cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identities Involving Zeros of Ramanujan and Shanks Cubic Polynomials
Creators: name: Barbero, Stefano
name: Cerruti, Umberto
name: Murru, Nadir
name: Abrate, Marco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11C08, 11B83

description: In this paper we highlight the connection between Ramanujan cubic polynomials (RCPs) and a class of polynomials, the Shanks cubic polynomials (SCPs), which generate cyclic cubic fields. In this way we provide a new characterization for RCPs and we express the zeros of any RCP in explicit form, using trigonometric functions. Moreover, we observe that a cyclic transform of period three permutes these zeros. As a consequence of these results we provide many new and beautiful identities. Finally we connect RCPs to Gaussian periods, finding a new identity, and we study some integer sequences related to SCPs .
On the nature of spatiotemporal light bullets in bulk Kerr media
Creators: name: Majus, D.
name: Tamošauskas, G.
name: Gražulevičiūtė, I.
name: Garejev, N.
name: Lotti, A.
name: Couairon, A.
name: Faccio, D.
name: Dubietis, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a detailed experimental investigation, which uncovers the nature of light bullets generated from self-focusing in a bulk dielectric medium with Kerr nonlinearity in the anomalous group velocity dispersion regime. By high dynamic range measurements of three-dimensional intensity profiles, we demonstrate that the light bullets consist of a sharply localized high-intensity core, which carries the self-compressed pulse and contains approximately 25% of the total energy, and a ring-shaped spatiotemporal periphery. Sub-diffractive propagation along with dispersive broadening of the light bullets in free space after they exit the nonlinear medium indicate a strong space-time coupling within the bullet. This finding is confirmed by measurements of spatiotemporal energy density flux that exhibits the same features as stationary, polychromatic Bessel beam, thus highlighting the physical nature of the light bullets.
Sparasion sublevis Kieffer 1906
Creators: name: Awad, Jessica
name: Zimmermann, Dominique
name: Talamas, Elijah
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Scelionidae
Sparasion
Sparasion sublevis

description: Sparasion sublevis Kieffer, 1906
Fig. 6D
Sparasion subleve Kieffer, 1906: 166, 171. Type locality: Italy.
Sparasion sublevis – Kieffer 1926: 283, 287 (emendation).
Material examined
Syntypes ITALY • 1 ♀; Venice Lido; Aug.; NHMW-HYM#0006876 • 1 ♂; Catania; NHMW-HYM#0006877 • 1 ♀; Trieste; Aug. 1904; NHMW-HYM#0006878.
description: Published as part of Awad, Jessica, Zimmermann, Dominique & Talamas, Elijah, 2024, A photographic type catalogue of Platygastroidea (Insecta, Hymenoptera) in the Natural History Museum Vienna, pp. 1-58 in European Journal of Taxonomy 938 on pages 48-49, DOI: 10.5852/ejt.2024.938.2565, http://zenodo.org/record/12106502
The malleability of uranium: manipulating the charge-density wave in epitaxial films
Creators: name: Springell, R.
name: Ward, R. C. C.
name: Bouchet, J.
name: Chivall, J.
name: Wermeille, D.
name: Normile, P. S.
name: Langridge, S.
name: Zochowski, S. W.
name: Lander, G. H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report x-ray synchrotron experiments on epitaxial films of uranium, deposited on niobium and tungsten seed layers. Despite similar lattice parameters for these refractory metals, the uranium epitaxial arrangements are different and the strains propagated along the a-axis of the uranium layers are of opposite sign. At low temperatures these changes in epitaxy result in dramatic modifications to the behavior of the charge-density wave in uranium. The differences are explained with the current theory for the electron-phonon coupling in the uranium lattice. Our results emphasize the intriguing possibilities of producing epitaxial films of elements that have complex structures like the light actinides uranium to plutonium.
description: 6 pages, 6 figures
The Near Earth Asteroid associations
Creators: name: Jopek, Tadeusz J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have made an extensive search for grouping amongst the near Earth asteroids (NEAs). We used two D- functions and rigorous cluster analysis approach. We have found sev- eral new groups (associations) among the NEAs: the objects moving on similar orbits with small minimum orbital intersection distances (MOID) with the Earth trajectory. Reliability of some of these groups is quite high.
Association of Cardiac Biomarkers With Major Adverse Cardiovascular Events in High-risk Patients With Diabetes A Secondary Analysis of the DECLARE-TIMI 58 Trial
Creators: name: Zelniker, Thomas
name: Wiviott, Stephen D
name: Mosenzon, Ofri
name: Goodrich, Erica L
name: Jarolim, Petr
name: Cahn, Avivit
name: Bhatt, Deepak
name: A. Leiter, Lawrence
name: McGuire, Darren K.
name: Wilding, John
name: oleg, averkov
name: Budaj, Andrzej
name: Parkhomenko, A.
name: Ray, Kausik
name: Gause-Nilsson, Ingrid
name: Langkilde, A
name: Fredriksson, Martin
name: Raz, Itamar
name: S. Sabatine, Marc
name: Morrow, David A
Publisher: name: Health Research Alliance
Year: 2023
Subjects: Cardiology (incl. cardiovascular diseases)

description: In this study, NT-proBNP and hsTnT were associated with MACE in patients with T2D at high risk of atherosclerotic events, and in individuals with high levels of both biomarkers, dapagliflozin was associated with reduced MACE event rates.
