WorldWideScience

Sample records for numerical description rol

  1. Borehole and environmental protection descriptive and numerical data, Yamal Peninsula, Russia, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — This database of selected borehole records from the Yamal Peninsula, Russia, contains environmental descriptions (textual and numerical) of the units on the index...

  2. Numeric promoter description - A comparative view on concepts and general application.

    Science.gov (United States)

    Beier, Rico; Labudde, Dirk

    2016-01-01

    Nucleic acid molecules play a key role in a variety of biological processes. Starting from storage and transfer tasks, this also comprises the triggering of biological processes, regulatory effects and the active influence gained by target binding. Based on the experimental output (in this case promoter sequences), further in silico analyses aid in gaining new insights into these processes and interactions. The numerical description of nucleic acids thereby constitutes a bridge between the concrete biological issues and the analytical methods. Hence, this study compares 26 descriptor sets obtained by applying well-known numerical description concepts to an established dataset of 38 DNA promoter sequences. The suitability of the description sets was evaluated by computing partial least squares regression models and assessing the model accuracy. We conclude that the major importance regarding the descriptive power is attached to positional information rather than to explicitly incorporated physico-chemical information, since a sufficient amount of implicit physico-chemical information is already encoded in the nucleobase classification. The regression models especially benefited from employing the information that is encoded in the sequential and structural neighborhood of the nucleobases. Thus, the analyses of n-grams (short fragments of length n) suggested that they are valuable descriptors for DNA target interactions. A mixed n-gram descriptor set thereby yielded the best description of the promoter sequences. The corresponding regression model was checked and found to be plausible as it was able to reproduce the characteristic binding motifs of promoter sequences in a reasonable degree. As most functional nucleic acids are based on the principle of molecular recognition, the findings are not restricted to promoter sequences, but can rather be transferred to other kinds of functional nucleic acids. Thus, the concepts presented in this study could provide

  3. RFID gaat belangrijke rol spelen

    NARCIS (Netherlands)

    Luitjes, H.

    2004-01-01

    Radio Frequency Identification technology (RFID), de opvolger van de streepjescode, gaat in de verslogistiek een belangrijke rol spelen. Dat stelt dr. Henri Luitjes, hoofd van de afdeling verpakken, transport en logistiek van Wageningen UR. Ingegaan wordt op begrippen als shell life, derving,

  4. From continuum analytical description to discrete numerical modelling of localized fluidization in granular media

    Directory of Open Access Journals (Sweden)

    Puig i Montellà Eduard

    2017-01-01

    Full Text Available We present analytical and numerical results on localized fluidization within a granular layer subjected to a local injection of fluid. As the injection rate increases the three different regimes previously reported in the literature are recovered: homogeneous expansion of the bed, fluidized cavity in which fluidization starts developing above the injection area, and finally the chimney of fluidized grains when the fluidization zone reaches the free surface. The analytical approach is at the continuum scale, based on Darcy’s law and Therzaghi’s effective stress principle. It provides a good description of the phenomenon as long as the porosity of the granular assembly remains relatively homogeneous. The numerical approach is at the particle scale based on the coupled DEM-PFV method. It tackles the more heterogeneous situations which occur at larger injection rates. A direct link is evidenced between the occurrence of the different regimes of fluidization and the injection aperture. Finally, the merging of chimneys in case of two injection points is investigated.

  5. The effect of simplifying the building description on the numerical modeling of its thermal performance

    Energy Technology Data Exchange (ETDEWEB)

    Stetiu, Corina [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    1993-07-01

    A thermal building simulation program is a numerical model that calculates the response of the building envelopes to weather and human activity, simulates dynamic heating and cooling loads, and heating and cooling distribution systems, and models building equipment operation. The scope of the research is to supply the users of such programs with information about the dangers and benefits of simplifying the input to their models. The Introduction describes the advantages of modeling the heat transfer mechanisms in a building. The programs that perform this type of modeling have, however, limitations. The user is therefore often put in the situation of simplifying the floor plans of the building under study, but not being able to check the effects that this approximation introduces in the results of the simulation. Chapter 1 is a description of methods. It also introduces the floor plans for the office building under study and the ``reasonable`` floor plans simplifications. Chapter 2 presents DOE-2, the thermal building simulation program used in the sensitivity study. The evaluation of the accuracy of the DOE-2 program itself is also presented. Chapter 3 contains the sensitivity study. The complicated nature of the process of interpreting the temperature profile inside a space leads to the necessity of defining different building modes. The study compares the results from the model of the detailed building description with the results from the models of the same building having simplified floor plans. The conclusion is reached that a study of the effects of simplifying the floor plans of a building is important mainly for defining the cases in which this approximation is acceptable. Different results are obtained for different air conditioning/load regimes of the building. 9 refs., 24 figs.

  6. Identidad femenina y rol ocupacional

    OpenAIRE

    Semidober, Isabel

    2002-01-01

    Al tomar conciencia del cambio operado en el mundo en relación con la oferta estudiantil y laboral, en especial en el ámbito de Occidente, nos preguntamos sobre las posibilidades actuales de elección de las mujeres consultantes en relación con el armado de un proyecto de vida. Esta investigación se plantea detectar aquellas variables que inciden en el "ajuste" o "conflicto" de la identidad femenina, y el rol ocupacional en jóvenes mujeres estudiantes universitaria. Departamento de Psicolog...

  7. LOS JUEGOS DE ROL EN EL AULA

    Directory of Open Access Journals (Sweden)

    Mario Grande de Prado

    2010-11-01

    Full Text Available Las investigaciones realizadas en el ámbito de los juegos de rol y su influencia sobre las mentes de los jóvenes arrojan resultados positivos, es decir, no son peligrosos. Al mismo tiempo, los escasos artículos sobre juegos de rol y educación muestran referencias positivas sobre sus efectos educativos. Sin embargo los juegos de rol como tales no parecen ser relevantes actualmente como estrategia en Educación Secundaria. El presente artículo hace un repaso de las aportaciones existentes y realiza algunas propuestas sobre su posible aplicación.

  8. Numerical simulation of laser fusion plasmas using a reduced description formalism

    International Nuclear Information System (INIS)

    Faehl, R.J.

    1976-12-01

    A computational study of laser fusion plasmas with a new numerical model is undertaken. The plasma is described by fluid equations and the fields by the time dependent Maxwell's equations. Problems of stimulated Brillouin scattering, self-steepening of the critical surface, wave trapping near the critical surface, and competition of inverse bremsstrahlung absorption with Brillouin scattering are treated to demonstrate the flexibility of the model. New results are obtained for intensity-dependent inverse bremsstrahlung absorption. Absorption of laser energy via density fluctuations in the underdense plasma is discussed and studied numerically for assumed fluctuation distributions

  9. Numerical simulation of laser fusion plasmas using a reduced description formalism

    Energy Technology Data Exchange (ETDEWEB)

    Faehl, R.J.

    1976-12-01

    A computational study of laser fusion plasmas with a new numerical model is undertaken. The plasma is described by fluid equations and the fields by the time dependent Maxwell's equations. Problems of stimulated Brillouin scattering, self-steepening of the critical surface, wave trapping near the critical surface, and competition of inverse bremsstrahlung absorption with Brillouin scattering are treated to demonstrate the flexibility of the model. New results are obtained for intensity-dependent inverse bremsstrahlung absorption. Absorption of laser energy via density fluctuations in the underdense plasma is discussed and studied numerically for assumed fluctuation distributions.

  10. The TetR-type transcriptional repressor RolR from Corynebacterium glutamicum regulates resorcinol catabolism by binding to a unique operator, rolO.

    Science.gov (United States)

    Li, Tang; Zhao, Kexin; Huang, Yan; Li, Defeng; Jiang, Cheng-Ying; Zhou, Nan; Fan, Zheng; Liu, Shuang-Jiang

    2012-09-01

    The rol (designated for resorcinol) gene cluster rolRHMD is involved in resorcinol catabolism in Corynebacterium glutamicum, and RolR is the TetR-type regulator. In this study, we investigated how RolR regulated the transcription of the rol genes in C. glutamicum. The transcription start sites and promoters of rolR and rolHMD were identified. Quantitative reverse transcription-PCR and promoter activity analysis indicated that RolR negatively regulated the transcription of rolHMD and of its own gene. Further, a 29-bp operator rolO was located at the intergenic region of rolR and rolHMD and was identified as the sole binding site for RolR. It contained two overlapping inverted repeats and they were essential for RolR-binding. The binding of RolR to rolO was affected by resorcinol and hydroxyquinol, which are the starting compounds of resorcinol catabolic pathway. These two compounds were able to dissociate RolR-rolO complex, thus releasing RolR from the complex and derepressing the transcription of rol genes in C. glutamicum. It is proposed that the binding of RolR to its operator rolO blocks the transcription of rolHMD and of its own gene, thus negatively regulated resorcinol degradation in C. glutamicum.

  11. Free Software Development. 3. Numerical Description of Soft Acid with Soft Base Titration

    OpenAIRE

    Lorentz JÄNTSCHI; Horea Iustin NAŞCU

    2002-01-01

    The analytical methods of qualitative and quantitative determination of ions in solutions are very flexible to automation. The present work is focus on modeling the process of titration and presents a numerical simulation of acid-base titration. A PHP program to compute all iterations in titration process that solves a 3th rank equation to find value of pH for was built and is available through http internet protocol at the address: http://vl.academicdirect.org/molecular_dynamics/ab_titra...

  12. Theoretical description and numerical calculations of significant three-dimensional magnetic field configurations

    Energy Technology Data Exchange (ETDEWEB)

    Mierau, Anna; Weiland, Thomas [Technische Universitaet Darmstadt (DE). Institut fuer Theorie Elektromagnetischer Felder (TEMF); Schnizer, Pierre; Fischer, Egbert [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Darmstadt (Germany); Akishin, Pavel [JINR, Dubna (Russian Federation)

    2010-07-01

    The heavy ion synchrotron SIS100, the core component of the Facility of Antiproton and Ion Research will accelerate high current ion beams of up to U{sup 27+}. For operating such a machine the static and transient magnetic field quality must be fully understood. This is also necessary to keep the beam losses well below acceptable limits and to prepare a sound strategy for high resolution magnetic measurements and data analysis. Challenging preconditions to perform such work are to find a proper description for the non. Cartesian symmetry of the magnets, most important for curved dipoles with elliptical apertures. We describe the parameterisation methods using elliptic and toroidal multipoles and summarise comparing the calculated to the measured field quality.

  13. Free Software Development. 3. Numerical Description of Soft Acid with Soft Base Titration

    Directory of Open Access Journals (Sweden)

    Lorentz JÄNTSCHI

    2002-12-01

    Full Text Available The analytical methods of qualitative and quantitative determination of ions in solutions are very flexible to automation. The present work is focus on modeling the process of titration and presents a numerical simulation of acid-base titration. A PHP program to compute all iterations in titration process that solves a 3th rank equation to find value of pH for was built and is available through http internet protocol at the address: http://vl.academicdirect.org/molecular_dynamics/ab_titrations/v1.1/ The method allows expressing the value of pH in any point of titration process and permits to observe the equivalence point of titration.

  14. Regional hydrogeological simulations for Forsmark - numerical modelling using CONNECTFLOW. Preliminary site description Forsmark area - version 1.2

    Energy Technology Data Exchange (ETDEWEB)

    Hartley, Lee; Cox, Ian; Hunter, Fiona; Jackson, Peter; Joyce, Steve; Swift, Ben [Serco Assurance, Risley (United Kingdom); Gylling, Bjoern; Marsic, Niko [Kemakta Konsult AB, Stockholm (Sweden)

    2005-05-01

    The Swedish Nuclear Fuel and Waste Management Company (SKB) carries out site investigations in two different candidate areas in Sweden with the objective of describing the in-situ conditions for a bedrock repository for spent nuclear fuel. The site characterisation work is divided into two phases, an initial site investigation phase (IPLU) and a complete site investigation phase (KPLU). The results of IPLU are used as a basis for deciding on a subsequent KPLU phase. On the basis of the KPLU investigations a decision is made as to whether detailed characterisation will be performed (including sinking of a shaft). An integrated component in the site characterisation work is the development of site descriptive models. These comprise basic models in three dimensions with an accompanying text description. Central in the modelling work is the geological model, which provides the geometrical context in terms of a model of deformation zones and the rock mass between the zones. Using the geological and geometrical description models as a basis, descriptive models for other geo-disciplines (hydrogeology, hydro-geochemistry, rock mechanics, thermal properties and transport properties) will be developed. Great care is taken to arrive at a general consistency in the description of the various models and assessment of uncertainty and possible needs of alternative models. Here, a numerical model is developed on a regional-scale (hundreds of square kilometres) to understand the zone of influence for groundwater flow that affects the Forsmark area. Transport calculations are then performed by particle tracking from a local-scale release area (a few square kilometres) to identify potential discharge areas for the site and using greater grid resolution. The main objective of this study is to support the development of a preliminary Site Description of the Forsmark area on a regional-scale based on the available data of 30 June 2004 and the previous Site Description. A more specific

  15. Advanced numerical description of the behavior of 700 C steam power plant components

    Energy Technology Data Exchange (ETDEWEB)

    Maile, K. [Materialpruefungsanstalt, Univ. Stuttgart (Germany); Schmidt, K.; Roos, E.; Klenk, A.; Speicher, M.

    2009-07-01

    To make full use of the strength potential of new boiler materials like the new 9-11% Cr steels and nickel based alloys, taking into account their specific stress-strain relaxation behavior, new design methods are required in the design of today's power plants. Highly loaded components are approaching more and more the classical design limits with regard to critical wall thicknesses and the related tolerable thermal gradients, due to planed increases of steam parameters like steam pressure and steam temperature. ''Design by analysis'' can be realized by modern state of the art Numerical Finite Element (FE) simulation codes and in some cases by the use of user defined advanced inelastic material laws. These material laws have to be adjusted to specific material behavior of new boiler materials. To model the strain and stress situation in components under high temperature loading, a constitutive equation based on a Graham-Walles approach is used in this paper. Furthermore essential steps and recommendations to implement experimental data in the user defined subroutines and the subsequent integration of the subroutines in modern FE codes like ABAQUS trademark and ANSYS trademark are given. As an example, the results of FE simulations of components like hollow cylinders and waterwall like components made of Alloy 617 or 9-11% Cr steels are discussed and verified with experimental results. In a last step, the successful application of the developed creep equation will be demonstrated by calculating the creep strains and stress relaxation of a P92 steam header under constant loading. (orig.)

  16. Narrative descriptions should replace grades and numerical ratings for clinical performance in medical education in the United States.

    Science.gov (United States)

    Hanson, Janice L; Rosenberg, Adam A; Lane, J Lindsey

    2013-01-01

    In medical education, evaluation of clinical performance is based almost universally on rating scales for defined aspects of performance and scores on examinations and checklists. Unfortunately, scores and grades do not capture progress and competence among learners in the complex tasks and roles required to practice medicine. While the literature suggests serious problems with the validity and reliability of ratings of clinical performance based on numerical scores, the critical issue is not that judgments about what is observed vary from rater to rater but that these judgments are lost when translated into numbers on a scale. As the Next Accreditation System of the Accreditation Council on Graduate Medical Education (ACGME) takes effect, medical educators have an opportunity to create new processes of evaluation to document and facilitate progress of medical learners in the required areas of competence. Proposal and initial experience: Narrative descriptions of learner performance in the clinical environment, gathered using a framework for observation that builds a shared understanding of competence among the faculty, promise to provide meaningful qualitative data closely linked to the work of physicians. With descriptions grouped in categories and matched to milestones, core faculty can place each learner along the milestones' continua of progress. This provides the foundation for meaningful feedback to facilitate the progress of each learner as well as documentation of progress toward competence. This narrative evaluation system addresses educational needs as well as the goals of the Next Accreditation System for explicitly documented progress. Educators at other levels of education and in other professions experience similar needs for authentic assessment and, with meaningful frameworks that describe roles and tasks, may also find useful a system built on descriptions of learner performance in actual work settings. We must place medical learning and assessment

  17. Regional hydrogeological simulations. Numerical modelling using ConnectFlow. Preliminary site description Simpevarp sub area - version 1.2

    Energy Technology Data Exchange (ETDEWEB)

    Hartley, Lee; Hoch, Andrew; Hunter, Fiona; Jackson, Peter [Serco Assurance, Risley (United Kingdom); Marsic, Niko [Kemakta Konsult, Stockholm (Sweden)

    2005-02-01

    The Swedish Nuclear Fuel and Waste Management Company (SKB) carries out site investigations in two different candidate areas in Sweden with the objective of describing the in situ conditions for a bedrock repository for spent nuclear fuel. The two candidate areas are named Forsmark and Simpevarp. The site characterisation work is divided into two phases, an initial site investigation phase (IPLU) and a complete site investigation phase (KPLU). The results of IPLU are used as a basis for deciding on a subsequent KPLU phase. On the basis of the KPLU investigations a decision is made as to whether detailed characterisation will be performed (including sinking of a shaft).An integrated component in the site characterisation work is the development of site descriptive models. These comprise basic models in three dimensions with an accompanying text description. Central in the modelling work is the geological model which provides the geometrical context in terms of a model of deformation zones and the rock mass between the zones. Using the geological and geometrical description models as a basis, descriptive models for other geo-disciplines (hydrogeology, hydro-geochemistry, rock mechanics, thermal properties and transport properties) will be developed. Great care is taken to arrive at a general consistency in the description of the various models and assessment of uncertainty and possible needs of alternative models.Here, a numerical model is developed on a regional-scale (hundreds of square kilometres) to understand the zone of influence for groundwater flow that effects the Simpevarp area. Transport calculations are then performed by particle tracking from a local-scale release area (tens of square kilometres) to identify potential discharge areas for the site. The transport from the two site-scale release areas (a few square kilometres) at the Simpevarp site and the Laxemar site are also considered more specifically and using greater grid resolution.The main

  18. ROL-PLAYING AND GENDER ROLES JUEGOS DE ROL Y ROLES DE GÉNERO

    Directory of Open Access Journals (Sweden)

    Juan Ramón Carbó García

    2010-11-01

    Full Text Available This paper focuses on the role playing games evolution from the Gender perspective. The authors analyze the evolution of the role playing games and the progressive incorporation of women to this form of games.El artículo analiza la evolución de los juegos de rol desde la perspectiva de los estudios de género. Los autores analizan la evolución de los juegos de rol y la incorporación progresiva de las mujeres a esta forma de ocio.

  19. Palliative Care Medical Education in European Universities: A Descriptive Study and Numerical Scoring System Proposal for Assessing Educational Development.

    Science.gov (United States)

    Carrasco, José Miguel; Lynch, Thomas J; Garralda, Eduardo; Woitha, Kathrin; Elsner, Frank; Filbet, Marilène; Ellershaw, John E; Clark, David; Centeno, Carlos

    2015-10-01

    The lack of palliative medicine (PM) education has been identified as a barrier to the development of the discipline. A number of international institutions have called for its implementation within undergraduate medical curricula. The objectives are to describe the situation of undergraduate PM education in Europe and to propose a scoring system to evaluate its status. This descriptive study was conducted with data provided by key experts from countries of the World Health Organization European Region (n = 53). A numerical scoring system was developed through consensus techniques. Forty-three countries (81%) provided the requested information. In 13 countries (30%), a PM course is taught in all medical schools, being compulsory in six of them (14%). In 15 countries (35%), PM is taught in at least one university. In 14 countries (33%), PM is not taught within medical curricula. A full professor of PM was identified in 40% of countries. Three indicators were developed to construct a scale (rank 0-100) of educational development: 1) proportion of medical schools that teach PM (weight = 32%); 2) proportion of medical schools that offer PM as a compulsory subject (weight = 40%); 3) total number of PM professors (weight = 28%). The highest level of PM educational development was found in Israel, Norway, the U.K., Belgium, France, Austria, Germany, and Ireland. PM is taught in a substantial number of undergraduate medical programs at European universities, and a qualified teaching structure is emerging; however, there is a wide variation in the level of PM educational development between individual countries. Copyright © 2015 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.

  20. Regional hydrogeological simulations for Forsmark - numerical modelling using DarcyTools. Preliminary site description Forsmark area version 1.2

    International Nuclear Information System (INIS)

    Follin, Sven; Stigsson, Martin; Svensson, Urban

    2005-12-01

    A numerical model is developed on a regional-scale (hundreds of square kilometres) to study the zone of influence for variable-density groundwater flow that affects the Forsmark area. Transport calculations are performed by particle tracking from a local-scale release area (a few square kilometres) to test the sensitivity to different hydrogeological uncertainties and the need for far-field realism. The main objectives of the regional flow modelling were to achieve the following: I. Palaeo-hydrogeological understanding: An improved understanding of the palaeohydrogeological conditions is necessary in order to gain credibility for the site descriptive model in general and the hydrogeological description in particular. This requires modelling of the groundwater flow from the last glaciation up to present-day with comparisons against measured TDS and other hydro-geochemical measures. II. Simulation of flow paths: The simulation and visualisation of flow paths from a tentative repository area is a means for describing the role of the current understanding of the modelled hydrogeological conditions in the target volume, i.e. the conditions of primary interest for Safety Assessment. Of particular interest here is demonstration of the need for detailed far-field realism in the numerical simulations. The motivation for a particular model size (and resolution) and set of boundary conditions for a realistic description of the recharge and discharge connected to the flow at repository depth is an essential part of the groundwater flow path simulations. The numerical modelling was performed by two separate modelling teams, the ConnectFlow Team and the DarcyTools Team. The work presented in this report was based on the computer code DarcyTools developed by Computer-aided Fluid Engineering. DarcyTools is a kind of equivalent porous media (EPM) flow code specifically designed to treat flow and salt transport in sparsely fractured crystalline rock intersected by transmissive

  1. Regional hydrogeological simulations for Forsmark - numerical modelling using DarcyTools. Preliminary site description Forsmark area version 1.2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-12-15

    A numerical model is developed on a regional-scale (hundreds of square kilometres) to study the zone of influence for variable-density groundwater flow that affects the Forsmark area. Transport calculations are performed by particle tracking from a local-scale release area (a few square kilometres) to test the sensitivity to different hydrogeological uncertainties and the need for far-field realism. The main objectives of the regional flow modelling were to achieve the following: I. Palaeo-hydrogeological understanding: An improved understanding of the palaeohydrogeological conditions is necessary in order to gain credibility for the site descriptive model in general and the hydrogeological description in particular. This requires modelling of the groundwater flow from the last glaciation up to present-day with comparisons against measured TDS and other hydro-geochemical measures. II. Simulation of flow paths: The simulation and visualisation of flow paths from a tentative repository area is a means for describing the role of the current understanding of the modelled hydrogeological conditions in the target volume, i.e. the conditions of primary interest for Safety Assessment. Of particular interest here is demonstration of the need for detailed far-field realism in the numerical simulations. The motivation for a particular model size (and resolution) and set of boundary conditions for a realistic description of the recharge and discharge connected to the flow at repository depth is an essential part of the groundwater flow path simulations. The numerical modelling was performed by two separate modelling teams, the ConnectFlow Team and the DarcyTools Team. The work presented in this report was based on the computer code DarcyTools developed by Computer-aided Fluid Engineering. DarcyTools is a kind of equivalent porous media (EPM) flow code specifically designed to treat flow and salt transport in sparsely fractured crystalline rock intersected by transmissive

  2. NUMERICAL DESCRIPTION OF THE GROUNDWATER LEVELS CHANGE DUE TO THE RE- AND DISCHARGE OF THE ADJACENT SURFACE WATER BODIES – PROBLEMS AND CASE STUDIES

    Directory of Open Access Journals (Sweden)

    G. Trendafilov

    2012-03-01

    Full Text Available Numerical description of the groundwater levels change due to the re- and discharge of the adjacent surface water bodies – problems and case studies. The water exchange between the surface water bodies (rivers, lakes, seas, dams, etc. and adjacent water-bearing beds is possible if a hydraulic connection between them exists. The change of the levels of the first ones causes corresponding changes of the levels of the aquifers in the surrounding territories and vice versa. In many cases this interaction is the primary mechanism determining the groundwater regime. The aim of the present study is to examine the applicability of the most general possible analytical approach for quantitative description of the phenomena in the case of short-term changes with a significant magnitude (high waves of the level of the river of Maritsa in Plovdiv, Bulgaria. The study is performed through numerical simulations/calculations, with especially composed by the authors for this work computational programs.

  3. Numerical modelling of surface hydrology and near-surface hydrogeology at Forsmark. Site descriptive modelling SDM. Site Forsmark

    International Nuclear Information System (INIS)

    Bosson, Emma; Gustafsson, Lars-Goeran; Sassner, Mona

    2008-09-01

    SKB is currently performing site investigations at two potential sites for a final repository for spent nuclear fuel. This report presents results of water flow and solute transport modelling of the Forsmark site. The modelling reported in this document focused on the near-surface groundwater, i.e. groundwater in Quaternary deposits and shallow rock, and surface water systems, and was performed using the MIKE SHE tool. The most recent site data used in the modelling were delivered in the Forsmark 2.3 dataset, which had its 'data freeze' on March 31, 2007. The present modelling is performed in support of the final version of the Forsmark site description that is produced during the site investigation phase. In this work, the hydrological modelling system MIKE SHE has been used to describe near-surface groundwater flow and the contact between groundwater and surface water at the Forsmark site. The surface water system at Forsmark is described with the one-dimensional 'channel flow' modelling tool MIKE 11, which is fully and dynamically integrated with MIKE SHE. The MIKE SHE model was updated with data from the F2.3 data freeze. The main updates concerned the geological description of the saturated zone and the time series data on water levels and surface water discharges. The time series data used as input data and for calibration and validation was extended until the Forsmark 2.3 data freeze (March 31, 2007). The present work can be subdivided into the following four parts: 1. Update of the numerical flow model. 2. Sensitivity analysis and calibration of the model parameters. 3. Validation of the calibrated model, followed by evaluation and identification of discrepancies between measurements and model results. 4. Additional sensitivity analysis and calibration in order to resolve the problems identified in point three above. The main actions taken during the calibration can be summarised as follows: 1. The potential evapotranspiration was reduced in order to reach

  4. "Gtool5": a Fortran90 library of input/output interfaces for self-descriptive multi-dimensional numerical data

    Directory of Open Access Journals (Sweden)

    M. Ishiwatari

    2012-04-01

    Full Text Available A Fortran90 input/output library, "gtool5", is developed for use with numerical simulation models in the fields of Earth and planetary sciences. The use of this library will simplify implementation of input/output operations into program code in a consolidated form independent of the size and complexity of the software and data. The library also enables simple specification of the metadata needed for post-processing and visualization of the data. These aspects improve the readability of simulation code, which facilitates the simultaneous performance of multiple numerical experiments with different software and efficiency in examining and comparing the numerical results. The library is expected to provide a common software platform to reinforce research on, for instance, the atmosphere and ocean, where a close combination of multiple simulation models with a wide variety of complexity of physics implementations from massive climate models to simple geophysical fluid dynamics models is required.

  5. EL PERFIL DEL EDITOR DE JUEGOS DE ROL

    Directory of Open Access Journals (Sweden)

    Héctor Sevillano Pareja

    2010-11-01

    Full Text Available El presente trabajo estudia y analiza, a través de diversas encuestas personalizadas, el perfil tipo que presentan los profesionales que se dedican al arte de editar libros de rol en España.

  6. Diffusion in a tube of varying cross section: Numerical study of reduction to effective one-dimensional description

    Science.gov (United States)

    Berezhkovskii, A. M.; Pustovoit, M. A.; Bezrukov, S. M.

    2007-04-01

    Brownian dynamics simulations of the particle diffusing in a long conical tube (the length of the tube is much greater than its smallest radius) are used to study reduction of the three-dimensional diffusion in tubes of varying cross section to an effective one-dimensional description. The authors find that the one-dimensional description in the form of the Fick-Jacobs equation with a position-dependent diffusion coefficient, D(x ), suggested by Zwanzig [J. Phys. Chem. 96, 3926 (1992)], with D(x ) given by the Reguera-Rubí formula [Phys. Rev. E 64, 061106 (2001)], D(x )=D/√1+R'(x)2, where D is the particle diffusion coefficient in the absence of constraints, and R(x ) is the tube radius at x, is valid when ∣R'(x)∣⩽1. When ∣R'(x)∣>1, higher spatial derivatives of the one-dimensional concentration in the effective diffusion equation cannot be neglected anymore as was indicated by Kalinay and Percus [J. Chem. Phys. 122, 204701 (2005)]. Thus the reduction to the effective one-dimensional description is a useful tool only when ∣R'(x)∣⩽1 since in this case one can apply the powerful standard methods to analyze the resulting diffusion equation.

  7. Description of an identification method of thermocouple time constant based on application of recursive numerical filtering to temperature fluctuation

    International Nuclear Information System (INIS)

    Bernardin, B.; Le Guillou, G.; Parcy, JP.

    1981-04-01

    Usual spectral methods, based on temperature fluctuation analysis, aiming at thermocouple time constant identification are using an equipment too much sophisticated for on-line application. It is shown that numerical filtering is optimal for this application, the equipment is simpler than for spectral methods and less samples of signals are needed for the same accuracy. The method is described and a parametric study was performed using a temperature noise simulator [fr

  8. The Agrobacterium rhizogenes oncogenes rolB and ORF13 increase formation of generative shoots and induce dwarfism in Arabidopsis thaliana (L.) Heynh

    DEFF Research Database (Denmark)

    Kodahl, Nete; Müller, Renate; Lütken, Henrik Vlk

    2016-01-01

    Plant transformation with the wild type Ri plasmid T-DNA of Agrobacterium rhizogenes is a promising method for breeding of compact plants and has been the subject of numerous studies. However, knowledge concerning the isolated functions of single genes and ORFs from the plasmid is limited. The rol...

  9. Numerical modelling of solute transport at Forsmark with MIKE SHE. Site descriptive modelling SDM-Site Forsmark

    Energy Technology Data Exchange (ETDEWEB)

    Gustafsson, Lars-Goeran; Sassner, Mona (DHI Sverige AB, Stockholm (Sweden)); Bosson, Emma (Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden))

    2008-12-15

    The Swedish Nuclear Fuel and Waste Management Company (SKB) is performing site investigations at two different locations in Sweden, referred to as the Forsmark and Laxemar areas, with the objective of siting a final repository for high-level radioactive waste. Data from the site investigations are used in a variety of modelling activities. This report presents model development and results of numerical transport modelling based on the numerical flow modelling of surface water and near-surface groundwater at the Forsmark site. The numerical modelling was performed using the modelling tool MIKE SHE and is based on the site data and conceptual model of the Forsmark areas. This report presents solute transport applications based on both particle tracking simulations and advection-dispersion calculations. The MIKE SHE model is the basis for the transport modelling presented in this report. Simulation cases relevant for the transport from a deep geological repository have been studied, but also the pattern of near surface recharge and discharge areas. When the main part of the modelling work presented in this report was carried out, the flow modelling of the Forsmark site was not finalised. Thus, the focus of this work is to describe the sensitivity to different transport parameters, and not to point out specific areas as discharge areas from a future repository (this is to be done later, within the framework of the safety assessment). In the last chapter, however, results based on simulations with the re-calibrated MIKE SHE flow model are presented. The results from the MIKE SHE water movement calculations were used by cycling the calculated transient flow field for a selected one-year period as many times as needed to achieve the desired simulation period. The solute source was located either in the bedrock or on top of the model. In total, 15 different transport simulation cases were studied. Five of the simulations were particle tracking simulations, whereas the rest

  10. Entrevista pediátrica. Rol de la enfermera

    OpenAIRE

    Martínez Barellas, María Rosa; Isla Pera, Ma. Pilar (María Pilar); Lluch Canut, Ma. Teresa

    1993-01-01

    Interesante revisión sobre el rol y la importancia de la entrevista dentro del campo de Atención Primaria de Salud, como elemento que forma parte de una asistencia bien organizada que dé soluciones a las exigencias de salud planteadas por los usuarios. Se contempla su función como método de comunicación a utilizar dentro del ámbito de la educación sanitaria; sus características; los diferentes tipos de entrevista; las partes de una entrevista semiestructurada, y el rol de la enfermera en la e...

  11. Numerical Models for Exact Description of in-situ Digital In-Line Holography Experiments with Irregularly-Shaped Arbitrarily-Located Particles

    Directory of Open Access Journals (Sweden)

    Marc Brunel

    2015-04-01

    Full Text Available We present the development of a numerical simulator for digital in-line holography applications. In-line holograms of arbitrarily shaped and arbitrarily located objects are calculated using generalized Huygens-Fresnel integrals. The objects are 2D opaque or phase objects. The optical set-up is described by its optical transfer matrix. A wide variety of optical systems, involving windows, spherical or cylindrical lenses, can thus be taken into account. It makes the simulator applicable for design and description of in situ experiments. We discuss future applications of this simulator for detection of nanoparticles in droplets, or calibration of airborne instruments that detect and measure ice crystals in the atmosphere.

  12. Pensioen, Keuze en de Rol van de Pensioenprofessional

    NARCIS (Netherlands)

    Ponds, Eduard; Steenbeek, O.W.; Vonken, Joyce

    Dit stuk vat de resultaten samen van een aantal recente onderzoeken naar de mogelijke rol van de professional in het ondersteunen van deelnemers bij de omgang met keuzeopties in pensioenen. Neuromarketing onderzoek (hersenscans) bevestigt dat deelnemers tweeslachtig zijn ten aanzien van

  13. Mitología, cultura popular y juegos de rol

    Directory of Open Access Journals (Sweden)

    Iván Pérez Miranda

    2016-10-01

    Full Text Available Desde sus orígenes, los juegos de rol han estado vinculados con la literatura fantástica, que a su vez reelabora el material mítico. Juegos de rol y literatura fantástica establecerán un diálogo ejerciéndose una influencia recíproca y entrando en contacto con otros medios como el cine, los cómics o los videojuegos. En este diálogo, la mitología estará bien presente. Este artículo pretende indagar en las diversas relaciones que se establecen entre la mitología, la cultura popular y los juegos de rol, desde sus influencias y fuentes de inspiración, hasta las propias estructuras de las historias narradas en los juegos de rol, donde los jugadores toman el papel de héroes que interpretan en sus viajes iniciáticos, un viaje con un gran potencial educativo en el que tanto los jugadores como los personajes madurarán a través de sus propias historias interminables.

  14. Die museum se rol in die aankweek van 'n omgewingsbewustheid ...

    African Journals Online (AJOL)

    Die museum se rol in die aankweek van 'n omgewingsbewustheid. Martie van der Merwe. Abstract. No Abstract. Full Text: EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · Creative Commons License This work is licensed under a Creative Commons Attribution 3.0 ...

  15. Ruimtelike beplanning: die rol van die stads - en streeksbeplanner ...

    African Journals Online (AJOL)

    Ruimtelike beplanning: die rol van die stads - en streeksbeplanner in die saw. R Erasmus. Abstract. Since 1978 regional and town planners are employed in the SADF on a permanent basis as well as in the capacity of national service men. These men are all academically qualified and as such satisfy a need that developed ...

  16. Rooting and Other Characteristics of a Transgenic Walnut Hybrid (Juglans hindsii x J. regia) Rootstock Expressing rolABC

    Science.gov (United States)

    Kourosh Vahdati; James R. McKenna; Abhaya M. Dandekar; Charles A. Leslie; Sandie L. Uratsu; Wesley P. Hackett; Paola Negri; Gale H. McGranahan

    2002-01-01

    Walnuts (Juglans spp.) are difficult-to-root woody plants. The rolABC genes (rolA + rolB + rolC), derived from the bacteria Agrobacterium rhizogenes, have been shown to increase the rooting potential of other difficult-to-root woody plants. We inserted the...

