cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Informe de investigación UNPRG 2022
Creators: name: Iglesias-Osores, Sebastian
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 390199
subject: Curriculum and pedagogy not elsewhere classified

description: 📘 Resumen BreveLa universidad define y organiza sus líneas de investigación para alinearlas con las necesidades locales, regionales y nacionales, y con las políticas públicas. Estas líneas guían los proyectos, optimizan recursos y fortalecen la formación investigativa en pregrado y posgrado.🔍 Puntos clave:Se identifican 6 áreas de investigación: salud, ambiente, tecnología, agricultura, ciencias sociales y educación.Se vinculan con 44 programas académicos y los perfiles de egreso de los estudiantes.Participan docentes RENACYT en redes de investigación.Hay 2 laboratorios principales equipados para investigación científica.Se priorizan líneas de investigación con mayor impacto social y pertinencia.
A simulation analysis of alternative stabilization schemes for the British Columbia hog industry
Creators: name: Palacios, Alejandro
Publisher: name: University of British Columbia
Year: 2010

description: Given the British Columbia Government goal of income stability for hog producers, the major objective of this study was to estimate the budgetary cost to the provincial government and effectiveness of the Farm Income Assurance Program (FIAP) and alternative schemes in achieving this goal. To accomplish this objective, it was necessary to build a mathematical model incorporating the main features of the British Columbia hog industry and capable of simulating the operation and consequences of a variety of stabilization schemes. Modelling of the British Columbia hog industry posed a number of difficulties. Overcoming these difficulties required a combination of economic theory and empirical knowledge. The basic assumption underlying the hog model was that British Columbia hog production represents a minor component of the Canadian and North American market. This assumption implies that British Columbia hog producers face a perfectly elastic demand function. Thus, hog prices could be treated as exogenous, implying that any increase in production, due to a shift in the supply function to the right, would be absorbed by the market with no effect on hog prices. Later a set of production assumptions and different alternative schemes designed to stabilize producer income were incorporated into the model. Given that the objective of this study was not to determine an optimal stabilization program, because of the lack of knowledge of the objective function of policy makers, but rather to evaluate costs and effects of alternative stabilization schemes, simulation was chosen as the research method. When the mathematical model was completed it was translated into the computer model and the first step was to validate it. Historical validation was possible because the FIAP has been in operation since January 1974. Although the model was built to be as flexible and general as possible, and was able to handle several different alternative stabilization schemes, this study reports results for only three of them: (1) Farm Income Assurance Program; (2) Modified Farm Income Assurance Program; and (3) Premium-Subsidy Scheme. The analysis of the results began with a single run for each scheme, in order to determine its effects. Later, a detailed comparative analysis that involved changing one parameter value at a time was undertaken to assess the contribution of each parameter to the policy objective of income stability. Finally, a series of simulation runs was performed and performance functions were estimated to allow more general conclusions to be drawn. To achieve income stability a premium/subsidy scheme was shown to be preferable to FIAP, because it collects farmer premiums in a stabilizing way. To the extent that reduced government cost is a goal, FIAP can be modified in a number of ways, including a sliding farmer premium.
IJCRT2101137.pdf
Creators: name: V S, Ajith
Publisher: name: figshare
Year: 2021
Subjects: subject: 90201 Automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
subject: FOS: Environmental engineering

description: The performance of fuel cell depends on the various design and operating parameters. The Proton Exchange Membrane Fuel Cell (PEMFC) performance depends on the operating like operating temperature, pressure, stoichiometric ratio of hydrogen and oxygen and design parameters like landing width to channel width ratio (L:C), the shape of the flow channel and the number of passes in the flow channel. In this work, single pass interdigitated flow channel of 16 cm2 (4cm x 4cm) active area model has been designed using Creo software and it has been analyzed using CFD fluent software. The power density has been calculated for L:C - 2:2 with the effect of various operating temperature (303, 313,323 and 333K), constant pressure of 2 bar and constant inlet reactant mass flow rate of the PEMFC has been considered.
Thermally Assisted Spin Hall Effect
Creators: name: Schulz, Michael
name: Trimper, Steffen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The spin polarized charge transport is systematically analyzed as a thermally driven stochastic process. The approach is based on Kramers' equation describing the semiclassical motion under the inclusion of stochastic and damping forces. Due to the relativistic spin-orbit coupling the damping experiences a relativistic correction leading to an additional contribution within the spin Hall conductivity. A further contribution to the conductivity is originated from the averaged underlying crystal potential, the mean value of which depends significantly on the electric field. We derive an exact expression for the electrical conductivity. All corrections are estimated in lowest order of a relativistic approach and in the linear response regime.
description: 12 pages, 1 figure
Gate-induced interlayer asymmetry in ABA-stacked trilayer graphene
Creators: name: Koshino, Mikito
name: McCann, Edward
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate the electronic band structure of ABA-stacked trilayer graphene in the presence of external gates, using a self-consistent Hartree approximation to take account of screening. In the absence of a gate potential, there are separate pairs of linear and parabolic bands at low energy. A gate field perpendicular to the layers breaks mirror reflection symmetry with respect to the central layer and hybridizes the linear and parabolic low-energy bands, leaving a chiral Hamiltonian essentially different from that of monolayer or bilayer graphene. Using the self-consistent Born approximation, we find that the density of states and the minimal conductivity in the presence of disorder generally increase as the gate field increases, in sharp contrast with bilayer graphene.
description: 5 pages, 3 figures
Sequential addition of H2O, CH3OH, and NH3 to Al3O3-: A theoretical study
Creators: name: Guevara-Garcia, Alfredo
name: Martinez, Ana
name: Ortiz, J.V.
Publisher: name: AIP Publishing
Year: 2021

