cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
f(R) gravity theories in Palatini formalism: cosmological dynamics and observational constraints
Creators: name: Fay, Stephane
name: Tavakol, Reza
name: Tsujikawa, Shinji
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We make a systematic study of the cosmological dynamics for a number of f(R) gravity theories in Palatini formalism. We find a number of interesting results: (i) models based on theories of the type (a) f(R)=R-beta R^n and (b) f(R)=R+alpha ln R -beta, unlike the metric formalism, are capable of producing the sequence of radiation-dominated, matter-dominated and de-Sitter periods, and (ii) models based on theories of the type (c) f(R)=R+alpha R^m -beta R^n can produce early as well as late accelerating phases. However for the classes of models considered here, we have been unable to find the sequence of all four dynamical epochs required to account for the complete cosmological dynamics, even though three out of four phases are possible. We also place observational constraints on these models using the recently released supernovae data (SNLS) as well as the baryon acoustic oscillation peak and the CMB shift parameter. The best-fit values are found to be n=0.027, alpha=4.63 for the models based on (a) and alpha=0.11, beta=4.62 for the models based on (b), neither of which are significantly preferred over the LCDM model. The models based on (c) are also consistent with the data with suitable choices of their parameters.
description: 20 pages, 8 figures
Investigating the nature of narrow-line Seyfert 1 galaxies with high-energy spectral complexity
Creators: name: Gallo, L. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) With the commissioning of XMM came the discovery of 2.5-10 keV spectral complexity in some narrow-line Seyfert 1 galaxies (NLS1). In this work, we define two samples of NLS1: a complex sample whose members exhibit high-energy complexity (C-sample), and a general sample of NLS1 whose 2.5-10 keV spectra do not strongly deviate from a simple power law (S-sample). Considering historical light curves of each object we find that the C-sample is representative of NLS1 in a low X-ray flux state, whereas the members of the S-sample appear to be in a typical flux state. Moreover, from measurements of alpha_ox with contemporaneous UV/X-ray data, we find that the C-sample of NLS1 appear X-ray weaker at the time of the observation. For two NLS1 in the C-sample multi-epoch measurements of alpha_ox are available and suggest that alpha_ox approaches more normal values as the complexity between 2.5-10 keV diminishes. This implies that a source could transit from one sample to the other as its X-ray flux varies. Secondly, there are indications that the C-sample sources, on average, exhibit stronger optical FeII emission, with the three most extreme (FeII/H_beta > 1.8) FeII emitters all displaying complexity in the 2.5-10 keV band. However, it is not clear if the possible connection between FeII strength and spectral complexity is due to the FeII producing mechanism or because strong FeII emitters may exhibit the greatest variability and consequently more likely to be caught in an extreme (low) flux state. Based on the current analysis it we can not straightforwardly dismiss absorption or reflection as the cause of the X-ray complexity.
description: 8 pages, 3 figures. Accepted for publication in MNRAS
Several combinatorial identities derived from series expansions of powers of arcsine
Creators: name: Qi, Feng
name: Chen, Chao-Ping
name: Lim, Dongkyu
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: Primary 05A10, 11B65, Secondary 05A15, 11B83, 26A09, 41A58

