cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The d'Alembert-lagrange principle for gradient theories and boundary conditions
Creators: name: Gouin, Henri
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Motions of continuous media presenting singularities are associated with phenomena involving shocks, interfaces or material surfaces. The equations representing evolutions of these media are irregular through geometrical manifolds. A unique continuous medium is conceptually simpler than several media with surfaces of singularity. To avoid the surfaces of discontinuity in the theory, we transform the model by considering a continuous medium taking intoaccount more complete internal energies expressed in gradient developments associated with the variables of state. Nevertheless, resulting equations of motion are of an higher order than those of the classical models: they lead to non-linear models associated with more complex integration processes on the mathematical level as well as on the numerical point of view. In fact, such models allow a precise study of singular zones when they have a non negligible physical thickness. This is typically the case for capillarity phenomena in fluids or mixtures of fluids in which interfacial zones are transition layers between phases or layers between fluids and solid walls. Within the framework of mechanics for continuous media, we propose to deal with the functional point of view considering globally the equations of the media as well as the boundary conditions associated with these equations. For this aim, we revisit the d'Alembert-Lagrange principle of virtual works which is able to consider the expressions of the works of forces applied to a continuous medium as a linear functional value on a space of test functions in the form of virtual displacements. At the end, we analyze examples corresponding to capillary fluids. This analysis brings us to numerical or asymptotic methods avoiding the difficulties due to singularities in simpler -but with singularities- models.
description: 17 pages
Unification of a Bounce with a Viable Dark Energy Era in Gauss-Bonnet Gravity
Creators: name: Odintsov, S. D.
name: Oikonomou, V. K
name: Fronimos, F. P.
name: Fasoulakos, K. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we shall demonstrate that it is possible to describe in a unified way a primordial bounce with the dark energy era, in the context of Gauss-Bonnet modified gravity. Particularly, the early time bounce has a nearly scale invariant power spectrum of primordial scalar curvature perturbations, while the dark energy era is a viable one, meaning that it mimics the $Λ$-Cold-Dark-Matter model and also is compatible with the Planck 2018 data on cosmological parameters. In addition, our analysis indicates that the dark energy era is free from dark energy oscillations, which occur in the context of $f(R)$ gravity. We further addressed the later issue by examining $f(R)$ extensions of Gauss-Bonnet models, and we showed that the $f(R)$ gravity part of the action actually produces the dark energy oscillations at redshifts $z\sim 4$.
description: PRD accepted
Bs ->mu+ mu- versus Direct Higgs Searches
Creators: name: Kao, Chung
name: Wang, Yili
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the prospects for the discovery of neutral Higgs bosons with muons by direct searches at the CERN Large Hadron Collider (LHC) as well as by indirect searches in the rare decay Bs -> mu+ mu- at the Fermilab Tevatron and the LHC. Promising results have been found for the minimal supersymmetric standard model, the minimal supergravity (mSUGRA) model, and supergravity models with non-universal Higgs masses (NUHM SUGRA). For tanb \simeq 50, we find that (i) the contours for a branching fraction of B(Bs -> mu+ mu-) = 1x10^{-8} in the parameter space are very close to the 5σcontours for pp -> b ϕ^0 -> b mu+ mu- + X, ϕ^0 = h^0, H^0, A^0 at the LHC with an integrated luminosity (L) of 30 fb^{-1},(ii) the regions covered by B(Bs -> mu+ mu-) \ge 5x10^{-9} and the discovery region for bϕ^0 -> b mu+ mu- with 300 fb^{-1} are complementary in the mSUGRA parameter space,(iii) in NUHM SUGRA models, a discovery of B(Bs -> mu+ mu-) \simeq 5x10^{-9} at the LHC will cover regions of the parameter space beyond the direct search for pp -> bϕ^0 -> b mu+ mu- with L = 300 fb^{-1}.
description: To appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 2006
Molecular phylogenetics of Trichonympha cf. collaris and a putative pyrsonymphid: the relevance to the orgin of sex
Creators: name: Dacks, Joel Bryan
Publisher: name: University of British Columbia
Year: 2009

description: Why sex evolved is one of the central questions in evolutionary genetics. To address this question I have undertaken a molecular phylogenetic study of two candidate lineages to determine the first sexual line. In my thesis the hypermastigotes are confirmed as closely related to the trichomonads in the phylum Parabasalia and found to be more deeply divergent than a putative pyrsonymphid. This means that the Parabasalia are the first sexual lineage. From this I go on to infer that the ancestral sexual cycle included facultative sex. The relevance of these inferences is then examined with respect to the current theories on the origin of sex.
