cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Eugene Garfield's Scholarly Impact: A Scientometric Review
Creators: name: Chen, Chaomei
Publisher: name: arXiv
Year: 2017
Subjects: subject: Digital Libraries (cs.DL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: The concept of citation indexing has become deeply involved in many parts of research itself and the broad environment in which research plays an integral role, ranging from research evaluation, numerous indicators, to an increasingly wider range of scientific disciplines. In this article, we pay tribute to Eugene Garfield and present a scientometric review of the intellectual assets that he brought to us. In addition, we explore the intellectual landscape that has subsequently evolved in connection to many of his ideas. We illustrate what systematic reviews of the scientific literature may reveal and what we may learn from the rich information conveyed through citation-induced patterns. The study is conducted with CiteSpace, one of many science mapping tools based on data from the Web of Science and Scopus. Without Garfield's inventions, none of these would be possible.
description: 24 pages, 19 Figures, 15 Tables
Andronov--Hopf bifurcation of higher codimensions in a Liénard system
Creators: name: Schneider, Klaus
name: Grin, Alexander
Publisher: name: Weierstrass Institute
Year: 2011
Subjects: subject: Degenerate Hopf bifurcation
subject: codimension three
subject: multiple limit cycles
subject: bifurcation diagrams
subject: 34A34
subject: 34C05
subject: 34C23
subject: 37G15
subject: 05.45.Xt
subject: 89.75.Kd

description: Consider a polynominal Liènard system depending on three parameters itshape a, b, c and with the following properties: (i) The origin is the unique equilibrium for all parameters. (ii) Ifitshape a crosses zero, then the origin changes its stability, and a limit cycle bifurcates from the euqilibrium. We inverstigate analytically this bifurcation in dependence on the parameters itshape b and itshape c and establish the existence of families of limit cycles of multiplicity one, two and three bifurcating from the origin.
Futures trading with transaction costs
Creators: name: Janecek, Karel
name: Shreve, Steven
Publisher: name: Carnegie Mellon University
Year: 2010
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: A model for optimal consumption and investment is posed whose solution is provided by the classical Merton analysis when there is zero transaction cost. A probabilistic argument is developed to identify the loss in value when a proportional transaction cost is introduced. There are two sources of this loss. The first is a loss due to “displacement” that arises because one cannot maintain the optimal portfolio of the zero-transaction-cost problem. The second loss is due to “transaction,” a loss in capital that occurs when one adjusts the portfolio. The first of these increases with increasing tolerance for departure from the optimal portfolio in the zero-transaction-cost problem, while the second decreases with increases in this tolerance. This paper balances the marginal costs of these two effects. The probabilistic analysis provided here complements earlier work on a related model that proceeded from a viscosity solution analysis of the associated Hamilton–Jacobi–Bellman equation.
Kramers--Kronig relations and high order nonlinear susceptibilities
Creators: name: Brée, Carsten
name: Demircan, Ayhan
name: Steinmeyer, Günter
Publisher: name: Weierstrass Institute
Year: 2011
Subjects: subject: Nonlinear Optics
subject: Femtosecond Filamentation
subject: Pulse compression
subject: 78A60
subject: 42.65.-k
subject: 42.65.An
subject: 42.65.Jx
subject: 42.65.Hw

description: As previous theoretical results recently revealed, a Kramers-Kronig transform of multiphoton absorption rates allows for a precise prediction on the dispersion of the nonlinear refractive index $n_2$ in the near IR. It was shown that this method allows to reproduce recent experimental results on the importance of the higher-order Kerr effect. Extending these results, the current manuscript provides the dispersion of $n_2$ for all noble gases in excellent agreement with reference data. It is furthermore established that the saturation and inversion of the nonlinear refractive index is highly dispersive with wavelength, which indicates the existence of different filamentation regimes. While shorter laser wavelengths favor the well-established plasma clamping regime, the influence of the higher-order Kerr effect dominates in the long wavelength regime.
title: Ubykh1, listeV
Creators: name: Michailovsky, Boyd
name: Dumézil, Georges
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Ubykh
subject: uby

