cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Use of Synthetic Water Quality Index (SWQI) for water pollution control in springs of Gijon municipality in Northwestern Spain.
Creators: name: Sierra, Antonio Luis Marques
name: Garcia, Efren
name: Loredo, Jorge
Publisher: name: figshare
Year: 2019
Subjects: subject: 90508 Water Quality Engineering
subject: FOS: Civil engineering

description: The presence of pollutants in several springs of Gijón municipality in northern Spain
has led to accomplish a study to evaluate water quality in the aquifer system. The existence of previous analysis indicating high concentrations of mercury alerted about a potential water pollution of springs in the area. According to previous data, water pollution seems to affect only to springs in Ordovician materials. Some of the springs affected are classified as mineral medicinal water in the bibliography, and they are frequently used for human consumption. Hydrochemical analyses show a great dispersion of data, so the development of a particular methodology for data treatment will be necessary. For these purposes, the application of a single index (SWQI) to show the evolution of water quality is proposed in this paper. By the application of a robust algorithm, the proposed index measures the evolution of water quality according to its use for each parameter used to define the algorithm.
Le Contrôle de Gestion dans les Start-ups :  Entre agilité innovante et nécessités structurantes
Creators: name: NAFZAOUI, Mohammed Achraf
name: ETTAKANI, Doha
Publisher: name: Zenodo
Year: 2024
Subjects: Innovation ; contrôle de gestion ; Start up ; performance ; Structures organisationnelles

description: L'objectif de cet article est d'explorer comment le contrôle de gestion interagit avec l'innovation dans des contextes organisationnels variés, en mettant particulièrement l'accent sur les jeunes entreprises et les petites entités, soulignant l'importance de comprendre les caractéristiques uniques de ces systèmes pour structurer efficacement ces organisations. L'analyse met en lumière la relation complexe entre le contrôle de gestion et l'innovation, tout en offrant des perspectives sur les défis et opportunités pour les start-ups dans la mise en œuvre de mécanismes de contrôle de gestion favorisant l'innovation et la croissance durable.
Self-Similar Equilibria of Self-Gravitating, Magnetized, Rotating, Isothermal Systems
Creators: name: Shadmehri, Mohsen
name: Ghanbari, Jamshid
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The self-similar equilibrium models of self-gravitating, rotating, isothermal systems are investigated analytically. In these models the rotation velocity is constant and the density varies as $\frac{f(θ, ϕ)}{r^2}$, where $r$ and $θ$ are the spherical radius and the co-latitude, respectively. The nonaxisymmetric solutions contain three free parameters, one of the parameters depends on the rotation velocity. These parameters determine the overall shape of the density distribution. By assuming that the dominant component of the magnetic field is purely toroidal and the ratio of the purely toroidal magnetic pressure to the gas pressure, $α$, is spatially constant, the axisymmetric solutions generalized so as the effect of magnetic field could be studied. We find that the equilibria of axially symmetric systems yield ellipsoids or spheres only when the ratio of rotation velocity to the sound speed is taken to be $\sqrt{2α}$.
description: 8 pages, Revised version, To appear in ApJ (Jul 20, 2001)
Job vacancy: Community Researcher and Programme Coordinator - OLS is hiring!
Creators: name: Yehudi, Yo
name: Sharan, Malvika
name: Tsang, Emmy
name: Batut, Bérénice
name: Mosbergen, Rowland
Publisher: name: Zenodo
Year: 2022
Subjects: open science
recruitment
inclusion

description: Job advert designed to be part of a highly inclusive recruitment process, offering as much flexibility as possible and a pleasant experience for applicants.

 

OLS would like to thank Alex Kutschera, Andre Chagas, Anelda van der Walt, Hao Ye, Jez Cope, Julieta Arancio, Mallory Freeberg, Manuel Spitschan and Rowland Mosbergen for their thoughtful contribution to this job description.
An anomalous alloy: Y_x Si_{1-x}
Creators: name: Meregalli, V.
name: Parrinello, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study via density functional-based molecular dynamics the structural and dynamical properties of the rare earth silicon amorphous alloy Y_xSi_{1-x} for x=0.093 and x=0.156. The Si network forms cavities in which a Y^{3+} cation is entrapped. Its electrons are transferred to the Si network and are located in the dangling bonds of the Si atoms that line the Y cavities. This leads to the presence of low coordinated Si atoms that can be described as monovalent or divalent anions. For x=0.156, the cavities touch each other and share Si atoms that have two dangling bonds. The vibrational spectrum is similar to that of amorphous Si. However, doping induces a shoulder at 70 cm^{-1} and a pronounced peak at 180 cm^{-1} due to low coordinated Si.
description: 4 pages, 4 figures
Job vacancy: Community Researcher and Programme Coordinator - OLS is hiring!
Creators: name: Yehudi, Yo
name: Sharan, Malvika
name: Tsang, Emmy
name: Batut, Bérénice
name: Mosbergen, Rowland
Publisher: name: Zenodo
Year: 2022
Subjects: open science
recruitment
inclusion

