cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chemical abundances in the dwarf galaxy NGC 4163 based on the nebular and auroral emission lines
Creators: name: Zinchenko, I. A.
name: Pilyugin, L. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We constructed an oxygen abundance map and N/O ratio map of the unusually low excitation dwarf irregular galaxy NGC 4163 based on publicly available spectroscopy obtained by the MaNGA survey. We detected auroral emission line [OII]$λλ$7320,7330 which allows us to measure chemical abundance by direct T$_e$ method. We found that the scatter of the oxygen abundance derived by the strong line method is large. The oxygen abundances 12 + log(O/H) derived by strong line method vary from ~7.3 to ~7.8 with a mean value of ~7.55. The oxygen abundances derived in two apertures of 2 arcseconds by the direct T$_e$ method using our measurements of the O$^+$ auroral line is about 7.8 dex. The nitrogen-to-oxygen ratio log(N/O) of about -1.5 is typical value for a low metallicity galaxy, maybe slightly shifted towards higher N/O ratios with respect to the N/O values in the HII regions in nearby galaxies. An unusual negative trend between log(N/O) and oxygen abundance is detected. NGC 4163 is a gas-poor galaxy with a neutral atomic gas mass fraction of around 0.25. The oxygen abundance in the galaxy is only around 0.1 of the oxygen abundance potentially attainable in a galaxy with such a gas mass fraction. The low metallicity coupled with the low gas mass fraction implies that either the metallicity of the interstellar medium of the galaxy was reduced by pristine gas infall in the recent epoch or the evolution of this galaxy was accompanied by strong galactic winds.
description: 11 pages, 8 figures, 2 tables. Accepted for publication in AN
Chiral phosphoric acid-catalyzed asymmetric protonation reactions of vinylheteroaryls
Creators: name: Ashford, Matthew
Publisher: name: University of St Andrews
Year: 2022

description: This thesis describes investigations into the chiral phosphoric acid-catalyzed aza-Michael addition-asymmetric protonation between arylamines and various α-substituted vinylheterocycles. Initially, research focused on the development of optimal reaction conditions for the aza-Michael addition-asymmetric protonation reaction of arylamines and fluorovinylheterocycles, furnishing heterocyclic phenethylamine products containing benzylic stereocentres with a carbon-fluorine bond in good yields (up to 95%) and enantioselectivity (up to >99:1 e.r.). Investigation into the asymmetric protonation step was carried out through DFT calculations and kinetic experiments, this provided evidence for a stereocontrolled proton transfer from catalyst to substrate. Additionally, the conformation of the heterocyclic phenethylamine products was explored through DFT calculations and XRD. Chlorovinylheterocycles were also investigated within the aza-Michael addition- asymmetric protonation reaction, furnishing heterocyclic phenethylamine products containing benzylic stereocentres with a carbon-chlorine bond in good yields (up to 99%) and enantioselectivity (up to 99:1 e.r.). Development of a one-pot aza-Michael addition- asymmetric protonation-ring closure reaction was also carried out to furnish chiral heterocyclic aziridines in good yields (up to 81%) and enantioselectivity (up to 97:3 e.r.). Product derivatization of the chiral heterocyclic aziridines furnished chiral vicinal diamines in good yields (up to 84% yield) and enantioselectivity (up to 96:4 e.r.). Catalyst variation experiments showed the importance of steric interactions from the catalyst alkyl groups in enforcing high enantioselectivity.
Yukawa Friedel-Tail pair potentials for warm dense matter applications
Creators: name: Dharma-wardana, M. W. C.
name: Stanek, Lucas J.
name: Murillo, Michael S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Accurate equations of state (EOS) and plasma transport properties are essential for numerical simulations of warm dense matter encountered in many high-energy-density situations. Molecular dynamics (MD) is a simulation method that generates EOS and transport data using an externally provided potential to dynamically evolve the particles without further reference to the electrons. To minimize computational cost, pair potentials needed in MD may be obtained from the neutral-pseudoatom (NPA) approach, a form of single-ion density functional theory (DFT), where many-ion effects are included via ion-ion correlation functionals. Standard $N$-ion DFT-MD provides pair potentials via the force matching technique but at much greater computational cost. Here we propose a simple analytic model for pair potentials with physically meaningful parameters based on a Yukawa form with a thermally damped Friedel tail (YFT) applicable to systems containing free electrons. The YFT model accurately fits NPA pair potentials or the non-parametric force-matched potentials from $N$-ion DFT-MD, showing excellent agreement for a wide range of conditions. The YFT form provides accurate extrapolations of the NPA or force-matched potentials for small and large particle separations within a physical model. Our method can be adopted to treat plasma mixtures, allowing for large-scale simulations of multi-species warm dense matter.