Manufactured vulnerability : queer and crip feminist critiques of climate injustices
Creators: name: Olson, Jessica
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Climate justice
Crip theory
Queer theory
Feminist theory
Climate change
Disability studies

description: Queer and disabled people face disproportionate climate impacts and are further marginalized within climate discourse by being primarily represented as “vulnerable.” This thesis argues that this overdependence on vulnerability narrative intensifies these impacts by creating the conditions that lead to their allowance as “expected losses” in climate-related disasters and catastrophes. Significantly, this depoliticization translates into there being a lack of inclusion of disabled people and their knowledge, insights, and practical action to address the differential impacts of climate change. By interrogating common vulnerability narratives, this thesis contends with what vulnerability means and how it functions within climate change rhetoric as an (un)intentional mechanism to excuse inaction, thereby sacrificing the well-being of queer and disabled people. By exploring these existing ambiguities and interrogating the political fora of the United Nations Climate Negotiations and Intergovernmental Panel on Climate Change, this thesis surfaces the need for queer and crip interventions in vulnerability discourse. Further, this thesis argues that in order for feminist climate justice to be achieved, queer and disabled activism must be at the core of contemporary climate action
Additional file 1 of Very broadband strain-rate measurements along a submarine fiber-optic cable off Cape Muroto, Nankai subduction zone, Japan
Creators: name: Ide, Satoshi
name: Araki, Eiichiro
name: Matsumoto, Hiroyuki
Publisher: name: figshare
Year: 2021
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences

description: Additional file 1: Figure S1. Spectrogram at 10 selected channels. This shows periodogram of strain rate calculated for every 5 minutes. Figure S2. Strain rate periodogram for each channel. Normalized for each channel. S2, M2, K1, and O1 show the period of four large tide constituents. (PDF 1889 KB)
Factors influencing health care professionals’ decision-making regarding parental presence during invasive procedures in the PICU
Creators: name: Jefferson, Rosella Veronica
Publisher: name: University of British Columbia
Year: 2009

description: Children admitted to pediatric intensive care units (PICUs) experience invasive and painful procedures as health care professionals intervene to assess, monitor and manage critical health problems. Most of these procedures elicit fear, anxiety and/or pain on the part of children, producing significant effects on them, their parents and health care professionals. Involving parents in the performance of procedures is a practice that has been researched in other care settings; research knowledge regarding the use of such a practice in the PICU is sparse. The purpose of this study was to identify factors influencing health care professionals' decision-making regarding parental presence during invasive procedures on a child in the PICU. Guided by the qualitative method of interpretive description, data was collected from fifteen PICU nurses and physicians interviewed regarding their decision-making. Data analysis was validated, clarified or revised by the study participants to reveal three possible decisions mediated by one of two goals identified by the health care professional for the procedure; in turn the goal and the decisions were influenced by many other mediating and contextual factors identified by participants. These findings contributed to the development of a schematic representation of decision-making that reflects the complexity of decision-making currently and could be used as a structure to further discuss the issue of parental presence during invasive procedures in the PICU. Participants identified that discussion regarding the decisions made and the factors that influenced them is important and that it currently does not occur. Participants identified some influences on their decision-making that are unique from those identified in literature regarding other care settings. Highlights from the findings include: the child's voice is rarely represented; health care professionals frequently circumvent parental involvement in decisions regarding invasive procedures on their child in the PICU in ways perceived as protection, or alternatively as control; and other family-centered care principles, such as forming collaborative partnerships, are not reflected currently in decision-making regarding parental presence during invasive procedures in the PICU. Implications for health care practice, education and research arising from the findings are identified.
Spectral properties of ghost Neumann matrices
Creators: name: Bonora, L.
name: Santos, R. J. Scherer
name: Tolla, D. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue the analysis of the ghost wedge states in the oscillator formalism by studying the spectral properties of the ghost matrices of Neumann coefficients. We show that the traditional spectral representation is not valid for these matrices and propose a new heuristic formula that allows one to reconstruct them from the knowledge of their eigenvalues and eigenvectors. It turns out that additional data, which we call boundary data, are needed in order to actually implement the reconstruction. In particular our result lends support to the conjecture that there exists a ghost three strings vertex with properties parallel to those of the matter three strings vertex.
description: 29 pages
Η γενική αρχή της προστασίας της δικαιολογημένης εμπιστοσύνης του πολίτη έναντι του κράτους
Creators: name: Γκρέκα, Χριστίνα Φωτίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γενική αρχή
Δικαιολογημένη εμπιστοσύνη
Προστασία
Ασφάλεια δικαίου
Διοίκηση
Διοικούμενος
Principle
Legitimate expectation
Protection
Consistency
Administration
Ciuilian-citizen

description: Μία από τις γενικές αρχές του δικαίου που από το φως της νομολογίας του δικαστηρίου των ευρωπαϊκών κοινοτήτων αλλά και αυτής των εθνικών δικαστηρίων έχει αναγνωριστεί ως κανόνας δικαίου με υπερέχουσα ισχύ, είνaι η γενική αρχή της δικαιολογημένης εμπιστοσύνης του πολίτη έναντι του κράτους.Σκοπός της αρχής είναι η προστασία του διοικούμενου από ενδεχόμενο επιζήμιο για τα δικαιώματά του αιφνιδιασμό εξαιτίας της μεταβολής της διοικητικής πρακτικής ή ακόμη και αυτής της ίδια της νομοθεσίας. Η αρχή συνδέεται άμεσα, αλλά δεν ταυτίζεται απολύτως εννοιολογικά με την αρχή του κράτους δικαίου και της χρηστής διοίκησης.Εξετάζεται η πορεία της αρχής στη νομολογία του δικαστηρίου των ευρωπαϊκών κοινοτήτων και στην ελληνική νομολογία με μία σύντομη αναφορά και στη νομολογία των δικαστηρίων των υπόλοιπων κρατών-μελών της Ε.Ε.Τελικά η γενική αρχή θεμελιώνεται στο Σύνταγμα συνδιαλέγεται με τη γενική αρχή της νομιμότητας σε μία διαδικασία στάθμισης και τελικά αναδεικνύεται η αξία της στο σύγχρονο νομικό πολιτισμό.
