cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Experiencias clínicas en la rehabilitación del paciente con implante coclear
Creators: name: Arredondo, Martha Isabel
Publisher: name: Universidad del Rosario
Year: 2022

description: Hablar de la rehabilitación del paciente con implante coclear supone una serie de retos, en varios niveles, que deben ser superados, si se quiere tener una experiencia clínica satisfactoria. Este es un procedimiento que se ha venido implementando de forma reciente, como una esperanza alternativa de tratamiento para pacientes con pérdida auditiva. Esta es alternativa, dado que los enfoques de manejo e  intervención terapéutica tradicional hablan  de  una  habilitación-rehabilitación manual u  oral,  las cuales tienen mayor resonancia y aceptación dentro de la comunidad sorda, hasta el momento. La  rehabilitación audio verbal empezó a  practicarse a  mediados de  los  años  noventa, con  un importante éxito en lo que tenía que ver con mejorar las habilidades de identificación de la presencia o ausencia del  sonido, habilidad que  le  proveía al  paciente la  posibilidad de  controlar parte  de  su entorno. Sin embargo, el creciente nivel de expectativa que esta cirugía podía suscitar, hizo necesario establecer algunos parámetros de atención y de pronóstico evolutivo, para así poder trabajar con metas de intervención realistas
Practical Experiences At Göttingen University In Providing Open Access Services To Researchers, Scholars And Faculties
Creators: name: Bargheer, Margo
Publisher: name: Zenodo
Year: 2015
Subjects: library publishing
open access
university press
FOSTER
DOAB
OAPEN

description: This is a talk I gave for a virtual conference in Ljublijana on how we run our publishing services in Göttingen. The audience consisted of researchers and librarians from the region.
Positivity of relative canonical bundles and applications
Creators: name: Schumacher, Georg
Publisher: name: arXiv
Year: 2012
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32L10, 14D20, 32Q20

description: Given a family $f:\mathcal X \to S$ of canonically polarized manifolds, the unique Kähler-Einstein metrics on the fibers induce a hermitian metric on the relative canonical bundle $\mathcal K_{\mathcal X/S}$. We use a global elliptic equation to show that this metric is strictly positive on $\mathcal X$, unless the family is infinitesimally trivial. For degenerating families we show that the curvature form on the total space can be extended as a (semi-)positive closed current. By fiber integration it follows that the generalized Weil-Petersson form on the base possesses an extension as a positive current. We prove an extension theorem for hermitian line bundles, whose curvature forms have this property. This theorem can be applied to a determinant line bundle associated to the relative canonical bundle on the total space. As an application the quasi-projectivity of the moduli space $\mathcal M_{\text{can}}$ of canonically polarized varieties follows. The direct images $R^{n-p}f_*Ω^p_{\mathcal X/S}(\mathcal K_{\mathcal X/S}^{\otimes m})$, $m > 0$, carry natural hermitian metrics. We prove an explicit formula for the curvature tensor of these direct images. We apply it to the morphisms $S^p \mathcal T_S \to R^pf_*Λ^p\mathcal T_{\mathcal X/S}$ that are induced by the Kodaira-Spencer map and obtain a differential geometric proof for hyperbolicity properties of $\mathcal M_{\text{can}}$.
description: Supercedes arXiv:0808.3259v4 and arXiv:1002.4858v2. To appear in Invent. math
Le projet d'implantation des firmes multinationales dans la construction de l'offre territoriale : Proposition d'un modèle conceptuel
Creators: name: AZZAOUI KAMILIA
name: RAMDANI BOUCHRA
name: EL HAKMI SALIHA
Publisher: name: Zenodo
Year: 2023