Force Rendering and Its Evaluation of a Friction-based Walking Sensation Display for a Seated User
Creators: name: Kato, Ginga
name: Kuroda, Yoshihiro
name: Kiyokawa, Kiyoshi
name: Takemura, Haruo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Most existing locomotion devices that represent the sensation of walking target a user who is actually performing a walking motion. Here, we attempted to represent the walking sensation, especially a kinesthetic sensation and advancing feeling (the sense of moving forward) while the user remains seated. To represent the walking sensation using a relatively simple device, we focused on the force rendering and its evaluation of the longitudinal friction force applied on the sole during walking. Based on the measurement of the friction force applied on the sole during actual walking, we developed a novel friction force display that can present the friction force without the influence of body weight. Using performance evaluation testing, we found that the proposed method can stably and rapidly display friction force. Also, we developed a virtual reality (VR) walk-through system that is able to present the friction force through the proposed device according to the avatar's walking motion in a virtual world. By evaluating the realism, we found that the proposed device can represent a more realistic advancing feeling than vibration feedback.
Mário Braga, O Livro das Sombras, 2.ª edição, 1970, vol. de 200 páginas, 200x145; O Reino Circular, 2.ª edição, 1971, vol. de LX e 136 páginas, 200x145; Os Olhos e as vozes, 1.ª edição, 1971, vol. de 208 páginas, 200x145 - todos da Parceria A. M. Pereira,
Creators: name: Bragança, António Joaquim
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Camilo Castelo Branco, Noites de Lamego. Parceria A. M. Pereira Lda. Vol. de 23 ps. 130x195. 6.ª Ed. Lisboa 1970
Creators: name: Coutinho, Jorge
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Crumpled-to-tubule transition and shape transformations of a model of self-avoiding spherical meshwork
Creators: name: Koibuchi, Hiroshi
name: Shobukhov, Andrey
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This paper analyzes a new self-avoiding (SA) meshwork model using the canonical Monte Carlo simulation technique on lattices that consist of connection-fixed triangles. The Hamiltonian of this model includes a self-avoiding potential and a pressure term. The model identifies a crumpled-to-tubule (CT) transition between the crumpled and tubular phases. This is a second-order transition, which occurs when the pressure difference between the inner and outer sides of the surface is close to zero. We obtain the Flory swelling exponents $ν_{{\rm R}^2}(=\!D_f/2)$ and $\barν_{\rm v}$ corresponding to the mean square radius of gyration $R_g^2$ and enclosed volume $V$, where $D_f$ is the fractal dimension. The analysis shows that $\barν_{\rm v}$ at the transition is almost identical to the one of the smooth phase of previously reported SA model which has no crumpled phase.
description: 15 pages, 10 figures
Macroscopically deterministic, Markovian thermalization in finite quantum spin systems
Creators: name: Niemeyer, Hendrik
name: Michielsen, Kristel
name: de Raedt, Hans
name: Gemmer, Jochen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A key feature of non-equilibrium thermodynamics is the Markovian, deterministic relaxation of coarse observables such as, for example, the temperature difference between two macroscopic objects which evolves independently of almost all details of the initial state. We demonstrate that the unitary dynamics for moderately sized spin-1/2 systems may yield the same type of relaxation dynamics for a given magnetization difference. This observation might contribute to the understanding of the emergence of thermodynamics within closed quantum systems.
title: H. Plessner, “I gradi dell’organico e l’uomo. Introduzione all’antropologia filosofica”, Bollati Boringhieri, Torino 2006
Creators: name: Scarpelli , Giacomo
Publisher: name: Roma Tre-Press
Year: 2007

description: B@belonline vol. 3 L’eredità di Hannah Arendt
Stream and sporadic meteoroids associated with Near Earth Objects
Creators: name: Jopek, Tadeusz J.
name: Williams, Iwan P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: NEOs come close to the Earth's orbit so that any dust ejected from them, might be seen as a meteor shower. Orbits evolve rapidly, so that a similarity of orbits at one given time is not suffcient to prove a relationship, orbital evolution over a long time interval also has to be similar. Sporadic meteoroids can not be associated with a single parent body, they can only be classified as cometary or asteroidal. However, by considering one parameter criteria, many sporadics are not classified properly therefore two parameter approach was proposed.