description: The principle of legitimate expectations has been recognized by the case law of the european court of justice and other national courts or an outstanding rule.Its role is to protect citizens rights against a potential risk that could be caused by changes in administartion authorities practices of even changes in legislation. This principle is related but is not the same as the principle of fair use of authority. European court of justice has developed significant case law on this matter as well as greek and other european courts, using this principle as a rule aiming to protect fundamental human rights
Qualitative properties of Hénon type equations with exponential nonlinearity
Creators: name: Guo, Zongming
name: Huang, Xia
name: Ye, Dong
name: Zhou, Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We are interested in the qualitative properties of solutions of the Hénon type equations with exponential nonlinearity. First, we classify the stable at infinity solutions of $Δu +|x|^αe^u=0$ in $\mathbb{R}^N$, which gives a complete answer to the problem considered in [Wang-Ye]. Secondly, existence and precise asymptotic behaviors of entire radial solutions to $Δ^2 u=|x|^α e^u$ are obtained. Then we classify the stable and stable at infinity radial solutions to $Δ^2 u=|x|^α e^u$ in any dimension.
Big civic energy : social connectedness during the COVID-19 pandemic in Austin, TX
Creators: name: Weatherford, Krista Michelle
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Civic
Civic engagement
COVID-19
Pandemic
Volunteering
Donating
Neighbors
Neighborhoods
Social connectedness
Social capital
Group association

description: The COVID-19 pandemic has revolutionized the way society views many things. Is civic engagement one of them? In the beginning of the pandemic, many individuals were active in their immediate neighborhood, leading many to believe that long-term social change was inevitable. However, the pandemic was a mixed bag in terms of the engagement it inspired. Benefits to the community in response included broader mutual aid, volunteering, mask-making, and food delivery to the elderly. Whereas negative civic impacts included anti-Asian racism, toilet paper hoarding, mass gatherings and antimasking despite restrictions. Ultimately, it is impossible to assess whether the event was wholly good or bad in terms of civic engagement. However, this report examines whether the following forms of civic engagement (referred to as social connectedness) increased in Austin during the pandemic: volunteering, donating, group association, and favors for neighbors. The report also uncovers any spatial disparities between how different populations responded to the pandemic. Academic literature analyzes how neighborhoods can differ in resident formation of social capital, and individual motivations to become civically engaged. Beyond that, a significant amount of literature discusses community formation and mutual aid in response to disruptive events such as natural disasters. This report utilizes mixed methods through a quantitative analysis using the Austin Area Sustainability Indicators, as well as a qualitative approach of interviewing community members and non-profit leaders
Stratified Rotating Boussinesq Equations in Geophysical Fluid Dynamics: Dynamic Bifurcation and Periodic Solutions
Creators: name: Hsia, Chun-Hsiung
name: Ma, Tian
name: Wang, Shouhong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 86A10;35Q35

description: The main objective of this article is to study the dynamics of the stratified rotating Boussinesq equations, which are a basic model in geophysical fluid dynamics. First, for the case where the Prandtl number is greater than one, a complete stability and bifurcation analysis near the first critical Rayleigh number is carried out. Second, for the case where the Prandtl number is smaller than one, the onset of the Hopf bifurcation near the first critical Rayleigh number is established, leading to the existence of nontrivial periodic solutions. The analysis is based on a newly developed bifurcation and stability theory for nonlinear dynamical systems (both finite and infinite dimensional) by two of the authors [16].
Additional file 1 of Escape and absconding among offenders with schizophrenia spectrum disorder – an explorative analysis of characteristics
Creators: name: Kirchebner, Johannes
name: Lau, Steffen
name: Sonnweber, Martina
Publisher: name: figshare
Year: 2021
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 1.
Disc evolution and the relationship between $L_{\rm acc}$ and $L_\ast$ in T Tauri stars
Creators: name: Tilling, I.
name: Clarke, C. J.
name: Pringle, J. E.
name: Tout, C. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the evolution of accretion luminosity $L_{\rm acc}$ and stellar luminosity ${L_\ast}$ in pre-mainsequence stars. We make the assumption that when the star appears as a Class II object, the major phase of accretion is long past, and the accretion disc has entered its asymptotic phase. We use an approximate stellar evolution scheme for accreting pre-mainsequence stars based on Hartmann, Cassen & Kenyon, 1997. We show that the observed range of values $k = L_{\rm acc}/L_\ast$ between 0.01 and 1 can be reproduced if the values of the disc mass fraction $M_{\rm disc}/M_*$ at the start of the T Tauri phase lie in the range 0.01 -- 0.2, independent of stellar mass. We also show that the observed upper bound of $L_{\rm acc} \sim L_\ast$ is a generic feature of such disc accretion. We conclude that as long as the data uniformly fills the region between this upper bound and observational detection thresholds, then the degeneracies between age, mass and accretion history severely limit the use of this data for constraining possible scalings between disc properties and stellar mass.