description: Dans un contexte de concurrence territoriale féroce, le territoire a pour mission de parvenir à capter une fraction significative des projets d'implantation des firmes multinationales. Ces projets impactent de façon déterminante les trajectoires de développement du territoire. De ce fait, il lui est nécessaire de développer des outils spécifiques lui permettant de promouvoir un environnement d'affaires propices, répondant aux besoins des investisseurs et facilitant leurs insertions et développements durables dans l'économie locale. Afin de mener à bien sa mission, le territoire se doit de valoriser ses caractéristiques, et les ajuster de façon à répondre mieux que ces concurrents à la demande établie par les investisseurs. Il doit alors adapté son offre territoriale aux projets d'implantation de ces firmes. Cependant, il est légitime de constater une certaine sécheresse dans la littérature autour de la construction d'une offre territoriale. Dans cet article, nous proposons un modèle de création d'une offre territoriale adaptée aux projets d'implantation. Ce modèle a été établi sur base d'une revue  de la littérature en marketing territorial et d'une analyse des données secondaires relatives aux pratiques et expériences réussies dans l'accompagnement de l'implantation des multinationales dans le territoire.
Shallow Dark Matter Cusps in Galaxy Clusters
Creators: name: Laporte, Chervin F. P.
name: White, Simon D. M.
name: Naab, Thorsten
name: Ruszkowski, Mateusz
name: Springel, Volker
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the evolution of the stellar and dark matter components in a galaxy cluster of $10^{15} \, \rm{M_{\odot}}$ from $z=3$ to the present epoch using the high-resolution collisionless simulations of Ruszkowski & Springel (2009). At $z=3$ the dominant progenitor halos were populated with spherical model galaxies with and without accounting for adiabatic contraction. We apply a weighting scheme which allows us to change the relative amount of dark and stellar material assigned to each simulation particle in order to produce luminous properties which agree better with abundance matching arguments and observed bulge sizes at $z=3$. This permits the study of the effect of initial compactness on the evolution of the mass-size relation. We find that for more compact initial stellar distributions the size of the final Brightest Cluster Galaxy grows with mass according to $r\propto M^{2}$, whereas for more extended initial distributions, $r\propto M$. Our results show that collisionless mergers in a cosmological context can reduce the strength of inner dark matter cusps with changes in logarithmic slope of 0.3 to 0.5 at fixed radius. Shallow cusps such as those found recently in several strong lensing clusters thus do not necessarily conflict with CDM, but may rather reflect on the initial structure of the progenitor galaxies, which was shaped at high redshift by their formation process.
description: 8 pages, 4 figures, submitted to MNRAS
Ab-initio studying of spin states of sodium cobaltate Na$_{2/3}$CoO$_2$
Creators: name: Lysogorskiy, Y.
name: Nedopekin, O.
name: Krivenko, S.
name: Tayurskii, D.
name: Minisini, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Puzzling properties of sodium cobaltates Na${}_x$CoO${}_2$ become an issue of numerous recent theoretical and experimental investigations because of very high thermopower and intricate phase diagram of this material. Experiments indicated Na${}_{2/3}$CoO${}_2$ to have a kagome-like cobalt sublattice, which implies additional complexity of this strongly correlated system. In the present work we have employed the ab-initio GGA+U modeling method to investigate spin states of Na${}_{2/3}$CoO${}_2$, using an exact crystal cell established in the experiment. Stability of sodium imprint for concentration $x=2/3$ proposed in the publications has been obtained. An AFM-A type magnetic ordering has been recognized as a ground state. Moreover, a competition between low spin state (LS) and intermediate spin state (IS) has been established to depend on on-site Hubbard $U$ correction parameter. LS state has been identified as a ground state of Na${}_{2/3}$CoO${}_2$.
description: 16 pages, 7 figures
Editorial: de la música y la historia
Creators: name: Campillo-Pardo, Alberto-Jose
Publisher: name: Universidad del Rosario
Year: 2015

description: La música ha acompañado al hombre desde los albores de su historia y su desarrollo se ha dado a la par de esta. Desde siempre, el arte musical ha servido a los pueblos como una manera de reflejar su mundo, contar sus leyendas, adorar a sus dioses o acompañar sus celebraciones, en expresiones de alborozo, melancolía e incluso miedo. En este sentido, la historia de los pueblos se puede entender a través de la música, pues esta nos habla del espíritu, no sólo de los compositores, sino de la civilización a la cual pertenece. Incluso las tonadas de pueblos que llamamos “bárbaros” o “primitivos”, cuentan con un espíritu que guía sus notas y cuenta la historia de sus compositores. Un claro ejemplo de esto es la música mongola tradicional, la cual está inspirada en su entorno y evoca la dureza estepa, con sonidos guturales de gargantas erosionadas por el viento, acompañada por el morin juur, instrumento de dos cuerdas capaz de producir melodías hermosas que sobrecogen el corazón.
Magnetorotational Instability Driven Accretion in Protoplanetary Disks
Creators: name: Bai, Xue-Ning
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The gas dynamics in protoplanetary disks (PPDs) is strongly affected by non-ideal MHD effects. Using a complex chemical reaction network with standard prescriptions for X-ray and cosmic-ray ionizations, as well as the most up-to-date results from numerical simulations, we study the non-ideal MHD effects on the magnetorotational instability (MRI) and angular momentum transport in PPDs. We first show that no matter grains are included or not, the recombination time is always shorter than the orbital time in the bulk of PPDs, justifying the validity of local ionization equilibrium. The full conductivity tensor at different disk radii and heights is evaluated, with the MRI active region determined by requiring that (1) the Ohmic Elsasser number be greater than 1; (2) the ratio of gas to magnetic pressure beta be greater than beta_min(Am) as identified by Bai & Stone (2011), where Am is the Elsasser number for ambipolar diffusion. With full flexibility as to the magnetic field strength, we provide a general framework for estimating the MRI-driven accretion rate M_dot and the magnetic field strength in the MRI-active layer. We find that the MRI-active layer always exists at any disk radii as long as the magnetic field in PPDs is sufficiently weak. However, the optimistically predicted M_dot in the inner disk (r=1-10 AU) appears insufficient to account for the observed range of accretion rate in PPDs (around 1e-8M_Sun/yr) even in the grain-free calculation, and the presence of solar abundance sub-micron grains further reduces M_dot by one to two orders of magnitude. Our results suggest that stronger sources of ionization, and/or additional mechanisms such as magnetized wind are needed to explain the observed accretion rates in PPDs. In contrast, our predicted M_dot is on the order of 1e-9M_Sun/yr in the outer disk, consistent with the observed accretion rates in transitional disks. (Abridged)
description: 22 pages, 6 figures, accepted for publication in ApJ
El conflicto detrás del conflicto
Creators: name: Caicedo Hinojos, Gustavo
Publisher: name: Universidad del Rosario
Year: 2015