description: Job advert designed to be part of a highly inclusive recruitment process, offering as much flexibility as possible and a pleasant experience for applicants. OLS would like to thank Alex Kutschera, Andre Chagas, Anelda van der Walt, Hao Ye, Jez Cope, Julieta Arancio, Mallory Freeberg, Manuel Spitschan and Rowland Mosbergen for their thoughtful contribution to this job description.
Including off-diagonal anisotropies in anisotropic hydrodynamics
Creators: name: Nopoush, Mohammad
name: Strickland, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we present a method for efficiently including the effects of off-diagonal local rest frame momentum anisotropies in leading-order anisotropic hydrodynamics. The method relies on diagonalization of the space-like block of the anisotropy tensor and allows one to reduce the necessary moments of the distribution function in the off-diagonal case to a linear combination of diagonal-anisotropy integrals. Once reduced to diagonal-anisotropy integrals, the results can be computed efficiently using techniques described previously in the literature. We present a general framework for how to accomplish this and provide examples for off-diagonal anisotropy moments entering into the energy-momentum tensor and viscous update equations which emerge when performing anisotropic pressure matching.
description: 17 pages; v3 - improvement made to discussion
Photoproduction of the double $J/ψ$ ($Υ$) at the LHC with forward proton tagging
Creators: name: Xue-An, Pan
name: Gang, Li
name: Mao, Song
name: Yu, Zhang
name: Hao, Sun
name: Jian-You, Guo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the photoproduction of double $J/ψ$ ($Υ$) to leading order based on the nonrelativistic quantum chromodynamics factorization framework at the Large Hadron Collider with forward proton tagging. The numerical results of double $J/ψ$ photoproduction pp $\rightarrow$ p$γ$p $\rightarrow$ $J/ψ$ + $J/ψ$ with different forward detector acceptances ($ξ$) are presented. The total cross section of double $J/ψ$ photoproduction is less than 200 fb with 0.1 $
description: 11 pages, 7 figures, version as it appears in Phys.Rev.D
Recuperación de terrenos contaminados con arsénico en antiguos emplazamientos mineros e industriales
Creators: name: Gallego, José Luis Rodríguez
name: T. Rodríguez
name: Rodríguez-Valdés, Eduardo
name: González, Adela
name: Bertrand, Anne
name: A.I. Peláez
name: Sastre, Herminio
name: Alvarez, Rodrigo
name: Sierra, Antonio Luis Marques
name: M.Á. Álvarez
name: Colina, Arturo
name: P.L. Álvarez
name: L.M. Álvarez
name: A. Vázquez
name: E. Suarez
Publisher: name: figshare
Year: 2019
Subjects: subject: 50206 Environmental Monitoring
subject: FOS: Earth and related environmental sciences
subject: Environmental Science
subject: 50207 Environmental Rehabilitation (excl. Bioremediation)
subject: 90703 Environmental Technologies
subject: FOS: Environmental engineering
subject: 90701 Environmental Engineering Design

description: Recuperar un suelo que durante décadas ha albergado una actividad contaminante implica un proceso largo, complejo y caro que en muchas ocasiones resulta difícil de afrontar para empresas o administraciones públicas. En este contexto, investigadores de la Universidad de Oviedo (UO) lideran un proyecto europeo que pretende evaluar y perfeccionar la aplicación de diversas tecnologías a la recuperación de suelos contaminados por arsénico y metales pesados.
The Chemical Space of B, N-substituted Polycyclic Aromatic Hydrocarbons: Combinatorial Enumeration and High-Throughput First-Principles Modeling
Creators: name: Chakraborty, Sabyasachi
name: Kayastha, Prakriti
name: Ramakrishnan, Raghunathan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Combinatorial introduction of heteroatoms in the two-dimensional framework of aromatic hydrocarbons opens up possibilities to design compound libraries exhibiting desirable photovoltaic and photochemical properties. Exhaustive enumeration and first-principles characterization of this chemical space provide indispensable insights for rational compound design strategies. Here, for the smallest seventy-seven Kekulean-benzenoid polycyclic systems, we reveal combinatorial substitution of C atom pairs with the isosteric and isoelectronic B, N pairs to result in 7,453,041,547,842 (7.4 tera) unique molecules. We present comprehensive frequency distributions of this chemical space, analyze trends and discuss a symmetry-controlled selectivity manifestable in synthesis product-yield. Furthermore, by performing high-throughput ab initio density functional theory calculations of over thirty-three thousand (33k) representative molecules, we discuss quantitative trends in the structural stability and inter-property relationships across heteroarenes. Our results indicate a significant fraction of the 33k molecules to be electronically active in the 1.5-2.5 eV region, encompassing the most intense region of the solar spectrum, indicating their suitability as potential light-harvesting molecular components in photo-catalyzed solar cells.
Screening of electrostatic potential in a composite fermion system
Creators: name: Fil, D. V.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Screening of the electric field of a test charge by monolayer and double-layer composite fermion systems is considered. It is shown that the electric field of the test charge is partly screened at distances much large then the magnetic length. The value of screening as a function of the distance depends considerably on the filling factor. The effect of variation of the value of screening in the double-layer system upon a transition to a state described by the Halperin wave function is determined.
description: 5 pages, 2 eps figures included
Charge transport in oxygen-deficient EuTiO$_3$: the emerging picture of dilute metallicity in quantum-paraelectric perovskite oxides
Creators: name: Engelmayer, Johannes
name: Lin, Xiao
name: Grams, Christoph P.
name: German, Raphael
name: Fröhlich, Tobias
name: Hemberger, Joachim
name: Behnia, Kamran
name: Lorenz, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on a study of charge transport in EuTiO$_{3-δ}$ single crystals with carrier density tuned across several orders of magnitude. Comparing this system with other quasi-cubic perovskites, in particular strontium titanate, we draw a comprehensive picture of metal-insulator transition and dilute metallicity in this $AB$O$_3$ family. Because of a lower electric permittivity, the metal-insulator transition in EuTiO$_{3-δ}$ occurs at higher carrier densities compared to SrTiO$_3$. At low temperature, a distinct $T^2$ resistivity is visible. Its prefactor $A$ smoothly decreases with increasing carrier concentration in a similar manner in three different perovskites. Our results draw a comprehensive picture of charge transport in doped quantum paraelectrics.
description: 7 pages, 5 figures (V2 contains a revised discussion of the structural phase transition)
X-ray Emitting QSOs Ejected from Arp 220
Creators: name: Arp, H. C.
name: Burbidge, E. M.
name: Chu, Y.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Four compact ROSAT X-ray sources very close to the nearby ultraluminous infrared galaxy Arp 220 (IC 4553) have been identified as medium-redshift QSOs. The closest pair lying symmetrically across the galaxy have almost identical redshifts z = 1.25, 1.26. All of the evidence suggests that these QSOs have been ejected from Arp 220 and have large intrinsic redshifts.
description: submitted to ApJ Letters, Figs. 1-3 included as JPEG
A snapshot on nonstandard supervised learning problems: taxonomy, relationships and methods
Creators: name: Charte, David
name: Charte, Francisco
name: García, Salvador
name: Herrera, Francisco
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: 68T05, 68T10

