cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Acoustofluidic phase microscopy in a tilted segmentation-free configuration
Creators: name: Morales, Julián Mejía
name: Hammarström, Björn
name: Lippi, Gian Luca
name: Vassalli, Massimo
name: Glynne-Jones, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: A low-cost device for registration-free quantitative phase microscopy (QPM) based on the transport of intensity equation (TIE) of cells in continuous flow is presented. The method uses acoustic focusing to align cells into a single plane where all cells move at a constant speed. The acoustic focusing plane is tilted with respect to the microscope's focal plane in order to obtain cell images at multiple focal positions. As the cells are displaced at constant speed, phase maps can be generated without the need to segment and register individual objects. The proposed inclined geometry allows for the acquisition of a vertical stack without the need for any moving part, and it enables a cost-effective and robust implementation of QPM. The suitability of the solution for biological imaging is tested on blood samples, demonstrating the ability to recover the phase map of single red blood cells flowing through the microchip.
Con l’ammoniaca, all’origine dei giganti gassosi
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2023

Sfruttando la sensibilità del Jwst, un team di ricercatori ha rilevato, nell'atmosfera di una nana bruna, varianti della molecola di ammoniaca che differiscono solo per la composizione isotopica: una porta l'azoto-14, l'altra l'azoto-15. Secondo quanto riportato su Nature, il rapporto di abbondanza delle varianti è un nuovo strumento che aiuterà a discriminare tra i diversi meccanismi di formazione dei giganti gassosi
Entanglement Entropy in Critical Phenomena and Analogue Models of Quantum Gravity
Creators: name: Fursaev, Dmitri V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A general geometrical structure of the entanglement entropy for spatial partition of a relativistic QFT system is established by using methods of the effective gravity action and the spectral geometry. A special attention is payed to the subleading terms in the entropy in different dimensions and to behaviour in different states. It is conjectured, on the base of relation between the entropy and the action, that in a fundamental theory the ground state entanglement entropy per unit area equals $1/(4G_N)$, where $G_N$ is the Newton constant in the low-energy gravity sector of the theory. The conjecture opens a new avenue in analogue gravity models. For instance, in higher dimensional condensed matter systems, which near a critical point are described by relativistic QFT's, the entanglement entropy density defines an effective gravitational coupling. By studying the properties of this constant one can get new insights in quantum gravity phenomena, such as the universality of the low-energy physics, the renormalization group behavior of $G_N$, the statistical meaning of the Bekenstein-Hawking entropy.
description: 13 pages, published version, minor changes in the abstract, new references
Euclid nell’universo delle meraviglie
Creators: Claudia Mignone
Publisher: name: Media Inaf
Year: 2023

Mostrano stelle e galassie mai viste prima, le prime immagini scientifiche del telescopio spaziale Euclid, fornendo un banco di prova per studi che spaziano su molteplici campi dell'astrofisica, dalla formazione stellare nelle galassie nane alle code mareali degli ammassi globulari. Alla guida dei team che analizzeranno queste osservazioni, anche Leslie Hunt e Davide Massari dell'Istituto nazionale di astrofisica
D-branes in non-critical superstrings and duality in N=1 gauge theories with flavor
Creators: name: Murthy, Sameer
name: Troost, Jan
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study D-branes in the superstring background R^{3,1} \times SL(2,R)_{k=1}/U(1) which are extended in the cigar direction. Some of these branes are new. The branes realize flavor in the four dimensional N=1 gauge theories on the D-branes localized at the tip of the cigar. We study the analytic properties of the boundary conformal field theories on these branes with respect to their defining parameter and find non-trivial monodromies in this parameter. Through this approach, we gain a better understanding of the brane set-ups in ten dimensions involving wrapped NS5-branes. As one application, using the boundary conformal field theory description of the electric and magnetic D-branes, we can understand electric-magnetic (Seiberg) duality in N=1 SQCD microscopically in a string theoretic context.
description: 38 pages, harvmac; v2 improved discussion in sections 4 and 8, reference added
Generalized unimodular gravity as a form of k-essence
Creators: name: Barvinsky, A. O.
name: Kolganov, N.
name: Vikman, A.
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: We consider modifications of general relativity characterized by a special noncovariant constraint on metric coefficients, which effectively generates a perfect-fluid type of matter stress tensor in Einstein equations. Such class of modified gravity models includes recently suggested generalized unimodular gravity (GUMG) theory and its simplest version -- unimodular gravity (UMG). We make these gravity models covariant by introducing four Stueckelberg fields and show that in the case of generalized unimodular gravity three out of these fields dynamically decouple. This means that the covariant form of generalized unimodular gravity is dynamically equivalent to k-essence theory with a specific Lagrangian which can be reconstructed from the parameters of GUMG theory. We provide the examples, where such reconstruction can be done explicitly, and briefly discuss theories beyond GUMG, related to self-gravitating media models. Also we compare GUMG k-inflation with cuscuton models of dynamically inert k-essence field and discuss motivation for GUMG coming from effective field theory.
description: 15 pages, 1 figure
Femina Academica: donne leader nell'università che cambia
Creators: name: Spanò, Emanuela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: La tesi è articolata in quattro capitoli. Nel primo sono state concettualizzate le politiche dell'HE come 'discorsi', individuando tre diversi livelli di analisi. Nel secondo capitolo, sono state interpretate le 24 interviste raccolte da donne leader nell'università inglese e italiana, i due contesti messi a confronto, come forme particolari di tecnologie del sé. Nel terzo capitolo, sono stati tracciati i percorsi di carriera delle donne leader intervistate mettendo in luce i dilemmi e le strategie di conciliazione trovate. Infine, nell'ultimo capitolo sono stati identificati nelle narrazioni raccolte miti e metafore nati dall'incrocio tra la dimensione del genere e quella della leadership.
Two Populations of Carbon-Enhanced Metal-Poor Stars in the Disk System of the Milky Way
Creators: name: Dietz, Sarah E.
name: Yoon, Jinmi
name: Beers, Timothy C.
name: Placco, Vinicius
name: Lee, Young Sun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a chemo-dynamical analysis of low-resolution ($R \sim 1300$) spectroscopy of stars from the AAOmega Evolution of Galactic Structure (AEGIS) survey, focusing on two key populations of carbon-enhanced metal-poor (CEMP) stars within the disk system of the Milky Way: a mildly prograde population ($L_z < 1000\,$kpc$\,$km$\,$s$^{-1}$) and a strongly prograde ($L_z > 1000\,$kpc$\,$km$\,$s$^{-1}$) population. Based on their chemical and kinematic characteristics, and on comparisons with similar populations found in the recent literature, we tentatively associate the former with an ex-situ inner-halo population originating from either the $Gaia$ Sausage or $Gaia$-Enceladus. The latter population is linked to the metal-weak thick-disk (MWTD). We discuss their implications in the context of the formation history of the Milky Way.
description: 9 pages, 2 figures
Generalized weiszfeld algorithms for lq optimization
Creators: name: Aftab, Khurrum
Publisher: name: The Australian National University
Year: 2015