description: Más que un proceso de paz con la guerrilla, lo que se pacte en La Habana es para los colombianos una oportunidad única de confrontarnos con nosotros mismos, con nuestros errores como ciudadanos y como sociedad, y con nuestra característica incapacidad a la hora de perdonarnos. Es entonces una puerta que se abre para reconciliarnos, no solo con los insurgentes, sino también – y más importante aún – con nuestra llamativa forma de construir un país bajo los principios de <> y <>, y volver nuestra reflexión sobre un Estado que se levantó sin consensos ni pactos sociales sólidos, y que por ende nació sin vida. Hoy, cuando se habla en cada rincón del país sobre la paz y el post-conflicto, es urgente entender las dinámicas y las características actuales de la violencia en Colombia, sus manifestaciones más  evidentes y  ocultas, así  como sus orígenes. Nadie pone en duda la imperiosa necesidad de solucionar un conflicto armado mayoritariamente rural que ha producido fenómenos lamentables como la siembra de minas antipersonales, el reclutamiento forzado de niños, el desplazamiento, los cultivos ilícitos y la normalización de prácticas temibles como masacres y  secuestros. Pero entender el  proceso de  paz  con  las  FARC  como la eliminación de  la  violencia en  nuestro país  es  no entenderlo en  absoluto, dado  que  en  él  lo  que  se  está poniendo en  juego es  nuestra capacidad individual y colectiva de solucionar nuestras diferencias a través de mecanismos que no impliquen la violencia ni la eliminación física del otro. Esto significa que el proceso de paz es un proceso para empezar a conseguir la paz y abrirle espacio a nuevas formas de zanjar nuestros diferendos, y no para decretar su cumplimiento de tajo.
Selection effects in the black hole-bulge relation and its evolution
Creators: name: Schulze, Andreas
name: Wisotzki, Lutz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an investigation of sample selection effects that influence the observed black hole - bulge relations and its evolution with redshift. We provide a common framework in which all kinds of selection effects on the BH-bulge relations can be investigated, but our main emphasis is on the consequences of using broad-line AGN and their host galaxies to search for evolution in the BH-bulge relation. We identified relevant sources of bias that were not discussed in the literature so far. A particularly important effect is caused by the fact that the active fraction among SMBHs varies considerably with BH mass, in the sense that high-mass BHs are less likely to be active than lower mass ones. In the connection with intrinsic scatter of the BH-bulge relation this effect implies a bias towards a low BH mass at given bulge property. This effect adds to the bias caused by working with luminosity or flux limited samples that were already discussed by others. A quantitative prediction of these biases requires (i) a realistic model of the sample selection function, and (ii) knowledge of relevant underlying distribution functions. For low-redshift AGN samples we can naturally reproduce the flattening of the relation observed in some studies. When extending our analysis to higher redshift samples we are clearly hampered by limited empirical constraints on the various relevant distribution functions. Using a best-guess approach for these distributions we estimate the expected magnitude of sample selection biases for a number of recent observational attempts to study the BH-bulge evolution. In no case do we find statistically significant evidence for an evolving BH-bulge relation. We suggest a possible practical approach to circumvent several of the most problematic issues connected with AGN selection; this could become a powerful diagnostic in future investigations (abridged).
description: 20 pages, 20 figures, accepted for publication in A&A
Homing in hematopoietic stem cells: focus on regulatory role of CXCR7 on SDF1a/CXCR4 axis
Creators: name: Asri, Amir
name: Sabour, Javid
name: Atashi, Amir
name: Soleimani, Masoud
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2016
Subjects: CXCR7
CXCR4
CXCL12
HSCs homing

description: Hematopoietic stem cells (HSCs) form a rare population of multipotent stem cells, which give rise to all hematopoietic lineages. HSCs home to bone marrow niches and circulate between blood and bone marrow. Many factors, especially SDF1a, affect the circulation of HSCs, but these have not been fully recognized. SDF1a has been shown to bind CXCR7 in addition to CXCR4 and can also function as SDF1a/CXCR4 modulator. CXCR7 plays a role in HSCs homing via SDF1a gradient and is a mediator of CXCR4/SDF1a axis. This review describes the current concepts and questions concerning CXCR7/CXCR4/SDF1a axis as an important key in hematopoietic stem cells homing with particular emphasis on CXCR7 receptor. Homing of HSCs is an essential step for successful hematopoietic stem cell transplantation.
description: EXCLI Journal; 15:Doc134; ISSN 1611-2156
Presence of anti-TIF-1γ, anti-Ro52, anti-SSA/Ro60 and anti-Su/Ago2 antibodies in breast cancer: a cross-sectional study
Creators: name: Mercado, Mónica Vázquez-Del
name: Martínez-García, Erika Aurora
name: Daneri-Navarro, Adrián
name: Gómez-Bañuelos, Eduardo
name: Martín-Márquez, Beatriz Teresita
name: Pizano-Martínez, Oscar
name: Wilson-Manríquez, Eduardo A.
name: Corona-Sánchez, Esther Guadalupe
name: Chavarria-Avila, Efrain
name: Sandoval-García, Flavio
name: Satoh, Minoru
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Cell Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Cardiology