description: Machine learning is a field which studies how machines can alter and adapt their behavior, improving their actions according to the information they are given. This field is subdivided into multiple areas, among which the best known are supervised learning (e.g. classification and regression) and unsupervised learning (e.g. clustering and association rules). Within supervised learning, most studies and research are focused on well known standard tasks, such as binary classification, multiclass classification and regression with one dependent variable. However, there are many other less known problems. These are what we generically call nonstandard supervised learning problems. The literature about them is much more sparse, and each study is directed to a specific task. Therefore, the definitions, relations and applications of this kind of learners are hard to find. The goal of this paper is to provide the reader with a broad view on the distinct variations of nonstandard supervised problems. A comprehensive taxonomy summarizing their traits is proposed. A review of the common approaches followed to accomplish them and their main applications is provided as well.
El Efecto NIMBY: causas, consecuencias y soluciones en minería
Creators: name: Sierra, Antonio Luis Marques
name: Cienfuegos, Pablo
name: Gonzalez, Lara
Publisher: name: figshare
Year: 2019
Subjects: subject: 91405 Mining Engineering
subject: FOS: Environmental engineering
subject: 160512 Social Policy
subject: FOS: Political science
subject: 170113 Social and Community Psychology
subject: FOS: Psychology
subject: 160801 Applied Sociology, Program Evaluation and Social Impact Assessment
subject: FOS: Sociology

description: En el mundo anglosajón se ha bautizado como "Efecto NIMBY" a un fenómeno acentuado en los últimos años. Estas siglas corresponden a la frase "Not In My BackYard", traducido en castellano como "no en mi patio trasero". La paradoja de este fenómeno reside en que los ciudadanos quieren las comodidades de las sociedades modernas, pero
no desean en las cercanías de sus domicilios cualquier posible molestia derivada de ellas. En este trabajo se profundizara en las causas efectos y posibles soluciones que el efecto NIMBY tiene en la minería.
Localization and Mobility Edge in One-Dimensional Potentials with Correlated Disorder
Creators: name: Izrailev, F. M.
name: Krokhin, A. A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We show that a mobility edge exists in 1D random potentials provided specific long-range correlations. Our approach is based on the relation between binary correlator of a site potential and the localization length. We give the algorithm to construct numerically potentials with mobility edge at any given energy inside allowed zone. Another natural way to generate such potentials is to use chaotic trajectories of non-linear maps. Our numerical calculations for few particular potentials demonstrate the presence of mobility edges in 1D geometry.
description: 4 pages in RevTex and 2 Postscript figures; revised version published in Phys. Rev. Lett. 82 (1999) 4062
Diseño y optimización de redes de monitorización con apoyo de programas informáticos: Ventajas, inconvenientes y limitaciones. Aplicación a un caso de estudio
Creators: name: Sierra, Antonio Luis Marques
name: Cienfuegos, Pablo
name: Loredo, Jorge
Publisher: name: figshare
Year: 2019
Subjects: subject: 90509 Water Resources Engineering
subject: FOS: Civil engineering
subject: 40608 Surfacewater Hydrology
subject: FOS: Earth and related environmental sciences

