphs in real-time and via their exploration identify ways to exploit any information, hidden within the data on hand. Thus said, the results occurred by the implementation are encouraging as they proved concise to the input data and deliver most interesting visualizations conveying straightforward and concentrated information regarding the direction, evolution and diffusion of public expenditures in economy and thus in society.
Discovery of the Widest Very Low Mass Binary
Creators: name: Artigau, Étienne
name: Lafrenière, David
name: Doyon, René
name: Albert, Loïc
name: Nadeau, Daniel
name: Robert, Jasmin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a very low mass binary system (primary mass <0.1 Msol) with a projected separation of ~5100 AU, more than twice that of the widest previously known system. A spectrum covering the 1-2.5 microns wavelength interval at R ~1700 is presented for each component. Analysis of the spectra indicates spectral types of M6.5V and M8V, and the photometric distance of the system is ~62 pc. Given that previous studies have established that no more than 1% of very low mass binary systems have orbits larger than 20 AU, the existence of such a wide system has a bearing on very low mass star formation and evolution models.
description: accepted ApJL, 4 pages
Dynamic Many-Light Sampling for Real-Time Ray Tracing
Creators: name: Moreau, Pierre
name: Pharr, Matt
name: Clarberg, Petrik
Publisher: name: The Eurographics Association
Year: 2019
Subjects: Computing methodologies
Ray tracing

description: Monte Carlo ray tracing offers the capability of rendering scenes with large numbers of area light sources-lights can be sampled stochastically and shadowing can be accounted for by tracing rays, rather than using shadow maps or other rasterizationbased techniques that do not scale to many lights or work well with area lights. Current GPUs only afford the capability of tracing a few rays per pixel at real-time frame rates, making it necessary to focus sampling on important light sources. While state-of-the-art algorithms for offline rendering build hierarchical data structures over the light sources that enable sampling them according to their importance, they lack efficient support for dynamic scenes. We present a new algorithm for maintaining hierarchical light sampling data structures targeting real-time rendering. Our approach is based on a two-level BVH hierarchy that reduces the cost of partial hierarchy updates. Performance is further improved by updating lower-level BVHs via refitting, maintaining their original topology. We show that this approach can give error within 6% of recreating the entire hierarchy from scratch at each frame, while being two orders of magnitude faster, requiring less than 1 ms per frame for hierarchy updates for a scene with thousands of moving light sources on a modern GPU. Further, we show that with spatiotemporal filtering, our approach allows complex scenes with thousands of lights to be rendered with ray-traced shadows in 16.1 ms per frame.
description: High-Performance Graphics - Short Papers
description: Doing More With Each Ray
description: 21
description: 26
description: Pierre Moreau, Matt Pharr, and Petrik Clarberg
description: CCS Concepts: Computing methodologies --> Ray tracing
Effect of pseudogap on electronic anisotropy in the strain dependence of the superconducting $T_c$ of underdoped YBa$_2$Cu$_3$O$_y$
Creators: name: Frachet, M.
name: Campbell, D. J.
name: Missiaen, A.
name: Benhabib, S.
name: Laliberté, F.
name: Borgnic, B.
name: Loew, T.
name: Porras, J.
name: Nakata, S.
name: Keimer, B.
name: Tacon, M. Le
name: Proust, C.
name: Paul, I.