description: The presence of myositis-specific antibodies (MSA), was recently reported in healthy individuals, cancer patients without myopathy and paraneoplastic rheumatic syndromes. We sought to analyze the frequency of MSA, myositis-associated antibodies (MAA) and autoantibodies related to systemic autoimmune rheumatic diseases (SARD) in breast cancer patients. One hundred fifty-two breast cancer patients were enrolled in a cross-sectional study. Clinical information was collected, and autoantibodies tested by immunoprecipitation of an 35S-methionine-labeled K562 cell extract, enzyme-linked immunosorbent assay (ELISA) and Western blot when indicated. All statistical tests were performed using the software statistical package for the social science (SPSS) ver. 19.0 (IBM Inc., NYSE, USA). Autoantibodies associated with SARD: anti-52 kD ribonucleoprotein/tripartite motif-containing 21 (anti-Ro52/TRIM21) was found in 5.9% (9/152), anti-Sjögren syndrome-related antigen A/60 kD ribonucleoprotein antibody (anti-SSA/Ro60) in 3.9% (6/152) and anti-Su antigen/Argonaute 2 antibody (anti-Su/Ago2) in 2.6% (4/152). Meanwhile, anti-transcription intermediary factor-1γ (anti-TIF-1γ, p155/140) antibody was positive in 2 cases and anti-polymyositis/scleroderma antibody was detected in one case. As a whole, 14.47% (22/152) of breast cancer patients showed autoantibodies associated with SARD. These specific autoantibodies were not associated with the presence of rheumatic diseases except one rheumatoid arthritis patient positive for anti-Ro52/TRIM21. Autoantibodies to TIF-1γ were found in two patients with breast cancer without dermatomyositis (DM). More common specificities were autoantibodies anti-SSA/Ro60, anti-Ro52/TRIM21 and anti-Su/Ago2. More studies are needed in order to establish the biological meaning of the presence of SARD-associated autoantibodies in breast cancer.
Comunicato Stampa Della Iarc N°238: "L’ Esposizione A Basse Dosi Di Radiazioni Ionizzanti Aumenta Il Rischio Di Morte A Causa Di Tumori Solidi". Pubblicato Il 21 Ottobre 2015
Creators: name: Fellone, Lucio
Publisher: name: Zenodo
Year: 2016
Subjects: Radiazioni ionizzanti, cancro, IARC, cancer, radiation, Italiano, Press Releases

description: Versione autorizzata in italiano del Comunicato Stampa della IARC N°238 pubblicato il 21 ottobre 2015: "L’ ESPOSIZIONE A BASSE DOSI DI RADIAZIONI IONIZZANTI AUMENTA IL RISCHIO DI MORTE A CAUSA DI TUMORI SOLIDI". Documento originale all'indirizzo: http://www.iarc.fr/en/media-centre/pr/2015/pdfs/pr238_E.pdf Authorized Italian version of the IARC Press Release N°238 published on 21 October 2015: Low doses of ionizing radiation increase risk of death from solid cancers. Original document at: http://www.iarc.fr/en/media-centre/pr/2015/pdfs/pr238_E.pdf
description: Also published at: https://updatingmdl.wordpress.com/documents/
El boom de los conciertos musicales en Colombia: razones y limitantes
Creators: name: Jaramillo, Juan Guillermo
Publisher: name: Universidad del Rosario
Year: 2022

description: Con la confirmación de las presentaciones musicales de Katy Perry y Pearl Jam, sigue creciendo la lista de reconocidos artistas internaciones que han visitado a Colombia en el presente año. Teniendo en cuenta que durante el primer semestre se tuvo los conciertos de Foo Fighters, Interpol, Kings of Leon, entre otros, la cartelera de conciertos del 2015 parece no desentonar con el boom de espectáculos musicales internacionales que desde el 2009 se viene presentando en Colombia. A partir de ese año, se ha visto la gran afluencia al país de músicos y bandas de la talla de Paul McCartney, Madonna, Sting, Coldplay, Aerosmith, Metallica, Iron Maiden, Kiss y Red Hot Chili Peppers. Sin embargo, los fanáticos colombianos habían estado esperando la llegada de algunos de estos iconos musicales desde muchos años atrás. Por lo tanto, surge la pregunta: ¿Cuáles son las razones del boom de conciertos musicales en Colombia?
The Buffer Gas Beam: An Intense, Cold, and Slow Source for Atoms and Molecules
Creators: name: Hutzler, Nicholas R.
name: Lu, Hsin-I
name: Doyle, John M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Beams of atoms and molecules are stalwart tools for spectroscopy and studies of collisional processes. The supersonic expansion technique can create cold beams of many species of atoms and molecules. However, the resulting beam is typically moving at a speed of 300-600 m/s in the lab frame, and for a large class of species has insufficient flux (i.e. brightness) for important applications. In contrast, buffer gas beams can be a superior method in many cases, producing cold and relatively slow molecules in the lab frame with high brightness and great versatility. There are basic differences between supersonic and buffer gas cooled beams regarding particular technological advantages and constraints. At present, it is clear that not all of the possible variations on the buffer gas method have been studied. In this review, we will present a survey of the current state of the art in buffer gas beams, and explore some of the possible future directions that these new methods might take.
A Brief Comparison of the Anti-corruption Laws of Certain Jurisdictions and The Insights for The Developing Ones
Creators: name: Mashrur Rahman, Mahin
Publisher: name: Journal of Legal Research and Juridical Sciences with ISSN (O): 2583-0066.
Year: 2023
Subjects: Anti-corruption Law
Bangladeshi Anti-corruption Law
International Anti-corruption Law
Developing Country Anti-corruption LAw
Comparative Anti-coruption Law

