cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Suppressing chaos in discontinuous systems of fractional order by active control
Creators: name: Danca, Marius-F
name: Garrappa, Roberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper, a chaos control algorithm for a class of piece-wise continuous chaotic systems of fractional order, in the Caputo sense, is proposed. With the aid of Filippov's convex regularization and via differential inclusions, the underlying discontinuous initial value problem is first recast in terms of a set-valued problem and hence it is continuously approximated by using Cellina's Theorem for differential inclusions. For chaos control, an active control technique is implemented so that the unstable equilibria become stable. As example, Shimizu--Morioka's system is considered. Numerical simulations are obtained by means of the Adams-Bashforth-Moulton method for differential equations of fractional-order.
description: submitted
Background Rates in Several Hard X-Ray Photon Counting Pixel Array Detectors
Creators: name: Baron, Alfred Q. R.
name: Ishikawa, Daisuke
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Background rates in several pixel array detectors are investigated with an eye toward using them with hard, >6 keV, x-rays in very low-rate experiments - e.g. at signal rates <0.1/s/cm^2. Measured background event rates for a detector with an unshielded 0.75 mm thick CdTe sensor on the experimental floor at SPring-8 varied from 0.4/s/cm^2 with a 6 keV lower-level discriminator (LLD) threshold to 0.2/s/cm^2 with a 75 keV LLD threshold. The background for a detector with a 1 mm thick silicon sensor was smaller, ~0.08/s/cm^2 for a 3keV threshold dropping to ~0.07/s/cm^2 at a 17 keV threshold. These rates are dominated by terrestrial sources, such as gamma rays emitted from trace impurities in concrete, with only a small contribution, <0.01/s/cm2, from direct detection of cosmic ray muons (CRMs). 15 mm of Pb shielding reduces the measured rates to < 0.05/s/cm2 in CdTe and to <0.02/s/cm^2 in 1 mm silicon. Additional processing, "time slicing", as may be used in low-rate experiments where backgrounds may be most problematic, is shown to reduce the background rates further, to < 0.004/s/cm^2 with the silicon sensor, and to between 0.002 and 0.02/s/cm^2 for CdTe, where the exact value for CdTe depends sensitively on the detector threshold, and the use of the retriggering and/or the use of dual discriminator thresholds. Background rates are presented as functions of discriminator threshold, shielding, and processing. We also discuss the magnitude of, and the correction for, the limitation of the detector dynamic range that can be introduced by the time slicing. Finally, we present one example where time slicing was used.
description: 15 Pages, 12 Figures, v2 ads link and e-mail
Analysis of $f(R)$ Theory Corresponding to NADE and NHDE
Creators: name: Sharif, M.
name: Zubair, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We develop the connection of $f(R)$ theory with new agegraphic and holographic dark energy models. The function $f(R)$ is reconstructed, regarding the $f(R)$ theory as an effective description for these dark energy models. We show the future evolution of $f$ and conclude that these functions represent distinct pictures of cosmological eras. The cosmological parameters such as equation of state parameter, deceleration parameter, statefinder diagnostic and $ω-ω'$ analysis are investigated which assure the evolutionary paradigm of $f$.
description: 22 pages, 17 figures
Interpreting polarity-ambiguous propositional anaphors with negative antecedents: Some experimental results
Creators: name: Claus, Berry
name: Frühauf, Felix
name: Krifka, Manfred
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: The starting point of the present paper is the assumption that negative sentences introduce two propositional discourse referents, one for the negative proposition and one for the negated, positive proposition. Both propositional discourse referents can be picked up by propositional anaphors, resulting in potential ambiguity (e.g. Ernie: Cookie Monster didn’t eat the cookie. Bert: Kermit believes that[CM didn’t eat the cookie / CM ate the cookie]). We report an explorative experimental study on the interpretation of propositional anaphors that are polarity-ambiguous between a resolution with the negative and the positive propositional discourse referent. We employed two different methods, a direct task (forced choice) and a more indirect task (acceptability rating), which yielded mixed results. Taken together, the findings of our study point to a preference for resolving polarity-ambiguous propositional anaphors with the negative propositional discourse referent and they demonstrate the necessity of methodological variety.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Probing the singularities of the Landau-gauge gluon and ghost propagators with rational approximants
Creators: name: Boito, Diogo
name: Cucchieri, Attilio
name: London, Cristiane Y.
