cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strategies for the Design of a Slide-o-Cam Transmission
Creators: name: Chablat, Damien
name: Angeles, Jorge
Publisher: name: arXiv
Year: 2007
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The optimization of the pressure angle in a cam-follower transmission is reported in this paper. This transmission is based on Slide-o-Cam, a cam mechanism with multiple rollers mounted on a common translating follower. The design of Slide-o-Cam, a transmission intended to produce a sliding motion from a turning drive, or vice versa, was reported elsewhere. This transmission provides pure-rolling motion, thereby reducing the friction of rack-and-pinions and linear drives. The pressure angle is a suitable performance index for this transmission because it determines the amount of force transmitted to the load vs. that transmitted to the machine frame. Two alternative design strategies are studied, namely, (i) increase the number of lobes on each cam or (ii) increase the number of cams. This device is intended to replace the current ball-screws in Orthoglide, a three-DOF parallel robot for the production of translational motions, currently under development at Ecole Centrale de Nantes for machining applications.
Singular Potentials in Quantum Mechanics and Ambiguity in the Self-Adjoint Hamiltonian
Creators: name: Fülöp, Tamás
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For a class of singular potentials, including the Coulomb potential (in three and less dimensions) and $V(x) = g/x^2$ with the coefficient $g$ in a certain range ($x$ being a space coordinate in one or more dimensions), the corresponding Schrödinger operator is not automatically self-adjoint on its natural domain. Such operators admit more than one self-adjoint domain, and the spectrum and all physical consequences depend seriously on the self-adjoint version chosen. The article discusses how the self-adjoint domains can be identified in terms of a boundary condition for the asymptotic behaviour of the wave functions around the singularity, and what physical differences emerge for different self-adjoint versions of the Hamiltonian. The paper reviews and interprets known results, with the intention to provide a practical guide for all those interested in how to approach these ambiguous situations.
description: This is a contribution to the Proc. of the 3-rd Microconference "Analytic and Algebraic Methods III"(June 19, 2007, Prague, Czech Republic), published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Strength of Glulam rivet connections under eccentric loading
Creators: name: Karacabeyli, Erol
Publisher: name: University of British Columbia
Year: 2010

description: Theoretical and experimental studies of the strength of Glulam rivet connections under eccentric loading are presented. Two failure modes are studied: 1. Rivet yielding in bending with simultaneous bearing failure of the wood under the rivet's shank. 2. Wood failure around the rivet cluster. A finite element stress analysis of the connection is carried out, and the effects of different parameters on strength and failure modes are presented. Experimental results on full-size test specimens are used to compare tests and theoretical failure loads. Finally, a design procedure is proposed.
Coulomb dissociation of 9Li and the rate of the 8Li(n,g)9Li reaction
Creators: name: Banerjee, P.
name: Chatterjee, R.
name: Shyam, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We calculate the Coulomb dissociation of 9Li on Pb and U targets at 28.5 MeV/A beam energy within a finite range distorted wave Born approximation formalism of the breakup reactions. Invoking the principle of detailed balance, these cross sections are used to determine the excitation function and subsequently the rate of the radiative capture reaction 8Li(n,g)9Li at astrophysical energies. Our method is free from the uncertainties associated with the multipole strength distributions of the 9Li nucleus. The rate of this reaction at a temperature of 10^9K is found to be about 2900 cm^3 mole^{-1} s^{-1}.
description: 13 pages Revtex, 2 figures, title and abstract changed on referee's suggestions, figures modified and discussions extended, results remain the same; version to appear in Phys. Rev. C
Detection of the spectral binary (SB2) nature of BD-6^o1178
Creators: name: Klochkova, V. G.
name: Chentsov, E. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: BD-6^o1178 identified with the infrared source IRAS05238-0626 is shown for the first time to be a spectroscopic binary (SB2) by analyzing the high-resolution spectra taken with the NES echelle spectrograph of the 6-m telescope. The components of the binary have close spectral types and luminosity classes: F5IV-III and F3V. The heliocentric radial velocities are measured for both components at four observing moments in 2004-2005. Both stars have close rotation velocities, which are equal to 24 and 19km/s. We do not confirm the classification of BD-6^o1178 as a supergiant in the transition stage of becoming a planetary nebula. BD-6^o1178 probably is a young pre-MS stars. It is possibly a member of the 1c subgroup of the OriOB1 association.
description: 13 pages, 1 table, 4 figures
Regions of Feasible Point-to-Point Trajectories in the Cartesian Workspace of Fully-Parallel Manipulators
Creators: name: Chablat, Damien
name: Wenger, Philippe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The goal of this paper is to define the n-connected regions in the Cartesian workspace of fully-parallel manipulators, i.e. the maximal regions where it is possible to execute point-to-point motions. The manipulators considered in this study may have multiple direct and inverse kinematic solutions. The N-connected regions are characterized by projection, onto the Cartesian workspace, of the connected components of the reachable configuration space defined in the Cartesian product of the Cartesian space by the joint space. Generalized octree models are used for the construction of all spaces. This study is illustrated with a simple planar fully-parallel manipulator.