description: In many computer vision applications, a desired model of some type is computed by minimizing a cost function based on several measurements. Typically, one may compute the model that minimizes the L2 cost, that is the sum of squares of measurement errors with respect to the model. The simplicity of L2 methods is well appreciated, but they suffer from a drawback when it comes to robustness against outliers; even a single outlier may change the L2 solution drastically. This thesis is primarily focused on the development of simple and robust Lq optimization methods, for q ranging from 1 to 2 (excluding 2), for problems in the area of computer vision. The proposed Lq optimization methods minimize the sum of the q-th power of errors and give more robust results than least squares methods in the presence of outliers. We particularly consider two classes of problems: Firstly, Lq-closest-point problems, where we seek a point for which the sum of the q-th power of distances from a given set of measurements is the minimum. Secondly, Lq non-linear parameter estimation problems, where parameters of a model are estimated by minimizing the sum of the q-th power of distances to a given set of points. The proposed Lq-closest-point algorithms are inspired by the Weiszfeld algorithm, a classic algorithm for finding the L1 mean of a set of points in a Euclidean space. The proposed Lq-closest-point algorithms inherit all the properties of the Weiszfeld algorithm, such as provable convergence to the global Lq minimum, analytical updates, simple to understand and easy to code. We specifically propose the following algorithms: First of all, we propose a generalization of the Weiszfeld algorithm to find the Lq mean of a set of points in a Euclidean space. We refer to this as the Lq Weiszfeld algorithm. We then propose a generalization of the Lq Weiszfeld algorithm to find the Lq mean of a set of points on a Riemannian manifold of non-negative sectional curvature and apply it to rotation averaging and Symmetric Positive-Definite matrices averaging problems. In addition to the proof of convergence, we relax the bounds on maximum distance between points on manifold to ensure convergence. Furthermore, we propose a generalization of the Lq Weiszfeld algorithm to find the Lq-closest-point to a set of affine subspaces, possibly of different dimensions, in a Euclidean space and apply it to the triangulation problem. In addition to the closest-point problems, we propose an algorithm to find an Lq solution of a non-linear parameter estimation problem, specifically the bundle adjustment problem. An advantage of the proposed algorithm is that an efficient least squares optimization method, namely the Levenberg-Marquardt method, is used to find a robust solution to the problem, even an Lq solution. In all the cases, our experimental results confirm the fact that in the presence of outliers the proposed Lq algorithms give superior results than least squares algorithms.
Le determinanti dello sviluppo della banda larga: analisi dei comuni italiani
Creators: name: Moccia, Sara
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: L'obiettivo della presente ricerca è quello di indagare sulle determinanti dello sviluppo della banda larga, identificando le variabili che ne influenzano il processo di penetrazione da parte delle famiglie nei comuni italiani. L'analisi si prefigge, altresì, l'obiettivo di valutare l'impatto delle variabili e, presumibilmente, prospettare le policy più efficaci da adottare. Il lavoro si sviluppa sostanzialmente in tre parti. La prima affronta in maniera approfondita i principali aspetti tecnici inerenti il mondo delle telecomunicazioni al fine di derivarne una comprensione esaustiva del lavoro di ricerca. La seconda parte è incentrata su una revisione della letteratura in cui si analizzano i numerosi studi empirici che hanno indagato sulle determinanti della diffusione della banda larga sia dal lato della domanda, sia dal lato dell'offerta. La terza parte, infine, sviluppa un'analisi econometrica con due specificazioni di modelli.  Tali modelli, pur essendo entrambi orientati all' identificazione delle principali determinanti della penetrazione broadband tra le famiglie italiane a livello comunale, rispondono a due differenti specifiche finalità. Il primo è orientato alla verifica di quanto sia effettivamente efficace l'apertura delle centrali locali al fine di incrementare la penetrazione di banda larga tra le famiglie italiane nei diversi comuni e se, quindi, sono necessarie politiche interventiste per l'apertura delle centrali o meno. Il secondo, invece, è orientato alla verifica di quanto la varietà dell'offerta sia necessaria ai fini della penetrazione della banda larga nei comuni italiani.
Indagando su V1298 Tau, come Sherlock Holmes
Creators: Redazione Asi
Publisher: name: Media Inaf
Year: 2023