name: Mendes, Tereza
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We employ Padé approximants in the study of the analytic structure of the four-dimensional $SU(2)$ Landau-gauge gluon and ghost propagators in the infrared regime. The approximants, which are model independent, serve as fitting functions for the lattice data. We carefully propagate the uncertainties due to the fitting procedure, taking into account all possible correlations. For the gluon-propagator data, we confirm the presence of a pair of complex poles at $p_{\rm pole}^2 = \left[(-0.37 \,\pm\, 0.05_{\rm stat}\,\pm\, 0.08_{\rm sys}) \pm i\,(0.66\, \pm\, 0.03_{\rm stat}\, \pm\, 0.02_{\rm sys})\right]\, \mathrm{GeV}^2$, where the first error is statistical and the second systematic. The existence of this pair of complex poles, already hinted upon in previous works, is thus put onto a firmer basis, thanks to the model independence and to the careful error propagation of our analysis. For the ghost propagator, the Padés indicate the existence of a single pole at $p^2 = 0$, as expected. In this case, our results also show evidence of a branch cut along the negative real axis of $p^2$. This is corroborated with another type of approximant, the D-Log Padés, which are better suited to studying functions with a branch cut and are applied here for the first time in this context. Due to particular features and limited statistics of the gluon-propagator data, our analysis is inconclusive regarding the presence of a branch cut in the gluon case.
description: 36 pages, 12 figures. Small changes in the text, references added, results unchanged. Accepted for publication in JHEP
Sound and Noise: Proposal for an Interdisciplinary Learning Path
Creators: name: Montalbano, Vera
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: A learning path is proposed starting from the characterization of a sound wave, showing how human beings emit articulate sounds in the language, introducing psychoacoustics, i.e. how the sound interacts with ears and it is transduced into an electrical signal for transmission to the brain. What is perceived as noise is presented and the concept is extended to physical measurements. The interdisciplinary teaching process is focused on active learning through activities at school and outside performed with an open source software which allows to record sounds and analyze spectral components.
description: 5 pages, 5 figures, presented at the 18th edition of the Multimedia in Physics Teaching and Learning Workshop MPTL18, 11th-13th September 2013, Madrid, Spain
Zeeman-Sisyphus Deceleration for Heavy Molecules with Perturbed Excited-State Structure
Creators: name: Sawaoka, Hiromitsu
name: Frenett, Alexander
name: Nasir, Abdullah
name: Ono, Tasuku
name: Augenbraun, Benjamin L.
name: Steimle, Timothy C.
name: Doyle, John M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate and characterize Zeeman-Sisyphus (ZS) deceleration of a beam of ytterbium monohydroxide (YbOH). Our method uses a combination of large magnetic fields ($\sim$ 2.5 T) and optical spin-flip transitions to decelerate molecules while scattering only $\sim$ 10 photons per molecule. We study the challenges associated with the presence of internal molecular perturbations among the excited electronic states and discuss the methods used to overcome these challenges, including a modified ZS decelerator using microwave and optical transitions.
description: 9 pages, 3 figures, 1 table
Framing effects as a semantic puzzle: Putting the alignment-assumption account to a test
Creators: name: Claus, Berry
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: Framing effects are effects of linguistic variation (e.g. stating the amount of lives saved vs. lives lost) on judgments and decisions. This paper deals with a semantic-pragmatic account of framing effects as offered by Geurts’ (2013) alignment-assumption account. The account radically differs from extant accounts by explaining framing effects in terms of counterfactual alternatives and alignment of scales. I report two experiments that tested predictions derived from the alignment-assumption account and that related to the effect of upward- vs. downward entailing comparative quantifiers. The results provide preliminary experimental support for the alignment-assumption account and pose challenges for other accounts of framing effects.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Another look at superlative modifiers as modified superlatives
Creators: name: Chen, Yi-Hsun
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: This paper studies the morpho-semantic puzzle of superlative modifiers (SMs) where in many languages SMs typically involve a quantity adjective and a degree morpheme. This paper takes English at least as a case study and offers a decompositional analysis connecting its semantic properties with its morphological components. One central proposal is that SMs like at least can be structurally decomposed into three morphological pieces: a quantity adjective, a superlative and an existential operator. It is shown that the current analysis not only explains the role of the quantity adjective and degree morphology in the semantics of at least, but also captures two types of semantic parallels suggested in the literature on SMs: the parallel with disjunction and the parallel with epistemic indefinites.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
On annulus containing all the zeros of a polynomial
Creators: name: Rather, N. A.
name: Gulzar, Suhail
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30C10, 30C15

description: In this paper, we obtain an annulus containing all the zeros of the polynomial involving binomial coefficients and generalized Fibonacci numbers. Our result generalize some of the recently obtained results in this direction.