Nucleon Form Factors with 2+1 Flavors of Domain Wall Fermions and All-Mode-Averaging
Creators: name: Lin, Meifeng
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report recent progress in the calculations of the isovector nucleon electromagnetic form factors using 2+1 flavors of domain wall fermions at pion masses of 170 MeV and 250 MeV. The lattice size is fixed at $32^3\times64$ with a lattice cutoff scale of 1.37(1) GeV. For the calculations with $M_π= 170$ MeV, we employed the All-Mode-Averaging (AMA) technique, which led to roughly a factor of 20 improvement in computational efficiency and has reduced the statistical errors in our results significantly. We were also able to do calculations at two different source-sink separations, at roughly 1.3 fm and 1.0 fm, without much additional cost by reusing the low eigen-modes stored for the AMA calculations. We will present results for the isovector form factors and their derived quantities, including the Dirac and Pauli radii, anomalous magnetic moment and discuss the effects of possible excited-state contaminations. Connected contributions to the isoscalar Dirac and Pauli form factors will also be shown.
description: 7 pages, 11 figures. Talk presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), Mainz, Germany, July 29 - August 3, 2013
Camilo Castelo Branco, Divindade de Jesus. Parceria A. M. Pereira Lda. Vol. de 216 ps. 130x195. 8.ª Ed. Lisboa 1971
Creators: name: Coutinho, Jorge
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Trace decategorification of categorified quantum sl(2)
Creators: name: Beliakova, Anna
name: Habiro, Kazuo
name: Lauda, Aaron D.
name: Živković, Marko
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 81R50, 17B37, 16E40

description: The trace or the $0$th Hochschild--Mitchell homology of a linear category $\mathcal{C}$ may be regarded as a kind of decategorification of $\mathcal{C}$. We compute traces of the two versions $\dot{\mathcal{U}}$ and $\dot{\mathcal{U}}^*$ of categorified quantum $\mathfrak{sl}_2$ introduced by the third author. One version of the trace coincides with the split Grothendieck group $K_0(\dot{\mathcal{U}})$, which is known to be isomorphic to the the integral idempotented form $\dot{\mathbf{U}}(\mathfrak{sl}_2)$ of quantum $\mathfrak{sl}(2)$. The higher Hochschild--Mitchell homology in this case is zero. The trace of the second version is isomorphic to the idempotented integral form of the current algebra $\mathbf{U}(\mathfrak{sl}_2[t])$.
description: 33 pages, xypic figures
Camilo Castelo Branco, A Bruxa de Monte Córdova, 7.ª edição, Parceria A. M. Pereira, Lisboa, 1970, vol. de 282 págs. 200x130
Creators: name: Bragança, António Joaquim
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Rivularia Heude 1890
Creators: name: Bocxlaer, Bert Van
name: Strong, Ellen E.
name: Richter, Romy
name: Stelbrink, Björn
name: Rintelen, Thomas Von
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Architaenioglossa
Viviparidae
Rivularia

description: GENUS RIVULARIA HEUDE, 1890
Type species: Paludina auriculata von Martens, 1875, by subsequent designation (Crosse, 1891).
description: Published as part of Bocxlaer, Bert Van, Strong, Ellen E., Richter, Romy, Stelbrink, Björn & Rintelen, Thomas Von, 2018, Anatomical and genetic data reveal that Rivularia Heude, 1890 belongs to Viviparinae (Gastropoda: Viviparidae), pp. 1-23 in Zoological Journal of the Linnean Society 182 on page 3
The Python package pyam for analysis, validation & visualization of integrated-assessment and energy-systems scenarios
Creators: name: Huppmann, Daniel
name: Hackstock, Philip
Publisher: name: Zenodo
Year: 2022

description: This presentation was given as part of the ECEMP conference (https://www.energymodellingplatform.eu/conferences/ecemp-2022/) on October 6th 2022.
Electric potential profile of a spherical soft particle with a charged core
Creators: name: Phan, Anh D.
name: Tracy, Dustin A.
name: Nguyen, T. L. Hoai
name: Viet, N. A.
name: Phan, The-Long
name: Nguyen, Thanh H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The electrostatic potential profile of a spherical soft particle is derived by solving the Poisson-Boltzmann equations on a spherical system both numerically and analytically. The soft particle is assumed to consist of an ion-permeable charged outer layer and a non-permeable charged core with constant charged density. The contribution of the core to the potential profile is calculated for different charges and dielectric constants. Our results show that the charged core heavily influences the local potential within the soft particle. In contrast, the potential distribution outside the particle in the salt solution is found to be weakly dependent on the core features. These findings are consistent with previous experiments showing the minor impact of the core of the MS2 virus on its overall electrical properties. Our studies also indicate that while a change in temperature from 290 K to 310 K only slightly varies the potential, the ionic strength in the range of 1-600 mM has a significant effect on the potential profile. Our studies would provide good understanding for experimental research in the field of biophysics and nanomedicine.