name: LeBoeuf, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: For orthorhombic superconductors we define thermodynamic anisotropy $N \equiv d T_c/d ε_{22} - dT_c/d ε_{11}$ as the difference in how superconducting $T_c$ varies with strains $ε_{ii}$, $i=(1, 2)$, along the in-plane directions. We study the hole doping ($p$) dependence of $N$ on detwinned single crystals of underdoped YBa$_2$Cu$_3$O$_y$ (YBCO) using ultrasound technique. While the structural orthorhombicity of YBCO reduces monotonically with decreasing doping over $0.065
Το Τυπικό του αγίου Νικοδήμου Αρχιεπισκόπου της Σερβίας
Creators: name: Glavcic, Milomir (Αρχιμ. Αρσένιος) Bogdan
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Τυπικό
Νικόδημος
Σερβία
Typikon
Nicodemus
Serbia

description: Ο σκοπός αυτής της μελέτης είναι να καθοριστεί η συνεισφορά του Τυπικού του αγίου Νικοδήμου, του Αρχιεπίσκοπου της Σερβίας, στην εξέλιξη της θείας λατρείας στην Ορθόδοξη Εκκλησία της Σερβίας στο δέκατο τέταρτο αιώνα, καθώς και η επίδρασή του Τυπικού αυτού στα μεταγενέστερα σερβικά λειτουργικά τυπικά. Στο πρώτο κεφάλαιο γίνεται λόγος περί της ζωής του αγίου Νικοδήμου και των ιστορικών περιστάσεων, στις οποίες βρισκόταν η Σερβία την εποχή του ζούσε ο Αρχιεπίσκοπος, έπειτα για την λογοτεχνική παραγωγή του και για την Ακολουθία του αγίου Νικοδήμου, που την έγραψε ο Μάρκος, ο Επίσκοπος του Πεκίου. Στη συνέχεια εξεθέσαμε την ιστορία πώς δημιουργήθηκε το Τυπικό με την ιδαίτερη αναφορά στην προέλευση του προτότυπου, το οποίο χρησιμοποίησε ο άγιος Νικόδημος. Έπειτα δόθηκαν τα βασικά χαρακτηριστικά του χειρογράφου και τέλος αναλύθηκε το περιεχόμενο του Τυπικού, όπου αναδείχθηκαν οι ιδιαιτερότητες του Τυπικού, που δεν συναντάμε στην σημερινή πράξη. Στο τρίτο και στο τελευταίο κεφάλαιο, με την αντιπαραβολή των χειρόγραφων πηγών από το δέκατο τέταρτο έως το δέκατο έβδομο αιώνα με το Τυπικό του Νικοδήμου, επιβεβαιώνεται η επίδρασή του στα μεταγενέστερα σερβικά τυπικά. Περαιτέρω στη μελέτη μας αναφερόμαστε και στη ρωσική επίδραση στη σερβική θεία λατρεία στο δέκατο έβδομο και δέκατο όγδοο αιώνα, και τέλος στο Τυπικό του αγίου Νικοδήμου και στη σύγχρονη λειτουργική πράξη στη Σερβία.
description: The aim of this study is to ascertain the contribution of the Typikon of St. Nicodemus, Archbishop of Serbia, to the development of Divine Services in Serbia in the fourteenth century as well as its influence on later Serbian typikons of Divine Services. The first chapter relates to St. Nicodemus’ life and historical circumstances in Serbia in his time, then to Nicodemus’ literary work and the Service to St. Nicodemus written by Bishop Marco of Peć. In the next part of the study, the history of the origin of the Typikon with special reference to the origin of the manuscript copy used by St. Nicodemus is presented, then basic characteristics of the Typikon manuscript are given and finally the Content of the Typikon is analyzed, where some peculiarities not characteristic of the contemporary practice are pointed out. In the third and last chapter, by comparing the manuscript sources from the fourteenth to the seventeenth century with the Typikon of St. Nicodemus, its influence on later Serbian typikons is examined. The next part deals with Russian influence on Serbian Divine Services in the seventeenth and eighteenth century and, in the end, with the Typikon of St. Nicodemus and contemporary practice of Divine Services in Serbia.