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Nonextensive aspects of small-world networks
Creators: name: Hasegawa, Hideo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Nonextensive aspects of the degree distribution in Watts-Strogatz (WS) small-world networks, $P_{SW}(k)$, have been discussed in terms of a generalized Gaussian (referred to as {\it $Q$-Gaussian}) which is derived by the three approaches: the maximum-entropy method (MEM), stochastic differential equation (SDE), and hidden-variable distribution (HVD). In MEM, the degree distribution $P_Q(k)$ in complex networks has been obtained from $Q$-Gaussian by maximizing the nonextensive information entropy with constraints on averages of $k$ and $k^2$ in addition to the normalization condition. In SDE, $Q$-Gaussian is derived from Langevin equations subject to additive and multiplicative noises. In HVD, $Q$-Gaussian is made by a superposition of Gaussians for random networks with fluctuating variances, in analogy to superstatistics. Interestingly, {\it a single} $P_{Q}(k)$ may describe, with an accuracy of $\mid P_{SW}(k)-P_Q(k)\mid \siml 10^{-2} $, main parts of degree distributions of SW networks, within which about 96-99 percents of all $k$ states are included. It has been demonstrated that the overall behavior of $P_{SW}(k)$ including its tails may be well accounted for if the $k$-dependence is incorporated into the entropic index in MEM, which is realized in microscopic Langevin equations with generalized multiplicative noises.
description: 22 pages, 11 figures, accepted in Physca A with some augmentations
Stellar streams as gravitational experiments II. Asymmetric tails of globular cluster streams
Creators: name: Thomas, Guillaume F.
name: Famaey, Benoit
name: Ibata, Rodrigo
name: Renaud, Florent
name: Martin, Nicolas F.
name: Kroupa, Pavel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Kinematically cold tidal streams of globular clusters (GC) are excellent tracers of the Galactic gravitational potential at moderate Galactocentric distances, and can also be used as probes of the law of gravity on Galactic scales. Here, we compare for the first time the generation of such streams in Newtonian and Milgromian gravity (MOND). We first compute analytical results to investigate the expected shape of the GC gravitational potential in both frameworks, and we then run N-body simulations with the Phantom of Ramses code. We find that the GCs tend to become lopsided in MOND. This is a consequence of the external field effect which breaks the strong equivalence principle. When the GC is filling its tidal radius the lopsidedness generates a strongly asymmetric tidal stream. In Newtonian dynamics, such markedly asymmetric streams can in general only be the consequence of interactions with dark matter subhalos, giant molecular clouds, or interaction with the Galactic bar. In these Newtonian cases, the asymmetry is the consequence of a very large gap in the stream, whilst in MOND it is a true asymmetry. This should thus allow us in the future to distinguish these different scenarios by making deep observations of the environment of the asymmetric stellar stream of Palomar 5. Moreover, our simulations indicate that the high internal velocity dispersion of Palomar 5 for its small stellar mass would be natural in MOND.
description: 10 pages, 6 figures accepted for publication in A&A. The movie of Fig 3 can be watched at http://astro.unistra.fr/fileadmin/upload/DUN/observatoire/Images/GFThomas_MONDPal5stream_movie.mp4
title: The Temporal and Spatial Distribution of Blue Crab Larvae on the Mid-Atlantic Bight Adjacent to the Chesapeake Bay, 1982-1983
Creators: name: Varnell, Lyle Michael
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1989

description: Recruitment processes are important information for the management of commercially and recreationally exploited marine species. Recruitment processes of the Chesapeake Bay's most important commercial and recreational species, the blue crab, are unknown, due in part to the lack of knowledge of the processes directly preceeding recruitment.

The present study was undertaken to investigate and explain the movement and developmental patterns of blue crab larvae while offshore. Interannual and intraseasonal variations of these patterns were also examined.

Sampling occurred from May to November during 1982 and 1983. Larvae were collected at three depths (neuston layer (upper 10 cm), one meter and three meters) from eighteen stations covering the bay mouth and the mid-Atlantic bight adjacent to the Chesapeake Bay.

A total of 494 samples containing 4,936,543 larvae were collected during the study. Sixty eight percent of the total larvae were collected in 1982. Stage I larvae dominated the collections in both years.

Peak abundances of all larval stages combined occurred in mid-July in 1982 and mid-August in 1983. Wild developmental rates, determined by calculating mean dates, were not significantly different between 1982 and 1983 for stage I, II and III larvae (P=0.2254) and were consistent with laboratory developmental rates.

Mean distances from bay mouth increased from stage I to stage VI each year. Postlarvae mean distances were less than mean distances from stages V-VIII each year, but were never less than 30 miles from the bay mouth. Center of mass calculations, defining two dimensional movement patterns, are presented for total larvae and for each larval stage. Center of mass for total larvae was influenced greatly by the large proportion of stage I larvae in the total sample and was within approximately 20 miles of the bay mouth at all sampled dates. Center of mass for each larval stage varied with stage and/or year. Second order center of mass was calculated to define the average seasonal location patterns of blue crab larvae. Center of mass locations between stage I larvae and postlarvae were dissimilar each year; however, postlarvae second order center of mass was approximately the same each year (about 30 miles east-southeast of the bay mouth).

All larval stages displayed tendencies toward the neuston layer. Significant differences in depth distribution were apparent only for postlarvae in 1983, and for all larval stages except stage III and stage VIII larvae in 1982. These differences are most likely attributable to sea state and may partially explain the differences in movement patterns from 1982 to 1983.
Some abstract error estimates of a finite volume scheme for a nonstationary heat equation on general nonconforming multidimensional spatial meshes
Creators: name: Bradji, Abdallah
name: Fuhrmann, Jürgen
Publisher: name: Weierstrass Institute
Year: 2011
Subjects: subject: Non-conforming grid
subject: nonstationary heat equation
subject: SUSHI scheme
subject: implicit scheme
subject: discrete gradient
subject: 65M08
subject: 65M15
subject: 35K15

description: A general class of nonconforming meshes has been recently studied for stationary anisotropic heterogeneous diffusion problems by R. Eymard and coworkers. Thanks to these basic ideas developed for stationary problems, we derive a new discretization scheme in order to approximate the nonstationary heat problem. The unknowns of this scheme are the values at the centre of the control volumes, at some internal interfaces, and at the mesh points of the time discretization. Although the numerical scheme stems from the finite volume method, its formulation is based on the discrete version for the weak formulation defined for the heat problem. We derive error estimates for the solution in discrete norm, and an error estimate for an approximation of the gradient, in a general framework in which the discrete bilinear form is satisfying ellipticity. We prove in particular, that, when the discrete flux is calculated using a stabilized discrete gradient, the convergence order is h+k , where h (resp. k) is the mesh size of the spatial (resp. time) discretization. This estimate is valid under the regularity assumption that the exact solution is twice continuously differentiable in time and space. These error estimates are useful because they allow us to get error estimates for the approximations of the exact solution and its first derivatives.
title: Ubykh1, listeVI
Creators: name: Michailovsky, Boyd
name: Dumézil, Georges
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Ubykh
subject: uby