description: 4 pages
The evolution of adjectival monotonicity
Creators: name: Carcassi, Fausto
name: Schouwstra, Marieke
name: Kirby, Simon
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: A striking property of scalar adjectives is that they allow for inferences like the following: If John is tall, and Mary is taller than John, then Mary is tall. This inference can be made because if an individual falls in the extension of the adjective, then any individual that has the property to a greater degree also will. We call this universal of adjectival semantics monotonicity. In this paper, we present an evolutionary account of monotonicity and support it with three computational models. In the first model, we study which of the possible meanings of scalar adjectives evolve under a pressure for simplicity alone, and we observe degenerate meanings that are unlike natural language adjectives. In a second model, we combine the pressure for simplicity with a pressure for communicative accuracy. Under these pressures, mostly non-monotonic meanings evolve. In the third model, we equip the agents with pragmatic reasoning skills. In the third condition monotonic meanings prevail. We conclude that adjectival monotonicity is caused by a combined pressure for semantic simplicity and communicative accuracy, given human pragmatic skills.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Thermal conductivity of molecular crystals with self-organizing disorder
Creators: name: Krivchikov, A. I.
name: Vdovychenko, G. A.
name: Korolyuk, O. A.
name: Romantsova, O. O.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The thermal conductivity of some orientational glasses of protonated C2H5OH and deuterated C2D5OD ethanol, cyclic substances (cyclohexanol C6H11OH, cyanocyclohexane C6H11CN, cyclohexene C6H10), and freon 112 (CFCl2)2 have been analyzed in the temperature interval 2-130 K. The investigated substances demonstrate new effects concerned with the physics of disordered systems. Universal temperature dependences of the thermal conductivity of molecular orientational glasses have been revealed. At low temperatures, the thermal conductivity exhibits a universal behavior that can be described by the soft potential model. At relatively high temperatures, the thermal conductivity has a smeared maximum and than decreases with increase in the temperature, which occurs typically in crystalline structures.
Brownian particles in periodic potentials: coarse-graining versus fine structure
Creators: name: Defaveri, Lucianno
name: Barkai, Eli
name: Kessler, David A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the motion of an overdamped particle connected to a thermal heat bath in the presence of an external periodic potential in one dimension. When we coarse-grain, i.e., bin the particle positions using bin sizes that are larger than the periodicity of the potential, the packet of spreading particles, all starting from a common origin, converges to a normal distribution centered at the origin with a mean-squared displacement that grows as $2 D^* t$, with an effective diffusion constant that is smaller than that of a freely diffusing particle. We examine the interplay between this coarse-grained description and the fine structure of the density, which is given by the Boltzmann-Gibbs (BG) factor $e^{-V(x)/k_B T}$, the latter being non-normalizable. We explain this result and construct a theory of observables using the Fokker-Planck equation. These observables are classified as those that are related to the BG fine structure, like the energy or occupation times, while others, like the positional moments, for long times, converge to those of the large-scale description. Entropy falls into a special category as it has a coarse-grained and a fine structure description. The basic thermodynamic formula $F=TS - E$ is extended to this far-from-equilibrium system. The ergodic properties are also studied using tools from infinite ergodic theory.
description: 17 pages, 8 figures
Impactos Potenciales del Covid-19 sobre el Crecimiento Económico Colombiano
Creators: name: Puello Padilla, Humberto Luis
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Crecimiento económico
subject: Covid-19

description: La crisis económica global derivada del Covid-19 impuso numerosos retos a las autoridades de cada país; uno de ellos fue crear herramientas asociadas a un fenómeno epidemiológico como este, para identificar oportunamente los riesgos potenciales que atañen a las economías y su magnitud. En la presente investigación, a través de un algoritmo creado por Rungcharoenkitkul (2021) que involucra un modelo epidemiológico SEIR, logro estimar el impacto potencial del Covid- 19 sobre el Producto Interno Bruto (PIB) colombiano para finales del año 2022 bajo cuatro escenarios hipotéticos: un escenario base, una nueva ola de casos, un ritmo lento en vacunación y un escenario de reinfección. Los resultados arrojan impactos negativos sobre el PIB colombiano entre 1.6% y 6.25%. También, se agrega un apartado descriptivo-analítico para estudiar la relación de las condiciones generales que llevaron al inicio de la crisis y posteriormente al inicio de la recuperación económica.
Self-Censorship Under Law: A Case Study of the Hong Kong National Security Law
Creators: name: Wang, Mona
name: Mayer, Jonathan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: We study how legislation that restricts speech can induce online self-censorship and alter online discourse, using the recent Hong Kong national security law as a case study. We collect a dataset of 7 million historical Tweets from Hong Kong users, supplemented with historical snapshots of Tweet streams collected by other researchers. We compare online activity before and after enactment of the national security law, and we find that Hong Kong users demonstrate two types of self-censorship. First, Hong Kong users are more likely than a control group, sampled randomly from historical snapshots of Tweet streams, to remove past online activity. Specifically, Hong Kong users are over a third more likely than the control group to delete or restrict their account and over twice as likely to delete past posts. Second, we find that Hong Kong users post less often about politically sensitive topics that have been censored on social media in mainland China. This trend continues to increase.