description: Corruption has many forms. In the age of rapid expansion and growth, companies need to deal with the diverse legal provisions of different countries as well as international legal provisions in order to successfully establish a new business or to adapt to the new trends of any jurisdiction. The lack of coherent research has caused a legal vacuum in this regard. As a result, companies are struggling to conduct business in various jurisdictions around the world and are facing a challenge to know the veracious legal provisions of so many jurisdictions. The USA, UK, France, Brazil, and South Korea are some of the big economic powers where companies are keen to expand their business but in doing so, they face complicated legal challenges dealing with corruption. Also, there are countries like Bangladesh with a totally exceptional socioeconomic environment and unique legal structure where the corporations conduct their business. There are also challenges regarding extraterritorial jurisdiction in the case of bribery where some of these countries are capable of adjudicating a company or related third party even if the corruption has occurred outside its territory. There is a difference in case of nature of adjudication as both civil and criminal cases can be administered in case of corruption in a different jurisdiction. Anti-corruption compliance and effective implementation of such could not only be able to defend the company from various adverse legal effects but also it could minimize the cases of corruption within the company profiting it in the long term. Also, before expanding business to a new country or consolidating its existing position, the companies need to take certain measures such as a code of conduct, ensuring a transparent environment, and hiring the right employees and third parties are all recommended for corruption-free growth of a company. By fulfilling all the conditions, a company can effectively expand its business and grow its profits.
Perséfone
Creators: name: Quintero, Juan Pablo
Publisher: name: Universidad del Rosario
Year: 2015

description: Perséfone, o Proserpina en la tradición latina, es conocida por ser la diosa de la muerte; sin embargo sus facultades son poco convencionales para ser la reina del inframundo. La historia, ya tardía en la Grecia clásica, cuenta que Perséfone, hija de Zeus y Deméter, se encontraba un día recogiendo narcisos en la región siciliana de Enna, cuando fue sorprendida por un enamorado Hades, quien la raptó con la aquiescencia de Zeus. Al enterarse Deméter, diosa de la agricultura, entró en cólera y maldijo la tierra a una racha prolongada de sequía. Frente a la crisis, Zeus le pidió a Hermes que intercediera para traer de vuelta a su hija. Sin embargo ésta, durante su estancia en el inframundo, ya había saciado su apetito con una granada ofrecida por Hades, lo que la comprometía a ser su reina. A pesar de esto, Hermes logró llegar a un acuerdo. Durante dos tercios del año Perséfone podría salir al mundo terrenal, al cabo de los cuales debería volver a ocupar el trono de ébano. Y así durante cada año.
La crisis económica de la fuerza social de la crisis política. Una interpretación de la independencia de Cartagena
Creators: name: Díaz, Carlos A.
Publisher: name: Universidad del Rosario
Year: 2015

description: En Fluctuaciones e historia económica La brousse constataba para el caso francés de 1789 que “la crisis política da a la crisis social un  objetivo  político, y  la  crisis económica da  a  la  crisis política una  enorme  fuerza social”.  En  contadas palabras, la crisis política es la oportunidad que sutura y politiza problemas sociales. Para el caso neogranadino es dable observar que los eventos posteriores a 1808 son la consecuencia lógica de la politización radical de la crisis económica originada en el desgaste del Estado fiscal-militar español. Las continuas derrotas de la armada española, los bloqueos navales infligidos por Inglaterra y Francia, la consecuente alteración del giro comercial y el aumento de la presión fiscal se sumaron para crear una presión agregada que encontró en la ausencia de la majestad regia la oportunidad perfecta para la transformación política.
Hadronic Light-by-Light and the Pion Polarizability
Creators: name: Engel, Kevin T.
name: Patel, Hiren H.
name: Ramsey-Musolf, Michael J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the charged pion loop contribution to the light-by-light scattering amplitude for off-shell photons in chiral perturbation theory through next-to-leading order (NLO). We show that NLO contributions are relatively more important due to a fortuitous numerical suppression of the leading-order (LO) terms. Consequently, one expects theoretical predictions for the hadronic light-by-light (HLBL) contribution to the muon anomalous magnetic moment, $a_μ^{HLBL}$, to be sensitive to the choice of model for the higher momentum-dependence of the LBL amplitude. We show that models employed thus far for the charged pion loop contribution to $a_μ^{HLBL}$ are not consistent with low-momentum behavior implied by quantum chromodynamics, having omitted potentially significant contributions from the pion polarizability.
description: 4 pages, 1 figure
Verändertes Publizieren In Den Forstwissenschaften: Open Access – Bestandsaufnahme Und Empfehlungen
Creators: name: Bargheer, Margo
name: Wagner, Roland
Publisher: name: Zenodo
Year: 2014
Subjects: forestry journals
open access
publishing system

description: This is a talk we held at the Forestry Conference "Fowita" 2014 in Tharandt, Germany. The rationale of the talk was to give an overview on existing Open Access options in the field of forestry and give recommendations to forestry reserchers on how to publish Open Access.
La fraternidad como ideal republicano
Creators: name: Torres
name: Torres Naizaque, Juan Camilo
Publisher: name: Universidad del Rosario
Year: 2015