Additional file 1 of Factors associated to the presence of headache in patients with influenza infection and its consequences: a 2010–2020 surveillance-based study
Creators: name: García-Azorín, David
name: Santana-López, Laura
name: Lozano-Alonso, José Eugenio
name: Ordax-Díez, Ana
name: Vega-Alonso, Tomas
name: Macias Saint-Gerons, Diego
name: González-Osorio, Yésica
name: Rojo-Rello, Silvia
name: Eiros, José M.
name: Sánchez-Martínez, Javier
name: Sierra-Mencía, Álvaro
name: Recio-García, Andrea
name: Martín-Toribio, Alejandro
name: Sanz-Muñoz, Ivan
name: Guerrero-Peral, Ángel Luis
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Supplementary table 1. Surveyed population per age-group. Supplementary table 2. Number of cases per season during the entire study period.
Peptide fragments of bradykinin show unexpected biological activity not mediated by B1 or B2 receptors
Creators: name: Verano-Braga, Thiago
Publisher: name: figshare
Year: 2021
Subjects: subject: 111603 Systems Physiology
subject: FOS: Basic medicine

description: Data associated with the manuscript "Peptide fragments of bradykinin show unexpected biological activity not mediated by B1 or B2 receptors".
The following data are available:
1) "Blood Pressure Data 1": Cardiovascular parameters (heart rate, pulsatile arterial pressure, mean arterial pressure) measured on conscious rats (Wistar) after intra-venous (folder "Femoral") or intra-arterial (folder "Carotida") administration of BK-(1-9), BK-(1-7) or BK-(1-5). Use the AcqKnowledge software (https://www.biopac.com/product/acqknowledge-software/) to visualize the data.
2) "Blood Pressure Data 2": Dose-response cardiovascular parameters (heart rate, pulsatile arterial pressure, mean arterial pressure) measured on conscious rats (Wistar) after intra-venous administration of BK-(1-9), BK-(1-7) or BK-(1-5). Use the AcqKnowledge software (https://www.biopac.com/product/acqknowledge-software/) to visualize the data.

3) "Confocal Microscopy": photos obtained by confocal microscopy. Files with ND2 extension should be visualized using the ImageJ software (https://imagej.nih.gov/ij/download.html).
4) "Vascular Reactivity": data acquired on aortic ring preparation due to BK-(1-9) or its fragments treatment. Use the LabChart software (https://www.adinstruments.com/products/labchart) to visualize the data.
5) "MRM data": mass spectrometry data acquired using LC-MRM (xevo TQS MS). To visualize the MS data, use the MassLynx software (https://www.waters.com/waters/en_US/MassLynx-MS-Software/nav.htm?cid=513662&lset=1&locale=en_US&changedCountry=Y).
Cu Modified SrTiO3 Perovskites Toward Enhanced Water Gas Shift Catalysis: A Combined Experimental and Computational Study
Creators: name: Coletta, Vitor C.
name: Goncalves, Renato V.
name: Bernardi, Maria I. B.
name: Hanaor, Dorian A. H.
name: Assadi, M. Hussein N.
name: Marcos, Francielle C. F.
name: Nogueira, Francisco G. E.
name: Assaf, Elisabete M.
name: Mastelaro, Valmor R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The water gas shift reaction (WGS) is important and widely applied in the production of H2. Cu modified perovskites are promising catalysts for WGS reactions in hydrogen generation. However, the structure-dependent stability and reaction pathways of such materials remain unclear. Herein, we report catalytically active Cu modified SrTiO3 (nominally SrTi1-xCuxO3) prepared by a modified polymeric precursor method. Microstructural analysis revealed a partially segregated CuO phase in the as-prepared materials. Operando X-ray diffraction and absorption spectroscopy showed the reduction of CuO into a stable metallic phase under conditions of WGS reactions for all compositions. Among the characterized materials, the x = 0.20 composition showed the highest turnover frequency, lowest activation energy, and the highest WGS rate at 300C. According to density functional calculations, the formation of CuO is energetically less favorable compared with SrTiO3, explaining why the segregated CuO phase on the SrTiO3 surface is reduced to Cu during the catalytic reaction, while SrTiO3 remains. For x = 0.20, the size of the segregated CuO phase is optimum for facilitating the catalytic reaction. In contrast, a higher Cu content (x = 0.3) results in an aggregation of smaller CuO particles, resulting in fewer surface active sites and a net decrease in catalytic performance.
Peptide fragments of bradykinin show unexpected biological activity not mediated by B1 or B2 receptors
Creators: name: Verano-Braga, Thiago
Publisher: name: figshare
Year: 2021
Subjects: subject: 111603 Systems Physiology
subject: FOS: Basic medicine

description: Data associated with the manuscript "Peptide fragments of bradykinin show unexpected biological activity not mediated by B1 or B2 receptors". Corresponding author: Thiago Verano-Braga (orcid: 0000-0002-7083-2588).