  17. Biologia floral de Virola surinamensis (Rol. Warb. (Myristicaceae Virola surinamensis (Rol. Warb. (Myristicaceae floral biology

    Directory of Open Access Journals (Sweden)

    Mario Augusto Gonçalves Jardim

    2007-12-01

    Full Text Available Neste artigo são apresentadas informações sobre a biologia floral de Virola surinamensis (Rol. Warb. (Myristicaceae, espécie florestal dióica de relevante importância econômica na região amazônica. O estudo foi realizado em uma área de várzea próximo à bacia do igarapé Murutucum, lado direito do rio Guamá, localizada no Campus da Faculdade de Ciências Agrárias do Pará, na cidade de Belém, Estado do Pará, no período de janeiro a dezembro de 2001. Avaliou-se a biologia floral desde o aparecimento dos botões florais até a senescência das flores estaminadas, bem como a formação de frutos nas flores pistiladas. Testes bioquímicos foram aplicados para verificação de odor, pigmentos, osmóforos e receptividade do estigma. A observação no comportamento dos visitantes florais foi realizada durante o período diurno, registrando-se os horários de visitas, tempo de permanência na flor e freqüência; alguns indivíduos foram coletados com rede entomológica e identificados no Departamento de Zoologia do Museu Paraense Emílio Goeldi. A antese ocorreu entre 6 e 16 h nas flores estaminadas e entre 8 e 16 h nas flores pistiladas; a presença de odor foi constatada apenas nas flores estaminadas, enquanto os pigmentos e osmóforos foram encontrados em ambas as flores; o estigma mostrou-se receptivo no período entre 12 e 14 h. Os insetos da ordem diptera foram os visitantes mais freqüentes nas flores estaminadas e pistiladas e as espécies Copestylum sp. e Erystalys sp., as responsáveis pela polinização.Information was obtained on the floral biology of Virola surinamensis (Rol. Warb. (Myristicaceae, a dioecious arboreal species of great importance for the Amazon region economy. The study was carried out in the floodplain area near the Murucutu stream, on the right side of the Guamá River, at the Universidade Federal Rural da Amazônia-UFRA, Belém-Pará , from January to December 2001. Floral biology was assessed from

  18. Rol de las instituciones en el perfil emprendedor

    OpenAIRE

    Buitrago, Angelica

    2016-01-01

    En este documento se encontrarán los resultados de una revisión literaria realizada a una variedad de artículos que en conjunto permiten reconocer las temáticas principales que influyen en la creación de empresa. Lo anterior, con el fin de conocer el rol que tienen las instituciones educativas en la formación de estudiantes emprendedores.

  19. Observadores: un rol determinante en el acoso escolar

    Directory of Open Access Journals (Sweden)

    María Clara Cuevas

    2016-01-01

    Full Text Available Objetivo. Examinar el rol de los observadores en el acoso escolar (AE, dada la escasez de estudios realizados que ilustren de manera específica su relevancia dentro del fenómeno y las razones asociadas a la adopción de su rol. Método. Se examinan estudios y teorías relevantes en la materia que contribuyen con datos sobre prevalencia, comportamientos asociados, cogniciones, emociones y otros elementos claves que permiten visualizar áreas en las cuales se deben focalizar las intervenciones para prevenir e intervenir en el AE, con énfasis en el rol de los participantes. Se revisaron las bases de datos electrónicas ProQuest Psychology Journals, PsycINFO, PSICODOC, PsycARTICLES, Psychology and Behavioral Sciences Collection; además se utilizaron como palabras clave bystanders, bullying, group process, por separado, sin restricción de campo, sin límite temporal, en los idiomas inglés y español. También, se consultaron portales de internet especializados en el tema como PrevNet, Organización Mundial de la Salud (OMS, Kivaprogram.net, Anti-bullying Alliance y Stopbullying.gov. Resultados. Se identificaron y describieron diversos niveles de abordaje del fenómeno, definición, prevalencia, características y algunas explicaciones sobre su causalidad Conclusión. El rol de observadores, participantes mayoritarios del AE, cobra especial relevancia en quienes con sus comportamientos instigan, alientan, apoyan y contribuyen con actos intimidatorios o, en su defecto, realizan acciones para detenerlos.

  20. Influencia en la salud del rol de género

    Directory of Open Access Journals (Sweden)

    Wilfredo Guibert Reyes

    1999-02-01

    Full Text Available Se realizó un estudio descriptivo retrospectivo para determinar las diferencias de género en cuanto a características biosociales, roles productivo, reproductivo, comunitario y aspectos que afectan la salud. La muestra fue de 150 hombres y 150 mujeres, con relación matrimonial entre sí, a los cuales se les aplicó una encuesta. Los principales resultados arrojaron que el 39,3 % de las mujeres estaban sin ocupación laboral, los hombres tenían mayor ingreso salarial, satisfacción laboral, posibilidades de superación; las mujeres ejecutaban generalmente las labores domésticas y la planificación de la economía familiar, así como participaban en mayor medida que los hombres en actividades religiosas, y eran víctimas de maltratos físicos, psicológicos o sexuales más frecuentemente. Se concluyó que en el rol reproductivo hubo iniquidad de género desfavorable al sexo femenino, en el rol productivo hubo iniquidad de género favorable a los masculinos, en el rol de gestión comunitario hubo predominio de equidad genérica y la mujer tuvo un número mayor de variables que afectan su saludA descriptive and retrospective study was conducted to determine the gender differences concerning the biosocial characteristics, the community, productive and reproductive roles, and those aspects affecting health. The sample was composed of 150 men and 150 women, who were married among themselves. All of them were surveyed and according to the results 39.3 % of the women were not working, whereas men had higher salaries, felt satisfied with their jobs, and had more possibilities of improving their educational level. Generally, women did the housework, were in charge of family planning, and took part in religious activities more frequently. Women were also victims of physical, psychological and sexual mistreatment. It was concluded that in the reproductive and productive roles there was inequity of gender in favor of men. As regards community management

  1. Field and numerical descriptions of fracture geometries and terminations in chalk containing chert layers and inclusions; implications for groundwater flow in Danish chalk aquifers

    Science.gov (United States)

    Seyum, S.

    2017-12-01

    This study is a description of the fracture distribution in laterally discontinuous chalk and chert layers, with an investigation on how fracture lengths and apertures vary as a function of applied stresses, material properties, and interface properties. Natural fractures intersect laterally extensive, discontinuous, chalk-chert material interfaces in 62 million-year old to 72 million-year old Chalk Group formations exposed at Stevns Klint, Denmark. Approximately one-third of Denmark's fresh water use is from chalk and limestone regional aquifers of the Chalk Group formations, where rock permeability is dominantly a function of open fracture connectivities. Fractured, centimeter- to decimeter-thick chert layers and inclusions (101 GPa elastic stiffness) are interlayered with fractured, meter-thick chalk layers (100 GPa elastic stiffness). Fractures are observed to terminate against and cross chalk-chert interfaces, affecting the vertical flow of water and pollutants between aquifers. The discontinuous and variably thin nature of chert layers at Stevns Klint effectively merges adjacent fracture-confining layers of chalk along discrete position intervals, resulting in lateral variability of fracture spacing. Finite element numerical models are designed to describe fracture interactions with stiff, chert inclusions of various shapes, thicknesses, widths, orientations, and interface friction and fracture toughness values. The models are two-dimensional with isotropic, continuous material in plane strain and uniformly applied remote principal stresses. These characteristics are chosen based on interpretations of the petrophysics of chalk and chert, the burial history of the rock, and the scale of investigation near fracture tips relative to grain sizes. The result are value ranges for relative stiffness contrasts, applied stresses, and material interface conditions that would cause fractures to cross, terminate at, or form along chalk-chert interfaces, with emphasis on

  2. Variable-density groundwater flow simulations and particle tracking. Numerical modelling using DarcyTools. Preliminary site description of the Simpevarp area, version 1.1

    Energy Technology Data Exchange (ETDEWEB)

    Follin, Sven [SF GeoLogic AB, Stockholm (Sweden); Stigsson, Martin; Berglund, Sten [Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden); Svensson, Urban [Computer-aided Fluid Engineering AB, Norrkoeping (Sweden)

    2004-12-01

    SKB is conducting site investigations for a high-level nuclear waste repository in fractured crystalline rocks at two coastal areas in Sweden, Forsmark and Simpevarp. The investigations started in 2002 and have been planned since the late 1990s. The work presented here investigates the possibility of using hydrogeochemical measurements in deep boreholes to reduce parameter uncertainty in a regional modelling of groundwater flow in fractured rock. The work was conducted with the aim of improving the palaeohydrogeological understanding of the Simpevarp area and to give recommendations to the preparations of the next version of the Preliminary Site Description (1.2). The study is based on a large number of numerical simulations of transient variable density groundwater flow through a strongly heterogeneous and anisotropic medium. The simulations were conducted with the computer code DarcyTools, the development of which has been funded by SKB. DarcyTools is a flexible porous media code specifically designed to treat groundwater flow and salt transport in sparsely fractured crystalline rock and it is noted that some of the features presented in this report are still under development or subjected to testing and verification. The simulations reveal the sensitivity of the results to different hydrogeological modelling assumptions, e.g. the sensitivity to the initial groundwater conditions at 10,000 BC, the size of the model domain and boundary conditions, and the hydraulic properties of deterministically and stochastically modelled deformation zones. The outcome of these simulations was compared with measured salinities and calculated relative proportions of different water types (mixing proportions) from measurements in two deep core drilled boreholes in the Laxemar subarea. In addition to the flow simulations, the statistics of flow related transport parameters were calculated for particle flowpaths from repository depth to ground surface for two subareas within the

  3. Viscoelastic material inversion using Sierra-SD and ROL

    Energy Technology Data Exchange (ETDEWEB)

    Walsh, Timothy [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Aquino, Wilkins [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Ridzal, Denis [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Kouri, Drew Philip [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); van Bloemen Waanders, Bart Gustaaf [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Urbina, Angel [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2014-11-01

    In this report we derive frequency-domain methods for inverse characterization of the constitutive parameters of viscoelastic materials. The inverse problem is cast in a PDE-constrained optimization framework with efficient computation of gradients and Hessian vector products through matrix free operations. The abstract optimization operators for first and second derivatives are derived from first principles. Various methods from the Rapid Optimization Library (ROL) are tested on the viscoelastic inversion problem. The methods described herein are applied to compute the viscoelastic bulk and shear moduli of a foam block model, which was recently used in experimental testing for viscoelastic property characterization.

  4. El rol de los gobernadores opositores en las elecciones presidenciales

    OpenAIRE

    Joel Sebastián Schneider

    2004-01-01

    Este trabajo efectúa un análisis de la forma en que los partidos de oposición actúan en las elecciones presidenciales, buscando darles un rol activo. Para ello se construye un modelo con dos niveles de gobierno, uno Nacional y el otro provincial o estadual. Estados Unidos, Argentina, Brasil y México, republicas presidencialistas federales, serán sometidas a un relevamiento empírico, que permitirá confirmar la hipótesis de que es más probable que cuando la oposición obtenga la presidencia, es ...

  5. Las solteras y el incumplimiento del rol matrimonial

    OpenAIRE

    Vallejo P., Elvira

    2001-01-01

    El tema sobre las mujeres solteras y el incumplimiento del rol matrimonial se aborda por el interés personal de trabajar con mujeres y sobre todo con mujeres solas, en búsqueda de una respuesta a esta interrogante ¿Dónde aprendimos que la maternidad dentro del matrimonio es el único destino de la mujer? ¿En qué momento perdimos nuestra identidad para someternos a la cultura u convertirnos en seres humanos dependientes de los hombres? . El análisis viene hecho desde varios escenarios que r...

  6. [THE REVISTA ROL CONTRIBUTION TO THE DEVELOPMENT OF SPANISH NURSING].

    Science.gov (United States)

    Mario, Flores; Prieto; Alexandra, Gualdron; Romero; Maria; Luz, Fernandez; Fernandez

    2015-09-01

    In 1978, a year after the integration of nursing studies at the university, was born the first Spanish journal of nursing: ROL de Enfermería. From then until now, this scientific publication has made history with the nursing profession. Through this work we have analyzed, by a bibliographical review, the scientific production of this tour between 1978 and December 2014. The number of published articles has been 4651, of which more than half have tried topics about nursing as a profession and problems of collaboration.

  7. Human Papillomavirus ve Oral ve Orofarinjeal Karsinomadaki Rolü

    OpenAIRE

    Buch, Sajad; Babu, Subhas; Castelino, Renita; Rao, Shruthi; Rao, Kumuda; Kamath, Jasmine

    2017-01-01

    İnsan papilloma virüsü (HPV), Papillomaviridae ailesine dahil olan, çift sarmal DNA virüsleri grubundan oluşmaktadır. HPV, skuamöz epitel için afinite gösterir ve cildi veya mukozayı enfekte edebilir. HPV'nin mukozal enfeksiyonu, inokülasyon yaptığı bölgelere göre, anogenital sistem, üretra, deri, larenks, trakeobronşiyal ve oral mukozada ortaya çıkabilir. HPV’nin oral skuamöz hücreli karsinomadaki yüksek frekansına bağlı olarak, bu hastalığın malign potansiyelinde rol oynadığı düşünülme...

  8. Rol de género y funcionamiento familiar

    Directory of Open Access Journals (Sweden)

    Patricia Herrera Santi

    2000-12-01

    Full Text Available En este trabajo se realiza un breve bosquejo del surgimiento y significación del rol de género y se relaciona con algunos de los indicadores de funcionamiento familiar, analizando en qué medida puede afectar la expresión favorable del mismo, alterar la dinámica interna de las relaciones familiares y actuar como factor patógeno en la salud familiarA brief sketch of the appearance and significance of the gender role is made in this paper. It is also related to some indicators of family functioning and it is analyzed to what extent this relationship may affect its favorable expression, alter the internal dynamics of the family relations and act as a pathogenic factor in family health

  9. Die hoogs-onversadigde vetsure: fisiologiese rol en kliniese moontlikhede

    Directory of Open Access Journals (Sweden)

    M. Haag

    2006-09-01

    Full Text Available Vetsure speel ’n uiters belangrike rol in die fisiologie van die mens. Afgesien daarvan dat vetsure in gestoorde trigliseriede gebruik word vir energieverskaffing, word vetsure vanaf dieetlipiede in plasma vervoer en ingebou in verskeie sellulêre strukture. Die vetsuurprofiel van selmembraanfosfolipiede is bepalend by die funksie van die selmembraan daarin dat dit vloeibaarheid, reseptorfunksie en ook die tipe eikosanoïede wat daaruit gesintetiseer kan word, beïnvloed. Vetsure lewer verder ook hoogs gedifferensieerde insette in sellulêre seintransduksieprosesse en regulering van geentranskripsie. Die steriese konformasie van vetsure speel ’n groot rol hierin: die reguitketting versadigde en trans-vetsure, in vergelyking met die onversadigde vetsure met progressief meer geboë kettings, lei tot ’n verskeidenheid meganismes wat minder positiewe effekte vir ons gesondheid inhou. Die twee belangrikste families van die poli-onversadigde vetsure, naamlik die omega-3 en omega-6 vetsuurgroepe, lei ook tot verskillende effekte in dié verband. Veranderings in die patroon van dieetvetsuurinname deur die eeue het gelei tot ’n verhoogde inname van versadigde, trans- en omega-6 vetsure, relatief tot omega-3 vetsure. Kliniese proewe het in die afgelope twintig jaar bewys dat dieetaanvulling met omega-3 vetsure tot verbetering in die simptome van ’n hele aantal toestande wat as leefstylgebonde beskou word, kan lei. Aterosklerose, vetsug, diabetes mellitus tipe 2, depressie, skisofrenie, Alzheimer-siekte, aandagtekorthiperaktiwiteitsversteuring in jong kinders, sekere tipes kanker, osteoporose in bejaardes en sekere dermatologiese siektes tel onder die versteurings wat op dié manier aangespreek kan word.

  10. Rol de género, concepto de ciencia y autoconcepto en adolescentes en Chile

    OpenAIRE

    Ríos García, Noemí Nehiel; Nuño Angos, Teresa; Pérez de Eulate González, Lourdes

    2011-01-01

    Existen muchas investigaciones respecto a las diferencias entre mujeres y varones respecto al concepto de ciencia y tecnología, pero muy pocas respecto a si existen o no diferencias desde las tipologías del rol de género que asume cada individuo. Por ello, quisimos explorar y conocer qué diferencias existen en las y los adolescentes en función de su rol de género respecto a su concepción de ciencia y qué autoconcepto tienen en cada una de las categorías de rol de género. Participaron en este ...

  11. Identification de deux phytostérols biologiquement actifs de l'extrait ...

    African Journals Online (AJOL)

    Pour A5.2 dérivatisée, un composé présente un spectre de masse de pic moléculaire à m/z 486 et des pics fragments [M-90]+, [M-129]+ et [M-357]+ propres au β-sitostérol triméthylsilyl éther dérivé du β- sitostérol. La présence de ces deux phytostérols bioactifs serait un atout majeur dans l'usage thérapeutique de cette ...

  12. El rol del profesorado en las aulas organizadas en aprendizaje cooperativo

    OpenAIRE

    Duran, David,

    2017-01-01

    El aprendizaje cooperativo requiere un nuevo rol docente, tanto en la preparación como en el desarrollo de la clase. Un rol distinto del transmisivo, pero no secundario. El artículo se centra en el docente, mientras los alumnos y las alumnas cooperan, mostrando la importancia del rol transformativo, que permite actuaciones difíciles de desarrollar en la enseñanza transmisiva, y sus repercusiones en el aprendizaje, la autonomía y el bienestar docente.

  13. The Agrobacterium rhizogenes oncogenes rolB and ORF13 increase formation of generative shoots and induce dwarfism in Arabidopsis thaliana (L.) Heynh.

    Science.gov (United States)

    Kodahl, Nete; Müller, Renate; Lütken, Henrik

    2016-11-01

    Plant transformation with the wild type Ri plasmid T-DNA of Agrobacterium rhizogenes is a promising method for breeding of compact plants and has been the subject of numerous studies. However, knowledge concerning the isolated functions of single genes and ORFs from the plasmid is limited. The rolB and ORF13 oncogenes of A. rhizogenes show considerable promise in plant breeding, but have not been comprehensively studied. Detailed information regarding the morphological impact of specific genes of the Ri plasmid will allow for optimized targeted breeding of plants transformed with the wild type Ri plasmid T-DNA. rolB and ORF13 were recombined into the genome of Arabidopsis thaliana using Gateway ® cloning and the effect on plant growth was assessed biometrically throughout the plants' life cycle. rolB-lines exhibited dwarfing, early necrosis of rosette leaves, altered leaf and flower morphology, and developed an increased number of inflorescences per rosette area compared to the wild type. ORF13-lines were extremely dwarfed, attaining only ca. 1% of the rosette area of the wild type, leaf and flower size was reduced, and the shape modified. The study documents that the traits inferred by the rolB oncogene yield plants with increased formation of generative shoots, but also result in some degree of premature senescence of vegetative organs. The extreme dwarfism seen in ORF13-lines indicate that this oncogene may be more important in the dwarfing response of plants transformed with the wild type Ri plasmid T-DNA than previously assumed and that transformation with this oncogene induces a very compact phenotype. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  14. A brief description of a new numerical framework for solving conservation laws: The method of space-time conservation element and solution element

    Science.gov (United States)

    Chang, Sin-Chung; To, Wai-Ming

    1992-01-01

    A new numerical method for solving conservation laws is being developed. It differs substantially from the well established methods, i.e., finite difference, finite volume, finite element, and spectral methods, in both concept and methodology. It is much simpler than a typical high resolution method. No flux limiter or any technique related to characteristics is involved. No artificial viscosity or smoothing is introduced, and no moving mesh is used. Yet this method is capable of generating highly accurate shock tube solutions. The slight numerical overshoot and/or oscillations generated can be removed if a simple averaging formula initially used is replaced by a weighted formula. This modification has little effect on other parts of the solution. Because of its simplicity, generalization of this new method for multi-dimensional problems is straightforward.

  15. Cholestérol alimentaire et morbi/mortalité cardiovasculaire

    Directory of Open Access Journals (Sweden)

    Hansel Boris

    2015-03-01

    Full Text Available Si l’hypercholestérolémie est un facteur de risque avéré des maladies cardiovasculaires, le rôle du cholestérol alimentaire dans la survenue de ces maladies reste discuté. À l’origine, les travaux d’Anitshkow chez le lapin ont montré qu’une alimentation riche en cholestérol se traduit par le développement de plaques d’athérome. Les études d’intervention chez l’homme ont examiné l’effet du cholestérol alimentaire et/ou des œufs sur les lipides plasmatiques, aboutissant à des résultats contradictoires. Elles ont également fait émerger la notion complexe d’hypo- et d’hyper-répondeur au cholestérol. L’épidémiologie observationnelle ne permet pas non plus de conclure à un effet délétère du cholestérol alimentaire chez l’homme. Néanmoins, chez les sujets diabétiques, une association positive entre la consommation et l’incidence des événements cardiovasculaires est retrouvée assez constamment, sans que l’on puisse l’expliquer de manière convaincante. Il n’existe pas d’essai clinique examinant l’impact des aliments riches en cholestérol sur la survenue des événements cardiovasculaires. Toutefois, les résultats des études MRFIT et PREDIMED ne vont pas dans le sens d’un effet délétère du cholestérol alimentaire. À l’inverse, les travaux réalisés sur le transporteur intestinal du cholestérol NPC1L1 sont en faveur de l’intérêt d’inhiber l’absorption du cholestérol pour réduire l’incidence des maladies cardiovasculaires. L’ensemble des données disponibles n’est pas en faveur d’un rôle clé du cholestérol alimentaire dans la survenue des maladies cardiovasculaires. Elles ne permettent donc pas d’en faire une cible prioritaire du régime à proposer pour prévenir les maladies cardiovasculaires.

  16. A Novel Numerical Model For Channel-Flow Combustion Using An Elliptic Description For The Solid And A Parabolic For The Gas

    Energy Technology Data Exchange (ETDEWEB)

    Mantzaras, I.; Schneider, A.

    2005-03-01

    A novel numerical tool is developed for the efficient computation of reacting channel flows. An elliptic iterative solver for the solid phase is coupled to a parabolic marching solver for the gas phase. Over the domain of applicability of the parabolic approach, an order of magnitude gain in computational time is achieved. Application of the model to the combustion of CH{sub 4}/O{sub 2} mixtures diluted with H{sub 2}O and CO{sub 2} indicates that pure gas phase combustion in straight channels is unstable. (author)

  17. Differentiation of Arcobacter species by numerical analysis of AFLP profiles and description of a novel Arcobacter from pig abortions and turkey faeces

    DEFF Research Database (Denmark)

    On, Stephen L.W.; Harrington, C.S.; Atabay, H.I.

    2003-01-01

    , and a previously unclassified porcine abortion strain were studied. AFLP profiling was performed using a BglII-Csp6I-based protocol previously used to characterize Campylobacter species. Duplicate profiles of 20 isolates were 93.25% similar, indicating high reproducibility. Numerical analysis of all 72 strains...... of A. cryaerophilus were differentiated at the 39.5% similarity level. For strain typing, 62 distinct types were defined, with evidence of clonal lineages within A. butzleri, A. cryaerophilus and A. skirrowii. Conclusions: AFLP profiling is an effective means of determining taxonomic and strain...

  18. Rol del ortodoncista en ronquidos y apneas obstructivas

    Directory of Open Access Journals (Sweden)

    B. M. Ester Hidalgo, Dra.

    2013-05-01

    Full Text Available Desde la década de los 80, los odontólogos de las especialidades de Ortodoncia y Cirugía Maxilofacial, integrados a un equipo multidisciplinario, juegan un rol importante en la terapia del ronquido y del Síndrome Apnea-Hipoapnea Obstructiva del Sueño (SAHOS. Este artículo describe los Dispositivos de Avance Mandibular (DAM como tratamiento del SAHOS, las consideraciones anatómicas, estudios sobre su efectividad y control de su eficiencia. Se clasifican y detalla su mecanismo de acción, criterios de elección y sus efectos secundarios. Se presentan 2 casos clínicos que utilizaron un DAM de diseño nacional durante un mes, donde previo y posterior al uso de este aparato se midió el Índice Apnea e Hipoapnea, ronquidos y saturación de oxígeno con el Apnealink. Como resultado, se obtuvo una disminución en los valores de todos estos índices, calificando el tratamiento con DAM como exitoso en la terapia del SAHOS.

  19. Evaluating the Performance of the Mixture Model Coupled with High and Low Reynolds Turbulence Closures in the Numerical Description of Concentrated Solid-Liquid Flows of Settling Particles

    Directory of Open Access Journals (Sweden)

    R. Silva

    2015-12-01

    Full Text Available In this manuscript, Computational Fluid Dynamics (CFD studies applying the Mixture Model coupled with both a High Reynolds and a Low Reynolds k-ε turbulence closures, were used to describe experimental pressure gradients and particle concentration profiles from the literature, for concentrated solid-liquid flows of settling particles in a horizontal pipe above the critical deposition velocity. With this work a new Mixture Model formulation is presented, incorporating the Jones-Launder Low Reynolds k-ε turbulence closure, to overcome the excessive turbulence production observed in the numerical studies using the High Reynolds k-ε turbulence model. Additionally, this formulation provides a more accurate representation of the wall turbulence damping phenomena, observed in the experimental testing for the flow of higher particle concentrations suspensions and higher flow velocities. Knowledge on the conditions that cause turbulence attenuation on solid-liquid flows is still scarce in the literature and of considerable value for industrial applications.

  20. WEISTRABA - a code for the numerical analysis of Weibull stress parameters from ABAQUS finite element stress analysis. Procedural background and code description

    International Nuclear Information System (INIS)

    Riesch-Oppermann, H.; Brueckner-Foit, A.

    1998-08-01

    Numerical analysis are used within the framework of the local approach to determine the critical stress at cleavage fracture. A set of ABAQUS post-processing modules serving this purpose is described in this report. The modules are intended to perform several steps that are necessary to obtain the parameters of the Weibull distribution of the critical Weibull stress at cleavage fracture. The main steps are determination of the first principal stress envelope at the experimentally obtained load levels at fracture, calculation of the Weibull stresses at fracture and an iterative maximum likelihood procedure for the distribution parameters of the Weibull stress. Some remarks on limits/modifications of the model in case of other mechanisms are also included in the report. (orig.)

  1. The Standard for Clinicians’ Interview in Psychiatry (SCIP): A Clinician-administered Tool with Categorical, Dimensional, and Numeric Output—Conceptual Development, Design, and Description of the SCIP

    Science.gov (United States)

    Nasrallah, Henry; Muvvala, Srinivas; El-Missiry, Ahmed; Mansour, Hader; Hill, Cheryl; Elswick, Daniel; Price, Elizabeth C.

    2016-01-01

    Existing standardized diagnostic interviews (SDIs) were designed for researchers and produce mainly categorical diagnoses. There is an urgent need for a clinician-administered tool that produces dimensional measures, in addition to categorical diagnoses. The Standard for Clinicians’ Interview in Psychiatry (SCIP) is a method of assessment of psychopathology for adults. It is designed to be administered by clinicians and includes the SCIP manual and the SCIP interview. Clinicians use the SCIP questions and rate the responses according to the SCIP manual rules. Clinicians use the patient’s responses to questions, observe the patient’s behaviors and make the final rating of the various signs and symptoms assessed. The SCIP method of psychiatric assessment has three components: 1) the SCIP interview (dimensional) component, 2) the etiological component, and 3) the disorder classification component. The SCIP produces three main categories of clinical data: 1) a diagnostic classification of psychiatric disorders, 2) dimensional scores, and 3) numeric data. The SCIP provides diagnoses consistent with criteria from editions of the Diagnostic and Statistical Manual (DSM) and International Classification of Disease (ICD). The SCIP produces 18 dimensional measures for key psychiatric signs or symptoms: anxiety, posttraumatic stress, obsessions, compulsions, depression, mania, suicidality, suicidal behavior, delusions, hallucinations, agitation, disorganized behavior, negativity, catatonia, alcohol addiction, drug addiction, attention, and hyperactivity. The SCIP produces numeric severity data for use in either clinical care or research. The SCIP was shown to be a valid and reliable assessment tool, and the validity and reliability results were published in 2014 and 2015. The SCIP is compatible with personalized psychiatry research and is in line with the Research Domain Criteria framework. PMID:27800284

  2. Numerical studies on spatial variation of the in situ stress field at Forsmark - a further step. Site descriptive modelling Forsmark - stage 2.1

    Energy Technology Data Exchange (ETDEWEB)

    Hakami, Hossein [Itasca Geomekanik AB, Solna (Sweden)

    2006-12-15

    The present work is an investigation into the depiction of a spatial distribution of the in situ stresses at the Forsmark candidate site. The methodology is based on numerical simulations of the pre-occurrences of perturbation of the stress field, produced by the deformations/displacements that rock mass/major fracture zones undergo. The distinct element program DEC, was used for the purpose. Forsmark area is dominated mainly by the Forsmark and the Singoe faults but also by a number of major fracture zones. Almost all these structures, not only that they are reported to dip vertically, but they more or less run sub-parallel with the inferred overall orientation of the major principal stress, s1. These zones, as a result, cause a fairly limited perturbation in the state of in situ stress at the site. At a diminished scale, however, fracture zones of a lesser extent - which dip obliquely and run at an angle in relation to the s1 orientation - produce a significant perturbation of the state of stress. This work also included two preliminary investigations on: - Assessing the remote orientation of the major principal stress. This was done by looking at the crustal shortening, which characterizes in part the past tectonic activities of the Fennoscandian shield. - Looking for the mechanically viable explanations for the formation of joints sub-parallel with ground surface within the uppermost section of the rock mass.

  3. Introduction of ROL genes in Rosa Hybrida L. for improved rootstock performance

    Energy Technology Data Exchange (ETDEWEB)

    Van der Salm, T.P.M.

    1996-06-04

    We aim to improve the performance of combination plants of rose by genetic modification of its root stock, with special reference to their performance at low energy conditions. The first objective of this research was the introduction of the ROL genes from A. rhizogenes in the recalcitrant species rose. For this purpose the rose root stock `Money way` was used. The second objective was to determine the effects of these genes on the rooting characteristics of root stock plants and their influence on the growth performance of combination plants. Special attention had to be paid to methodological aspects such as micropropagation, transformation and regeneration. First, the medium composition was optimized for the in vitro culture of root stock `Money way`. The effect of ROL genes on the formation of adventitious roots was described. It was shown that the formation of kanamycin resistant roots was stimulated by ROL genes, especially by a combination of ROLA, B and C. A regeneration method was developed, in which shoots were regenerated from excised roots via somatic embryogenesis. This regeneration method was applied for the regeneration of transformed shoots from kanamycin resistant roots, especially from those with the ROLB gene or a combination of ROLA, B and C genes. As a result several transformed plants were obtained. Expression patterns of the ROL genes were correlated with the phenotypical characteristics of the transformed rose plants. In order to determine the effect of ROL genes on the growth and development of a scion, combination plants were made, consisting of the root system of a transgenic root stock and the aerial parts of the cultivar `Madelon`. For evaluation of the effects of ROL genes on root stock performance and energy efficiency, the combination plants were studied under climate room conditions at 15 and 20 deg C. Finally, an overview is given of the possible applications of ROL genes for crop improvement.

  4. Phytostérols : un point sur les recommandations de l’ANSES

    Directory of Open Access Journals (Sweden)

    Fumeron Frédéric

    2015-03-01

    Full Text Available Récemment, l’ANSES a rendu un avis prudent sur la consommation des phytostérols/stanols dans le but de réduire le risque cardiovasculaire. Parmi les principales raisons justifiant la prudence de l’ANSES figurent notamment, d’une part la variabilité inter-individuelle de la réponse à la consommation de phytostérols/stanols, et, d’autre part, les relations entre phytostérolémie plasmatique et risque cardiovasculaire. Ces deux points font l’objet de la présente revue. Il existe une variabilité de la réponse individuelle à l’apport de stérols/stanols végétaux, avec une absence de réponse (baisse LDLC chez 20 à 42 % des sujets. Parmi les sujets non-répondeurs, certains augmentent le LDLC. La diminution du cholestérol LDLC est proportionnelle à sa concentration initiale en valeur absolue, et constante en pourcentage. La réponse est corrélée négativement au taux de synthèse du cholestérol et positivement au niveau d’absorption. L’effet des facteurs génétiques sur la réponse reste encore à démontrer. Il existe un manque de puissance statistique générale dans toutes les études génétiques publiées à ce jour. Concernant la relation entre phytostérolémie et le risque cardiovasculaire, de nombreux résultats contradictoires ont été publiés. Une méta-analyse montre globalement une absence de relation, mais l’hétérogénéité significative entre ces études ne permet pas de conclure. D’autre part, des études génétiques montrent que les variants qui augmentent la phytostérolémie sont associés à une augmentation du risque. La phytostérolémie est liée à l’absorption du cholestérol. L’absorption pourrait être le facteur causal de la relation entre phytostérolémie et risque cardiovasculaire, mais il n’est pas exclu que les phytostérols circulants aient aussi un effet délétère. L’ANSES estime que des études cliniques sont nécessaires pour conclure sur l

  5. Re-Pensando las complejidades del rol profesional desde la teoría de Bourdieu Re-thinking the complexities of the professional role from Bourdieu's theory

    Directory of Open Access Journals (Sweden)

    Sagrario Acebedo-Urdiales

    2011-06-01

    Full Text Available Este artículo tiene como objetivo realizar una apreciación crítica desde perspectivas teóricas y prácticas a cerca del rol profesional, en un esfuerzo por superar el lenguaje y la práctica dominante. Resaltamos la necesidad de trabajar más allá de las descripciones de tareas autónomas y tareas de colaboración, y mostrar formas que sitúen nuestras prácticas en una cultura de compromiso para promover la creación de contextos que tienen el potencial de ofrecer conocimiento y reconocimiento de cuidados intencionales. Realizaremos el análisis de rol profesional desde la teoría de la práctica de Bourdieu, intentando que ésta nos ayude a clarificar nuestro rol y sobre todo para replantear estructuras y modificar disposiciones, deteniéndonos especialmente en el concepto de habitus y capital simbólico.The objective of this article is to do a critical appreciation from the theoretical and practical perspectives of the professional role, in an effort to exceed the language and the dominant practice. We highlight the necessity of working beyond the descriptions of autonomous tasks and tasks of collaboration, and showing forms which situate our practices in a culture of compromise to promote the creation of contexts which have the potential to offer knowledge and recognition of intentional caring. We analyse the professional role from the theory of the Bourdieu practice, trying to clarify our role with the help of this practice and mainly to redefine structures and modify dispositions, paying special attention to the concept of habitus and symbolic capital.

  6. Rol del estado en los ensayos clínicos

    Directory of Open Access Journals (Sweden)

    Pilar Mazzetti

    2012-12-01

    Full Text Available La regulación de los ensayos clínicos por el Estado es un proceso en constante cambio y adecuación, cuyo reto actual consiste en salvaguardar la seguridad de los participantes y equilibrar la carga administrativa. El desarrollo y la regulación de los ensayos clínicos en los distintos países varían según la realidad, el contexto, su ejecución nacional o multinacional, condicionando que la regulación puramente nacional resulte insuficiente y se precise conocer parte de la regulación internacional. El objetivo de esta publicación es mostrar una visión global del rol de Estado en la regulación de los ensayos clínicos en distintas realidades. Para ello, se ha realizado una revisión de la regulación en la Unión Europea, Estados Unidos de Norteamérica y algunos países de Latinoamérica, para llegar finalmente al Perú. La tendencia actual en la regulación de los ensayos clínicos, se caracteriza por el incremento en los estándares de calidad, el garantizar la seguridad de los participantes, promover la transparencia, la disminución de los procesos burocráticos y el fortalecimiento de los comités de ética, en el marco de procesos democráticos abiertos, que convoquen e integren a todos los interesados en procesos dinámicos basados en el conocimiento actual y los cambios que se suceden. El reto actual es promover el desarrollo de ensayos clínicos desde el Estado (universidades, centros de investigación, institutos especializados, hospitales, etc. para los aspectos que el país necesita, incluidos medicamentos huérfanos, enfermedades prevalentes y abandonadas, y el uso terapéutico de los principios activos originarios.

  7. Rol del estado en los ensayos clínicos

    Directory of Open Access Journals (Sweden)

    Pilar Mazzetti

    Full Text Available La regulación de los ensayos clínicos por el Estado es un proceso en constante cambio y adecuación, cuyo reto actual consiste en salvaguardar la seguridad de los participantes y equilibrar la carga administrativa. El desarrollo y la regulación de los ensayos clínicos en los distintos países varían según la realidad, el contexto, su ejecución nacional o multinacional, condicionando que la regulación puramente nacional resulte insuficiente y se precise conocer parte de la regulación internacional. El objetivo de esta publicación es mostrar una visión global del rol de Estado en la regulación de los ensayos clínicos en distintas realidades. Para ello, se ha realizado una revisión de la regulación en la Unión Europea, Estados Unidos de Norteamérica y algunos países de Latinoamérica, para llegar finalmente al Perú. La tendencia actual en la regulación de los ensayos clínicos, se caracteriza por el incremento en los estándares de calidad, el garantizar la seguridad de los participantes, promover la transparencia, la disminución de los procesos burocráticos y el fortalecimiento de los comités de ética, en el marco de procesos democráticos abiertos, que convoquen e integren a todos los interesados en procesos dinámicos basados en el conocimiento actual y los cambios que se suceden. El reto actual es promover el desarrollo de ensayos clínicos desde el Estado (universidades, centros de investigación, institutos especializados, hospitales, etc. para los aspectos que el país necesita, incluidos medicamentos huérfanos, enfermedades prevalentes y abandonadas, y el uso terapéutico de los principios activos originarios.