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
On a singularly perturbed initial value problem in case of a double root of the degenerate equation
Creators: name: Butuzov, Valentin F.
name: Nefedov, Nikolai N.
name: Recke, Lutz
name: Schneider, Klaus
Publisher: name: Weierstrass Institute
Year: 2011
Subjects: subject: singularly perturbed first order ordinary differential equation
subject: initial value problem
subject: boundary layer
subject: double root of degenerate equation
subject: asymptotic expansion
subject: 34A12
subject: 34E05
subject: 34E15

description: We study the initial value problem of a singularly perturbed first order ordinary differential equation in case that the degenerate equation has a double root. We construct the formal asymptotic expansion of the solution such that the boundary layer functions decay exponentially. This requires a modification of the standard procedure. The asymptotic solution will be used to construct lower and upper solutions guaranteeing the existence of a unique solution and justifying its asymptotic expansion.
Of song and soul : how a young man in Botswana is redefining his traditional culture in the modern world
Creators: name: Weaver, Emree Malone
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Botswana
San
Hunter-gatherers
Ghanzi District
D'kar
Marginalized ethnic groups
African ethnic groups
San culture
Culture preservation
Central Kalahari Game Reserve
Cultural assimilation

description: The San are an ethnic group that are among the closest living relatives to early humans in southern Africa and have been living in present-day Botswana for at least 25,000 years. They historically lived in egalitarian, hunter-gatherer societies moving freely across the semi-arid Kalahari region with animal migrations. They have become the most marginalized ethnic group in southern Africa and have faced many modern challenges, such as loss of land and traditional practices, assimilation into dominant cultures and lack of educational and economic opportunities. Due to the San’s cultural distinctiveness, outsiders have often deemed their traditional way of life as worthy of protecting for the sake of humanity, often forcing the San to remain as “relics” of early hunter-gatherer societies. While many San themselves consider their cultural heritage as important to preserve, this has created a tug-of-war between tradition and modern, forcing the San to choose one or the other. Alfred Cg’ase Tshumu, who goes by his self-given name “Alphynho”, is a 27-year-old San living in D’kar, a community west of the Central Kalahari Game Reserve, determined to move himself and his people forward while still holding onto traditional practices and indigenous knowledge passed down from elders. He is a multi-faceted person and aspiring musician, striving for upward mobility through his skills as an entrepreneur. His story illustrates the vibrancy of San culture alongside the contemporary challenges his people face
title: Ubykh1, listeVII
Creators: name: Michailovsky, Boyd
name: Dumézil, Georges
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Ubykh
subject: uby

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
A new model of a tidally disrupted star
Creators: name: Ivanov, P. B.
name: Novikov, I. D.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new semi-analytical model of a star evolving in a tidal field is proposed. The model is a generalization of the so-called 'affine' stellar model. In our model the star is composed of elliptical shells with different parameters and different orientations, depending on time and on the radial Lagrangian coordinate of the shell. The evolution equations of this model are derived from the virial relations under certain assumptions, and the integrals of motion are identified. It is shown that the evolution equations can be deduced from a variational principle. The evolution equations are solved numerically and compared quantitatively with the results of 3D numerical computations of the tidal interaction of a star with a supermassive black hole. The comparison shows very good agreement between the main ``integral'' characteristics describing the tidal interaction event in our model and in the 3D computations. Our model is effectively a one-dimensional Lagrangian model from the point of view of numerical computations, and therefore it can be evolved numerically $10^{2}-10^{3}$ times faster than the 3D approach allows. This makes our model well suited for intensive calculations covering the whole parameter space of the problem.
description: This version is accepted for publication in ApJ. Stylistic and grammatical changes, new Appendix added
Supportive discipline is here to stay : Texas high schools make headway against the school-to-prison pipeline
Creators: name: DeLosSantos, Christopher David
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: High school discipline
School-to-prison pipeline
Positive behavior interventions
Positive behavior supports
Positive high school discipline
Supportive discipline
Supportive high school discipline
High school student behavior improvement