The following data are available:
1) "Blood Pressure Data 1" folder: Cardiovascular parameters (heart rate, pulsatile arterial pressure, mean arterial pressure) measured on conscious rats (Wistar) after intra-venous (folder "Femoral") or intra-arterial (folder "Carotida") administration of BK-(1-9), BK-(1-7) or BK-(1-5). Use the AcqKnowledge software (https://www.biopac.com/product/acqknowledge-software/) to visualize the data.
2) "Confocal Microscopy" folder: photos obtained by confocal microscopy. Files with ND2 extension should be visualized using the ImageJ software (https://imagej.nih.gov/ij/download.html).
3) "Vascular Reactivity" folder: data acquired on aortic ring preparation due to BK-(1-9) or its fragments treatment. Use the LabChart software (https://www.adinstruments.com/products/labchart) to visualize the data.
Studio geochimico ambientale e identificazione del grado di inquinamento da metalli pesanti nei suoli dell’area Domizio - Flegreo
Creators: name: Grezzi, Giuseppe
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: The Littoral Domizio – Flegreo located along the north coastal zone of the Campania region (Italy) extends for about 855 Km2. We have analyzed soils for their content of heavy metals in order to study the relative impact of natural and anthropogenic sources. We collected 179 soil surface samples (5-15 cm depth) and produced maps showing the distribution of heavy metals in the soils. The soils point to the influence of two volcanic areas (Campi Flegrei, and M. Roccamonfina): the highest contents of Fe, U, Th, V, Ba, Ti, Al, Tl and Ga are mainly found in these two areas. In some cases, the contents exceed the maximum allowable values as stated by Italian law Dlgs 152/2006.The high values of such heavy metals are potentially dangerous for human health. Pb and As, for example, have very high concentrations: 15% of the 179 sites exceed the maximum allowed for residential areas (Pb=100 mg/Kg). The area between Castelvolturno and Mondragone has Pb contents between 100-328 mg/Kg; similar contents are found in samples from Sessa Aurunca and Qualiano. Anthropogenic sources related to automobile traffic and human activities (industrial lead) are likely the main causes for the Pb concentrations higher than 100 mg/Kg. The maximum content of As in soils for non-residential areas is 50 mg/Kg, and this limit is exceeded in the Francolise agricultural area (65 mg/Kg), suggesting that anthropogenic sources may have influenced the soils in areas used for vineyards. Also, near Francolise, Villa Literno, Giugliano, Quarto, and Bacoli, the values of As are higher than the residential limit (20 mg/Kg). Lead isotope compositions of soils known to contain anomalously high values of heavy metals were measured in order to determine the sources of the lead and, by inference, sources of arsenic. We have also collected groundwater samples from the same area. Acid-leach compositions of the soils represent lead that is adsorbed to mineral surfaces (anthropogenic component?), whereas residue compositions may reflect bedrock. Labile lead (acid-leach fractions) from the soils shows a range in compositions of about 207Pb/206Pb=0.8275 to 0.8486, 208Pb/206Pb=2.0488 to 2.0873; values vary and decrease with depth. The range in lead isotope ratios in the soil profiles is generally consistent with multiple sources that include anthropogenic lead. Surface samples from Giugliano (urban area) have Pb isotopic values closer to the composition of fuel and industrial lead used in Italy. Surface samples from Mondragone and Cancello Arnone (sub-rural area) have the lowest Pb isotopic ratios and suggest that the geogenic or natural component characterizes the lead isotopic trend in these areas and argue against a major contribution of Pb from human activities.
Regulation of the NF-kappaB alternative pathway: implication for B cell transformation
Creators: name: Lavorgna, Alfonso
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: The NF-B2 gene is recurrently mutated and over-expressed in human lymphoid malignancies. However, a casual relationship between NF-B2 mutation and lymphomagenesis has not been established. It is also unclear how the mutation may lead to lymphoid malignancies. Recent studies suggest that nuclear factor B inducing kinase (NIK) is suppressed through constitutive proteasome-mediated degradation regulated by TRAF3, thus preventing processing of the NF-B2 precursor protein p100 to release p52. Here we demonstrate that BAFF Receptor, a member of the TNF Receptor family, interact with TRAF1, a member of TRAF family. This interaction activates NF-B2 via increased degradation of TRAF3 and stabilization of NIK. Indeed, interference of TRAF1 in lymphoma B cell line downregulates p100 processing and lead to decreased survival of B cells.
An Improved Semi-Analytical Spherical Collapse Model for Non-linear Density Evolution
Creators: name: Shaw, Douglas J.
name: Mota, David F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive a semi-analytical extension of the spherical collapse model of structure formation that takes account of the effects of deviations from spherical symmetry and shell crossing which are important in the non-linear regime. Our model is designed so that it predicts a relation between the peculiar velocity and density contrast that agrees with the results of N-body simulations in the region where such a comparison can sensibly be made. Prior to turnaround, when the unmodified spherical collapse model is expect to be a good approximation, the predictions of the two models coincide almost exactly. The effects of a late time dominating dark energy component are also taken into account. The improved spherical collapse model is a useful tool when one requires a good approximation not just to the evolution of the density contrast but also its trajectory. Moreover, the analytical fitting formulae presented is simple enough to be used anywhere where the standard spherical collapse might be used but with the advantage that it includes a realistic model of the effects of virialisation.