description: El diseño de redes basado en la modelización del flujo subterráneo es una
herramienta básica en la monitorización de las aguas subterráneas. La idea
principal es la optimización de tiempo y recursos durante las operaciones de
monitorización, con la obtención de datos de calidad en cantidad suficiente
para los estudios a realizar, especialmente en terrenos contaminados. Es
esencial calibrar adecuadamente el tiempo invertido en el diseño de la red de
monitorización y adecuarlo a los resultados esperados.
En el mercado se encuentran innumerables programas que permiten abordar el problema, tanto de pago como gratuitos; de entre todos ellos el OWL se muestra como una herramienta sencilla, que permite una primera aproximación al problema del diseño de redes de control. En la presente comunicación se muestra mediante un caso de estudio las ventajas, inconvenientes y limitaciones que ofrece el programa, comparándolo con otros disponibles en el mercado.
La zona estudiada es un terreno contaminado que fue ocupado por una instalación industrial por mas de 70 años en el noroeste de España, en el que se tratado de optimizar la red de monitorización de las aguas subterráneas, con el
fin de maximizar la calidad de los datos con un mínimo de pozos de control.
Xorshift1024*, Xorshift1024+, Xorshift128+ and Xoroshiro128+ Fail Statistical Tests for Linearity
Creators: name: Lemire, Daniel
name: O'Neill, Melissa E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: L'Ecuyer & Simard's Big Crush statistical test suite has revealed statistical flaws in many popular random number generators including Marsaglia's Xorshift generators. Vigna recently proposed some 64-bit variations on the Xorshift scheme that are further scrambled (i.e., Xorshift1024*, Xorshift1024+, Xorshift128+, Xoroshiro128+). Unlike their unscrambled counterparts, they pass Big Crush when interleaving blocks of 32 bits for each 64-bit word (most significant, least significant, most significant, least significant, etc.). We report that these scrambled generators systematically fail Big Crush---specifically the linear-complexity and matrix-rank tests that detect linearity---when taking the 32 lowest-order bits in reverse order from each 64-bit word.
Indicios de hidrocarburos “on-shore” en Asturias
Creators: name: Cienfuegos, Pablo
name: Sierra, Antonio Luis Marques
name: Loredo, Jorge
name: Pendas, Fernando
Publisher: name: figshare
Year: 2019
Subjects: subject: 40309 Petroleum and Coal Geology
subject: FOS: Earth and related environmental sciences
subject: 91406 Petroleum and Reservoir Engineering
subject: FOS: Environmental engineering

description: En Asturias yacen materiales que están contrastados como generadores de hidrocarburos, aunque la acumulación en
rocas almacén tradicionales no ha sido muy favorable. Se exploró fundamentalmente en la plataforma costera y los
pozos suministraron numerosos indicios de gas y de petróleo. Pero los indicios de hidrocarburos en Asturias son
anteriores. Desde antiguo se sufre la presencia de gas grisú (metano, con trazas de etano, etcétera) en las minas de
carbón y, en especial, en el yacimiento de la Cuenca carbonífera Central Asturiana (CCCA). En las rocas encajantes y en las capas de carbón se ha observado, asimismo, la presencia de aceites minerales, destilados o condensados, restos de parafinas, ozoqueritas, etcétera. Todas estas manifestaciones de hidrocarburos sólidos, líquidos y gaseosos demuestran que los materiales carboníferos y mesozoicos constituyen una roca madre.
Finite volume flows and Morse theory
Creators: name: Harvey, F. Reese
name: Lawson,, H. Blaine
Publisher: name: arXiv
Year: 2001
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper we present a new approach to Morse theory based on the de Rham-Federer theory of currents. The full classical theory is derived in a transparent way. The methods carry over uniformly to the equivariant and the holomorphic settings. Moreover, the methods are substantially stronger than the classical ones and have interesting applications to geometry. They lead, for example, to formulae relating characteristic forms and singularities of bundle maps.
description: 25 pages, published version
A non trivial extension of the two-dimensional Ising model: the d-dimensional "molecular" model
Creators: name: Siringo, Fabio
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A recently proposed molecular model is discussed as a non-trivial extension of the Ising model. For d=2 the two models are shown to be equivalent, while for d>2 the molecular model describes a peculiar second order transition from an isotropic high temperature phase to a low-dimensional anisotropic low temperature state. The general mean field analysis is compared with the results achieved by a variational Migdal-Kadanoff real space renormalization group method and by standard Monte Carlo sampling for d=3. By finite size scaling the critical exponent has been found to be 0.44\pm 0.02 thus establishing that the molecular model does not belong to the universality class of the Ising model for d>2.
description: 25 pages, 5 figures
Identification of particles with Lorentz factor up to $10^{4}$ with Transition Radiation Detectors based on micro-strip silicon detectors
Creators: name: Alozy, J.
name: Belyaev, N.
name: Campbell, M.
name: Cherry, M.
name: Dachs, F.
name: Doronin, S.
name: Filippov, K.
name: Fusco, P.
name: Gargano, F.
name: Heijne, E.
name: Konovalov, S.
name: Krasnopevtsev, D.
name: Llopart, X.
name: Loparco, F.
name: Mascagna, V.
name: Mazziotta, M. N.
name: Pernegger, H.
name: Ponomarenko, D.
name: Prest, M.
name: Pyatiizbyantseva, D.
name: Radomskii, R.
name: Rembser, C.
name: Romaniouk, A.
name: Savchenko, A. A.
name: Schaefer, D.
name: Schioppa, E. J.
name: Shchukin, D.
name: Sergeeva, D. Yu
name: Shulga, E.
name: Smirnov, S.
name: Smirnov, Y.
name: Soldani, M.
name: Spinelli, P.
name: Strikhanov, M.
name: Teterin, P.
name: Tikhomirov, V.
name: Tishchenko, A. A.
name: Vallazza, E.
name: van Beuzekom, M.
name: van der Heijden, B.
name: Vorobev, K.
name: Zhukov, K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: This work is dedicated to the study of a technique for hadron identification in the TeV momentum range, based on the simultaneous measurement of the energies and of the emission angles of the Transition Radiation (TR) X-rays with respect to the radiating particles. A detector setup has been built and tested with particles in a wide range of Lorentz factors (from about $10^3$ to about $4 \times 10^4$ crossing different types of radiators. The measured double-differential (in energy and angle) spectra of the TR photons are in a reasonably good agreement with TR simulation predictions.
description: 31 pages, 12 figures, paper published on Nuclear Instruments & Methods A
Aportes de la hidroquímica en la prospección de CBM
Creators: name: Cienfuegos, Pablo
name: Ordoñez, Almudena
name: Alvarez, Rodrigo
name: Sierra, Antonio Luis Marques
name: Garcia, Efren
name: Loredo, Jorge
name: Pendas, Fernando
name: Rocio Garcia
Publisher: name: figshare
Year: 2019
Subjects: subject: 40309 Petroleum and Coal Geology
subject: FOS: Earth and related environmental sciences
subject: 91406 Petroleum and Reservoir Engineering
subject: FOS: Environmental engineering