title: Optimization of soil microbial fuel cell for sustainable bio-electricity production: combined effects of electrode material, electrode spacing, and substrate feeding frequency on power generation and microbial community diversity
Creators: name: Simeon, Imologie Meshack
name: Weig, Alfons
name: Freitag, Ruth
Publisher: name: University of Bayreuth
Year: 2022
Subjects: subject: Sustainable bio-electricity
subject: Soil microbial fuel cell
subject: Optimization
subject: Electrode spacing
subject: Material
subject: Substrate
subject: 620

description: Microbial fuel cells (MFCs) are among the leading research topics in the field of alternative energy sources due to their multifunctional potential. However, their low bio-energy production rate and unstable performance limit their application in the real world. Therefore, optimization is needed to deploy MFCs beyond laboratory-scale experiments. In this study, we investigated the combined influence of electrode material (EM), electrode spacing (ES), and substrate feeding interval (SFI) on microbial community diversity and the electrochemical behavior of a soil MFC (S-MFC) for sustainable bio-electricity generation.
Delayed teraelectronvolt emission from GRB 980425/SN 1998bw and the origin of ultra-high-energy cosmic rays
Creators: name: Mirabal, Nestor
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The origin of ultra-high-energy cosmic rays (UHECRs, E $> 10^{18}$ eV) is one of the great mysteries of modern astrophysics. It has been suggested that UHECRs could be accelerated in gamma-ray bursts (GRBs) and engine-driven supernovae (SNe). Here we report the discovery of a 1.4 teraelectronvolt (TeV) photon offset 0.97$^{\circ}$ from the site of the nearby (36.9 megaparsecs) GRB 980425/SN 1998bw explosion. The Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope detected the TeV emission on 17 November 2018, more than 20 years after the original GRB 980425/SN 1998bw trigger. TeV detections at high Galactic latitudes by the LAT are extremely rare, with an average of 6 events per year. We propose that the delayed TeV emission is consistent with ultra-high-energy cosmic rays and/or electron-positron pairs from GRB 980425/SN 1998bw being deflected by the intergalactic magnetic field (IGMF) and subsequently cascading into secondary gamma rays. Based on the arrival time delay of the TeV emission, we estimate an IGMF strength of order $B \simeq 10^{-12}$-$10^{-13}$ Gauss. This result supports the possibility of UHECR acceleration in GRB 980425/SN 1998bw and suggests that most detected UHECRs are produced in local GRB/SNe within 200 Mpc. In addition, secondary photons from UHECRs out to 0.9-31 Gpc may also offer an explanation for extragalactic background photons with energies $\geq 1$ TeV detected by the Fermi LAT.
description: 8 pages, 1 Figure, Accepted for publication in JCAP
P-HYPE: A monadic situation semantics for hyperintensional side effects
Creators: name: Burke, Luke
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: P-HYPE is a hyperintensional situation semantics in which hyperintensionality is modelled as a ‘side effect’, as this term has been understood in natural language semantics, Charlow (2014); Shan (2007), and in functional programming. We use monads from category theory in order to ‘upgrade’ an ordinary intensional semantics to a possible hyperintensional counterpart. Hyperintensional side effects are analysed as a special type of perspective sensitivity. We combine Asudeh and Giorgolo’s (2016) perspective sensitive semantic theory with a hyperintensional situation semantics, HYPE (Leitgeb, 2018), a logic with connections of Barwise and Perry’s (1983) situation semantics, truthmaker semantics (Fine, 2017) and data semantics (Veltman, 1985). P-HYPE builds on the account of Asudeh and Giorgolo (2016), by carving out a notion of perspectives as special sets of situations which can be combined together via a fusion relation. In addition, we are able to capture the utterer’s perspective on other people’s perspectives, a phenomenon that plays a role in Asudeh and Giorgolo (2016) but which is not formally defined by them.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Educar a las comunidades locales. Legislación educativa, escuelas y maestros en el estado de la Nueva Granada, 1832-1389.
Creators: name: Correa Martínez, Fernando
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Comunidad y educación
subject: Nueva granada (Colombia) - Historia siglo XIX
subject: Investigación historica

description: Este proyecto tiene como objeto estudiar los mecanismos legislativos y las prácticas educativas aplicadas por las autoridades republicanas y los amantes de la ilustración para conseguir la alfabetización de las comunidades locales por vía del establecimiento de Escuelas de primeras letras en el Estado de la Nueva Granada, entre 1832-1839. Aunque esta investigación es heredera de los trabajos que han abordado el fenómeno de las primeras letras desde los niveles provinciales, toma distancia de ellos en la medida en que analiza el fomento de la educación en un marco global; es decir, de la Nueva Granada como unidad política, sin desconocer el proceso de descentralización de la educación elemental en la primera mitad del siglo XIX que, por mandatos del ejecutivo se convirtió en un asunto administrado por las autoridades provinciales y parroquiales. A su vez, el trabajo pretende hacer una contribución al ramo de la historia social y cultural de la educación, línea de investigación que en el último tiempo se ha visto enriquecida por artículos, libros y capítulos de libros.