Situato a circa 350 anni luce da noi, nella costellazione del Toro, il sistema planetario V1298 Tau potrebbe contenere – o aver contenuto in passato – un quinto pianeta massivo a sufficienza da strappare gli altri quattro dalla loro condizione risonante. È la conclusione di uno studio guidato da scienziati dell’Inaf e dell’Asi pubblicato oggi su Astronomy & Astrophysics
Progenitors of Type IIb Supernovae: II. Observable Properties
Creators: name: Sravan, Niharika
name: Marchant, Pablo
name: Kalogera, Vassiliki
name: Milisavljevic, Dan
name: Margutti, Raffaella
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Type IIb supernovae (SNe IIb) present a unique opportunity for investigating the evolutionary channels and mechanisms governing the evolution of stripped-envelope SN progenitors due to a variety of observational constraints available. Comparison of these constraints with the full distribution of theoretical properties not only help ascertain the prevalence of observed properties in nature, but can also reveal currently unobserved populations. In this follow-up paper, we use the large grid of models presented in Sravan et al. 2019 to derive distributions of single and binary SNe IIb progenitor properties and compare them to constraints from three independent observational probes: multi-band SN light-curves, direct progenitor detections, and X-ray/radio observations. Consistent with previous work, we find that while current observations exclude single stars as SN IIb progenitors, SN IIb progenitors in binaries can account for them. We also find that the distributions indicate the existence of an unobserved dominant population of binary SNe IIb at low metallicity that arise due to mass transfer initiated on the Hertzsprung Gap. In particular, our models indicate the existence of a group of highly stripped (envelope mass ~0.1-0.2 M_sun) progenitors that are compact (<50 R_sun) and blue (T_eff
description: Resubmitted to the Astrophysical Journal after incorporating suggestions from the referee
Quasi-Hamiltonian quotients as disjoint unions of symplectic manifolds
Creators: name: Schaffhauser, Florent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D20

description: We show that the quotient associated to a quasi-Hamiltonian space has a symplectic structure even when 1 is not a regular value of the momentum map: it is a disjoint union of symplectic manifolds of possibly different dimensions, which generalizes a result of Alekseev, Malkin and Meinrenken. We illustrate this theorem with the example of representation spaces of surface groups. As an intermediary step, we show that the isotropy submanifolds of a quasi-Hamiltonian space are quasi-Hamiltonian spaces themselves.
Il design istituzionale del regolatore delle telecomunicazioni e la performance dell'industria
Creators: name: Leonardi, Alessia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: La ricerca analizza il design istituzionale delle autorità di regolamentazione del settore delle telecomunicazioni con l'intento di verificare l'impatto che queste hanno esercitato sull'industria rispetto agli obiettivi istituzionali ad esse attribuiti.
La governance è esaminata attraverso l'elaborazione di una base dati e l'applicazione di metodi fattoriali utili a far emergere le dimensioni rilevanti del design. Da questa sono derivate delle variabili regolamentari successivamente impiegate per verificare l'efficacia dell'azione dell'autorità.
Le variabili ottenute sono utilizzate per stimare e verificare modelli che spiegano la penetrazione delle linee telefoniche fisse e mobili in 53 Paesi dell'area UE e OECD dal 1980 al 2010. I risultati mostrano che l'istituzione del regolatore e il suo assetto istituzionale sono determinanti significative della performance dell'industria in termini di diffusione dei servizi tra gli utenti finali. In particolare, la presenza del regolatore indipendente insieme con la liberalizzazione e la tutela della concorrenza sono strumenti che hanno conntribuito ad accrescere i livelli di penetrazione dei servizi telefonici.
Gravitational Waves - challenges and opportunities
Creators: name: Domcke, Valerie Fiona
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019