description: En la actualidad, el conocimiento sobre la hidrología de las cuencas carboníferas y su relación con la explotabilidad
del CBM es inexistente. Localmente, su importancia es evidente por la necesidad de deprimir el nivel piezométrico
con el objeto de favorecer la desorción del gas contendido en la capa de carbón. Sin embargo, exceptuando esta
asociación, pocas asociaciones se han establecido entre el régimen hidrogeológico y la explotabilidad del CBM. Los
procesos geoquímicos inherentes con las condiciones de generación y yacimiento del metano modifica la calidad del
agua subterránea a un tipo distintivo que es fácilmente reconocible. La firma geoquímica del agua producida durante la extracción del CBM puede ser un criterio útil en las evaluaciones preliminares de prospectos cuando amplios conjuntos de datos estén disponibles. Esto puede ser importante, sin embargo, en el diseño y duración de los ensayos de bombeo y en la selección de los consiguientes emplazamientos de los pozos de explotación.
Generalized uncertainty principle in graphene
Creators: name: Iorio, Alfredo
name: Pais, Pablo
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We show that, by going beyond the low-energy approximation for which the dispersion relations of graphene are linear, the corresponding emergent field theory is a specific generalization a Dirac field theory. The generalized Dirac Hamiltonians one obtains are those compatible with specific generalizations of the uncertainty principle. We also briefly comment on the compatibility of the latter with noncommuting positions, $[x_i,x_j] \neq 0$, and on their possible physical realization.
description: 11 pages, 1 figure. Work Prepared for the Proceedings of DICE 2018 Workshop held at Toscana, Italy
Shot noise suppression in multimode ballistic Fermi conductors
Creators: name: Naveh, Y.
name: Korotkov, A. N.
name: Likharev, K. K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have derived a general formula describing current noise in multimode ballistic channels connecting source and drain electrodes with Fermi electron gas. In particular (at $eV\gg k_{B}T$), the expression describes the nonequilibrium ''shot'' noise, which may be suppressed by both Fermi correlations and space charge screening. The general formula has been applied to an approximate model of a 2D nanoscale, ballistic MOSFET. At large negative gate voltages, when the density of electrons in the channel is small, shot noise spectral density $S_{I}(0)$ approaches the Schottky value $2eI$, where $I$ is the average current. However, at positive gate voltages, when the maximum potential energy in the channel is below the Fermi level of the electron source, the noise can be at least an order of magnitude smaller than the Schottky value, mostly due to Fermi effects.
description: 4 pages
Period functions for Maass wave forms. I
Creators: name: Lewis, J.
name: Zagier, D.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Recall that a Maass wave form on the full modular group Gamma=PSL(2,Z) is a smooth gamma-invariant function u from the upper half-plane H = {x+iy | y>0} to C which is small as y \to \infty and satisfies Delta u = lambda u for some lambda \in C, where Delta = y^2(d^2/dx^2 + d^2/dy^2) is the hyperbolic Laplacian. These functions give a basis for L_2 on the modular surface Gamma\H, with the usual trigonometric waveforms on the torus R^2/Z^2, which are also (for this surface) both the Fourier building blocks for L_2 and eigenfunctions of the Laplacian. Although therefore very basic objects, Maass forms nevertheless still remain mysteriously elusive fifty years after their discovery; in particular, no explicit construction exists for any of these functions for the full modular group. The basic information about them (e.g. their existence and the density of the eigenvalues) comes mostly from the Selberg trace formula: the rest is conjectural with support from extensive numerical computations.
description: 68 pages, published version
GEANT4 models of HPGe detectors for radioassay
Creators: name: Tsang, R. H. M.
name: Piepke, A.
name: Auty, D. J.
name: Cleveland, B.
name: Delaquis, S.
name: Didberidze, T.
name: MacLellan, R.
name: Meng, Y.
name: Nusair, O.
name: Tolba, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Radiation transport models of two high purity germanium detectors, GeII and GeIII, located at the University of Alabama have been created in GEANT4 \cite{geant4}. These detectors have been used extensively for radioassay measurements of materials used in various low background experiments. The two models have been validated against actual data under several scenarios typically seen in radioassay measurements. The systematic uncertainties of the models for GeII and GeIII are estimated to be $\sim$12\% and $\sim$9\% respectively.
description: 24 pages
Table S1. from Mechanical properties of a female reproductive tract of a beetle and implications for penile penetration
Creators: name: Matsumura, Yoko
name: Kovalev, Alexander
name: Gorb, Stanislav N.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Biological Engineering
subject: 110601 Biomechanics
subject: FOS: Health sciences