Spin and charge thermopower of resonant tunneling diodes
Creators: name: Nicolau, Javier H.
name: Sanchez, David
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate thermoelectric effects in quantum well systems. Using the scattering approach for coherent conductors, we calculate the thermocurrent and thermopower both in the spin-degenerate case and in the presence of giant Zeeman splitting due to magnetic interactions in the quantum well. We find that the thermoelectric current at linear response is maximal when the well level is aligned with the Fermi energy and is robust against thermal variations. Furthermore, our results show a spin voltage generation in response to the applied thermal bias, giving rise to large spin Seebeck effects tunable with external magnetic fields, quantum well tailoring and background temperature.
description: 4 pages, 3 figures; to appear in Appl. Phys. Lett
Antonio López de Santa Anna y su legado en Turbaco.
Creators: name: Payeras Fontalvo, Joseth Enrique
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Turbaco (Bolívar, Colombia) - Historia
subject: Investigación cualitativa - Análisis de datos
subject: Personajes Históricos

description: Este proyecto tiene como objeto el personaje Antonio López de Santa Anna, quien fue un político, militar y dictador mexicano que tuvo el cargo de presidente de México en seis ocasiones; por lo tanto, dominó casi medio siglo de vida nacional mexicana. Este personaje vivió dos periodos de su vida en Turbaco, de 1550 a 1553 y de 1556 a 1558; en los cuales ejecutó acciones en Turbaco que algunos consideran que fueron benéficas para esta población pero otros lo ponen en duda; lo que si es cierto es que este personaje mexicano marcó la historia de esta población dejando una huella que hoy, 150 años después, todavía está presente en los turbaqueros.
High-order conservative reconstruction schemes for finite volume methods in cylindrical and spherical coordinates
Creators: name: Mignone, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: High-order reconstruction schemes for the solution of hyperbolic conservation laws in orthogonal curvilinear coordinates are revised in the finite volume approach. The formulation employs a piecewise polynomial approximation to the zone-average values to reconstruct left and right interface states from within a computational zone to arbitrary order of accuracy by inverting a Vandermonde-like linear system of equations with spatially varying coefficients. The approach is general and can be used on uniform and non-uniform meshes although explicit expressions are derived for polynomials from second to fifth degree in cylindrical and spherical geometries with uniform grid spacing. It is shown that, in regions of large curvature, the resulting expressions differ considerably from their Cartesian counterparts and that the lack of such corrections can severely degrade the accuracy of the solution close to the coordinate origin. Limiting techniques and monotonicity constraints are revised for conventional reconstruction schemes, namely, the piecewise linear method (PLM), third-order weighted essentially non-oscillatory (WENO) scheme and the piecewise parabolic method (PPM). The performance of the improved reconstruction schemes is investigated in a number of selected numerical benchmarks involving the solution of both scalar and systems of nonlinear equations (such as the equations of gas dynamics and magnetohydrodynamics) in cylindrical and spherical geometries in one and two dimensions. Results confirm that the proposed approach yields considerably smaller errors, higher convergence rates and it avoid spurious numerical effects at a symmetry axis.
description: 37 pages, 12 Figures. Accepted for publication in Journal of Compuational Physics
The semantics of the (so-called) clausal determiner n´o in Akan (Kwa)
Creators: name: Bombi, Carla
name: Grubic, Mira
name: Renans, Agata
name: Duah, Reginald Akuoko
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: In Akan (Kwa), certain embedded clauses—relative clauses, clefts, temporal clauses, and subject CPs—can be followed by a determiner homophonous to the definite article nó. The prior literature considers this as part of a larger phenomenon of ‘clausal determiners’ attested in several Kwa languages. Some of these approaches analyse them unitarily as event determiners, which mark the event of the embedded clause as pre-mentioned or as mutually known (Akan: Boadi, 1974, Arkoh and Matthewson, 2013; Fòngbe: Larson, 2003; Gungbe: Aboh, 2005; Gã: Renans, 2016a, Grubic and Renans, 2016). Based on original fieldwork on no´ in relative clauses and cleft constructions, we argue against a unified analysis of clausal determiners as event determiners, showing that in relative clauses, the so-called clausal determiner operates at NP level, whereas this is not the case for cleft-nó.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Trabajo de grado modalidad articulo abastecimiento alimenticio de la ciudad de Cartagena de Indias durante el ataque de Vernon en 1741.