description: Photoelectron spectra of two species, Al3O3(H2O)(2)(-) and Al3O3(CH3OH)(2)(-), that are produced by the addition of two water or methanol molecules to Al3O3- are interpreted with density-functional geometry optimizations and electron propagator calculations of vertical electron detachment energies. In both cases, there is only one isomer that is responsible for the observed spectral features. A high barrier to the addition of a second molecule may impede the formation of Al3O3N2H6- clusters in an analogous experiment with NH3.
Sensitivity of the Cherenkov Telescope Array to emission from the gamma-ray counterparts of neutrino events
Creators: name: Sergijenko, O.
name: Brown, A.
name: Fiorillo, D.
name: de Leon, A. Rosales
name: Satalecka, K.
name: Tung, C. F.
name: Reimann, R.
name: Glauch, T.
name: Taboada, I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the possibility of detection of the VHE gamma-ray counterparts to the neutrino astrophysical sources within the Neutrino Target of Opportunity (NToO) program of CTA using the populations simulated by the FIRESONG software to resemble the diffuse astrophysical neutrino flux measured by IceCube. We derive the detection probability for different zenith angles and geomagnetic field configurations. The difference in detectability of sources between CTA-North and CTA-South for the average geomagnetic field is not substantial. We investigate the effect of a higher night-sky background and the preliminary CTA Alpha layout on the detection probability.
description: Proceedings of the 37th International Cosmic Ray Conference (ICRC2021); PoS(ICRC2021)975
Renormalization Invariants and Quark Flavor Mixings
Creators: name: Liu, Lu-Xin
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A set of renormalization invariants is constructed using approximate, two-flavor, analytic solutions for RGEs. These invariants exhibit explicitly the correlation between quark flavor mixings and mass ratios in the context of the SM, DHM and MSSM of electroweak interaction. The well known empirical relations $θ_{23}\propto m_s /m_b $, $θ_{13}\propto m_d /m_b$ can thus be understood as the result of renormalization evolution toward the infrared point. The validity of this approximation is evaluated by comparing the numerical solutions with the analytical approach. It is found that the scale dependence of these quantities for general three flavoring mixing follows closely these invariants up to the GUT scale.
description: 23 pages, 7 figures
Computational Segmentation of Sheet Music Books for Search and Retrieval
Creators: name: Gómez Castro, Samuel
Publisher: name: Zenodo
Year: 2024
Subjects: bootleg score
segmentation
DTW
OMR

description: Music books frequently includes numerous compositions or pieces in a singular volume. The manual segmentation of these compositions can be time intensive. The difficulty escalates further when handling scanned or digitized PDFs, particularly in the absence of explicit metadata or a table of contents. Recent progress in computational methods presents encouraging strategies for automatically dividing these musical volumes. IMSLP is full of books, but we cannot analyse them with MIR techniques because many tasks, specifically difficulty or structure analysis, require the books to be divided into pieces.

In this thesis the idea is to use DTW (Dynamic Time Warping) and OMR (Optical Music Recognition) to create a dataset with sheet music divided into pieces. The dataset will be created automatically but requires human in the loop to ensure that the ground truth is reliable and confident. We expect to create an interface to generate this dataset, using PDFs at the entrance and obtaining the different pieces of the sheet music. This GUI will suggest potential segmentation points allowing the user to make the final decision.
Quasiperiodic oscillations in Cen X-3 and the long term intensity variations
Creators: name: Raichur, Harsha
name: Paul, Biswajit
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have investigated properties of the Quasi Periodic Oscillation (QPO) features in the accretion powered X-ray pulsar Cen X-3 over a period of about four years using observations carried out with the Proportional Counter Array (PCA) of the {\it {Rossi X-ray Timing Explorer}}. The observations cover a wide range of X-ray intensity of the source in excess of the binary intensity modulation. We have detected QPOs in 11 out of a total 81 pointings with the PCA with rms intensity fluctuation upto 10%. The QPO peak frequency shows clustering around 40 and 90 mHz with the QPO frequency having no dependence on X-ray intensity. This indicates that either (a) the observed X-ray luminosity of the source is not related to the mass accretion rate or inner radius of the accretion disk or (b) that the QPO generation mechanism in Cen X-3 is different from the beat frequency model or Keplerian frequency model that is believed to be operational in most other transient and persistent X-ray pulsars. We have also found that, the rms variation in the 40 mHz QPO feature is not dependent on the X-ray energy, indicating that disk absorption related origin for the QPO is unlikely.
description: 15 pages, 2 tables, 5 figures, Accepted in ApJ
Integral approximations in ab initio, electron propagator calculations
Creators: name: Flores-Moreno, Roberto
name: Ortiz, J.V.
Publisher: name: AIP Publishing
Year: 2021