description: The ground-breaking first direct measurement of gravitational waves by the LIGO/VIRGO collaboration has opened up a new window to probe our Universe. After an introduction to the key concepts of gravitational wave physics (theory & experiment) I will focus on the stochastic gravitational wave background. Similar to the better known cosmic microwave background, this gravitational `white noise' originates from events in our cosmic past, and may carry valuable information about the Early Universe and particle physcis at very high energies. As a concrete example of this concept, I will demonstrate how specific couplings of the inflaton to the Standard Model can be probed by current and planned gravitational wave detectors.
Prime spettacolari immagini di Euclid
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2023

Rilasciate oggi dall'Esa le prime immagini a colori del telescopio spaziale Euclid: dall’iconica Nebulosa Testa di Cavallo, passando per un ammasso stellare e due galassie, fino al gigantesco ammasso di galassie del Perseo. Determinante il ruolo del nostro paese con i contributi dell’Asi, dell’Inaf, dell’Infn e di diverse università italiane
Production experiment, subject 56
Creators: name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Target and distractor stimuli embedded in carrier sentences. Subject is a 32-year-old female. Carried out in a quiet room in the temple of Wat Nakharin in Ban Khi Nak.
Uhz1*: giovane, supermassiccio, da record
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2023

Combinando i dati di Chandra e Jwst, un team di ricercatori ha trovato la firma rivelatrice di un buco nero supermassiccio risalente ad appena 470 milioni di anni dopo il Big Bang. Massiccio quanto la galassia che lo ospita e ancora in una fase iniziale della sua evoluzione, la sua scoperta aiuta a spiegare come si sono formati alcuni dei primi buchi neri supermassicci comparsi nell’universo. I dettagli su Nature Astronomy
Buchi neri degustatori di galassie
Creators: Chiara Badia
Publisher: name: Media Inaf
Year: 2023

Come dei sommelier, i buchi neri supermassicci assaggiano piccoli sorsi di gas denso inghiottendone solo il tre per cento e rimettendo il resto nella galassia ospite. A scoprirlo, un team di ricerca internazionale che ha utilizzato il radiotelescopio Alma per osservare, per la prima volta in assoluto, fino a una scala di pochi anni luce intorno al buco nero al centro della galassia Compasso
Principles for Designing Computer Music Controllers
Creators: name: Cook, Perry R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Sound (cs.SD)
subject: Human-Computer Interaction (cs.HC)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: H.5.5

description: This paper will present observations on the design, artistic, and human factors of creating digital music controllers. Specific projects will be presented, and a set of design principles will be supported from those examples.
description: Proceedings of the International Conference on New Interfaces for Musical Expression, 2001
title: Towards an agile and adaptive Enterprise
Creators: name: Cermann, Holger
name: Kern, Sebastian
name: Bertram, Florian
name: Sander, Martin
name: Heimann, Thomas
name: Proctor, Rachel
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2021
Subjects: subject: Adaptive Enterprise
subject: Agility
subject: Agile Transformation
subject: Change Management
subject: Principles

description: This paper contributes to the challenge of enterprises responding to factors that require a change and transformation. It proposes a concept that can be adopted by enterprises’ organizational functions to empower agility and adaptability as a response to this challenge. The concept fills the gap of transformation challenges towards agility and adaptiveness. This is of particular relevance for classic and hierarchical-oriented businesses in a frequently faster-changing world. The main element of the concept describes a stepwise thinking pattern intended to guide a function's adaption process. It builds on industry-wide accepted principles of adaptive enterprises and applies the concept of reference architectures that shows a potential application of the stepwise approach in more detail. This paper builds around industry experiences that have the function of Enterprise Architecture Management (EAM). This is because the EAM function plays a central role in driving its enterprise with transparency and decision support in the process of transformation.
Sviluppo di architetture di sensori, metodologie ed algoritmi di un Sistema di Structural Health Monitoring per l'identificazione del danno in strutture aerospaziali in composito.
Creators: name: Di Palma, Marco
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: L'utilizzo estensivo di materiali compositi in aeronautica ha determinato una completa revisione dei programmi e dei sistemi di manutenzione. I materiali compositi sono soggetti a problemi differenti da quelli che si riscontrano nei materiali metallici. Questo ha portato ad una progettazione non a stress, ma ad eventi. In uno scenario di tal genere, si perdono tutti i vantaggi di leggerezza, robustezza e rigidezza che i materiali compositi forniscono. Da qui è nata l'importanza di sviluppare un sistema di monitoraggio strutturale SHM, basato su onde di Lamb, che garantisca un controllo continuo, in tempo reale ed automatico. Al fine raggiungere gli obiettivi prefissi, sono state condotte, su diverse strutture in materiale composito, prove di propagazione delle onde di Lamb, prove di impatto al fine di ottenere un BVID, verifiche preliminari sullo stato di danneggiamento o di integrità delle strutture mediante controlli non distruttivi che rappresentano attualmente lo stato dell'arte, cioè scansioni ultrasoniche di tipo C ed analisi termografiche.
Il principale risultato ottenuto è stato lo sviluppo di una metodologia innovativa, applicabile facilmente e similmente a differenti tipologie di strutture aerospaziali in composito per il monitoraggio dello stato di salute delle stesse, ed è stato originale in quanto ha permesso di, progettare ed applicare ai materiali compositi un sistema di monitoraggio già dimostratosi efficace sui soli materiali metallici, progettare un software per automatizzare e velocizzare le analisi. Il lavoro di ricerca è stato condotto nell'ambito dei progetti europei SARISTU e Clean Sky.
Rethinking political thinking: gender and public opinion in Canada
Creators: name: O’Neill, Brenda Lee
Publisher: name: University of British Columbia
Year: 2009