Creators: name: Babilonia González, Luis Eduardo
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Investigación historica
subject: Alimentos - Almacenamiento
subject: Vernon, Blas de, 1687-1741

description: Este proyecto tiene como objeto los hechos que ocurrieron en 1741 cuando la armada inglesa intento asediar y tomarse la ciudad de Cartagena de Indias al mando del vicealmirante Edward Vernon, no obstante, los resultados fueron nefastos, principalmente por las estrategias castrenses empleadas por los oficiales y tropas locales. En esta investigación me interesa analizar cómo la ciudad se abasteció en términos alimenticios durante los enfrentamientos, para esto, en primer lugar, explicaré un breve contexto y el estado militar en que se encontraba la plaza en conjunto de un análisis de Virrey Eslava para determinar si fue posible o no un proceso de abasto, en segundo lugar, identificaré los actores que intervienen en este proceso de abastecimiento, describiré los tipos de productos que ingresaron a la ciudad y los sitios que participaron en el socorro de la misma.
Nonuniform growth and topological defects in the shaping of elastic sheets
Creators: name: Bende, N. P.
name: Hayward, R. C.
name: Santangelo, C. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Programming the non-uniform growth of a responsive polymer gel has emerged as a powerful tool to shape sheets into prescribed three dimensional shapes. We demonstrate that shapes with zero Gaussian curvature, except at singularities, produced by the growth-induced buckling of a thin elastic sheet are the same as those produced by the Volterra construction of topological defects in which edges of an intrinsically flat surface are identified. With this connection, we study the problem of choosing an optimal pattern of growth for a prescribed developable surface, finding a fundamental trade-off between optimal design and the accuracy of the resulting shape which can be quantified by the length along which an edge should be identified.
description: 4 pages, 4 figures
Entanglement bipartitioning and tree tensor networks
Creators: name: Okunishi, Kouichi
name: Ueda, Hiroshi
name: Nishino, Tomotoshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose the entanglement bipartitioning approach to design an optimal network structure of the tree-tensor-network (TTN) for quantum many-body systems. Given an exact ground-state wavefunction, we perform sequential bipartitioning of spin-cluster nodes so as to minimize the mutual information or the maximum loss of the entanglement entropy associated with the branch to be bipartitioned. We demonstrate that entanglement bipartitioning of up to 16 sites gives rise to nontrivial tree network structures for $S=1/2$ Heisenberg models in one and two dimensions. The resulting TTNs enable us to obtain better variational energies, compared with standard TTNs such as uniform matrix product state and perfect-binary-tree tensor network.
description: 9 pages, 8 figures
As ifs
Creators: name: Bledin, Justin
name: Srinivas, Sadhwi
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: We provide an event semantic analysis of as if-phrases in manner reports and other modification uses on which these adjuncts contribute hypothetical comparative properties of eventualities. When combined with the dynamic verb dance, for instance, an as if-phrase expresses that the reported dancing event resembles in some relevant respect its counterparts in the most normal worlds described by the clause embedded under as if. Towards the end of the paper, we extend our analysis to as if-complements of copy raising verbs in perceptual resemblance reports.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Why is Black Hole Entropy Affected by Rotation?
Creators: name: McInnes, Brett
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is well known that an asymptotically flat four-dimensional Kerr black hole has a smaller (specific) entropy than a Schwarzschild black hole of the same mass. We show here that the same is true if the temperature, rather than the mass, is held fixed; and we also show that an asymptotically AdS$_5$-Kerr black hole has a smaller specific entropy than an AdS$_5$-Schwarzschild black hole of the same temperature, except in a negligibly small class of special examples. The AdS$_5$-Kerr case is particularly interesting, because here the gauge-gravity duality applies; if we further accept that there is a useful analogy between the strongly coupled field theories dual to AdS black holes and the best-understood example of a strongly coupled fluid (the Quark-Gluon Plasma), then we can apply QGP theory to predict the behaviour of black hole entropy in this case. The prediction agrees with our study of AdS$_5$-Kerr entropy. The hope is that such results might lead ultimately to an identification of black hole microstates.
description: Added a useful reference (arXiv:2010.03575 [hep-th]); 32 pages, 12 figures
Presupposing questions
Creators: name: Biezma, Mar´ıa
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: Utterances like and the parents are where? (declarative word-order, non-fronted wh-words, and a non-echo interpretation) in languages that in principle have obligatory wh-fronting present a challenge. I avoid ad-hoc stipulations by paying attention to the interplay between the semantics of the utterances and their dynamic update. I argue that, in English, such sentences are not interrogatives, but declaratives with vacuous content whose function is to indicate the speaker’s presupposition regarding the question to be answered. This system allows us to make predictions about their interpretation while keeping the semantics true to form.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Quejas y peticiones de los gobernadores de Cartagena de Indias Don Pedro de Lodeña y Don Pedro de Acuña, acerca de corsarios y fortificaciones 1586-1596.