description: In the paper, with the aid of the series expansions of the square or cubic of the arcsine function, the authors establish several possibly new combinatorial identities containing the ratio of two central binomial coefficients which are related to the Catalan numbers in combinatorial number theory.
description: 9 pages
Compatibility of CAST search with axion-like interpretation of PVLAS results
Creators: name: Masso, Eduard
name: Redondo, Javier
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The PVLAS collaboration has results that may be interpreted in terms of a light axion-like particle, while the CAST collaboration has not found any signal of such particles. We propose a particle physics model with paraphotons and with a low energy scale in which this apparent inconsistency is circumvented.
description: 10 pages, 3 figures, version accepted for publication in Physical Review Letters
title: How much is enough? Estimating minimum sample size to attain precision levels required in on-board sampling
Creators: name: Prista, Nuno
name: Jardim, Ernesto
name: Azevedo, Manuela
Publisher: name: ASC 2013 - Theme session J
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author. Accurate and precise estimation of discards is a major objective of data collection programs throughout the world. Discard reduction is also a major topic of the new Common Fisheries Policy (CFP) and the future Data Collection Multi-Annual Programme (DC-MAP). Using data from the Portuguese on-board observer programme that samples two otter trawl fisheries in ICES Division IXa, we compare two different approaches for estimating the sampling effort required to attain 'assessment grade' discard estimates: a model-based approach (exponential-decay models) and a probability-based approach (based on classic sampling theory). We show that both approaches attain comparable sample size estimates and that the sample size required to attain precision objectives varies across species and across fisheries being likely influenced by discard motifs. We demonstrate that sampling levels at least two fold higher than the present sampling levels would be required to attain the precision levels set in the current Data Collection Framework (DCF). We discuss the implications of these results in light of the future ability of European onboard sampling programs to detect, e.g., progressive reductions in discard levels.
Twisted and folded Auslander-Reiten quivers and applications to the representation theory of quantum affine algebras
Creators: name: Oh, Se-jin
name: Suh, Uhi Rinn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this paper, we introduce twisted and folded AR-quivers of type $A_{2n+1}$, $D_{n+1}$, $E_6$ and $D_4$ associated to (triply) twisted Coxeter elements. Using the quivers of type $A_{2n+1}$ and $D_{n+1}$, we describe the denominator formulas and Dorey's rule for quantum affine algebras $U'_q(B^{(1)}_{n+1})$ and $U'_q(C^{(1)}_{n})$, which are important information of representation theory of quantum affine algebras. More precisely, we can read the denominator formulas for $U'_q(B^{(1)}_{n+1})$ (resp. $U'_q(C^{(1)}_{n})$) using certain statistics on any folded AR-quiver of type $A_{2n+1}$ (resp. $D_{n+1}$) and Dorey's rule for $U'_q(B^{(1)}_{n+1})$ (resp. $U'_q(C^{(1)}_{n})$) applying the notion of minimal pairs in a twisted AR-quiver. By adopting the same arguments, we propose the conjectural denominator formulas and Dorey's rule for $U'_q(F^{(1)}_{4})$ and $U'_q(G^{(1)}_{2})$.
description: This is a megred version of arXiv:1606.00076 and arXiv:1606.00102. This version is published in Journal of Algebra. We upload this for reder's convenience
Bethe ansatz and Isomonodromic deformations
Creators: name: Talalaev, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We study symmetries of the Bethe equations for the Gaudin model appeared naturally in the framework of the geometric Langlands correspondence under the name of Hecke operators and under the name of Schlesinger transformations in the theory of isomonodromic deformations, and particularly in the theory of Painlevé transcendents.
description: 14 pages, extended version of the talk given at CQIS-2008, the hypothesis proved
Gauge Symmetries on $θ$-Deformed Spaces
Creators: name: Banerjee, Rabin
name: Samanta, Saurav
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A Hamiltonian formulation of gauge symmetries on noncommutative ($θ$ deformed) spaces is discussed. Both cases- star deformed gauge transformation with normal coproduct and undeformed gauge transformation with twisted coproduct- are considered. While the structure of the gauge generator is identical in either case, there is a difference in the computation of the graded Poisson brackets that yield the gauge transformations. Our analysis provides a novel interpretation of the twisted coproduct for gauge transformations.
description: LaTex, 20 pages, no figures
Quantum dissipation theory of slow magnetic relaxation mediated by domain-wall motion in one-dimensional chain compound [Mn(hfac)_{2}BNO_{H}}]
Creators: name: Ovchinnikov, A. S.
name: Bostrem, I. G.
name: Sinitsyn, V. E.
name: Boyarchenkov, A. S.
name: Baranov, N. V.
name: Inoue, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based on a quantum dissipation theory of open systems, we present a theoretical study of slow dynamics of magnetization for the ordered state of the new molecule-based magnetic complex [Mn(hfac)_{2}BNO_{H}] composed from antiferromagnetically coupled ferrimagnetic (5/2,1) spin chains. Experimental investigations of the magnetization process in pulsed fields have shown that this compound exhibits a metamagnetic AF-FI transition at a critical field in the order of the interchain coupling. A strong frequency dependence for the ac-susceptibility has been revealed in the vicinity of the AF-FI transition and was associated with an AF-FI interface kink motion. We model these processes by a field-driven domain-wall motion along the field-unfavorable chains correlated with a dissipation effect due to a magnetic system-bath coupling. The calculated longitudinal magnetization has a two-step relaxation after the field is switched off and are found in good agreement with the experiment. The relaxation time determined from the imaginary part of the model ac-susceptibility agrees qualitatively with that found from the remanent magnetization data.
title: Going Back in Time: Reconstruction of Discard Time Series From a Portuguese Fishery
Creators: name: Prista, Nuno
name: Silva, Cristina
name: Azevedo, Manuela
name: Fernandes, Ana Cláudia
Publisher: name: ASC 2013 - Theme session J
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author. Discard estimation is a major topic of the European Fisheries Data Collection Framework. Through time, national sampling programs have evolved from ad hoc sampling designs focused on the precise estimation of single species to probability-based sampling designs focused on accurate estimation of a wide array of species. In Portugal, an onboard sampling programme routinely collects samples from the whole catch of several fisheries but sampling design and sampling effort allocation were originally aimed at the estimation of European hake discards. In our study, we analyze data from the Portuguese bottom otter trawl fishery that targets crustaceans in ICES Division IXa (years 2004-2012) and check it for biases that could hamper the estimation of discards from other species, such as Norway lobster, deepwater rose shrimp and blue whiting. We start by identifying the major spatial and temporal factors that drive catches of the different species in this fishery. We then test a set of raising algorithms in the estimation of landings from this fishery and use them to build time series of discards. We show that spatiotemporal biases in sampling design and sampling effort allocation may severely impact final estimates obtained for some non-target species but that these may be attenuated by a careful consideration of raising algorithms and combinations of estimates at the time of estimation.
Doped Spin Ladder: Zhang-Rice Singlets or Rung-centred Holes?
Creators: name: Wohlfeld, Krzysztof
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We formulate charge transfer model for a single doped spin ladder, relevant for the intrinsically doped plane of coupled spin ladders in Sr$_{3}$Ca$_{11}$Cu$_{24}$O$_{41}$. Assuming the presence of the experimentally observed charge order in the system we solve the model using Hartree-Fock approximation. Our results show the profound stability of the Zhang-Rice singlets with respect to other configurations of doped holes, in agreement with recent x-ray absorption measurements.
description: 5 pages, 3 figures; to appear in: Lectures on the Physics of Highly Correlated Electron Systems XI, AIP (2007)
Purely orbital diamagnetic to paramagnetic fluctuation of quasi two-dimensional carriers under in-plane magnetic field
Creators: name: Simserides, Constantinos
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An external magnetic field, $H$, applied parallel to a quasi two-dimensional system modifies quantitatively and qualitatively the density of states. Using a self-consistent numerical approach, we study how this affects the entropy, $S$, the free energy, $F$, and the magnetization, $M$, for different sheet carrier concentrations, $N_s$. As a prototype system we employ III-V double quantum wells. We find that although $M$ is mainly in the opposite direction of $H$, the system is not linear. Surprisingly $\partial M / \partial H$ swings between negative and positive values, i.e., we predict an entirely orbital diamagnetic to paramagnetic fluctuation. This phenomenon is important compared to the ideal de Haas-van Alphen effect i.e. the corresponding phenomenon under perpendicular magnetic field.
description: 4 pages, 6 figures
Design and implementation of an expressive query interface/language for image database
Creators: name: Faulus, Dwifiandika S.
Publisher: name: University of British Columbia
Year: 2009