description: 13 figures
Hong-Ou-Mandel Interference between Two Hyper-Entangled Photons Enables Observation of Symmetric and Anti-Symmetric Particle Exchange Phases
Creators: name: Liu, Zhi-Feng
name: Chen, Chao
name: Xu, Jia-Min
name: Cheng, Zi-Mo
name: Ren, Zhi-Cheng
name: Dong, Bo-Wen
name: Lou, Yan-Chao
name: Yang, Yu-Xiang
name: Xue, Shu-Tian
name: Liu, Zhi-Hong
name: Zhu, Wen-Zheng
name: Wang, Xi-Lin
name: Wang, Hui-Tian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Two-photon Hong-Ou-Mandel (HOM) interference is a fundamental quantum effect with no classical counterpart. The exiting researches on two-photon interference were mainly limited in one degree of freedom (DoF), hence it is still a challenge to realize the quantum interference in multiple DoFs. Here we demonstrate the HOM interference between two hyper-entangled photons in two DoFs of polarization and orbital angular momentum (OAM) for all the sixteen hyper-entangled Bell states. We observe hyper-entangled two-photon interference with bunching effect for ten symmetric states (nine Boson-Boson states, one Fermion-Fermion state) and anti-bunching effect for six anti-symmetric states (three Boson-Fermion states, three Fermion-Boson states). More interestingly, expanding the Hilbert space by introducing an extra DoF for two photons enables to transfer the unmeasurable external phase in the initial DoF to a measurable internal phase in the expanded two DoFs. We directly measured the symmetric exchange phases being $0.012 \pm 0.002$, $0.025 \pm 0.002$ and $0.027 \pm 0.002$ in radian for the three Boson states in OAM and the anti-symmetric exchange phase being $0.991 π\pm 0.002$ in radian for the other Fermion state, as theoretical predictions. Our work may not only pave the way for more wide applications of quantum interference, but also develop new technologies by expanding Hilbert space in more DoFs.
description: Accepted by Physical Review Letters
title: Contrast-enhanced ultrasound (CEUS) in coxitis
Creators: name: Löffler, Christian
name: Sattler, Horst
name: Uppenkamp, Michael
name: Bergner, Raoul
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Hip involvement is common in rheumatological joint diseases but can be difficult to diagnose, especially without MRI. B-mode ultrasound (US) detects joint capsule distention while distinguishing effusion from proliferative synovia is strenuous since both appear hypoechoic. Power Doppler[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
A stable partitioned FSI algorithm for rigid bodies and incompressible flow. Part II: General formulation
Creators: name: Banks, J. W.
name: Henshaw, W. D.
name: Schwendeman, D. W.
name: Tang, Qi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A stable partitioned algorithm is developed for fluid-structure interaction (FSI) problems involving viscous incompressible flow and rigid bodies. This {\em added-mass partitioned} (AMP) algorithm remains stable, without sub-iterations, for light and even zero mass rigid bodies when added-mass and viscous added-damping effects are large. The scheme is based on a generalized Robin interface condition for the fluid pressure that includes terms involving the linear acceleration and angular acceleration of the rigid body. Added mass effects are handled in the Robin condition by inclusion of a boundary integral term that depends on the pressure. Added-damping effects due to the viscous shear forces on the body are treated by inclusion of added-damping tensors that are derived through a linearization of the integrals defining the force and torque. Added-damping effects may be important at low Reynolds number, or, for example, in the case of a rotating cylinder or rotating sphere when the rotational moments of inertia are small. In this second part of a two-part series, the general formulation of the AMP scheme is presented including the form of the AMP interface conditions and added-damping tensors for general geometries. A fully second-order accurate implementation of the AMP scheme is developed in two dimensions based on a fractional-step method for the incompressible Navier-Stokes equations using finite difference methods and overlapping grids to handle the moving geometry. The numerical scheme is verified on a number of difficult benchmark problems.
Implantación de la carrera administrativa en el Departamento de Sucre para el personal administrativo
Creators: name: Dávila Cerro, Alcibiades
name: Garcia L., Edinson
Publisher: name: Universidad de Cartagena
Year: 1972
Subjects: Administración de personal
Recursos humanos

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1972
description: El presente trabajo tiene como objetivo, poner en marcha una administración progresista en el departamento que mantenga la continuidad de los planes de desarrollo y donde los funcionarios tengan estabilidad en sus cargos, ascenso por el buen desempeño de sus funciones, en general.