  8. [EVOLUTION OF REVISTA ROL DE ENFERMERÍA (1978-2008): A BIBLIOGRAPHIC ANALYSIS].

    Science.gov (United States)

    Duerto Alvarez, Clara; Miqueo, Consuelo

    2015-10-01

    Revista ROL de Enfermería was the first journal of nurses and adressed to nursing published with the birth of Spanish democracy, indexed soon Medline/PubMed. This paper analyzes the changes in the structure and function of the magazine. Highlights two facts. The journal ROL expresses the transformation of the new universitary nursing, and how was adapting to scientific standards: although not increased the number of original articles, was normalizing their structure, bibliography or citations pattern, and also the scientific writing style.

  9. Consecuencias del estrés de rol Consequences of role stress

    Directory of Open Access Journals (Sweden)

    Fernando Mansilla Izquierdo

    2011-12-01

    Full Text Available El estrés de rol es específicamente el que se origina por el desempeño de roles en la organización, y comprende tanto la ambigüedad de rol como el conflicto de rol. Objetivo: Evaluar la ambigüedad y el conflicto de rol de un grupo de profesionales que realizan diferentes puestos de trabajo, y su influencia sobre sus niveles de bienestar físico y psicológico. Material y método: Para evaluar los estresores de rol (Ambigüedad de Rol y Conflicto de Rol se ha utilizado el Cuestionario de Rizzo, House y Lirtzman. Y para establecer las consecuencias el Cuestionario de Síntomas SLC-90-R. Resultados: El 20% de la muestra percibía ambigüedad y conflicto de rol en su trabajo. Y formaron el grupo que puntuó alto en ambigüedad y conflicto de rol puntuó asimismo alto en todas las subescalas: Somatización, de Obsesión-Compulsión, de Sensibilidad Interpersonal, Depresión, Ansiedad, Hostilidad, Ansiedad Fóbica, Ideación Paranoide y de Psicoticismo. Además el Índice Global de Gravedad y el Total de Síntomas Positivos fueron significativamente superiores en el grupo que puntuó alto en ambigüedad de rol y conflicto de rol. Por otro lado, no se encuentran diferencias significativas entre los niveles de estudios ni en las subescalas ni en Índice General de Gravedad ni en el Total de Síntomas Positivos.The role stress is specifically the one that originates from the performance of roles in the company, and includes both role ambiguity and role conflict. Objetive: To evaluate the ambiguity and the role conflict of a group of professionals who carry out different jobs, and its influence on their physical and psychological well-being. Material and method: To evaluate the role stressors (Role Ambiguity and Role Conflict the Questionnaire of Rizzo, House and Lirtzman has been used and to establish the consequences the Questionnaire of Symptoms SLC-90-R. Results: 20 % of the sample percieved ambiguity and conflict of role in their job and had

  10. Production of artemisinin and its derivatives in hairy roots of Artemisia dubia induced by rolA gene transformation

    International Nuclear Information System (INIS)

    Amanullah, M.; Mirza, B.; Zia, M.

    2016-01-01

    Artemisinin and its derivatives are phytochemical constituents of genus Artemisia. Demand of these plant secondary metabolitesis increasing due to their immense therapeutic significance. Besides their established antimalarial role, recent studies have also disclosed their anticancer potentials. It has made imperative to develop new and efficient sources of these compounds. Inherent synthetic challenges give biological sources preference over chemical synthesis of artemisinin and its derivatives. Therefore, genetic improvement of plants and, rather less preferentially, microbes is focus of current research to gain increase productivity of these valuable drugs. This study has analyzed A. dubiaas potential source of artemisinin and its derivatives. Transformation of Artemisia dubia was carried out using A. tumefaciens strain LBA 4404 containing rolA gene constructed on pRB 29. Healthy and acclimatizable transgenic plants were produced using optimized concentrations of BAP and NAA. Previously acclimatized rol ABC transgenic plants were also In vitro regenerated for comparative analysis of artemisinin and its derivatives. PCR amplification of rolA gene was done to confirm the integration of T-DNA in transgenic plants.TLC analysis was performed to evaluate comparative production of artemisinin and derivatives in rolA and rol ABC transgenic A. dubia. It revealed that rolA transgenic plants contain comparable amounts of these metabolites. Both type of transgenic plants manifested the enhancement of other uncharacterized compounds as well. Besides systematic optimization of In vitro regenerative protocol for Artemisia dubia, relative regeneration ability of rol transgenic and controlplants was also assessed at four regenerative stages. It was observed that unlike control, rol transgenic plants showed best root induction only on combination of auxins and cytokines. It was concluded that rol genes transformation of plants is an efficient tool to enhance their secondary

  11. [The importance of a bibliographic analysis in the magazines published by Revista Rol de Enfermeria"].

    Science.gov (United States)

    Lorente Gallego, A M; Chaín-Navarro, C; Flores Martín, J A

    2007-06-01

    This article is a preview of a project whose objective is to carry out a bibliographical analysis of the articles bearing scientific information included in the "ROL de Enfermeria" magazine over the past five years. This magazine started publication in 1978 and has as its goal contributing to the spread of scientific knowledge in the Nursing field.

  12. It's kind of an exciting story: De rol van het Internet in de adolescente seksuele ontwikkeling

    NARCIS (Netherlands)

    Doornwaard, S.M.; van den Eijnden, R.J.J.M.; Vanwesenbeeck, W.M.A.; ter Bogt, T.F.M.

    2016-01-01

    In dit artikel worden de bevindingen van Project STARS Deelproject 3 beschreven, waarin de rol van Internet in de adolescente seksuele ontwikkeling is onderzocht. De verschillende empirische studies die zijn uitgevoerd hadden tot doel meer inzicht te bieden in (1) de prevalentie en ontwikkeling van

  13. Rol docente universitario y competencias profesionales en la Licenciatura en Psicología

    Directory of Open Access Journals (Sweden)

    Deisy Krzemien

    Full Text Available Esta investigación propone explorar y describir la definición y expectativa del rol docente universitario en alumnos de la Licenciatura en Psicología de la Universidad Nacional de Mar del Plata. Poco se conoce sobre la expectación acerca del rol docente que los alumnos construyen en sus experiencias educativas. A partir de la literatura científica y los datos recabados, se propone un modelo de competencias profesionales del profesor universitario, considerando cuatro aspectos: teórico-académico, técnico-pedagógico, actitudinal y ético-social. En una etapa de investigación exploratoria, se realizaron entrevistas focalizadas a informantes clave. En una etapa descriptiva, se administró un cuestionario para evaluar la expectativa del rol docente en una muestra de 200 estudiantes. Se realizó un análisis comparativo, cuali y cuantitativo de datos. Los resultados evidencian la necesidad de una redefinición del rol docente en el marco de la nueva agenda didáctica. La calidad de la docencia universitaria enfrenta la necesidad de profesionalizar e institucionalizar la formación pedagógica del profesorado de educación superior.

  14. Etude des phytostérols et des acides gras de pistachia atlantica ...

    African Journals Online (AJOL)

    AKA Boko

    insaturés et en phytostérols, teneurs comparables à celle de l'huile d'olive, qu'on commence à peine à entrevoir ses vertus thérapeutiques et nutritionnelles envers certaines pathologies. Mots-clés : Acides gras, Pistacia atlántica, Pistacia vera, ...

  15. De rol van sociale media bij rampen en (mini)crises

    NARCIS (Netherlands)

    Jan Eberg; Menno van Duin; Vina Wijkhuijs

    2016-01-01

    Full text beschikbaar met HU-account. Sinds de opkomst van sociale media spelen de toepassing en het bereik ervan in toenemende mate een rol, ook bij rampen en crises. De vraag rijst dan hoe daar in de crisiscommunicatie en het crisismanagement effectief mee om te gaan. Uit literatuuronderzoek en

  16. Genetic Transformation of Artemisia carvifolia Buch with rol Genes Enhances Artemisinin Accumulation.

    Directory of Open Access Journals (Sweden)

    Erum Dilshad

    Full Text Available The potent antimalarial drug artemisinin has a high cost, since its only viable source to date is Artemisia annua (0.01-0.8% DW. There is therefore an urgent need to design new strategies to increase its production or to find alternative sources. In the current study, Artemisia carvifolia Buch was selected with the aim of detecting artemisinin and then enhancing the production of the target compound and its derivatives. These metabolites were determined by LC-MS in the shoots of A. carvifolia wild type plants at the following concentrations: artemisinin (8μg/g, artesunate (2.24μg/g, dihydroartemisinin (13.6μg/g and artemether (12.8μg/g. Genetic transformation of A. carvifolia was carried out with Agrobacterium tumefaciens GV3101 harboring the rol B and rol C genes. Artemisinin content increased 3-7-fold in transgenics bearing the rol B gene, and 2.3-6-fold in those with the rol C gene. A similar pattern was observed for artemisinin analogues. The dynamics of artemisinin content in transgenics and wild type A.carvifolia was also correlated with the expression of genes involved in its biosynthesis. Real time qPCR analysis revealed the differential expression of genes involved in artemisinin biosynthesis, i.e. those encoding amorpha-4, 11 diene synthase (ADS, cytochrome P450 (CYP71AV1, and aldehyde dehydrogenase 1 (ALDH1, with a relatively higher transcript level found in transgenics than in the wild type plant. Also, the gene related to trichome development and sesquiterpenoid biosynthesis (TFAR1 showed an altered expression in the transgenics compared to wild type A.carvifolia, which was in accordance with the trichome density of the respective plants. The trichome index was significantly higher in the rol B and rol C gene-expressing transgenics with an increased production of artemisinin, thereby demonstrating that the rol genes are effective inducers of plant secondary metabolism.

  17. Agrobacterium rhizogenes rolB gene affects photosynthesis and chlorophyll content in transgenic tomato (Solanum lycopersicum L.) plants.

    Science.gov (United States)

    Bettini, Priscilla P; Marvasi, Massimiliano; Fani, Fabiola; Lazzara, Luigi; Cosi, Elena; Melani, Lorenzo; Mauro, Maria Luisa

    2016-10-01

    Insertion of Agrobacterium rhizogenes rolB gene into plant genome affects plant development, hormone balance and defence. However, beside the current research, the overall transcriptional response and gene expression of rolB as a modulator in plant is unknown. Transformed rolB tomato plant (Solanum lycopersicum L.) cultivar Tondino has been used to investigate the differential expression profile. Tomato is a well-known model organism both at the genetic and molecular level, and one of the most important commercial food crops in the world. Through the construction and characterization of a cDNA subtracted library, we have investigated the differential gene expression between transgenic clones of rolB and control tomato and have evaluated genes specifically transcribed in transgenic rolB plants. Among the selected genes, five genes encoding for chlorophyll a/b binding protein, carbonic anhydrase, cytochrome b 6 /f complex Fe-S subunit, potassium efflux antiporter 3, and chloroplast small heat-shock protein, all involved in chloroplast function, were identified. Measurement of photosynthesis efficiency by the level of three different photosynthetic parameters (F v /F m , rETR, NPQ) showed rolB significant increase in non-photochemical quenching and a, b chlorophyll content. Our results point to highlight the role of rolB on plant fitness by improving photosynthesis. Copyright © 2016 Elsevier GmbH. All rights reserved.

  18. Descriptive Research

    DEFF Research Database (Denmark)

    Wigram, Anthony Lewis

    2003-01-01

    Descriptive research is described by Lathom-Radocy and Radocy (1995) to include Survey research, ex post facto research, case studies and developmental studies. Descriptive research also includes a review of the literature in order to provide both quantitative and qualitative evidence of the effect...... starts will allow effect size calculations to be made in order to evaluate effect over time. Given the difficulties in undertaking controlled experimental studies in the creative arts therapies, descriptive research methods offer a way of quantifying effect through descriptive statistical analysis...

  19. Original Paper Performances comparées du HDL-cholestérol et du ...

    African Journals Online (AJOL)

    CT/HDL-C) et du HDL-Cholestérol est le meilleur prédicteur du SMet chez les adultes béninois. .... (Canada) et du. Ministère de la Santé du Bénin. Le consentement éclairé écrit a été obtenu de chaque participant avant leur recrutement dans.

  20. Surface characterization of activated chalcopyrite particles via the FLSmidth ROL process. Part 1: Electron microscope investigations

    DEFF Research Database (Denmark)

    Karcz, Adam Paul; Damø, Anne Juul; Illerup, Jytte Boll

    of copper(II) to dope the semiconductor lattice and thereby "activate" the chalcopyrite, thereby reducing leach times below 2 hours (>98% recovery). Because the activation plays a major role in accelerating the leaching step, it is critical to understand the nature of this intermediate and its part...... in the ROL process. The current work presents results from electron microscope investigations of surface-activated particles....

  1. Percepción del rol profesional de alumnos de enfermeria de la Universidad de Concepción, Chile Professional role perception in undergraduate nursing students from University of Concepcion, Chile

    Directory of Open Access Journals (Sweden)

    Patricia Jara Concha

    2005-09-01

    Full Text Available Estudio descriptivo exploratorio cuyo objetivo es describir la percepción de rol profesional que tienen los alumnos de enfermería de la Universidad de Concepción, Chile, en los diferentes niveles de formación, durante el año 2000. La muestra fue intencionada, 250 estudiantes agrupados en fracciones: A del primer año, B del tercer año y C del quinto año. Se aplicó un cuestionario elaborado por las autoras, basado en estudios previos de rol entre profesionales. La información se analiza descriptivamente para cada fracción por separado y luego se hace un análisis comparativo de las fracciones. Se utilizó análisis estadístico con Chi2 para las fracciones B y C. En relación con la imagen de rol, la mayoría percibe a la enfermera como coordinadora del trabajo en equipo y sólo un 18% como dadora del cuidado. En cuanto a la representación del concepto de rol planteado en situaciones de ejercicio profesional, mayoritariamente se identifican con el rol como cuidadora. En ambas, el análisis estadístico con Chi2 resultó no significativo. En los niveles B y C, se señala preferentemente el carácter expresivo del rol, encontrándose diferencias estadísticamente significativas. Se concluye que la percepción de rol que tienen los alum¬nos varía según el nivel de formación, y priman algunos factores educativos claves como los modelos de profesores y modelos enfermeras(os en campos clínicos.The aim of this descriptive exploratory research is to describe the professional role perception the undergraduate nursing students attending University of Concepción (CHILE have, in their different instructional levels, during academic year, 2000. An intentional sample, 250 students were chosen and grouped as follow; being A: First year, B: Third year, C: Fifth year. A questionnaire made up by the authors, based on previous role trials among professionals, was applied. The information was descriptively analyzed for each group (separately and a

  2. La incidencia del rol docente en el desarrollo del conocimiento metacomprensivo

    Directory of Open Access Journals (Sweden)

    Paula Ascorra

    2008-10-01

    Full Text Available El presente artículo expone un estudio exploratorio y preliminar que busca indagar la relación existente entre el rol docente -definido como un facilitador o mediador de aprendizaje de los alumnos- y la capacidad metacomprensiva lectora. La muestra estuvo compuesta por 106 sujetos quienes volcaron sus percepciones acerca del rol que cumplían sus docentes en el Inventario de Identificación de Conductas del Rol del profesor como Mediador de Aprendizaje (ICRM y su conocimiento metacomprensivo en el cuestionario MCL que mide tal variable. Los resultados muestran una relación entre el profesionalismo del docente y el desarrollo estratégico de los alumnos y entre afectividad y tarea grupal con la capacidad de comprender la tarea lectora, indicando que, más allá de esta instrucción directa, un profesor por el solo hecho de presentarse como mediador y de adoptar una conducta estratégica, ya favorece un incremento en el conocimiento metacomprensivo de sus alumnos.

  3. ROLE PLAYING GAMES IN THE CLASSROOM LOS JUEGOS DE ROL EN EL AULA

    Directory of Open Access Journals (Sweden)

    Mario Grande de Prado

    2010-11-01

    Full Text Available Research done on the field of role playing games and their influence on young people's minds produces possitive results, that is to say, they (such games are not dangerous. At the same time, the few articles about role playing games and education show some possitive references about their educational effects. However, role playing games, considered as games, seem not to be relevant as some kind of strategy at Secondary Education nowadays. This article sums up the existing contributions and gives some proposals about their possible implementation.Las investigaciones realizadas en el ámbito de los juegos de rol y su influencia sobre las mentes de los jóvenes arrojan resultados positivos, es decir, no son peligrosos. Al mismo tiempo, los escasos artículos sobre juegos de rol y educación muestran referencias positivas sobre sus efectos educativos. Sin embargo los juegos de rol como tales no parecen ser relevantes actualmente como estrategia en Educación Secundaria. El presente artículo hace un repaso de las aportaciones existentes y realiza algunas propuestas sobre su posible aplicación.

  4. Los actores de la violencia escolar y el rol que desempeñan

    Directory of Open Access Journals (Sweden)

    Laura Oliva Zárate

    2014-01-01

    Full Text Available La violencia es un fenómeno antiguo que se viene acrecentando y manifestando en distintos ámbitos sociales y afecta la vida de muchos niños y adolescentes. En México, se ha estudiado el tema en los centros de educación para iniciar acciones paliativas. En el presente estudio se elaboró y aplicó un software interactivo que aborda la violencia en estudiantes de secundaria y que permite, entre otros factores, identificar por sí mismo el rol que ocupa el adolescente respecto a la violencia: espectador, agresor o víctima. Participaron 25 alumnos de una secundaria oficial y el análisis cualitativo de los resultados se realizó mediante Atlas Ti; se revela el desconocimiento que los actores tienen con respecto al rol que despliegan ante la violencia dentro de la escuela, ya sea de quien la ejerce, de quien la recibe u observa. Los resultados arrojan un predominio del rol de espectador, con cifras de 52%, 32% como agresores, y 16% como víctimas. El software demuestra ser efectivo como una herramienta para el acercamiento del fenómeno de la violencia en adolescentes.

  5. Procedimientos interpretativos y reglas normativas en la negación del "status" y "rol"

    Directory of Open Access Journals (Sweden)

    AARON V. CICOUREL

    1982-01-01

    Full Text Available Se compara la teoria de las "condiciones mínimas para la comunicación" con el modelo dominante de normas sociales y de comportamiento para explicar la negociación social del estatus y el rol como aparecen representados en el modelo de investigación de actor y observador. Se critican las teorías existentes por utilizar la noción de "asunción de rol" sin explicar el reconocimiento del rol y el estatus por parte del actor; y por fallar al explicar el proceso por el que se perciben las normas. Los procedimientos interpretativos basados en la negociación de un consenso se usan para explicar el aprendizaje, uso y evolución de las normas. Se explican las condiciones para la comunicación siguiendo las nociones de Alfred Schutz de "uso de la lógica" y "lógica reconstruida": reciprocidad de la perspectiva, habilidad del investigador para extrapolar más allá del sentido literal de las palabras, las normas de comunicación. El fundamento epistemológico de la investigación sociológica consiste en la estabilidad de los procedimientos negociadores e interpretativos usados en culturas con distintas estructuras normativas.

  6. Numerical relativity

    CERN Document Server

    Shibata, Masaru

    2016-01-01

    This book is composed of two parts: First part describes basics in numerical relativity, that is, the formulations and methods for a solution of Einstein's equation and general relativistic matter field equations. This part will be helpful for beginners of numerical relativity who would like to understand the content of numerical relativity and its background. The second part focuses on the application of numerical relativity. A wide variety of scientific numerical results are introduced focusing in particular on the merger of binary neutron stars and black holes.

  7. Estereotipos de rol sexual y diferencias sexuales: realidad y distorsión

    Directory of Open Access Journals (Sweden)

    María Raguz de De Romaña

    1983-06-01

    Full Text Available Dado el interés del autor por investigar las relaciones existentes entre estereotipos de rol sexual y diferencias sexuales, se llevó a cabo dos estudios con jóvenes pre-universitarios y universitarios. En el primer estudio se realizó un análisis de juicios comparativos respectode 14 de los estereotipos de rol sexual del Bem Sex Role lnventory {BSRI, en base al cual se construyeron Escalas de Masculinidad y Femineidad. Ello permitió identificar no sólo qué estereotiposson considerados masculinos, femeninos o neutros en Lima, sino sus ponderaciones.En el segundo estudio se trabajó con universitarios, aplicándoles el BSRI {traducido libremente; mediante un análisis con el coeficiente decorrelación de Pearson y luego con análisis de varianza y estimación de omega cuadrado, se pudo determinar qué estereotipos se asociaban conel sexo masculino y cuáles con el sexo femenino, y cuánto la variable sexo explicaba los resultados. Así, se determinaba la fuerza de la asociación entre sexo y cada uno de los 60 estereotiposy era factible establecer diferencias entre los sexos. Finalmente, los hallazgos de ambas investigaciones fueron contrastados, comparandolos Estereotipos de Rol Sexual con las Diferencias Sexuales, lo que llevó a corroborar que si bien algunos estereotipos sexuales tienen apoyoempírico en diferencias reales entre los sexos, otros parecen derivarse de distorsiones cognitivas constituyendo "correlaciones ilusorias"

  8. Los actores de la violencia escolar y el rol que desempeñan

    OpenAIRE

    Laura Oliva Zárate; Miriam Magaly Calderón Vidal

    2014-01-01

    La violencia es un fenómeno antiguo que se viene acrecentando y manifestando en distintos ámbitos sociales y afecta la vida de muchos niños y adolescentes. En México, se ha estudiado el tema en los centros de educación para iniciar acciones paliativas. En el presente estudio se elaboró y aplicó un software interactivo que aborda la violencia en estudiantes de secundaria y que permite, entre otros factores, identificar por sí mismo el rol que ocupa el adolescente respecto a la violencia: espec...

  9. El rol de las emociones en la esfera pública

    OpenAIRE

    Baum, Erica

    2012-01-01

    ResumenComo seres humanos nos encontramos condicionados por nuestras emociones, solemos reaccionar ante distintas situaciones conflictivas con enojo, alegría o tristeza, entre otras. Un simple recuerdo puede: enturbiar nuestro momento actual con dolor o nostalgia o generarnos gratitud y felicidad. Las emociones, al dar cuenta de la vulnerabilidad que nos es inherente, desempeñan un rol significativo en la vida individual pero también en la moralidad social. Mi pregunta es: ¿deberían ser tenid...

  10. Desarrollo de la microbiota gastrointestinal en lactantes y su rol en salud y enfermedad

    OpenAIRE

    Carolina A. Serrano Honeyman; Miguel A. Leon Rios; Paul R Harris Diez

    2016-01-01

    Durante la última década, con la aparición de técnicas de secuenciación de última generación basadas en la filogenia del gen 16S rRNA y complejas plataformas bioinformáticas, la composición del microbioma y su rol en salud y enfermedad ha sido sujeto de investigación activa. Existe una creciente evidencia entre la disbiosis microbiana y un riesgo aumentado de desarrollar enfermedades de tipo inflamatorio, autoinmune, y metabólico tales como asma, diabetes, obesidad y enfermedades gastrointest...

  11. Exposition précoce au cholestérol et risque cardiovasculaire à l’âge adulte

    Directory of Open Access Journals (Sweden)

    Martin Jean-Charles

    2015-03-01

    Full Text Available Le lait maternel apporte au nourrisson l’équivalent de 5 à 10 fois la quantité de cholestérol de celle d’un adulte. En comparaison, les laits infantiles historiquement fabriqués à base de graisses laitières apportaient également du cholestérol au nourrisson mais en quantité moindre en raison d’une dilution avec les graisses végétales utilisées pour ajuster les apports. Ce contraste lait maternel/laits infantiles s’est encore creusé depuis une vingtaine d’années en raison d’un usage maintenant quasi-systématique des matières grasses végétales dans les formules commercialisées en Europe. Des études épidémiologiques suffisamment nombreuses comparant l’allaitement à l’alimentation aux formules soulignent un risque de maladie cardiovasculaire à l’âge adulte supérieur chez les enfants initialement alimentés aux formules. Des études animales, bien qu’incomplètes, suggèrent qu’il existe une programmation précoce du métabolisme du cholestérol liée à la nature des apports initiaux en ce stérol. Cette programmation est susceptible de retentir à long terme sur la cholestérolémie et le risque cardiovasculaire. Le point sur les données disponibles est livré dans cette revue, ainsi que les moyens possibles à mettre en œuvre pour répondre à la question de l’importance des apports en cholestérol en période néonatale.

  12. Numerical Development

    Science.gov (United States)

    Siegler, Robert S.; Braithwaite, David W.

    2016-01-01

    In this review, we attempt to integrate two crucial aspects of numerical development: learning the magnitudes of individual numbers and learning arithmetic. Numerical magnitude development involves gaining increasingly precise knowledge of increasing ranges and types of numbers: from non-symbolic to small symbolic numbers, from smaller to larger…

  13. Hindi Numerals.

    Science.gov (United States)

    Bright, William

    In most languages encountered by linguists, the numerals, considered as a paradigmatic set, constitute a morpho-syntactic problem of only moderate complexity. The Indo-Aryan language family of North India, however, presents a curious contrast. The relatively regular numeral system of Sanskrit, as it has developed historically into the modern…

  14. ADAPTECC : Un juego de Rol sobre la Adaptación al Cambio Climático

    OpenAIRE

    Lucas, Josu; Galarraga, Ibon; Escapa García, Marta

    2015-01-01

    El Juego de la Adaptación al Cambio Climático (ADAPTECC) es un juego de Rol diseñado para que los participantes experimenten las dificultades que surgen, tanto a nivel local como a nivel regional, cuando las autoridades correspondientes tienen que adoptar medidas de adaptación. La adaptación requiere anticipar los efectos adversos del Cambio Climático (CC) y tomar medidas para prevenir y minimizar el daño debido a los impactos del CC. Cada jugador se introduce en el rol de un alcalde o concej...

  15. FUENTES HISTÓRICAS DE LOS JUEGOS DE ROL: UN EXPERIMENTO PARA LA DIDÁCTICA DE LA HISTORIA ANTIGUA

    Directory of Open Access Journals (Sweden)

    Juan Ramón Carbó García

    2010-11-01

    Full Text Available En este estudio pretendemos resaltar la importancia de las fuentes históricas para la concepción y ambientación de los distintos juegos de rol y por consiguiente, también la utilidad de éstos para la didáctica de la Historia. Asimismo, planteamos los resultados de un experimento didáctico en el nivel universitario desarrollado con un juego de rol ambientado en la Edad Antigua y más precisamente en época del Imperio Romano.

  16. Numerical analysis

    CERN Document Server

    Rao, G Shanker

    2006-01-01

    About the Book: This book provides an introduction to Numerical Analysis for the students of Mathematics and Engineering. The book is designed in accordance with the common core syllabus of Numerical Analysis of Universities of Andhra Pradesh and also the syllabus prescribed in most of the Indian Universities. Salient features: Approximate and Numerical Solutions of Algebraic and Transcendental Equation Interpolation of Functions Numerical Differentiation and Integration and Numerical Solution of Ordinary Differential Equations The last three chapters deal with Curve Fitting, Eigen Values and Eigen Vectors of a Matrix and Regression Analysis. Each chapter is supplemented with a number of worked-out examples as well as number of problems to be solved by the students. This would help in the better understanding of the subject. Contents: Errors Solution of Algebraic and Transcendental Equations Finite Differences Interpolation with Equal Intervals Interpolation with Unequal Int...

  17. Opinión sobre el rol y perfil del educador para la primera infancia

    Directory of Open Access Journals (Sweden)

    Beatriz Elena Zapata

    2010-10-01

    Full Text Available En este artículo presentamos los resultados consolidados de la investigación desarrollada entre Chile y Colombia “Opinión que se tiene sobre el rol del profesional de la educación para la primera infancia en dos países latinoamericanos”, una descripción levantada desde las opiniones aportadas por comunidades diversas (directivos docentes, docentes, apoderados de la educación, familias , estudiantes y profesionales de otras áreas; estudio de carácter cualitativo explicativo en el cual participan 10 universidades, miembros de la Omep (Organización Mundial de Educación Preescolar. El estudio tuvo como propósito la caracterización del rol y perfil del educador para la primera infancia, el cual se realiza desde el enfoque de competencias y en el marco de las Políticas Públicas que a nivel de Latinoamérica se han gestado en las últimas décadas en torno a la atención integral y educación de los niños y niñas.

  18. El rol del professor en l’aprenentatge col·laboratiu mediat per ordinador

    Directory of Open Access Journals (Sweden)

    Ingrid Noguera-Fructuoso

    2009-10-01

    Full Text Available En aquest article es presenten els resultats d'una investigació sobre el canvi de rol que es produeix en el professorat en l'ús de les TIC com a eina per a l'aprenentatge col·laboratiu en educació primària i secundària. L'interès es focalitza en l'ús concret d'una eina dissenyada per a l'aprenentatge col·laboratiu, el BSCL, sota el model pedagògic de qüestionament progressiu. En primer lloc, es duu a terme una revisió teòrica. En segon lloc, s'exposen les preguntes d'investigació, la justificació d'aquesta, es descriu el disseny i l'enfocament metodològic escollit, l'estudi de casos. Els resultats obtinguts revelen que hi ha una tendència cap al canvi de rol en el professorat en l'ús del BSCL com a eina per a l'aprenentatge col·laboratiu així com l'eficàcia del model de qüestionament progressiu en la construcció de coneixement de l'alumnat.

  19. Opinión sobre el rol y perfil del educador para la primera infancia

    Directory of Open Access Journals (Sweden)

    Beatriz Elena Zapata

    2010-01-01

    Full Text Available En este artículo presentamos los resultados consolidados de la investigación desarrollada entre Chile y Colombia "Opinión que se tiene sobre el rol del profesional de la educación para la primera infancia en dos países latinoamericanos", una descripción levantada desde las opiniones aportadas por comunidades diversas (directivos docentes, docentes, apoderados de la educación, familias , estudiantes y profesionales de otras áreas; estudio de carácter cualitativo explicativo en el cual participan 10 universidades, miembros de la Omep (Organización Mundial de Educación Preescolar. El estudio tuvo como propósito la caracterización del rol y perfil del educador para la primera infancia, el cual se realiza desde el enfoque de competencias y en el marco de las Políticas Públicas que a nivel de Latinoamérica se han gestado en las últimas décadas en torno a la atención integral y educación de los niños y niñas.

  20. Persepsies t.o.v. die sosio-politieke rol van vakbonde, stakings en vakbonddemokrasie

    Directory of Open Access Journals (Sweden)

    U. Ferndale

    1990-06-01

    Full Text Available Perceptions regarding the socio-political role of labour unions, strikes and trade union democracy. The aim of this study was to determine the perceptions of trade union members and the general public with regard to the socio-political role of the emergent trade unions!. A further aim was to determine whether or not respondents regarded those unions as democratic organisations. The findings of this investigation indicate that the respondents viewed strikes and the socio- political role of trade unions positively. The trade unions mentioned were further regarded as democratic organisations. Opsomming Die doel van hierdie ondersoek was om die persepsies van vakbondlede en die breer publiek t.o.v. die sosio-politieke rol van sogenaamde "emergent" vakbonde1 te peil. Daar is ook gepoog om vas te stel of die "emergent" vakbonde as demokratiese organisasies beskou word, al dan nie. Die bevindinge van hierdie ondersoek was dat die respondente 'n posihewe siening van stakings en die sosio-politieke rol van vakbonde het. Verder word die genoemde vakbonde ook as demokratiese organisasies beskou.

  1. Germinação e armazenamento de sementes de Virola surinamensis (Rol. Warb. (Myristicaceae Germination and storage of seeds of Virola surinamensis (Rol. Warb. (Myristicaceae

    Directory of Open Access Journals (Sweden)

    Juliana Domingues Limas

    2007-02-01

    Full Text Available Este trabalho teve como objetivo estudar a germinação e o armazenamento de sementes de Virola surinamensis (Rol. Warb. em condições de laboratório, no Estado do Amapá, Brasil. Para tanto, frutos foram coletados na Reserva Particular de Patrimônio Natural, "Ekinox", localizada em Macapá. Sementes recém-colhidas do lote original apresentaram teor médio de água de 24% e baixo ganho de água durante a embebição. Devido às diferenças no tamanho e, ou, peso, as sementes colhidas foram divididas em dois grupos: grandes e pequenas. Independentemente do tamanho da semente, a maior porcentagem de germinação e o menor tempo médio de germinação ocorreram a 30 ºC. Sementes armazenadas por 30 dias em condição ambiente (27 ºC ± 3 e 75% ± 5 UR e em germinador (20 ºC e 58% UR apresentaram viabilidade abaixo de 2%, ressaltando-se o comportamento recalcitrante de sementes de Virola surinamensis.The objective of this work was to study the germination and the storage of seeds of Virola surinamensis (Rol. Warb. in laboratory conditions, in the State of Amapa, Brazil. Fruits were harvested in the "Ekinox" Private Reserve of Natural Patrimony, located at Macapa. Seeds recently harvested in the original seedlot showed 24% mean water content and lower water gain, during soaking. Due to differences in the size and/or weight, the seeds were separated in two groups: large and small. Independently of seed size, the highest germination percentage and the lower average germination time occurred at 30ºC. Seeds stored under natural (27 ºC ± 3 e 75% ± 5 RU or germination chamber conditions (20 ºC e 58% RU showed viability lower than 2%, attesting the recalcitrant behavior of Virola surinamensis.

  2. HISTORICAL SOURCES FOR THE ROL-PLAYING GAMES: AN EXPERIMENT ON THE DIDACTICAL TEACHING OF THE ANCIENT HISTORY FUENTES HISTÓRICAS DE LOS JUEGOS DE ROL: UN EXPERIMENTO PARA LA DIDÁCTICA DE LA HISTORIA ANTIGUA

    Directory of Open Access Journals (Sweden)

    Juan Ramón Carbó García

    2010-11-01

    Full Text Available On this paper we intend to emphasize the importance of the historical sources for the conception and ambient of different rol-playing games; therefore, the usefulness of these for the didactical teaching of History too. Likewise, we collect the results of a didactic experiment on university level developed with a rol-playing game set in the Ancient Age and more precisely in the times of the Roman Empire.En este estudio pretendemos resaltar la importancia de las fuentes históricas para la concepción y ambientación de los distintos juegos de rol y por consiguiente, también la utilidad de éstos para la didáctica de la Historia. Asimismo, planteamos los resultados de un experimento didáctico en el nivel universitario desarrollado con un juego de rol ambientado en la Edad Antigua y más precisamente en época del Imperio Romano.

  3. Numerical analysis

    CERN Document Server

    Scott, L Ridgway

    2011-01-01

    Computational science is fundamentally changing how technological questions are addressed. The design of aircraft, automobiles, and even racing sailboats is now done by computational simulation. The mathematical foundation of this new approach is numerical analysis, which studies algorithms for computing expressions defined with real numbers. Emphasizing the theory behind the computation, this book provides a rigorous and self-contained introduction to numerical analysis and presents the advanced mathematics that underpin industrial software, including complete details that are missing from most textbooks. Using an inquiry-based learning approach, Numerical Analysis is written in a narrative style, provides historical background, and includes many of the proofs and technical details in exercises. Students will be able to go beyond an elementary understanding of numerical simulation and develop deep insights into the foundations of the subject. They will no longer have to accept the mathematical gaps that ex...

  4. Multidimensional nonlinear descriptive analysis

    CERN Document Server

    Nishisato, Shizuhiko

    2006-01-01

    Quantification of categorical, or non-numerical, data is a problem that scientists face across a wide range of disciplines. Exploring data analysis in various areas of research, such as the social sciences and biology, Multidimensional Nonlinear Descriptive Analysis presents methods for analyzing categorical data that are not necessarily sampled randomly from a normal population and often involve nonlinear relations. This reference not only provides an overview of multidimensional nonlinear descriptive analysis (MUNDA) of discrete data, it also offers new results in a variety of fields. The first part of the book covers conceptual and technical preliminaries needed to understand the data analysis in subsequent chapters. The next two parts contain applications of MUNDA to diverse data types, with each chapter devoted to one type of categorical data, a brief historical comment, and basic skills peculiar to the data types. The final part examines several problems and then concludes with suggestions for futu...