description: To appear in MNRAS
Thermal fracture as a framework for quasi-static crack propagation
Creators: name: Corson, F.
name: Adda-Bedia, M.
name: Henry, H.
name: Katzav, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We address analytically and numerically the problem of crack path prediction in the model system of a crack propagating under thermal loading. We show that one can explain the instability from a straight to a wavy crack propagation by using only the principle of local symmetry and the Griffith criterion. We then argue that the calculations of the stress intensity factors can be combined with the standard crack propagation criteria to obtain the evolution equation for the crack tip within any loading configuration. The theoretical results of the thermal crack problem agree with the numerical simulations we performed using a phase field model. Moreover, it turns out that the phase-field model allows to clarify the nature of the transition between straight and oscillatory cracks which is shown to be supercritical.
description: 19 pages, 8 figures
Rigorous theory for secondary cosmic-ray ionization
Creators: name: Ivlev, Alexei V.
name: Silsbee, Kedron
name: Padovani, Marco
name: Galli, Daniele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The energy spectrum of electrons produced in molecular gas by interstellar cosmic rays (CRs) is rigorously calculated as a function of gas column density $N$ traversed by the CRs. This allows us to accurately compute the local value of the secondary ionization rate of molecular hydrogen, $ζ_{\rm sec}(N)$, as a function of the local primary ionization rate, $ζ_p(N)$. The ratio $ζ_{\rm sec}/ζ_p$ increases monotonically with $N$, and can considerably exceed the value of $\approx0.67$ commonly adopted in the literature. For sufficiently soft interstellar spectra, the dependence $ζ_{\rm sec}/ζ_p$ versus $N$ is practically insensitive to their particular shape and thus is a general characteristic of the secondary CR ionization in dense gas.
description: Accepted to ApJ
Coverage Fluctuations and Correlations in Nanoparticle-Catalyzed Diffusion-Influenced Bimolecular Reactions
Creators: name: Lin, Yi-Chen
name: Kim, Won Kyu
name: Dzubiella, Joachim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The kinetic processes in nanoparticle-based catalysis are dominated by large fluctuations and spatiotemporal heterogeneities, in particular for diffusion-influenced reactions which are far from equilibrium. Here, we report results from particle-resolved reaction-diffusion simulations of steady-state bimolecular reactions catalyzed on the surface of a single, perfectly spherical nanoparticle. We study various reactant adsorption and diffusion regimes, in particular considering the crowding effects of the reaction products. Our simulations reveal that fluctuations, significant coverage cross-correlations, transient self-poisoning, related domain formation, and excluded-volume effects on the nanoparticle surface lead to a complex kinetic behavior, sensitively tuned by the balance between adsorption affinity, mixed 2D and 3D diffusion, and chemical reaction propensity. The adsorbed products are found to influence the correlations and fluctuations, depending on overall reaction speed, thereby going beyond conventional steric (e.g., Langmuir-like) product inhibition mechanisms. We summarize our findings in a state diagram depicting the nonlinear kinetic regimes by an apparent surface reaction order in dependence of the intrinsic reaction propensity and adsorption strength. Our study using a simple, perfectly spherical, and inert nanocatalyst demonstrates that spatiotemporal heterogeneities are intrinsic to the reaction-diffusion problem and not necessarily caused by any dynamical surface effects from the catalyst (e.g., dynamical surface reconstruction), as often argued.
Виклики ліквідності та платоспроможності українських банків в сучасних реаліях
Creators: name: Чуркіна, Ірина Євгенівна
name: Продан, Тетяна Яківна
Publisher: name: Zenodo
Year: 2023
Subjects: банківська система, платоспроможність, ліквідність, конкурентоспроможність, управління, ризики

description: У статті розглянуто такі економічні категорії, як «платоспроможність» та «ліквідність» українських банків. Актуальність визначається тим, що основним завданням банківського сектора в сучасних умовах постійної економічної і політичної нестабільності є підтримка ліквідності та платоспроможності банківського сектора. Метою статті є  зʼясування значення та ролі платоспроможності українських банків для економіки в умовах глобалізації. Для теоретичної розробки даної проблематики використано методи синтезу, аналізу, збору інформації, узагальнення та інші. В основних результатах дослідження визначено теоретичні аспекти до визначення управління ризиками платоспроможності та ліквідності. Швидке зростання банківських послуг демонструє широкий спектр банківських систем в Україні. Одним з небагатьох факторів, які слід враховувати під час оцінки сили банку, є його платоспроможність. У дослідженні розглянуто тенденції реформування конкурентоспроможності банківського ринку України відповідно до міжнародних стандартів показників платоспроможності. Представлено статистику економічних стандартів у банківській системі України за останні роки. Чим вище коефіцієнт достатності капіталу банку, тим вище рівень непередбачених збитків, які можуть бути покриті до банкрутства. Чим вище ризик для цього кредитного портфеля, тим більше буде потрібно коштів акціонерів. Встановлено, що значення коефіцієнта достатності регулюючого капіталу збільшується протягом періоду дослідження і не завжди опускається нижче нормативних стандартів, рекомендованих регулюючими органами.  Визначено напрями підтримки стабільності українських банків і запропоновано шляхи підвищення капіталізації банківського сектора. Основними з них є постійний аналіз відповідності банків законам про ризики та вимогам управління ризиками. Банкам необхідно розробити конкретну систему діагностичних дій для забезпечення фінансової надійності, яка дозволяє їм регулярно управляти банківськими ризиками. У висновках подано, що оцінка ризику ліквідності та здатності до стабілізації в нестабільному економічному середовищі є одним з основних завдань керівництва банку.