Extreme nature of four blue-excess dust-obscured galaxies revealed by optical spectroscopy
Creators: name: Noboriguchi, Akatoki
name: Nagao, Tohru
name: Toba, Yoshiki
name: Ichikawa, Kohei
name: Kajisawa, Masaru
name: Kato, Nanako
name: Kawaguchi, Toshihiro
name: Matsuhara, Hideo
name: Matsuoka, Yoshiki
name: Onishi, Kyoko
name: Onoue, Masafusa
name: Tamada, Nozomu
name: Terao, Koki
name: Terashima, Yuichi
name: Ueda, Yoshihiro
name: Yamashita, Takuji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report optical spectroscopic observations of four blue-excess dust-obscured galaxies (BluDOGs) identified by Subaru Hyper Suprime-Cam. BluDOGs are a sub-class of dust-obscured galaxies (DOGs, defined with the extremely red color $(i-[22])_{\rm AB} \geq 7.0$; Toba et al. 2015), showing a significant flux excess in the optical $g$- and $r$-bands over the power-law fits to the fluxes at the longer wavelengths. Noboriguchi et al. (2019) has suggested that BluDOGs may correspond to the blowing-out phase involved in a gas-rich major merger scenario. However the detailed properties of BluDOGs are not understood because of the lack of spectroscopic information. In this work, we carry out deep optical spectroscopic observations of four BluDOGs using Subaru/FOCAS and VLT/FORS2. The obtained spectra show broad emission lines with extremely large equivalent widths, and a blue wing in the CIV line profile. The redshifts are between 2.2 and 3.3. The averaged rest-frame equivalent widths of the CIV lines are $160\pm33$ $\mathrm{\mathring{A}}$, $\sim$7 times higher than the average of a typical type-1 quasar. The FWHMs of their velocity profiles are between 1990 and 4470 ${\rm km\ s^{-1}}$, and their asymmetric parameters are 0.05 and 0.25. Such strong CIV lines significantly affect the broad-band magnitudes, which is partly the origin of the blue excess seen in the spectral energy distribution of BluDOGs. Their estimated supermassive black hole masses are $1.1\times10^8 < M_{\rm BH}/M_\odot < 5.5 \times 10^8$. The inferred Eddington ratios of the BluDOGs are higher than 1 ($1.1< λ_{\rm Edd} < 3.8$), suggesting that the BluDOGs are in a rapidly evolving phase of supermassive black holes.
description: 22 pages, 12 figures, accepted for publication in ApJ
Construction of the Lyapunov spectrum in a chaotic system displaying phase synchronization
Creators: name: De Carlo, Leonardo
name: Gentile, Guido
name: Giuliani, Alessandro
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We consider a three-dimensional chaotic system consisting of the suspension of Arnold's cat map coupled with a clock via a weak dissipative interaction. We show that the coupled system displays a synchronization phenomenon, in the sense that the relative phase between the suspension flow and the clock locks to a special value, thus making the motion fall onto a lower dimensional attractor. More specifically, we construct the attractive invariant manifold, of dimension smaller than three, using a convergent perturbative expansion. Moreover, we compute via convergent series the Lyapunov exponents, including notably the central one. The result generalizes a previous construction of the attractive invariant manifold in a similar but simpler model. The main novelty of the current construction relies in the computation of the Lyapunov spectrum, which consists of non-trivial analytic exponents. Some conjectures about a possible smoothening transition of the attractor as the coupling is increased are also discussed.
description: 24 pages, 10 figures
Betti numbers of configuration spaces of surfaces
Creators: name: Drummond-Cole, Gabriel C.
name: Knudsen, Ben
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We give explicit formulas for the Betti numbers, both stable and unstable, of the unordered configuration spaces of an arbitrary surface of finite type.
description: Minor changes. To appear in the Journal of the London Mathematical Society. May vary slightly from published version
Estimation of intrinsic diffusion coefficients in a pseudo-binary diffusion couple
Creators: name: Santra, Sangeeta
name: Paul, Aloke
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Major drawback of studying diffusion in multi-component systems is the lack of suitable techniques to estimate the diffusion parameters. In this study, a generalized treatment to determine the intrinsic diffusion coefficients in multi-component systems is developed utilizing the concept of pseudo-binary approach. This is explained with the help of experimentally developed diffusion profiles in the Cu(Sn, Ga) and Cu(Sn, Si) solid solutions.
title: Quantification of tocilizumab (TCZ) response in patients with rheumatoid arthritis by indocyanine green (ICG) enhanced fluorescence optical imaging (FOI)
Creators: name: Kästner, Peter
name: Schirner, Michael
name: Kästner, Sara
name: Cziumplik, Mathias
name: Hellmann, Peter
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: The diagnosis and treatment of rheumatoid arthritis (RA) at an early stage is highly influential on disease progression. Therefore, there is a need for objective and sensitive diagnostic tools. Fluorescence optical imaging (FOI) is a novel technology for the assessment of inflammation [for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Los recursos laborales en la legislación colombiana
Creators: name: Barrios S., Braulio
Publisher: name: Universidad de Cartagena
Year: 1973
Subjects: Legislación - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas, 1973.
description: Siendo el trabajo un derecho fundamental de toda persona además es un obligación social y goza de protección del estado, que garantiza la no discriminación, la igualdad salarial, protección social y el derecho de asociación
Iterative Hard Thresholding for Model Selection in Genome-Wide Association Studies
Creators: name: Keys, Kevin L.
name: Chen, Gary K.