description: 6 pages, 3 figures. Matches the version in print at Astrophys. J
Finite deflection dynamic response of axially restrained beams
Creators: name: Schubak, Robert Brian
Publisher: name: University of British Columbia
Year: 2010

description: The deformation response of symmetrically supported, axially restrained beams subjected to uniformly distributed pulse loads is studied herein, leading to the development of an analytical procedure to predict the character and magnitude of such response. The procedure is valid for beams of any singly symmetric or doubly symmetric cross-section, and is based upon the assumption that the beam material can be approximated as behaving in a rigid-perfectly plastic manner. The governing equations of motion are derived from variational statements consisting of the principle of virtual work and d'Alembert's principle, and include the effects of finite geometry changes. From the static analysis of axially restrained beams it is found that the yield curve of a beam section may be replaced by a linear approximation thereof to obtain a good estimate of the beam's load capacity. Incorporating the linear yield curve approximation in a dynamic analysis of an axially restrained beam results in the uncoupling of the response into two distinct phases — an initial small deflection phase in which the beam retains bending resistance and deforms as a mechanism formed by plastic hinges, and a subsequent large deflection phase in which the beam has no bending resistance and deforms as a plastic string. The results of such an analysis for a rectangular beam subjected to a rectangular load pulse compare well with the results of a previous solution which used the true quadratic yield curve. The linear yield curve approximation further results in linear differential equations of motion, and the response to load pulses of general load-time history may be solved in closed form. Blast-type pulses of varying shape are found to induce significantly different permanent deflections in a beam than a rectangular pulse. On the other hand, the effect of finite rise time of the pulse's load intensity is found to be small if the the rise time is less than about twenty to thirty percent of the pulse duration. A procedure developed by CK. Youngdahl is used to obtain rough estimates of the permanent deformation response by converting a pulse of triangular shape to an "effective" rectangular pulse. These estimates compare well with results obtained by the complete analysis of a triangular pulse developed herein. The use of Youngdahl's procedure combined with the analysis of a rectangular pulse developed herein can provide a quick, simple solution to the permanent deformation of a dynamically loaded beam which is amenable to hand computation.
The fine intersection problem for Steiner triple systems
Creators: name: Chee, Yeow Meng
name: Ling, Alan C. H.
name: Shen, Hao
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B05

description: The intersection of two Steiner triple systems (X,A) and (X,B) is the set A intersect B. The fine intersection problem for Steiner triple systems is to determine for each v, the set I(v), consisting of all possible pairs (m,n) such that there exist two Steiner triple systems of order v whose intersection has n blocks over m points. We show that for v = 1 or 3 (mod 6), |I(v)| = Omega(v^3), where previous results only imply that |I(v)| = Omega(v^2).
description: 9 pages
The Design of Parallel Kinematic Machine Tools Using Kinetostatic Performance Criteria
Creators: name: Majou, Félix
name: Wenger, Philippe
name: Chablat, Damien
Publisher: name: arXiv
Year: 2007
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Most industrial machine tools have a serial kinematic architecture, which means that each axis has to carry the following one, including its actuators and joints. High Speed Machining highlights some drawbacks of such architectures: heavy moving parts require from the machine structure high stiffness to limit bending problems that lower the machine accuracy, and limit the dynamic performances of the feed axes. That is why PKMs attract more and more researchers and companies, because they are claimed to offer several advantages over their serial counterparts, like high structural rigidity and high dynamic capacities. Indeed, the parallel kinematic arrangement of the links provides higher stiffness and lower moving masses that reduce inertia effects. Thus, PKMs have better dynamic performances. However, the design of a parallel kinematic machine tool (PKMT) is a hard task that requires further research studies before wide industrial use can be expected. Many criteria need to be taken into account in the design of a PKMT. We pay special attention to the description of kinetostatic criteria that rely on the conditioning of the Jacobian matrix of the mechanism. The organisation of this paper is as follows: next section introduces general remarks about PKMs, then is explained why PKMs can be interesting alternative machine tool designs. Then are presented existing PKMTs. An application to the design of a small-scale machine tool prototype developed at IRCCyN is presented at the end of this paper.