A sharper estimate on the Betti numbers of sets defined by quadratic inequalities
Creators: name: Basu, Saugata
name: Kettner, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 14P10, 14P25

description: In this paper we consider the problem of bounding the Betti numbers, $b_i(S)$, of a semi-algebraic set $S \subset \R^k$ defined by polynomial inequalities $P_1 \geq 0,...,P_s \geq 0$, where $P_i \in \R[X_1,...,X_k]$ and $°(P_i) \leq 2$, for $1 \leq i \leq s$. We prove that for $0\le i\le k-1$, \[ b_i(S) \le{1/2}(\sum_{j=0}^{min\{s,k-i\}}{{s}\choose j}{{k+1}\choose {j}}2^{j}). \] In particular, for $2\le s\le \frac{k}{2}$, we have \[ b_i(S)\le {1/2} 3^{s}{{k+1}\choose {s}} \leq {1/2} (\frac{3e(k+1)}{s})^s. \] This improves the bound of $k^{O(s)}$ proved by Barvinok. This improvement is made possible by a new approach, whereby we first bound the Betti numbers of non-singular complete intersections of complex projective varieties defined by generic quadratic forms, and use this bound to obtain bounds in the real semi-algebraic case.
description: 12 pages, 1 figure, corrected typo
A discontinuous Galerkin method by patch reconstruction for convection-diffusion-reaction problems over polytopic meshes
Creators: name: Yang, Di
name: He, Yinnian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this article, using the weighted discrete least-squares, we propose a patch reconstruction finite element space with only one degree of freedom per element. As the approximation space, it is applied to the discontinuous Galerkin methods with the upwind scheme for the steady-state convection-diffusion-reaction problems over polytopic meshes. The optimal error estimates are provided in both diffusion-dominated and convection-dominated regimes. Furthermore, several numerical experiments are presented to verify the theoretical error estimates, and to well approximate boundary layers and/or internal layers.
description: 45 pages, 15 figures
Δυναμικά περιβάλλοντα προσωποποίησης-υλοποίησης για εκπαιδευτικά sql δεδομένα
Creators: name: Ναλμπάντη, Κωνσταντία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Τηλεκπαίδευση
Προσωποποίηση
Βάσεις δεδομένων
Εκπαιδευτικά περιβάλλοντα
E-learning
Personalization
Databases

description: Στην παρούσα εργασία γίνεται μια αναφορά στα είδη των περιβαλλόντων τηλεκπαίδευσης, στα βασικά χαρακτηριστικά τους και στα πλεονεκτήματα και μειονεκτήματα αυτών.Κύριο αντικείμενο είναι η δημιουργία ενός εργαλείου που θα μπορεί να επικοινωνεί με το επιλεγμένο στο πλαίσιο της εργασίας περιβάλλον τηλεκπαίδευσης Moodle, το οποίο θα συμβάλει στην προσωποποίηση της εκπαίδευσης για τους χρήστες του
description: This master thesis includes a detailed report on the different e-learning environemnets that do exist, o their basic characetristics and on their advantages and disvantages. The basic topic of the master thesis is the implementation of a module that cooperates with the open source e-learning environment moodle and contributes to the personalization of the education for its users
Additional file 1 of A systematic review of evidence-based practice implementation in drug and alcohol settings: applying the consolidated framework for implementation research framework
Creators: name: Louie, Eva
name: Barrett, Emma L.
name: Baillie, Andrew
name: Haber, Paul
name: Morley, Kirsten C.
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. PRISMA Checklist. Checklist of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P).
Interpreting convolutional networks trained on textual data
Creators: name: Marzban, Reza
name: Crick, Christopher John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: There have been many advances in the artificial intelligence field due to the emergence of deep learning. In almost all sub-fields, artificial neural networks have reached or exceeded human-level performance. However, most of the models are not interpretable. As a result, it is hard to trust their decisions, especially in life and death scenarios. In recent years, there has been a movement toward creating explainable artificial intelligence, but most work to date has concentrated on image processing models, as it is easier for humans to perceive visual patterns. There has been little work in other fields like natural language processing. In this paper, we train a convolutional model on textual data and analyze the global logic of the model by studying its filter values. In the end, we find the most important words in our corpus to our models logic and remove the rest (95%). New models trained on just the 5% most important words can achieve the same performance as the original model while reducing training time by more than half. Approaches such as this will help us to understand NLP models, explain their decisions according to their word choices, and improve them by finding blind spots and biases.
description: 9 pages, 6 figures, 5 tables
Additional file 2 of A systematic review of evidence-based practice implementation in drug and alcohol settings: applying the consolidated framework for implementation research framework
Creators: name: Louie, Eva
name: Barrett, Emma L.
name: Baillie, Andrew
name: Haber, Paul
name: Morley, Kirsten C.