name: Lange, Kenneth
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: A genome-wide association study (GWAS) correlates marker variation with trait variation in a sample of individuals. Each study subject is genotyped at a multitude of SNPs (single nucleotide polymorphisms) spanning the genome. Here we assume that subjects are unrelated and collected at random and that trait values are normally distributed or transformed to normality. Over the past decade, researchers have been remarkably successful in applying GWAS analysis to hundreds of traits. The massive amount of data produced in these studies present unique computational challenges. Penalized regression with LASSO or MCP penalties is capable of selecting a handful of associated SNPs from millions of potential SNPs. Unfortunately, model selection can be corrupted by false positives and false negatives, obscuring the genetic underpinning of a trait. This paper introduces the iterative hard thresholding (IHT) algorithm to the GWAS analysis of continuous traits. Our parallel implementation of IHT accommodates SNP genotype compression and exploits multiple CPU cores and graphics processing units (GPUs). This allows statistical geneticists to leverage commodity desktop computers in GWAS analysis and to avoid supercomputing. We evaluate IHT performance on both simulated and real GWAS data and conclude that it reduces false positive and false negative rates while remaining competitive in computational time with penalized regression. Source code is freely available at https://github.com/klkeys/IHT.jl.
description: 13 pages, 1 figure, 4 tables
title: Effects of tocilizumab on neutrophil survival and function
Creators: name: Gaber, Timo
name: Hahne, Martin
name: Strehl, Cindy
name: Hoff, Paula
name: Yvonne, Dörffel
name: Feist, Eugen
name: Burmester, Gerd-Rüdiger
name: Buttgereit, Frank
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: The synovial tissue in rheumatoid arthritis (RA) represents a hypoxic environment with up-regulated pro-inflammatory cytokines and cellular infiltrates including neutrophils. Although inhibition of the IL-6 receptor pathway by tocilizumab is a potent treatment for RA, it may also cause[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Magnetism and ultra-fast magnetization dynamics of Co and CoMn alloys at finite temperature
Creators: name: Chimata, R.
name: Delczeg-Czirjak, E. K.
name: Szilva, A.
name: Almeida, R.
name: Kvashnin, Y.
name: Pereiro, M.
name: Mankovsky, S.
name: Ebert, H.
name: Thonig, D.
name: Sanyal, B.
name: Klautau, A. B.
name: Eriksson, O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Temperature-dependent magnetic experiments like pump-probe measurements generated by a pulsed laser have become a crucial technique for switching the magnetization in the picosecond time scale. Apart from having practical implications on the magnetic storage technology, the research field of ultrafast magnetization poses also fundamental physical questions. To correctly describe the time evolution of the atomic magnetic moments under the influence of a temperature-dependent laser pulse, it remains crucial to know if the magnetic material under investigation has magnetic excitation spectrum that is more or less dependent on the magnetic configuration, e.g. as reflected by the temperature dependence of the exchange interactions. In this article, we demonstrate from first-principles theory that the magnetic excitation spectra in Co with fcc, bcc and hcp structures are nearly identical in a wide range of non-collinear magnetic configurations. This is a curious result of a balance between the size of the magnetic moments and the strength of the Heisenberg exchange interactions, that in themselves vary with configuration, but put together in an effective spin Hamiltonian results in a configuration independent effective model. We have used such a Hamiltonian, together with ab-initio calculated damping parameters, to investigate the magnon dispersion relationship as well as the ultrafast magnetisation dynamics of Co and Co-rich CoMn alloys.
title: Catecholaminergic-to-cholinergic transition of sympathetic nerve fibers is stimulated under healthy but not under inflammatory arthritic conditions
Creators: name: Stangl, Hubert
name: Springorum, Robert H.
name: Muschter, Dominique
name: Grässel, Susanne
name: Straub, Rainer H.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Density of sympathetic nerve fibers decreases in inflamed arthritic tissue tested by immunoreactivity towards tyrosine-hydroxylase (TH, catecholaminergic key enzyme). Since sympathetic nerve fibers can change phenotype from catecholaminergic to cholinergic (example: sweat glands, periosteum),[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Análisis de la respuesta de la tercera pregunta kantiana: ¿Qué me es permitido esperar?
Creators: name: Martínez Beltran, Leonardo
Publisher: name: Universidad de Cartagena
Year: 2008
Subjects: Filosofía

description: Tesis (Filósofo) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Filosofía, 2008
description: En el primer capítulo se hace un análisis de la manera en que el discurso sobre la racionalidad práctica, sobre las acciones humanas, es posible y que lo llena de sentido. El segundo capítulo está dedicado al análisis de los distintos puntos en los que Kant estructura la respuesta a la tercera pregunta, partiendo por el sentido de la historia, el progreso legal, como este me lleva al progreso moral y en qué medida este progreso se ve reflejado en las acciones humanas y en la instauración de una sociedad cosmopolita.