  5. ROL DEL DOCENTE EN LA GESTIÓN UNIVERSITARIA CONTEMPORÁNEA

    Directory of Open Access Journals (Sweden)

    Yogledis Irma Navarrete Valero

    2013-11-01

    Full Text Available El docente de hoy tiene que estar convencido sobre el papel clave que le corresponde desempeñar en los tiempos actuales y sobre la importancia estratégica, para el futuro de su país, de la institución a la cual sirve. Deberá también estar familiarizado con el nuevo paradigma educativo. Su rol ya no es el del catedrático que simplemente dicta o imparte clases magistrales y luego califica los exámenes de sus alumnos. No es tampoco el del profesor que enseña y luego evalúa si sus alumnos son capaces de repetir lo que les ha enseñado, o de comprobar si asimilaron el conocimiento por él transmitido. Si hoy día lo importante es, como vimos antes, el aprendizaje, o mejor dicho los aprendizajes que los estudiantes realmente incorporan a su experiencia vital, de suerte que aprendan a aprender para que nunca dejen de seguir aprendiendo. Por tanto, los docentes universitarios como responsables de la formación de los estudiantes, deben asumir el rol de orientadores propiciando la autorrealización personal, profesional y laboral con estrategias y nuevas tecnologías de comunicación.PALABRAS CLAVE: gestión universitaria; rol docente; desarrollo profesionalROLE OF THE TEACHING STAFF IN THE CONTEMPORARY UNIVERSITY ADMINISTRATIONABSTRACTIt must be convinced on the key paper that it corresponds to him to carry out in the present times and on the strategic importance, for the future of its country, as the institution to which it serves. It will have to also be familiarized with the new educative paradigm. Its roll no longer is the one of the university professor who simply dictates or gives skillful classes and soon he describes the examinations as his students. He is not either the one of the professor who teaches and soon he evaluates if their students are able to repeat what he has taught to them, or to verify if they assimilated the knowledge by transmitted him. If nowadays the important thing is, as we saw before, the learning or rather the

  6. Cor pulmonale. De rol van het emphyseem en zijn complicaties bij het tekortschieten van het rechter hart

    NARCIS (Netherlands)

    1955-01-01

    Het vraagstuk van de rol, die het emphyseem en zijn complicaties spelen bij de overbelasting van het rechter hart, bracht ons er toe eerst onze aandacht te wijden aan het emphyseem zelf. Wij hebben onder meer stilgestaan bij de bemoeilijkte respiratie (waarbij het aandeel, dat elastische en visceuze

  7. Rol del profesional de enfermería en la coordinación de los planes de salud territorial

    Directory of Open Access Journals (Sweden)

    Patricia Elizabeth León Saavedra

    2015-12-01

    Full Text Available Introducción: Colombia ha buscado la transformación del Sistema General de Seguridad Social, que permita promover la calidad de vida de la población, razón por la cual se crea el Plan de Salud Territorial, fundamentado en la atención primaria que permita direccionar acciones de promoción de salud de la población. Objetivos: Describir la percepción del rol del profesional de enfermería que coordina el plan de salud territorial en el departamento del Meta, durante el año 2012. Método: Estudio cualitativo exploratorio-descriptivo, con una muestra de once profesionales de enfermería coordinadores de Planes de Salud Territorial, determinada por muestreo intencional basado en opiniones. Se utilizó, la entrevista semiestructurada, la cual fue grabada, transcrita y validada. El análisis, se realizó bajo la estructura del análisis de contenido. Resultados: Los datos se agruparon en cinco categorías de análisis: rol de enfermería, ser de enfermería, quehacer de enfermería, sentimientos y emociones en el ejercicio del rol y conocimientos acerca del ejercicio del rol. El artículo muestra los resultados de tres categorías: rol de enfermería, ser de enfermería y sentimientos y emociones en el ejercicio del rol. Conclusiones: El profesional de enfermería percibe el rol como aquellas funciones administrativas y gerenciales que desarrolla en el ejercicio de la coordinación del Plan de Salud Territorial, a través de acciones de enfermería en la planeación, ejecución y evaluación de programas y proyectos de promoción de la salud y prevención de la enfermedad, dirigidas al cuidado de la salud de la población en cada uno de los municipios del departamento del Meta.

  8. El rol del profesor y la actividad demostrativa: una experiencia de aula empleando Geogebra

    OpenAIRE

    Mejía, Cristina; Molina, Óscar

    2013-01-01

    En esta experiencia de aula presento un ciclo didáctico que forma parte del trabajo de grado que estoy desarrollando para optar por el título de maestría en docencia de las Matemáticas. Pretendo exponer una experiencia en la que se analiza el rol del profesor, bajo la teoría de la mediación semiótica y fundamentado en la aproximación metodológica para la enseñanza del grupo Æ•G. Tal ciclo planteado en un aula de octavo grado, favorece la construcción de un sistema teórico local y se emplea un...

  9. Rol de las parejas en el proceso terapeutico de mujeres sobrevivientes de abuso sexual incestuoso

    Directory of Open Access Journals (Sweden)

    Ana María Rodríguez Tapia

    2013-07-01

    Full Text Available En esta investigación se realizó un estudio de caso único, que permite confirmar y ampliar el conocimiento existente acerca de las sobrevivientes de abuso sexual incestuoso, en relación al rol que cumple la pareja en el proceso terapéutico. Los resultados arrojaron que existe una influencia recíproca entre la experiencia de abuso sexual y la relación de pareja, fundamentado en la evaluación que hace la terapeuta del estado de la paciente y en el discurso de la sobreviviente con respecto al daño que percibe del maltrato psicológico recibido por su pareja. Se proponen consideraciones para el trabajo terapéutico, enfatizando la importancia de incorporar a la pareja, de modo que éste sea un recurso y no una limitante para la terapia.

  10. Refugiados en Argentina. El rol de las organizaciones de derechos humanos de la comunidad peruana.

    Directory of Open Access Journals (Sweden)

    María Paula A. Cicogna

    2009-09-01

    Full Text Available Desde 1985 hasta hoy, Argentina se ha convertido en uno de los países en el mundo que más estatutos de refugio ha otorgado. Pero a pesar de ello, el Estado argentino no cumple a menudo con sus obligaciones. En este artículo se describirán, través del análisis del trabajo de campo realizado en esas organizaciones, las acciones llevadas a cabo por las O.N.G. formadas en el seno de la comunidad peruana, las cuales asumieron el rol de protectoras de los derechos humanos de los solicitantes de refugio y refugiados que viven en Buenos Aires.

  11. Fortalecimiento comunitario desde el rol de las madres líderes: apuntes preliminares

    OpenAIRE

    Martínez, Ángela

    2011-01-01

    Uno de los objetivos del proyecto GAIA, “Una propuesta de intervención psicosocial dirigida a potencializar la solidaridad y la capacidad de gestión comunitaria en la población de madres líderes”, es la identificación de la percepción social sobre el rol de la madre líder del Programa Familias en Acción del Municipio de Bello. Para este fin, se está adelantando el proceso de investigación-acción, mediante las técnicas de observación participante y asamblea comunitaria. El presente artículo es...

  12. Evolución y certeza jurídica: el rol de la equidad

    Directory of Open Access Journals (Sweden)

    Alvaro. Garcé García y Santos

    2015-09-01

    Full Text Available Contenido: Acepciones de la palabra "equidad". El sentido de la equidad. La equidad como orden supletorio. Posibilidad del fallo por equidad. El rol de la equidad en el Código Civil. Algunas manifestaciones doctrinarias y jurisprudenciales de la equidad en el derecho privado. La teoría de la imprevisión. Plazo de gracia y alteración del contenido negocial.  La equidad en el derecho sucesorio: aplicación del reajuste del decreto ley 14.500 al pago de legados. Algunas otras referencias jurisprudenciales a la idea de equidad en el derecho privado. La equidad en el derecho del trabajo. Breve referencia a la jurisprudencia laboral.Conclusiones

  13. Rol del kinesiólogo en una unidad de piso pelviano

    Directory of Open Access Journals (Sweden)

    Fuentes V. Kine. Bernardita

    2013-03-01

    Full Text Available Las disfunciones del piso pélvico (DPP deben ser evaluadas y tratadas en forma multidisciplinaria. El kinesiólogo especialista en piso pelviano es un profesional que tiene un rol bien definido en este equipo de salud. La rehabilitación es considerada como tratamiento de primera línea en el abordaje de un número significativo de DPP. Los inicios del entrenamiento muscular del piso pélvico datan de los años 50, sin embargo desde la década de los 80, el kinesiólogo no solo realiza ejercicios, sino que su enfoque es más amplio incluyendo una serie de técnicas kinésicas y que se denomina reeducación pelviperineal (RPP. Los resultados de los tratamientos de rehabilitación han sido demostrados en distintas disfunciones del piso pelviano, teniendo además un rol fundamental en la prevención. El desarrollo de esta especialidad es nueva en nuestro país, pero ha ido adquiriendo poco a poco más relevancia y credibilidad. El objetivo del siguiente artículo es exponer el enfoque y el aporte del kinesiólogo, no sólo en el tratamiento sino también en la prevención de disfunciones del piso pelviano. Además se desea dar a conocer la indicación y las etapas y método de la reeducación pelviperineal y por último, el desarrollo que ha tenido esta especialidad kinésica en nuestro país.

  14. El rol del docente y del estudiante en las clases de historia

    Directory of Open Access Journals (Sweden)

    Zandra Herrera Jacobs

    2013-09-01

    Full Text Available El siglo XXI ha traído consigo la necesidad de formar un hombre acorde con este nuevo tiempo, un ciudadano del mundo, que forma parte de una civilización global pero que también está comprometido con su país, con su comunidad y es capaz de adaptarse al cambio constante. Para lograr este objetivo se hace necesario que los docentes faciliten el aprender a conocer, el aprender a hacer, el aprender a convivir y el aprender a ser, utilizando las oportunidades que brindan las nuevas tecnologías de la información y la comunicación. Se realizó un estudio preexperimental, preprueba-postprueba con un solo grupo, para determinar si la asistencia de una muestra de veinte estudiantes de la carrera Licenciatura en Educación Integral de la Universidad Nacional Abierta, que ejercen la docencia, a un taller de enseanza-aprendizaje de la Historia Moderna y Contemporánea de Venezuela a través del análisis psicosocial de obras literarias con apoyo de las TICs, influía en la percepción que tenían, según el género, acerca del rol del estudiante y el rol del docente en las clases de Historia. Los resultados indicaron cambios en la percepción acerca de estos roles pero no se evidenciaron diferencias significativas entre la percepción según el género de los estudiantes.

  15. Numerical analysis

    CERN Document Server

    Brezinski, C

    2012-01-01

    Numerical analysis has witnessed many significant developments in the 20th century. This book brings together 16 papers dealing with historical developments, survey papers and papers on recent trends in selected areas of numerical analysis, such as: approximation and interpolation, solution of linear systems and eigenvalue problems, iterative methods, quadrature rules, solution of ordinary-, partial- and integral equations. The papers are reprinted from the 7-volume project of the Journal of Computational and Applied Mathematics on '/homepage/sac/cam/na2000/index.html<

  16. Numerical Relativity

    Science.gov (United States)

    Baker, John G.

    2009-01-01

    Recent advances in numerical relativity have fueled an explosion of progress in understanding the predictions of Einstein's theory of gravity, General Relativity, for the strong field dynamics, the gravitational radiation wave forms, and consequently the state of the remnant produced from the merger of compact binary objects. I will review recent results from the field, focusing on mergers of two black holes.

  17. Numerical relativity

    CERN Document Server

    Nakamura, T

    1993-01-01

    In GR13 we heard many reports on recent. progress as well as future plans of detection of gravitational waves. According to these reports (see the report of the workshop on the detection of gravitational waves by Paik in this volume), it is highly probable that the sensitivity of detectors such as laser interferometers and ultra low temperature resonant bars will reach the level of h ~ 10—21 by 1998. in this level we may expect the detection of the gravitational waves from astrophysical sources such as coalescing binary neutron stars once a year or so. Therefore the progress in numerical relativity is urgently required to predict the wave pattern and amplitude of the gravitational waves from realistic astrophysical sources. The time left for numerical relativists is only six years or so although there are so many difficulties in principle as well as in practice.

  18. Numerical ecology with R

    CERN Document Server

    Borcard, Daniel; Legendre, Pierre

    2018-01-01

    This new edition of Numerical Ecology with R guides readers through an applied exploration of the major methods of multivariate data analysis, as seen through the eyes of three ecologists. It provides a bridge between a textbook of numerical ecology and the implementation of this discipline in the R language. The book begins by examining some exploratory approaches. It proceeds logically with the construction of the key building blocks of most methods, i.e. association measures and matrices, and then submits example data to three families of approaches: clustering, ordination and canonical ordination. The last two chapters make use of these methods to explore important and contemporary issues in ecology: the analysis of spatial structures and of community diversity. The aims of methods thus range from descriptive to explanatory and predictive and encompass a wide variety of approaches that should provide readers with an extensive toolbox that can address a wide palette of questions arising in contemporary mul...

  19. Numerical ecology with r

    CERN Document Server

    Borcard, Daniel; Legendre, Pierre

    2018-01-01

    This new edition of Numerical Ecology with R guides readers through an applied exploration of the major methods of multivariate data analysis, as seen through the eyes of three ecologists. It provides a bridge between a textbook of numerical ecology and the implementation of this discipline in the R language. The book begins by examining some exploratory approaches. It proceeds logically with the construction of the key building blocks of most methods, i.e. association measures and matrices, and then submits example data to three families of approaches: clustering, ordination and canonical ordination. The last two chapters make use of these methods to explore important and contemporary issues in ecology: the analysis of spatial structures and of community diversity. The aims of methods thus range from descriptive to explanatory and predictive and encompass a wide variety of approaches that should provide readers with an extensive toolbox that can address a wide palette of questions arising in contemporary mul...

  20. Gaps in nonsymmetric numerical semigroups

    International Nuclear Information System (INIS)

    Fel, Leonid G.; Aicardi, Francesca

    2006-12-01

    There exist two different types of gaps in the nonsymmetric numerical semigroups S(d 1 , . . . , d m ) finitely generated by a minimal set of positive integers {d 1 , . . . , d m }. We give the generating functions for the corresponding sets of gaps. Detailed description of both gap types is given for the 1st nontrivial case m = 3. (author)

  1. Social Role of Public Libraries Halk Kütüphanelerinin Toplumsal Rolü

    Directory of Open Access Journals (Sweden)

    Selma Alpay Aslan

    1998-12-01

    Full Text Available Public libraries developed in the mid-nineteenth century to meet the need of the industrial society for more knowledgeable people. The right to have access to information adopted by the United Nations in 1946 strengthened the role of the public library as a main channel for people to get information. Is there still a role for the public library in the information society? The answer to this question is yes. Just as books, the benefits of the information and communication technologies should be there for everyone. It is of great concern that there is a gap between the information rich and the poor. The public library is an opportunity to bridge this gap. The learning individual required by the knowledge based global economy will need the public library more than ever to have access both to print and electronic sources. Halk kütüphaneleri 19. yüzyılın ortalarında endüstri toplumunun gereksinim duyduğu daha bilgili insan gereksinimine bir yanıt olarak gelişmiştir. 1946'da Birleşmiş Milletler'in benimsediği bilgi edinme hakkı, halkın bilgi edinmesinde önemli rolü olan bu kurumu daha da güçlendirmiştir. Bilgi toplumunda hala halk kütüphanelerine bir rol düşecek midir? Bu sorunun yanıtı evettir. Tıpkı kitaplar gibi, enformasyon ve iletişim teknolojilerinin olanakları da orada herkes için var olmalıdır. Bilgi varsılı ile yoksulu arasındaki uçurum büyük kaygı kaynağıdır. Halk kütüphaneleri bu uçurumun kapanması için fırsatlar yaratır. Bilgiye dayalı küresel ekonomik düzenin insanı olan öğrenen birey, basılı ve elektronik kaynaklara erişebilmek için her zaman olduğundan daha fazla halk kütüphanelerine gereksinim duyacaktır.

  2. Diagnostico de situacion del rol del bibliotecólogo en los medios de comunicacion de Montevideo

    Directory of Open Access Journals (Sweden)

    Eliana Carvidón

    2013-12-01

    Full Text Available Este artículo sintetiza los fundamentos teóricos y metodológicos así como los resultados y conclusionesobtenidos en el proyecto de investigación denominado “El rol del bibliotecólogo en los medios de comunicación de Montevideo”, que fue elaborado para la obtención del título de Licenciado en Bibliotecología.

  3. Estrés de rol y satisfacción laboral: examinando el papel mediador del engagement en el trabajo

    Directory of Open Access Journals (Sweden)

    Alejandro Orgambídez-Ramos

    2015-01-01

    Full Text Available El objetivo de este estudio es examinar las relaciones entre estrés de rol, engagement y satisfacción laboral de acuerdo con el modelo demandas-recursos laborales. El modelo propuesto plantea que el engagement media la relación entre ambigüedad, conflicto y sobrecarga de rol, por un lado y satisfacción en el trabajo, por el otro. Para verificar el modelo, se obtuvieron datos de una muestra de 586 trabajadores del sur de Espana ( ˜ Medad = 37.11, 50% mujeres. El ajuste del modelo y de la mediación se realizaron mediante un modelo de ecuaciones estructurales (path analysis. Los resultados mostraron que el conflicto de rol y la ambigüedad de rol junto con el engagement fueron predictores significativos de la satisfacción laboral. No obstante, el engagement no medió la relación entre el estrés de rol y la satisfacción laboral. El estrés de rol como demanda obstaculizadora explicaría el mayor impacto directo sobre la satisfacción que a través del engagement. Se proponen implicaciones prácticas y futuras investigaciones.

  4. CAMBIO DE ACTITUDES Y VALORES ANTE LA ENERGÍA TRAS EL USO DE UN JUEGO DE ROL

    Directory of Open Access Journals (Sweden)

    Jorge Hernández Carbonell

    2010-11-01

    Full Text Available Los juegos de rol en educación se han definido como dramatizaciones que se vertebran en torno a una situación concreta y utilizan la asignación de papeles a alumnos, quienes deberán defender con argumentos una opinión (previamente perfilada frente a un problema. Cada vez más utilizados en la educación formal y no formal, destacan entre sus ventajas el convertir lo lúdico en aprendizaje, potenciar el aprendizaje de actitudes y valores y la conexión que se realiza con la vida real entre otros. La utilización de un juego de rol en una investigación educativa sobre cambio de actitudes y valores ante los recursos energéticos cuyos resultados educativos fueron positivos, permitió repetir dicha investigación usando la variable “utilización/no utilización del juego de rol”, lo que concedió la posibilidad de analizar la importancia de los juegos de rol en la potenciación de cambios en las actitudes y valores de los usuarios de estos juegos.

  5. Funcionamiento familiar y consumo de sustancias en adolescentes: el rol mediador de la autoestima

    Directory of Open Access Journals (Sweden)

    Teresa I. Jiménez

    2008-01-01

    Full Text Available En el presente estudio ex post facto se analizan las relaciones directas e indirectas entre el funcionamiento familiar, la autoestima considerada desde una perspectiva multidimensional (autoestima familiar, escolar, social y física y el consumo de sustancias en una muestra de 414 adolescentes. Para el análisis de datos se utilizan matrices de correlaciones bivariadas, el cálculo de ecuaciones estructurales y se sigue el procedimiento de análisis de efectos mediadores. Los resultados muestran que las distintas dimensiones de la autoestima median conjuntamente el 82% de la relación entre el funcionamiento familiar y el consumo de sustancias de los adolescentes. Además, se observa, por un lado, un efecto protector de las autoestimas familiar y escolar frente a la implicación en el consumo de sustancias y, por otro, un efecto de riesgo de las autoestimas social y física. Finalmente, se discute el rol de la autoestima como un mediador para determinadas influencias del contexto familiar y como un recurso psicosocial paradójico en relación con el consumo de sustancias en la edad adolescente.

  6. Numerical analysis

    CERN Document Server

    Jacques, Ian

    1987-01-01

    This book is primarily intended for undergraduates in mathematics, the physical sciences and engineering. It introduces students to most of the techniques forming the core component of courses in numerical analysis. The text is divided into eight chapters which are largely self-contained. However, with a subject as intricately woven as mathematics, there is inevitably some interdependence between them. The level of difficulty varies and, although emphasis is firmly placed on the methods themselves rather than their analysis, we have not hesitated to include theoretical material when we consider it to be sufficiently interesting. However, it should be possible to omit those parts that do seem daunting while still being able to follow the worked examples and to tackle the exercises accompanying each section. Familiarity with the basic results of analysis and linear algebra is assumed since these are normally taught in first courses on mathematical methods. For reference purposes a list of theorems used in the t...

  7. ROLEPLAYING GAME AND LEARNING, TOWARD A GENERAL TAXONOMY JUEGO DE ROL Y EDUCACIÓN, HACIA UNA TAXONOMÍA GENERAL

    Directory of Open Access Journals (Sweden)

    Antonio Roda

    2010-11-01

    Full Text Available The definition of Role-Playing Game tends to be ambiguous and always excludes some of its modalities. To achieve an acceptable term, we propose the integration of the concepts of narration, representation and game. Subsequently, we should work with an initial taxonomic approach with the next criteria: basic modality, types and parts of manuals, possible worlds in connection with the real world, and genre. Each type has a different variety of qualifications and pedagogic applications. Everything sets up a descriptive generic framework from where we can start a multidisciplinary methodological approach with specialists in the content creation and pedagogic advisors.La definición del juego de rol suele resultar ambigua y deja atrás alguna de las modalidades del mismo. Se propone por tanto una integración de los conceptos narración, representación y juego para hallar un término aceptable. Posteriormente se trabaja con un acercamiento taxonómico inicial en función de los siguientes criterios: modalidad básica, tipos o partes de manuales, mundos posibles en relación al mundo real y géneros. Para cada clase se hace un panorama de capacitaciones y aplicaciones pedagógicas. Todo queda como un marco genérico descriptivo a partir del cual puede empezar un acercamiento metodológico multidisciplinar con especialistas tanto de elaboración de contenidos como asesores pedagógicos.

  8. Desarrollo de la microbiota gastrointestinal en lactantes y su rol en salud y enfermedad

    Directory of Open Access Journals (Sweden)

    Carolina A. Serrano Honeyman

    2016-05-01

    Full Text Available Durante la última década, con la aparición de técnicas de secuenciación de última generación basadas en la filogenia del gen 16S rRNA y complejas plataformas bioinformáticas, la composición del microbioma y su rol en salud y enfermedad ha sido sujeto de investigación activa. Existe una creciente evidencia entre la disbiosis microbiana y un riesgo aumentado de desarrollar enfermedades de tipo inflamatorio, autoinmune, y metabólico tales como asma, diabetes, obesidad y enfermedades gastrointestinales crónicas. El ensamblaje de la microbiota intestinal en los humanos comienza antes y durante el proceso de parto y evoluciona con la alimentación durante la infancia y debe ser entendido en profunda  relación con el microbioma de su madre. La comprensión del impacto de la microbiota en la morbilidad en humanos necesariamente requerirá de una etapa previa como es el conocimiento del desarrollo y ensamblaje precoz de la microbiota en recién nacidos, y como intervenciones médicas precoces como es la elección en la ruta de parto (parto cesárea versus parto vaginal, uso precoz de antibióticos, selección de fórmula láctea (lactancia materna versus formulas artificiales, entre otros, pueden modificar en forma sustancial su conformación y a través de cambios en el desarrollo del sistema inmune, ejercer un impacto en salud y enfermedad en neonatos, lactantes y posteriormente a lo largo de la vida de un ser humano.

  9. Representaciones sociales del rol orientador del docente en estudiantes de educación

    Directory of Open Access Journals (Sweden)

    María Susana Campo-Redondo

    2009-01-01

    Full Text Available Este estudio tuvo como objetivo identificar y analizar las representaciones sociales que tienen los estudiantes de la Escuela de Educación de la Facultad de Humanidades y Educación de la Universidad del Zulia (LUZ, sobre las funciones orientadoras del ejercicio docente. El estudio fue de campo a nivel descriptivo y desde un enfoque cualitativo. La recolección de la información fue mediante la aplicación entrevistas a profundidad a 10 estudiantes de educación de las menciones de Educación Física, Deportes y Recreación (4, Matemática y Física (4 y Biología (2 además del análisis de exámenes escritos de la asignatura "Psicología Educativa" de la mención de matemáticas. El análisis de las informaciones recabadas se realizó mediante la Teoría Fundamentada. Como resultados, se determinó que los estudiantes participantes, tienen una representación del docente con un gran componente de ayuda, caracterizado por la escucha efectiva y el interés por sus alumnos expresado en: la paternalidad, la amistad y el compañerismo, además es un líder que impacta a sus estudiantes y posee una imagen fundamentada en su rol docente y su formación profesional. Por último se proponen algunas recomendaciones en cuanto a la formación de docentes.

  10. Burnout y su relación con la ambigüedad de rol, conflicto de rol y absentismo laboral en trabajadores de la salud.

    OpenAIRE

    Olivares Faúndez, Victor E.; Gil Monte, Pedro Rafael; Mena Miranda, L.; Jélvez-Wilke, C.; Figueiredo-Ferraz, Hugo

    2014-01-01

    The aim of this research was to analyze the influence of some psychosocial risk factors in the development of burnout and to analyze the influence of this phenomenon on employee absenteeism. The study simple included 142 health care workers. The data analysis included descriptive statistics and multiple linear regression models. The results confirmed the influence of role ambiguity and role conflict on burnout [F (2.139) = 26.720; p < .001], but the influence of burnout on employee absenteeis...

  11. Agrobacterium-mediated transformation of tomato with rolB gene results in enhancement of fruit quality and foliar resistance against fungal pathogens.

    Science.gov (United States)

    Arshad, Waheed; Haq, Ihsan-ul-; Waheed, Mohammad Tahir; Mysore, Kirankumar S; Mirza, Bushra

    2014-01-01

    Tomato (Solanum lycopersicum L.) is the second most important cultivated crop next to potato, worldwide. Tomato serves as an important source of antioxidants in human diet. Alternaria solani and Fusarium oxysporum cause early blight and vascular wilt of tomato, respectively, resulting in severe crop losses. The foremost objective of the present study was to generate transgenic tomato plants with rolB gene and evaluate its effect on plant morphology, nutritional contents, yield and resistance against fungal infection. Tomato cv. Rio Grande was transformed via Agrobacterium tumefaciens harbouring rolB gene of Agrobacterium rhizogenes. rolB. Biochemical analyses showed considerable improvement in nutritional quality of transgenic tomato fruits as indicated by 62% increase in lycopene content, 225% in ascorbic acid content, 58% in total phenolics and 26% in free radical scavenging activity. Furthermore, rolB gene significantly improved the defence response of leaves of transgenic plants against two pathogenic fungal strains A. solani and F. oxysporum. Contrarily, transformed plants exhibited altered morphology and reduced fruit yield. In conclusion, rolB gene from A. rhizogenes can be used to generate transgenic tomato with increased nutritional contents of fruits as well as improved foliar tolerance against fungal pathogens.

  12. Agrobacterium-mediated transformation of tomato with rolB gene results in enhancement of fruit quality and foliar resistance against fungal pathogens.

    Directory of Open Access Journals (Sweden)

    Waheed Arshad

    Full Text Available Tomato (Solanum lycopersicum L. is the second most important cultivated crop next to potato, worldwide. Tomato serves as an important source of antioxidants in human diet. Alternaria solani and Fusarium oxysporum cause early blight and vascular wilt of tomato, respectively, resulting in severe crop losses. The foremost objective of the present study was to generate transgenic tomato plants with rolB gene and evaluate its effect on plant morphology, nutritional contents, yield and resistance against fungal infection. Tomato cv. Rio Grande was transformed via Agrobacterium tumefaciens harbouring rolB gene of Agrobacterium rhizogenes. rolB. Biochemical analyses showed considerable improvement in nutritional quality of transgenic tomato fruits as indicated by 62% increase in lycopene content, 225% in ascorbic acid content, 58% in total phenolics and 26% in free radical scavenging activity. Furthermore, rolB gene significantly improved the defence response of leaves of transgenic plants against two pathogenic fungal strains A. solani and F. oxysporum. Contrarily, transformed plants exhibited altered morphology and reduced fruit yield. In conclusion, rolB gene from A. rhizogenes can be used to generate transgenic tomato with increased nutritional contents of fruits as well as improved foliar tolerance against fungal pathogens.

  13. Rol cuidador en Familias de Usuarios de la Unidad de Atención de Conductas Adictivas

    Directory of Open Access Journals (Sweden)

    Nelly Rey de Cruz

    2010-12-01

    Full Text Available Introducción: El objeto del estudio fue determinar las características del rol cuidador de las familias de los usuarios de la unidad de atención de conductas adictivas del hospital psiquiátrico San Camilo en la ciudad de Bucaramanga y su área metropolitana. Materiales y Métodos: Estudio descriptivo, población tomada dela base de datos del ESE Hospital Psiquiátrico San Camilo, donde participaron 10 familias de usuariosde la unidad de atención de conductas psicoactivas en Bucaramanga y su área Metropolitana. La encuesta tenía 9 variable conformadas por 26 preguntas. Resultados: De untotal de 10 encuestas útiles (100% se encontró que hay apoyo familiar económico en el 50% y emocional 40%, en la función del rol cuidador el 40% lo ejerce la madre, se encontró un grado de disfuncionalidad severa en el 90% de las familias encuestadas. Discusión y Conclusiones: las sustancias psicoactivas traen uncambio en la conducta del consumidor y sus relacionesafectivas en el hogar, ya que la mayoría de familias soninestables cuando se enfrentan a dicho problema poreso los programas como de farmacodependientes se deberían implementar mas para disminuir la alta tasade violencia que se viven en los hogares de usuariosconsumidores. (Rev Cuid 2010;1(1:6-9: Conducta Adictiva, Consumidores de Drogas, Rol, Familias. (Fuente: DeCS BIREME.

  14. Estrategia didáctica para la construcción del rol del profesional informático

    OpenAIRE

    Castro Chans, Beatriz; Goñalons, Gabriela; Guastavino Mosna, María Lorena; Pucheta, María

    2015-01-01

    El siguiente trabajo presenta la aplicación de una estrategia didáctica desarrollada en el marco de la asignatura “Sistemas v Organizaciones” del primer año de la carrera Licenciatura en Sistemas de Información, de la Facultad de Ciencias Exactas v Naturales v Agrimensura de la Universidad Nacional del Nordeste. La propuesta está orientada al desarrollo de actividades que promueven la construcción del rol del profesional informático. Asimismo, propician la articulación entre teoría v práct...

  15. Tutor virtual: el rol del profesor ante el reto de la enseñanza online del Derecho

    OpenAIRE

    Gallego Córcoles, Ascensión; Sánchez López, María Esther

    2014-01-01

    La introducción de las TICs en los procesos de enseñanza-aprendizaje exige hacer frente al reto de su inserción y adaptación al mismo en el ámbito universitario, así como analizar las diversas estrategias formativas y comunicativas recomendadas para el uso de las TICs en la docencia. En este entorno resulta conveniente examinar el rol asignado al e-tutor o e-profesor y, como correlato, el papel del alumno en el marco de la enseñanza online del Derecho. Ello pasa por la identificación de las f...

  16. Las metacaspasas y su rol en la vida y muerte de los parásitos protozoarios humanos

    OpenAIRE

    Iveth J. González

    2009-01-01

    Las metacaspasas son proteasas de cisteína similares estructuralmente a las caspasas y cuyos genes están presentes en organismos carentes de caspasas, tales como plantas, levaduras y parásitos protozoarios. El bien conocido papel de varias caspasas en la apoptosis de células de mamíferos, ha motivado el estudio del posible rol de las metacaspasas en la muerte celular programada de los organismos en los cuales se expresan. Así, por ejemplo, las metacaspasas de los parásitos protozoarios hum...

  17. BASES CONCEPTUALES DE LA RENDICIÓN DE CUENTAS Y EL ROL DE LAS ENTIDADES DE FISCALIZACIÓN SUPERIOR

    OpenAIRE

    Bolaños Gonzaléz, Jimmy

    2013-01-01

    The democratic political system of our countries,public administration and citizens have been developingsome new instruments that help publicmanagers govern well and at the same time allowcitizens to appropriately control government actions.Accountability is an important one of theseinstruments. This work tries to lay the conceptualBASES CONCEPTUALES DE LA RENDICIÓNDE CUENTAS Y EL ROL DE LAS ENTIDADESDE FISCALIZACIÓN SUPERIORJimmy Bolaños GonzálezContraloría General de la República, Costa Ric...

  18. El rol de la memoria colectiva y de la memoria individual en la conversión identitaria mapuche

    OpenAIRE

    Aravena R,Andrea

    2003-01-01

    A través de un estudio de casos con indígenas urbanos r esidentes en la ciudad de Santiago, proponemos analizar el rol de la memoria colectiva en el proceso de reconstrucción identitaria del mapuche urbano. Los residentes mapuche urbanos son miles de personas y sus experiencias, aún teniendo aspectos similares y compartidos, se dividen en múltiples fragmentos de acuerdo al género, la edad, la procedencia -rural o urbana-, el origen étnico de la familia, el lugar de acogida -la familia o el tr...

  19. Convertirse en madre durante la adolescencia: activación del rol materno en el control prenatal

    Directory of Open Access Journals (Sweden)

    Claudia Maria Moreno Mojica

    2015-07-01

    Full Text Available Introducción: Las adolescentes gestantes constituyen un grupo poblacional vulnerable,  con limitación en la construcción de la identidad personal frente a la materna e  imposibilidad de constitución  de una familia estable  que  afectan su calidad de vida y la del hijo por nacer. El objetivo del artículo es dar a conocer el alcance que tiene la aplicación de una estrategia de cuidado de enfermería que promovió el cuidado integral de la adolescente gestante en  la activación del rol materno durante el control prenatal. Materiales y Métodos: Este artículo es el resultado de la aplicación de una estrategia de cuidado de enfermería: programa de atención integral a la adolescente gestante durante el control prenatal, con base en la teoría de Mercer, y estructurado desde el marco lógico; la estrategia contó con la participación de diez adolescentes en gestación y el equipo interdisciplinario. Resultados: Adopción e implementación de la estrategia y apertura Institucional del centro de apoyo y cuidado para adolescentes gestantes “Creciendo Juntos”, que promovió el cuidado integral y permitió la activación del rol materno  durante el control prenatal. Discusión: El convertirse en madre adolescente, no se activa sin la influencia del cuidado estructurado brindado por enfermería quien lidera el equipo de salud, quienes permiten  a las gestantes, disminuir sus miedos, conocer y vivir el proceso de gestación y aprender las tareas para trascender hacia la activación del rol materno. Conclusiones: La Estrategia valida la visibilidad del cuidado sustentado en una teoría de enfermería, al dar respuesta a las necesidades humanas.Cómo citar este artículo: Moreno CM, Mesa NP, Pérez Z, Vargas DP. Convertirse en madre durante la adolescencia: activación del rol materno en el control prenatal. Rev Cuid. 2015; 6(2: 1041-53. http://dx.doi.org/10.15649/cuidarte.v6i2.162 

  20. EL SUELO AL SERVICIO DE LA SOCIEDAD Y SU ROL EN EL CONTEXTO DE LOS CAMBIOS GLOBALES

    Directory of Open Access Journals (Sweden)

    Hernán Burbano Orjuela

    2010-07-01

    Full Text Available Este artículo examina la relación entre suelo, vida y sociedad y destaca que el primero es el soporte del complejo sistema propio del planeta. Señala que en las disfunciones del sistema terrestre se inscriben los problemas del suelo. Alude a los cambios globales contemporáneos y al rol del suelo en este contexto. Y, finalmente, destaca que el suelo se ubica en un planeta que funciona como un sistema que se debe mantener en condiciones adecuadas para la vida.

  1. Numerical description of creep of highly creep resistant alloys

    International Nuclear Information System (INIS)

    Preussler, T.