description: Treatments of interelectronic repulsion that avoid four-center integrals have been incorporated in ab initio, electron-propagator calculations with diagonal self-energy matrices. Whereas the formal scaling of arithmetic operations in the propagator calculations is unaffected, the reduction of storage requirements is substantial. Moreover, the scaling of integral transformations to the molecular orbital base is lowered by one order. Four-index, electron-repulsion integrals are regenerated from three-index intermediates. Test calculations with widely applied self-energy approximations demonstrate the accuracy of this approach. Only small errors are introduced when this technique is used with quasiparticle virtual orbitals, provided that conventional techniques of integral evaluation are used in the construction of density-difference matrices.
Dehydrogenated polycyclic aromatic hydrocarbons and UV bump
Creators: name: Malloci, G.
name: Mulas, G.
name: Cecchi-Pestellini, C.
name: Joblin, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent calculations have shown that the UV bump at about 217.5 nm in the extinction curve can be explained by a complex mixture of PAHs in several charge states. Other studies proposed that the carriers are a restricted population made of neutral and singly-ionised dehydrogenated coronene molecules (C24Hn, n less than 3), in line with models of the hydrogenation state of interstellar PAHs predicting that medium-sized species are highly dehydrogenated. To assess the observational consequences of the latter hypothesis we have undertaken a systematic study of the electronic spectra of dehydrogenated PAHs. We use our first results to see whether such spectra show strong general trends upon dehydrogenation. We used state-of-the-art techniques in the framework of the density functional theory (DFT) to obtain the electronic ground-state geometries, and of the time- dependent DFT to evaluate the electronic excited-state properties. We computed the absorption cross-section of the species C24Hn (n=12,10,8,6,4,2,0) in their neutral and cationic charge-states. Similar calculations were performed for other PAHs and their fullydehydrogenated counterparts. pi electron energies are always found to be strongly affected by dehydrogenation. In all cases we examined, progressive dehydrogenation translates into a correspondingly progressive blue shift of the main electronic transitions. In particular, the pi-pi* collective resonance becomes broader and bluer with dehydrogenation. Its calculated energy position is therefore predicted to fall in the gap between the UV bump and the far-UV rise of the extinction curve. Since this effect appears to be systematic, it poses a tight observational limit on the column density of strongly dehydrogenated medium-sized PAHs.
description: 5 pages, 7 figures, Astronomy & Astrophysics, in press
Transverse hydrodynamics with sudden isotropization and freeze-out
Creators: name: Ryblewski, R.
name: Florkowski, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We assume that the early evolution of matter produced in relativistic heavy-ion collisions is described by the transverse hydrodynamics. In this approach only transverse degrees of freedom are thermalized, while the longitudinal motion is described by free streaming. When the energy density of the system drops to a certain value, the system becomes isotropic (locally, in the momentum space) and freezes out. The sudden isotropization transition is described with the help of the Landau matching conditions, and the freeze-out is modeled with THERMINATOR. Within this scenario one is able to reproduce in the quite satisfactory way the transverse-momentum spectra, the elliptic flow coefficient v2, and the HBT radii of pions and kaons studied at RHIC (Au+Au collisions at the top beam energy). The obtained results indicate that the system produced at RHIC does not have to be fully thermalized in the early stage. On the other hand, the final three-dimensional thermalization is necessary to reproduce the HBT radius Rlong.
description: replaced with the version published in Acta Phys. Pol. Proceedings Supplement B
Partial photoionization cross sections of and Rydberg radicals
Creators: name: Velasco, A.M.
name: Lavin, C.
name: Martin, I.
name: Melin, J.
name: Ortiz, J.V.
Publisher: name: AIP Publishing
Year: 2021

description: ammonium and oxonium Rydberg radicals from the outermost, occupied orbitals of their respective ground states are reported. These properties are known to be relevant in photoelectron dynamics studies. For the present calculations, the molecular-adapted quantum defect orbital method has been employed. A Cooper minimum has been found in the 3sa1-kpt2 Rydberg channel of NH4 beyond the ionization threshold, which provides the main contribution to the photoionization of this radical. However, no net minimum is found in the partial cross section of H3O despite the presence of minima in the 3sa1-kpe and 3sa1-kpa1 Rydberg channels. The complete oscillator strength distributions spanning the discrete and continuous regions of both radicals exhibit the expected continuity across the ionization threshold.
Optimal Convergence Rates for Tikhonov Regularization in Besov Scales
Creators: name: Lorenz, Dirk
name: Trede, Dennis
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A52,65J20