description: Calculations of the flexural rigidity of the spermathecal duct.
Co-operative influence of co-crystallized solvent in sustaining supramolecular architectures of Zn(II)/Cd(II) homoleptic pyridyl functionalized dithiocarbamates complexes via non-covalent interactions
Creators: name: Kumar, Vinod
name: Singh, Suryabhan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Biophysics
Biochemistry
Space Science
Chemical Sciences not elsewhere classified
Mental Health

description: Homoleptic pyridyl-3(N) functionalized dithiocarbamate complexes namely, [Zn(L1)2]2 1 (L1 = (C5H4NCH2)2NCS2) and [Cd(L2)2] ∞ 2 (L2 = CH3C6H4CH2NCS2CH2C4H3O) have been synthesized and characterized by elemental analysis and different spectroscopic techniques. Single crystal structural studies reveal that compound 1 is binuclear while, 2 is polymeric structure. The presence of weak interactions between complexes and solvent molecules in the lattice results in one-dimensional and three-dimensional supramolecular structures of 1 and 2 respectively. In the case of complex 2, a rare and significant S···Cl chalcogen bonding interaction was found, which involve the solvent molecule in chain motifs. Complex 2 is a unique example of homoleptic metal dithiocarbamate complexes exhibiting such types of interactions. Complexes showed emission in the solid state. The TGA studies of complexes revealed that complex 1 would be a good precursor for the preparation of ZnS thin film via metal organic chemical vapor deposition (MOCVD).
Environmental assessment in the abandoned Hg mine site of La Campa del Trave (Asturias, Spain)
Creators: name: Martínez, Alfonso
name: Garcia, Efren
name: Sierra, Antonio Luis Marques
name: Loredo, Jorge
Publisher: name: figshare
Year: 2019
Subjects: subject: 50204 Environmental Impact Assessment
subject: FOS: Earth and related environmental sciences
subject: 49999 Earth Sciences not elsewhere classified
subject: 91405 Mining Engineering
subject: FOS: Environmental engineering

description: Environmental assessment in the abandoned Hg mine site of La Campa del Trave (Asturias, Spain)
A Parallel Time-Integrator for Solving the Linearized Shallow Water Equations on the Rotating Sphere
Creators: name: Schreiber, Martin
name: Loft, Richard
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Performance (cs.PF)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: With the stagnation of processor core performance, further reductions in the time-to-solution for geophysical fluid problems are becoming increasingly difficult with standard time integrators. Parallel-in-time exposes and exploits additional parallelism in the time dimension which is inherently sequential in traditional methods. The rational approximation of exponential integrators (REXI) method allows taking arbitrarily long time steps based on a sum over a number of decoupled complex PDEs that can be solved independently massively parallel. Hence REXI is assumed to be well suited for modern massively parallel super computers which are currently trending. To date the study and development of the REXI approach has been limited to linearized problems on the periodic 2D plane. This work extends the REXI time stepping method to the linear shallow-water equations (SWE) on the rotating sphere, thus moving the method one step closer to solving fully nonlinear fluid problems of geophysical interest on the sphere. The rotating sphere poses particular challenges for finding an efficient solver due to the zonal dependence of the Coriolis term. Here we present an efficient REXI solver based on spherical harmonics, showing the results of: a geostrophic balance test, a comparison with alternative time stepping methods, an analysis of dispersion relations, indicating superior properties of REXI, and finally a performance comparison on Cheyenne supercomputer. Our results indicate that REXI is not only able to take larger time steps, but that REXI can also be used to gain higher accuracy and significantly reduced time-to-solution compared to currently existing time stepping methods.
Supplementary Figure S1 from Temporal niche partitioning as a novel mechanism promoting co-existence of sympatric predators in marine systems
Creators: name: Lear, Karissa O.
name: Whitney, Nicholas M.
name: Morris, John J.
name: Gleiss, Adrian C.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Hourly mean body acceleration for each species plotted alongside the diel activity pattern described by the best-fit generalised additive mixed model.
How does a small researcher driven University Press live up to professionalism?
Creators: name: Lenz, Christina
Publisher: name: Zenodo
Year: 2019
Subjects: university press
institutional publishing
open access
academic publishing
scholarly communications
library publishing