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 2. Example Study Search. Details of concepts and search terms used in MEDLINE.
On the new COMPASS measurement of the deuteron spin-dependent structure function $g_1^d$
Creators: name: Wakamatsu, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Very recently, a new measurement of the deuteron spin-dependent structure function $g_1^d (x)$ was reported by the COMPASS group. A main change from the old SMC measurement is a considerable improvement of the statistical accuracy in the low $x$ region $0.004 < x < 0.03$. We point out that the new COMPASS data for $g_1^d (x)$ as well as their QCD fits for $ΔΣ$ and $Δs + Δ\bar{s}$ are all remarkably close to our theoretical predictions given several years ago based on the chiral quark soliton model.
description: Errors in Fig.4 were corrected. Version accepted for publication in Physics Letters B
Supersymmetric inflation and baryogenesis via Extra-Flat directions of the MSSM
Creators: name: McDonald, John
name: Seto, Osamu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One interpretation of proton stability is the existence of extra-flat directions of the MSSM, in particular $u^{c}u^{c}d^{c}e^{c}$ and $QQQL$, where the operators lifting the potential are suppressed by a mass scale $Λ$ which is much larger than the Planck mass, $ Λ\gae 10^{26} \GeV$. Using D-term hybrid inflation as an example, we show that such flat directions can serve as the inflaton in SUSY inflation models. The resulting model is a minimal version of D-term inflation which requires the smallest number of additional fields. In the case where $Q$-balls form from the extra-flat direction condensate after inflation, successful Affleck-Dine baryogenesis is possible if the suppression mass scale is $\gae 10^{31}-10^{35} \GeV$. In this case the reheating temperature from $Q$-ball decay is in the range $3-100 \GeV$, while observable baryon isocurvature perturbations and non-thermal dark matter are possible. In the case of extra-flat directions with a large $t$ squark component, there no $Q$-ball formation and reheating is via conventional condensate decay. In this case the reheating temperature is in the range $1-100 \TeV$, naturally evading thermal gravitino overproduction while allowing sphaleron erasure of any large B-L asymmetry.
description: 20 pages, final version
Εφαρμογή της Μικροεκχύλισης Στερεάς Φάσης με Αέρια Χρωματογραφία για τον Προσδιορισμό Οργανοχλωριωμένων Παρασιτοκτόνων σε Επιφανειακά Ύδατα
Creators: name: Παπανικολάου, Μαρία Στέργιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Μικροεκχύλιση στερεάς φάσης
Οργανοχλωριωμένα παρασιτοκτόνα
Επιφανειακά νερά
Solid phase microextraction (SPME)
Organochlorine pesticides (OCP)
Surface waters

description: Σκοπός της εργασίας ήταν ο έλεγχος και η εποχική διακύμανση των συγκεντρώσεων 22 οργανοχλωριωμένων παρασιτοκτόνων στα επιφανειακά νερά των ποταμών Αξιού, Λουδία και Αλιάκμονα της δυτικής και κεντρικής Μακεδονίας. Η μικροεκχύλιση στερεάς φάσης και η τεχνική της αέριας χρωματογραφίας με ανιχνευτή δέσμευσης ηλεκτρονίων χρησιμοποιήθηκαν για τον προσδιορισμό των ενώσεων. Οι συχνότητες ανίχνευσης των ενώσεων στα δείγματα κυμάνθηκαν μεταξύ 0 και 100%, ενώ οι συγκεντρώσεις τους ανήλθαν μέχρι τα 0.1860 ng/mL. Μόνο η συγκέντρωση της ένωσης Dieldrin ξεπερνούσε τα ποιοτικά όρια που έχει θέσει η ΕΕ. Η εμφάνιση αυτών των ενώσεων στα ελληνικά επιφανειακά ύδατα μπορεί να αποδοθεί στην έντονη γεωργική δραστηριότητα καθώς και στη διασυνοριακή ρύπανση
description: The objective of the study was to monitor the occurrence and the seasonal varations of 22 OCPs in the surface waters of Axios, Loudias and Aliakmon River in westerner and central Macedonia. Solid-phase microextraction (SPME) followed by gas chromatographic techniques with electron-capture detection was used for the determination of the compounds. The frequencies of the compounds detected in the samples varied between 0 and 100%, while the concentrations of individual compounds raise up to 0.1860 ng/mL. Only the concentration of Dieldrin was higher than the qualitative target levels set by the European Union. The occurrence of these compounds in Greek surface waters can be attributed to intense agricultural activity as well as to transboundary pollution.