description: The discipline models employed in U.S. schools tend to swing back and forth like a slow pendulum. Following the tragic shootings at Columbine in 1999, districts around the U.S. began to employ policies now known as zero tolerance. By the middle of the 2000s decade, Texas school districts and state legislators — progressive and conservative alike — realized that zero tolerance no longer worked. Together, lawmakers, regional education service centers and school districts began to roll back zero tolerance. Gradually, educators implemented aa variety of supportive discipline methods across the state. By the time of the 2014 Federal letter from the civil rights offices in the Education and Justice Departments, Texas schools had already made great headway in reducing exclusionary discipline while simultaneously improving student behavior. Texas can be a model for other states. This is a 6800 word piece of longform journalism, written to be suitable for publication in a magazine such as Texas Monthly or The New Yorker
Predicting emission line fluxes and number counts of distant galaxies for cosmological surveys
Creators: name: Valentino, F.
name: Daddi, E.
name: Silverman, J. D.
name: Puglisi, A.
name: Kashino, D.
name: Renzini, A.
name: Cimatti, A.
name: Pozzetti, L.
name: Rodighiero, G.
name: Pannella, M.
name: Gobat, R.
name: Zamorani, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We estimate the number counts of line emitters at high redshift and their evolution with cosmic time based on a combination of photometry and spectroscopy. We predict the H$α$, H$β$, [OII], and [OIII] line fluxes for more than $35,000$ galaxies down to stellar masses of $\sim10^9$ $M_{\odot}$ in the COSMOS and GOODS-S fields, applying standard conversions and exploiting the spectroscopic coverage of the FMOS-COSMOS survey at $z\sim1.55$ to calibrate the predictions. We calculate the number counts of H$α$, [OII], and [OIII] emitters down to fluxes of $1\times10^{-17}$ erg cm$^{-2}$ s$^{-1}$ in the range $1.4 < z < 1.8$ covered by the FMOS-COSMOS survey. We model the time evolution of the differential and cumulative H$α$ counts, steeply declining at the brightest fluxes. We expect $\sim9,300-9,700$ and $\sim2,300-2,900$ galaxies deg$^{-2}$ for fluxes $\geq1\times10^{-16}$ and $\geq2\times10^{-16}$ erg cm$^{-2}$ s$^{-1}$ over the range $0.9
description: Accepted for publication in MNRAS. 21 pages (+9 pages of appendix), 18 Figures. Machine readable tables will be available online
title: Ανάπτυξη εκπαιδευτικής εφαρμογής για κινητές συσκευές με χρήση κινήτρων στη μάθηση
title: Development of an educational application for mobile devices using motivation in learning
titleType: AlternativeTitle
Creators: name: Βλάχου, Πολυξένη
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: App inventor
Μυθολογία
Κίνητρα
Malone
Lepper
Bloom

description: Στην παρούσα εργασία παρουσιάζεται η δημιουργία και ανάπτυξη μιας εκπαιδευτικής εφαρμογής μέσω του MIT Αpp Inventor. Η εφαρμογή απευθύνεται σε μαθητές της Γ’ τάξης Δημοτικού, ωστόσο θα μπορούσε να γίνει χρήση της και σε λίγο μεγαλύτερα ή μικρότερα παιδιά. Το αντικείμενο διδασκαλίας είναι η Μυθολογία και συγκεκριμένα η εξοικείωση με τους 12 Θεούς του Ολύμπου. Το συγκεκριμένο διδακτικό αντικείμενο συνδέεται με πολλά κεφάλαια της ιστορίας σε διάφορες τάξεις του Δημοτικού, καθώς το Δωδεκάθεο συνδεόταν και με άλλους μύθους, ενώ ταυτόχρονα αποτελούσε αναπόσπαστο κομμάτι της καθημερινότητας στην αρχαιότητα. Ο σχεδιασμός της εφαρμογής βασίζεται σε δύο θεμελιώδεις θεωρίες, τη θεωρία της ταξινομίας των εκπαιδευτικών στόχων του Benjamin Bloom, αλλά και στη θεωρία ταξινομίας των εσωτερικών κινήτρων των Malone & Lepper. Η αποτελεσματικότητα της διδασκαλίας και της μάθησης μιας διδακτικής ενότητας εξαρτάται τους μαθησιακούς στόχους που τη διέπουν, γι’ αυτό κι η εφαρμογή της θεωρίας του Bloom στην εφαρμογή είναι μείζονος σημασίας. Μια διδασκαλία θα κριθεί επιτυχής ή αποτελεσματική στο μέτρο που θα συμβάλει στην επίτευξη των επιθυμητών μαθησιακών στόχων στο τέλος του μαθήματος. Κίνητρα χρησιμοποιούνται σε όλα τα στάδια της εφαρμογής, καθώς θεωρούνται ιδιαίτερα σημαντικά σε τέτοιου είδους μορφές εκπαίδευσης. Η χρήση των κινήτρων, όχι μόνο ωθεί τους μαθητές προς τη μάθηση, αλλά παράλληλα διευρύνει την έκταση και το είδος της προσπάθειας που καταβάλλουν για να κατακτήσουν τη γνώση. Σε περίπτωση δυσκολιών, τα κίνητρα δρουν υποστηρικτικά, κάνοντάς τους να επιμένουν παρά τις δυσκολίες τους.
Scattering of time-harmonic electromagnetic plane waves by perfectly conducting diffraction gratings
Creators: name: Hu, Guanghui
name: Rathsfeld, Andreas
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: Electromagnetic scattering
subject: diffraction gratings
subject: variational approach
subject: mortar technique
subject: non-uniqueness
subject: 78A45
subject: 35J20
subject: 35R30
subject: 78A46

description: Consider scattering of time-harmonic electromagnetic plane waves by a doubly periodic surface in $R^3$. The medium above the surface is supposed to be homogeneous and isotropic with a constant dielectric coefficient, while below is a perfectly conducting material. This paper is concerned with the existence of quasiperiodic solutions for any frequency of incidence. Based on an equivalent variational formulation established by the mortar technique of Nitsche, we verify the existence of solutions for a broad class of incident waves including plane waves, under the assumption that the grating profile is a Lipschitz biperiodic surface. Our solvability result covers the resonance case where a Rayleigh frequency is allowed. Non-uniqueness examples are also presented in the resonance case and the TE or TM polarization case for classical gratings.
title: Ubykh1, listeX
Creators: name: Michailovsky, Boyd
name: Dumézil, Georges
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Ubykh
subject: uby