EFFECTS OF PAY AS YOU THROW IN A MUNICIPALITY WITH A HIGH SEPARATE COLLECTION BASELINE: SEVESO, WASTE4THINK PROJECT
Creators: name: Vila, Marta
name: Giavini, Michele
name: Alonso, Ainhoa
Publisher: name: Zenodo
Year: 2019
Subjects: PAYT
social action
KAYT

description: The Horizon2020 WASTE4think project, funded by the European Union, is aiming to test innovative ecosolutions to improve waste management in 4 pilot cities. In Seveso (Italy), Pay As You Throw (PAYT) has been introduced after a long term sensitization phase, lasting many years that lead the city to have a very high baseline (separate collection rate: 75%). PAYT allowed to achieve even higher results, but the key outcome is that without social actions performed to sensitize people on this issue, accompanying the change of habits, the acceptance of PAYT may be low. This instrument is being promoted by the EU as an effective incentive tool, but its implementation implies an in-depth analysis of its effects including acceptance by citizens and consistency with the other tools implemented in each municipality. The dataset used for the publication can be accessed at https://zenodo.org/record/3906096#.XvMib-dS-w4
Corticotropin-releasing hormone as a regulator of thyrotropin secretion in birds
Creators: name: Watanabe, Yugo
Publisher: name: La Trobe
Year: 2023

description: Submission note: Thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the College of Science, Health and Engineering, School of Life Sciences, Department of Physiology, Anatomy and Microbiology, La Trobe University, Victoria.
Tracing the threads of the Calabrian diaspora to North-West Victoria: Explorations through performance, video and relational art
Creators: name: Marcuzzo, Luci Domenica
Publisher: name: La Trobe
Year: 2023

description: Submission note: Submitted in partial fulfilment of the requirements for the degree of Master of Visual Arts by Research to the Department of Creative Arts and English, School of Humanities and Social Sciences, College of Arts, Social Sciences and Commerce, La Trobe University, Victoria.
title: Aspekte der ärztlichen Versorgung bei Lupus-Patienten – Ergebnisse der LuLa-Studie
Creators: name: Chehab, Gamal
name: Richter, Jutta
name: Fischer-Betz, Rebecca
name: Willers, Reinhart
name: Winkler-Rohlfing, Borgi
name: Schneider, Matthias
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Lupus Patienten werden aufgrund der verschiedenartigen Manifestationen und unterschiedlicher lokaler Gegebenheiten ganz unterschiedlich versorgt. In der LuLa-Studie erheben wir Versorgungsdaten direkt vom Patienten und erhalten dadurch Angaben auch von primär nicht rheumatologisch betreuten[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Rare region effects and dynamics near the many-body localization transition
Creators: name: Agarwal, Kartiek
name: Altman, Ehud
name: Demler, Eugene
name: Gopalakrishnan, Sarang
name: Huse, David A.
name: Knap, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The low-frequency response of systems near the many-body localization phase transition, on either side of the transition, is dominated by contributions from rare regions that are locally "in the other phase", i.e., rare localized regions in a system that is typically thermal, or rare thermal regions in a system that is typically localized. Rare localized regions affect the properties of the thermal phase, especially in one dimension, by acting as bottlenecks for transport and the growth of entanglement, whereas rare thermal regions in the localized phase act as local "baths" and dominate the low-frequency response of the MBL phase. We review recent progress in understanding these rare-region effects, and discuss some of the open questions associated with them: in particular, whether and in what circumstances a single rare thermal region can destabilize the many-body localized phase.
description: Review Article, 14 pages + acknowledgements + Refs
The Rapidly Spinning Intermediate-Mass Black Hole 3XMM J150052.0+015452
Creators: name: Cao, Z.
name: Jonker, P. G.
name: Wen, S.
name: Stone, N. C.
name: Zabludoff, A. I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A star tidally disrupted by a black hole can form an accretion disc with a super-Eddington mass accretion rate; the X-ray emission produced by the inner disc provides constraints on the black hole mass $M_\bullet$ and dimensionless spin parameter $a_\bullet$. Previous studies have suggested that the $M_\bullet$ responsible for the tidal disruption event 3XMM J150052.0+015452 (hereafter J150052) is $\sim$10$^{5} M_{\odot}$, in the intermediate black hole (IMBH) regime. Fitting multi-epoch XMM-Newton and Chandra X-ray spectra obtained after 2008 during the source's decade-long decay, with our latest slim accretion disc model gives $M_\bullet = 2.0^{+1.0}_{-0.3}\times10^{5} M_{\odot}$ (at 68% confidence) and $a_\bullet > 0.97$ (a 84.1% confidence lower limit). The spectra obtained between 2008-2014 are significantly harder than those after 2014, an evolution that can be well explained by including the effects of inverse-Comptonisation by a corona on the early-time spectra. The corona is present when the source accretion rate is super-Eddington, while there is no evidence for its effect in data obtained after 2014, when the mass accretion rate is around the Eddington-limit. Based on our spectral study, we infer that the corona is optically thick and warm ($kT_e=2.3^{+2.7}_{-0.8}$ keV). Our mass and spin measurements of J150052 confirm it as an IMBH and point to a rapid, near extremal, spin. These $M_\bullet$ and $a_\bullet$ values rule out both vector bosons and axions of masses $\sim10^{-16}$ eV.