description: 5 pages, 3 figures
IIAMS- Innovative Infusion Airframe Manufacturing System
Creators: name: Diaz, Sebastian
name: Torres, Manuel
Publisher: name: Zenodo
Year: 2020
Subjects: infusion
carbon fiber dry tape
lightweight carbon fiber tooling
airframe integrated structures
portable equipment
augmented reality
automated dry fiber placement

description: Under Cleansky 2 program, MTORRES has implemented and tested an innovative airframe manufacturing system for AIRBUS. MTORRES has been responsible for the complete process design and manufacturing of both the equipment and the demonstration parts, as well as the simulation of the critical steps. IIAMS project, number 820845 (Innovative Infusion Airframe Manufacturing System, www.iiams.eu ) belongs to the advanced low‐weight and high‐performance structures domain, and its main objective is the development of an innovative pilot system able to manufacture an integrated composite wing box structure according to topic specifications. It started at Q3 2018 and it has finished last September 2020. The goal of this innovative system is to enable manufacturing of flyable components belonging to a wing box carbon fiber composite structure. These components are manufactured by infusion, and all the structural elements (lower skin, front & rear spars, stringers and stiffeners) make use of MTORRES AFP technology for dry fiber. 3D layup was used for the skin, whereas 2D layup and hotforming was decided for the rest of elements. Key features of IIAMS are:  Out Of Autoclave process (OoA, high temperature, LRI);  Highest level of integration (one-shot infusion of all the elements);  Lightweight tooling (carbon fiber, use of overhead cranes was avoided);  Portable system (easy setup and standalone operation);  Automation technologies integration (AFP, ACTI-Automated Center for Thermo Infusion);  and Industry 4.0 technologies integration (including AR, Augmented Reality). Manufacturing of the portable production equipment, transportation to Topic Manager site, fast setup and manufacturing of 2 full-scale dummy parts, as well as aeronautical grade material demonstrators, have been successfully achieved. Parts show an extremely high degree of integration, which includes not only the skin and stringers, but also the front and rear spars, along with their stiffeners, everything infused one-shot but keeping the same tolerances that can be achieved in standard assembly jigs, when parts are individually positioned and fastened together. One-shot infusion avoids mechanical joints, decreases weight and increases robustness. MTORRES dry tape has been used in the dummies with excellent results, both in process (AFP, forming and infusion) and in mechanical properties.
A Perceptual Shape Loss for Monocular 3D Face Reconstruction
Creators: name: Otto, Christopher
name: Chandran, Prashanth
name: Zoss, Gaspard
name: Gross, Markus
name: Gotardo, Paulo
name: Bradley, Derek
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Monocular 3D face reconstruction is a wide-spread topic, and existing approaches tackle the problem either through fast neural network inference or offline iterative reconstruction of face geometry. In either case carefully-designed energy functions are minimized, commonly including loss terms like a photometric loss, a landmark reprojection loss, and others. In this work we propose a new loss function for monocular face capture, inspired by how humans would perceive the quality of a 3D face reconstruction given a particular image. It is widely known that shading provides a strong indicator for 3D shape in the human visual system. As such, our new 'perceptual' shape loss aims to judge the quality of a 3D face estimate using only shading cues. Our loss is implemented as a discriminator-style neural network that takes an input face image and a shaded render of the geometry estimate, and then predicts a score that perceptually evaluates how well the shaded render matches the given image. This 'critic' network operates on the RGB image and geometry render alone, without requiring an estimate of the albedo or illumination in the scene. Furthermore, our loss operates entirely in image space and is thus agnostic to mesh topology. We show how our new perceptual shape loss can be combined with traditional energy terms for monocular 3D face optimization and deep neural network regression, improving upon current state-of-the-art results.
description: Accepted to PG 2023. Project page: https://studios.disneyresearch.com/2023/10/09/a-perceptual-shape-loss-for-monocular-3d-face-reconstruction/ Video: https://www.youtube.com/watch?v=RYdyoIZEuUI
Scanning electron microscopy of Rydberg-excited Bose-Einstein condensates
Creators: name: Manthey, T.
name: Weber, T. M.
name: Niederprüm, T.
name: Langer, P.
name: Guarrera, V.
name: Barontini, G.
name: Ott, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on the realization of high resolution electron microscopy of Rydberg-excited ultracold atomic samples. The implementation of an ultraviolet laser system allows us to excite the atom, with a single-photon transition, to Rydberg states. By using the electron microscopy technique during the Rydberg excitation of the atoms, we observe a giant enhancement in the production of ions. This is due to $l$-changing collisions, which broaden the Rydberg level and therefore increase the excitation rate of Rydberg atoms. Our results pave the way for the high resolution spatial detection of Rydberg atoms in an atomic sample.