    1991-01-01

    Fatigue tests have been performed with a series of highly creep resistant materials for gas turbines and related applications for gaining better creep data up to long-term behaviour. The investigations were performed with selected individual materials in the area of the main applications down to strains and stresses relevant to design, and have attained trial durations of 25000 to 60000 h. In continuing former research, creep equations for a selection of characterizing individual materials have been improved and partly newly developed on the basis of a differentiated evaluation. Concerning the single materials, there are: one melt each of the materials IN-738 LC, IN-939, IN-100, FSX-414 and Inconel 617. The applied differentiated evaluation is based on the elastoplastical behaviour from the hot-drawing test, the creep behaviour from the non interrupted or the interrupted fatigue test, and the contraction behaviour from the annealing test. The creep equations developed describe the high temperature deformation behaviour taking into account primary, secondary and partly the tertiary creep dependent of temperature, stress and time. These equations are valid for the whole application area of the respective material. (orig./MM) [de

  2. El rol de la universidad en la prevención de la obesidad

    Directory of Open Access Journals (Sweden)

    Carlos Alfonso González-Gómez

    2015-05-01

    Full Text Available Introducción: La obesidad es la enfermedad crónica no transmisible más prevalente. El aumento de la prevalencia de esta enfermedad está asociado con la edad, razón por la cual los estudiantes universitarios son un grupo importante, el cual puede ser influenciado por programas de bienestar universitario. Materiales y Métodos: Articulo de reflexión, que discute las políticas colombianas y estrategias para la prevención de la obesidad y las enfermedades cardiovasculares. Resultados: Literatura muestra que hay puntos críticos aplicables en la prevención de la obesidad y las enfermedades cardiovasculares en la comunidad universitaria. Estos puntos incluyen pobre participación de prevención de universidades,  inadecuada articulación de sectores involucrados para resolver deficiencias del sistema y así esperar mejores desenlaces en la comunidad.  Discusión: Pese al conocimiento de estrategias que favorecen la actividad física en la población universitaria y población general, no hay una red articulada entre las universidades y el gobierno que permitan generar impacto en la prevención de enfermedad cardiovascular y obesidad. Se requiere participación de universidades (bienestar universitario, estudiantes y gobernantes para promover y ejecutar programas y políticas sostenibles a largo plazo. Conclusiones: Pese a la existencia de leyes y normas que regulan el bienestar universitario en Colombia, no existen intervenciones eficaces para la prevención de la obesidad. Se deben intervenir grupos en riesgo, así como adecuar espacios apropiados para la alimentación y realización de actividad física. Estas reformas implican la participación articulada de estudiantes, personal administrativo y líderes políticos, en coordinación con los centros de bienestar universitario.Cómo citar este artículo: González-Gómez CA, Camacho-Ruiz  JF, Barajas-Gamboa  JS. El rol de la universidad en la prevención de la obesidad. Rev Cuid

  3. Inseguridad: en busca del rol de los medios de comunicación

    Directory of Open Access Journals (Sweden)

    Focás, Brenda

    2013-01-01

    Full Text Available [es] La llamada “sensación de inseguridad” se presenta con el declive del Estado de Bienestar, en un escenario de situaciones de desamparo, violencia civil, frágiles inserciones laborales, y falta de perspectivas de integración hacia el futuro. En este contexto, en Argentina, se duplicó el porcentaje de personas que teme ser víctima del delito, mientras que la tasa de criminalidad, luego de experimentar un aumento, se mantiene constante.Este artículo cuestiona el rol de los medios de comunicación en torno a la construcción de los discursos sobre la inseguridad y, para ello, se propone los siguientes objetivos. En primer lugar, analizar las operaciones mediáticas que marcaron fuertes cambios en la noticia policial: la cámara en el lugar del hecho, la actualización constante de la información por Internet, y la utilización de un estilo narrativo sensacionalista. En segundo lugar, indagar en la literatura sobre algunas líneas teóricas y/o autorales desde donde se pensó el proceso de recepción y circulación de la representación mediática del delito y, finalmente, reflexionar sobre el papel de los medios como responsables o posibilitadores de la inseguridad en un ethos epocal marcado por la indiferenciación cultural y la exclusión social. [en] The so-called ´feeling of insecurity´ comes about with the decline of the Welfare State, when the scene showed situations of neglect, civil violence, fragile job placement, and lack of integration prospects for the future. In Argentina, during the last years, the percentage of people who fear becoming a victim of crime doubled, while crime rates – after experiencing an increase - have leveled off. This article questions the role of the mass media in insecurity discourse construction, aiming at the following objectives. Firstly, to analyze the media operations which became a turning point in crime news: the camera on the action point, constant information update through the Internet

  4. El rol del cine en versión original en el espacio digital europeo

    Directory of Open Access Journals (Sweden)

    2017-04-01

    Full Text Available El presente trabajo pormenoriza los resultados de la investigación «eDCinema: Hacia el espacio digital europeo, el papel de las cinematografías pequeñas en versión original» (CSO2012-35784, orientada al análisis del rol que el cine en VO/VOS desempeña en la consecución de la diversidad lingüística y cultural contemplada en la Agenda Digital Europea, así como del encaje normativo de las cinematografías de pequeñas dimensiones en el espacio digital europeo. La triangulación múltiple del proyecto pivota sobre un planteamiento pluridisciplinar, basado en un intercambio transnacional de conocimientos dimanantes de un panel de 62 expertos europeos, así como en un pautado polietápico que incluye: revisión crítica de la escasa literatura ensayística y de la profusa normativa comunitaria, realización de entrevistas en profundidad a expertos y diseño y aplicación de un cuestionario prospectivo Delphi. Entre los resultados del estudio destaca el hecho paradójico de que, frente a la contrastada relevancia del acceso a contenidos en VO como complemento indispensable de la cohesión cultural europea y de la consecución del ideal de diversidad lingüística, la UE continúa implementando paquetes de medidas de carácter aleatorio, fragmentario y contingente que, en general, abocan a una sistémica ausencia de resultados. Consecuentemente, se recomienda una reorientación estratégica del modelo audiovisual europeo a la explotación de sus 24 lenguas, en su condición vernácula y no sólo vehicular, como garantes del acceso fidedigno a vastos repertorios culturales o científicos.

  5. Implementing a Description Grammar Interpreter : A Notation for Descriptions and Description Rules

    NARCIS (Netherlands)

    Stouffs, R.M.F.

    2015-01-01

    Description grammars represent a formalism for generating verbal descriptions of designs, used in conjunction with shape grammars. A description grammar constitutes a set of description rules that define a language of descriptions. A description grammar interpreter implements the mechanisms to

  6. El conflicto de rol de género masculino y su vinculación con el acoso escolar (bullying)

    OpenAIRE

    Navarro, Raúl; Larrañaga, Elisa; Yubero, Santiago

    2015-01-01

    En este estudio se analiza la asociación entre el conflicto de rol de género masculino y las conductas de acoso y victimización escolar. La muestra estuvo formada por 786 chicos estudiantes españoles, de edades comprendidas entre los 11 y los 17 años (M=14.5, DT=1.58). Se establecieron tres grupos de experimentación del conflicto de rol de género tanto a nivel global como en cada uno de sus patrones: nivel alto, medio y bajo. Los resultados de los distintos análisis de varianza indicaron que ...

  7. Descripción del rol autopercibido del psicólogo y sus implicancias en los procesos de formación de pregrado

    OpenAIRE

    González,Mauricio; González,Ingrid; Vicencio,Karol

    2014-01-01

    La valoración social de los psicólogos es cambiante y depende en gran medida de la calidad de los procesos de formación. Los formadores de psicólogos deben considerar y reflexionar en torno al rol autopercibido y las dificultades en el ejercicio profesional de los psicólogos en ejercicio. El objetivo de esta investigación fue describir el rol autopercibido del psicólogo: las tareas, dificultades y las competencias requeridas en sus diferentes ámbitos de desempeño profesional. Para esto, se re...

  8. Demandas obstaculizados en el trabajo: El efecto de estrés de rol en la relación entre engagement y satisfacción laboral

    OpenAIRE

    Orgambídez-Ramos, Alejandro

    2017-01-01

    # Introducción Dentro de los riesgos psicosociales en el trabajo, se destacan especialmente los estresores de rol por su impacto en el burnout y en la satisfacción laboral (EU-OSHA, 2014). En concreto, se ha mostrado que el conflicto y la ambigüedad de rol son dos de los obstáculos más frecuentes de los trabajadores al enfrentarse a las nuevas exigencias en las empresas, muchas veces sin la información y los recursos necesario (Garrosa, et al., 2008). Además, desde el modelo Demandas-Recur...

  9. Modelo de rol materno en la alimentación del lactante: Teoría del rango medio

    Directory of Open Access Journals (Sweden)

    Rosario Edith Ortiz-Félix

    Full Text Available Las interacciones madre-hijo durante la alimentación en el primer año de vida tienen impacto duradero en la regulación del apetito y el desarrollo de obesidad actual y futura del individuo. Para los profesionales de enfermería es un reto y una nueva función prevenir problemas nutricionales en los lactantes. Contar con teorías de rango medio propias de enfermería que guíen el cuidado diario resulta indispensable. El presente trabajo presenta el desarrollo de la teoría de rango medio Modelo de rol materno en la alimentación del lactante, mediante el método de derivación teórica de Fawcett. Este modelo tiene como objetivo explicar cómo características maternas y del lactante influyen en el rol materno de alimentación y estado nutricional del hijo en el primer año de vida. Mediante este modelo se ofrece sustento teórico para la investigación e intervenciones de enfermería enfocadas a prevenir problemas de nutrición en el lactante.

  10. Debates: sobre el rol de la escuela y de los educadores de adultos en las cárceles

    Directory of Open Access Journals (Sweden)

    Francisco José Scarfó

    Full Text Available RESUMEN: Cuando se realiza una caracterización mínima del ejercicio del rol docente en la educación pública en las cárceles, importa basarse en el rol profesional pedagógico emergente y en particular sobre la adaptabilidad y/o contextualidad de la educación en tanto derecho humano que constituye la clave para pensar a la formación y la selección de los/as educadores en una articulación de una serie de componentes fundamentales, destacando dos de éstos: las condiciones de su apropiación desde la perspectiva de quien aprende (en nuestro caso jóvenes o adultos privados de su libertad y las características de las situaciones específicas en que tendrá lugar la enseñanza, en función de los contextos concretos de actuación (o sea en la cárcel.

  11. Nectandra Rol. ex Rottb. (Lauraceae no Mato Grosso do Sul, Brasil Nectandra Rol. ex Rottb. (Lauraceae in Mato Grosso do Sul State, Brazil

    Directory of Open Access Journals (Sweden)

    Flávio Macedo Alves

    2009-03-01

    Full Text Available O trabalho apresenta o estudo taxonômico das espécies do gênero Nectandra no Mato Grosso do Sul, Brasil. Baseados na análise morfológica dos espécimes coletados em diferentes regiões do Estado são confirmados oito espécies de Nectandra: N. amazonum Nees, N. cissiflora Nees, N. cuspidata Nees, N. falcifolia (Nees J.A. Castigl. ex Mart. Crov. & Piccinini, N. gardneri Meisn., N. hihua (Ruiz & Pav. Rohwer, N. megapotamica (Spreng. Mez e N. psammophila Nees. É fornecida uma chave de identificação para as espécies e apresentados descrições morfológicas, dados de distribuição geográfica, habitat, aspectos fenológicos, comentários taxonômicos e ilustrações para cada espécie.This paper presents the taxonomic study of the species of Nectandra from Mato Grosso do Sul. Eight species of Nectandra were identified through the morphological analyses of specimens collected in different regions from the State: N. amazonum Nees, N. cissiflora Nees, N. cuspidata Nees, N. falcifolia (Nees J.A. Castigl. ex Mart. Crov. & Piccinini, N. gardneri Meisn., N. hihua (Ruiz & Pav. Rohwer, N. megapotamica (Spreng. Mez and N. psammophila Nees. Identification key, morphological descriptions, geographic distribution, habitat, fenologic aspect, taxonomic comments, and illustrations are presented.

  12. Rol del estado en los ensayos clínicos Role of government in clinical trials

    Directory of Open Access Journals (Sweden)

    Pilar Mazzetti

    2012-12-01

    Full Text Available La regulación de los ensayos clínicos por el Estado es un proceso en constante cambio y adecuación, cuyo reto actual consiste en salvaguardar la seguridad de los participantes y equilibrar la carga administrativa. El desarrollo y la regulación de los ensayos clínicos en los distintos países varían según la realidad, el contexto, su ejecución nacional o multinacional, condicionando que la regulación puramente nacional resulte insuficiente y se precise conocer parte de la regulación internacional. El objetivo de esta publicación es mostrar una visión global del rol de Estado en la regulación de los ensayos clínicos en distintas realidades. Para ello, se ha realizado una revisión de la regulación en la Unión Europea, Estados Unidos de Norteamérica y algunos países de Latinoamérica, para llegar finalmente al Perú. La tendencia actual en la regulación de los ensayos clínicos, se caracteriza por el incremento en los estándares de calidad, el garantizar la seguridad de los participantes, promover la transparencia, la disminución de los procesos burocráticos y el fortalecimiento de los comités de ética, en el marco de procesos democráticos abiertos, que convoquen e integren a todos los interesados en procesos dinámicos basados en el conocimiento actual y los cambios que se suceden. El reto actual es promover el desarrollo de ensayos clínicos desde el Estado (universidades, centros de investigación, institutos especializados, hospitales, etc. para los aspectos que el país necesita, incluidos medicamentos huérfanos, enfermedades prevalentes y abandonadas, y el uso terapéutico de los principios activos originarios.The regulation of clinical trials by the Government is a process of continuous change and adaptation, current challenge is to ensure the safety of participants and get balance of administrative procedures. Development and regulation of clinical trials in different countries vary according to the situation

  13. Kerkliedere met ’n lae gebruiksfrekwensie: Speel die melodie ’n rol?

    Directory of Open Access Journals (Sweden)

    Jacoba H. van Rooy

    2014-08-01

    Full Text Available Enige kerklike liedboek bevat liedere wat dikwels tydens eredienste gesing word en liedere wat min of nooit gesing word nie. Hierdie toedrag van sake kan aan ’n verskeidenheid faktore toegeskryf word. In sommige gevalle mag die inhoud van ’n lied dalk liturgies nie maklik bruikbaar wees nie. Daar is egter gevalle waar die inhoud liturgies bruikbaar is, maar waar die liedere steeds nie dikwels in die liturgie gebruik word nie. Ook hiervoor kan daar verskillende redes wees. Soms word die melodieë van die liedere as die rede aangevoer waarom dit weinig gesing word. Hierdie artikel ondersoek die aangeleentheid met verwysing na ’n aantal liedere wat min gebruik word volgens die bevindings van ’n empiriese ondersoek na die gebruik van liedere in die Gereformeerde Kerke in Suid-Afrika (GKSA. Die artikel gee aandag aan die vereistes vir en die funksie van kerkliedere as agtergrond vir die beoordeling van ’n aantal liedere. Die resultate van die empiriese ondersoek is vir die keuse van die melodieë gebruik wat in hierdie artikel bespreek word. Die melodieë van die betrokke vyf liedere word bespreek en geëvalueer om te bepaal of dit moontlik ’n rol kan speel in die lae gebruiksfrekwensie daarvan. Die artikel toon aan dat die melodie wel ’n belangrike aanduider in die lae gebruiksfrekwensie van die liedere is. Hymns used infrequently: Does the melody play a role? Any hymn book contains hymns that are sung frequently during services and other hymns that are sung very rarely or even never. This fact can be ascribed to a number of reasons. In some instances the contents of the hymn are such that it does not fit easily into the liturgy of a service. There are, however, hymns that could easily be used in the liturgy, but are used infrequently. Different reasons can account for this. The melodies of such hymns are often blamed for this state of affairs. This article explores this issue with respect to a number of hymns that are utilised

  14. Rol del profesional de enfermería en la investigación clínica

    Directory of Open Access Journals (Sweden)

    Sandra Juliana Zarate

    2011-12-01

    Full Text Available Introducción: El Rol de la enfermera en investigación clínica, se enfrenta a grandes avances científicos, por lo cual cobra cada vez mayor importancia la gestión que realiza en los procesos de selección, evaluación y seguimiento de los participantes en estudio, buscando mantener grandes estándares de calidad en la ejecución, hasta llegar a su culminación exitosa. Materiales y Métodos: Artículo de reflexión sobre un análisis crítico, que describe detalladamente el rol de la enfermera en investigación clínica. Resultados: Este articulo tiene como finalidad, demostrar el amplio campo de acción de las enfermeras en el área de investigación, de la cual se resalta la gran labor y el avance en la actualidad,es preciso remontarnos a la segunda mitad del siglo XIX, cuando se profesionaliza la enfermería y de ahí surge la necesidad de la primera enfermera que se preocupó por la investigación, Florence Nightingale, quien dedicó parte de su trabajo a la investigación de enfermería. Discusión y Conclusiones: Los profesionales de enfermería en investigación clínica, tiene la posibilidad de aplicar cuidados con autodeterminación,pues poseen bases científicas adquiridas en la academia que emplea en los diferentes estudios clínicos, por otra parte su desarrollo personal y las habilidades innatas son vitales a la hora de relacionarse con el equipo de trabajo y los participantes, lo anterior fundamenta la disciplina de la profesión en un alto grado de evidencia científica que se implementa en cuidados basados en la evidencia. (Rev Cuid 2011; 2(2: 246-49Palabras clave: Investigación Clínica, Rol de la Enfermera, Gestión en Salud. (Fuente: DeCS BIREME.

  15. El rol de las familias españolas con hijos con discapacidad en la inclusión educativa. Una mirada histórico-normativa

    OpenAIRE

    Fran J. García-García; Manuel López-Torrijo

    2016-01-01

    García-García, F. J. y López-Torrijo, M. (2016): “El rol de las familias españolas con hijos con discapacidad en la inclusión educativa. Una mirada histórico-normativa”. Revista Española de Discapacidad, 4 (2): 219-233.

  16. Effects of silicon (Si) on arsenic (As) accumulation and speciation in rice (Oryza sativa L.) genotypes with different radial oxygen loss (ROL).

    Science.gov (United States)

    Wu, Chuan; Zou, Qi; Xue, Shengguo; Mo, Jingyu; Pan, Weisong; Lou, Laiqing; Wong, Ming Hung

    2015-11-01

    Arsenic (As) contamination of paddy soils has adversely affected the health of millions of people those consuming rice for staple food. The present study was aimed at investigating the effects of silicon (Si) fertilization on As uptake, speciation in rice plants with different radial oxygen loss (ROL). Six genotypes were planted in pot soils under greenhouse conditions until late tillering state. The results showed that the rates of ROL were higher in hybrid rice genotypes varying from 19.76 to 27 μmol O2 g(-1) root dry weight h(-1) than that in conventional indica rice genotypes varying from 9.55 to 15.41 μmol O2 g(-1) root dry weight h(-1). Si addition significantly increased straw biomass (peffects on root biomass. Si fertilization significantly reduced shoot and root total As concentrations (p<0.001) in six genotypes grown in 40 mg As/kg soil. Si addition decreased the inorganic As in shoots of 'Xiangfengyou-9' with lower ROL and 'Xiangwanxian-12' with higher ROL by 31% and 25% respectively and had the tendency to increase DMA concentrations. It is potential to reduce As contamination of rice efficiently by combining Si fertilization and selecting genotypes with high radial oxygen loss. Copyright © 2015 Elsevier Ltd. All rights reserved.

  17. Mise au point sur l’analyse de la régiodistribution en acides gras des triacylglycérols

    Directory of Open Access Journals (Sweden)

    Turon Fabrice

    2003-03-01

    Full Text Available Dans la première partie de cette mise au point sont examinées les deux méthodes usuelles (enzymatique et chimique pour l’analyse de la régiodistribution en acides gras des triacylglycérols. Le but est notamment de montrer les limites de leurs applications ainsi que les problèmes posés par la mise en œuvre des modes opératoires. Dans la deuxième partie de cet exposé, une nouvelle méthode d’analyse de la régiodistribution à partir des α‐monoacylglycérols obtenus par dégradation des triacylglycérols avec un réactif de Grignard est examinée à la lumière des résultats d’une étude théorique faite sur un triacylglycérol modèle.

  18. El rol de las familias españolas con hijos con discapacidad en la inclusión educativa. Una mirada histórico-normativa

    Directory of Open Access Journals (Sweden)

    Fran J. García-García

    2016-12-01

    Full Text Available García-García, F. J. y López-Torrijo, M. (2016: “El rol de las familias españolas con hijos con discapacidad en la inclusión educativa. Una mirada histórico-normativa”. Revista Española de Discapacidad, 4 (2: 219-233.

  19. Minimum Description Length Shape and Appearance Models

    DEFF Research Database (Denmark)

    Thodberg, Hans Henrik

    2003-01-01

    The Minimum Description Length (MDL) approach to shape modelling is reviewed. It solves the point correspondence problem of selecting points on shapes defined as curves so that the points correspond across a data set. An efficient numerical implementation is presented and made available as open s...

  20. Rol de la Ortodoncia y la Ortopedia en el tratamiento de pacientes con traumatismos a nivel dentoalveolar. Reporte de casos

    Directory of Open Access Journals (Sweden)

    Grassi-A

    2014-01-01

    Full Text Available Se presentan 2 casos clínicos de pacientes con traumatismos dentarios que avalan la importancia de un abordaje multidisciplinario a fin de optimizar su resolución. Se resalta el rol del ortodoncista y el ortopedista dento-máxilo-facial en la prevención, atención adecuada de las diferentes situaciones que pueden presentarse en el transcurso de un traumatismo, y rehabilitación en las diferentes etapas de la dentición, optimizando resultados mediante una fluida interrelación con otros profesionales. Se enfatiza la importancia de que, en la etapa diagnóstica y de planificación de los tratamientos, el profesional sea capaz de detectar secuelas de posibles traumatismos, que de pasar inadvertidos pueden complicar la resolución del caso

  1. Mastitis Olgularında Virusların Rolü "The roles of Viruses in Mastitis"

    OpenAIRE

    ALPAY, Gizem; YEŞİLBAĞ, Kadir

    2009-01-01

    Bu derlemede özellikle sığır mastitis olgularının etiyolojisinde virusların rolleri irdelenmiştir. Viruslar sığır mastitis olgularında hem hazırlayıcı hem de primer etiyolojik ajan olarak rol oynayabilirler. Bovine herpesvirus 2, vaccinia virus, sığır çiçeği virusu, yalancı sığır çiçeği virusu, vesicular stomatitis virusu, şap hastalığı virusu ve bovine papillomavirus memede lezyon oluşturarak memenin doğal savunma mekanizmasını sekteye uğratırlar. Bovine herpesvirus 1, bovine viral diarrhoea...

  2. Mujer campesina y trabajo. Su rol en la actividad productiva y reproductiva de los Valles Calchaquíes

    Directory of Open Access Journals (Sweden)

    Graciela F. Torres

    2004-01-01

    Full Text Available En este artículo se aborda el trabajo femenino en la sociedad campesina del departamento San Carlos, ubicado en los Valles Calchaquíes, en jurisdicción de la provincia de Salta. Se considera la percepción social del rol de la mujer en vinculación al trabajo, y en consecuencia se realiza un inventario de todas las tareas consideradas femeninas, reproductivas y productivas. También se indaga acerca del concepto de trabajo y se analiza su contribución a la supervivencia del grupo doméstico, es decir su importancia como agente económico capaz de obtener y generar ingresos tanto monetarios como en bienes y productos. En la investigación se utilizó metodología cualitativa y las informantes fueron mujeres adultas con un grupo familiar a cargo

  3. EL ROL DEL TURISMO EN LA CONSOLIDACIÓN DE LA MARCA PAÍS DE ARGENTINA

    Directory of Open Access Journals (Sweden)

    Echeverri Cañas, Lina María

    2013-01-01

    Full Text Available La globalización ha sido el punto de partida frente a la creciente competencia que se ha evidenciado en los últimos años entre los territorios (regiones, ciudades y países. Especialmente los países han adoptado e implementado estrategias de diferenciación para estimular el turismo y la inversión económica. El turismo se ha consolidado como una de las principales fuentes de divisas para los países latinoamericanos. Este artículo analiza el rol del turismo en el proceso de consolidación de la marca país de Argentina.

  4. Convertirse en madre durante la adolescencia: activación del rol materno en el control prenatal

    OpenAIRE

    Claudia Maria Moreno Mojica; Nancy Patricia Mesa Chaparro; Zorayda Pérez Cipagauta; Diana Paola Vargas Fonseca

    2015-01-01

    Introducción: Las adolescentes gestantes constituyen un grupo poblacional vulnerable,  con limitación en la construcción de la identidad personal frente a la materna e  imposibilidad de constitución  de una familia estable  que  afectan su calidad de vida y la del hijo por nacer. El objetivo del artículo es dar a conocer el alcance que tiene la aplicación de una estrategia de cuidado de enfermería que promovió el cuidado integral de la adolescente gestante en  la activación del rol materno du...

  5. El rol de la emoción en la comprensión de textos narrativos

    Directory of Open Access Journals (Sweden)

    Felipe Vallejo Reyes

    2008-11-01

    Full Text Available El presente trabajo hace una revisión de teorías que explican el rol que cumple la organización emocional del lector al momento de comprender un texto narrativo. Para ello se analizan teorías psicolingüísticas de comprensión de textos, con especial énfasis en la estructura del significado emocional del texto. A partir de lo anterior se sientan las bases para proponer un modelo de comprensión emocional que es aplicado a un texto narrativo. Se analizan las perspectivas metodológicas y el objeto a fin de considerar las posibilidades heurísticas de una línea de investigación en este campo.

  6. Las dificultades de sentir: el rol de las emociones en la estigmatización del VIH/SIDA

    Science.gov (United States)

    MARZÁN-RODRÍGUEZ, Melissa; VARAS-DÍAZ, Nelson

    2009-01-01

    Resumen El Virus de Inmunodeficiencia Humana (VIH) y el Síndrome de Inmunodeficiencia Adquirida (SIDA) han sido motivo de estigmatización para las personas que viven con ellos. Esta estigmatización se ha estudiado consecuentemente desde la perspectiva de opiniones de agentes estigmatizantes. Estas opiniones han obviado sistemáticamente el rol de las emociones en el proceso de estigmatización. Llevamos a cabo este estudio con el propósito de identificar el rol de las emociones en el proceso de estigmatización de las personas que viven con el virus (PVVS) por parte de profesionales de la salud. Para lograr este objetivo utilizamos un diseño exploratorio y cualitativo en el cual utilizamos la técnica de entrevistas semiestructuradas a profundidad. La muestra estuvo compuesta por 80 profesionales de la salud y estudiantes de las siguientes especialidades: psicología, trabajo social, medicina y enfermería. Los resultados reflejaron la existencia de emociones asociadas al VIH/SIDA tales como pena, lástima, compasión, asco, fobia y miedo entre los/as profesionales y estudiantes que participaron. Las personas participantes evidenciaron la necesidad de controlar sus emociones al interactuar con PVVS. Los resultados apuntan a la necesidad de explorar aquellos factores que mediatizan las emociones, tales como el contexto social en que se manifiestan y ante quiénes se revelan, para lograr entender a cabalidad el estigma que rodea al VIH/SIDA. PMID:20212916

  7. Numerical Optimization in Microfluidics

    DEFF Research Database (Denmark)

    Jensen, Kristian Ejlebjærg

    2017-01-01

    Numerical modelling can illuminate the working mechanism and limitations of microfluidic devices. Such insights are useful in their own right, but one can take advantage of numerical modelling in a systematic way using numerical optimization. In this chapter we will discuss when and how numerical...... optimization is best used....

  8. Optical trapping at low numerical aperture

    NARCIS (Netherlands)

    Stallinga, S.

    2011-01-01

    A theory of optical trapping at low Numerical Aperture (NA) is presented. The theory offers an analytical description of the competition between the stabilizing gradient and destabilizing scattering force. The trade-off can be characterized by a single dimensionless trapping parameter, which

  9. Description logics of context

    CSIR Research Space (South Africa)

    Klarman, S

    2013-05-01

    Full Text Available We introduce Description Logics of Context (DLCs) - an extension of Description Logics (DLs) for context-based reasoning. Our approach descends from J. McCarthy's tradition of treating contexts as formal objects over which one can quantify...

  10. Physics 3204. Course Description.

    Science.gov (United States)

    Newfoundland and Labrador Dept. of Education.

    A description of the physics 3204 course in Newfoundland and Labrador is provided. The description includes: (1) statement of purpose, including general objectives of science education; (2) a list of six course objectives; (3) course content for units on sound, light, optical instruments, electrostatics, current electricity, Michael Faraday and…

  11. Descriptive set theory

    CERN Document Server

    Moschovakis, YN

    1987-01-01

    Now available in paperback, this monograph is a self-contained exposition of the main results and methods of descriptive set theory. It develops all the necessary background material from logic and recursion theory, and treats both classical descriptive set theory and the effective theory developed by logicians.

  12. On Meanings and Descriptions

    Directory of Open Access Journals (Sweden)

    Mieke Bal

    1981-09-01

    Full Text Available Although descriptive passages would appear to be of marginal importance in narrative texts, they are, in fact, of both logical and semantic necessity. Narratology, therefore, must take these segments into account. In this article, I shall survey the present situation in this field and compare rival points of view. I shall also offer several suggestions for analyzing descriptions. The following topics will be discussed: the nature of description as a specific type of discourse which makes it recognizable as such; the internal structure of description; the place and function of descriptions in the text as a whole. In the latter section, the semantic impact of descriptions in the overall meaning of narrative texts will be accounted for. This article is intended as a contribution to the theory of description as a part of narratology. It also has a didactic purpose, since it proposes a model for the analysis of texts which can be used for systematic text-study, both in a historical and a comparative perspective.

  13. Agrobacterium-Mediated Transformation of Tomato with rolB Gene Results in Enhancement of Fruit Quality and Foliar Resistance against Fungal Pathogens

    OpenAIRE

    Arshad, Waheed; Haq, Ihsan-ul-; Waheed, Mohammad Tahir; Mysore, Kirankumar S.; Mirza, Bushra

    2014-01-01

    Tomato (Solanum lycopersicum L.) is the second most important cultivated crop next to potato, worldwide. Tomato serves as an important source of antioxidants in human diet. Alternaria solani and Fusarium oxysporum cause early blight and vascular wilt of tomato, respectively, resulting in severe crop losses. The foremost objective of the present study was to generate transgenic tomato plants with rolB gene and evaluate its effect on plant morphology, nutritional contents, yield and resistance ...

  14. Status of numerical relativity

    Indian Academy of Sciences (India)

    Keywords. Numerical relativity; gravitational waves; black hole; neutron star. Abstract. I describe the current status of numerical relativity from my personal point of view. Here, I focus mainly on explaining the numerical implementations necessary for simulating general relativistic phenomena such as the merger of compact ...

  15. Museum audio description

    OpenAIRE

    Martins, Cláudia Susana Nunes

    2011-01-01

    Audio description for the blind and visually impaired has been around since people have described what is seen. Throughout time, it has evolved and developed within different media, starting with reality and daily life, moving into the cinema and television, then across other performing arts, museums and art galleries, and public places. Thus, academics and entertainment providers have developed a growing interest for audio description, especially in what concerns the best methods and strateg...

  16. Estrés de rol, implicación con el trabajo y Burnout en soldados profesionales españoles

    Directory of Open Access Journals (Sweden)

    Blanca López-Araújo

    2008-01-01

    Full Text Available Este estudio analiza la relación entre el estrés de rol y el burnout y el papel modulador de la implicación con el trabajo en una muestra de 779 soldados profesionales del ejército español. Los resultados encontrados muestran que el conflicto, la ambigüedad de rol y las dos dimensiones de la implicación con el trabajo se relacionan significativamente y en la dirección esperada con los tres síntomas del burnout. Además, la identificación psicológica con el trabajo reduce el burnout, mientras que, al contrario, los sentimientos de deber-obligación lo potencian. Sin embargo, en contra de lo esperado, la implicación con el trabajo no es una variable moduladora de la relación entre el estrés de rol y el burnout

  17. El liderazgo y el clima motivacional del entrenador como antecedentes de la cohesión y el rol percibido en futbolistas semiprofesionales

    Directory of Open Access Journals (Sweden)

    Francisco Miguel Leo Marcos

    2013-01-01

    Full Text Available El principal objetivo del estudio es aplicar un modelo teórico para explicar cómo el tipo de liderazgo ejercido por los entrenadores puede influir en el clima motivacional, y cómo estos factores contextuales pueden determinar la cohesión grupal y la insatisfacción con el rol de los jugadores. Los participantes fueron 377 futbolistas que participaban en el grupo XIV de la Liga Nacional Española de Tercera División, los cuales rellenaron diferentes instrumentos para valorar el liderazgo, el clima motivacional, la cohesión y la insatisfacción con el rol. Los resultados señalan principalmente que los liderazgos que fomentan el refuerzo positivo presentan una predicción sobre el clima que implica a la tarea del entrenador y, en cambio, el liderazgo autocrático predice el clima que implica al ego. A su vez, el clima que implica a la tarea presenta una predicción positiva sobre la cohesión de equipo y el clima que implica al ego sobre la insatisfacción con el rol. La principal conclusión que se puede extraer del estudio es que los entrenadores deberán adoptar conductas de liderazgo positivo para fomentar un clima adecuado en el grupo y, de esta manera, aumentar la atracción e integración entre los componentes del equipo.

  18. Transformation of Lactuca sativa L. with rol C gene results in increased antioxidant potential and enhanced analgesic, anti-inflammatory and antidepressant activities in vivo.

    Science.gov (United States)

    Ismail, Hammad; Dilshad, Erum; Waheed, Mohammad Tahir; Sajid, Moniba; Kayani, Waqas Khan; Mirza, Bushra

    2016-12-01

    Lettuce is an important edible crop which possesses various medicinal properties. In this study Lactuca sativa L. (cv Grand Rapids) was transformed by Agrobacterium-mediated transformation with rol C gene. Transgene integration and expression was confirmed through PCR and semiquantitative RT-PCR. The transformed extracts were evaluated for their in vitro antioxidant and in vivo analgesic, anti-inflammatory and antidepressant activities in rats. The transformed plants showed 53-98 % increase in total phenolic and 45-58 % increase in total flavonoid contents compared with untransformed plants. Results of total reducing power and total antioxidant capacity exhibited 90-118 and 61-75 % increase in transformed plants, respectively. In contrast to control, DPPH, lipid peroxidation and DNA protection assay showed up to 37, 20 and 50 % enhancement in transformed plants, respectively. The extracts showed similar but significant enhancement behavior in hot plate analgesic and carrageenan-induced hind paw edema test. The transformed extracts showed 72.1 and 78.5 % increase for analgesic and anti-inflammatory activities, respectively. The transformants of rol C gene exhibited prominent antidepressant activity with 64-73 % increase compared with untransformed plants. In conclusion, the present work suggests that transformation with rol C gene can be used to generate lettuce with enhanced medicinally important properties, such as antioxidant, analgesic, anti-inflammatory and antidepressant potential.

  19. Kükürt Dioksitin (SO2 Şaraptaki Rolü ve Önemi

    Directory of Open Access Journals (Sweden)

    Arif Akman

    2015-02-01

    Full Text Available Şarabın yapılmasında, olgunlaştırılmasında kaplarda ya da şişelerde saklanmasında, şarap hastalık ve kusurlarının önlenmesinde kükürt dioksitin çok büyük rolü ve vazgeçilemeyecek önemi vardır. Denebilir ki, kükürt dioksitsiz şarabı olgunlaştırmak ve saklamak mümkün değildir. Kükürt dioksit kullanmadan, en geniş bir iyimserlikle, şarap içilemeyecek kadar bozulmasa bile, rengi, görünüşü ve tadı kötü bir durum alır. Şu halde kükürt dioksit kullanmadan değil şöyle böyle bir kalite şarabı, yine eli yüzü düzgün ve tat bakımından en mütevazı ve müsamahalı istekleri bile karşılayabilecek bir şarap yapılamaz

  20. Deterioro y conservación de los bosques del Nevado de Toluca y el rol de los actores locales

    Directory of Open Access Journals (Sweden)

    Ángel Rolando Endara Agramont

    2016-01-01

    Full Text Available El Área de Protección de Flora y Fauna Nevado de Toluca presenta una constante fragmentación de sus bosques. El objetivo de la investigación fue identificar los procesos de deterioro de sus bosques y el rol de los actores locales en su conservación. Se utilizaron los sistemas de información geográfica como base para la generación de mapas temáticos, además de la aplicación de un diagrama de flujo que define los problemas del bosque y otro que los describe y analiza para la búsqueda de soluciones. Los resultados muestran que los principales factores que inciden en el deterioro son incendios forestales, tala inmoderada, plagas y enfermedades. Finalmente se plantean estrategias y escenarios de manejo de los bosques a partir de la articulación de los actores locales.

  1. El juego de rol: aportes de la educación universitaria a la cultura de la paz

    Directory of Open Access Journals (Sweden)

    Liliam Palomeque-Forero

    2016-06-01

    Full Text Available El objetivo principal del presente trabajo fue analizar la aceptación de un juego de rol diseñado como estrategia de aula para discutir un tema sociocientífico en un curso universitario de química general. Los estudiantes participaron en un juego con cinco roles asignados aleatoriamente; durante el ejercicio, debieron asumir diferentes posiciones y puntos de vista y exponer sus ideas sobre el tema: “cultivos transgénicos”. La aceptación de la actividad se evaluó con una encuesta en línea que incluyó escogencia múltiple y preguntas abiertas. Los participantes acogieron positivamente la estrategia de aula y descubrieron por sí mismos habilidades personales necesarias para afrontar conversaciones en las que surgen diversas explicaciones, justificaciones y opiniones, que pueden resultar contrarias a las propias. Este tipo de ejercicios puede ser de gran utilidad como parte del proceso de formación en el ámbito universitario, a propósito de la actual necesidad y pertinencia de una cultura basada en el diálogo y la aceptación de la diversidad de pensamiento

  2. Trabajando con tecnologías y afrontando el tecnoestrés: el rol de las creencias de eficacia

    Directory of Open Access Journals (Sweden)

    MARISA SALANOVA SORIA

    2003-01-01

    Full Text Available El objetivo del presente trabajo es describir qué es y cómo se produce el proceso de tecnoestrés en el marco mas global del 'Modelo Demandas-Recursos', con especial énfasis en describir los principales resultados de la investigación reciente sobre el rol amortiguador que tienen las creencias de eficacia en todo este proceso. Para ello se revisa en primer lugar el concepto de tecnoestrés ofreciendo una definición comprehensiva del constructo. En segundo lugar, se contextualiza el tecnoestrés en el marco más global de los Modelos Demandas- Recursos, apuntando los principales hallazgos en la investigación sobre las características del trabajo con Tecnologías de la Información y Comunicación (TIC. El artículo finaliza revisando la investigación reciente sobre la autoeficacia como un recurso 'amortiguador' del proceso de tecnoestrés.