description: This is a presentation by Christina Lenz from Stockholm University Press from the AEUP 2nd Conference in Brno, Czech Republic, 13–14 June 2019 “(Re-)Shaping University Presses and Institutional Publishing”.
Onthophagus conradsi Balthasar 1937
Creators: name: Bezděk, Aleš
name: Hájek, Jiří
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Onthophagus
Onthophagus conradsi

description: Onthophagus conradsi Balthasar, 1937
 Onthophagus conradsi Balthasar, 1937a: 193.
Two syntypes are deposited in NMPC (ex coll. V. Balthasar):
SYNTYPE (unsexed specimen):‘Afr. or./ Victoria N./ Ukerewe [hw] // TYPUS [p, red label] // Onthophagus / conradsi
n.sp. m. [hw] // Dr. V. Balthasar det. [p] // conradsi / m [hw, orange label]’. SYNTYPE (unsexed specimen): ‘Tanganjika / Ukerewe [hw] // TYPUS [p, red label]’.
 Current status. Valid species; not assigned to any subgenus.
description: Published as part of Bezděk, Aleš & Hájek, Jiří, 2013, Catalogue of type specimens of beetles (Coleoptera) deposited in the National Museum, Prague, Czech Republic, pp. 387-442 in Acta Entomologica Musei Nationalis Pragae 53 (1) on page 403, DOI: 10.5281/zenodo.5739743
On possible superconductivity in the doped ladder compound La_(1-x)Sr_xCuO_2.5
Creators: name: Normand, B.
name: Agterberg, D. F.
name: Rice, T. M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: LaCuO_2.5 is a system of coupled, two-chain, cuprate ladders which may be doped systematically by Sr substitution. Motivated by the recent synthesis of single crystals, we investigate theoretically the possibility of superconductivity in this compound. We use a model of spin fluctuation-mediated superconductivity, where the pairing potential is strongly peaked at πin the ladder direction. We solve the coupled gap equations on the bonding and antibonding ladder bands to find superconducting solutions across the range of doping, and discuss their relevance to the real material.
description: RevTex, 4 pages, 7 figures
Heights of Heegner points on Shimura curves
Creators: name: Zhang, Shouwu
Publisher: name: arXiv
Year: 2001
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: The purpose of this paper is to generalize some results of Gross-Zagier [20] and Kolvyvagin [28] to totally real fields.
description: 121 pages, published version
Prospección medioambiental en manantiales con alto contenido en mercurio en el Concejo de Gijón con apoyo de herramientas GIS.
Creators: name: Sierra, Antonio Luis Marques
Publisher: name: figshare
Year: 2019
Subjects: subject: 50206 Environmental Monitoring
subject: FOS: Earth and related environmental sciences
subject: Environmental Science
subject: 90702 Environmental Engineering Modelling
subject: FOS: Environmental engineering

description: El presente trabajo presenta los resultados del estudio previo de caracterización de contenidos en metales pesados, con especial atención al mercurio, del sistema acuífero de la Campa Torres. Debido a las características que definen este sistema, el acuífero es muy sensible a los procesos de contaminación. La zona de estudio ha sufrido un gran desarrollo urbano en algunas de las áreas, y
está previsto la creación de nuevas urbanizaciones en la zona de recarga del sistema en un futuro no muy lejano, lo que puede influir negativamente en la calidad del acuífero. Se han muestreado regularmente 7 manantiales, de forma simultánea al muestreo de aguas se han recogido muestras de suelo y se ha realizado una campaña de muestreo de mercurio en aire; con ello y mediante el uso de herramientas GIS se ha tratado de inventariar los posibles focos potenciales de contaminación.
Supplemental Materials for Cook et al., "The cranial biomechanics and feeding performance of Homo floresiensis" from The cranial biomechanics and feeding performance of Homo floresiensis
Creators: name: Cook, Rebecca W.
name: Vazzana, Antonino
name: Sorrentino, Rita
name: Benazzi, Stefano
name: Smith, Amanda L.
name: Strait, David S.
name: Ledogar, Justin A.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: Computational Biology