description: No es precisa la fecha en la que la masonería aparece en el mundo occidental; diferentes registros dan cuenta de su presencia en diferentes momentos históricos, pero nada concreto se sabe acerca su génesis Sin embargo, en aras de dar con un vestigio de la masonería tal y como es concebida hoy en día, es posible trazar una línea divisoria entre una masonería conocida como operativa, que responde a la pregunta por los orígenes gremiales remotos de la fraternidad, y la ahora denominada especulativa, caracterizada por definir de una manera más o menos clara las formas rituales y objetivos que perduran hasta nuestros días. Las raíces más próximas de la masonería especulativa se encuentran en la Inglaterra de comienzos del siglo XVIII, y más específicamente de 1717. En dicho momento, se organizaron por vez primera, bajo una misma estructura formal y filosófica, las logias masónicas presentes en Inglaterra (Carnicelli, 1970), dando así a luz a la Gran Logia de Londres, actual cúspide de la organización mundial de la masonería. Aun así, esta logia es considerada pilar de la organización no sólo por ser producto de dicha convergencia de logias menores, sino porque también fue cuna de las Constituciones de Anderson 1723, documento con el que, de igual forma, se buscó dar cuenta documentada de los simbolismos, rituales y fines propios de la histórica fraternidad por  ́primera vez (Ferrer Benimeli, 1989).
Analysis of two SMC HII Regions Considering Thermal Inhomogeneities: Implications for the Determinations of Extragalactic Chemical Abundances
Creators: name: Peña-Guerrero, Maria A.
name: Peimbert, Antonio
name: Peimbert, Manuel
name: Ruiz, Maria T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present long slit spectrophotometry considering the presence of thermal inhomogeneities (t^2) of two HII regions in the Small Magellanic Cloud (SMC): NGC 456 and NGC 460. Physical conditions and chemical abundances were determined for three positions in NGC 456 and one position in NGC 460, first under the assumption of uniform temperature and then allowing for the possibility of thermal inhomogeneities. We determined t^2 values based on three different methods: i) by comparing the temperature derived using oxygen forbidden lines with the temperature derived using helium recombination lines, ii) by comparing the abundances derived from oxygen forbidden lines with those derived from oxygen recombination lines, and iii) by comparing the abundances derived from ultraviolet carbon forbidden lines with those derived from optical carbon recombination lines. The first two methods averaged t^2=0.067+-0.013 for NGC 456 and t^2=0.036+-0.027 for NGC 460. These values of t^2 imply that when gaseous abundances are determined with collisionally excited lines they are underestimated by a factor of nearly 2. From these objects and others in the literature, we find that in order to account for thermal inhomogeneities and dust depletion, the O/H ratio in low metallicity HII regions should be corrected by 0.25-0.45 dex depending on the thermal structure of the nebula, or by 0.35 dex if such information is not available.
description: Accepted for publication in The Astrophysical Journal. 41 pages in pre-print format. 3 figures
A Novel Approach for Password Authentication Using Bidirectional Associative Memory
Creators: name: Chakravarthy, A. S. N.
name: Raja, Penmetsa V. Krishna
name: Avadhani, Prof. P. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Password authentication is a very important system security procedure to gain access to user resources. In the Traditional password authentication methods a server has check the authenticity of the users. In our proposed method users can freely select their passwords from a predefined character set. They can also use a graphical image as password. The password may be a character or an image it will be converted into binary form and the binary values will be normalized. Associative memories have been used recently for password authentication in order to overcome drawbacks of the traditional password authentication methods. In this paper we proposed a method using Bidirectional Associative Memory algorithm for both alphanumeric (Text) and graphical password. By doing so the amount of security what we provide for the user can be enhanced. This paper along with test results show that converting user password in to Probabilistic values and giving them as input for BAM improves the security of the system
description: 13 pages
Probing the X-Ray Binary Populations of the Ring Galaxy NGC 1291
Creators: name: Luo, B.
name: Fabbiano, G.
name: Fragos, T.
name: Kim, D. -W.
name: Belczynski, K.
name: Brassington, N. J.
name: Pellegrini, S.
name: Tzanavaris, P.
name: Wang, Junfeng
name: Zezas, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present Chandra studies of the X-ray binary (XRB) populations in the bulge and ring regions of the ring galaxy NGC 1291. We detect 169 X-ray point sources in the galaxy, 75 in the bulge and 71 in the ring, utilizing the four available Chandra observations totaling an effective exposure of 179 ks. We report photometric properties of these sources in a point-source catalog. There are ~40% of the bulge sources and ~25% of the ring sources showing >3σlong-term variability in their X-ray count rate. The X-ray colors suggest that a significant fraction of the bulge (~75%) and ring (~65%) sources are likely low-mass X-ray binaries (LMXBs). The spectra of the nuclear source indicate that it is a low-luminosity AGN with moderate obscuration; spectral variability is observed between individual observations. We construct 0.3-8.0 keV X-ray luminosity functions (XLFs) for the bulge and ring XRB populations, taking into account the detection incompleteness and background AGN contamination. We reach 90% completeness limits of ~1.5\times10^{37} and ~2.2\times10^{37} erg/s for the bulge and ring populations, respectively. Both XLFs can be fit with a broken power-law model, and the shapes are consistent with those expected for populations dominated by LMXBs. We perform detailed population synthesis modeling of the XRB populations in NGC 1291, which suggests that the observed combined XLF is dominated by an old LMXB population. We compare the bulge and ring XRB populations, and argue that the ring XRBs are associated with a younger stellar population than the bulge sources, based on the relative overdensity of X-ray sources in the ring, the generally harder X-ray color of the ring sources, the overabundance of luminous sources in the combined XLF, and the flatter shape of the ring XLF.
description: 15 pages, 11 figures. Accepted for publication in ApJ
Tanaidacea Dana 1849
Creators: name: Larsen, Kim
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea

description: Order Tanaidacea Dana, 1849
description: Published as part of Larsen, Kim, 2013, The ANDEEP Tanaidacea (Crustacea: Peracarida) revisited II: the family Anarthruridae and family incertae sedis, with descriptions of three new species and the erection of a new genus, pp. 367-380 in Zootaxa 3694 (4) on page 368, DOI: 10.11646/zootaxa.3694.4.5, http://zenodo.org/record/219421
A semirelativistic treatment of spinless particles subject to the Yukawa potential with arbitrary angular momenta
Creators: name: Hamzavi, Majid
name: Ikhdair, Sameer M.
name: Solaimani, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We obtain analytical solutions of the two-body spinless Salpeter (SS) equation with Yukawa potential within the conventional approximation scheme to the centrifugal term for any -state. The semi-relativistic bound state energy spectra and the corresponding normalized wave functions are calculated by means of the Nikiforov-Uvarov (NU) method. We also obtain the numerical energy spectrum of the SS equation without any approximation to centrifugal term for the same potential and compare them with the approximated numerical ones obtained from the analytical expressions. It is found that the exact numerical results are in good agreement with the approximated ones for the lower energy states. Special cases are treated like the nonrelativistic limit and the solution for the Coulomb problem.
description: 15 pages, 2 Figures
The Role of Tiny Grains on the Accretion Process in Protoplanetary Disks
Creators: name: Bai, Xue-Ning
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Tiny grains such as PAHs have been thought to dramatically reduce the coupling between gas and magnetic fields in weakly ionized gas such as in protoplanetary disks (PPDs) because they provide tremendous surface area to recombine free electrons. The presence of tiny grains in PPDs thus raises the question of whether the magnetorotational instability (MRI) is able to drive rapid accretion to be consistent with observations. Charged tiny grains have similar conduction properties as ions, whose presence leads to qualitatively new behaviors in the conductivity tensor, characterized by n_bar/n_e>1, where n_e and n_bar denote the number densities of free electrons and all other charged species respectively. In particular, Ohmic conductivity becomes dominated by charged grains rather than electrons when n_bar/n_e exceeds about 10^3, and Hall and ambipolar diffusion (AD) coefficients are reduced by a factor of (n_bar/n_e)^2 in the AD dominated regime relative to that in the Ohmic regime. Applying the methodology of Bai (2011), we find that in PPDs, when PAHs are sufficiently abundant (>1e-9 per H_2), there exists a transition radius r_trans of about 10-20 AU, beyond which the MRI active layer extends to the disk midplane. At rr_trans, we find that remarkably, the predicted M_dot exceeds the grain-free case due to a net reduction of AD by charged tiny grains, and reaches a few times 1e-8M_Sun/yr. This is sufficient to account for the observed M_dot in transitional disks. Larger grains (>0.1 micron) are too massive to reach such high abundance as tiny grains and to facilitate the accretion process.
description: 10 pages, 6 figures, accepted for publication in ApJ
An Approximate Solution of the Jaynes-Cummings Model with Dissipation II : Another Approach
Creators: name: Fujii, Kazuyuki
name: Suzuki, Tatsuo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the preceding paper (arXiv:1103.0329 [math-ph]) we treated the Jaynes-Cummings model with dissipation and gave an approximate solution to the master equation for the density operator under the general setting by making use of the Zassenhaus expansion. However, to obtain a compact form of the approximate solution (which is in general complicated infinite series) is very hard when an initial condition is given. To overcome this difficulty we develop another approach and obtain a compact approximate solution when some initial condition is given.
description: Latex ; 15 pages ; no figure
From x-ray telescopes to neutron scattering: using axisymmetric mirrors to focus a neutron beam
Creators: name: Khaykovich, B.
name: Gubarev, M. V.
name: Bagdasarova, Y.
name: Ramsey, B. D.
name: Moncton, D. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We demonstrate neutron beam focusing by axisymmetric mirror systems based on a pair of mirrors consisting of a confocal ellipsoid and hyperboloid. Such a system, known as a Wolter mirror configuration, is commonly used in x-ray telescopes. The axisymmetric Wolter geometry allows nesting of several mirror pairs to increase collection efficiency. We have implemented a system containing four nested Ni mirror pairs, which was tested by focusing a polychromatic neutron beam at the MIT Reactor. In addition, we have carried out extensive ray-tracing simulations of the mirrors and their performance in different situations. The major advantages of the Wolter mirrors are nesting for large angular collection, and aberration-free performance. We discuss how these advantages can be utilized to benefit various neutron scattering methods, such as imaging, SANS, and time-of-flight spectroscopy.
Anarquismo: ¿utopía, necesidad o error?
Creators: name: Mejía Quintana, Juliana
Publisher: name: Universidad del Rosario
Year: 2015