description: In this paper we deal with linear inverse problems and convergence rates for Tikhonov regularization. We consider regularization in a scale of Banach spaces, namely the scale of Besov spaces. We show that regularization in Banach scales differs from regularization in Hilbert scales in the sense that it is possible that stronger source conditions may lead to weaker convergence rates and vive versa. Moreover, we present optimal source conditions for regularization in Besov scales.
title: Uterine malformation mimicking ovarian cancer
Creators: name: Vilela, Maria Leonor
Publisher: name: EURORAD
Year: 2024
Subjects: subject: Genital (female) imaging
subject: Genital / Reproductive system female
subject: MR
subject: Diagnostic procedure
subject: Congenital
subject: Clinical Case

description: Clinical History: A 57-year-old postmenopausal woman underwent a routine transvaginal ultrasound that detected a unilocular solid lesion in the right ovary, with intense peripheral colour-Doppler signal and a central hypoechoic area, with 31 x 28 x 25 mm (T x AP x L). The patient was asymptomatic. A magnetic resonance imaging (MRI) was requested for further characterisation of the lesion.

description: 57 years, female
Delocalized water and fluoride contributions to Dyson orbitals for electron detachment from the hydrated fluoride anion
Creators: name: Canuto, Sylvio
name: Coutinho, Kaline
name: Cabral, Benedito J. C.
name: Zakrzewski, V. G.
name: Ortiz, J.V.
Publisher: name: AIP Publishing
Year: 2021

description: The experimental vertical electron detachment energy VEDE of aqueous fluoride, F− H2O , is approximately 9.8 eV, but spectral assignment is complicated by interference between F− 2p and H2O 1b1 orbitals. The electronic structure of F− H2O is analyzed with Monte Carlo and ab initio quantum-mechanical calculations. Electron-propagator calculations in the partial third-order approximation yield a VEDE of 9.4 eV. None of the Dyson orbitals corresponding to valence VEDEs consists primarily of F 2p functions. These results and ground-state atomic charges indicate that the final, neutral state is more appropriately described as F− H2O + than as F H2O .
Collective excitations of rotating dusty plasma under quasi-localized charge approximation of strongly coupled systems
Creators: name: Kumar, Prince
name: Sharma, Devendra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Collective excitations of rotating dusty plasma are analyzed under the quasi localized charge approximation (QLCA) framework for strongly coupled systems by explicitly accounting for the dust rotation in the analysis. Considering the firm analogy of magnetoplasmons with "rotoplasmons" established by the recent rotating dusty plasma experiments, the relaxation introduced by the rotation in their strong coupling and 2-dimensional (often introduced by gravitational sedimentation) characteristics is emphasized in their dispersion. Finite rotation version of both strong and weak coupling dispersions is derived and analyzed, showing correspondence between a `faster rotating but weakly coupled' branch and its strongly coupled counterpart, relevant to both magnetized and unmagnetized dust experiments, in gravity or microgravity conditions. The first correspondence between their measurements in rotating plasmas and the QLCA produced dispersions in a rotating frame, with an independent numerical validation, is presented in detail.
Quasiparticle virtual orbitals in electron propagator calculations
Creators: name: Flores-Moreno, Roberto
name: Ortiz, J.V.
Publisher: name: AIP Publishing
Year: 2021