Humidity effects on tip-induced polarization switching in lithium niobate
Creators: name: Ievlev, Anton V.
name: Morozovska, Anna N.
name: Shur, Vladimir Ya.
name: Kalinin, Sergei V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Interest to ferroelectric materials has been increased significantly in last decades due to development of new generation of nonlinear optical and data storage devices. Scanning probe microscopy (SPM) can be used both for study of domain structures with nanoscale spatial resolution and for writing the isolated nanodomains by local application of the electric field. Tip-induced switching in the ambient still needs experimental investigations and theoretical explorations. Here we studied influence of the value of relative humidity in the SPM chamber on the process of tip-induced polarization switching. This phenomenon was attributed to existing of the water meniscus between tip and the sample surface in humid atmosphere. Presented results are important for further complex investigations of the ferroelectric materials and their applications.
description: 15 pages, 5 figures, Submitted to Applied Physics Letters
Generalized Multi-kernel Maximum Correntropy Kalman Filter for Disturbance Estimation
Creators: name: Li, Shilei
name: Shi, Dawei
name: Lou, Yunjiang
name: Zou, Wulin
name: Shi, Ling
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Disturbance observers have been attracting continuing research efforts and are widely used in many applications. Among them, the Kalman filter-based disturbance observer is an attractive one since it estimates both the state and the disturbance simultaneously, and is optimal for a linear system with Gaussian noises. Unfortunately, The noise in the disturbance channel typically exhibits a heavy-tailed distribution because the nominal disturbance dynamics usually do not align with the practical ones. To handle this issue, we propose a generalized multi-kernel maximum correntropy Kalman filter for disturbance estimation, which is less conservative by adopting different kernel bandwidths for different channels and exhibits excellent performance both with and without external disturbance. The convergence of the fixed point iteration and the complexity of the proposed algorithm are given. Simulations on a robotic manipulator reveal that the proposed algorithm is very efficient in disturbance estimation with moderate algorithm complexity.
description: in IEEE Transactions on Automatic Control (2023)
Bonifazi, Duilio, Filosofia e Cristianesimo - Discussioni recenti - Lib. Ed. della Pont. Univ. Lateranense. Vol. de 156 ps. 170x240. Roma 1968
Creators: name: Coutinho, Jorge
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Flash ADC data processing with correlation coefficients
Creators: name: Blyth, D.
name: Gibson, M.
name: Mcfarland, D.
name: Comfort, J. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The large growth of flash ADC techniques for processing signals, especially in applications of streaming data, raises issues such as data flow through an acquisition system, long-term storage, and greater complexity in data analysis. In addition, experiments that push the limits of sensitivity need to distinguish legitimate signals from noise. The use of correlation coefficients is examined to address these issues. They are found to be quite successful well into the noise region. The methods can also be extended to Field Programmable Gate Array modules for compressing the data flow and greatly enhancing the event rate capabilities.
description: 9 pages, 2 figures
Simple simulation of diffusion bridges with application to likelihood inference for diffusions
Creators: name: Bladt, Mogens
name: Sørensen, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: With a view to statistical inference for discretely observed diffusion models, we propose simple methods of simulating diffusion bridges, approximately and exactly. Diffusion bridge simulation plays a fundamental role in likelihood and Bayesian inference for diffusion processes. First a simple method of simulating approximate diffusion bridges is proposed and studied. Then these approximate bridges are used as proposal for an easily implemented Metropolis-Hastings algorithm that produces exact diffusion bridges. The new method utilizes time-reversibility properties of one-dimensional diffusions and is applicable to all one-dimensional diffusion processes with finite speed-measure. One advantage of the new approach is that simple simulation methods like the Milstein scheme can be applied to bridge simulation. Another advantage over previous bridge simulation methods is that the proposed method works well for diffusion bridges in long intervals because the computational complexity of the method is linear in the length of the interval. For $ρ$-mixing diffusions the approximate method is shown to be particularly accurate for long time intervals. In a simulation study, we investigate the accuracy and efficiency of the approximate method and compare it to exact simulation methods. In the study, our method provides a very good approximation to the distribution of a diffusion bridge for bridges that are likely to occur in applications to statistical inference. To illustrate the usefulness of the new method, we present an EM-algorithm for a discretely observed diffusion process.
description: Published in at http://dx.doi.org/10.3150/12-BEJ501 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Cornford, F. M., Estudos de Filosofia Antiga (Sócrates, Platão e Aristóteles). Bibl. Filosófica. Atlântida Ed. Vol. de 88 ps. 140x195. Coimbra 1969
Creators: name: Coutinho, Jorge
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Bagot, J.-P. e Debray, P., Juventude Rebelde. Ed. Aldecoa e Ed. Sígueme. Vol. de 176 ps. 117x188. Burgos e Salamanca 1969
Creators: name: Paula, Manuel António De
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
High-speed optical data transmission for detector instrumentation in particle physics
Creators: name: Karnick, Djorn
Publisher: name: Karlsruhe
Year: 2020
Subjects: optical data transmission
particle physics
silicon photonics
photonic components
wavelength-division multiplexing
fiber-to-chip coupling

description: This work discusses the advantage of optical transmission utilizing wavelength-division multiplexing for the read-out of experimental data in detector instrumentation in high-energy physics, astroparticle physics or photon science. A multi-channel optical transmitter is developed as the core component on a silicon-on-insulator platform. It implements Mach-Zehnder modulators with a depletion-type pn-phase shifter in each arm, while the (de )multiplexers rely on planar concave gratings. The modulator design is expected to support a symbol rate in the range 40 GBd even with a phase shifter length of 3 mm. The development of an efficient simulation method is presented, which allows for the reliable prediction of the steady-state modulator characteristics. Furthermore, this work addresses the packaging technology for grating-coupled silicon photonic components. In particular, a fabrication and assembly process for a planar fiber-to-chip coupling using angle-polished single-mode fibers is developed. A long-term-stable coupling with a small footprint is achieved, of which the coupling efficiency is only weakly dependent on ambient conditions.