description: This study argues that gender is a significant factor to consider in investigations of political opinions and presents evidence of the relevance of gender to support for various issues and in the social construction of opinion. Moreover, it argues that the patterning of women's and men's opinions, and differences in the sources of those opinions, point to a difference in political cultures: a women's political culture and a men's political culture. Using survey evidence gathered at the time of the 1988 Canadian federal election, the study follows three separate investigative paths in an attempt to uncover the existence of distinctive political cultures. The first path investigates gender gaps in opinions at the time of the election and links these findings to earlier work suggesting the existence of a women's agape ethos, their weaker hawkishness, and their weaker support of continentalism. It is shown that controls for women's lower average incomes, their lesser educational attainment, their greater support of feminism, and gender roles do not fully account for differences in women's and men's attitudes. Moreover, evidence is addressed of women's greater religious fundamentalism, which often works in such a fashion on attitudes as to attenuate gender gaps in opinions. The second path investigates the social structure of women's and men's opinions and finds that despite the similarity of opinion on a number of issues, divergence appears in the sources of opinion. The influence of economic self-interest, age cohort, region, social group memberships, religious fundamentalism and feminism are found to vary between women and men across a number of issues. The third and final path elaborates on opinion structure by the investigation of women's and men's belief systems, that is the connections between various opinions and the manner in which these connections are hierarchical. Although women's and men's belief systems are very similar, the positioning of feininist belief differs by gender. For women, regardless of their level of political sophistication, feminism is connected to the most basic ideological belief, economic liberalism. For men, however, ferninism is only connected with ideological belief among the politically sophisticated. The study links this evidence to the existence of a women's political culture and argues that it stems partially from each gender's socialization, but that it is a culture in transition. The weakening of religious belief generally is likely to result in larger gender gaps in opinion in the future.
Supplementary material for Pfizer Oncology’s Bladder Cancer Pipeline
Creators: name: Becker, Mauricio
name: Garas, Sam
Publisher: name: Pfizer
Year: 2025
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: Congress materials may include information for investigational products or for which the product is not approved and/or inconsistent with the product uses described in the Prescribing Information. Regulatory approval of investigational products or uses is dependent on the completion of the study programs and review by regulatory authorities. Pfizer does not suggest or recommend the use of Pfizer Products in any manner other than as described in the Prescribing Information. The clinical trial information is available at www.clinicaltrials.gov. This information is current as of January 1, 2025.
Total reflection X-ray fluorescence spectrometry for trace determination of iron and some additional elements in biological samples
Creators: name: Gruber, Andreas
name: Müller, Riccarda
name: Wagner, Alessa
name: Colucci, Silvia
name: Spasić Vujić, Maja
name: Leopold, Kerstin
Publisher: name: Universität Ulm
Year: 2020
Subjects: subject: Total reflection X-ray fluorescence spectrometry
subject: Iron trace analysis
subject: Biometal trace analysis
subject: Bone marrow-derived macrophages
subject: Liver tissues
subject: MULTIELEMENT DETERMINATION
subject: HEALTHY TISSUES
subject: TXRF ANALYSIS
subject: WHOLE-BLOOD
subject: HUMAN HAIR
subject: QUANTITATION
subject: EXPOSURE
subject: DDC 540 / Chemistry & allied sciences
subject: DDC 570 / Life sciences
subject: Liver cells
subject: Liver
subject: Digestion
subject: Metals
subject: Leberepithelzelle
subject: Totalreflexionsröntgenfluoreszenzanalyse
subject: Verdauung