  3. Minimum Description Length Shape and Appearance Models

    DEFF Research Database (Denmark)

    Thodberg, Hans Henrik

    2003-01-01

    The Minimum Description Length (MDL) approach to shape modelling is reviewed. It solves the point correspondence problem of selecting points on shapes defined as curves so that the points correspond across a data set. An efficient numerical implementation is presented and made available as open s...... source Matlab code. The problems with the early MDL approaches are discussed. Finally the MDL approach is extended to an MDL Appearance Model, which is proposed as a means to perform unsupervised image segmentation....

  4. Expression of self-complementary hairpin RNA under the control of the rolC promoter confers systemic disease resistance to plum pox virus without preventing local infection.

    Science.gov (United States)

    Pandolfini, Tiziana; Molesini, Barbara; Avesani, Linda; Spena, Angelo; Polverari, Annalisa

    2003-06-25

    Homology-dependent selective degradation of RNA, or post-transcriptional gene silencing (PTGS), is involved in several biological phenomena, including adaptative defense mechanisms against plant viruses. Small interfering RNAs mediate the selective degradation of target RNA by guiding a multicomponent RNAse. Expression of self-complementary hairpin RNAs within two complementary regions separated by an intron elicits PTGS with high efficiency. Plum pox virus (PPV) is the etiological agent of sharka disease in Drupaceae, although it can also be transmitted to herbaceous species (e.g. Nicotiana benthamiana). Once inside the plant, PPV is transmitted via plasmodesmata from cell to cell, and at longer distances, via phloem. The rolC promoter drives expression in phloem cells. RolC expression is absent in both epidermal and mesophyll cells. The aim of the present study was to confer systemic disease resistance without preventing local viral infection. In the ihprolC-PP197 gene (intron hair pin rolC PPV 197), a 197 bp sequence homologous to the PPV RNA genome (from base 134 to 330) was placed as two inverted repeats separated by the DNA sequence of the rolA intron. This hairpin construct is under the control of the rolC promoter.N. benthamiana plants transgenic for the ihprolC-PP197 gene contain siRNAs homologous to the 197 bp sequence. The transgenic progeny of ihprolC-PP197 plants are resistant to PPV systemic infection. Local infection is unaffected. Most (80%) transgenic plants are virus free and symptomless. Some plants (20%) contain virus in uninoculated apical leaves; however they show only mild symptoms of leaf mottling. PPV systemic resistance cosegregates with the ihprolC-PP197 transgene and was observed in progeny plants of all independent transgenic lines analyzed. SiRNAs of 23-25 nt homologous to the PPV sequence used in the ihprolC-PP197 construct were detected in transgenic plants before and after inoculation. Transitivity of siRNAs was observed in

  5. Expression of self-complementary hairpin RNA under the control of the rolC promoter confers systemic disease resistance to plum pox virus without preventing local infection

    Directory of Open Access Journals (Sweden)

    Spena Angelo

    2003-06-01

    Full Text Available Abstract Background Homology-dependent selective degradation of RNA, or post-transcriptional gene silencing (PTGS, is involved in several biological phenomena, including adaptative defense mechanisms against plant viruses. Small interfering RNAs mediate the selective degradation of target RNA by guiding a multicomponent RNAse. Expression of self-complementary hairpin RNAs within two complementary regions separated by an intron elicits PTGS with high efficiency. Plum pox virus (PPV is the etiological agent of sharka disease in Drupaceae, although it can also be transmitted to herbaceous species (e.g. Nicotiana benthamiana. Once inside the plant, PPV is transmitted via plasmodesmata from cell to cell, and at longer distances, via phloem. The rolC promoter drives expression in phloem cells. RolC expression is absent in both epidermal and mesophyll cells. The aim of the present study was to confer systemic disease resistance without preventing local viral infection. Results In the ihprolC-PP197 gene (intron hair pin rolC PPV 197, a 197 bp sequence homologous to the PPV RNA genome (from base 134 to 330 was placed as two inverted repeats separated by the DNA sequence of the rolA intron. This hairpin construct is under the control of the rolC promoter.N. benthamiana plants transgenic for the ihprolC-PP197 gene contain siRNAs homologous to the 197 bp sequence. The transgenic progeny of ihprolC-PP197 plants are resistant to PPV systemic infection. Local infection is unaffected. Most (80% transgenic plants are virus free and symptomless. Some plants (20% contain virus in uninoculated apical leaves; however they show only mild symptoms of leaf mottling. PPV systemic resistance cosegregates with the ihprolC-PP197 transgene and was observed in progeny plants of all independent transgenic lines analyzed. SiRNAs of 23–25 nt homologous to the PPV sequence used in the ihprolC-PP197 construct were detected in transgenic plants before and after inoculation

  6. Reliability of semiology description.

    Science.gov (United States)

    Heo, Jae-Hyeok; Kim, Dong Wook; Lee, Seo-Young; Cho, Jinwhan; Lee, Sang-Kun; Nam, Hyunwoo

    2008-01-01

    Seizure semiology is important for classifying patients' epilepsy. Physicians usually get most of the seizure information from observers though there have been few reports on the reliability of the observers' description. This study aims at determining the reliability of observers' description of the semiology. We included 92 patients who had their habitual seizures recorded during video-EEG monitoring. We compared the semiology described by the observers with that recorded on the videotape, and reviewed which characteristics of the observers affected the reliability of their reported data. The classification of seizures and the individual components of the semiology based only on the observer-description was somewhat discordant compared with the findings from the videotape (correct classification, 85%). The descriptions of some ictal behaviors such as oroalimentary automatism, tonic/dystonic limb posturing, and head versions were relatively accurate, but those of motionless staring and hand automatism were less accurate. The specified directions by the observers were relatively correct. The accuracy of the description was related to the educational level of the observers. Much of the information described by well-educated observers is reliable. However, every physician should keep in mind the limitations of this information and use this information cautiously.

  7. Large scale experiments as a tool for numerical model development

    DEFF Research Database (Denmark)

    Kirkegaard, Jens; Hansen, Erik Asp; Fuchs, Jesper

    2003-01-01

    for improvement of the reliability of physical model results. This paper demonstrates by examples that numerical modelling benefits in various ways from experimental studies (in large and small laboratory facilities). The examples range from very general hydrodynamic descriptions of wave phenomena to specific......Experimental modelling is an important tool for study of hydrodynamic phenomena. The applicability of experiments can be expanded by the use of numerical models and experiments are important for documentation of the validity of numerical tools. In other cases numerical tools can be applied...... hydrodynamic interaction with structures. The examples also show that numerical model development benefits from international co-operation and sharing of high quality results....

  8. Olkiluoto site description 2011

    International Nuclear Information System (INIS)

    2012-12-01

    This fourth version of the Olkiluoto Site Report, produced by the OMTF (Olkiluoto Modelling Task Force), updates the Olkiluoto Site Report 2008 with the data and knowledge obtained up to December 2010. A descriptive model of the site (the Site Descriptive Model, SDM), i.e. a model describing the geological and hydrogeological structure of the site, properties of the bedrock and the groundwater and its flow, and the associated interacting processes and mechanisms. The SDM is divided into six parts: surface system, geology, rock mechanics, hydrogeology, hydrogeochemistry and transport properties

  9. CRAC2 model description

    International Nuclear Information System (INIS)

    Ritchie, L.T.; Alpert, D.J.; Burke, R.P.; Johnson, J.D.; Ostmeyer, R.M.; Aldrich, D.C.; Blond, R.M.

    1984-03-01

    The CRAC2 computer code is a revised version of CRAC (Calculation of Reactor Accident Consequences) which was developed for the Reactor Safety Study. This document provides an overview of the CRAC2 code and a description of each of the models used. Significant improvements incorporated into CRAC2 include an improved weather sequence sampling technique, a new evacuation model, and new output capabilities. In addition, refinements have been made to the atmospheric transport and deposition model. Details of the modeling differences between CRAC2 and CRAC are emphasized in the model descriptions

  10. Olkiluoto site description 2011

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-12-15

    This fourth version of the Olkiluoto Site Report, produced by the OMTF (Olkiluoto Modelling Task Force), updates the Olkiluoto Site Report 2008 with the data and knowledge obtained up to December 2010. A descriptive model of the site (the Site Descriptive Model, SDM), i.e. a model describing the geological and hydrogeological structure of the site, properties of the bedrock and the groundwater and its flow, and the associated interacting processes and mechanisms. The SDM is divided into six parts: surface system, geology, rock mechanics, hydrogeology, hydrogeochemistry and transport properties.

  11. Numerical methods using Matlab

    CERN Document Server

    Lindfield, George

    2012-01-01

    Numerical Methods using MATLAB, 3e, is an extensive reference offering hundreds of useful and important numerical algorithms that can be implemented into MATLAB for a graphical interpretation to help researchers analyze a particular outcome. Many worked examples are given together with exercises and solutions to illustrate how numerical methods can be used to study problems that have applications in the biosciences, chaos, optimization, engineering and science across the board. Numerical Methods using MATLAB, 3e, is an extensive reference offering hundreds of use

  12. Masonry constructions mechanical models and numerical applications

    CERN Document Server

    Lucchesi, Massimiliano; Padovani, Cristina

    2008-01-01

    Numerical methods for the structural analysis of masonry constructions can be of great value in assessing the safety of artistically important masonry buildings and optimizing potential operations of maintenance and strengthening in terms of their cost-effectiveness, architectural impact and static effectiveness. This monograph firstly provides a detailed description of the constitutive equation of masonry-like materials, clearly setting out its most important features. It then goes on to provide a numerical procedure to solve the equilibrium problem of masonry solids. A large portion of the w

  13. Generalizing: The descriptive struggle

    Directory of Open Access Journals (Sweden)

    Barney G. Glaser, Ph.D.; Hon Ph.D.

    2006-11-01

    Full Text Available The literature is not kind to the use of descriptive generalizations. Authors struggle and struggle to find and rationalize a way to use them and then fail in spite of trying a myriad of work-arounds. And then we have Lincoln and Guba’s famous statement: “The only generalization is: there is no generalization” in referring to qualitative research. (op cit, p. 110 They are referring to routine QDA yielding extensive descriptions, but which tacitly include conceptual generalizations without any real thought of knowledge about them. In this chapter I wish to explore this struggle for the purpose of explaining that the various contra arguments to using descriptive generalizations DO NOT apply to the ease of using conceptual generalizations yielded in SGT and especially FGT. I will not argue for the use of descriptive generalization. I agree with Lincoln and Guba with respect to QDA, “the only generalization is: there is no generalization.” It is up to the QDA methodologists, of whom there are many; to continue the struggle and I wish them well.

  14. Tore Supra: technical description

    International Nuclear Information System (INIS)

    1985-08-01

    This report is aimed, after a brief recall of physics and technologic perspectives of Tore Supra, at giving a detailed description of the basic machine; details of each component are defined. Volume 1 is specifically concerned with the general aspects of Tore Supra and the toroidal field system [fr

  15. Systematic Description of Sensors

    NARCIS (Netherlands)

    Regtien, Paulus P.L.; Sydenham, Peter H.; Thorn, Richard

    A sensor performs the exchange of information (thus energy) from one domain to another and therefore it operates on the interface between different physical domains. Several frameworks have been developed for a systematic description of sensors. Basically, they are based on either of two different

  16. Fractal description of fractures

    International Nuclear Information System (INIS)

    Lung, C.W.

    1991-06-01

    Recent studies on the fractal description of fractures are reviewed. Some problems on this subject are discussed. It seems hopeful to use the fractal dimension as a parameter for quantitative fractography and to apply fractal structures to the development of high toughness materials. (author). 28 refs, 7 figs

  17. MCFire model technical description

    Science.gov (United States)

    David R. Conklin; James M. Lenihan; Dominique Bachelet; Ronald P. Neilson; John B. Kim

    2016-01-01

    MCFire is a computer program that simulates the occurrence and effects of wildfire on natural vegetation, as a submodel within the MC1 dynamic global vegetation model. This report is a technical description of the algorithms and parameter values used in MCFire, intended to encapsulate its design and features a higher level that is more conceptual than the level...

  18. Dry Cleaning, Course Description.

    Science.gov (United States)

    Briscoe, Albert J.; Anderson, Floyd L.

    This course description was developed by educators for use at the Work Opportunity Center which was established to teach high school dropouts and/or hard-core unemployed youth. The ultimate objectives of this course are to prepare students for employment in dry cleaning occupations and to assist them in completing their high school graduation…

  19. Business Education, Course Description.

    Science.gov (United States)

    O'Neill, Robert; Anderson, Floyd L.

    This course description was developed by educators for use at the Work Opportunity Center in teaching high school dropouts and hard-core unemployed youth. The ultimate objectives of the business education curriculum at the Center are to prepare students for employment in clerical occupations and to assist them in completing their high school…

  20. Communications, Course Description.

    Science.gov (United States)

    Vickstrom, Sandra E.; Anderson, Floyd L.

    This course description was developed by educators for use at the Work Opportunity Center which was established to teach high school dropouts and/or hardcore unemployed youth. The ultimate objectives of this curriculum are to develop communicative skills necessary for social interaction and to help the student complete high school graduation…

  1. Reading, Course Description.

    Science.gov (United States)

    Decker, George; Anderson, Floyd L.

    This course description was developed by educators for use at the Work Opportunity Center which was established to teach high school dropouts and hard-core unemployed youth. The objectives of this reading curriculum are to develop skills of retarded readers, further develop skills of adequate readers, and develop an appreciation for reading.…

  2. Updating action domain descriptions.

    Science.gov (United States)

    Eiter, Thomas; Erdem, Esra; Fink, Michael; Senko, Ján

    2010-10-01

    Incorporating new information into a knowledge base is an important problem which has been widely investigated. In this paper, we study this problem in a formal framework for reasoning about actions and change. In this framework, action domains are described in an action language whose semantics is based on the notion of causality. Unlike the formalisms considered in the related work, this language allows straightforward representation of non-deterministic effects and indirect effects of (possibly concurrent) actions, as well as state constraints; therefore, the updates can be more general than elementary statements. The expressivity of this formalism allows us to study the update of an action domain description with a more general approach compared to related work. First of all, we consider the update of an action description with respect to further criteria, for instance, by ensuring that the updated description entails some observations, assertions, or general domain properties that constitute further constraints that are not expressible in an action description in general. Moreover, our framework allows us to discriminate amongst alternative updates of action domain descriptions and to single out a most preferable one, based on a given preference relation possibly dependent on the specified criteria. We study semantic and computational aspects of the update problem, and establish basic properties of updates as well as a decomposition theorem that gives rise to a divide and conquer approach to updating action descriptions under certain conditions. Furthermore, we study the computational complexity of decision problems around computing solutions, both for the generic setting and for two particular preference relations, viz. set-inclusion and weight-based preference. While deciding the existence of solutions and recognizing solutions are PSPACE-complete problems in general, the problems fall back into the polynomial hierarchy under restrictions on the additional

  3. SISTEMA JURÍDICO, TEORÍA DEL DERECHO Y ROL DE LOS JUECES: LAS NOVEDADES DEL NEOCONSTITUCIONALISMO

    Directory of Open Access Journals (Sweden)

    Alfonso Santiago

    2008-01-01

    Full Text Available En este trabajo se intenta hacer una descripción y valoración de algunos de los principales contenidos del neoconstitucionalismo. El origen de esta nueva corriente jurídica se sitúa en el marco del derecho constitucional europeo de posguerra y de la labor desarrollada por los distintos tribunales constitucionales, en especial el alemán. Luego, se identifican tres aspectos centrales que caracterizan al neoconstitucionalismo: las transformaciones del ordenamiento jurídico como consecuencia del valor normativo que se atribuye a la Constitución; la nueva teoría del derecho que acompaña y promueve este fenómeno; y el rol institucional que, de acuerdo con el nuevo paradigma jurídico, comienzan a desarrollar los jueces y tribunales constitucionales, con el consiguiente surgimiento de novedosas posturas y doctrinas jurisprudenciales. Posteriormente, se analizan las posibilidades y los riesgos que plantea el modelo del neoconstitucionalismo. En primer término, se sostiene que el desarrollo de esta corriente puede contribuir notablemente a la vigencia efectiva de los derechos humanos mediante la activa tarea de los jueces. Como posibles riesgos se señalan dos: una concepción excesivamente individualista y relativista de los derechos humanos, y la posibilidad de una extralimitación judicial que afecte el normal funcionamiento del sistema institucional. Finalmente, se da cuenta de cómo algunas de las tesis neoconstitucionalistas han sido recepcionadas en el derecho constitucional argentino, especialmente a través de la reforma constitucional de 1994 y en algunos de los fallos más recientes de la Corte Suprema de ese país.

  4. Influencia de la hipoxia sobre el metabolismo óseo: rol central del factor inducible por hipoxia

    Directory of Open Access Journals (Sweden)

    Elías Ernesto Aguirre Siancas

    2013-10-01

    Full Text Available El conocimiento de la influencia de la hipoxia sobre la fisiología humana dio un salto cualitativo cuando se descubrió al factor inducible por hipoxia (HIF. Las vías moleculares que este factor de transcripción regula son variadas y complejas, cuya comprensión continuamente se sigue profundizando. En la fisiología y en la fisiopatología del tejido óseo se desarrollan varios procesos característicos, como la osificación, la remodelación y la reparación. La disminución en la disposición de oxígeno determina la estabilización del HIF en muchos grupos celulares, entre los cuales destacan las células del linaje osteogénico. Este factor regula la expresión de múltiples genes, siendo, quizás, el más importante el que codifica al factor de crecimiento vascular del endotelio (VEGF, debido a su decisiva implicancia en el proceso de osteogénesis, directamente activando a las células osteoblásticas o indirectamente mediante su potente acción angiogénica. En este artículo, se hace una revisión actualizada sobre el rol central del HIF sobre la fisiología ósea, detallando la regulación de las principales vías moleculares dependientes de dicho factor de transcripción.

  5. La corresponsabilidad educativa y social en el acoso e intimidación escolar. El rol del educador social

    Directory of Open Access Journals (Sweden)

    Carmen Carmen Orte Socias

    2008-01-01

    Full Text Available Este artículo se centra en los comportamientos que adopta el alumnado espectador de situaciones de bulling con sus iguales. La profundización en las causas de la escasa intervención de los espectadores en estas situaciones está siendo objeto de interés en la investigación. Se pretende formarlos para que adopten un rol más activo, implicándose en comportamientos prosociales de ayuda a sus compañeros víctimas de bulling. La corresponsabilidad como filosofía es una característica que debe tener la intervención. Forma parte de los planteamientos basados en la ayuda a los iguales, en los que el educador social puede tener un papel muy importante. ---------------------------------------------------------------------------- This paper contains a brief review of the theoretical reference models that explain the causes of bulling at school and specifically focuses on the behaviour of students looking on during these peer-bullying situations. Interest is growing in research into the causes of bystanders´ infrequent intervention in these situations. The goal is for students to be educated to take a more active role and get involved in pro-social behaviours to help schoolmates who are victims of bullying. These schoolmates who are victims of bullying. This research should be characterised by co-responsability as a philosophy, since it is an element of intervention approaches based on peer help, in which the social educator has an important role to play.

  6. Numerical Modelling of Streams

    DEFF Research Database (Denmark)

    Vestergaard, Kristian

    In recent years there has been a sharp increase in the use of numerical water quality models. Numeric water quality modeling can be divided into three steps: Hydrodynamic modeling for the determination of stream flow and water levels. Modelling of transport and dispersion of a conservative...

  7. Status of numerical relativity

    Indian Academy of Sciences (India)

    Abstract. I describe the current status of numerical relativity from my personal point of view. Here, I focus mainly on explaining the numerical implementations necessary for simulating general relativistic phenomena such as the merger of compact binaries and stellar collapse, emphasizing the well-developed current status of ...

  8. Status of numerical relativity

    Indian Academy of Sciences (India)

    I describe the current status of numerical relativity from my personal point of view. Here, I focus mainly on explaining the numerical implementations necessary for simulating general relativistic phenomena such as the merger of compact binaries and stellar collapse, emphasizing the well-developed current status of such ...

  9. Descriptive sensory evaluations

    DEFF Research Database (Denmark)

    Dehlholm, Christian

    in projective mapping frame geometry and restrictions on the reported semantics. Two rapid descriptive evaluation techniques were proposed to represent a consensus evaluation. One of the approaches, ‘consensus attribute rating’ (CAR), allows a group of assessors to rate products on a list of pre......-selected attributes. The other approach, ‘consensus Napping’, allows a group of assessors to project products according to an agreed consensus placement on a paper sheet. Evaluations were performed either by groups of experienced sensory assessors or by product experts. Compared with conventional profiling techniques......, the evaluations showed significant correlations between some product configurations, but no consistent and systematic similarities. On average, product expert groups had less in common with the reference profiles than the trained panellist groups and the semantic descriptions of products varied to a large degree...

  10. Descriptive sensory evaluations

    DEFF Research Database (Denmark)

    Dehlholm, Christian

    A recent trend in descriptive sensory evaluation methodology has been the application of rapid evaluation techniques. The ease in use makes the techniques extremely easy to implement by industry and university environments. Thus, one might not consider validity in the choice of method. The overall...... in projective mapping frame geometry and restrictions on the reported semantics. Two rapid descriptive evaluation techniques were proposed to represent a consensus evaluation. One of the approaches, ‘consensus attribute rating’ (CAR), allows a group of assessors to rate products on a list of pre...... for all groups. Hence, consensus profiling with untrained assessors should not be used for the purpose of considering consistency between panels, while assessors trained in the product may perform more reliably. As for projective mapping variations of frame geometry, evaluations in a rectangular...

  11. Resource Description Framework (RDF)

    OpenAIRE

    Gibbins, Nicholas; Shadbolt, Nigel

    2009-01-01

    The Resource Description Framework (RDF) is the standard knowledge representation language for the Semantic Web, an evolution of the World Wide Web that aims to provide a well-founded infrastructure for publishing, sharing and querying structured data. This article provides an introduction to RDF and its related vocabulary definition language RDF Schema, and explains its relationship with the OWL Web Ontology Language. Finally, it provides an overview of the historical development of RDF and ...

  12. TMACS system description

    International Nuclear Information System (INIS)

    Scaief, C.C.

    1995-01-01

    This document provides a description of the Tank Monitor and Control System (TMACS). It is intended as an introduction for those persons unfamiliar with the system as well as a reference document for the users, maintenance personnel, and system designers. In addition to describing the system, the document outlines the associated drawing documentation, provides maintenance and spare parts information, and discusses other TMACS documents that provide additional detail

  13. XML Diagnostics Description Standard

    International Nuclear Information System (INIS)

    Neto, A.; Fernandes, H.; Varandas, C.; Lister, J.; Yonekawa, I.

    2006-01-01

    A standard for the self-description of fusion plasma diagnostics will be presented, based on the Extensible Markup Language (XML). The motivation is to maintain and organise the information on all the components of a laboratory experiment, from the hardware to the access security, to save time and money when problems arises. Since there is no existing standard to organise this kind of information, every Association stores and organises each experiment in different ways. This can lead to severe problems when the organisation schema is poorly documented or written in national languages. The exchange of scientists, researchers and engineers between laboratories is a common practice nowadays. Sometimes they have to install new diagnostics or to update existing ones and frequently they lose a great deal of time trying to understand the currently installed system. The most common problems are: no documentation available; the person who understands it has left; documentation written in the national language. Standardisation is the key to solving all the problems mentioned. From the commercial information on the diagnostic (component supplier; component price) to the hardware description (component specifications; drawings) to the operation of the equipment (finite state machines) through change control (who changed what and when) and internationalisation (information at least in the native language and in English), a common XML schema will be proposed. This paper will also discuss an extension of these ideas to the self-description of ITER plant systems, since the problems will be identical. (author)

  14. Numerical distance protection

    CERN Document Server

    Ziegler, Gerhard

    2011-01-01

    Distance protection provides the basis for network protection in transmission systems and meshed distribution systems. This book covers the fundamentals of distance protection and the special features of numerical technology. The emphasis is placed on the application of numerical distance relays in distribution and transmission systems.This book is aimed at students and engineers who wish to familiarise themselves with the subject of power system protection, as well as the experienced user, entering the area of numerical distance protection. Furthermore it serves as a reference guide for s

  15. Numerical problems in physics

    CERN Document Server

    Singh, Devraj

    2015-01-01

    Numerical Problems in Physics, Volume 1 is intended to serve the need of the students pursuing graduate and post graduate courses in universities with Physics and Materials Science as subject including those appearing in engineering, medical, and civil services entrance examinations. KEY FEATURES: * 29 chapters on Optics, Wave & Oscillations, Electromagnetic Field Theory, Solid State Physics & Modern Physics * 540 solved numerical problems of various universities and ompetitive examinations * 523 multiple choice questions for quick and clear understanding of subject matter * 567 unsolved numerical problems for grasping concepts of the various topic in Physics * 49 Figures for understanding problems and concept

  16. El negocio de la producción de semillas mejoradas y su rol en el proceso de privatización de la agricultura mexicana

    OpenAIRE

    Gilberto Aboites; Francisco Martínez; Gabriel Torres

    1999-01-01

    Este artículo rastrea los orígenes de la producción industrial de semillas mejoradas y enfatiza su rol en la privatización de la agricultura mexicana. El argumento establece que la modernización de la agricultura no se puede concebir como una acción homogénea y siempre progresista, como si se hubiera podido decretar de un solo golpe y para siempre, sino que ha sufrido diversos cambios, adecuaciones y retrocesos. En las conclusiones se resalta el alto grado de ...

  17. ACTIVIDAD NEURONAL CORTICAL Y PERIFERICA EN EL SISTEMA AUDITIVO DE MAMIFEROS MODULADA POR LA ATENCION: ¿UN POSIBLE ROL DEL SISTEMA EFERENTE?

    OpenAIRE

    DELANO REYES, PAUL HINCKLEY

    2006-01-01

    El sistema eferente auditivo inerva directamente a las células receptoras de la cóclea, las células ciliadas externas. A pesar de la relevancia anatómica de las vías córticofugales del sistema auditivo, su rol fisiológico aún es incierto. Una de las funciones que se le atribuye es participar en actividades que requieren atención selectiva. El objetivo principal de esta tesis fue estudiar la modulación que ejerce la atencion sobre las respuestas aferentes a nivel central y periférico en el sis...

  18. El liderazgo y el clima motivacional del entrenador como antecedentes de la cohesión y el rol percibido en futbolistas semiprofesionales

    OpenAIRE

    Francisco Miguel Leo Marcos; Pedro Antonio S\\u00E1nchez-Miguel; David S\\u00E1nchez-Oliva; Diana Amado Alonso; Tom\\u00E1s Garc\\u00EDa Calvo

    2013-01-01

    El principal objetivo del estudio es aplicar un modelo teórico para explicar cómo el tipo de liderazgo ejercido por los entrenadores puede influir en el clima motivacional, y cómo estos factores contextuales pueden determinar la cohesión grupal y la insatisfacción con el rol de los jugadores. Los participantes fueron 377 futbolistas que participaban en el grupo XIV de la Liga Nacional Española de Tercera División, los cuales rellenaron diferentes instrumentos para valorar el liderazgo, el cli...

  19. Estresores de puesto, de rol y de carrera y bienestar psicológico: el papel del afrontamiento de acción directa y paliativo

    OpenAIRE

    Fortes-Ferreira, Lina; González-Morales, M. Glória; Martín, Isabel

    2003-01-01

    El presente estudio pretende analizar el papel del afrontamiento de acción directa y paliativo en la relación entre estresores laborales (estresor de puesto , de rol y de carrera) y bienestar psicológico, asi como las posibles interacciones entre estos dos tipos de afrontamiento, en una muestra de 464 empleados de empleados de organizaciones financieras españolas. Los análisis de regresiones jerárquicas muestran que el afrontamiento de acción directa predice el bienestar. Las i...

  20. Rol de la pareja en el proceso de rehabilitación de personas con discapacidad física por situaciones de guerra

    OpenAIRE

    Rincón Díaz, Maritza; Restrepo de Giraldo, Lucía

    2010-01-01

    Objetivo: este artículo estudia el rol de la pareja en el proceso de rehabilitación de uno de sus miembros con lesión medular, producida por herida en actos del servicio como integrante del Ejército de Colombia. Método. se realizó un estudio cualitativo de tipo descriptivo, no estructurado con una única unidad muestral. Se contó con la participación voluntaria de una familia de estrato socioeconómico medio-bajo (esposos y dos hijos). Se evaluaron tres aspectos con base en el modelo sistémico ...

  1. Adaptación a la crisis vital del envejecimiento : rol de los estilos de personalidad y de la apreciación cognitiva en adultas mayores

    OpenAIRE

    Urquijo, Sebastián; Monchietti, Alicia; Krzemien, Deisy

    2008-01-01

    Persiste el debate acerca de los factores que influyen en el afrontamiento a situaciones críticas. Este trabajo propone, primero, evaluar las estrategias de afrontamiento utilizadas por adultas mayores frente a situaciones críticas del envejecimiento y, segundo, aportar a dicho debate, examinando el rol de los estilos de personalidad y de la apreciación cognitiva en la predicción del uso de estrategias de afrontamiento en la vejez. Se aplicó una batería de instrumentos a una muestra de 212 pa...

  2. PERCEPCION DE INSEGURIDAD LABORAL Y SU RELACION CON CONDUCTAS DE CIUDADANIA CORPORATIVA Y DESEMPELO ASOCIADO AL ROL: UNA EVALUACION DE FACTORES MODERADORES Y MEDIADORES EN TRABAJADORES

    OpenAIRE

    LOPEZ BOHLE, SERGIO ANDRES

    2014-01-01

    El propósito de la investigación es evaluar la relación entre la percepción de inseguridad laboral y el desempeño asociado al rol, las conductas de ciudadanía corporativa dirigidas a la organización y las conductas de ciudadanía corporativa dirigidas a los individuos, considerando los efectos moderadores de la atribución de justicia en los procedimientos y la percepción de apoyo del supervisor, y el efecto de la brecha del contrato psicológico como variable mediadora. La muestr...

  3. ANALISIS DEL ROL DE LA DEFENSORIA DEL PUEBLO EN LA APLICACION DE LOS DERECHO DE LA TERCERA EDAD EN LA CIUDAD DE CUCUTA

    OpenAIRE

    Mora Pallares, Juan Carlos; Rincon Florez, Fredy Alexander; Sayago Alzamora, Carlos Armando

    2006-01-01

    El presente trabajo abarca todo lo concerniente a la situación de las personas de la tercera edad del país, donde se analiza la situación de los derechos humanos, en cuanto a la atención condiciones laborales, salud, bienestar en general; finalizando con las conclusiones y recomendaciones. El objeto del trabajo consistió en analizar el Rol de la Defensoría del Pueblo para que se cumplan los Derechos de estas personas.

  4. El rol de los centros educativos en la prevención del abandono escolar : una aproximación desde la perspectiva micropolítica

    OpenAIRE

    Tarabini-Castellani, Aina

    2015-01-01

    España y Cataluña presentan unos niveles muy elevados de abandono escolar prematuro (AEP) que se sitúan muy lejos de los objetivos establecidos por la estrategia europea Education and Training 2020. Dada la relevancia del fenómeno, se han desarrollado numerosas políticas para abordar el fenómeno y avanzar en su prevención y combate. Los centros de educación secundaria no son agentes neutros en la adopción de dichas políticas, sino que tienen un rol activo en su implementación y recontextualiz...

  5. Rol del óxido nítrico en modelos experimentales propuestos para inducir inflamación gástrica e intestinal en ratas

    OpenAIRE

    Angulo Herrera, Pedro

    2008-01-01

    Actualmente se vienen usando varios modelos que utilizan al etanol (EtOH) y la indometacina (Indo) para inducir inflamación gástrica e intestinal en forma experimental. Con el objeto de determinar cuál es el rol del óxido nítrico (NO) en la inflamación gástrica e intestinal, hemos utilizado como donadores de NO al nitrito de sodio (NIT), nitroprusiato de sodio (NPS) y metronidazol (MET); y como inhibidor inespecífico de la sintasa del NO a la NG-nitro-L-arginina-metil éster (LNAME) y el azul ...

  6. Remarks on numerical semigroups

    International Nuclear Information System (INIS)

    Torres, F.

    1995-12-01

    We extend results on Weierstrass semigroups at ramified points of double covering of curves to any numerical semigroup whose genus is large enough. As an application we strengthen the properties concerning Weierstrass weights state in [To]. (author). 25 refs

  7. Introductory numerical analysis

    CERN Document Server

    Pettofrezzo, Anthony J

    2006-01-01

    Written for undergraduates who require a familiarity with the principles behind numerical analysis, this classical treatment encompasses finite differences, least squares theory, and harmonic analysis. Over 70 examples and 280 exercises. 1967 edition.

  8. Introduction to numerical analysis

    CERN Document Server

    Hildebrand, F B

    1987-01-01

    Well-known, respected introduction, updated to integrate concepts and procedures associated with computers. Computation, approximation, interpolation, numerical differentiation and integration, smoothing of data, other topics in lucid presentation. Includes 150 additional problems in this edition. Bibliography.

  9. Numerical semigroups and applications

    CERN Document Server

    Assi, Abdallah

    2016-01-01

    This work presents applications of numerical semigroups in Algebraic Geometry, Number Theory, and Coding Theory. Background on numerical semigroups is presented in the first two chapters, which introduce basic notation and fundamental concepts and irreducible numerical semigroups. The focus is in particular on free semigroups, which are irreducible; semigroups associated with planar curves are of this kind. The authors also introduce semigroups associated with irreducible meromorphic series, and show how these are used in order to present the properties of planar curves. Invariants of non-unique factorizations for numerical semigroups are also studied. These invariants are computationally accessible in this setting, and thus this monograph can be used as an introduction to Factorization Theory. Since factorizations and divisibility are strongly connected, the authors show some applications to AG Codes in the final section. The book will be of value for undergraduate students (especially those at a higher leve...

  10. Static Analysis Numerical Algorithms

    Science.gov (United States)

    2016-04-01

    STATIC ANALYSIS OF NUMERICAL ALGORITHMS KESTREL TECHNOLOGY, LLC APRIL 2016 FINAL TECHNICAL REPORT APPROVED FOR PUBLIC RELEASE; DISTRIBUTION...3. DATES COVERED (From - To) NOV 2013 – NOV 2015 4. TITLE AND SUBTITLE STATIC ANALYSIS OF NUMERICAL ALGORITHMS 5a. CONTRACT NUMBER FA8750-14-C...and Honeywell Aerospace Advanced Technology to combine model-based development of complex avionics control software with static analysis of the

  11. Numerical computations with GPUs

    CERN Document Server

    Kindratenko, Volodymyr

    2014-01-01

    This book brings together research on numerical methods adapted for Graphics Processing Units (GPUs). It explains recent efforts to adapt classic numerical methods, including solution of linear equations and FFT, for massively parallel GPU architectures. This volume consolidates recent research and adaptations, covering widely used methods that are at the core of many scientific and engineering computations. Each chapter is written by authors working on a specific group of methods; these leading experts provide mathematical background, parallel algorithms and implementation details leading to

  12. Numerical transducer modelling

    DEFF Research Database (Denmark)

    Cutanda, Vicente

    1999-01-01

    Numerical modelling is of importance for the design, improvement and study of acoustic transducers such as microphones and accelerometers. Techniques like the boundary element method and the finite element method are the most common supplement to the traditional empirical and analytical approaches...... errors and instabilities in the computations of numerical solutions. An investigation to deal with this narrow-gap problem has been carried out....

  13. Numerical Modeling of Ablation Heat Transfer

    Science.gov (United States)

    Ewing, Mark E.; Laker, Travis S.; Walker, David T.