Chemistry in isolation: High CCH/HCO+ line ratio in the AMIGA galaxy CIG 638
Creators: name: Martin, S.
name: Verdes-Montenegro, L.
name: Aladro, R.
name: Espada, D.
name: Argudo-Fernandez, M.
name: Kramer, C.
name: Scott, T. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Multi-molecule observations towards an increasing variety of galaxies have been showing that the relative molecular abundances are affected by the type of activity. However, these studies are biased towards bright active galaxies, which are typically in interaction. We study the molecular composition of one of the most isolated galaxies in the local Universe where the physical and chemical properties of their molecular clouds have been determined by intrinsic mechanisms. We present 3 mm broad band observations of the galaxy CIG 638, extracted from the AMIGA sample of isolated galaxies. The emission of the J=1-0 transitions of CCH, HCN, HCO+, and HNC are detected. Integrated intensity ratios between these line are compared with similar observations from the literature towards active galaxies including starburst galaxies (SB), active galactic nuclei (AGN), luminous infrared galaxies (LIRG), and GMCs in M33. A significantly high ratio of CCH with respect to HCN, HCO+, and HNC is found towards CIG 638 when compared with all other galaxies where these species have been detected. This points to either an overabundance of CCH or to a relative lack of dense molecular gas as supported by the low HCN/CO ratio, or both. The data suggest that the CIG 638 is naturally a less perturbed galaxy where a lower fraction of dense molecular gas, as well as a more even distribution could explain the measured ratios. In this scenario the dense gas tracers would be naturally dimmer, while the UV enhanced CCH, would be overproduced in a less shielded medium.
description: Letter accepted for publication in A&A
Redaccion Ius Canonicum, El proyecto de ley fundamental de la Iglesia. Texto bilingue y análisis crítico. Ed. Universidad de Navarra. Vol. de 228 ps. 195x240. Pamplona 1971
Creators: name: Marques, José Silva
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Artificial intelligence and machine learning in mobile apps for mental health: A scoping review.
Creators: name: Milne-Ives, Madison
name: Selby, Emma
name: Inkster, Becky
name: Lam, Ching
name: Meinert, Edward
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Behavioral and Social Science
Depression
Mental Health
Mental health
Generic health relevance
3 Good Health and Well Being

description: Mental health conditions can have significant negative impacts on wellbeing and healthcare systems. Despite their high prevalence worldwide, there is still insufficient recognition and accessible treatments. Many mobile apps are available to the general population that aim to support mental health needs; however, there is limited evidence of their effectiveness. Mobile apps for mental health are beginning to incorporate artificial intelligence and there is a need for an overview of the state of the literature on these apps. The purpose of this scoping review is to provide an overview of the current research landscape and knowledge gaps regarding the use of artificial intelligence in mobile health apps for mental health. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) and Population, Intervention, Comparator, Outcome, and Study types (PICOS) frameworks were used to structure the review and the search. PubMed was systematically searched for randomised controlled trials and cohort studies published in English since 2014 that evaluate artificial intelligence- or machine learning-enabled mobile apps for mental health support. Two reviewers collaboratively screened references (MMI and EM), selected studies for inclusion based on the eligibility criteria and extracted the data (MMI and CL), which were synthesised in a descriptive analysis. 1,022 studies were identified in the initial search and 4 were included in the final review. The mobile apps investigated incorporated different artificial intelligence and machine learning techniques for a variety of purposes (risk prediction, classification, and personalisation) and aimed to address a wide range of mental health needs (depression, stress, and suicide risk). The studies' characteristics also varied in terms of methods, sample size, and study duration. Overall, the studies demonstrated the feasibility of using artificial intelligence to support mental health apps, but the early stages of the research and weaknesses in the study designs highlight the need for more research into artificial intelligence- and machine learning-enabled mental health apps and stronger evidence of their effectiveness. This research is essential and urgent, considering the easy availability of these apps to a large population.