description: One key component in providing effective image data management support is an expressive query language/interface. The query languages and interfaces of existing image database systems are quite adequate for image databases where the images are different. However, for many applications, such as remote-sensing and medicine, where the images are similar, most of the existing languages are restrictive since tools are not provided for the users to express subtle differences that may exist between the images that the users want and hundreds of images that are similar. The goal of this thesis is to provide a more expressive query language/interface that can accomodate querying image database for such applications. Toward this goal, we have proposed the concept of range specifications to queries. A range specification allows the user's ambiguities in specifying various visual image features for the query to be captured and incorporated to the similarity matching process. The result of a query is typically n images I₁,….,In that are the closest matches to the query. The reformulation language supported by existing systems is typically in the form of "like-this" query (e.g., Ii) that would return n closest matches to 74-. We have proposed 'like-this-in-what' reformulation language which allows the user to express not only 'like-this' query, but also specific aspects that the user wants to include or exclude. More formally, 'like-this-in-what' reformulation language allows not only queries of the form but also of the more general form: (Ii – 8i- ßi) + (Ii, - 8i +ßi) + ••• Last but not least, we have designed and implemented a prototype query language/interface called EXQUISI ( Expressive Query Interface and language for .Similar /mages) which incorporates the above concepts. In Exquisi, we give examples how range specifications can be incorporated into the image features by introducing query features which include color range, color gradient, texture set, and location box. We also shows how 'like-this-in-what' reformulation can be incorporated in Exquisi so as to minimize the cost of reformulating the query and to maximize the expressiveness of the query reformulation.
Long Term Evolution of Close Planets Including the Effects of Secular Interactions
Creators: name: Adams, Fred C.
name: Laughlin, Gregory
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper studies the long term evolution of planetary systems containing short-period planets, including the effects of tidal circularization, secular excitation of eccentricity by companion planets, and stellar damping. For planetary systems subject to all of these effects, analytic solutions (or approximations) are presented for the time evolution of the semi-major axes and eccentricities. Secular interactions enhance the inward migration and accretion of hot Jupiters, while general relativity tends to act in opposition by reducing the effectiveness of the secular perturbations. The analytic solutions presented herein allow us to understand these effects over a wide range of parameter space and to isolate the effects of general relativity in these planetary systems.
description: 14 pages, 2 figures, accepted to ApJ
Οι Γενικοί Όροι Συναλλαγών στις συμβάσεις διανομής: ιδίως στη σύμβαση εμπορικής αντιπροσωπείας, στη σύμβαση αποκλειστικής διανομής προϊόντων και στη σύμβαση δικαιόχρησης
Creators: name: Μανωλούδη, Γαλήνη Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Γενικοί όροι συναλλαγών (Γ.Ο.Σ.)
Συμβάσεις διανομής
άρθρο 2 ν. 2251/1994
General Terms and Conditions (G.T.C.)
Distribution contracts
article 2 l. 2251/1994