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
title: Αυτισμός,λόγος και επικοινωνία - Μελέτη περίπτωσης παιδιού με σύνδρομο Asperger
title: Autism, speech and communication - case study child with Asperger syndrom
titleType: AlternativeTitle
Creators: name: Κοκκίνου, Παναγιώτα
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Asperger
Αυτισμός
Επικοινωνία
Παρέμβαση

description: Ο αυτισμός συνιστά μία ιδιαίτερα σημαντική παρέκκλιση από την ομαλή αναπτυξιακή πορεία της παιδικής ηλικίας. Η συγκεκριμένη μελέτη εξέταση τη διαταραχή φάσματος αυτισμού, τα επικοινωνιακά και γλωσσικά ελλείμματα των παιδιών, τις σχετικές παρεμβάσεις και τις σχετικές περιπτώσεις της βιβλιογραφίας όπου περιγράφονται μαθητές συγκεκριμένα με σύνδρομο Asperger. Ως κεντρικά συμπεράσματα μπορούν να θεωρηθούν τα εξής: 1. Ο αυτισμός συνιστά μία χαμηλής συχνότητας διαταραχή με πολυπαραγοντική αιτιολογία, παρότι κατά τα τελευταία έτη παρατηρείται μία αύξηση της σχετικής συχνότητας. 2. Το σύνδρομο Asperger συνιστά μία διακριτή υποκατηγορία των διαταραχών φάσματος του αυτισμού. Βασική διαφορά είναι το ότι παιδιά με σύνδρομο Asperger ενδεχομένως να παρουσιάζουν φυσιολογικό και υψηλό επίπεδο νοητικών δεξιοτήτων για συγκεκριμένες περιοχές της νοητικής ανάπτυξης. 3. Η πραγματολογική χρήση του λόγου είναι αρκετά περιορισμένη στα παιδιά με σύνδρομο Asperger. Ωστόσο, στις λοιπές πτυχές χρήσης του λόγου τα ελλείμματα των μαθητών με σύνδρομο Asperger είναι σαφώς μικρότερα αυτών των μαθητών με αυτισμό. 4. Οι παρεμβάσεις για την βελτίωση του λόγου και της επικοινωνίας σε μαθητές με διαταραχές του φάσματος του αυτισμού μπορούν να ενταχθούν σε πολλές διαφορετικές κατηγορίες. Οι παρεμβάσεις αυτές έχουν ως κεντρικό τους χαρακτηριστικό το ότι αντιμετωπίζουν από κοινού τα κοινωνικά και γλωσσικά ελλείμματα των μαθητών με αυτισμό. 5. Όσον αφορά τις μελέτες περίπτωσης μαθητών με σύνδρομο Asperger που εξετάστηκαν, αυτές είναι αριθμητικά ιδιαίτερα περιορισμένες. Μια ιδιαίτερα ενδιαφέρουσα τη διαπίστωση αφορά το ότι στο σύνολο των περιπτώσεων αυτών η έκπτωση των επικοινωνιακών δεξιοτήτων δεν είναι απόρροια του ίδιου του συνδρόμου Asperger, αλλά λοιπών συννοσηροτήτων των μαθητών που πάσχουν από αυτό, όπως για παράδειγμα τα ψυχωτικού τύπου συμπτώματα και η νοητική ανεπάρκεια. Επομένως, μπορεί οι μαθητές με σύνδρομο Asperger να έχουν γλωσσικά και επικοινωνιακά ελλείμματα, αλλά, όπως διαπιστώνεται από τις περιπτώσεις που εξετάστηκαν, κάτι τέτοιο δεν φαίνεται να αποδίδει το σύνδρομο Asperger, παρά στις συννοσηρότητες αυτού.
The formation of hot gaseous haloes around galaxies
Creators: name: Correa, Camila A.
name: Schaye, Joop
name: Wyithe, J. Stuart B.
name: Duffy, Alan R.
name: Theuns, Tom
name: Crain, Robert A.
name: Bower, Richard
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use a suite of hydrodynamical cosmological simulations from the Evolution and Assembly of GaLaxies and their Environments (EAGLE) project to investigate the formation of hot hydrostatic haloes and their dependence on feedback mechanisms. We find that the appearance of a strong bimodality in the probability density function (PDF) of the ratio of the radiative cooling and dynamical times for halo gas provides a clear signature of the formation of a hot corona. Haloes of total mass $10^{11.5}-10^{12}{\rm{M}}_{\odot}$ develop a hot corona independent of redshift, at least in the interval $z=0-4$ where the simulation has sufficiently good statistics. We analyse the build up of the hot gas mass in the halo, $M_{\rm{hot}}$, as a function of halo mass and redshift and find that while more energetic galactic winds powered by SNe increases $M_{\rm{hot}}$, AGN feedback reduces it by ejecting gas from the halo. We also study the thermal properties of gas accreting onto haloes and measure the fraction of shock-heated gas as a function of redshift and halo mass. We develop analytic and semianalytic approaches to estimate a `critical halo mass', $M_{\rm{crit}}$, for hot halo formation. We find that the mass for which the heating rate produced by accretion shocks equals the radiative cooling rate, reproduces the mass above which haloes develop a significant hot atmosphere. This yields a mass estimate of $M_{\rm{crit}} \approx 10^{11.7}{\rm{M}}_{\odot}$ at $z=0$, which agrees with the simulation results. The value of $M_{\rm{crit}}$ depends more strongly on the cooling rate than on any of the feedback parameters.
description: 24 pages, 15 figures, accepted for publication in MNRAS. Comments welcome
title: Ubykh1, listeXI
Creators: name: Michailovsky, Boyd
name: Dumézil, Georges
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Ubykh
subject: uby