Modeling interacting dynamic networks: II. Systematic study of the statistical properties of cross-links between two networks with preferred degrees
Creators: name: Liu, Wenjia
name: Schmittmann, B.
name: Zia, R. K. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a recent work \cite{LiuJoladSchZia13}, we introduced dynamic networks with preferred degrees and presented simulation and analytic studies of a single, homogeneous system as well as two interacting networks. Here, we extend these studies to a wider range of parameter space, in a more systematic fashion. Though the interaction we introduced seems simple and intuitive, it produced dramatically different behavior in the single- and two-network systems. Specifically, partitioning the single network into two identical sectors, we find the cross-link distribution to be a sharply peaked Gaussian. In stark contrast, we find a very broad and flat plateau in the case of two interacting identical networks. A sound understanding of this phenomenon remains elusive. Exploring more asymmetric interacting networks, we discover a kind of `universal behavior' for systems in which the `introverts' (nodes with smaller preferred degree) are far outnumbered. Remarkably, an approximation scheme for their degree distribution can be formulated, leading to very successful predictions.
description: Accepted by JSTAT
Observational constraints on the maximum energies of accelerated particles in supernova remnants
Creators: name: Suzuki, Hiromasa
name: Bamba, Aya
name: Yamazaki, Ryo
name: Ohira, Yutaka
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Supernova remnants (SNRs) are thought to be the most plausible sources of Galactic cosmic rays. One of the principal questions is whether they are accelerating particles up to the maximum energy of Galactic cosmic rays ($\sim$PeV). In this paper, we summarize our recent studies on gamma-ray-emitting SNRs. We first evaluated the reliability of SNR age estimates to quantitatively discuss time dependence of their acceleration parameters. Then we systematically modeled their gamma-ray spectra to constrain the acceleration parameters. The current maximum energy estimates were found to be well below PeV for most sources. The basic time dependence of the maximum energy assuming the Sedov evolution ($\approx t^{-0.8\pm0.2}$) cannot be explained with the simplest acceleration condition (Bohm limit) and requires shock-ISM (interstellar medium) interaction. The inferred maximum energies during lifetime averaged over the sample can be expressed as $\lesssim 20$ TeV ($t_{\rm M}/\text{1 kyr})^{-0.8}$ with $t_{\rm M}$ being the age at the maximum, which reaches $\sim$PeV only if $t_{\rm M} \lesssim 10$ yr. The maximum energies during lifetime are suggested to have a variety of 1-2 orders of magnitude from object to object on the other hand. This variety will reflect the dependence on environments.
description: 6 pages, 4 figures, proceedings of 7th Heidelberg International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2022)
Quantum tomography meets dynamical systems and bifurcations theory
Creators: name: Goyeneche, D.
name: de la Torre, A. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A powerful tool for studying geometrical problems in Hilbert space is developed. In particular, we study the quantum pure state tomography problem in finite dimensions from the point of view of dynamical systems and bifurcations theory. First, we introduce a generalization of the Hellinger metric for probability distributions which allows us to find a geometrical interpretation of the quantum state tomography problem. Thereafter, we prove that every solution to the state tomography problem is an attractive fixed point of the so-called physical imposition operator. Additionally, we demonstrate that multiple states corresponding to the same experimental data are associated to bifurcations of this operator. Such a kind of bifurcations only occurs when informationally incomplete set of observables are considered. Finally, we prove that the physical imposition operator has a non-contractive Lipschitz constant 2 for the Bures metric. This value of the Lipschitz constant manifests the existence of the quantum tomography problem for pure states.
description: 16 pages, 2 figures. Submitted to Journal of Mathematical Physics
Ribeiro, Júlio Meneses Rodrigues (de colab. com o P. Giovanni B. Brentari, OFM Cap.), Da vida africana à vida religiosa. Ed. Apost. pelo livro e pela liturgia. Vol. de 157 ps. 165x225. Quelimane 1971
Creators: name: Ortiga, Jorge
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)
Galactic Chemical Evolution and solar s-process abundances: dependence on the 13C-pocket structure
Creators: name: Bisterzo, S.
name: Travaglio, C.
name: Gallino, R.
name: Wiescher, M.
name: Käppeler, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the s-process abundances (A > 90) at the epoch of the solar-system formation. AGB yields are computed with an updated neutron capture network and updated initial solar abundances. We confirm our previous results obtained with a Galactic Chemical Evolution (GCE) model: (i) as suggested by the s-process spread observed in disk stars and in presolar meteoritic SiC grains, a weighted average of s-process strengths is needed to reproduce the solar s-distribution of isotopes with A > 130; (ii) an additional contribution (of about 25%) is required in order to represent the solar s-process abundances of isotopes from A = 90 to 130. Furthermore, we investigate the effect of different internal structures of the 13C-pocket, which may affect the efficiency of the 13C(a, n)16O reaction, the major neutron source of the s-process. First, keeping the same 13C profile adopted so far, we modify by a factor of two the mass involved in the pocket; second, we assume a flat 13C profile in the pocket, and we test again the effects of the variation of the mass of the pocket. We find that GCE s-predictions at the epoch of the solar-system formation marginally depend on the size and shape of the 13C-pocket once a different weighted range of 13C-pocket strengths is assumed. We ascertain that, independently of the internal structure of the 13C-pocket, the missing solar-system s-process contribution in the range from A = 90 to 130 remains essentially the same.