description: Σκοπός της διατριβής ήταν η μελέτη των Γενικών Όρων Συναλλαγών (Γ.Ο.Σ.) στις συμβάσεις διανομής και ειδικότερα στο πλαίσιο της σύμβασης εμπορικής αντιπροσωπείας, της σύμβασης αποκλειστικής διανομής προϊόντων και της σύμβασης δικαιόχρησης. Αρχικά, αναλύσαμε το φαινόμενο των Γ.Ο.Σ. στα πλαίσια του ιδιωτικού δικαίου δίνοντας περισσότερο έμφαση στα βασικά τους χαρακτηριστικά, στη νομική τους φύση καθώς και στη νομοθετική τους κατοχύρωση (άρθρο 2 του Ν. 2251/1994 όπως τροποποιήθηκε από το άρθρο 2 του Ν. 3587/2007). Στη συνέχεια παρουσιάσαμε τα τρία στάδια ελέγχου των Γ.Ο.Σ., τα οποία συνίστανται στην ένταξη των Γ.Ο.Σ. στη σύμβαση, στην ερμηνεία των Γ.Ο.Σ. και τέλος στον δικαστικό έλεγχο των Γ.Ο.Σ. Κατόπιν, αναφερθήκαμε αναλυτικά στους Γ.Ο.Σ. που εμφανίζονται στις συμβάσεις διανομής. Ειδικότερα, ασχοληθήκαμε με τους Γ.Ο.Σ. στη σύμβαση εμπορικής αντιπροσωπείας, στη σύμβαση αποκλειστικής διανομής προϊόντων και στη σύμβαση δικαιόχρησης κάνοντας ενδελεχή αναφορά στις κατ’ ιδίαν ρήτρες που συναντάμε στις ως άνω αναφερόμενες συμβάσεις.
description: The aim of the present thesis was the study of General Terms and Conditions (G.T.C) in distribution contracts and especially in commercial agency, exclusive distribution agreement of products and franchising. Initially analyzed the effect of G.T.C. under private law giving more emphasis on their basic characteristics, in their nature and in their legislative vesting (article 2of law 2251/1994 as amended by article 2 of law 3587/2007). Then, we presented the three control stages of G.T.C., consisting in the integration of G.T.C. in contract, the interpretation of G.T.C. and finally the judicial review of G.T.C. Furthermore, we elaborated on G.T.C. that are shown in distribution contracts. In particular, we focused on G.T.C. in the commercial agency, the exclusive distribution agreement of products and the franchising making a thorough reference to the specific terms found in the above mentioned contracts.
ECPR Survivor Estimates: A Simulation-Based Approach to Comparing ECPR Delivery Strategies
Creators: name: Kruit, Natalie
name: Song, Changle
name: Tian, David
name: Moylan, Emily
name: Dennis, Mark
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Cell Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Science Policy

description: Objective: The number of out-of-hospital cardiac arrest (OHCA) patients who may benefit from prehospital extracorporeal cardiopulmonary resuscitation (ECPR) is yet to be elucidated. Patient eligibility is determined both by case characteristics and physical proximity to an ECPR service. We applied accessibility principles to historical cardiac arrest data, to identify the number of patients who would have been eligible for prehospital ECPR in Sydney, Australia, and the potential survival benefit had prehospital ECPR been available. Methods: The New South Wales cardiac arrest registry between January 2017 to June 2021 included 39,387 cardiac arrests. We retrospectively defined two groups: 1) possible ECPR eligible arrests that would have triggered activation of a team, and 2) ECPR eligible arrests, those arrests that met ECPR inclusion criteria and remained refractory. Transport accessibility modeling was used to ascertain the number of arrests that would have been served by a hypothetical prehospital service and the potential survival benefit. Results: There were 699 arrests screened as possibly ECPR eligible in the Sydney metropolitan area, 488 of whom were subsequently confirmed as ECPR eligible refractory OHCA. Of these, 38% (n = 185) received intra-arrest transfer to hospital, with 37% (n = 180) arriving within 60 min. Using spatial and transport modeling, a prehospital team located at an optimal location could establish 437 (90%) patients onto ECMO within 60 min, with an estimated survival of 48% (IQR 38–57). Based on existing survival curves, compared to conventional CPR, an optimally located prehospital ECPR service has the potential to save one additional life for every 3.0 patients. Conclusions: A significant number of historical OHCA patients could have benefited from prehospital ECPR, with a potential survival benefit above conventional CPR.
Detecting complex multiplication
Creators: name: Achter, Jeff
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We give an efficient, deterministic algorithm to decide if two abelian varieties over a number field are isogenous. From this, we derive an algorithm to compute the endomorphism ring of an elliptic curve over a number field.
Decoupled photoelectrochemical water splitting system for centralized hydrogen production
Creators: name: Landman, Avigail
name: Halabi, Rawan
name: Dias, Paula
name: Dotan, Hen
name: Mehlmann, Alexander
name: Shter, Gennady E.
name: Halabi, Manar
name: Naserladeen, Omayer
name: Mendes, Adélio
name: Grader, Gideon S.
name: Rothschild, Avner
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Photoelectrochemical (PEC) water splitting offers an elegant approach for solar energy conversion into hydrogen fuel. Large-scale hydrogen production requires stable and efficient photoelectrodes and scalable PEC cells that are fitted for safe and cost-effective operation. One of the greatest challenges is the collection of hydrogen gas from millions of PEC cells distributed in the solar field. In this work, a separate-cell PEC system with decoupled hydrogen and oxygen cells was designed for centralized hydrogen production, using 100 cm2 hematite (a-Fe2O3) photoanodes and nickel hydroxide (Ni(OH)2) / oxyhydroxide (NiOOH) electrodes as redox mediators. The operating conditions of the system components and their configuration were optimized for daily cycles, and ten 8.3 h cycles were carried out under solar simulated illumination without additional bias at an average short-circuit current of 55.2 mA. These results demonstrate successful operation of a decoupled PEC water splitting system with separate hydrogen and oxygen cells.
Manifestation of deformation and nonlocality in $α$ and cluster decay
Creators: name: Rojas-Gamboa, D. F.
name: Velasquez, J. E. Perez
name: Kelkar, N. G.
name: Upadhyay, N. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is common to study the strong decay of a heavy nucleus as a tunneling phenomenon where the $α$ ($^4$He) or a light nuclear cluster tunnels through the Coulomb barrier formed by its interaction with the heavier daughter nucleus. The position and width of the Coulomb barrier are determined by the total interaction potential between the two daughter nuclei. We examine the effects of including nonlocality and deformation in the interaction potential by calculating the half-lives, $t_{1/2}$, and thereby phenomenological preformation factors of several nuclei which have the possibility of decaying by emitting either an $α$ or a light nuclear cluster. The effect of deformation manifests itself by a decrease in $t_{1/2}$ for all the decays studied. The effect of nonlocality is studied within two different models of the nuclear potential: the energy-independent but angular momentum ($l$) dependent Mumbai (M) potential and the energy-dependent Perey-Buck (PB) potential. The nonlocal nuclear interaction leads to a decrease in all half-lives studied. Though the decrease is larger due to the Perey-Buck potential, half-lives evaluated using the Mumbai potential show a strong sensitivity to the $l$ value in the decay. This feature of the $α$ and cluster decay half-lives can provide a complementary tool in addition to scattering data which are more commonly used to fix the parameters of a nonlocal potential in literature.
description: 19 pages, 5 figures
The Association of Combined Prehospital Hypotension and Hypoxia with Outcomes following Out-of-Hospital Cardiac Arrest Resuscitation
Creators: name: Smida, Tanner
name: Menegazzi, James J.
name: Crowe, Remle P.
name: Salcido, David D.
name: Martin, P.S.
name: Scheidler, James
name: Bardes, James
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Cancer