description: Trace elements are essential for life and their concentration in cells and tissues must be tightly maintained and controlled to avoid pathological conditions. Established methods to measure the concentration of trace elements in biological matrices often provide only single element information, are time-consuming, and require special sample preparation. Therefore, the development of straightforward and rapid analytical methods for enhanced, multi-trace element determination in biological samples is an important and raising field of trace element analysis. Herein, we report on the development and validation of a reliable method based on total reflection X-ray fluorescence (TXRF) analysis to precisely quantify iron and other trace metals in a variety of biological samples, such as the liver, parenchymal and non-parenchymal liver cells, and bone marrow–derived macrophages. We show that TXRF allows fast and simple one-point calibration by addition of an internal standard and has the potential of multi-element analysis in minute sample amounts. The method was validated for iron by recovery experiments in homogenates in a wide concentration range from 1 to 1600 μg/L applying well-established graphite furnace atomic absorption spectrometry (GFAAS) as a reference method. The recovery rate of 99.93 ± 0.14% reveals the absence of systematic errors. Furthermore, the standard reference material “bovine liver” (SRM 1577c, NIST) was investigated in order to validate the method for further biometals. Quantitative recoveries (92–106%) of copper, iron, zinc, and manganese prove the suitability of the developed method. The limits of detection for the minute sample amounts are in the low picogram range.
A new (2+1)D cluster finding algorithm based on photometric redshifts: large scale structure in the Chandra Deep Field South
Creators: name: Trevese, Dario
name: Castellano, Marco
name: Fontana, Adriano
name: Giallongo, Emanuele
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: We study galaxy clustering and explore the dependence of galaxy properties on the the environment up to a redshift z~1, on the basis of a deep multi-band survey in the Chandra Deep Field South. Methods: We have developed a new method which combines galaxy angular positions and photometric redshifts to estimate the local galaxy number-density. This allows both the detection of overdensities in the galaxy distribution and the study of the properties of the galaxy population as a function of the environmental density. Results: We detect two moderate overdensities at z~0.7 and z~1 previously identified spectroscopically. We find that the fraction of red galaxies within each structure increases with volume density, extending to z~1 previous results. We measure ``red sequence'' slopes consistent with the values found in X-ray selected clusters, supporting the notion that the mass-metallicity relation hold constant up to z~1. Conclusions: Our method based on photometric redshifts allows to extend structure detection and density estimates up to the limits of photometric surveys, i.e.considerably deeper than spectroscopic surveys. Since X-ray cluster detection at high redshift is presently limited to massive relaxed structures, galaxy volume density based on photometric redshift appears as a valuable tool in the study of galaxy evolution.
description: 10 pages, 9 figures, accepted for publication in A&A
I magnifici sette di Kepler-385
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2023

Gli ultimi scoperti sono quattro. Sono tutti più grandi della Terra ma più piccoli di Nettuno, e probabilmente avvolti da spesse atmosfere. A scovarli, all’interno di un sistema planetario che di mondi si sapeva ospitarne già tre, è stato un team di ricercatori della Nasa durante la realizzazione di un catalogo compilato sulla base dei dati della missione Kepler
Quantum noises and the large scale structure
Creators: name: Lee, Wo-Lung
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose that cosmological density perturbation may originate from passive fluctuations of the inflaton, which are induced by colored quantum noise due to the coupling of the inflaton to the quantum environment. At small scales, the fluctuations grow with time to become nearly scale-invariant. However, the larger-scale modes cross out the horizon earlier and do not have enough time to grow, thus resulting in a suppression of the density perturbation. This may explain the observed low quadrupole in the CMB anisotropy data and and potentially unveil the initial time of inflation. We also discuss the implications to the running spectral index and the non-Gaussianity of the primordial density perturbation.
description: 8 pages, 3 figures, prepare for CosPA 2006
Kalman Filter Applied To A Differential Robot
Creators: name: Vera, Sendey
name: Chuquimarca, Luis
name: Plaza, Douglas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: D.3.2; B.7
subject: 93Dxx

description: This document presents the study of the problem of location and trajectory that a robot must follow. It focuses on applying the Kalman filter to achieve location and trajectory estimation in an autonomous mobile differential robot. The experimental data was carried out through tests obtained with the help of two incremental encoders that are part of the construction of the differential robot. The data transmission is carried out from a PC where the control is carried out with the Matlab/Simulink software. The results are expressed in graphs showing the path followed by the robot using PI control, the estimator of the Kalman filter in a real system.
description: 7 pages, 13 figures
GET-it (Geohazards Early Digital Twin Component) project
Creators: name: Stramondo, Salvatore
Publisher: name: Zenodo
Year: 2025

description: The ESA GET-it (Geohazards Early Digital Twin Component) project proposes a holistic approach to a DTC (Digital Twin Component) system. 

GET-it is designed to leverage Copernicus data and advanced algorithms, and generate information services for geohazards that address real needs of institutional and commercial stakeholders.

GET-it benefits from the experience of leading geohazard researchers having over two decades of experience integrating satellite, airborne, and ground-based observations along with complex simulations to better understand geohazard processes and develop solutions for the preservation of lives and the protection of valuable assets.

GET-it offers for the first time a portfolio of cutting-edge processors and products fully exploiting EO data encompassing the whole spectrum of volcano- and seismic-related geohazards (at least), in order to support information services. The DTC is designed as a customizable environment supporting the stakeholders communities to design accurate and actionable adaptation strategies and mitigation measures.