Creators: name: Beltran Torres, Luis Fernando
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Investigación cualitativa - Análisis de datos
subject: Personajes Historicos - Colombia
subject: Cartagena de Indias (Colombia) - Historia
subject: Gobernadores - Critica e Interpretacion

description: Este proyecto tiene como eje central una compilación que contiene transcripciones documentales de cartas escritas por Don Pedro de Lodeña y Don Pedro de Acuña durante su periodo como gobernadores en la ciudad de Cartagena de Indias, que datan entre 1586 al 1599. En primera instancia, se presenta la biografía de los dichos gobernadores y algunas de las gestiones que adelantaron en sus periodos de gobierno, posterior a esto se presentan las transcripciones de una variedad de cartas que desarrollan temáticas sobre estrategias de defensa de la ciudad de Cartagena, tales como la fortificación de la plaza y el fortalecimiento de la ciudad con más hombres, mosquetes y arcabuces. Asimismo, las cartas brindan información sobre la constante amenaza que tenía la ciudad referente a los corsarios ingleses.
Pronouns, null arguments, and ellipsis in Mandarin Chinese
Creators: name: Bi, Ruyue Agnes
name: Jenks, Peter
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: This paper argues that both overt and null pronouns in Mandarin are the elliptical counterparts of corresponding overt noun phrases. Specifically, null pronouns are the pronominal counterparts of bare nouns, which are typically restricted to unique definite environments, while overt pronouns are the pronominal counterparts of demonstrative descriptions, which are typically restricted to anaphoric definite environments. This result provides support for a hypothesis we call Determiner-Pronoun Parallelism: the idea that a language’s pronominal inventory is isomorphic to its determiners used for the expression of definiteness distinctions.
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Face Recognition Methods & Applications
Creators: name: Parmar, Divyarajsinh N.
name: Mehta, Brijesh B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Face recognition presents a challenging problem in the field of image analysis and computer vision. The security of information is becoming very significant and difficult. Security cameras are presently common in airports, Offices, University, ATM, Bank and in any locations with a security system. Face recognition is a biometric system used to identify or verify a person from a digital image. Face Recognition system is used in security. Face recognition system should be able to automatically detect a face in an image. This involves extracts its features and then recognize it, regardless of lighting, expression, illumination, ageing, transformations (translate, rotate and scale image) and pose, which is a difficult task. This paper contains three sections. The first section describes the common methods like holistic matching method, feature extraction method and hybrid methods. The second section describes applications with examples and finally third section describes the future research directions of face recognition.
description: 3 pages, 1 figure
Overview of the Genomics Education Partnership
Creators: name: Sandlin, Katie
name: Leung, Wilson
name: Rele, Chinmay
name: Reed, Laura
Publisher: name: QUBES Educational Resources
Year: 2022

description: Poster exhibited at the National Association of Biology Teachers (NABT) 2022 conference providing an overview of the Genomics Education Partnership including its benefits to faculty, students, and institutions.
Splitting of a nondegenerate phonon mode in PrFe3(BO3)4: 4f crystal-field level between TO and LO phonon frequencies
Creators: name: Boldyrev, K. N.
name: Stanislavchuk, T. N.
name: Sirenko, A. A.
name: Bezmaternykh, L. N.
name: Popova, M. N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A new effect originating from the crystal-field-excitation - phonon coupling was observed (in the far infrared spectra of a multiferroic PrFe3(BO3)4). The reststrahlen band corresponding to the A2 symmetry nondegenerate phonon mode near 50 cm-1 (1.5 THz) splits into two bands at about 100 K, well above TN = 32 K. These bands shift and narrow progressively with further lowering the temperature, demonstrating pronounced peculiarities at TN. The observed effects were explained by an interaction of the A2 phonon mode with the 4f crystal-field electronic excitation of Pr3+ whose frequency falls into the TO - LO frequency region of the phonon mode. Inversion of the TO and LO frequencies for the electronic excitation and a formation of coupled electron-phonon modes are discussed. Fitting of the TO frequency vs temperature experimental plots by theoretical curves revealed the value 14.6 cm-1 for the electron-phonon coupling constant.