description: Prehospital post-resuscitation hypotension and hypoxia have been associated with adverse outcomes in the context of out-of-hospital cardiac arrest (OHCA). We aimed to investigate the association between clinical outcomes and post-resuscitation hypoxia alone, hypotension alone, and combined hypoxia and hypotension. We used the 2018–2021 ESO annual datasets to conduct this study. All EMS-treated non-traumatic OHCA patients who had a documented prehospital return of spontaneous circulation (ROSC) and two or more SpO2 readings and systolic blood pressures recorded were evaluated for inclusion. Patients who were less than 18 years of age, pregnant, had a do-not-resuscitate order or similar, achieved ROSC after bystander CPR only, or had an EMS-witnessed cardiac arrest were excluded. Multivariable logistic regression adjusted for standard Utstein factors and highest prehospital Glasgow Coma Scale (GCS) score was used to investigate the association between hypoxia, hypotension, and outcomes. We analyzed data for 17,943 patients, of whom 3,979 had hospital disposition data. Hypotension and hypoxia were not documented in 1,343 (33.8%) patients, 1,144 (28.8%) had only hypoxia documented, 507 (12.7%) had only hypotension documented, and 985 (24.8%) had both hypoxia and hypotension documented. In comparison to patients who did not have documented hypotension or hypoxia, patients who had documented hypoxia (aOR: 1.76 [1.38, 2.24]), documented hypotension (aOR: 3.00 [2.15, 4.18]), and documented hypoxia and hypotension combined (aOR: 4.87 [3.63, 6.53]) had significantly increased mortality. The relationship between mortality and vital sign abnormalities (hypoxia and hypotension > hypotension > hypoxia) was observed in every evaluated subgroup. In this large dataset, hypotension and hypoxia were independently associated with mortality both alone and in combination. Compared to patients without documented hypotension and hypoxia, patients with documented hypotension and hypoxia had nearly five-fold greater odds of mortality.
Παθητική και Συνειδητή ιδεολογία στην παιδική πολυπολιτισμική λογοτεχνία
Creators: name: Καρασαββίδου, Γεωργία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Πολυπολιτισμική λογοτεχνία
Παθητική ιδεολογία
Συνειδητή ιδεολογία
Διδακτισμός
Πολιτισμική εικονολογία
Αποδοχή του Αλλου
Εικόνα του Αλλου
Στερεοτυπικές εκφράσεις
Εθνικά στερεότυπα
Multicultural literature
Implicit ideology
Explicit ideology
Didacticism
Cultural Iconology
Acceptance of the Other
Image of the Other
Stereotypical expressions
National Stereotypes