description: The computational limits of accurate electron propagator methods for the calculation of electron binding energies of large molecules are usually determined by the rank of the virtual orbital space. Electron density difference matrices that correspond to these transition energies in the second-order quasiparticle approximation may be used to obtain a virtual orbital space of reduced rank that introduces only minor deviations with respect to the results produced with the full, original set of virtual orbitals. Numerical tests show the superior accuracy and efficiency of this approach compared to the usual practice of omission of virtual orbitals with the highest energies.
On non-linear action of multiple M2-branes
Creators: name: Garousi, Mohammad R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A nonlinear SO(8) invariant BF type Lagrangian for describing the dynamics of N M2-branes in flat spacetime has been proposed recently in the literature which is an extension of the non-abelian DBI action of N D2-branes. This action includes only terms with even number of the totally antisymmetric tensor M^{IJK}. We argue that the action should contain terms with odd number of M^{IJL} as well. We modify the action to include them.
description: 8 pages, latex file; v4: another simple matrix for s^{IJ} has been found, some comments added
Existence and conservation laws for the Boltzmann-Fermi equation in a general domain
Creators: name: Allemand, Thibaut
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove an existence theorem for the Boltzmann-Fermi-Dirac equation for integrable collision kernels in possibly bounded domains with specular reflection at the boundaries, using the characteristic lines of the free transport. We then obtain that the solution satisfies the local conservations of mass, momentum and kinetic energy thanks to a dispersion technique.
description: 6 pages
Off-of-equilibrium effects on Kurtosis Along Strangeness-Neutral Trajectories
Creators: name: Dore, Travis
name: Karthein, Jamie
name: Mroczek, Debora
name: Parotto, Paolo
name: Noronha-Hostler, Jacquelyn
name: Ratti, Claudia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Beam Energy Scan program at the Relativistic Heavy Ion Collider (RHIC) is searching for the QCD critical point. The main signal for the critical point is the kurtosis of the distribution of proton yields obtained on an event-by-event basis where one expects a peak at the critical point. However, its exact behavior is still an open question due to out-of-equilibrium effects and uncertainty in the equation of state. Here we use a simplistic hydrodynamic model that enforces strangeness-neutrality, selecting trajectories that pass close to the critical point. We vary the initial conditions to estimate the effect of out-of-equilibrium hydrodynamics on the kurtosis signal.
Factors impacting interaction in discussion tasks in a tertiary Japanese foreign language classroom:Perspectives from conversation analysis
Creators: name: Ko, Hyesun
Publisher: name: Monash University
Year: 2021
Subjects: subject: 130103 Higher Education
subject: FOS: Educational sciences
subject: 200312 Japanese Language
subject: FOS: Languages and literature

description: This thesis examined multimodal interactional practices of advanced tertiary learners of Japanese as a Foreign Language working on classroom discussion tasks using the micro-analytic method of Conversation Analysis. The study focused on factors such as seating arrangements, the position of the projector screen, the task-types and the use of various artefacts. Research showed that students sitting in a side-by-side layout displayed a greater number of silences and delayed responses when displaying disagreement compared with students in a circular layout. These silences resulted in minimising a change in speaker; they also hampered progressivity of the interaction and activities. My findings, therefore, highlight the need to consider seating arrangements in combination with task-types to facilitate student collaborations and maximise the pedagogical potential of classroom configurations.
DESPLIEGUE DE LA CALIDAD EN LA GESTIÓN DE PROCESOS SUSTANTIVOS DE INSTITUCIONES DE EDUCACIÓN SUPERIOR CUBANAS
Creators: name: González Cruz, Ebir
Publisher: name: Zenodo
Year: 2025
Subjects: subject: QFD
subject: Housing Quality
subject: Management
subject: Quality Improvement
subject: Quality assurance
subject: Academies and Institutes/standards

description: En los marcos de la actualización del modelo económico cubano las instituciones de educación superior han sido convocadas a la elevación sistemática y sostenida de la calidad en los servicios educacionales. En tal sentido, el desarrollo de la calidad en la gestión de sus procesos sustantivos se convierte en una imperiosa necesidad. El estudio del estado del conocimiento y de la práctica sobre el despliegue de la calidad en estas instituciones permite formular como problema científico de la investigación la contradicción existente entre la necesidad de la calidad en las instituciones de educación superior como vía para mejorar la gestión con un enfoque estratégico y proactivo, y la no existencia, al menos de forma explícita y estructurada, de un instrumental metodológico para desplegar intencionalmente la calidad en la gestión de sus procesos sustantivos, orientada a la satisfacción de las partes interesadas en el mejor desempeño de la organización. Como solución al problema científico planteado se expone el desarrollo de un procedimiento general, apoyado en la metodología del QFD desplegada en el ciclo Deming, que integra herramientas de gestión y procedimientos específicos contextualizados a estas instituciones, entre los que se destacan los diagramas de análisis de árbol para la identificación de las características de la calidad real y para obtener las actividades del proceso objeto de estudio, los procedimientos específicos para normalizar elementos del proceso, de evaluación de la conformidad, de auditoria de gestión y de diagnóstico de  la cultura de la calidad y los indicadores para evaluar la calidad de la gestión. La aplicación del instrumental metodológico desarrollado, en un estudio de caso con unidades de análisis incrustadas extremas en el proceso sustantivo de ciencia e innovación tecnológica de la Universidad Central “Marta Abreu” de Las Villas, permitió con la utilización de la metodología CEDAC, la comprobación de la hipótesis general de la investigación originaria que sustenta esta tesis doctoral.
Radiative neutrino mass generation and dark energy
Creators: name: Bamba, K.
name: Geng, C. Q.
name: Ho, S. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the models with radiative neutrino mass generation and explore the relation between the neutrino masses and dark energy. In these models, the pseudo-Nambu-Goldston bosons (pNGBs) arise at two-loop level via the Majorana neutrino masses. In particular, we demonstrate that the potential energy of the pNGB can be the dark energy potential and the observed value of the equation of state (EoS) parameter of the universe, $i.e.$, $w\simeq -1$, can be realized.
description: 10 pages, 1 figure, a minor correction in Eq. (17)
Growth and distribution of the vegetation of a southern Fraser delta marsh
Creators: name: Moody, Anne Irene
Publisher: name: University of British Columbia
Year: 2010