Scalable $W$-type entanglement resource in neutral-atom arrays with Rydberg-dressed resonant dipole-dipole interaction
Creators: name: Stojanovic, Vladimir M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: While the Rydberg-blockade regime provides the natural setting for creating $W$-type entanglement with cold neutral atoms, it is demonstrated here that a scalable entanglement resource of this type can even be obtained under completely different physical circumstances. To be more precise, a special instance of twisted $W$ states -- namely, $π$-twisted ones -- can be engineered in one-dimensional arrays of cold neutral atoms with Rydberg-dressed resonant dipole-dipole interaction. In particular, it is shown here that this is possible even when a (dressed) Rydberg excitation is coupled to the motional degrees of freedom of atoms in their respective, nearly-harmonic optical-dipole microtraps, which are quantized into dispersionless (zero-dimensional) bosons. For a specially chosen ("sweet-spot") detuning of the off-resonant dressing lasers from the relevant internal atomic transitions, the desired $π$-twisted $W$ state of Rydberg-dressed qubits is the ground state of the effective excitation -- boson Hamiltonian of the system in a broad window of the relevant parameters. Being at the same time separated from the other eigenstates by a gap equal to the single-boson energy, this $W$ state can be prepared using a Rabi-type driving protocol. The corresponding preparation times are independent of the system size and several orders of magnitude shorter than the effective lifetimes of the relevant atomic states.
description: final, published version
Automatic Removal of Cosmic Ray Signatures on Deep Impact CCDs
Creators: name: Ipatov, S. I.
name: A'Hearn, M. F.
name: Klaasen, K. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The results of recognition of cosmic ray (CR) signatures on a single image were analyzed for several codes written by several authors. For most visual images made during low solar activity at exposure time t>4 s, the number of clusters of bright pixels on an image per second per sq. cm of CCD was about 2-4, both for dark and normal sky images. At high solar activity, it sometimes exceeded 10. The ratio of the number of CR signatures consisting of 'n' pixels obtained at high solar activity to that at low solar activity was greater for greater 'n'. The number of clusters detected as CR signatures on a single infrared image is by at least a factor of several greater than the actual number of CR signatures; the number of clusters based on analysis of two successive dark frames is in agreement with an expected number of CR signatures. Some glitches of false CR signatures include bright pixels presented on different infrared images. Our interactive code allows one to delete long CR signatures and prevents removal of false CR signatures near the edge of a comet.
description: Paper submitted to the journal "Advances in Space Research" (Proceedings of COSPAR-2006)
Chicano Folklore Through a Magical Realist Lens: the Case of Rudolfo Anaya's Fiction
Creators: name: Χρυσοπούλου, Μακρίνα Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Λαογραφία
Μαγικός Ρεαλισμός
Μεξικανοαμερικανική Παράδοση-Πολιτισμός- Λογοτεχνία
Ρουντόλφο Ανάγια
Folklore
Magical Realism
Chicano Culture-Literature
Rudolfo Anaya

description: Ο Ρ. Ανάγια είναι ένας Μεξικανοαμερικανός συγγραφέας που εμπνεύστηκε και δημιούργησε τα έργα του κατά τη διάρκεια του Μεξικανοαμερικανικού Κινήματος στο δεύτερο μισό του 20ου αιώνα. Επειδή χρησιμοποιεί λαογραφικά στοιχεία από την παράδοση του λαού του και τα παρουσιάζει μέσα από ένα μεταφυσικό πρίσμα, πολλοί κριτικοί της εποχής τον κατηγόρησαν για αδιαφορία απέναντι στην αγωνία και τον κοινωνικό αγώνα του λαού του. Παρόλα αυτά, η παρούσα διατριβή επιχειρεί να αποδείξει ότι τέτοιου είδους κατηγορίες δεν ευσταθούν, αφού ο συγγραφέας κάθε άλλο παρά κοινωνικά αδιάφορος είναι. Αναλύοντας τα δύο πρώτα μυθιστορήματά του , θα προσπαθήσω να δείξω ότι μέσα από την μεταφυσική παρουσίαση των λαογραφικών στοιχείων της παράδοσής του (τεχνική του μαγικού ρεαλισμού) ο Ανάγια επιδιώκει να εκφράσει το όραμά του για την έκβαση των αγώνων του λαού του. Συγκεκριμένα υποστηρίζει την διαλεκτική συνύπαρξη των αλληλοσυγκρουόμενων στοιχείων της πραγματικότητας των Μεξ/νων ως το πρώτο βήμα για την ανάπλαση μιας υγιούς ομαδικής και προσωπικής ταυτότητας που θα έχει ως συνέπεια την επίτευξη κοινωνικοπολιτικών αλλαγών.
description: Rudolfo Anaya is a late 20th century Chicano author. Writing during a period of sociopolitical upheaval for his people he has been often accused of indifference towards their struggles. Based on his extensive use of Chicano folklore, some critics dismissed his writings as politically irrelevant, devoid of any historical reference whatsoever. My case is that such accusations are highly unjust. Anaya makes use of Chicano tradition and values, reconstructing them in a way that imparts a lesson for his people’s present and future. Constructing folklore through the narrative mode of magical realism, (a mode that allows for the reconciliation of opposites) Anaya preaches for a dialectical coexistence of the contradictory forces in Chicano reality as the antidote to Chicano identity quest and the first step to a social change process. I attempt to prove my case by exploring his first two novels, Bless Me, Ultima(1971) and Heart of Aztlán (1976).