description: Η υπόθεση της έρευνάς μας είναι ότι η παιδική πολυπολιτισμική λογοτεχνία της περιόδου 2004-2010, που απευθύνεται σε παιδιά μεσαίας σχολικής ηλικίας (9-11), περιέχει άμεσα διδακτικά μηνύματα και στοιχεία παθητικής ιδεολογίας, τα οποία δεν προάγουν ή τουλάχιστον αποδυναμώνουν την ιδεολογική της στόχευση που είναι η αποδοχή του Άλλου από το παιδί-αναγνώστη. Κινούμενοι στο γενικό θεωρητικό πλαίσιο της πολιτισμικής εικονολογίας, επιλέξαμε συγκεκριμένα θεματικά πεδία και αφηγηματικά στοιχεία που είναι φορείς ιδεολογίας και, βασισμένοι σε αυτά, ορίσαμε τα ερωτήματα της έρευνάς μας και καταγράψαμε κατόπιν τα λογοτεχνικά αποσπάσματα που δίνουν τις σχετικές απαντήσεις. Στη συνέχεια ομαδοποιήσαμε τα αποτελέσματά μας, απομονώσαμε τα στοιχεία που δεν προάγουν την αποδοχή του Άλλου από τον αναγνώστη και μελετήσαμε τη συχνότητα εμφάνισής τους στα παιδικά βιβλία ώστε να διατυπώσουμε τα τελικά μας συμπεράσματα. Βασισμένοι τέλος, στους θεωρητικούς της λογοτεχνίας, προσπαθήσαμε να ορίσουμε το πλαίσιο της «αυθεντικής» παιδικής πολυπολιτισμικής λογοτεχνίας.
description: Our research hypothesis is that children's multicultural literature of the period 2004-2010 for ages 9-11, contains didactic messages and elements of implicit ideology, which do not promote its ideological target, meaning the acceptance of the Other from the child-reader. Under the general theoretical framework of cultural iconology we have chosen specific themes and narrative elements which are vectors of ideology and, based on them, we defined our research questions and recorded the literary passages that provide their answers. We proceeded by grouping the results, isolating the elements that do not promote the acceptance of the Other from the reader and studying the frequency of their appearance in children's books, in order to make our final conclusions. Finally, based on the literary theorists, we tried to define the context of "authentic" multicultural children’s literature.
description: Συνεργαζόμενα Τμήματα Πανεπιστήμιο Λε Μαν (Γαλλία)
[Rezension von: Tupputi, Emanuele, L'Indagine pregiudiziale o pastorale alla luce del m.p. Mitis Iudex Dominus Iesus: applicazioni nelle diocesi della Puglia]
Creators: name: Giannelli, Vito
Publisher: name: Apulia Theologica
Year: 2025

description: Apulia Theologica, V. 7 N. 2 (2021): Apulia theologica vol. 7, fascicolo 2
COMPUTER GRAPHICS IN TECHNICAL DISCIPLINES
Creators: name: Bozorov, Akmal
name: Shoyqulov, Shodmonkul
Publisher: name: Zenodo
Year: 2024

description: The article discusses the role of computer graphics in technical disciplines, its application in engineering, architecture, mechanical engineering and electronics. Computer graphics provides tools for creating accurate 2D and 3D models, simulations and data analysis, which can significantly improve the design and development processes. The article analyzes modern software solutions such as AutoCAD, SolidWorks, MATLAB and Blender, which are widely used for modeling and visualization of complex systems. Particular attention is paid to the trends in the development of computer graphics, including the introduction of virtual and augmented reality technologies, artificial intelligence and cloud computing, which open up new prospects for the use of graphic technologies in technical sciences.
Planar distribution of the galaxies in the Local Group: a statistical and dynamical analysis
Creators: name: Pasetto, Stefano
name: Chiosi, Cesare
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Adopting known data on positions and distances, we make use of the analytical geometry and look for the plane that minimizes the distances of all galaxies to it. A planar distribution is indeed found that, however, does not coincide with the plane found by Sawa & Fujimoto 2005. Why? The second part of this study is devoted to answer this question and to find a dynamical justification for the planar distribution. To this aim, we apply the Hamilton Method (Minimum Action) to investigate the dynamics of the two major system of the Local Group, Milky Way and Andromeda, under the action of external forces exerted by nearby galaxies or groups external to the Local Group. We find that the planar istribution is fully compatible with the minimum action and that the external force field is likely parallel to the plane. It pulls the galaxies of the Local Group without altering their planar distribution. Special care is paid to evaluate the robustness of this result. Conclusion: in this paper we have examined the spatial distribution of galaxies in the Local Group. They are confined to a plane that can be statistically and dynamically understood as the result of the Minimum Action. The planar distribution seems to be stable for a large fraction of the Hubble time. The external force field, that has likely been constant over the same time interval, does not alter the planar distribution as it is nearly parallel to it. Effects due to undetected halos of sole Dark Matter are briefly discussed. They could be a point of uncertainty of the present study.
description: 22 pages, 15 figures, accepted in A&A
Bombieri-Vinogradov Type Theorem for Sparse Sets of Moduli
Creators: name: Baier, Stephan
name: Zhao, Liangyi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B25, 11L20, 11L40, 11N05, 11N14, 11N32, 11N35, 11N36