    2013-01-01

    A unique numerical method has been developed for solving one-dimensional ablation heat transfer problems. This paper provides a comprehensive description of the method, along with detailed derivations of the governing equations. This methodology supports solutions for traditional ablation modeling including such effects as heat transfer, material decomposition, pyrolysis gas permeation and heat exchange, and thermochemical surface erosion. The numerical scheme utilizes a control-volume approach with a variable grid to account for surface movement. This method directly supports implementation of nontraditional models such as material swelling and mechanical erosion, extending capabilities for modeling complex ablation phenomena. Verifications of the numerical implementation are provided using analytical solutions, code comparisons, and the method of manufactured solutions. These verifications are used to demonstrate solution accuracy and proper error convergence rates. A simple demonstration of a mechanical erosion (spallation) model is also provided to illustrate the unique capabilities of the method.

  14. Tense Operators on Spaces of Numerical Events

    Science.gov (United States)

    Chajda, Ivan; Länger, Helmut

    2014-10-01

    Spaces of numerical events were introduced for the sake to establish a propositional logic of physical phenomena. Since physical phenomena are variable in time, it is a natural task to develop temporal logic for this description. Hence we adopt the concept of tense operators used in classical propositional logic and in several sorts of non-classical one (e. g. Lukasiewicz many-valued logic, intuitionistic logic etc.). It turns out that the full set of states on a given space of numerical events can serve as a time scale if it is equipped with a suitable relation of time preference. A construction of tense operators is developed and a certain representation is derived. Finally, tense operators on spaces of numerical events whose elements have only the values 0 or 1 are characterized.

  15. Propriétés amphiphiles des monolaurates de polyglycérol : application à la préparation de microémulsions à base d’esters gras

    Directory of Open Access Journals (Sweden)

    Chailloux Nelly

    2003-09-01

    Full Text Available Les esters de polyglycérol des acides gras sont des tensioactifs non ioniques, d’origine entièrement végétale, et totalement biodégradables. Le comportement de phase des systèmes eau-huile-monolaurate de polyglycérol a été étudié par le concept du Hydrophilic Lipophilic Deviation. Ce concept a permis de caractériser les tensioactifs de la famille du monolaurate de polyglycérol C 12 G j et d’établir une classification de diverses huiles de type ester selon leur valeur de EACN (Equivalent Alkane Carbon Number.

  16. Surgimiento, dinámica y rol de las plantineras en el aglomerado hortícola de La Plata

    Directory of Open Access Journals (Sweden)

    Matías García

    2016-12-01

    Full Text Available RESUMEN La caracterización de la actual dinámica del Cinturón Hortícola Platense tendría un mejor ajuste si se interpreta desde el enfoque de economías de aglomeración. Así, una actividad que se caracterizó históricamente por su producción atomizada y descentralizada, ahora muestra una concentración espacial y cercana articulación con los eslabones de aprovisionamiento de insumos y comercialización. El objetivo del trabajo es desarrollar la influencia y dependencia de un servicio existente en la zona hortícola platense: las plantineras. Se busca identificar las razones de su surgimiento, su evolución y actual importancia y dependencia. También describir su interrelación con las semilleras y agronomías. Finalmente, se caracteriza el rol de las plantineras en el aglomerado de empresas que conforma la horticultura platense. Se concluye que las plantineras pueden considerarse un caso de economía externa, causa y consecuencia a su vez del incremento de la competitividad en este espacio productivo. ABSTRACT The current dynamics of La Plata’s Horticultural Belt seem to fit better if interpreted from the agglomeration economies perspective. Thus, an activity historically characterized by its fragmented and decentralized production nowadays shows a spatial concentration and close coordination with the links in supply of inputs and marketing. The aim of this work is to develop the influence and dependence on an existing service in La Plata’s horticultural zone: the nursery garden. It seeks to identify the reasons for its emergence, evolution and current importance and dependence. Also to describe their interrelationships with seed companies and agrochemical shops. Finally, the nursery garden role in horticultural agglomerate of La Platais characterized. It is concluded that nursery garden could be considered a case of external economy, cause and consequence of increasing competitiveness in the productive space.

  17. Aspectos celulares y moleculares de la nefropatía diabética, rol del VEGF-A

    Directory of Open Access Journals (Sweden)

    Katherine Carranza

    2015-03-01

    Full Text Available La prevalencia de diabetes mellitus aumentó en el último siglo y se estima que el 45% de los pacientes, no estarían diagnosticados. En Sudamérica la prevalencia de diabetes y de enfermedad renal crónica (ERC incrementó, existiendo gran disparidad entre los países respecto al acceso a diálisis. En Ecuador es una de las principales causas de mortalidad, principalmente en las provincias ubicadas en la costa del océano Pacífico. La mayor causa aislada de ingreso a diálisis es la nefropatía diabética (ND. Aun utilizando las mejores opciones terapéuticas para la ND, el riesgo residual de proteinuria y de ERC terminal permanece elevado. En esta revisión describimos la importancia del problema en el mundo y en nuestra región. Analizamos estudios moleculares y celulares relevantes que indican la crucial importancia de eventos glomerulares en el desarrollo y en la evolución de la ND y en la insulinorresistencia. Incluimos conceptos anatómicos, fisiopatológicos y clínicos básicos, desarrollando especial énfasis en el rol de factores angiogénicos como el factor de crecimiento vascular endotelial (VEGF-A y su relación con el receptor de insulina, la sintasa endotelial de óxido nítrico-óxido nítrico (eNOS y las angiopoietinas. En el transcurso del texto proponemos diversas vías, que a nuestro entender tienen potencial terapéutico. Profundizar en el estudio del VEGF-A y las angiopoietinas, el estado de VEGF resistencia glomerular, la relación del receptor 2 de VEGF/ nefrina, VEGF/receptores de insulina/nefrina, la relación VEGF/eNOS-ON a nivel glomerular podría aportar soluciones al acuciante problema de la ND en el mundo y generar nuevas alternativas de tratamiento.

  18. Okulda Diyalog: Okul Yönetiminin Rolü / Dialogue at School: The Role of the School Administration

    Directory of Open Access Journals (Sweden)

    Rüveyde İŞGİNÖZ

    2012-06-01

    Full Text Available Bu araştırmanın amacı, okulda diyalog sürecini oluşturma ve geliştirmede okul yönetiminin rolünü resmi ortaöğretim kurumlarına görev yapan okul yöneticilerinin görüşlerine dayalı olarak ortaya koymaktır. Araştırmanın çalışma grubunu Tekirdağ ili Çorlu ilçesinde 2011-2012 eğitim-öğretim yılında Milli Eğitim Bakanlığı’na bağlı bulunan 3 resmi ortaöğretim okulunda görev yapan 12 okul yöneticisi oluşturmuştur. Araştırma verileri, yüz yüze görüşme tekniğiyle, yarı yapılandırılmış bir görüşme formu kullanılarak toplanmıştır. Araştırmada elde edilen veriler içerik analizi tekniği ile çözümlenmiştir. Bu araştırmadan elde edilen bulgular şöyle özetlenebilir; araştırmaya katılan okul yöneticileri, okulda diyaloğun önemli ve gerekli olduğuna inanmaktadırlar ve bu konuda eksiklikleri olduğunu kabul etmektedirler. Yöneticiler okulda diyaloğun eğitim-öğretime birçok katkısının olacağını düşünmektedirler. Yöneticiler ayrıca, okulda ve toplumda diyalog sorunlarının olduğunu, bu sorunları çözmek ve diyalog sürecini geliştirmek için okul yöneticilerine, öğretmenlere, velilere ve öğrencilere önemli bazı görevler düştüğünü belirtmişlerdir.

  19. El rol de los cuidadores intrafamiliares adultos y su desempeño en la sociedad actual

    Directory of Open Access Journals (Sweden)

    Peña Aristizábal Sara Lucila

    1996-12-01

    Full Text Available

    The work of intrafamily takecare shows excess tire, frustration, dislike, stereotype. The professional nurse requieres to know his or her characteristics and conflicts to definy the right strategies more than a roll correspond to a necessary function and to exert by organization the work of intrafamily takecare. It must be recognized the self government of the subject of takecare during the process of interactivic learning. The focus must be recognized a social pouring or altruist and that individual or egoist. The take care rebuild their own identity in the way of origen -blike together- condicioning their selfesteem to fall or success while the object of takecare does an old learning, observating and modeling the behaviour of the takecare to determine that and not rights; the health institutions don't care to this aspect in systematic way, and is priority under the focus preventive to know about phenomenons to affect the personality structure and the interpersonal relations to the inside of the nucleus of family organized.

    La labor del cuidador intrafamiliar suele mostrar excesivo desgaste, frustración, displacer y estereotipia. El profesional de la enfermería requiere de conocer sus características y conflictos para definir las estrategias adecuadas. Más que un rol, corresponde a una función, necesaria y ejercida por un organismo, la labor del C.I. Se debe reconocer la autonomía del sujeto de cuidado en el proceso de aprendizaje interactivo. El enfoque debe reconocer una vertiente social, o altruista y aquella individual o egoísta. El C.I. reconstruye su propia identidad, en sentido origen-convivencia, condicionando su autoestima al fracaso o éxito, en tanto que el sujeto de cuidado, hace un aprendizaje vicario, observacional y de modelamiento, de las conductas del cuidador para determinar aquellas viables y no acertadas. Las instituciones de salud no se ocupan de este aspecto en forma sistemática, siendo prioritario bajo el

  20. MCO Monitoring activity description

    International Nuclear Information System (INIS)

    SEXTON, R.A.

    1998-01-01

    Spent Nuclear Fuel remaining from Hanford's N-Reactor operations in the 1970s has been stored under water in the K-Reactor Basins. This fuel will be repackaged, dried and stored in a new facility in the 200E Area. The safety basis for this process of retrieval, drying, and interim storage of the spent fuel has been established. The monitoring of MCOS in dry storage is a currently identified issue in the SNF Project. This plan outlines the key elements of the proposed monitoring activity. Other fuel stored in the K-Reactor Basins, including SPR fuel, will have other monitoring considerations and is not addressed by this activity description

  1. Description logic rules

    CERN Document Server

    Krötzsch, M

    2010-01-01

    Ontological modelling today is applied in many areas of science and technology,including the Semantic Web. The W3C standard OWL defines one of the most important ontology languages based on the semantics of description logics. An alternative is to use rule languages in knowledge modelling, as proposed in the W3C's RIF standard. So far, it has often been unclear how to combine both technologies without sacrificing essential computational properties. This book explains this problem and presents new solutions that have recently been proposed. Extensive introductory chapters provide the necessary

  2. Numerical Calculation of Transport Based on the Drift-Kinetic Equation for Plasmas in General Toroidal Magnetic Geometry: Numerical Methods

    International Nuclear Information System (INIS)

    Reynolds, J. M.; Lopez-Bruna, D.

    2009-01-01

    In this report we continue with the description of a newly developed numerical method to solve the drift kinetic equation for ions and electrons in toroidal plasmas. Several numerical aspects, already outlined in a previous report [Informes Tecnicos Ciemat 1165, mayo 2009], will be treated now in more detail. Aside from discussing the method in the context of other existing codes, various aspects will be now explained from the viewpoint of numerical methods: the way to solve convection equations, the adopted boundary conditions, the real-space meshing procedures along with a new software developed to build them, and some additional questions related with the parallelization and the numerical integration. (Author) 16 refs

  3. Aproximaciones al rol de los planificadores regionales de la Iniciativa para la Integración de la Infraestructura Regional Suramericana (IIRSA

    Directory of Open Access Journals (Sweden)

    Damián Lobos

    2015-09-01

    Full Text Available En el presente artículo se analiza el rol central que vienen cumpliendo los planificadores regionales alineados con la visión del regionalismo abierto cepalino en la actual estrategia de inserción de América Latina en el capitalismo global, en vista de su sujeción a los imperativos mundiales del capital transnacionalizado. Para ello se enfoca la atención en los instrumentos metodológicos de la Planificación Territorial Indicativa (PTI de la Iniciativa para la Integración de la Infraestructura Regional Suramericana (IIRSA, entendiendo a esta última como institución reproductora del regionalismo abierto de la CEPAL desde su propuesta general de integración física regional. Se exponen cuatro secciones donde se desarrollan la emergencia del regionalismo abierto cepalino como estrategia espacial del Estado y la relevancia de IIRSA en torno a la reproducción del mismo, para luego analizar el rol que desempeñan en la misma los planificadores regionales desde la creación de consenso por medio de la PTI, hasta la creación de territorialidades particulares.

  4. El rol de la empresa transnacional extractiva de petróleo en la consulta previa con las comunidades indígenas: La experiencia en Colombia

    Directory of Open Access Journals (Sweden)

    Yadira Castillo Meneses

    2012-01-01

    Full Text Available Este artículo pretende reflejar el rol asumido por la empresa transnacional extractiva de petróleo en el marco de las consultas previas con las comunidades indígenas en Colombia, así como sus implicaciones. Sugiero tres puntos centrales: 1. Las empresas sustituyen el rol del Estado, y en esa medida pueden ser la primera fuente de conocimiento para las comunidades indígenas en relación con lo que supone y conlleva una consulta previa. 2. Gran parte de los compromisos asumidos por las empresas con la comunidad indígena están ligados a razones reputacionales y a un interés de contrarrestar la imagen de ser violadores de derechos humanos. 3. La consulta no está siendo realizada en el momento establecido por la Convención 169 de la OIT, lo cual tiene grandes consecuencias. La investigación consiste en una aproximación sociojurídica a un caso concreto, en la cual se integran las visiones de varias ETN, los entes del Estado involucrados en la consulta y el resguardo indígena Unuma del Vichada.

  5. Formas microfinancieras comunitarias, identificación, tipificación y diagnóstico para determinar su rol como entes proveedoras de servicios financieros

    Directory of Open Access Journals (Sweden)

    Alexandra Verduga Pino

    2013-12-01

    Full Text Available El objetivo de este trabajo de investigación ha sido identificar, tipificar y diagnosticar las distintas FMC (formas microfinancieras comunitarias, existentes en los cantones de Portoviejo, Montecristi y Jipijapa para determinar su rol como entes proveedoras de servicios microfinancieros, la utilización de la metodología de Evaluación Rural Participativa, ERP fue la herramienta de apoyo que discurre algunas técnicas que tienen como objetivo involucrar a los grupos (comunidades en el proceso de investigación, programación y evaluación. Se realiza un mapeo por cantón, se logra una completa base de datos Excel con toda la información levantada en las 75 comunidades generada con la implementación de 400 encuestas aplicada a directivos de cada una de las FMC identificadas. La información se organizó en 27 reportes, entre ellos la tipificación de las diferentes FMC, detallando su origen, su rol, su dinámica social de funcionamiento, las acciones financieras, mecanismos y metodología de manejo de dinero. En conclusión se identifican 50 FMC en Portoviejo, 111 FMC en Montecristi y 56 FMC en Jipijapa. PALABRAS CLAVE: Formas micro financieras comunitarias.

  6. EL ROL DE LA EVALUACIÓN NEUROPSICOLÓGICA EN EL DIAGNÓSTICO Y EN EL SEGUIMIENTO DE LAS DEMENCIAS

    Directory of Open Access Journals (Sweden)

    Matías Molina D.

    2016-05-01

    Full Text Available El aumento progresivo de la esperanza de vida ha impuesto nuevos desafíos en el abordaje de las patologías que sufren los adultos mayores. Las demencias son unas de las patologías más frecuentes en este grupo etario, causando la pérdida de autonomía de los pacientes y afectando la salud y calidad de vida de sus cuidadores. En conjunto con otros exámenes, la evaluación neuropsicológica cumple un rol fundamental en el proceso de diagnóstico de las demencias, objetivando el Deterioro Cognitivo, entregando información sobre la autonomía de los pacientes y cumpliendo un rol indispensable en el seguimiento de estas enfermedades. La siguiente revisión presentará la problemática y los primeros estudios cognitivos de las demencias, finalizando con una síntesis de las investigaciones que han contribuido a establecer los perfiles neuropsicológicos de las demencias con mayor incidencia en la población.

  7. El rol del Estado y su influencia en las condiciones de vida de la mujer desplazada. Medellín, 2015

    Directory of Open Access Journals (Sweden)

    Isabel Cristina Posada Zapata

    2017-01-01

    Full Text Available Este artículo se propone presentar la comprensión que han hecho las mujeres en situación de desplazamiento acerca del rol que ha desempeñado el Estado y su influencia en las condiciones de vida de la mujer desplazada. Se parte de un enfoque cualitativo, tomando para el análisis elementos de la teoría fundamentada de Strauss y Corbin. La muestra estuvo compuesta por 49 mujeres en situación de desplazamiento. Para el análisis se utilizó la codificación, categorización e interpretación y finalmente se llevó a cabo la teorización. El rol que desempeña el Estado colombiano influye desde la experiencia del desplazamiento hasta la percepción de salud/enfermedad y la búsqueda de soluciones en salud, ya que este ha dispuesto múltiples leyes para la protección de las mujeres desplazadas, pero pocas veces se han cumplido

  8. Rol y condiciones estratégicas del médico dentro del Sistema de Gestión de Seguridad y Salud Ocupacional

    Directory of Open Access Journals (Sweden)

    Óscar Eduardo Vera-Romero

    2015-03-01

    Full Text Available El impacto negativo de los accidentes laborales es tanto sanitario como económico. Se calcula que cerca de 2,3 millones de muertes al año se deben por trabajo. Existen factores de riesgo, como exposición a riesgos físicos, químicos, biológicos, psicosociales y ergonómicos ocasionando desequilibrio de salud y causar accidentes, enfermedades. Para proteger la salud en estos campos existe la Medicina del Trabajo. El Objetivo de este estudio es describir el rol y condiciones estratégicas del médico dentro del sistema de gestión de seguridad y salud ocupacional. Materiales y Métodos: Revisión bibliográfica en BIREME, Scielo Perú, España, Colombia y publicaciones de la International Labour Organización (ILO. Conclusión: El Rol Estratégico del Médico dentro del Sistema de Gestión de Seguridad y Salud Ocupacional presenta los enfoques: humano, médico-legal, económico y social; con responsabilidad directa en la implementación de políticas y programas de salud ocupacional, basado en los códigos de ética nacional e internacional.

  9. El rol femenino a través de los litigios familiares en el Virreinato del Río de la Plata (siglos XVIII y XIX

    Directory of Open Access Journals (Sweden)

    Viviana Kluger

    2014-06-01

    Full Text Available El objeto de este trabajo es analizar el rol femenino en el litigio familiar, a efectos de determinar la presencia de las mujeres a la hora de reclamar el cumplimiento de los deberes y derechos conyugales y paterno filiales en los pleitos entablados en el Virreinato del Río de la Plata. Se trata de medir los ajustes y desajustes, el conformismo y la contradicción entre el modelo propuesto desde la ley y la doctrina, y de contrastar esos esquemas con la praxis judicial. Se presenta primero un análisis del marco legal, para pasar luego al estudio de la asignación de roles familiares, expresada a través de la doctrina canónica y jurídica española de los siglos XVI a XIX, así como de la literatura de la época. Se tratan también el poder de corrección y el deber de subordinación, el rol femenino a través de los litigios familiares, en la defensa del honor y en las alianzas matrimoniales, y se consideran las variaciones según el tiempo, el espacio y la clase social. Por último se exponen unas consideraciones finales acerca de la eventual brecha entre el modelo y la realidad.

  10. Custos, desempenho e estrutura educacional do ensino fundamental: uma análise no município de Rolândia/PR

    Directory of Open Access Journals (Sweden)

    Davi Winter Catelan

    2016-05-01

    Full Text Available Este artigo objetiva analisar as relações entre custos, desempenho e estrutura das diferentes unidades escolares de ensino fundamental da cidade de Rolândia/PR. O estudo tem caráter quantitativo e descritivo, desenvolvendo uma pesquisa de levantamento no município de Rolândia/PR. Para a analise dos dados utiliza-se a estatística descritiva e a análise de correlação. Como resultado, verifica-se que há assimetrias na relação custo/aluno existente entre as escolas pesquisadas, sendo necessário realizar novos estudos para verificar possíveis causas dessas diferenças encontradas. Ademais, nota-se que as escolas que obtiveram maior custo/aluno não necessariamente apresentaram os melhores desempenhos no Índice de Desenvolvimento da Educação Básica [IDEB]. Outro dado do estudo, revelado pela análise de correlação, é de que professores mais experientes conseguem extrair um melhor aprendizado dos alunos. Convém destacar que este trabalho é um esforço inicial para que se desenvolva junto aos municípios mecanismos para melhor gerenciamento dos serviços públicos.

  11. Multiple Descriptions Using Sparse Decompositions

    DEFF Research Database (Denmark)

    Jensen, Tobias Lindstrøm; Østergaard, Jan; Dahl, Joachim

    2010-01-01

    In this paper, we consider the design of multiple descriptions (MDs) using sparse decompositions. In a description erasure channel only a subset of the transmitted descriptions is received. The MD problem concerns the design of the descriptions such that they individually approximate the source...... first-order method to the proposed convex problem such that we can solve large-scale instances for image sequences....

  12. Numerical Transducer Modeling

    DEFF Research Database (Denmark)

    Henriquez, Vicente Cutanda

    This thesis describes the development of a numerical model of the propagation of sound waves in fluids with viscous and thermal losses, with application to the simulation of acoustic transducers, in particular condenser microphones for measurement. The theoretical basis is presented, numerical...... tools and implementation techniques are described and performance tests are carried out. The equations that govern the motion of fluids with losses and the corresponding boundary conditions are reduced to a form that is tractable for the Boundary Element Method (BEM) by adopting some hypotheses...... that are allowable in this case: linear variations, absence of flow, harmonic time variation, thermodynamical equilibrium and physical dimensions much larger than the molecular mean free path. A formulation of the BEM is also developed with an improvement designed to cope with the numerical difficulty associated...

  13. Industrial numerical analysis

    International Nuclear Information System (INIS)

    McKee, S.; Elliott, C.M.

    1986-01-01

    The applications of mathematics to industrial problems involves the formulation of problems which are amenable to mathematical investigation, mathematical modelling, the solution of the mathematical problem and the inter-pretation of the results. There are 12 chapters describing industrial problems where mathematics and numerical analysis can be applied. These range from the numerical assessment of the flatness of engineering surfaces and plates, the design of chain links, control problems in tidal power generation and low thrust satellite trajectory optimization to mathematical models in welding. One chapter, on the ageing of stainless steels, is indexed separately. (UK)

  14. On numerical Bessel transformation

    International Nuclear Information System (INIS)

    Sommer, B.; Zabolitzky, J.G.

    1979-01-01

    The authors present a computer program to calculate the three dimensional Fourier or Bessel transforms and definite integrals with Bessel functions. Numerical integration of systems containing Bessel functions occurs in many physical problems, e.g. electromagnetic form factor of nuclei, all transitions involving multipole expansions at high momenta. Filon's integration rule is extended to spherical Bessel functions. The numerical error is of the order of the Simpson error term of the function which has to be transformed. Thus one gets a stable integral even at large arguments of the transformed function. (Auth.)

  15. Evalutive Descriptions of Art

    Directory of Open Access Journals (Sweden)

    Nataša Lah

    2016-01-01

    Full Text Available Taking into account the fact that, throughout history, certain artworks have been considered as “worth of watching” (according to the Greek etymon ἀξιοϑέατος / aksioteatos, preservation, or theorizing, while others were not, one is led to investigate the various types of evaluative descriptions. Those artworks that are more valuable than others, or simply valuable in themselves on the basis of rather specific features, have always represented the paradigmatic model for the evaluator, thus revealing the identitary nature of value as different from one epoch to another. Our aim has been to discern, with regard to this starting point, the way in which the process of evaluating artworks fits the general matrix of the universal theory of value, with its clearly distinguished levels of evaluation, beginning with value descriptions, continuing through the features of evaluation or abstract qualities of values extracted from these descriptions, and ending with value norms or systems of accepted generalizations in evaluation. Value standpoints in such an evaluation matrix represent dispositions or preferences in procedures, which reflect the norms or signifying concepts of the time. Corresponding procedures, or applications of the hierarchicized signification of artworks, are manifested in all known forms of artwork assessment: attribution, institutionalization, and setting of priorities in terms of exhibition, conservation, acquisition, restoration, and so on. Research in the history of European art-historical ideas has corroborated the hypothesis that, prior to the late 18th century, clear normative patterns were applied when it came to the evaluation of artworks. However, with the emergence of early Romanticism, this could no longer be done in the traditional way. Before the period in question, visual art was created (regardless of some stylistic discrepancies between individual authors and classified according to well-defined thematic

  16. Polemic and Descriptive Negations

    DEFF Research Database (Denmark)

    Horslund, Camilla Søballe

    2011-01-01

    as such may be more or less central to the meaning of the utterance. The present paper investigates the role of morphosyntactic and prosodic prominence as well as register and social setting on the interpretation of negations. It seems plausible to expect that if the negation as such is central to the meaning...... of the utterance (as in polemic negations), the negation will be articulated prominently in order to emphasise this importance. Likewise, if the negation is not central to the meaning of the utterance, it should not be articulated prominently. Moreover, it is plausible to expect descriptive negations to be more...... common in certain social context or genres, while polemic negations are more likely to come up in other genres and social settings. Previous studies have shown a relation between articulatory prominence and register, which may further inform the analysis. Hence, the paper investigates how articulatory...

  17. Task Description Language

    Science.gov (United States)

    Simmons, Reid; Apfelbaum, David

    2005-01-01

    Task Description Language (TDL) is an extension of the C++ programming language that enables programmers to quickly and easily write complex, concurrent computer programs for controlling real-time autonomous systems, including robots and spacecraft. TDL is based on earlier work (circa 1984 through 1989) on the Task Control Architecture (TCA). TDL provides syntactic support for hierarchical task-level control functions, including task decomposition, synchronization, execution monitoring, and exception handling. A Java-language-based compiler transforms TDL programs into pure C++ code that includes calls to a platform-independent task-control-management (TCM) library. TDL has been used to control and coordinate multiple heterogeneous robots in projects sponsored by NASA and the Defense Advanced Research Projects Agency (DARPA). It has also been used in Brazil to control an autonomous airship and in Canada to control a robotic manipulator.

  18. YUCCA MOUNTAIN SITE DESCRIPTION

    Energy Technology Data Exchange (ETDEWEB)

    A.M. Simmons

    2004-04-16

    The ''Yucca Mountain Site Description'' summarizes, in a single document, the current state of knowledge and understanding of the natural system at Yucca Mountain. It describes the geology; geochemistry; past, present, and projected future climate; regional hydrologic system; and flow and transport within the unsaturated and saturated zones at the site. In addition, it discusses factors affecting radionuclide transport, the effect of thermal loading on the natural system, and tectonic hazards. The ''Yucca Mountain Site Description'' is broad in nature. It summarizes investigations carried out as part of the Yucca Mountain Project since 1988, but it also includes work done at the site in earlier years, as well as studies performed by others. The document has been prepared under the Office of Civilian Radioactive Waste Management quality assurance program for the Yucca Mountain Project. Yucca Mountain is located in Nye County in southern Nevada. The site lies in the north-central part of the Basin and Range physiographic province, within the northernmost subprovince commonly referred to as the Great Basin. The basin and range physiography reflects the extensional tectonic regime that has affected the region during the middle and late Cenozoic Era. Yucca Mountain was initially selected for characterization, in part, because of its thick unsaturated zone, its arid to semiarid climate, and the existence of a rock type that would support excavation of stable openings. In 1987, the United States Congress directed that Yucca Mountain be the only site characterized to evaluate its suitability for development of a geologic repository for high-level radioactive waste and spent nuclear fuel.

  19. YUCCA MOUNTAIN SITE DESCRIPTION

    International Nuclear Information System (INIS)

    Simmons, A.M.

    2004-01-01

    The ''Yucca Mountain Site Description'' summarizes, in a single document, the current state of knowledge and understanding of the natural system at Yucca Mountain. It describes the geology; geochemistry; past, present, and projected future climate; regional hydrologic system; and flow and transport within the unsaturated and saturated zones at the site. In addition, it discusses factors affecting radionuclide transport, the effect of thermal loading on the natural system, and tectonic hazards. The ''Yucca Mountain Site Description'' is broad in nature. It summarizes investigations carried out as part of the Yucca Mountain Project since 1988, but it also includes work done at the site in earlier years, as well as studies performed by others. The document has been prepared under the Office of Civilian Radioactive Waste Management quality assurance program for the Yucca Mountain Project. Yucca Mountain is located in Nye County in southern Nevada. The site lies in the north-central part of the Basin and Range physiographic province, within the northernmost subprovince commonly referred to as the Great Basin. The basin and range physiography reflects the extensional tectonic regime that has affected the region during the middle and late Cenozoic Era. Yucca Mountain was initially selected for characterization, in part, because of its thick unsaturated zone, its arid to semiarid climate, and the existence of a rock type that would support excavation of stable openings. In 1987, the United States Congress directed that Yucca Mountain be the only site characterized to evaluate its suitability for development of a geologic repository for high-level radioactive waste and spent nuclear fuel

  20. Olkiluoto site description 2004

    International Nuclear Information System (INIS)

    2005-05-01

    This Olkiluoto Site Description 2004 is a description of the Olkiluoto site, in which the various disciplines have been integrated to produce a coherent picture, and is based on the data available prior to the start of the underground excavation of the ONKALO facility. This report is the first version of such a Site Report and supplements the site syntheses that have already been published. Further Site Reports will be produced on a regular basis and it is planned that the Site Report should form the geoscientific basis of the Safety Case in a future licence application. The report updates the Baseline report published in 2003 and is designed to produce an integrated site model, by focusing on interdisciplinary interactions, and also by including new data obtained during 2003 and 2004. The report has been produced by the OMTF (Olkiluoto Modelling Task Force), which covers the areas of geology, rock mechanics, hydrogeology and hydrogeochemistry. In addition to discussing the input from these four disciplines, the Site Report also includes a description of the surface conditions. Formally, the surface conditions are not within the remit of the OMTF, which is concentrating on modelling the bedrock around the ONKALO and the future repository. The influence of the surface conditions to the overall system and to the conditions at depth is recognised, however, and thus a summary of climate, ecosystems and overburden properties is also included in this report. Chapter 1 sets out the methodology to be used in the modelling, describes the various discipline-specific models which are developed and the modelled areas which are used, and also describes two important processes - the prediction/outcome studies and the uncertainty and confidence assessment. The difference between the estimate (the prediction) and the result (the outcome) indicates the level of knowledge and the prevailing uncertainties in the models. Chapter 2 presents the applied investigation data, which are

  1. Analysis of numerical methods

    CERN Document Server

    Isaacson, Eugene

    1994-01-01

    This excellent text for advanced undergraduates and graduate students covers norms, numerical solution of linear systems and matrix factoring, iterative solutions of nonlinear equations, eigenvalues and eigenvectors, polynomial approximation, and other topics. It offers a careful analysis and stresses techniques for developing new methods, plus many examples and problems. 1966 edition.

  2. Numerical Estimation in Preschoolers

    Science.gov (United States)

    Berteletti, Ilaria; Lucangeli, Daniela; Piazza, Manuela; Dehaene, Stanislas; Zorzi, Marco

    2010-01-01

    Children's sense of numbers before formal education is thought to rely on an approximate number system based on logarithmically compressed analog magnitudes that increases in resolution throughout childhood. School-age children performing a numerical estimation task have been shown to increasingly rely on a formally appropriate, linear…

  3. Numerical analysis using Sage

    CERN Document Server

    Anastassiou, George A

    2015-01-01

    This is the first numerical analysis text to use Sage for the implementation of algorithms and can be used in a one-semester course for undergraduates in mathematics, math education, computer science/information technology, engineering, and physical sciences. The primary aim of this text is to simplify understanding of the theories and ideas from a numerical analysis/numerical methods course via a modern programming language like Sage. Aside from the presentation of fundamental theoretical notions of numerical analysis throughout the text, each chapter concludes with several exercises that are oriented to real-world application.  Answers may be verified using Sage.  The presented code, written in core components of Sage, are backward compatible, i.e., easily applicable to other software systems such as Mathematica®.  Sage is  open source software and uses Python-like syntax. Previous Python programming experience is not a requirement for the reader, though familiarity with any programming language is a p...

  4. Numerical analysis targets

    International Nuclear Information System (INIS)

    Sollogoub, Pierre

    2001-01-01

    Numerical analyses are needed in different steps of the overall design process. Complex models or non-linear reactor core behaviour are important for qualification and/or comparison of results obtained. Adequate models and test should be defined. Fuel assembly, fuel row, and the complete core should be tested for seismic effects causing LOCA and flow-induced vibrations (FIV)

  5. Paradoxes in numerical calculations

    Czech Academy of Sciences Publication Activity Database

    Brandts, J.; Křížek, Michal; Zhang, Z.

    2016-01-01

    Roč. 26, č. 3 (2016), s. 317-330 ISSN 1210-0552 R&D Projects: GA ČR GA14-02067S Institutional support: RVO:67985840 Keywords : round-off errors * numerical instability * recurrence formulae Subject RIV: BA - General Mathematics Impact factor: 0.394, year: 2016

  6. Numerical Methods in Linguistics

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 10; Issue 1. Numerical Methods in Linguistics - An Introduction to Glottochronology. Raamesh Gowri Raghavan. General Article Volume 10 Issue 1 January 2005 pp 17-24. Fulltext. Click here to view fulltext PDF. Permanent link:

  7. Aportes teóricos sobre el rol de la propiedad comunal en la transición al capitalismo

    Directory of Open Access Journals (Sweden)

    Corina Luchía

    2004-01-01

    Full Text Available This research work is aimed at the approach to the communal ownership role during the transition from feudalism to capitalism in Europe on the basis of the disorganisation dynamics in the dominant mode of production. We start from the idea that transition does not imply the suppression of the components in the former mode of production, but their existence and even their strengthening on modified grounds. For instance, the prevalence of rural modes of production, in which collective ownership constitutes one of their major material support foundations. However, this is a complex process which is not free from ambiguities. Domestic corruption within the village community, with the resulting partial proletarization of its labour force, is closely connected to the offensive against the commune lands. However, within the studied period the phenomenon is not absolute, because while village producers are suffering a progressive loss of lands, there is a reinforcement of feudal relations, in which soil is under cultivation. Contradictions in the historical development force historians into a dialectic approach that accounts for this special feature. A critical dialogue along with the theoretical contributions by agricultural sociology and rural antropology provide a stimulus to this research.En el presente trabajo se propone un abordaje del rol de la propiedad comunal en la transición del feudalismo al capitalismo europeo a partir de la dinámica de desestructuración del modo de producción dominante. Partimos de la idea que la transición no implica la eliminación de los elementos que componen el modo de producción anterior, sino su permanencia y aún su fortalecimiento sobre bases modificadas. Este es el caso de la pervivencia de las formas campesinas de producción, dentro de las cuales la propiedad colectiva es una de sus bases de sostenimiento material más importantes. Sin embargo, este proceso es complejo y no está excento de ambig

  8. An Apparent Descriptive Method for Judging the Synchronization of ...

    Indian Academy of Sciences (India)

    R. Narasimhan (Krishtel eMaging) 1461 1996 Oct 15 13:05:22

    that show eclipses and visual binary stars concurrently. The synchronous parameters for fifty-five components in thirty binary systems are calculated by using several methods. The numerical results are listed in Tables 1 and. 2. The statistical results are listed in Table 3. In addition, several apparent descriptive methods are ...

  9. Nivel de conocimiento sobre la especialidad de medicina interna y percepción de los usuarios sobre el rol y capacidades del médico internista

    Directory of Open Access Journals (Sweden)

    Franco Romaní-Romaní

    2009-03-01

    Full Text Available Introducción: La especialidad de medicina interna enfrenta muchos retos para permanecer competitiva en el sistema de salud, siendo el escaso conocimiento del público sobre la definición, capacidades y competencias de la medicina interna y del internista uno de esos retos. Objetivos: Determinar cuáles son los conocimientos y la percepción de los pacientes sobre el rol de la medicina interna y del médico internista. Diseño: Estudio transversal, descriptivo y analítico. Lugar: Hospital Nacional Arzobispo Loayza, Hospital Nacional Edgardo Rebagliati y una clínica privada. Participantes: Pacientes adultos que visitaron los servicios de Medicina interna de los tres hospitales. Intervención: Se invitó a llenar un cuestionario anónimo y autoadministrado a los participantes entre el 1 y el 15 de septiembre de 2008. Principales medidas de resultados: Nivel de conocimiento sobre medicina interna e internista, percepción de confianza hacia el internista. Resultados: Quinientos pacientes completaron el cuestionario, 42,8% del Hospital Loayza, 40% del Hospital Rebagliati y 17,2% de una clínica privada. Solo 12,2% alcanzó un buen nivel de conocimiento. El 79% de pacientes tuvo percepción de confianza en el internista para el manejo de síntomas, 50,2% confió en la habilidad clínica del internista y 45,9% confió en el manejo de las enfermedades específicas. Conclusiones: Los pacientes no tienen una definición clara de la medicina interna y el rol del internista. La percepción de confianza es alta con respecto al manejo de los síntomas, pero disminuye al tratarse de enfermedades específicas y de las habilidades clínicas del internista. Por lo tanto, debe realizarse esfuerzos de educación pública para mejorar el entendimiento del rol del internista como especialista en medicina de adultos.