Opto-mechanical effects in nematic and cholesteric liquid crystals
Creators: name: Setaro, Antonio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: Il lavoro si inserisce in un programma di ricerca teso a mettere in evidenza alcuni fenomeni termodinamici di non equilibrio proibiti per ragioni di simmetria nei materiali normali, ma permessi nei materiali chirali. Questi fenomeni coinvolgono l’accoppiamento tra una forza termodinamica di tipo polare e un flusso di tipo assiale. La relativa costante di accoppiamento è quindi uno pseudo-scalare. Si tratta, in generale, di effetti molto deboli e difficili da rivelare, poiché il grado di chiralità dei materiali formati da molecole chirali è, in genere, molto piccolo. I cristalli liquidi colesterici, invece, possiedono una chiralità di tipo strutturale, che è molti ordini di grandezza più grande della chiralità di origine molecolare e sono quindi materiali ideali per l’osservazione sperimentale di tali effetti. Il più noto tra gli effetti termodinamici legati alla chiralità dei colesterici è l’effetto Lehman, che è l’oggetto di studio di questo lavoro. L’effetto consiste nella rotazione della struttura colesterica indotta dall’applicazione di un gradiente di temperatura o di un campo elettrostatico.  Sebbene il fenomeno sia stato osservato al microscopio da Lehman fin dal 1900, ogni tentativo di misura quantitativa è finora fallito, per via di effetti concomitanti, come l’effetto flesso-elettrico, legati al difficile controllo della geometria sperimentale (usualmente micro-gocce di colesterico in ambiente isotropo). L’idea di base del lavoro è quello di utilizzare un fascio di luce focalizzato per creare la “gocciolina” colesterica in un ambiente nematico che abbia una simmetria cilindrica attorno alla direzione della velocità angolare di rotazione indotta. La luce svolge un ruolo puramente ausiliario, che permette, però, il controllo accurato della geometria del profilo colesterico, in modo da poter escludere gli effetti concorrenti.
The effect of quantum memory on quantum games
Creators: name: Ramzan, M.
name: Nawaz, Ahmad
name: Toor, A. H.
name: Khan, M. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study quantum games with correlated noise through a generalized quantization scheme. We investigate the effects of memory on quantum games, such as Prisoner's Dilemma, Battle of the Sexes and Chicken, through three prototype quantum-correlated channels. It is shown that the quantum player enjoys an advantage over the classical player for all nine cases considered in this paper for the maximally entangled case. However, the quantum player can also outperform the classical player for subsequent cases that can be noted in the case of the Battle of the Sexes game. It can be seen that the Nash equilibria do not change for all the three games under the effect of memory.
description: 26 pages, 7 ps figures
Lineshape of the Lambda(1405) Hyperon Measured Through its Sigma0 pion0 Decay
Creators: name: Zychor, I.
name: Büscher, M.
name: Hartmann, M.
name: Kacharava, A.
name: Keshelashvili, I.
name: Khoukaz, A.
name: Kleber, V.
name: Koptev, V.
name: Maeda, Y.
name: Mersmann, T.
name: Mikirtychiants, S.
name: Schleichert, R.
name: Ströher, H.
name: Valdau, Y.
name: Wilkin, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The pp -> p K+ Y0 reaction has been studied for hyperon masses m(Y0)<1540 MeV/c2 at COSY-Juelich by using a 3.65 GeV/c circulating proton beam incident on an internal hydrogen target. Final states comprising two protons, one positively charged kaon and one negatively charged pion have been identified with the ANKE spectrometer. Such configurations are sensitive to the production of the ground state Lambda and Sigma0 hyperons as well as the Sigma0(1385) and Lambda(1405) resonances. Applying invariant- and missing-mass techniques, the two overlapping excited states could be well separated, though with limited statistics. The shape and position of the Lambda(1405) distribution, reconstructed cleanly in the Sigma0 pion0 channel, are similar to those found from other decay modes and there is no obvious mass shift. This finding constitutes a challenging test for models that predict Lambda(1405) to be a two-state resonance.
description: 10 pages, 4 figures, accepted for publication in Phys. Lett. B
Self-trapping of Bose-Einstein condensates expanding into shallow optical lattices
Creators: name: Rosenkranz, M.
name: Jaksch, D.
name: Lim, F. Y.
name: Bao, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We observe a sudden breakdown of the transport of a strongly repulsive Bose-Einstein condensate through a shallow optical lattice of finite width. We are able to attribute this behavior to the development of a self-trapped state by using accurate numerical methods and an analytical description in terms of nonlinear Bloch waves. The dependence of the breakdown on the lattice depth and the interaction strength is investigated. We show that it is possible to prohibit the self-trapping by applying a constant offset potential to the lattice region. Furthermore, we observe the disappearance of the self-trapped state after a finite time as a result of the revived expansion of the condensate through the lattice. This revived expansion is due to the finite width of the lattice.
description: 7 pages, 5 figures, RevTeX4. Published version. Changed title, minor clarifications, added two references, also added arXiv ids for most references
Additional file 1 of Prediction of emergency department revisits among child and youth mental health outpatients using deep learning techniques
Creators: name: Saggu, Simran
name: Daneshvar, Hirad
name: Samavi, Reza
name: Pires, Paulo
name: Sassi, Roberto B.
name: Doyle, Thomas E.
name: Zhao, Judy
name: Mauluddin, Ahmad
name: Duncan, Laura
Publisher: name: figshare
Year: 2024
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 1.