description: 11 pages, 6 figures. Accepted for publication in MNRAS
Inference in Functional Linear Quantile Regression
Creators: name: Li, Meng
name: Wang, Kehui
name: Maity, Arnab
name: Staicu, Ana-Maria
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this paper, we study statistical inference in functional quantile regression for scalar response and a functional covariate. Specifically, we consider a functional linear quantile regression model where the effect of the covariate on the quantile of the response is modeled through the inner product between the functional covariate and an unknown smooth regression parameter function that varies with the level of quantile. The objective is to test that the regression parameter is constant across several quantile levels of interest. The parameter function is estimated by combining ideas from functional principal component analysis and quantile regression. An adjusted Wald testing procedure is proposed for this hypothesis of interest, and its chi-square asymptotic null distribution is derived. The testing procedure is investigated numerically in simulations involving sparse and noisy functional covariates and in a capital bike share data application. The proposed approach is easy to implement and the {\tt R} code is published online at \url{https://github.com/xylimeng/fQR-testing}.
Diseño de túnel de viento, mediante la dinámica de fluidos, para estudios de contaminación atmosférica
Creators: name: Anaya Morelo, Jaime Alberto
name: Mendoza Gonzalez, Terson De Jesus
Publisher: name: Universidad de Cartagena
Year: 2011
Subjects: Tuneles de viento
Tuneles aerodinámicos - Diseño y construcción

description: Tesis (Ingeniero Civil).--Universidad de Cartagena. Facultad de Ciencias E Ingenierías. Programa de Ingeniería Civil, 2011.
description: El presente estudio tiene por objeto diseñar un túnel de viento de baja velocidad, mediante el uso de las técnicas dinámicas computacionales de fluidos (COMSOL Múltiples), que sea capaz de recrear de la manera mas aproximada a la realidad las condiciones de viento, que generalmente se presenta en la capa limite atmosférica de la región Caribe, a fin de poder estudiar experimentalmente la dispersión de contaminación en la atfosfera.
Fluoride Removal from Aqueous Solution Using Chitosan Adsorbent
Creators: name: Hunegnaw, Tekle
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: In this study the extraction of chitosan from fish scale was studied and the performance towards fluoride adsorption from aqueous solution was evaluated by batch experiments. The methods used for extraction of chitosan were demineralization, and deproteinization followed by deacetylation. Proximate analysis, FTIR and XRD analysis were carried out on the obtained chitosan. Physicochemical properties of obtained chitosan was determined by solubility, water uptake and oil uptake capacity analysis. The water binding capacity and fat binding capacity and solubility were found to be 576%, 219.5% and 83.8%, respectively. Degree of Deacetylation was found to be 84%. The effects of initial fluoride concentration (10, 15 & 20mg/l), adsorbent dosage (1, 2 & 3gm) and pH of the solution (5, 7 & 9) were analyzed by Design-Expert version 7.0.0 of full factorial versus quadratic model response surface methodology and the optimal conditions that gave maximum/efficient removal efficiency were selected. The adsorption capacity of fluoride by chitosan from aqueous solution was found to be 3.248mg/g; and 3gm of adsorbent dosage, pH value of 7 and 10mg/l initial concentration with 98.47% removal efficiency were selected as the optimal conditions. The kinetic studies revealed that the data best fits for pseudo second order regression model and the adsorption process followed Freundlich isotherm model. The adsorbent after fluoride removal regenerated using 0.1N NaCl aqueous solution. The results indicate that chitosan adsorbent extracted from fish scale has a good capability in the removal of fluoride ions from aqueous solution.
Search for an Ultraviolet Zero in the Seven-Loop Beta Function of the $λϕ^4_4$ Theory
Creators: name: Shrock, Robert
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate whether the seven-loop beta function of the $λϕ^4_4$ theory exhibits evidence for an ultraviolet zero. In addition to a direct analysis of the beta function, we calculate and study Padé approximants and discuss effects of scheme transformations on the results. Confirming and extending our earlier studies of the five-loop and six-loop beta functions, we find that in the range of $λ$ where the perturbative calculation of the seven-loop beta function is reliable, the theory does not exhibit evidence for an ultraviolet zero.
description: 6 pages, latex, 2 figures. arXiv admin note: substantial text overlap with arXiv:1610.03733
Ranking queries in uncertain databases
Creators: name: Nguyen, Huynh Thanh Ha
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Engineering and Mathematical Sciences, College of Science, Health and Engineering, La Trobe University, Bundoora.