Performance of the UVIT Level-2 Pipeline
Creators: name: Ghosh, S. K.
name: Tandon, S. N.
name: Joseph, P.
name: Devaraj, A.
name: Shelat, D. S.
name: Stalin, C. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Performance of the Level-2 pipeline, which translates the UVIT data created by the ISRO's ground segment processing systems (Level-1) into astronomer ready scientific data products, is described. This pipeline has evolved significantly from experiences during the in orbit mission. With time, the detector modules of UVIT developed certain defects which led to occasional corruption of imaging and timing data. This article will describe the improvements and mitigation plans incorporated in the pipeline and report its efficacy and quantify the performance.
description: Accepted for publication in Journal of Astrophysics & Astronomy, 6 pages, 4 figures
Long-Term X-Ray monitoring of NGC6251: Evidence for a jet-dominated radio galaxy
Creators: name: Gliozzi, M.
name: Papadakis, I. E.
name: Sambruna, R. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first X-ray monitoring observations of the X-ray bright FRI radio galaxy NGC6251 observed with RXTE for 1 year. The primary goal of this study is to shed light on the origin of the X-rays, by investigating the spectral variability with model-independent methods coupled with time-resolved and flux-selected spectroscopy. The main results can be summarized as follows: 1) Throughout the monitoring campaign, NGC6251 was in relatively high-flux state. 2) The flux persistently changed with fluctuations of the order of ~2 on time scales of 20-30 days. 3) When the hardness ratio is plotted against the average count rate, there is evidence for a spectral hardening as the source brightens; this finding is confirmed by a flux-selected spectral analysis. 4) The fractional variability appears to be more pronounced in the hard energy band (5-12 keV) than in the soft one (2.5-5 keV). 5) 2-month averaged and flux-limited energy spectra are adequately fitted by a power law. A Fe Kalpha line is never statistically required, although the presence of a strong iron line cannot be ruled out, due to the high upper limits on the line equivalent width. The inconsistency of the spectral variability behavior of NGC6251 with the typical trend observed in Seyfert galaxies and the similarity with blazars lead support to a jet-dominated scenario during the RXTE monitoring campaign. However, a possible contribution from a disk-corona system cannot be ruled out.
description: 13 pages, 8 figures, 2 tables, accepted for publication in ApJ
Taking off the rose colored glasses: exploring women’s experiences with depression
Creators: name: Scott, Melanie
Publisher: name: University of British Columbia
Year: 2009

description: This study explores the experiences of women, between the ages of twenty-five and fortyfour, who describe themselves as being depressed. Research, to this point, has largely concentrated on investigating the possible causes and predictors of depression in women, using quantitative methodology, The purpose of this research is to create a new discourse by conducting qualitative research utilizing feminist principles. This approach gives voice to women and validates their experiences. Unstructured interviews, which elicited rich information, were conducted with six women who volunteered for this study. Their stories were audio taped and then analyzed utilizing the constant comparative method. Three themes emerged from the analysis: 1) Losing the Self, 2) Searching for Meaning and 3) Regaining the Self. Losing the Self captures the essence of the women's experiences as they talked about the physical and emotional changes they went through, and the feelings these changes gave rise to. Searching for Meaning describes the importance the women attached to making sense of their experiences, and was both internal and external as they looked at issues around control and understanding, and trying to find out who they were. Regaining the Self describes the women's healing journey as they discusses what they needed, whom they needed it from and how, and the importance of education around depression and women's issues. The results indicate that while there are commonalities, each women's experience with and understanding of depression is unique, which stresses the importance of all women being able to give voice to their own experiences and to have them validated.
Additional file 2 of Genomic analysis reveals independent evolution of Plasmodium falciparum populations in Ethiopia
Creators: name: Deriba Abera
name: Kibet, Caleb K.
name: Teshome Degefa
name: Amenga-Etego, Lucas
name: Bargul, Joel L.
name: Golassa, Lemu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S1. Distribution of the number of SNPs across all analyzed genes and their respective SNPs type distribution. Figure S2. Minor allele frequency distribution by population. SNPs are binned into 10 equal sizes of 0.05. In all parasite populations, there is an overabundance of low-frequency SNPs (MAF
MIDDLE TRIASSIC BRACHIOPODS FROM VAL PARINA, BERGAMASC ALPS, ITALY
Creators: name: TORTI, VALENTINA
name: ANGIOLINI, LUCIA
Publisher: name: Università degli Studi di Milano
Year: 1997

description: The Middle Triassic Esino Limestone of Val Parina yields a rich brachiopod fauna associated with bivalves, gastropods, corals, and ammonoids. The brachiopod fauna of the Esino Limestone includes ubiquitous species (P. fragilis, A. aff. posterior, M. mentzeli, D. cf. dinarica, L. praepunctata and A. angustaeformis), species exclusive to the back reef (T. cf. intervallata, A. aff. ladina and A. aff. raxana) and species exclusive to the shelf margin (C. aff. altaplecta, V. vivida, A. aff. dilatata, H. aff. ambitiosa, T. trigonella, M. ampla, A. aff. canaliculata). The age of the Val Parina brachiopods spans from latest Anisian to Late Ladinian.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 103, No 2