description: In this paper, we establish theorems of Bombieri-Vinogradov type and Barban-Davenport-Halberstam type for sparse sets of moduli. As an application, we prove that there exist infinitely many primes of the form $p=am^2+1$ such that $a\leq p^{5/9+ε}$.
description: 11 Pages
title: Practical implementation of design based catch sampling: the Scottish experience
Creators: name: Pout, Alastair
name: Clarke, Liz
Publisher: name: ASC 2013 - Theme session J
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author. The adoption of probability based sampling designs for fisheries data collection both at national and regional level, many would argue, is long overdue. Statistically sound catch estimates are critical to the stock assessment models required to inform fisheries management, upon which the health and long-term viability of fish and shellfish stocks depends. Here we take an overview of the implementation of design based sampling from a Scottish perspective, focussing on key steps, lessons learnt and the remaining challenges.
Physics-informed Gaussian Process for Online Optimization of Particle Accelerators
Creators: name: Hanuka, Adi
name: Huang, X.
name: Shtalenkova, J.
name: Kennedy, D.
name: Edelen, A.
name: Lalchand, V. R.
name: Ratner, D.
name: Duris, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (cs.LG)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: High-dimensional optimization is a critical challenge for operating large-scale scientific facilities. We apply a physics-informed Gaussian process (GP) optimizer to tune a complex system by conducting efficient global search. Typical GP models learn from past observations to make predictions, but this reduces their applicability to new systems where archive data is not available. Instead, here we use a fast approximate model from physics simulations to design the GP model. The GP is then employed to make inferences from sequential online observations in order to optimize the system. Simulation and experimental studies were carried out to demonstrate the method for online control of a storage ring. We show that the physics-informed GP outperforms current routinely used online optimizers in terms of convergence speed, and robustness on this task. The ability to inform the machine-learning model with physics may have wide applications in science.
Η περιοδική επιμόρφωση των εκπαιδευτικών: ιστορικο-συγκριτική μελέτη σε τρεις χώρες
Creators: name: Γαλογαύρου, Δάφνη Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Περιοδική Επιμόρφωση εκπαιδευτικών
Αμειβόμενη εκπαιδευτική άδεια
Περιοδική Εκπαίδευση
Recurrent teacher’s in service training
Paid educational leave of absence
Recurrent Education

description: Σκοπός της εργασίας ήταν η διαχρονική και συγκριτική προσέγγιση της παρεχόμενης περιοδικής επιμόρφωσης των εκπαιδευτικών, των τελευταίων τριάντα ετών, στην Ελλάδα, την Αγγλία και τη Σουηδία. Στο πρώτο μέρος της εργασίας, επιχειρήθηκε η οριοθέτηση του περιεχομένου της περιοδικής εκπαίδευσης, που αποτέλεσε και τη βάση ανάπτυξης της περιοδικής επιμόρφωσης των εκπαιδευτικών. Ιδιαίτερη αναφορά έγινε στο ζήτημα της αμειβόμενης εκπαιδευτικής άδειας, ως βασική προϋπόθεση για την ανάπτυξη ενός συστήματος περιοδικής εκπαίδευσης. Στη συνέχεια, οριοθετήθηκε το περιεχόμενο της περιοδικής επιμόρφωσης των εκπαιδευτικών και εξετάστηκε η σύνδεσή της με την επαγγελματική ανάπτυξή τους. Στο δεύτερο μέρος της εργασίας, περιγράφηκαν με χρονολογική σειρά, τα δεδομένα που αφορούν στην εξέλιξη του θεσμικού πλαισίου της περιοδικής επιμόρφωσης στις τρεις υπό εξέταση χώρες. Συγκεκριμένα, συγκεντρώθηκαν, ταξινομήθηκαν και καταγράφηκαν τα προγράμματα περιοδικής επιμόρφωσης από επίσημους φορείς, στους υπηρετούντες εκπαιδευτικούς στη δημόσια εκπαίδευση στις χώρες αυτές. Στη συνέχεια, αντιπαρατέθηκαν τα παραπάνω δεδομένα, με βάση τέσσερις κύριους συγκριτικούς άξονες: τις μορφές των προσφερόμενων προγραμμάτων, τους φορείς, τη θεσμική οργάνωση και το περιεχόμενο αυτών. Έπειτα, διατυπώθηκαν υποθέσεις, οι οποίες ελέγχθηκαν με βάση τη σύγκριση των στοιχείων, για να οδηγηθούμε τέλος στα συμπεράσματα, τα οποία καταγράφονται στο τέλος της εργασίας.
description: The aim of the present thesis was the diachronic and comparative approach of teacher’s recurrent in service training, in the last thirty years in Greece, England and Sweden. In the first part of the thesis, we examined the content of recurrent education, which constituted the base of growth of teacher’s recurrent in service training, pointing out the issue of paid educational leave of absence, as the basic assumption for the existence of a system of recurrent education. Then, we examined the content of teacher’s recurrent in service training and its connection with the professional development of teachers. In the second part of the thesis, we consider data related to the development of institutional frame of teacher’s recurrent in service training, in the three under review countries. These data were described with chronological order. Concretely, the official programs of teacher’s recurrent in service training were assembled, classified and recorded. Afterwards, the data above were juxtaposed using four criteria of comparability: the forms of the programs, the providers, the institutional organisation and their content. Then, we formulated hypotheses which were checked by comparing the data, in order to draw the conclusions of this thesis.
15 Mathematical Scenes to Uncover the Prime Number Mystery
Creators: name: Costa, Alvaro
Publisher: name: Zenodo
Year: 2025
Subjects: Prime Numbers
Riemann Hypothesis
Spectral Structure
Prime Duality
Number Theory
Hermitian Matrix
Zeta Function
Numerical Oscillations

description: The text presented here is a fictional dialogue between giants of mathematics aimed at provoking reflection.It is not a new conjecture, hypothesis, or theory, but rather the acknowledgment of a mathematical fact that becomes obvious and self-evident once pointed out.