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Electronic Mach-Zehnder interferometer as a tool to probe fractional statistics
Creators: name: Law, K. T.
name: Feldman, D. E.
name: Gefen, Yuval
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study transport through an electronic Mach-Zehnder interferometer recently devised at the Weizmann Institute. We show that this device can be used to probe statistics of quasiparticles in the fractional quantum Hall regime. We calculate the tunneling current through the interferometer as the function of the Aharonov-Bohm flux, temperature and voltage bias, and demonstrate that its flux-dependent component is strongly sensitive to the statistics of tunneling quasiparticles. More specifically, the flux-dependent and flux-independent contributions to the current are related by a power law, the exponent being a function of the quasiparticle statistics.
description: 22 pages; 8 figures
A criterion for a two-dimensional domain to be Lipschitzian
Creators: name: Rehberg, Joachim
Publisher: name: Weierstrass Institute
Year: 2012
Subjects: subject: Elliptic/parabolic problems
subject: bi-Lipschitzian parametrization
subject: 35A01
subject: 57N40
subject: 57N50

description: We prove that a two-dimensional domain is already Lipschitzian if only its boundary admits locally a one-dimensional, bi-Lipschitzian parametrization.
Communicating foreign cultures : the workings of the culture peg in international reporting and communication
Creators: name: Tanikawa, Miki
Publisher: name: The University of Texas at Austin
Year: 2017
Subjects: Culture peg
Stereotype
Culture
News
International communication

description: Serving as a key concept throughout, “the culture peg,” stereotype-themed content in international news articles in major national newspapers was investigated empirically and theoretically employing quantitative and qualitative methodologies. As operationalized in a content analysis project, this study identified significant amount of such content in three leading news media from three different countries, the United States, the United Kingdom and Japan. The volume of it increased significantly in approximately three decades between 1985 and 2014. Theoretical inquiry in this dissertation identified strong connections between such empirical findings and existing theories in social psychology, cultural studies and communication. The way culture pegs are employed in the news, it was found, is highly consistent with the social identity theory from social psychology, the ritual view of communication from communication studies, use of myth in reporting facts and events and certain conceptualizations of culture from cultural studies. This dissertation concludes that national cultural stereotypes essentially behave like culture does generally – as explicated by cultural scholars – and that stereotypes in the media are effective in attracting audience attention because they resonate through the discursive framework commonly shared by the producers of news and the audiences, both of who possess similar cultural frames.
What does a strongly excited 't Hooft-Polyakov magnetic monopole do?
Creators: name: Fodor, Gyula
name: Rácz, István
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The time evolution of strongly exited SU(2) Bogomolny-Prasad-Sommerfield (BPS) magnetic monopoles in Minkowski spacetime is investigated by means of numerical simulations based on the technique of conformal compactification and on the use of hyperboloidal initial value problem. It is found that an initially static monopole does not radiate the entire energy of the exciting pulse toward future null infinity. Rather, a long-lasting quasi-stable `breathing state' develops in the central region and certain expanding shell structures -- built up by very high frequency oscillations -- are formed in the far away region.
description: 4 pages, 6 figures
Semiconductor mode-locked lasers with coherent dual mode optical injection: Simulations, analysis and experiment
Creators: name: Arkhipov, Rostislav M.
name: Habruseva, Tatiana
name: Pimenov, Alexander
name: Radziunas, Mindaugas
name: Huyet, Guillaume
name: Vladimirov, Andrei G.
Publisher: name: Weierstrass Institute
Year: 2015
Subjects: subject: Passively mode-locked semiconductor lasers
subject: dual frequency optical injection
subject: locking
subject: 42.55.Px
subject: 42.60.Fc
subject: 42.60.Lh

description: Using a delay differential equations model we study the dynamics of a passively mode-locked semiconductor laser with dual frequency coherent optical injection. The locking regions where the laser pulse repetition rate is synchronized to the separation of the two injected frequencies were calculated numerically and measured experimentally. Asymptotic analysis performed in the limit of the small injection field amplitude revealed the dependence of the locking regions on the model parameters, such as optical bandwith, absorber recovery time and linear losses.
Impact of spring-associated riparian vegetation on channel morphology : insights from Henry Mountains, UT
Creators: name: Southard, Paul Johnson
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Channel morphology
Riparian vegetation
Hydraulic geometry
Ephemeral
Dryland
Flow modeling
Channel bed vegetation
Channel bank vegetation
Roughness
Henry Mountains