description: Accepted for publication in The Astrophysical Journal (5 Figures, 2 Tables)
SHAPE-ID Literature Review query strings for Web of Science and Scopus
Creators: name: Wciślik, Piotr
name: Maryl, Maciej
name: Vienni Baptista, Bianca
name: Schriber, Lucien
Publisher: name: Zenodo
Year: 2020
Subjects: interdisciplinarity
transdisciplinarity
interdisciplinary research
transdisciplinary research
integration
understandings
arts
humanities
social sciences
AHSS
SSH

description: Background and methodology: The document contains query strings which were used to generate bibliographic datasets in Scopus and Web of Science (WoS) databases for the qualitative and quantitative literature review in the framework of the SHAPE-ID project. Given that WoS and Scopus offer homologous search and filtering functionalities, same method was used to query both databases. The method consisted in four steps, each consisting of defining constraints that enabled to filter-down the resources in order to arrive at an optimal data set. STEP 1. First, we created the long list of literature. To do that, we combined project-relevant sets of keywords (Sets A-D) into doubles and triplets using proximity search operators in both databases and searching in title, abstract and keyword fields, according to the following schema: DOUBLES: TRIPLETS: B NEAR/1 A (B NEAR/3 C) NEAR/3 A C NEAR/1 A (D NEAR/3 C) NEAR/3 A D NEAR/1 A (B NEAR/3 D) NEAR/3 A This method enabled us to query the databases in a more precise way, using key-phrases consisting of two interrelated words or “doubles” (e.g. “transdisciplinary approach”) , and three interrelated words or “triplets” (e.g. “interdisciplinary research policy ”), instead of keywords that can appear without specific interrelation (e.g. when using boolean operator AND instead of proximity operator, we would get results even if words “interdisciplinary”, “research” and “policy” appear in random places in the same abstract, title and keywords). STEP 2. Next, within that long list, we looked (again in title, abstract and keywords) for items that either discuss understandings of interdisciplinarity and transdisciplinarity (keyword set E), or relate to factors or indicators of success or failure (sets E and G correlated through proximity search), according to the following schema: E OR (F NEAR/1 G). STEP 3. We further limited the dataset to only those items that have keywords from set A (interdisciplinarity and transdisciplinarity in different variants) in the title - considered as a marker of strong relationship to the subject matter. STEP 4. Finally, we added the he following constraints: Temporal scope: 1990-present Document Language: English Document Type: Articles, Books and Book Chapters, Editorials Description of the file: This is a text file containing keyword strings used to query WoS and Scopus databases.
A nonlinearity in permanent-magnet systems used in watt balances
Creators: name: Li, Shisong
name: Schlamminger, Stephan
name: Pratt, Jon
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Watt balances are used to measure the Planck constant and will be used in the future to realize mass at the kilogram level. They increasingly rely on permanent magnet systems to generate the magnetic flux. It has been known that the weighing current might effect the magnetization state of the permanent magnetic system used in these systems causing a systematic bias that can lead to an error in the result if not accounted for. In this article a simple model explaining the effect of the weighing current on the yoke of the magnet is developed. This model leads to a nonlinear dependence of the magnetic flux density in the gap that is proportional to the squared value of the coil current. The effect arises from changing the reluctance of the yoke by the additional field produced by the coil. Our analysis shows that the effect depends on the width of the air gap, the magnetic flux density in the air gap, and the $BH$ curve of the yoke material. Suggestions to reduce the nonlinear effect are discussed.
description: 16 pages 9 figures. Accepted for publication in metrologia
On the possible mechanism to form the radio emission spectrum of the Crab pulsar
Creators: name: Machabeli, George
name: Chkheidze, Nino
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In the present paper a self-consistent theory, explaining shape of the observed phase-averaged radio spectrum in the frequency range from 100MHz to 10GHz is presented. The radio waves are assumed to be generated near the light cylinder through the cyclotron resonance. The cyclotron instability provides excitement of the electron-positron plasma eigen-waves, which come in radio domain when the resonant particles are the most energetic primary beam electrons. It is widely accepted that the distribution function of relativistic particles is one-dimensional at the pulsar surface. The generated waves react back on the resonant particles causing their diffusion in the perpendicular direction to the magnetic field and violating the one-dimensionality, which switches on the synchrotron radiation process. The synchrotron emission of the beam electrons provides generation of high-energy $γ$-rays simultaneously with the radio emission, that explains the observed pulse phase-coincidence in these energy domains. The theory provides a power-law radio spectrum with the spectral index equal to $3.7$, coming in agreement with the observations.
description: 5 pages, 0 figures
Vários, Des Chrétiens interrogent I’Athéisme, 2/1. L’athéisme dans da philosophie contemporaine. Couranis et penseurs. Ed. Desclée. Vol. de 716 ps. 155x225. Tournai 1970
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1971

description: Theologica, v. 6 n. 4 (1971)