In recent years, uncertain (imprecise) data has emerged in many real-world application domains, including sensor networks, moving object tracking, data integration, data cleaning, information extraction and others, hence a research area has emerged to support advanced techniques to efficiently manage and explore such uncertain databases. Ranking queries (also known as top-k queries) are one of the most important analytics techniques and are widely used in data exploration, data analytics and decision-making scenarios. Compared with ranking processes on traditional databases, ranking uncertain data to provide meaningful answers is more complicated due to the complex interplay between scores and probabilities which complicates the semantics of the queries. In addition, the problem is even more challenging when there are conflicting multiple ranking criteria involved in the ranking processes. The main contributions of this thesis are to develop several novel ranking approaches to effectively and efficiently retrieve the truly interesting top-k results on multidimensional and partially ordered domains on uncertain data. First, we define a novel approach, called the Dominating Top-k Aggregate query, which overcomes the weaknesses of several existing ranking approaches to provide trustworthy and useful knowledge from uncertain Big Data to support data analytics and decision making. We guarantee the reliability of our ranking results by demonstrating the satisfaction of data correlations that constrain six fundamental ranking properties of our method. Second, as the top-k representative skyline query is another important method for multi-criteria decision-making applications, we are the first to study the query in the context of uncertain data. We handle both discrete and continuous cases. We also personalize the query by employing user-references regarding the priority of individual raking criteria. Finally, we study ranking queries under the extended uncertain data model where the attribute values of data objects are expressed as continuous ranges.
An Optical Study of the Black Widow Population
Creators: name: Kandel, D.
name: Romani, Roger W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The optical study of the heated substellar companions of `Black Widow' (BW) millisecond pulsars (MSP) provides unique information on the MSP particle and radiation output and on the neutron star mass. Here we present analysis of optical photometry and spectroscopy of a set of relatively bright BWs, many newly discovered in association with Fermi $γ$-ray sources. Interpreting the optical data requires sophisticated models of the companion heating. We provide a uniform analysis, selecting the preferred heating model and reporting on the companion masses and radii, the pulsar heating power and neutron star mass. The substellar companions are substantially degenerate, with average densities $15-30\times$ Solar, but are inflated above their zero temperature radii. We find evidence that the most extreme recycled BW pulsars have both large $>0.8M_\odot$ accreted mass and low $<10^8$G magnetic fields. Examining a set of heavy BWs, we infer that neutron star masses larger than $2.19 M_\odot$ ($1σ$ confidence) or $2.08 M_\odot$ ($3σ$ confidence) are required; these bounds exclude all but the stiffest equations of state in standard tabulations.
description: To appear in the Astrophysical Journal
Why Granular Media Are Thermal, and Quite Normal, After All
Creators: name: Jiang, Yimin
name: Liu, Mario
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Two approaches exist to account for granular dynamics: The athermal one takes grains as elementary, the thermal one considers the total entropy that includes microscopic degrees of freedom such as phonons and electrons. Discrete element method (DEM), granular kinetic theory and athermal statistical mechanics (ASM) belong to the first, granular solid hydrodynamics (GSH) to the second one. A discussion of the conceptual differences between both is given here, leading, among others, to the following insights: (1) While DEM and granular kinetic theory are well justified to take grains as athermal, any entropic consideration is far less likely to succeed. (2) In addition to modeling grains as a gas of dissipative, rigid mass points, it is very helpful take grains as a thermal solid that has been sliced and diced. (3) General principles that appear invalid in granular media are repaired and restored once the true entropy is included. These abnormalities [such as invalidity of the fluctuation-dissipation theorem, granular temperatures failing to equilibrate, and grains at rest unable to explore the phase space] are consequences of the athermal approximation, not properties of granular media.
description: 35 pages, 2 fig
title: Auswirkungen einer musikpädagogischen Intervention auf die Nachsingefähigkeit bei Grundschülern
Creators: name: Wagner, Franziska
name: Pieper, Lennart
name: Schubotz, Matthias
name: Meuret, Sylvia
name: Fuchs, Michael
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund Die Fähigkeit zum Nachsingen vorgegebener Töne basiert im Kindesalter auf auditiven und stimmlichen Erfahrungen und ist Voraussetzung für sängerische Aktivitäten, aber auch für die Messung eines Singstimmprofils im klinischen Kontext. In der Literatur finden[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 32. Wissenschaftliche Jahrestagung der Deutschen Gesellschaft für Phoniatrie und Pädaudiologie (DGPP)
Introducción al derecho laboral
Creators: name: Ledesma Del Gaudio, Nancy M.