description: Riparian vegetation is a key control on alluvial channel morphology, but a more quantitative understanding of its morphological impacts must be developed in order to predict channel change in the face of riparian succession and prescribe vegetation as a river management tool. Recent studies have focused on vegetation's role as a bank-strengthening agent that hinders braiding, increases depth and decreases width in perennial streams. However, the tendency of vegetation to grow on the channel bed, in addition to the banks, in ephemeral streams suggests that it may have entirely different morphological impacts. I examined dryland channels draining the Henry Mountains in southern Utah that are intersected by perennial bedrock springs along their length. Spatial variability in water availability from the spring produces high spatial variability in vegetation. As a result, these channels provide a unique opportunity to study how channel morphology responds to changes in vegetation, and to identify the morphological impact of riparian vegetation in channels that accommodate ephemeral streams. I used 1m-resolution Digital Elevation Models and AnuGA flow modeling software to simulate five discharge scenarios for two roughness conditions in three of these channels, and produced high-resolution datasets of channel geometry and spatial vegetation density. I tested the hypotheses that 1) riparian vegetation has a quantifiable impact on channel morphology in ephemeral streams and 2) the morphological impact of riparian vegetation in channels with channel bed vegetation is different from that in channels with channel bank vegetation. I quantitatively showed that, for these ephemeral streams, channel morphology is dependent on vegetation characteristics. In channels with channel bed vegetation, vegetation causes widening and decreases flow velocity. In channels with only channel bank vegetation, vegetation causes narrowing and deepening. By performing comparisons of sparsely- and densely-vegetated reaches within individual channels, I provided the following quantitative constraints on the relative magnitude of riparian vegetation's impact on channel geometry: Reaches with dense channel bank vegetation are approximately 25% narrower and 25% deeper than sparsely-vegetated reaches. Channel bank vegetation causes narrowing by 12-16% and deepening by 7-11% per 0.1 increase in calculated LiDAR Vegetation Index from the unvegetated cross-section channel geometry. Reaches with dense channel bed vegetation are approximately 20-100% wider and 5-30% slower than sparsely-vegetated reaches. Channel bed vegetation causes widening by 13-29% and slowing by 2-7% per 0.1 increase in calculated LiDAR Vegetation Index from the unvegetated cross-section channel geometry.
Resistive switching suppression in metal/Nb:SrTiO$_3$ Schottky contacts prepared by room-temperature Pulsed Laser Deposition
Creators: name: Buzio, Renato
name: Gerbi, Andrea
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Deepening the understanding of interface-type Resistive Switching (RS) in metal/oxide heterojunctions is a key step for the development of high-performance memristors and Schottky rectifiers. In this study, we address the role of metallization technique by fabricating prototypical metal/Nb-doped SrTiO$_3$ (M/NSTO) Schottky contacts via Pulsed Laser Deposition (PLD). Ultrathin Pt and Au electrodes are deposited by PLD onto single-crystal (001)-terminated NSTO substrates and interfacial transport is characterized by conventional macroscale methods and nanoscale Ballistic Electron Emission Microscopy. We show that PLD metallization gives Schottky contacts with highly reversible current-voltage characteristics under cyclic polarization. Room-temperature transport is governed by thermionic emission with Schottky barrier height $ϕ_B$(Pt/NSTO)=0.71-0.75eV, $ϕ_B$(Au/NSTO)=0.70-0.83eV and ideality factors as small as n(Pt/NSTO)=1.1 and n(Au/NSTO)=1.6. RS remains almost completely suppressed upon imposing broad variations of the Nb doping and of the external stimuli (polarization bias, working temperature, ambient air exposure). At the nanoscale, we find that both systems display high spatial homogeneity of $ϕ_B$(<50meV), which is only partially affected by the NSTO mixed termination (|$ϕ_B$ (M/SrO) - $ϕ_B$ (M/TiO$_2$)|<35meV). Experimental evidences and theoretical arguments indicate that the PLD metallization mitigates interfacial layer effects responsible for RS. This occurs thanks either to a reduction of the interfacial layer thickness and to the creation of an effective barrier against the permeation of ambient gas species affecting charge trapping and redox reactions. This description allows to rationalize interfacial aging effects, observed upon several-months-exposure to ambient air, in terms of interfacial re-oxidation.
description: 31 pages, 7 figures
title: Εταιρική ταυτότητα και δημιουργία ηλεκτρονικού εμπορίου "babeebox" το πρώτο δώρο του νεογέννητου μωρού
title: Corporate identity & eshop creation "babeebox" baby's first gift
titleType: AlternativeTitle
Creators: name: Χαμπάκη, Μαρία Ελένη
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Λογότυπο
Εταιρική ταυτότητα
Εφαρμογές λογοτύπου
Έντυπη διαφήμιση
Ηλεκτρονικό εμπόριο
Καταχώριση