description: The foreshore marshes of the Fraser River estuary are of great importance to migrating and resident waterfowl and shorebirds, transient juvenile salmonids, and to the many other components of the intricate estuarine food web. Urban residential, agricultural and ' industrial developments have encroached, and continue to encroach, upon these valuable foreshore marshes. This study was initiated to obtain information on the factors controlling, and characteristics of, the primary productivity, decomposition and spatial and temporal distributions of the emergent vegetation of Brunswick Point marsh. Sampling locations were selected to cover elevational and salinity gradients in this brackish tidal marsh. Periodic harvesting of the aerial vegetation components was undertaken to estimate net primary productivity. In addition, shoot density, reproductive shoot numbers, and nitrogen content, among other vegetation characteristics were related to such environmental variables as salinity, temperature and elevation. Standing crops for Scirpus mavitirms and Carecc lyngbyei showed a positive association with elevation; peak standing crops were 565 g/m² and 909 g/m² respectively. Shoot densities, reproduction shoot numbers and nitrogen content all showed relationships with elevation. The growth rate of Carex lyngbyei,, the most productive species, was very high, on the order of 20 g/m²/day in-May and June. During litter bag field trials, Triglochin mavitima and Salicovnia vivginiaa decomposed much more rapidly than did S. mavitimus and C. lyngbyei. In vitro decomposition studies reflected a similar pattern for these species. Transplant studies of the species used in the decomposition investigations showed that S. mavitimus tolerated the varied conditions at the four transplant sites best of all. The role of S. mavitimus as .a. pioneer species in marsh succession at Brunswick Point was further supported by field observations and historical information. A simple succession pattern occurs in the Brunswick Point marsh where S. mavitimus and S. ameviaanus colonize the barren mud and sand flats and are succeeded by C. lyngbyei. The emergent marshes of the Fraser River estuary have experienced major modifications during the past century and these may continue. Extensive dyking of high marsh areas has reduced the areal extent of foreshore marshes: The remaining marsh areas are an important source of detrital material which forms the basis of extensive estuarine food webs.
title: Egg removal device for the management of three stored product pests
Creators: name: Jayaprakash, S. A.
name: Mohan, S.
name: Ramaraju, K.
Publisher: name: Julius Kühn-Institut
Year: 2010
Subjects: subject: pulse beetle egg removal device
subject: Tribolium castaneum
subject: Rhyzopertha dominica
subject: Lasioderma serricorne