description: Supplemental Figures (5) & Supplemental Tables (3)
Multiparticle azimuthal angular correlations in $pA$ collisions
Creators: name: Zhang, Cheng
name: Davy, Manyika Kabuswa
name: Shi, Yu
name: Wang, Enke
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the Color Glass Condensate formalism, we evaluate the 3-dipole correlator up to the $\frac{1}{N_c^4}$ order with $N_c$ being the number of colors, and compute the azimuthal cumulant $c_{123}$ for 3-particle productions. In addition, we discuss the patterns appearing in the $n$-dipole formula in terms of $\frac{1}{N_c}$ expansions. This allows us to conjecture the $N_c$ scaling of $c_n\{m\}$, which is crosschecked by our calculation of $c_2\{4\}$ in the dilute limit.
Glass-induced enhancement of superconducting $T_c$: Pairing via dissipative mediators
Creators: name: Setty, Chandan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: With substantial evidence of glassy behavior in the phase diagram of high $T_c$ superconductors and its co-existence with superconductivity, we attempt to answer the question: what are the properties of a superconducting state where the force driving cooper pairing becomes dissipative? We find that when the bosonic mediator is local, dissipation acts to reduce the superconducting critical temperature ($T_c$). On the other hand, contrary to naïve expectations, $T_c$ behaves non-monotonically with dissipation for a non-local mediator -- weakly dissipative bosons at different energy scales act coherently to give rise to an increase in $T_c$ and eventually destroy superconductivity when the dissipation exceeds a critical value. The critical value occurs when dissipative effects become comparable to the energy scale associated with the spatial stiffness of the mediator, at which point, $T_c$ acquires a maximum. We outline consequences of our results to recent proton irradiation experiments (M. Leroux et al.,~\cite{Welp2018}) on the cuprate superconductor La$_{2-x}$Ba$_x$CuO$_4$ (LBCO) which observe a disorder induced increase in $T_c$ even when the transition temperature of the proximate charge density wave (CDW) is unaffected by the presence of irradiation. Our mechanism is a novel way to raise $T_c$ that does not require a `tug-of-war' -type scenario between two competing phases.
description: 3 figures, 6 pages
Dynamic polarizability measurements in $^{176}$Lu$^+$
Creators: name: Arnold, K. J.
name: Kaewuam, R.
name: Tan, T. R.
name: Porsev, S. G.
name: Safronova, M. S.
name: Barrett, M. D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We measure the differential polarizability of the $^{176}$Lu$^+$ $^1S_0$ -to- ${^3}D_1$ clock transition at multiple wavelengths. This experimentally characterizes the differential dynamic polarizability for frequencies up to 372 THz and allows an experimental determination of the dynamic correction to the blackbody radiation shift for the clock transition. In addition, measurements at the near resonant wavelengths of 598 and 646 nm determine the two dominant contributions to the differential dynamic polarizability below 372 THz. These additional measurements are carried out by two independent methods to verify the validity of our methodology. We also carry out a theoretical calculation of the polarizabilities using the hybrid method that combines the configuration interaction (CI) and the coupled-cluster approaches, incorporating for the first time quadratic non-linear terms and partial triple excitations in the coupled-cluster calculations. The experimental measurements of the $|\langle ^3D_1|| r || ^3P_J\rangle|$ matrix elements provide high-precision benchmarks for this theoretical approach.
description: 11 pages, 5 figures, and 13 page supplemental material
Bifurcations in the RG-flow of QCD
Creators: name: Kuipers, Folkert
name: Gursoy, Umut
name: Kuznetsov, Yuri
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Bifurcation analysis is used to study an effective model of QCD$_4$ with four-fermi interactions. Our analysis supports the scenario of a fixed point merger at the lower edge of the conformal window. This indicates square root scaling of the anomalous scaling dimensions of the fermion fields just above the lower edge and exponential scaling just below. We also predict existence of new fixed points in this model whose (dis)appearance may indicate transitions of the flow within the conformal window. Furthermore, we make new predictions for the critical value $(N_{f}/N_{c})_{\textrm{crit}}$ at the lower edge. We also obtain exotic spiraling flows that are generated by complex scaling dimensions of the effective four-fermi interactions. Finally, we extend the model by adding a scalar field that couples with a Yukawa interaction term and study the modifications it causes to RG-flows.
description: 31+26 pages; references added, typos corrected
Small polaron formation in dangling-bond wires on the Si(001) surface
Creators: name: Bowler, D. R.
name: Fisher, A. J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: From electronic structure calculations, we find that carriers injected into dangling-bond atomic wires on the Si(001) surface will self-trap to form localised polaron states. The self-trapping distortion takes the form of a local suppression of the buckling of the dimers in the wire, and is qualitatively different for the electron and hole polarons. This result points to the importance of polaronic effects in understanding electronic motion in such nanostructures.
description: LaTeX with APS RevTeX macros; 14 pages including 4 figures in EPS format
Slamming the Golden Door: Canada-U.S. Migration Policy and Refugee Resettlement
Creators: name: Falconer, Robert
Publisher: name: The School of Public Policy Publications
Year: 2019

description: In the past few weeks, the United States has either announced or considered noteworthy changes to refugee and asylum policies. On July 15, 2019, the Department of Homeland Security announced that migrants who pass through another country before arriving at or within the United States will be barred from claiming asylum there, with few exceptions. On July 18, 2019 Politico reported that the Trump Administration was preparing to slash refugee admissions for the 2020 fiscal year (Hesson 2019), a report that was partially realized in a September 26th decision by the White House to reduce the ceiling on refugee resettlement from 30,000 in 2019 to 18,000 for the coming year (White House 2019). This continues the trend of previous reductions in 2017 and 2018, the latter of which resulted in Canada surpassing the United States to resettle more refugees than any other country in the world. Both of these policy changes may have significant implications for Canada. This communiqué will focus on U.S. retreat from refugee resettlement, while a second communiqué focuses on the U.S. asylum bar.
description: The School of Public Policy Publications, Vol 12 (2019)