GET-it addresses the needs and targets public institutions, decision makers and private customers (among others, aviation stakeholders, engine manufacturers, the insurance sector, road/infrastructure authorities, and energy providers) dealing with geohazards.
Stenostomum O. Schmidt 1848
Creators: name: Noreña, Carolina
name: Damborenea, Cristina
name: Brusa, Francisco
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Turbellaria
Catenulida
Stenostomidae
Stenostomum

description: Genus Stenostomum O. Schmidt, 1848
Diagnosis: Catenulida without either statocyst or preoral ciliated furrow. Large brain formed by a pair of anterior lobes, connected to each other by means of a transverse commissure in their posterior region, and a pair of posterior lobes. Paired ciliated pits associated with the anterior cerebral lobes. Light-refracting bodies present; number, composition and arrangement variable; frequently associated with the posterior cerebral lobes. Epithelial rhabdites and excretophores present in numerous species. Asexual reproduction as the main reproductive mechanism. Gonads known only for some species; the single testis is antero-dorsal and the ovary mid-ventral.
Type species: Stenostomum leucops (Dugès, 1828) O. Schmidt, 1848.
Distribution: Cosmopolitan.
Valid species: See below for South American species, and Table 1 for species recorded only in other world regions.
description: Published as part of Noreña, Carolina, Damborenea, Cristina & Brusa, Francisco, 2005, A taxonomic revision of South American species of the genus Stenostomum O. Schmidt (Platyhelminthes: Catenulida) based on morphological characters, pp. 37-58 in Zoological Journal of the Linnean Society 144 (1) on pages 39-40, DOI: 10.1111/j.1096-3642.2005.00157.x, http://zenodo.org/record/4634680
Lucy, il primo fly-by è una doppia sorpresa
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2023

L’asteroide Dinkinesh, scelto per il primo sorvolo di Lucy nella fascia principale perché si trovava proprio lungo il percorso, è in realtà un sistema binario. Attorno al corpo principale, il più piccolo della fascia principale a essere osservato da vicino, orbita infatti una piccola luna. Con un commento del deputy principal investigator della missione Lucy, Simone Marchi
title: A systematic literature review of machine learning canvases
Creators: name: Thiée, Lukas-Walter
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2021
Subjects: subject: Machine Learning
subject: Canvas
subject: Literature Review
subject: SME

description: The use of machine learning technology is still significantly lower in small and medium sized enterprises than in large enterprises. It seems that there are specific challenges in the implementation of data-driven methods, that hinder SMEs in their adoption. One approach to support the initialization and execution of such methods is the use of boundary objects, e.g., canvases, serving as a visual communication document. As it is not clear which approaches are being pursued in detail and how they are interrelated, in this paper, a systematic literature review is being presented, that identifies and analyzes 18 canvas artifacts. These canvases represent the status quo and they can be grouped into four distinct categories of different foci. The aggregation of the fields and questions provides an essence of canvas contents, to point out gaps and ultimately to expand the canvas approach as well as ML adoption.
Galileo (R)evolution
Creators: Rossella Spiga
Publisher: name: Media Inaf
Year: 2023

Domenica 5 novembre alle 11, a Firenze, ci sarà la premiere del documentario “Galileo (R)evolution - Il Cammino della Scienza”. A quattrocento anni dalla pubblicazione de “Il Saggiatore” di Galileo, il regista Carlo Borean racconta chi ne sono gli eredi e com'è il mondo della scienza al giorno d'oggi. A dare vita alla figura dell'astrofisico contemporaneo, anche due ricercatori dell'Osservatorio Inaf di Arcetri
Development of a Mouse for Individuals Without Upper Limbs Using Arduino Technology
Creators: name: Gunsha, Alfonso
name: Chuquimarca, Luis
name: Pardo, Pedro
name: Herrera, David
Publisher: name: arXiv
Year: 2024
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Systems and Control (eess.SY)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: B.7
subject: 94Cxx