description: Julius-Kühn-Archiv; 425; 673-677
First order formalism of holographic Wilsonian renormalization group: Langevin equation
Creators: name: Oh, Jae-Hyuk
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a mathematical relationship between holographic Wilsonian renormalization group and stochastic quantization framework. We extend the original proposal given in arXiv:1209.2242 to interacting theories. The original proposal suggests that fictitious time(or stochastic time) evolution of stochastic 2-point correlation function will be identical to the radial evolution of the double trace operator of certain classes of holographic models, which are free theories in AdS space. We study holographic gravity models with interactions in AdS space and establish a map between the holographic renormalization flow of multi-trace operators and stochastic $n$-point functions. To give precise examples, we extensively study conformally coupled scalar theory in AdS$_6$. What we have found is that the stochastic time $t$ dependent 3-point function obtained from Langevin equation with its Euclidean action being given by $S_E=2I_{os}$ is identical to holographic renormalization group evolution of holographic triple trace operator as its energy scale $r$ changes once an identification of $t=r$ is made. $I_{os}$ is the on-shell action of holographic model of conformally coupled scalar theory at the AdS boundary. We argue that this can be fully extended to mathematical relationship between multi point functions and multi trace operators in each framework.
description: 1+23 pages
External forward shock origin of high energy emission for three GRBs detected by Fermi
Creators: name: Kumar, Pawan
name: Duran, Rodolfo Barniol
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the >100MeV data for 3 GRBs detected by Fermi (GRBs 080916C, 090510, 090902B) and find that these photons were generated via synchrotron emission in the external forward shock. We arrive at this conclusion by four different methods as follows. (1) We check the light curve and spectral behavior of the >100MeV data, and late time X-ray and optical data, and find them consistent with the closure relations for the external forward shock radiation. (2) We calculate the expected external forward shock synchrotron flux at 100MeV, and it matches the observed flux value. (3) We determine the external forward shock model parameters using the >100MeV data, and with these we calculate the expected X-ray and optical fluxes at late times (hours to days after the burst) and find these to be in good agreement with the observed data. (4) We calculate the external forward shock model parameters using only the late time X-ray, optical and radio data and from these estimate the expected flux at >100 MeV at the end of the sub-MeV burst (and at subsequent times) and find that to be entirely consistent with the high energy data obtained by Fermi/LAT. The ability of a simple external forward shock, to fit the entire data from the end of the burst (1-50s) to about a week, covering more than eight-decades in photon frequency provides compelling confirmation of the external forward shock synchrotron origin of the >100MeV radiation from these Fermi GRBs. Moreover, the parameters determined in points (3) and (4) show that the magnetic field required in these GRBs is consistent with shock-compressed magnetic field in the circum-stellar medium with pre-shocked values of a few tens of micro-Gauss.
description: 12 pages, 7 figures, 2 tables. Accepted for publication in MNRAS. Analytical estimates included
The RMS Survey: $^{13}$CO observations of candidate massive YSOs in the northern Galactic plane
Creators: name: Urquhart, J. S.
name: Busfield, A. L.
name: Hoare, M. G.
name: Lumsden, S. L.
name: Oudmaijer, R. D.
name: Moore, T. J. T.
name: Gibb, A. G.
name: Purcell, C. R.
name: Burton, M. G.
name: Maréchal, L. J. L.
name: Jiang, Z.
name: Wang, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: The Red MSX Source (RMS) survey is an ongoing multi-wavelength observational programme designed to return a large, high-resolution mid-infrared colour-selected sample of massive young stellar objects. Aims: A critical part of our follow-up programme is to conduct 13CO molecular line observations in order to determine kinematic distances to all of our MYSO candidates. These distances will allow us to identify and remove nearby low-mass YSOs and help in identifying evolved stars which are weak CO emitters. Method: We have used the 15 m James Clerk Maxwell Telescope (JCMT), the 13.7 m telescope of the Purple Mountain Observatory (PMO), the 20 m Onsala telescope and the 22m Mopra telescope to conduct molecular line observations towards 508 MYSOs candidates located in the 1st and 2nd Quadrants. Results: We detect 13CO emission towards 780 RMS sources which corresponds to approximately 84% of those observed (911). A total of 2595 emission components are detected above 3sigma level (typically T^*_{\rm{A}} > 0.3K), with multiple components being observed towards the majority of these sources -- 520 sources (~56%) -- with an average of ~4 molecular clouds detected along each line of sight. We have used archival CS (J=2-1) and maser velocities to resolve the component multiplicity towards 175 sources (~20%) and have derived a criterion which is used to identify the most likely component for a further 191 multiple component sources. Combined with the single component detections we have obtained unambiguous kinematic velocities for 638 of the 780 MYSOs candidates towards which CO is detected (~80% of the detections). Using the Galactic rotation curve we calculate kinematic distances for all detected components.
description: 13 pages and 9 figures, accepted for publication in A&A. Includes a large table and figure to be made available via CDS
Dissipation-driven selection under finite diffusion: hints from equilibrium and separation of time-scales
Creators: name: Liang, Shiling
name: Rios, Paolo De Los
name: Busiello, Daniel Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: When exposed to a thermal gradient, reaction networks can convert thermal energy into the chemical selection of states that would be unfavourable at equilibrium. The kinetics of reaction paths, and thus how fast they dissipate available energy, might be dominant in dictating the stationary populations of all chemical states out-of-equilibrium. This phenomenology has been theoretically explored mainly in the infinite diffusion limit. Here, we show that the regime in which the diffusion rate is finite, and also slower than some chemical reactions, might give birth to interesting features, as the maximization of selection, or the switch of the selected state at stationarity. We introduce a framework, rooted in a time-scale separation analysis, which is able to capture leading non-equilibrium features using only equilibrium arguments under well-defined conditions. In particular, it is possible to identify fast-dissipation subnetworks of reactions whose Boltzmann equilibrium dominates the steady-state of the entire system as a whole. Finally, we also show that the dissipated heat (and so the entropy production) can be estimated, under some approximations, through the heat capacity of fast-dissipation subnetworks. This work provides a tool to develop an intuitive equilibrium-based grasp on complex non-isothermal reaction networks, which are important paradigms to understand the emergence of complex structures from basic building blocks.
Coupling from the photosphere to the chromosphere and the corona
Creators: name: Wedemeyer-Böhm, S.
name: Lagg, A.
name: Nordlund, Å.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The atmosphere of the Sun is characterized by a complex interplay of competing physical processes: convection, radiation, conduction, and magnetic fields. The most obvious imprint of the solar convection and its overshooting in the low atmosphere is the granulation pattern. Beside this dominating scale there is a more or less smooth distribution of spatial scales, both towards smaller and larger scales, making the Sun essentially a multi-scale object. Convection and overshooting give the photosphere its face but also act as drivers for the layers above, namely the chromosphere and corona. The magnetic field configuration effectively couples the atmospheric layers on a multitude of spatial scales, for instance in the form of loops that are anchored in the convection zone and continue through the atmosphere up into the chromosphere and corona. The magnetic field is also an important structuring agent for the small, granulation-size scales, although (hydrodynamic) shock waves also play an important role -- especially in the internetwork atmosphere where mostly weak fields prevail. Based on recent results from observations and numerical simulations, we attempt to present a comprehensive picture of the atmosphere of the quiet Sun as a highly intermittent and dynamic system.
description: 33 pages, 16 figures; to appear in the Space Science Series of ISSI by Springer and in Space Science Reviews (accepted)
Memetic Superposition
Creators: name: Drainville, Raymond
Publisher: name: 21: Inquiries into Art, History, and the Visual
Year: 2023