description: 5 pages, 3 figures
A possible electronic state quasi-half-valley-metal in $\mathrm{VGe_2P_4}$ monolayer
Creators: name: Guo, San-Dong
name: Tao, Yu-Ling
name: Zhao, Zhuo-Yan
name: Wang, Bing
name: Wang, Guangzhao
name: Wang, Xiaotian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: One of the key problems in valleytronics is to realize valley polarization. Ferrovalley (FV) semiconductor and half-valley-metal (HVM) have been proposed, which possess intrinsic spontaneous valley polarization. Here, we propose the concept of quasi-half-valley-metal (QHVM), including electron and hole carriers with only a type of carriers being valley polarized. The QHVM may realize separation function of electron and hole. A concrete example of $\mathrm{VGe_2P_4}$ monolayer is used to illustrate our proposal through the first-principle calculations. To better realize QHVM, the electric field is applied to tune related valley properties of $\mathrm{VGe_2P_4}$. Within considered electric field range, $\mathrm{VGe_2P_4}$ is always ferromagnetic (FM) ground state, which possesses out-of-plane magnetization by calculating magnetic anisotropy energy (MAE) including magnetic shape anisotropy (MSA) and magnetocrystalline anisotropy (MCA) energies. These out-of-plane FM properties guarantee intrinsic spontaneous valley polarization in $\mathrm{VGe_2P_4}$. Within a certain range of electric field, the QHVM can be maintained, and the related polarization properties can be effectively tuned. Our works pave the way toward two-dimensional (2D) functional materials design of valleytronics.
description: 8 pages, 10 figures. arXiv admin note: text overlap with arXiv:2208.02425
The role of the particle -oo in wh-exclamatives in Telugu and Kannada
Creators: name: Balusu, Rahul
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: A non-degree approach like d’Avis (2002) doesn’t work for degree readings of wh-exclamatives since it is based on a Groenendijk and Stokhof (1984) denotation of questions. The Widening account of Zannutini and Portner (2003) doesn’t work for individual/event read- ings of wh-exclamatives because of a Karttunen (1977) denotation of questions. Degree deno- tation approaches to wh-exclamatives can’t explain the variability either. We propose a solution such that the widening account works if we start with Hamblin alternatives. Evidence for the widening mechanism comes from wh-exclamatives in Telugu/Kannada –the particle -oo which imposes a join requirement on the semantic content of its immediate context (Szabolcsi 2015). We propose that the semantic/pragmatic mechanism of wh-exclamatives involves the following three steps –Generating alternatives: wh-focus or other focus mechanisms; Scale to order the alternatives: lexical degree scale/degree morpheme or a likelihood scale; Widening & Dynamic update: Widening of domain from ES to D2 and Add {p} to FCspkr .
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Reverse proportionality without context dependent standards
Creators: name: Bale, Alan
name: Schwarz, Bernhard
Publisher: name: Proceedings of Sinn und Bedeutung
Year: 2019

description: In the so-called reverse proportional reading (Herburger, 1997), the truth conditions of statements of the form many/few Φ ψ appear to make reference to the ratio of the individuals that are in the extensions of both Φ and ψ to the individuals that are in the extension of ψ . The analysis of such readings is controversial. One prominent approach (Büring, 1996; de Hoop and Solà, 1996; Romero, 2015, 2016; Solt, 2009) assumes that they are a symptom of many and few making reference to a context dependent standard of comparison. Elaborating on remarks in Partee (1989), we observe that this initially attractive approach systematically undergenerates, failing to capture pervasive reverse proportionality in environments that remove context dependency of the standard. Instead, we propose that reverse proportionality in such cases reflects the underspecification of the measure function underlying the meanings of many and few (Bale and Barner, 2009; Wellwood, 2014; Solt, 2018).
description: Proceedings of Sinn und Bedeutung, Vol 23 No 1 (2019): Proceedings of Sinn und Bedeutung 23
Entre la representación mercantil y los conflictos jurisdiccionales: del tribunal de comercio al consulado de comercio de Cartagena de Indias entre 1756-1795.
Creators: name: Pinzón Narváez, Meliza Vanessa
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Comercio - Cartagena
subject: Investigación historica
subject: Mercancias - Legislación - Colombia

description: Este proyecto tiene como objeto realizar un aporte a los estudios históricos, abordando el problema referido al proceso de gestión de los comerciantes de Cartagena para adquirir el establecimiento del Tribunal de Comercio en 1760 y posteriormente del Consulado como corporación privilegiada en 1795. Para ello, se tendrá en cuenta que el colectivo de comerciantes no fue un grupo cerrado, que tuvieron intereses cambiantes de acuerdo con las circunstancias y las coyunturas, moviéndose a lo largo de sus vidas de una esfera a otra actividad , intentando mantener privilegios jurisdiccionales expresados en las diferencias entre comerciantes vecinos y residentes en la ciudad, lo cual influyó en el establecimiento de ambas instituciones. El modelo teórico que inspira mi investigación es el de la historia económica y social neoinstitucional. Según Douglas North, uno de los principales inspiradores del neoinstitucionalismo, las instituciones contribuyen a reducir los riesgos e incertidumbres generado por el incremento de los costos de transacción, es decir, el valor agregado a las transacciones al que debían hacer frente los comerciantes para obtener los resultados esperados, en el cual influían aspectos como el tiempo, el conocimiento y los riesgos .