Only the prime numbers up to x/2 are necessary and sufficient to compose or structure all composite numbers up to x, with x > 3.This is undeniable. It is pure arithmetic that reveals the duality of primes.

The dramatized text plays with the possibility that Gauss, who proposed π(x) as a teenager, already knew this but considered it too trivial to warrant any comment.

However, the duality of primes naturally provokes oscillations around x/2, and, as if by magic—no, by logic—immediately collapses the RH when this duality is understood.By Riemann’s own explicit formula, it becomes evident that any zero out of place would violate this primal duality, which is absurd.

But simple truths like this are not easy to accept. They are ignored, rejected, and ridiculed.Look at what happened with the discovery of the square root of 2.

I am neither a mathematician nor a physicist, just an economist with some expertise in data science who has seen too much.The dramatized text seemed to me the best way to communicate this observation to a broader audience.The play is accompanied by a more formal and didactic text with all the computational evidence presented (Zenodo DOI), as well as a link to an open GitHub repository (GitHub Link) for those who wish to replicate the observations.

Finally, an open request:If you listen to the primes and what they have to say, help me spread this truth throughout the academic community.Truth, once revealed, cannot be ignored.I kindly ask for your collaboration and endorsement to help publish the didactic text on arXiv.

The primes thank you!

(costaalv + alumni.usp.br)
Emergence of typical entanglement in two-party random processes
Creators: name: Dahlsten, O. C. O.
name: Oliveira, R.
name: Plenio, M. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the entanglement within a system undergoing a random, local process. We find that there is initially a phase of very fast generation and spread of entanglement. At the end of this phase the entanglement is typically maximal. In previous work we proved that the maximal entanglement is reached to a fixed arbitrary accuracy within $O(N^3)$ steps, where $N$ is the total number of qubits. Here we provide a detailed and more pedagogical proof. We demonstrate that one can use the so-called stabilizer gates to simulate this process efficiently on a classical computer. Furthermore, we discuss three ways of identifying the transition from the phase of rapid spread of entanglement to the stationary phase: (i) the time when saturation of the maximal entanglement is achieved, (ii) the cut-off moment, when the entanglement probability distribution is practically stationary, and (iii) the moment block entanglement scales exhibits volume scaling. We furthermore investigate the mixed state and multipartite setting. Numerically we find that classical and quantum correlations appear to behave similarly and that there is a well-behaved phase-space flow of entanglement properties towards an equilibrium, We describe how the emergence of typical entanglement can be used to create a much simpler tripartite entanglement description. The results form a bridge between certain abstract results concerning typical (also known as generic) entanglement relative to an unbiased distribution on pure states and the more physical picture of distributions emerging from random local interactions.
description: 32 pages, 11 figures
Localized waves carrying orbital angular momentum in optical fibers
Creators: name: Ruano, Paula Nuño
name: Robson, Charles W.
name: Ornigotti, Marco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We consider the effect of orbital angular momentum (OAM) on localized waves in optical fibers using theory and numerical simulations, focusing on splash pulses and focus wave modes. For splash pulses, our results show that they may carry OAM only up to a certain maximal value. We also examine how one can optically excite these OAM-carrying modes, and discuss potential applications in communications, sensing, and signal filtering.
Near-real-time implementation of multiple light source optical flow
Creators: name: Siegerist, Cristina Elena
Publisher: name: University of British Columbia
Year: 2009

description: Multiple light source optical flow is a method to compute a dense, local representation of optical flow. The basic idea is to overcome the aperture problem using multiple images of a moving object acquired simultaneously under different conditions of illumination. Each image provides one linear constraint equation. When the optical flow and the 2D motion field coincide these equations are in the same unknowns. Two equations are enough to calculate both velocity componentss. Three or more images over-determine the system, allowing the calculation of confidence measures and making the computation more robust. This thesis presents a parallel, near-real-time implementation of multiple light source optical flow. Three light sources, one red, one green, and one blue, with negligible overlap in the visible spectrum illuminate the work place from different directions. Three separate black and white images corresponding to the three light sources are acquired simultaneously through a 3 CCD 24 bit RGB camera. The processing is done using a network of six independent processors. The encoded optical flow is displayed on a video monitor. For an image of size 240x240 pixels the processing rate is 4 frames/sec. The range of linear behaviour of the system was studied. A comparison with other methods on a synthetic and a real image sequence is presented.
Long-Range Order in Electronic Transport through Disordered Metal Films
Creators: name: Aigner, S.
name: Della Pietra, L.
name: Japha, Y.
name: Entin-Wohlman, O.
name: David, T.
name: Salem, R.
name: Folman, R.
name: Schmiedmayer, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ultracold atom magnetic field microscopy enables the probing of current flow patterns in planar structures with unprecedented sensitivity. In polycrystalline metal (gold) films we observe long-range correlations forming organized patterns oriented at +/- 45 deg relative to the mean current flow, even at room temperature and at length scales orders of magnitude larger than the diffusion length or the grain size. The preference to form patterns at these angles is a direct consequence of universal scattering properties at defects. The observed amplitude of the current direction fluctuations scales inversely to that expected from the relative thickness variations, the grain size and the defect concentration, all determined independently by standard methods. This indicates that ultracold atom magnetometry enables new insight into the interplay between disorder and transport.