Η εορτή της Mεταμορφώσεως του Σωτήρος στη Βυζαντινή Μελοποιία
Creators: name: Νικηφόρου, Σωτήρης Αγαθάγγελου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: Εορτή της Μεταμορφώσεως
Βυζαντινή Μουσική
Feast of the Transfiguration
Byzantine music

description: Στόχος της διατριβής ήταν να αναδειχθεί ότι η Υμνογραφία και η Βυζαντινή Μελοποιία είναι άρρηκτα συνδεμένες με την εορτή της Μεταμορφώσεως αφού ο ρόλος τους είναι καταλύτικος στις ακολουθίες της εορτής. Παράλληλα μέσα από τους ύμνους και την εκτέλεση τους βγαίνουν όλα τα θεολογικά μηνύματα της εορτής τα οποία έχουν σκοπό να ενισχύσουν και να ενδυναμώσουν τους πιστούς. Επιπλέον μέσα από τους χειρόγραφους κώδικες Βυζαντινής Μουσικής της Εθνικής Βιβλιοθήκης της Ελλάδας αλλά και της Βιβλιοθήκης του Μετοχίου του Παναγίου Τάφου αναδεικνύονται οι θησαυροί της Βυζαντινής Μελοποίιας ενώ καταδεικνύεται η συνέχιση και η παράδοση της εκκλησιαστικής μουσικής με το πέρασμα των αιώνων. Αρχικά γίνεται μια μικρή αναφορά σε εορτολογικά στοιχεία της εορτής και εξετάζεται η πρώτη εμφάνιση της στην εκκλησίας μας. Ακολούθως καταγράφουμε την δομή των ακολουθιών της εορτής μέσα από τέσσερα τυπικά της Εκκλησίας μας. Το δεύτερο και κύριο μέρος είναι το μουσικολογικό όπου παρουσιάζονται τα πανομοιότυπα χειρόγραφων κωδίκων από ύμνους της εορτής. Γίνεται επίσης σύγκριση από μελοποιήσεις διαφόρων διδασκάλων και μελοποιών.
description: The aim of the present thesis was to highlight that Hymnography and Byzantine music is inextricably linked with the feast of the Transfiguration since their role is crucial in the service of the feast. At the same time, through their hymns and and the setting of these to music come all the theological messages of the feast which are designed to enhance and strengthen believers. Additionally through the Byzantine Music manuscripts of the National Library of Greece and the Library of the Dependency of Holy Sepulchre emerge treasures of Byzantine setting to music and demonstrate the continuity and tradition of church music over the centuries. Initially it’s studied the first appearance of the feast. Furthermore the structure of Services are analyzed from four Typicon of our Church. The second and main part is the musicological and presented identical manuscripts of byzantine music with hymns of the feast. Finally Byzantine setting to music of hymns of the feast are compared by various composers and teachers.
One-Loop Amplitudes in Supersymmetric QCD from MHV Vertices
Creators: name: Kunitomo, Hiroshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Cachazo-Svrcek-Witten (CSW) rule for efficiently calculating gauge theory amplitudes is extended to N=1 supersymmetric QCD (SQCD), incorporating massless quarks, in a way preserving the manifest supersymmetry. Using this extended CSW rule, we obtain compact expressions of all the one-loop MHV amplitudes in SQCD including one or two external quark-antiquark (chiral-antichiral multiplets) pairs. The collinear sigularities of the five point amplitudes are investigated to confirm the consistency of the results.
description: 43pages,5figures,PTPTex;v2 2references and related footnote are added;v3 English is improved, to appear in Prog. Theor. Phys
Stochastic Lightcuts
Creators: name: Yuksel, Cem
Publisher: name: The Eurographics Association
Year: 2019

description: We introduce stochastic lightcuts by combining the lighting approximation of lightcuts with stochastic sampling for efficiently rendering scenes with a large number of light sources. Our stochastic lightcuts method entirely eliminates the sampling correlation of lightcuts and replaces it with noise. To minimize this noise, we present a robust hierarchical sampling strategy, combining the benefits of importance sampling, adaptive sampling, and stratified sampling. Our approach also provides temporally stable results and lifts any restrictions on the light types that can be approximated with lightcuts. We present examples of using stochastic lightcuts with path tracing as well as indirect illumination with virtual lights, achieving more than an order of magnitude faster render times than lightcuts by effectively approximating direct illumination using a small number of light samples, in addition to providing temporal stability. Our comparisons to other stochastic sampling techniques demonstrate that we provide superior sampling quality that matches and improves the excellent convergence rates of the lightcuts approach.
description: High-Performance Graphics - Short Papers
description: Doing More With Each Ray
description: 27
description: 32
description: Cem Yuksel