MamoStat: Idea description for solving Open Data Challenge on "Better availability of medical devices"
Creators: name: Popović, Nenad B.
name: Miljković, Nadica
name: Nikolić, Dragica
name: Zrnić, Nenad
name: Timotijević, Đurđa
name: Antić, Milan
Publisher: name: Zenodo
Year: 2019
Subjects: open data
data visualization
medical devices
idea description
project proposal
breast cancer screening

description: United Nations Development Programme (UNDP) in partnership with Office for IT and e-Government announced Open Data Challenge in 2019 within the project "Open data – open possibilities". More info is available on http://www.rs.undp.org/content/serbia/en/home/presscenter/articles/2018/izazov-otvorenih-podataka.html. The idea description for MamoStat application for solving the Open Data Challenge titled "Better availability of medical devices" based on the data of the Agency for Medicines and Medical Devices and Public Health Institute of Serbia “Dr Milan Jovanović Batut”, presented in this document entered challenge finals (it was part of top three solutions) in 2019. MamoStat application served as an inspiration for the project on master course TOBS at the University of Belgrade - School of Electrical Engineering. The successfully solved project assignment is available on Zenodo: Gavrović, Đurđe. (2019, October 2). Projektni zadatak: Aplikacija za vizuelizaciju, pregled i pretragu stanja radiološke opreme u Srbiji. Zenodo. http://doi.org/10.5281/zenodo.3470124.
description: This document contains both Serbian and English versions of Idea description and Pitch presentation (only in Serbian) prepared for the finals.
Milky Way Kinematics: Measurements at the Subcentral Point of the Fourth Quadrant
Creators: name: McClure-Griffiths, N. M.
name: Dickey, John M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use atomic hydrogen (HI) data from the Southern Galactic Plane Survey to study the kinematics of the fourth quadrant of the Milky Way. By measuring the terminal velocity as a function of longitude throughout the fourth Galactic quadrant we have derived the most densely sampled rotation curve available for the Milky Way between 3 < R < 8 kpc. We determine a new joint rotation curve fit for the first and fourth quadrants, which can be used for kinematic distances interior to the Solar circle. From our data we place new limits on the peak to peak variation of streaming motions in the fourth quadrant to be ~10 km/s. We show that the shape of the average HI profile beyond the terminal velocity is consistent with gas of three velocity dispersions, a cold component with $Δv=6.3$ km/s, a warmer component with $Δv=12.3$ km/s and a fast component with $Δv=25.9$ km/s. Examining the widths with Galactic radius we find that the narrowest two components show little variation with radius and their small scale fluctuations track each other very well, suggesting that they share the same cloud-to-cloud motions. The width of the widest component is constant until R<4 kpc, where it increases sharply.
description: 36 pages, 10 figures, accepted to ApJ. Full electronic version of table 1 available at ftp://ftp.atnf.csiro.au/pub/people/nmcclure/papers/velocity_tab1.tex
Simulations and Experiments on Polarisation Squeezing in Optical Fibre
Creators: name: Corney, Joel F.
name: Heersink, Joel
name: Dong, Ruifang
name: Josse, Vincent
name: Drummond, Peter D.
name: Leuchs, Gerd
name: Andersen, Ulrik L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate polarisation squeezing of ultrashort pulses in optical fibre, over a wide range of input energies and fibre lengths. Comparisons are made between experimental data and quantum dynamical simulations, to find good quantitative agreement. The numerical calculations, performed using both truncated Wigner and exact $+P$ phase-space methods, include nonlinear and stochastic Raman effects, through coupling to phonons variables. The simulations reveal that excess phase noise, such as from depolarising GAWBS, affects squeezing at low input energies, while Raman effects cause a marked deterioration of squeezing at higher energies and longer fibre lengths. The optimum fibre length for maximum squeezing is also calculated.
description: 19 pages, lots of figures
Induced scattering of short radio pulses
Creators: name: Lyubarsky, Yuri
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Effect of the induced Compton and Raman scattering on short, bright radio pulses is investigated. It is shown that when a single pulse propagates through the scattering medium, the effective optical depth is determined by the duration of the pulse but not by the scale of the medium. The induced scattering could hinder propagation of the radio pulse only if close enough to the source a dense enough plasma is presented. The induced scattering within the relativistically moving source places lower limits on the Lorentz factor of the source. The results are applied to the recently discovered short extragalactic radio pulse.
description: submitted to ApJ
Discovery of Four Gravitationally Lensed Quasars from the Sloan Digital Sky Survey
Creators: name: Oguri, Masamune
name: Inada, Naohisa
name: Clocchiatti, Alejandro
name: Kayo, Issha
name: Shin, Min-Su
name: Hennawi, Joseph F.
name: Strauss, Michael A.
name: Morokuma, Tomoki
name: Schneider, Donald P.
name: York, Donald G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the discovery of four gravitationally lensed quasars selected from the spectroscopic quasar catalog of the Sloan Digital Sky Survey. We describe imaging and spectroscopic follow-up observations that support the lensing interpretation of the following four quasars: SDSS J0832+0404 (image separation θ=1.98", source redshift z_s=1.115, lens redshift z_l=0.659); SDSS J1216+3529 (θ=1.49", z_s=2.012); SDSS J1322+1052 (θ=2.00", z_s=1.716); and SDSS J1524+4409 (θ=1.67", z_s=1.210, z_l=0.320). Each system has two lensed images. We find that the fainter image component of SDSS J0832+0404 is significantly redder than the brighter component, perhaps because of differential reddening by the lensing galaxy. The lens potential of SDSS J1216+3529 might be complicated by the presence of a secondary galaxy near the main lensing galaxy.