description: This paper argues that our understanding of Internet memes can be enhanced by a comparison with Renaissance emblems as an historical precursor. By incorporating an analysis of visual themes and production contexts, it notes striking parallels around form, conceptions of invention, in-group/out-group dynamics, uneven reception, and exploitation of maturing new media environments. In both cases, a combination of conventionalised stylistic formats and borrowed referential content free the maker to focus on invention based upon incongruous multimodal juxtaposition.
description: 21: Inquiries into Art, History, and the Visual, Bd. 4 Nr. 4 (2023): 21: Inquiries into Art, History, and the Visual. Beiträge zur Kunstgeschichte und visuellen Kultur
Electron correlation and spin density wave order in iron pnictides
Creators: name: Zhou, Sen
name: Wang, Ziqiang
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the correlation effects on the electronic structure and spin density wave order in Fe-pnictides. Using the multiorbital Hubbard model and Gutzwiller projection, we show that nonperturbative correlation effects are essential to stabilize the metallic spin density wave phase for the intermediate correlation strengths appropriate for pnictides. We find that the ordered moments depend sensitively on the Hund's rule coupling $J$ but weakly on the intraorbital Coulomb repulsion $U$, varying from $0.3μ_B$ to $1.5μ_B$ in the range $J=0.3\sim0.8$ eV for $U=3\sim4$ eV. We obtain the phase diagram and discuss the effects of orbital order and electron doping, the evolution of the Fermi surface topology with the ordered moment, and compare to recent experiments.
description: 4 pages, 4 figures, revtex4 file, ersion to be published in Physical Review Letters
Democracy Health Questionnaire for Non-Formal Educational Institutions and Schools - LANGUAGE VERSIONS
Creators: name: Baketa, Nikola
name: Jokić, Boris
name: Matić Bojić, Jelena
name: Ristić Dedić, Zrinka
Publisher: name: Zenodo
Year: 2024

description: As part of deliverable D1.1 Democracy Health Questionnaire (DHQ) and Democracy Health Index (DHI), the DHQ instrument was developed for the context of non-formal education institutions and schools and translated into ten European languages (English, Catalan, Croatian, Finnish, French, German, Greek, Dutch, Slovenian, Spanish). The final versions of the DHQ were used in assessing democracy health of schools and institutions providing non-formal educational programmes across ten partner countries.
Erin Benay, Italy by Way of India. Translating Art and Devotion in the Early Modern World
Creators: name: Krass, Urte
Publisher: name: 21: Inquiries into Art, History, and the Visual
Year: 2023

description: 21: Inquiries into Art, History, and the Visual, Bd. 4 Nr. 4 (2023): 21: Inquiries into Art, History, and the Visual. Beiträge zur Kunstgeschichte und visuellen Kultur
Jet quenching and broadening: the transport coefficient $\hat{q}$ in an anisotropic plasma
Creators: name: Baier, Rolf
name: Mehtar-Tani, Yacine
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The jet quenching parameter $\hat{q}$ is analyzed for a quark jet propagating in an anisotropic plasma. The momentum anisotropy is calculated at high temperature of the underlying quark-gluon plasma. $\hat{q}$ is explicitly estimated in leading-logarithmic approximation by the broadening of the massless quark interacting via gluon exchange. A plasma instability is present. Strong indications are found that $\hat{q}$ is increasing with increasing anisotropy. Possible implications for the saturation scale $Q_s$ in $A-A$ collisions are pointed out.
description: 13
Homotopy, homology, and $GL_2$
Creators: name: Miemietz, Vanessa
name: Turner, Will
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 20G05; 18D05

description: We define weak 2-categories of finite dimensional algebras with bimodules, along with collections of operators $\mathbb{O}_{(c,x)}$ on these 2-categories. We prove that special examples $\mathbb{O}_p$ of these operators control all homological aspects of the rational representation theory of the algebraic group $GL_2$, over a field of positive characteristic. We prove that when $x$ is a Rickard tilting complex, the operators $\mathbb{O}_{(c,x)}$ honour derived equivalences, in a differential graded setting. We give a number of representation theoretic corollaries, such as the existence of tight $\mathbb{Z}_+$-gradings on Schur algebras $S(2,r)$, and the existence of braid group actions on the derived categories of blocks of these Schur algebras.
description: 28 pages