description: This project focuses on the design and construction of a prototype mouse based on the Arduino platform, intended for individuals without upper limbs to use computers more effectively. The prototype comprises a microcontroller responsible for processing signals from the MPU-6050 sensor, used as a reference for cursor position, and foot-operated buttons for right and left-click functions. Its design enables cursor control through head movements, providing users with an easy and intuitive way to interact with the computer's graphical interface. Feasibility testing was conducted through experimental trials, resulting in ideal accuracy and precision. These trials indicate that the device is viable for use in individuals without upper limbs.
description: 6 pages, 9 figures
Production experiment, subject 55
Creators: name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Target and distractor stimuli embedded in carrier sentences. Subject is a 23-year-old female. Carried out in a quiet room in the temple of Wat Nakharin in Ban Khi Nak.
Landau levels for the $(2+1)$ Dunkl-Klein-Gordon oscillator
Creators: name: Mota, R. D.
name: Ojeda-Guillén, D.
name: Salazar-Ramírez, M.
name: Granados, V. D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we study the $(2+1)$-dimensional Klein-Gordon oscillator coupled to an external magnetic field, in which we change the standard partial derivatives for the Dunkl derivatives. We find the energy spectrum (Landau levels) in an algebraic way, by introducing three operators that close the $su(1,1)$ Lie algebra and from the theory of unitary representations. Also we find the energy spectrum and the eigenfunctions analytically, and we show that both solutions are consistent. Finally, we demonstrate that when the magnetic field vanishes or when the parameters of the Dunkl derivatives are set zero, our results are adequately reduced to those reported in the literature.
description: 11 pages. arXiv admin note: text overlap with arXiv:2008.13204
XMM-Newton discovery of transient X-ray pulsar in NGC 1313
Creators: name: Trudolyubov, Sergey
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the discovery and analysis of the transient X-ray pulsar XMMU J031747.5-663010 detected in the 2004 November 23 XMM-Newton observation of the spiral galaxy NGC 1313. The X-ray source exhibits pulsations with a period P~765.6 s and a nearly sinusoidal pulse shape and pulsed fraction ~38% in the 0.3-7 keV energy range. The X-ray spectrum of XMMU J031747.5-663010 is hard and is well fitted with an absorbed simple power law of photon index ~1.5 in the 0.3-7 keV energy band. The X-ray properties of the source and the absence of an optical/UV counterpart brighter than 20 mag allow us to identify XMMU J031747.5-663010 as an accreting X-ray pulsar located in NGC 1313. The estimated absorbed 0.3-7 keV luminosity of the source L~1.6\times 10^{39} ergs/s, makes it one of the brightest X-ray pulsars known. Based on the relatively long pulse period and transient behaviour of the source, we classify it as a Be binary X-ray pulsar candidate. XMMU J031747.5-663010 is the second X-ray pulsar detected outside the Local Group, after transient 18 s pulsating source CXOU J073709.1+653544 discovered in the nearby spiral galaxy NGC 2403.
description: 6 pages, 4 figures. Accepted for publication in MNRAS. Updated to match the accepted version
title: InfoLab Saar - Schülerlabor Informatik der Universität des Saarlandes
Creators: name: Kirsch, Nadine
name: Reese, Kerstin
name: Wolf, Verena
Publisher: name: Gesellschaft für Informatik, Bonn
Year: 2021
Subjects: subject: Schülerlabor
subject: Lehrkräftebildung
subject: Informatische Bildung für alle Lehramtsstudierenden
subject: Online-Kurse
subject: Grundschule
subject: Sekundarstufe 1
subject: Sekundarstufe 2
subject: Berufliche Schulen

description: Das „InfoLab Saar - Schülerlabor Informatik an der Universität des Saarlandes” ist 2018 auf Initiative von Prof. VerenaWolf gegründet worden, um die Infomatik an saarländischen Schulen zu stärken. Neben Events für Schüler*innen bietet das InfoLab Saar auch Veranstaltungen für Studierende und Fortbildungen für Lehrkräfte an. In diesem Beitrag werden Ausstattung und Angebot des InfoLab Saar beschrieben. Das Feedback der Teilnehmenden wird aufgezeigt und ein Ausblick auf geplante Projekte gegeben.
Innovative strategies to improve fertility
of buffalo semen
Creators: name: Longobardi, Valentina
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: The improvement of fertility is an important contribution that applied scientific research can provide to buffalo breeding, especially in productive areas like the Campania region. Many studies have been conducted to improve the management of the female reproductive system, while insufficient are the information about the effect of the male on the reproductive efficiency in this species. Buffalo is a photoperiodic animal that tends to increase the reproductive activity during periods when daylight hours decrease. In particular, in the male, it is manifested by a reduction of libido when daylight hours increase. This causes a reduction in the number of jumps and a worsening of the qualitative characteristics of the semen produced . Also, the cryopreservation process influences the quality of the semen causing premature sperm capacitation hence, reducing its longevity in the female reproductive tract. At present, for cryopreservation of semen, standard protocols are used equally for all species, not considering the significant interspecific differences that exist. The aim of the research was, therefore, to evaluate the effect of season on buffalo frozen-thawed semen and to improve its quality by analyzing the effects of the addition of antioxidants such as resveratrol at various concentrations (0.5, 1, 10 and 50 uM), carnitine (2.5 and 7.5 mM ) and sterols, such as cholesterol (1.5 and 3 mg /ml), to the standard freezing extenders. The addition of antioxidants and / or sterol has stabilized the sperm membrane, reducing the state of capacitation, improving motility and consequently semen quality. The effect of the photoperiod was evident with a better semen quality during autumn. Based on these results was also evaluated fertilizing capacity both in vivo (resveratrol and cholesterol) and in vitro (resveratrol and carnitine)selecting concentrations that showed a more marked effect on the stabilization of the sperm membrane. The results obtained suggest that the premature capacitation after cryopreservation of spermatozoa is reduced during the favorable season and that the addition of antioxidants and / or sterols has a positive effect on buffalo semen quality and consequently, on in vitro and in vivo fertility.