description: 25 pages, 10 figures, 6 tables, accepted for publication in AJ
Data from: Phylogenetic conflict between species tree and maternally inherited gene trees in a clade of Emberiza buntings (Aves: Emberizidae)
Creators: name: Zhang, Dezhi
Publisher: name: Zenodo
Year: 2023
Subjects: Emberiza
phylogenetic conflict

description: Different genomic regions may reflect conflicting phylogenetic topologies on account of incomplete lineage sorting and/or gene flow. Genomic data are necessary to reconstruct the true species tree and explore potential causes of phylogenetic conflict. Here, we investigate the phylogenetic relationships of four Emberiza species (Aves: Emberizidae) and discuss the potential causes of the observed mitochondrial non-monophyly of Emberiza godlewskii (Godlewski's bunting) using phylogenomic analyses based on whole genome resequencing data from 41 birds. Phylogenetic analyses based on both the whole mitochondrial genome and ~39 kilobases from the non-recombining W chromosome reveal that the northern and southern populations of E. godlewskii are each sister to E. cioides and E. cia, respectively. In contrast, phylogenetic analysis based on genome-wide data support the monophyly of E. godlewskii with the following tree topology: (((E. godlewskii, E. cia), E. cioides), E. jankowskii). Using D-statistics, we detected multiple gene flow events among different lineages, indicating pervasive introgressive hybridization within this clade. Introgression from an unsampled lineage that is sister to E. cioides or introgression from an unsampled mitochondrial + W chromosomal lineage of E. cioides into northern E. godlewskii may explain the phylogenetic conflict between the species tree estimated from genome-wide data and mtDNA/W trees. These results underscore the importance of using genomic data for phylogenetic reconstruction and species delimitation.
description: Funding provided by: National Natural Science Foundation of ChinaCrossref Funder Registry ID: https://ror.org/01h0zpd94Award Number:
description: Dataset and supporting information from the manuscript of Phylogenetic conflict between species tree and maternally inherited gene trees in a clade of Emberiza buntings (Aves: Emberizidae).
Relativistic stars in f(R) gravity, and absence thereof
Creators: name: Kobayashi, Tsutomu
name: Maeda, Kei-ichi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Several f(R) modified gravity models have been proposed which realize the correct cosmological evolution and satisfy solar system and laboratory tests. Although nonrelativistic stellar configurations can be constructed, we argue that relativistic stars cannot be present in such f(R) theories. This problem appears due to the dynamics of the effective scalar degree of freedom in the strong gravity regime. Our claim thus raises doubts on the viability of f(R) models.
description: 9 pages, 7 figures, v2: references added, minor corrections, version accepted for publication in PRD
Flood risk and hazard assessment on Lulu Island
Creators: name: Jacobs, Paul Arthur
Publisher: name: University of British Columbia
Year: 2010

description: Lulu Island contains most of the Municipality of Richmond. Richmond is a growing community with 100,000 population located south of the city of Vancouver in the Fraser River estuary. The flood hazard from both the sea and the Fraser River are well known and to protect against it, an extensive diking system has been built. Despite this diking system a significant residual flood hazard has been created by the extensive development on the island. In addition, concerns have been raised about potential flooding from earthquake damage and a predicted rise in sea level due to global warming. This thesis analyses the extent of the flood hazard from various sources. New techniques of risk analysis and findings on risk perception are used to examine the flood risk. The role of contingency planning for flood control in conjunction with dikes is examined. Finally, the role of flood insurance is discussed as a method of providing information about flood risk levels to floodplain users. Conclusions are drawn about the adequacy of current flood control measures and recommendations are made to improve them.
Strategies for Optimize Off-Lattice Aggregate Simulations
Creators: name: Alves, S. G.
name: Ferreira, S. C.
name: Martins, M. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We review some computer algorithms for the simulation of off-lattice clusters grown from a seed, with emphasis on the diffusion-limited aggregation, ballistic aggregation and Eden models. Only those methods which can be immediately extended to distinct off-lattice aggregation processes are discussed. The computer efficiencies of the distinct algorithms are compared.
description: 6 pages, 7 figures and 3 tables; published at Brazilian Journal of Physics 38, march, 2008 (http://www.sbfisica.org.br/bjp/files/v38_81.pdf)
Early-Type (E, S0) Galaxies in the Catalog of Isolated Galaxies (KIG)
Creators: name: Karachentseva, V. E.
name: Karachentsev, I. D.