Publisher: name: Universidad de Cartagena
Year: 1976
Subjects: Derecho laboral - Colombia
Derecho laboral - Aspectos jurídicos

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas, 1976.
description: En casos de conflictos para llegar a una solución pacífica, se ha de dar preferencia a un sincero dialogo entre las partes, sin embargo, hoy en día la huelga es un medio necesario, aun sea el último para las defensas de los derechos y satisfacciones.
title: Genetische und phänotypische Analyse einer Münsteraner Familie mit spezifischer Sprachentwicklungsstörung
Creators: name: Regele, Sabrina
name: Bartha-Doering, Lisa
name: Am Zehnhoff-Dinnesen, Antoinette
name: Bogdanova Markov, Nadja
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund Die spezifische Sprachentwicklungsstörung (SLI) ist definiert als eine Sprachentwicklungsstörung mit normaler nonverbaler Intelligenz, normalem Hörvermögen und ohne neurologische Erkrankungen oder psychische Störungen [ref:1]. Verschiedene Teilbereiche[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 32. Wissenschaftliche Jahrestagung der Deutschen Gesellschaft für Phoniatrie und Pädaudiologie (DGPP)
Photon Flux Perturbations of Kepler Light Curves
Creators: name: Paris, Antonio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this study, we expand the discussion of extrasolar planetary research by proposing a new approach to detecting extrasolar moons using Kepler (K2) light curves. We shaped this investigation by comparing transit light curve data of ~5000 main-sequence stars cataloged in the NASA Exoplanet Archive, the Radio Galaxy Zoo Exoplanet Explorers and the Exoplanet Follow Up Observing Program, which served as the repository to collect and analyze supplementary K2 data. By examining K2 light curves, various characteristics related to transits were modeled, which we then compared with confirmed extrasolar planets, variable stars such as eclipsing binaries and noise or gaps in the data. For illustration, perturbations in the timing of two separate transits for 2MASS J08251369+1425306 (Rs ~ 0.346) produced two characteristic decreases in the photon flux followed by two increases, inferring the presence of an extrasolar planet (Rp ~ 0.0129) and its companion, an extrasolar moon (Rm ~ 0.0048). To test our hypothesis, we scrutinized various competing assumptions to resolve the source of the duo photon flux, namely the Rossiter McLaughlin effect, limb darkening, a multiplanet system or a planet occulting one or more sunspots on the surface of the star. However, we uncovered no analogous light curve in K2 to fit the competing hypotheses and account for the proposed extrasolar companion.
description: 12 pages, 12 figures, 3 equations
Analyses of novel regulators of Drosophila melanogaster spermatogenesis
Creators: name: La Marca, John Edmund
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the La Trobe Institute of Molecular Science, College of Science, Health, and Engineering, La Trobe University, Bundoora.

Adult stem cells play an essential role in the development and maintenance of tissues throughout the lifetime of an organism. Molecular signals from the stem cell microenvironment (or niche) regulate a diversity of cell behaviours, acting to prohibit excess tissue growth and to maintain tissue homeostasis. Model systems containing stem cell niches, like the Drosophila melanogaster testis, have been instrumental in studying the genetic factors regulating stem cell self-renewal, differentiation, and proliferation, all of which are commonly disrupted in tumourigenesis. Utilising the developing Drosophila testis, a forward genetic screen was conducted to identify novel regulators of spermatogenesis and, potentially, stem cell behaviour. A number of 2nd chromosome alleles were identified, characterised, and their genetic lesions isolated. Additionally, characterisations of a previously identified 3rd chromosome allele – jam packed (jam) – were conducted, and it was identified to be an allele of a poorly understood gene: Strip. Strip encodes a highly conserved protein of as yet undetermined function, and has been implicated as having roles in a wide range of biological processes in a number of species. It is also thought to be a central component of the Striatin-interacting phosphatase and kinase (STRIPAK) complex, a newly discovered and diversely functioning protein complex. This thesis demonstrates that Strip acts within the somatic lineage of the developing Drosophila testis to autonomously regulate both morphology and differentiation, while non-autonomously influencing the proliferation and differentiation of the germline lineage. Results from this study suggest Strip acts with another STRIPAK component, Cka, and that together these molecules negatively regulate the Jun-N-terminal Kinase (JNK) signalling pathway, a previously unstudied signalling pathway in Drosophila spermatogenesis. Additionally, we demonstrated that Strip genetically interacts with Rac1, but not with components of the canonical EGFR signalling pathway during spermatogenesis. Our data indicate that by regulating JNK signalling, Strip effects proper somatic cell enclosure of the germline lineage, and hence proper spermatogenesis.
On-line Joint Limit Avoidance for Torque Controlled Robots by Joint Space Parametrization
Creators: name: Charbonneau, Marie
name: Nori, Francesco
name: Pucci, Daniele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences
subject: 93C85, 70E60, 70B15, 68T40

description: This paper proposes control laws ensuring the stabilization of a time-varying desired joint trajectory, as well as joint limit avoidance, in the case of fully-actuated manipulators. The key idea is to perform a parametrization of the feasible joint space in terms of exogenous states. It follows that the control of these states allows for joint limit avoidance. One of the main outcomes of this paper is that position terms in control laws are replaced by parametrized terms, where joint limits must be avoided. Stability and convergence of time-varying reference trajectories obtained with the proposed method are demonstrated to be in the sense of Lyapunov. The introduced control laws are verified by carrying out experiments on two degrees-of-freedom of the humanoid robot iCub.
description: 8 pages, 4 figures. Submitted to the 2016 IEEE-RAS International Conference on Humanoid Robots