description: Στην παρούσα πτυχιακή εργασία, παρουσιάζουμε την εταιρική ταυτότητα και το ηλεκτρονικό εμπόριο (eshop) του “babeebox”, μιας εταιρείας που έχουμε δημιουργήσει. Η εταιρεία αυτή έχει ως αντικείμενο την πώληση του πρώτου δώρου του νεογέννητου μωρού και έπειτα από έρευνα που πραγματοποιήθηκε, παρατηρήσαμε ότι δεν υπάρχει αντίστοιχη στην αγορά. Σκοπός της είναι να αναδειχθεί στο καταναλωτικό κοινό, μέσα από τον γραφιστικό σχεδιασμό και τις αξίες της εταιρείας. Επιπλέον, έχει δημιουργηθεί το λογότυπο και όλη η εταιρική ταυτότητα της εταιρείας και έχουμε προσθέσει εφαρμογές του λογοτύπου για διαφημιστικά προϊόντα της εταιρείας, αλλά και προϊόντα προς πώληση. Αφού πραγματοποιήθηκε έρευνα, θα γίνει και ο σχεδιασμός στην έντυπη διαφήμιση με καταχωρήσεις μέσω περιοδικών. Στη συνέχεια, αναπτύσσεται ένα πρότυπο - εφαρμογή για την ελληνική αγορά και αναλύεται τόσο ο τρόπος λειτουργίας όσο και το γραφιστικό κομμάτι της εφαρμογής. Μέσα από την προσωπική προσέγγιση, με τόλμη και δυναμισμό, θα γίνει προσπάθεια να δώσουμε την αίσθηση της ισορροπίας και της καλαισθησίας για να βγει το επιθυμητό αποτέλεσμα και να εκπληρωθούν όλοι οι στόχοι.
The Pion Mass and Decay Constant at Three Loops in Two-Flavour Chiral Perturbation Theory
Creators: name: Bijnens, Johan
name: Truedsson, Nils Hermansson
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A calculation of the pion mass and decay constant at NNNLO in two-flavour chiral perturbation theory is presented. The results are cross-checked by using both the exponential and square root parameterizations of the Goldstone matrix field, as well as by comparing to the known leading log coefficients of the two quantities. A small numerical study of the quark mass dependence is performed, and for a physical quark mass there is good agreement with lower order results.
description: 17 pages
title: Ubykh1, listeXII
Creators: name: Michailovsky, Boyd
name: Dumézil, Georges
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2011
Subjects: subject: Ubykh
subject: uby

description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
title: ADCO, Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Cart. 32 (G 136), 745 folios, f. 0114
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire

description: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0114, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Neuvième cartulaire de Saint-Étienne de Dijon (1661 - 1684), Archives départementales de la Côte-d'Or, Cart. 32 (G 136), 745 folios, f. 0114, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Radio Frequency Interference Mitigation
Creators: name: An, Tao
name: Chen, Xiao
name: Mohan, P.
name: Lao, Bao-Qiang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Radio astronomy observational facilities are under constant upgradation and development to achieve better capabilities including increasing the time and frequency resolutions of the recorded data, and increasing the receiving and recording bandwidth. As only a limited spectrum resource has been allocated to radio astronomy by the International Telecommunication Union, this results in the radio observational instrumentation being inevitably exposed to undesirable radio frequency interference (RFI) signals which originate mainly from terrestrial human activity and are becoming stronger with time. RFIs degrade the quality of astronomical data and even lead to data loss. The impact of RFIs on scientific outcome is becoming progressively difficult to manage. In this article, we motivate the requirement for RFI mitigation, and review the RFI characteristics, mitigation techniques and strategies. Mitigation strategies adopted at some representative observatories, telescopes and arrays are also introduced. We also discuss and present advantages and shortcomings of the four classes of RFI mitigation strategies, applicable at the connected causal stages: preventive, pre-detection, pre-correlation and post-correlation. The proper identification and flagging of RFI is key to the reduction of data loss and improvement in data quality, and is also the ultimate goal of developing RFI mitigation techniques. This can be achieved through a strategy involving a combination of the discussed techniques in stages. Recent advances in high speed digital signal processing and high performance computing allow for performing RFI excision of large data volumes generated from large telescopes or arrays in both real time and offline modes, aiding the proposed strategy.
description: 26 pages, 10 figures, Chinese version accepted for publication in Acta Astronomica Sinica; English version to appear in Chinese Astronomy and Astrophysics
Resonant excitations of the 't Hooft-Polyakov monopole
Creators: name: Forgacs, Peter
name: Volkov, Mikhail S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spherically symmetric magnetic monopole in an SU(2) gauge theory coupled to a massless Higgs field is shown to possess an infinite number of resonances or quasinormal modes. These modes are eigenfunctions of the isospin 1 perturbation equations with complex eigenvalues, $E_n=ω_n-iγ_n$, satisfying the outgoing radiation condition. For $n\to\infty$, their frequencies $ω_n$ approach the mass of the vector boson, $M_W$, while their lifetimes $1/γ_n$ tend to infinity. The response of the monopole to an arbitrary initial perturbation is largely determined by these resonant modes, whose collective effect leads to the formation of a long living breather-like excitation characterized by pulsations with a frequency approaching $M_W$ and with an amplitude decaying at late times as $t^{-5/6}$.
description: 4 pages