name: Melnyk, O. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use the data of modern digital sky surveys (PanSTARRS-1, SDSS) combined with HI-line and far ultraviolet (GALEX) surveys to reclassify 165 early-type galaxies from the Catalog of Isolated Galaxies (KIG). As a result, the number of E- and S0-type galaxies reduced to 91. Our search for companions of early-type KIG galaxies revealed 90 companions around 45 host galaxies with line-of-sight velocity differences $|dV| < 500$ km s$^{-1}$ and linear projected separations $R_{p} < 750$ kpc. We found no appreciable differences in either integrated luminosity or color of galaxies associated with the presence or absence of close neighbors. We found a characteristic orbital mass-to-luminosity ratio for 26 systems "KIG galaxy--companion" to be $M_{\odot}/L_{K} = (74\pm26) M_{\odot}/L_{\odot}$, which is consistent with the $M_{\rm orb}/L_{K}$ estimates for early-type isolated galaxies in the 2MIG catalog ($63 M_{\odot}/L_{\odot}$), and also with the $M_{\rm orb}/L_{K}$ estimates for E- and S0-type galaxies in the Local Volume: $38\pm22$ (NGC 3115), $82\pm26$ (NGC 5128), $65\pm20$ (NGC 4594). The high halo-to-stellar mass ratio for E- and S0-type galaxies compared to the average $(20\pm3) M_{\odot}/L_{\odot}$ ratio for bulgeless spiral galaxies is indicative of a significant difference between the dynamic evolution of early- and late-type galaxies.
description: Accepted to Asrophysical Bulletin, 16 pages, 5 figures, 4 tables
XAI Handbook: Towards a Unified Framework for Explainable AI
Creators: name: Palacio, Sebastian
name: Lucieri, Adriano
name: Munir, Mohsin
name: Hees, Jörn
name: Ahmed, Sheraz
name: Dengel, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The field of explainable AI (XAI) has quickly become a thriving and prolific community. However, a silent, recurrent and acknowledged issue in this area is the lack of consensus regarding its terminology. In particular, each new contribution seems to rely on its own (and often intuitive) version of terms like "explanation" and "interpretation". Such disarray encumbers the consolidation of advances in the field towards the fulfillment of scientific and regulatory demands e.g., when comparing methods or establishing their compliance with respect to biases and fairness constraints. We propose a theoretical framework that not only provides concrete definitions for these terms, but it also outlines all steps necessary to produce explanations and interpretations. The framework also allows for existing contributions to be re-contextualized such that their scope can be measured, thus making them comparable to other methods. We show that this framework is compliant with desiderata on explanations, on interpretability and on evaluation metrics. We present a use-case showing how the framework can be used to compare LIME, SHAP and MDNet, establishing their advantages and shortcomings. Finally, we discuss relevant trends in XAI as well as recommendations for future work, all from the standpoint of our framework.
Decay of massive hair on brane black hole
Creators: name: Rogatko, Marek
name: Szyplowska, Agnieszka
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study analytically the intermediate and late-time behaviour of the massive scalar field in the background of static spherically symmetric brane black hole solutions. The intermediate behavoiur of the scalar field reveals the dependence on the field's parameter mass as well as the multiple moment l, while the late-time behaviour has the power-law decay rate independent of those factors.
description: 7 pages, RevTex, to be published in Phys.Rev.D15
Scattering of metastable lumps in a model with a false vacuum
Creators: name: Lima, Fred C.
name: Simas, Fabiano C.
name: Nobrega, K. Z.
name: Gomes, Adalto R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we consider the scalar field model with a false vacuum proposed by A. T. Avelar, D. Bazeia, L. Losano and R. Menezes, Eur. Phys. J. C 55, 133-143 (2008). The model depends on a parameter $s>0$. The model has unstable nontopological lump solutions with a bell shape for small $s$, acquiring a flat plateau around the maximum for large $s$. For $s\to\infty$ the $ϕ^4$ model is recovered. We show that for $s\gtrsim 2$ the lump is metastable with the only negative mode very close to zero. Metastable lumps can propagate and survive long enough to produce dynamical effects. Due to their simplicity, they can be an alternative to the procedure of stabilization which requires, for instance, a complex scalar field to construct nontopological solitons. We study lump-lump collisions in this model, describing the main characteristics of the scattering products at their dependence on $s$ and the initial velocity modulus of each lump.
Stakeholder consultation on the future of scholarly publishing and scholarly communication
Creators: name: MCAA Policy Working Group
Publisher: name: Zenodo
Year: 2019

description: Invited contribution from the Marie Curie Alumni Association on the European Commission’s Expert Group report on the Future of scholarly publishing and scholarly communication. Background In January 2019, the European Commission published the “Future of scholarly publishing and scholarly communication”, a report by the H2020 Commission Expert Group on the Future of scholarly publishing and scholarly communication. The report examines the current system – with its strengths and weaknesses, the actors involved in it and proposes a vision for the future. A select number of stakeholders mainly participating in the Open Science Policy Platform (OSPP), and a few more organizations that complemented the configuration of OSPP, were invited to participate in the consultation. Additional organizations offered to participate in the consultation themselves (Annex A, list of consulted organizations). The consultation was sent to 32 organizations, 17 of which responded, representing research institutions, academic/learned societies, early career researcher associations, funders, and publishers. The consultation lasted between February and May 2019. The consultation report (including this contribution from the Marie Curie Alumni Association) was published by the European Commission on 2019-11-01 and is available here: https://data.europa.eu/euodp/en/data/dataset/future-of-scholarly-publishing-and-scholarly-communication-stakeholder-responses For more from the Marie Curie Alumni Association, please see: https://zenodo.org/communities/mcaa