description: Si aceptamos que el ser humano es capaz de actuar racionalmente y de no instrumentalizar al otro ni violentar sus  derechos y  libertades, ¿para qué  necesitamos los  Estados? ¿Cuál es su  labor fundamental? El anarquismo filosófico puede entenderse como una petición moral de autonomía y capacidad de manejo de la libertad individual y colectiva. Pero hoy por hoy parece que no es posible un mundo sin Estados, tal vez porque parece utópica la idea de un mundo donde todos actúen bien por simple autonomía. La defensa fuerte del anarquismo político radica en afirmar que no hay justificación moral por la que debamos obedecer el poder político ya que mientras la autonomía es moral, la autoridad no viene de una ley moral sino de la persona que dictamina la orden.
Revisiting Axial-Vector Meson Mixing
Creators: name: Cheng, Hai-Yang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Various phenomenological studies indicate that the mixing angle $θ_{K_1}$ of $K_{1A}$ and $K_{1B}$, the strange partners of the axial-vector mesons $a_1(1260)$ and $b_1(1235)$, respectively, lies in the vicinity of $35^\circ$ or $55^\circ$, but whether this angle is larger or smaller than $45^\circ$ still remains controversial. When the $f_1(1285)$-$f_1(1420)$ mixing angle $θ_{^3P_1}$ and the $h_1(1170)$-$h_1(1380)$ mixing angle $θ_{^1P_1}$ are determined from the mass relations, they depend on the masses of $K_{1A}$ and $K_{1B}$, which in turn depend on the mixing angle $θ_{K_1}$. We show that the approximate decoupling of the light $q\bar q$ state from the heavier $s \bar s$ state, which is empirically valid for vector, tensor and $3^{--}$ mesons, when applied to isoscalar axial-vector mesons, will enable us to discriminate different solutions of $θ_{^3P_1}$ and $θ_{^1P_1}$ and pick up $θ_{K_1}\sim 35^\circ$. Indeed, for $θ_{K_1}\sim 55^\circ$, the predicted $θ_{^1P_1}$ disagrees sharply with the recent lattice calculation and the implied large $s\bar s$ content of $h_1(1170)$ and $q\bar q$ component of $h_1(1380)$ cannot explain the observation of their strong decays. We conclude that $θ_{K_1}$ is smaller than $45^\circ$.
description: 9 pages
GGM y la música
Creators: name: Saboyá Rodríguez, Elkin Getulio
Publisher: name: Universidad del Rosario
Year: 2015

description: Cuando apareció “Bueno, hablemos de  música”, (1-12-82), GGM llevaba más  de  treinta años haciéndolo. Allí dejó dicho, entre otras cosas, que “lo único mejor que la música es hablar de música”. Siguiendo, pues, su propia recomendación, diremos algo sobre el nobel y la música. Pocos años después de dicha nota, GGM dio una entrevista (diciembre, 1985) a la revista isleña Opina. Principia diciendo que le interesa toda la música, incluso la comercial, criticando de paso el desdén de ciertos intelectuales a lo popular. El entrevistador le pone de presente que algunos llaman dicha música “opio del espíritu”. GGM no ve problema en que la cultura se venda, incluso compara con su propio caso cuando, sorprendido, descubrió que Cien años de soledad se vendía, sin que ese fuera su principal fin. El  periodista  vuelve a  la  carga, sugiriendo  que  quienes venden están “prostituyendo  el  arte”. La respuesta lo debió de dejar frío: “Entonces no lo vendan: regálenlo, pero divúlguenlo”. Lo que sea, con tal que le den una función social y cultural. Bromeando, apunta que Cuba produce tan buena música como tabaco o azúcar.
Adaptive gravitational softening in GADGET
Creators: name: Iannuzzi, Francesca
name: Dolag, Klaus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Cosmological simulations of structure formation follow the collisionless evolution of dark matter starting from a nearly homogeneous field at early times down to the highly clustered configuration at redshift zero. The density field is sampled by a number of particles in number infinitely smaller than those believed to be its actual components and this limits the mass and spatial scales over which we can trust the results of a simulation. Softening of the gravitational force is introduced in collisionless simulations to limit the importance of close encounters between these particles. The scale of softening is generally fixed and chosen as a compromise between the need for high spatial resolution and the need to limit the particle noise. In the scenario of cosmological simulations, where the density field evolves to a highly inhomogeneous state, this compromise results in an appropriate choice only for a certain class of objects, the others being subject to either a biased or a noisy dynamical description. We have implemented adaptive gravitational softening lengths in the cosmological simulation code GADGET; the formalism allows the softening scale to vary in space and time according to the density of the environment, at the price of modifying the equation of motion for the particles in order to be consistent with the new dependencies introduced in the system's Lagrangian. We have applied the technique to a number of test cases and to a set of cosmological simulations of structure formation. We conclude that the use of adaptive softening enhances the clustering of particles at small scales, a result visible in the amplitude of the correlation function and in the inner profile of massive objects, thereby anticipating the results expected from much higher resolution simulations.
description: 15 pages, 21 figures, 1 table. Accepted for publication in MNRAS