  10. Numerical model CCC

    International Nuclear Information System (INIS)

    Bodvarsson, G.S.; Lippmann, M.J.

    1980-01-01

    The computer program CCC (conduction-convection-consolidation), developed at Lawrence Berkeley Laboratory, solves numerically the heat and mass flow equations for a fully saturated medium, and computes one-dimensional consolidation of the simulated systems. The model employs the Integrated Finite Difference Method (IFDM) in discretizing the saturated medium and formulating the governing equations. The sets of equations are solved either by an iterative solution technique (old version) or an efficient sparse solver (new version). The deformation of the medium is calculated using the one-dimensional consolidation theory of Terzaghi. In this paper, the numerical code is described, validation examples given and areas of application discussed. Several example problems involving flow through fractured media are also presented

  11. Numerical simulation in astrophysics

    International Nuclear Information System (INIS)

    Miyama, Shoken

    1985-01-01

    There have been many numerical simulations of hydrodynamical problems in astrophysics, e.g. processes of star formation, supernova explosion and formation of neutron stars, and general relativistic collapse of star to form black hole. The codes are made to be suitable for computing such problems. In astrophysical hydrodynamical problems, there are the characteristics: problems of self-gravity or external gravity acting, objects of scales very large or very short, objects changing by short period or long time scale, problems of magnetic force and/or centrifugal force acting. In this paper, we present one of methods of numerical simulations which may satisfy these requirements, so-called smoothed particle methods. We then introduce the methods briefly. Then, we show one of the applications of the methods to astrophysical problem (fragmentation and collapse of rotating isothermal cloud). (Mori, K.)

  12. Handbook of numerical analysis

    CERN Document Server

    Ciarlet, Philippe G

    Mathematical finance is a prolific scientific domain in which there exists a particular characteristic of developing both advanced theories and practical techniques simultaneously. Mathematical Modelling and Numerical Methods in Finance addresses the three most important aspects in the field: mathematical models, computational methods, and applications, and provides a solid overview of major new ideas and results in the three domains. Coverage of all aspects of quantitative finance including models, computational methods and applications Provides an overview of new ideas an

  13. Numerical Modeling of Airblast.

    Science.gov (United States)

    1987-06-01

    can be found in Appendix A. TASK 2.4 The 3--D FCT code was used to study the late time cloud rise geometry from multiple nulear explosions...code was used to study the possiblity of using distributed chemical charges in array geometries. Numerous chemical energy release models where employed...relief of the blast energy at the edges of the DECA charge). Later, it was realized that the edge effects are small at the time when most of the blast

  14. Comments on numerical simulations

    International Nuclear Information System (INIS)

    Sato, T.

    1984-01-01

    The author comments on a couple of things about numerical simulation. One is just about the philosophical discussion that is, spontaneous or driven. The other thing is the numerical or technical one. Frankly, the author didn't want to touch on the technical matter because this should be a common sense one for those who are working at numerical simulation. But since many people take numerical simulation results at their face value, he would like to remind you of the reality hidden behind them. First, he would point out that the meaning of ''driven'' in driven reconnection is different from that defined by Schindler or Akasofu. The author's definition is closer to Axford's definition. In the spontaneous case, for some unpredicted reason an excess energy of the system is suddenly released at a certain point. However, one does not answer how such an unstable state far beyond a stable limit is realized in the magnetotail. In the driven case, there is a definite energy buildup phase starting from a stable state; namely, energy in the black box increases from a stable level subject to an external source. When the state has reached a certain position, the energy is released suddenly. The difference between driven and spontaneous is whether the cause (plasma flow) to trigger reconnection is specified or reconnection is triggered unpredictably. Another difference is that in driven reconnection the reconnection rate is dependent on the speed of the external plasma flow, but in spontaneous reconnection the rate is dependent on the internal condition such as the resistivity

  15. Hybrid undulator numerical optimization

    Energy Technology Data Exchange (ETDEWEB)

    Hairetdinov, A.H. [Kurchatov Institute, Moscow (Russian Federation); Zukov, A.A. [Solid State Physics Institute, Chernogolovka (Russian Federation)

    1995-12-31

    3D properties of the hybrid undulator scheme arc studied numerically using PANDIRA code. It is shown that there exist two well defined sets of undulator parameters which provide either maximum on-axis field amplitude or minimal higher harmonics amplitude of the basic undulator field. Thus the alternative between higher field amplitude or pure sinusoidal field exists. The behavior of the undulator field amplitude and harmonics structure for a large set of (undulator gap)/(undulator wavelength) values is demonstrated.

  16. Numerical analysis II essentials

    CERN Document Server

    REA, The Editors of; Staff of Research Education Association

    1989-01-01

    REA's Essentials provide quick and easy access to critical information in a variety of different fields, ranging from the most basic to the most advanced. As its name implies, these concise, comprehensive study guides summarize the essentials of the field covered. Essentials are helpful when preparing for exams, doing homework and will remain a lasting reference source for students, teachers, and professionals. Numerical Analysis II covers simultaneous linear systems and matrix methods, differential equations, Fourier transformations, partial differential equations, and Monte Carlo methods.

  17. On Numerical Heating

    Science.gov (United States)

    Liou, Meng-Sing

    2013-11-01

    The development of computational fluid dynamics over the last few decades has yielded enormous successes and capabilities that are being routinely employed today; however there remain some open problems to be properly resolved. One example is the so-called overheating problem, which can arise in two very different scenarios, from either colliding or receding streams. Common in both is a localized, numerically over-predicted temperature. Von Neumann reported the former, a compressive overheating, nearly 70 years ago and numerically smeared the temperature peak by introducing artificial diffusion. However, the latter is unphysical in an expansive (rarefying) situation; it still dogs every method known to the author. We will present a study aiming at resolving this overheating problem and we find that: (1) the entropy increase is one-to-one linked to the increase in the temperature rise and (2) the overheating is inevitable in the current computational fluid dynamics framework in practice. Finally we will show a simple hybrid method that fundamentally cures the overheating problem in a rarefying flow, but also retains the property of accurate shock capturing. Moreover, this remedy (enhancement of current numerical methods) can be included easily in the present Eulerian codes. This work is performed under NASA's Fundamental Aeronautics Program.

  18. Macroscopic Description for Networks of Spiking Neurons

    Science.gov (United States)

    Montbrió, Ernest; Pazó, Diego; Roxin, Alex

    2015-04-01

    A major goal of neuroscience, statistical physics, and nonlinear dynamics is to understand how brain function arises from the collective dynamics of networks of spiking neurons. This challenge has been chiefly addressed through large-scale numerical simulations. Alternatively, researchers have formulated mean-field theories to gain insight into macroscopic states of large neuronal networks in terms of the collective firing activity of the neurons, or the firing rate. However, these theories have not succeeded in establishing an exact correspondence between the firing rate of the network and the underlying microscopic state of the spiking neurons. This has largely constrained the range of applicability of such macroscopic descriptions, particularly when trying to describe neuronal synchronization. Here, we provide the derivation of a set of exact macroscopic equations for a network of spiking neurons. Our results reveal that the spike generation mechanism of individual neurons introduces an effective coupling between two biophysically relevant macroscopic quantities, the firing rate and the mean membrane potential, which together govern the evolution of the neuronal network. The resulting equations exactly describe all possible macroscopic dynamical states of the network, including states of synchronous spiking activity. Finally, we show that the firing-rate description is related, via a conformal map, to a low-dimensional description in terms of the Kuramoto order parameter, called Ott-Antonsen theory. We anticipate that our results will be an important tool in investigating how large networks of spiking neurons self-organize in time to process and encode information in the brain.

  19. PERSONALITY AND CHARACTER PREFERENCE IN ROLE-PLAYING GAMES PERSONALIDAD Y ELECCIÓN DE PERSONAJE EN LOS JUEGOS DE ROL: DIME QUIÉN ERES Y TE DIRÉ QUIÉN PREFIERES SER

    Directory of Open Access Journals (Sweden)

    Pedro José Ramos-Villagrasa

    2010-11-01

    Full Text Available In role-playing games players perform participative and episodic stories. Personality is a psychological construct associated with decision processes in many aspects of life. In this study, we analyzed if Big Five Personality Factors were related to game character preferences in the role-playing game “Dungeons & Dragons”. Results show that Personality is related only in the decision of character’s class. We also study the relationship between Personality and plots in role-playing games (action, intrigue, mystery, and personal relationships. Finally, recommendations to further investigation were given.Los juegos de rol son una forma de ocio en la que un conjunto de jugadores participa en un sistema de creación de historias episódicas y participativas. La personalidad es un constructo que ha mostrado su influencia en la toma de decisiones de múltiples aspectos de la vida, y en este estudio comprobamos si se relaciona con la elección de personaje. Se contó con cincuenta y siete jugadores de rol que cumplimentaron un cuestionario acerca del juego de rol Dungeons & Dragons. Los resultados muestran diferencias en la elección de la clase de personaje según los factores de personalidad Apertura a la Experiencia, Amigabilidad y Extraversión. Junto a ello, se examinan las asociaciones existentes entre Personalidad y preferencia de determinados tipos de partidas de rol. Finalmente, se reivindica la realización de más investigaciones que contribuyan a conocer la relación entre Personalidad y elección de personaje en los juegos de rol.

  20. Descriptive assessment for physical education

    OpenAIRE

    Pirih Tavčar, Ksenija

    2016-01-01

    Descriptive grading is a type of grading in which opinions about children’s knowledge or products are expressed in sentences. This opinion highlights what individual children know or have mastered, what they have not mastered, and what they should do to improve. In descriptive grading, the pupil’s work is assessed in terms of learning objectives. In their descriptive grades, physical education (PE) teachers write down everything that they have taught and reviewed with their pupils during t...

  1. El negocio de la producción de semillas mejoradas y su rol en el proceso de privatización de la agricultura mexicana

    Directory of Open Access Journals (Sweden)

    Gilberto Aboites

    1999-01-01

    Full Text Available Este artículo rastrea los orígenes de la producción industrial de semillas mejoradas y enfatiza su rol en la privatización de la agricultura mexicana. El argumento establece que la modernización de la agricultura no se puede concebir como una acción homogénea y siempre progresista, como si se hubiera podido decretar de un solo golpe y para siempre, sino que ha sufrido diversos cambios, adecuaciones y retrocesos. En las conclusiones se resalta el alto grado de concentración que se tiene en la Asociación empresarial de productores de semillas mejoradas y sus efectos para la autosuficencia alimentaria y la exclusión de muchas zonas productoras de maíz donde la mayoría de los productores son campesinos pobres.

  2. Perspectiva y evolución del rol enfermero: la enfermería frente al espejo: mitos y realidades. Recensión

    OpenAIRE

    Paniagua Mota, Nuria

    2014-01-01

    La evolución del rol de enfermería se ha visto influenciado por los diferentes factores y acontecimientos a lo largo de la historia, lo que ha llevado a estructurar la evolución de la enfermería en diferentes etapas; etapa doméstica, vocacional, técnica y profesional. Se realiza una recensión del libro “La enfermería frente al espejo: mitos y realidades”, del autor Juan F. Hernández Yáñez y una búsqueda bibliográfica a través de diversos buscadores y bases de datos. Se analizan aconteci...

  3. El rol del profesor y el software geogebra: experiencia de aula bajo la teoría de la mediación semiótica

    OpenAIRE

    Mejía, Cristina; Molina, Óscar

    2013-01-01

    En este artículo se presenta parte del trabajo de grado que estoy desarrollando para optar por el título de maestría en Docencia de las Matemáticas. Específicamente, se recuentan detalles de una experiencia de aula en la que el objetivo es formular una conjetura en la clase de geometría con estudiantes de grado octavo, y a partir de tal recuento se realiza un análisis parcial del rol del profesor, bajo el modelo de la Mediación Semiótica. Dicha experiencia está centrada en el uso de un softwa...

  4. The contribution of Social Work in the permanence of students in basic education: a study from the public schools in the City of Rolândia/PR

    Directory of Open Access Journals (Sweden)

    Jaqueline Natália de Almeida

    2014-12-01

    Full Text Available The school is a social space characterized by the presence of situations caused by the material conditions of existence of the students, which reproduce daily academic. In this article, we propose to investigate how the Social Work can contribute to students' stay in school. To achieve the research were interviewed three directors and a director supporting all public schools in the municipality of Rolândia / PR. To overcome truancy, whether in municipalities of small, medium or large, education can not be conducted in isolation from other social policies, rather it should be implemented in coordination with the health, housing, social assistance. And Social Work, through their professional practice, can contribute to the realization of the right to education.

  5. El rol del maestro frente a la construcción del juego simbólico en los niños

    Directory of Open Access Journals (Sweden)

    María Eugenia Villalobos

    2009-01-01

    Full Text Available En el presente artículo se muestran tres formas de juego espontáneo llevadas a cabo por los niños en preescolar y primero de primaria, que orientan el marco de referencia. Se busca mostrar los elementos comprensivos de los que puede disponer el maestro para ofrecer a los niños posibilidades de transformar las experiencias de juegos estereotipados, llamados juego -juguete-, en juego simbólico. La observación y análisis de las actividades de los niños muestra cómo ellos organizan nuevas representaciones a partir de los nuevos significados que otorgan a sus experiencias. Frente a estos procesos de los niños, el maestro tiene un rol primordial para favorecer las experiencias de significación que sustentan los procesos de aprendizaje

  6. Los poetas se negaron a morir: el rol de la autoría en la comunicación literaria

    Directory of Open Access Journals (Sweden)

    Erasto Antonio Espino Barahona

    2002-01-01

    Full Text Available La producción y comprensión del texto literario supone una particular comunicación entre dos sujetos: el autor y el lector. En la misma se ponen en juego problemas humanos fundamentales como lo son la cuestión del otro y del sentido: ¿Para qué escribimos? ¿La labor escritural y lectora puede y debe ayudarnos en nuestra búsqueda de sentido? ¿Cuándo leo, puedo prescindir de la comunicación con ese otro que es el autor y buscarme sólo a mí mismo? El texto intenta responder a estas y otras interrogantes, tomando una distancia crítica frente a algunas posturas teóricas que al explicar la comunicación literaria, minusvaloran la función semiótica del rol del autor.

  7. El rol de la Unión Africana (UA) en el Cuerno de África a partir del caso de Somalia - AMISOM (2007-2013)

    OpenAIRE

    Angulo Ramos, Miguel Eduardo

    2016-01-01

    El propósito de esta monografía es comprender cuál ha sido el rol de la Unión Africana (UA), dentro de la misión de paz AMISOM en el periodo de 2007- 2013. Por ello, el trabajo abarca aspectos geopolíticos e históricos, que han influido en la configuración del conflicto armado de Somalía y que han llevado progresivamente a la creación, evolución e implementación de mecanismos como las misiones de paz. Además, se abarcan los planteamientos del neo-funcionalismo y e...

  8. Examinando el rol de las amenidades y la reestructuración regional sobre el crecimiento urbano argentino 1991-2001

    Directory of Open Access Journals (Sweden)

    Carlos M. LEVEAU

    2013-01-01

    Full Text Available El objetivo de este trabajo es analizar el rol de las amenidades y la reestructuración regional sobre el crecimiento poblacional de las aglomeraciones superiores a los diez mil habitantes en Argentina, durante el periodo 1991-2001. Las aglomeraciones de amenidad registraron el mayor crecimiento relativo promedio, mientras que las aglomeraciones de nueva industrialización registraron un crecimiento menor al total del universo de estudio. Al analizar los patrones inmigratorios entre ambos grupos de aglomeraciones, se hace evidente un fenómeno de inmigración de retiro en las áreas de amenidad. Estos resultados se discutieron en relación a diferentes marcos teóricos que intentan explicar el reciente fenómeno de desconcentración poblacional experimentado mayoritariamente por los países centrales.

  9. Rol moderador de Core Self Evaluations sobre Apoyo Social Percibido y distrés psicológico en población desempleada

    OpenAIRE

    Peláez-Fernández, María de los Ángeles; Extremera, Natalio; Rey, Lourdes

    2014-01-01

    Propósito: El propósito de esta investigación fue estudiar el rol moderador de la variable Core Self Evaluations (CSE; Evaluaciones sobre uno mismo) en la relación entre Apoyo Social Percibido (ASP) y dimensiones DASS (Distrés psicológico: Estrés, Ansiedad y Depresión) en población desempleada de Málaga. Marco teórico y justificación: El desempleo es un factor asociado al incremento de estrés, ansiedad y depresión. Existe evidencia de relación negativa entre CSE e indicadores de distrés p...

  10. Olkiluoto biosphere description 2006

    International Nuclear Information System (INIS)

    Haapanen, R.; Aro, L.; Ilvesniemi, H.; Kareinen, T.; Kirkkala, T.; Mykrae, S.; Turkki, H.; Lahdenperae, A.-M.; Ikonen, A.T.K.

    2007-02-01

    This report summarises the current knowledge of the biosphere of Olkiluoto, and it is the first Biosphere Description Report. The elements considered were climate, topography, land use, overburden, terrestrial vegetation and fauna and sea flora, fauna and water. The principal aim was to present a synthesis of the present state (now to 2020) and the main features of past evolution of the biosphere at the site using currently available data. The lack of site specific parameters and their importance was discussed. Conceptual ecosystem models are presented for land and sea. Currently available data made it possible to calculate the biomass of the terrestrial vegetation and further convert it to carbon. In the case of terrestrial animals, preliminary figures are given for moose alone due to lack of sitespecific data. For the same reason, the sea ecosystem model was not quantified within this work. The ecosystems on Olkiluoto do not deviate from the surrounding areas. Since mires are few on Olkiluoto, forests are the most important land ecosystem. However, coastal areas are the transition zones between land and sea, and also potential sites for deep groundwater discharge. The major interest concerning aquatic ecosystems was laid on four future lakes potentially developing from the sea due to the land up-lift. Current sea sediments near Olkiluoto are future land areas, and thus very important. Spatially, the forest ecosystems of Olkiluoto are now most comprehensively covered, while the temporal coverage is highest in sea ecosystems. Lack of data is greatest in terrestrial fauna and sea sediments. During this work, the system boundaries were crossed and the use of data over disciplines was started. The data were mostly in agreement, but some discrepancies were detected. To solve these, and to supplement the existing data, some recommendations were given. (orig.)

  11. Trusting Description: Authenticity, Accountability, and Archival Description Standards

    Science.gov (United States)

    MacNeil, Heather

    2009-01-01

    It has been suggested that one of the purposes of archival description is to establish grounds for presuming the authenticity of the records being described. The article examines the implications of this statement by examining the relationship between and among authenticity, archival description, and archival accountability, assessing how this…

  12. Identification des triacylglycérols en HPLC. Comment se passer du couplage HPLC-SM ? Dans quel cas la chromatographie est-elle encore indispensable ?

    Directory of Open Access Journals (Sweden)

    Tamba Sompila Arnaud W. G.

    2014-11-01

    Full Text Available Les huiles et graisses sont principalement constituées de triacylglycérols. Ces derniers diffèrent par leur nombre total de carbone, la répartition des acides gras sur les trois sommets de la tête glycéryle et la configuration linéaire, ramifiée ou cyclique des chaînes grasses. Ils diffèrent aussi par leur nombre total de doubles liaisons, leur répartition sur les chaînes grasses, et au sein d’une chaîne grasse par leur position et leur configuration. Cela conduit à des mélanges complexes comprenant un grand nombre de congénères qu’il est classique d’analyser par chromatographie en phase liquide. Dans cet article, nous montrons qu’indépendamment du détecteur utilisé (DEDL, Corona, SM la seule utilisation des lois de rétention ln α = f(NC, ln α = f(NDL et ln α = f(NP permet d’identifier les triacylglycérols d’huiles d’Afrique équatoriale. La démarche proposée ne nécessite pas de couplage spécifique avec la spectrométrie de masse, un système HPLC de base suffit. À titre d’exemple nous avons choisi l’huile de Ricinodendron heudelotii qui contient majoritairement des acides gras polyinsaturés en C18:3 isomères de position et de configuration.

  13. Cambios en el rol social del paciente oncohematológico: un estudio de caso Changes in the oncohematologic patient's social role: a case study

    Directory of Open Access Journals (Sweden)

    David Nondedeu Arráez

    2011-09-01

    Full Text Available El tratamiento habitual de las enfermedades oncohematológicas consta de tratamiento específico de quimioterapia, así como tratamiento de soporte para evitar o paliar los efectos secundarios. Dentro de este tratamiento de soporte se incluyen medidas preventivas derivadas de la inmunodepresión medular como la modificación de la alimentación y el aislamiento. En este estudio de caso describimos cómo afectan todas estas medidas terapéuticas y de soporte en el rol social de un paciente afectado de leucemia mieloide aguda. Los datos cualitativos procedentes del paciente fueron obtenidos mediante una entrevista semiestructurada, transcritos a papel y analizados y agrupados según las dimensiones familiar, laboral, social y emocional. Los resultados indican que existe una ruptura y un cambio en el rol social del paciente, así como un cambio en su estatus emocional.The usual treatment of oncohematological diseases consists of specific treatment chemotherapy and supportive care to prevent or mitigate the secondary effects. Within this supportive treatment includes pre-ventive measures resulting from bone marrow immunosuppression as dietary changes and isolation. In this case study we describe how these therapeutic and support measures affect in the social role of a patient suffering from acute myeloid leukemia. Qualitative data from the patient were obtained through a semistructured interview, transcribed to paper and analyzed and grouped according to family size, employment, social and emotional development. The results indicate a break and a change in the patient's social role and a change in emotional status.

  14. Numerical analysis of the Anderson localization

    International Nuclear Information System (INIS)

    Markos, P.

    2006-01-01

    The aim of this paper is to demonstrate, by simple numerical simulations, the main transport properties of disordered electron systems. These systems undergo the metal insulator transition when either Fermi energy crosses the mobility edge or the strength of the disorder increases over critical value. We study how disorder affects the energy spectrum and spatial distribution of electronic eigenstates in the diffusive and insulating regime, as well as in the critical region of the metal-insulator transition. Then, we introduce the transfer matrix and conductance, and we discuss how the quantum character of the electron propagation influences the transport properties of disordered samples. In the weakly disordered systems, the weak localization and anti-localization as well as the universal conductance fluctuation are numerically simulated and discussed. The localization in the one dimensional system is described and interpreted as a purely quantum effect. Statistical properties of the conductance in the critical and localized regimes are demonstrated. Special attention is given to the numerical study of the transport properties of the critical regime and to the numerical verification of the single parameter scaling theory of localization. Numerical data for the critical exponent in the orthogonal models in dimension 2 < d ≤ 5 are compared with theoretical predictions. We argue that the discrepancy between the theory and numerical data is due to the absence of the self-averaging of transmission quantities. This complicates the analytical analysis of the disordered systems. Finally, theoretical methods of description of weakly disordered systems are explained and their possible generalization to the localized regime is discussed. Since we concentrate on the one-electron propagation at zero temperature, no effects of electron-electron interaction and incoherent scattering are discussed in the paper (Author)

  15. AREST model description

    Energy Technology Data Exchange (ETDEWEB)

    Engel, D.W.; McGrail, B.P.

    1993-11-01

    The Office of Civilian Radioactive Waste Management and the Power Reactor and Nuclear Fuel Development Corporation of Japan (PNC) have supported the development of the Analytical Repository Source-Term (AREST) at Pacific Northwest Laboratory. AREST is a computer model developed to evaluate radionuclide release from an underground geologic repository. The AREST code can be used to calculate/estimate the amount and rate of each radionuclide that is released from the engineered barrier system (EBS) of the repository. The EBS is the man-made or disrupted area of the repository. AREST was designed as a system-level models to simulate the behavior of the total repository by combining process-level models for the release from an individual waste package or container. AREST contains primarily analytical models for calculating the release/transport of radionuclides to the lost rock that surrounds each waste package. Analytical models were used because of the small computational overhead that allows all the input parameters to be derived from a statistical distribution. Recently, a one-dimensional numerical model was also incorporated into AREST, to allow for more detailed modeling of the transport process with arbitrary length decay chains. The next step in modeling the EBS, is to develop a model that couples the probabilistic capabilities of AREST with a more detailed process model. This model will need to look at the reactive coupling of the processes that are involved with the release process. Such coupling would include: (1) the dissolution of the waste form, (2) the geochemical modeling of the groundwater, (3) the corrosion of the container overpacking, and (4) the backfill material, just to name a few. Several of these coupled processes are already incorporated in the current version of AREST.

  16. AREST model description

    International Nuclear Information System (INIS)

    Engel, D.W.; McGrail, B.P.

    1993-11-01

    The Office of Civilian Radioactive Waste Management and the Power Reactor and Nuclear Fuel Development Corporation of Japan (PNC) have supported the development of the Analytical Repository Source-Term (AREST) at Pacific Northwest Laboratory. AREST is a computer model developed to evaluate radionuclide release from an underground geologic repository. The AREST code can be used to calculate/estimate the amount and rate of each radionuclide that is released from the engineered barrier system (EBS) of the repository. The EBS is the man-made or disrupted area of the repository. AREST was designed as a system-level models to simulate the behavior of the total repository by combining process-level models for the release from an individual waste package or container. AREST contains primarily analytical models for calculating the release/transport of radionuclides to the lost rock that surrounds each waste package. Analytical models were used because of the small computational overhead that allows all the input parameters to be derived from a statistical distribution. Recently, a one-dimensional numerical model was also incorporated into AREST, to allow for more detailed modeling of the transport process with arbitrary length decay chains. The next step in modeling the EBS, is to develop a model that couples the probabilistic capabilities of AREST with a more detailed process model. This model will need to look at the reactive coupling of the processes that are involved with the release process. Such coupling would include: (1) the dissolution of the waste form, (2) the geochemical modeling of the groundwater, (3) the corrosion of the container overpacking, and (4) the backfill material, just to name a few. Several of these coupled processes are already incorporated in the current version of AREST

  17. Numerical Analysis Objects

    Science.gov (United States)

    Henderson, Michael

    1997-08-01

    The Numerical Analysis Objects project (NAO) is a project in the Mathematics Department of IBM's TJ Watson Research Center. While there are plenty of numerical tools available today, it is not an easy task to combine them into a custom application. NAO is directed at the dual problems of building applications from a set of tools, and creating those tools. There are several "reuse" projects, which focus on the problems of identifying and cataloging tools. NAO is directed at the specific context of scientific computing. Because the type of tools is restricted, problems such as tools with incompatible data structures for input and output, and dissimilar interfaces to tools which solve similar problems can be addressed. The approach we've taken is to define interfaces to those objects used in numerical analysis, such as geometries, functions and operators, and to start collecting (and building) a set of tools which use these interfaces. We have written a class library (a set of abstract classes and implementations) in C++ which demonstrates the approach. Besides the classes, the class library includes "stub" routines which allow the library to be used from C or Fortran, and an interface to a Visual Programming Language. The library has been used to build a simulator for petroleum reservoirs, using a set of tools for discretizing nonlinear differential equations that we have written, and includes "wrapped" versions of packages from the Netlib repository. Documentation can be found on the Web at "http://www.research.ibm.com/nao". I will describe the objects and their interfaces, and give examples ranging from mesh generation to solving differential equations.

  18. Numerical differential protection

    CERN Document Server

    Ziegler, Gerhard

    2012-01-01

    Differential protection is a fast and selective method of protection against short-circuits. It is applied in many variants for electrical machines, trans?formers, busbars, and electric lines.Initially this book covers the theory and fundamentals of analog and numerical differential protection. Current transformers are treated in detail including transient behaviour, impact on protection performance, and practical dimensioning. An extended chapter is dedicated to signal transmission for line protection, in particular, modern digital communication and GPS timing.The emphasis is then pla

  19. Numerical derivation in optimization

    International Nuclear Information System (INIS)

    Abadie, J.; Salhi, Y.

    1988-01-01

    Newton's method for function minimization possesses an outstanding property. Its final quadratic convergence under very weak hypothesis, but also some drawbacks, among which (i) the possibility of non convergence when starting far from the solution sought and (ii) the necessity of computing (and then programming) the first and second partial derivatives. We show in this paper how to avoid both difficulties, assuming however that the first partial derivatives are computed by exact formulae. The second partial derivatives are computed by central differences of first derivatives. The difference step h is calculated so as to establish a trade-off between accuracy and computation speed. Encouraging numerical experiments support the proposed method [fr

  20. Seasonal cycle of Martian climate : Experimental data and numerical simulation

    NARCIS (Netherlands)

    Rodin, A. V.; Willson, R. J.

    2006-01-01

    The most adequate theoretical method of investigating the present-day Martian climate is numerical simulation based on a model of general circulation of the atmosphere. First and foremost, such models encounter the greatest difficulties in description of aerosols and clouds, which in turn

  1. Confidence in Numerical Simulations

    International Nuclear Information System (INIS)

    Hemez, Francois M.

    2015-01-01

    This PowerPoint presentation offers a high-level discussion of uncertainty, confidence and credibility in scientific Modeling and Simulation (M&S). It begins by briefly evoking M&S trends in computational physics and engineering. The first thrust of the discussion is to emphasize that the role of M&S in decision-making is either to support reasoning by similarity or to ''forecast,'' that is, make predictions about the future or extrapolate to settings or environments that cannot be tested experimentally. The second thrust is to explain that M&S-aided decision-making is an exercise in uncertainty management. The three broad classes of uncertainty in computational physics and engineering are variability and randomness, numerical uncertainty and model-form uncertainty. The last part of the discussion addresses how scientists ''think.'' This thought process parallels the scientific method where by a hypothesis is formulated, often accompanied by simplifying assumptions, then, physical experiments and numerical simulations are performed to confirm or reject the hypothesis. ''Confidence'' derives, not just from the levels of training and experience of analysts, but also from the rigor with which these assessments are performed, documented and peer-reviewed.

  2. Numerical trials of HISSE

    Science.gov (United States)

    Peters, C.; Kampe, F. (Principal Investigator)

    1980-01-01

    The mathematical description and implementation of the statistical estimation procedure known as the Houston integrated spatial/spectral estimator (HISSE) is discussed. HISSE is based on a normal mixture model and is designed to take advantage of spectral and spatial information of LANDSAT data pixels, utilizing the initial classification and clustering information provided by the AMOEBA algorithm. The HISSE calculates parametric estimates of class proportions which reduce the error inherent in estimates derived from typical classify and count procedures common to nonparametric clustering algorithms. It also singles out spatial groupings of pixels which are most suitable for labeling classes. These calculations are designed to aid the analyst/interpreter in labeling patches with a crop class label. Finally, HISSE's initial performance on an actual LANDSAT agricultural ground truth data set is reported.

  3. INTRA/Mod3.2. Manual and Code Description. Volume I - Physical Modelling

    Energy Technology Data Exchange (ETDEWEB)

    Andersson, Jenny; Edlund, O.; Hermann, J.; Johansson, Lise-Lotte

    1999-01-01

    The INTRA Manual consists of two volumes. Volume I of the manual is a thorough description of the code INTRA, the Physical modelling of INTRA and the ruling numerical methods and volume II, the User`s Manual is an input description. This document, the Physical modelling of INTRA, contains code characteristics, integration methods and applications

  4. Multiparticle model for the description of the neutron-production in the plasma focus

    International Nuclear Information System (INIS)

    Ruhs, N.

    Following a comparison of the various numerical methods the experimental set-up is described. This is followed by a brief description of the MHD computation on which the particle computation is to be based. A description is given of the methods applied for the particle computation

  5. INTRA/Mod3.2. Manual and code description. Volume 2 - User`s manual

    Energy Technology Data Exchange (ETDEWEB)

    Andersson, Jenny; Edlund, O.; Hermann, J.; Johansson, Lise-Lotte

    1999-01-01

    The INTRA Manual consists of two volumes. Volume I of the manual is a thorough description of the code INTRA, the physical modelling of INTRA and the ruling numerics, and volume II, the User`s Manual is an input description. This document, the User`s Manual, Volume II, contains a detailed description of how to use INTRA, how to set up an input file, how to run INTRA and also post-processing

  6. Numerical relativity beyond astrophysics

    Science.gov (United States)

    Garfinkle, David

    2017-01-01

    Though the main applications of computer simulations in relativity are to astrophysical systems such as black holes and neutron stars, nonetheless there are important applications of numerical methods to the investigation of general relativity as a fundamental theory of the nature of space and time. This paper gives an overview of some of these applications. In particular we cover (i) investigations of the properties of spacetime singularities such as those that occur in the interior of black holes and in big bang cosmology. (ii) investigations of critical behavior at the threshold of black hole formation in gravitational collapse. (iii) investigations inspired by string theory, in particular analogs of black holes in more than 4 spacetime dimensions and gravitational collapse in spacetimes with a negative cosmological constant.

  7. Testability of numerical systems

    International Nuclear Information System (INIS)

    Soulas, B.

    1992-01-01

    In order to face up to the growing complexity of systems, the authors undertook to define a new approach for the qualification of systems. This approach is based on the concept of Testability which, supported by system modelization, validation and verification methods and tools, would allow Integrated Qualification process, applied throughout the life-span of systems. The general principles of this approach are introduced in the general case of numerical systems; in particular, this presentation points out the difference between the specification activity and the modelization and validation activity. This approach is illustrated firstly by the study of a global system and then by case of communication protocol as the software point of view. Finally MODEL which support this approach is described. MODEL tool is a commercial tool providing modelization and validation techniques based on Petri Nets with triple extension: Predicate/Transition, Timed and Stochastic Petri Nets

  8. Numerical relativity beyond astrophysics.

    Science.gov (United States)

    Garfinkle, David

    2017-01-01

    Though the main applications of computer simulations in relativity are to astrophysical systems such as black holes and neutron stars, nonetheless there are important applications of numerical methods to the investigation of general relativity as a fundamental theory of the nature of space and time. This paper gives an overview of some of these applications. In particular we cover (i) investigations of the properties of spacetime singularities such as those that occur in the interior of black holes and in big bang cosmology. (ii) investigations of critical behavior at the threshold of black hole formation in gravitational collapse. (iii) investigations inspired by string theory, in particular analogs of black holes in more than 4 spacetime dimensions and gravitational collapse in spacetimes with a negative cosmological constant.

  9. Modelling object typicality in description logics - [Workshop on Description Logics

    CSIR Research Space (South Africa)

    Britz, K

    2009-07-01

    Full Text Available The authors presents a semantic model of typicality of concept members in description logics that accords well with a binary, globalist cognitive model of class membership and typicality. The authors define a general preferential semantic framework...

  10. Análisis de creencias sobre el rol docente en estudiantes chilenos de pedagogía en inglés a través de la metáfora conceptual

    Directory of Open Access Journals (Sweden)

    Paola Alarcón Hernández

    2015-09-01

    Full Text Available Esta investigación de tipo cualitativo tiene como objetivo analizar las categorías metafóricas sobre el rol docente en estudiantes de pedagogía en inglés de una universidad chilena. Se describen las metáforas conceptuales en un grupo de 1.er año y en uno de 5.º año relativas a: 1 sus creencias sobre la imagen social del rol docente y 2 su imagen sobre el rol del profesor de inglés. Al interior de cada grupo, se comparan las categorías de metáforas obtenidas. Luego se establecen diferencias en las categorías de metáforas entre los estudiantes de 1.er y 5.º año. El marco conceptual en el que se inscribe el estudio es la metáfora conceptual, tal como ha sido abordada por la lingüística cognitiva. En la metodología, para la elicitación de metáforas, se aplicó un cuestionario; luego se realizó un análisis de contenido, que abarcó las siguientes etapas: categorización, clasificación y juicio de externos. Con respecto a los resultados sobre la imagen social del rol docente, se identificaron metáforas centradas en el proceso de enseñanza y aprendizaje. Además, en ambos grupos, los sujetos muestran tener conciencia de la minusvaloración social que recibe la profesión docente. Con respecto a rol del profesor de inglés, en el grupo de 1.er año, la categoría más numerosa es la que configura el rol del profesor como transmisor de conocimientos. En el grupo de estudiantes de 5.º, hay un predominio de las metáforas centradas en el estudiante.

  11. Using PASCAL for numerical analysis

    Science.gov (United States)

    Volper, D.; Miller, T. C.

    1978-01-01

    The data structures and control structures of PASCAL enhance the coding ability of the programmer. Proposed extensions to the language further increase its usefulness in writing numeric programs and support packages for numeric programs.

  12. Computing the Alexander Polynomial Numerically

    DEFF Research Database (Denmark)

    Hansen, Mikael Sonne

    2006-01-01

    Explains how to construct the Alexander Matrix and how this can be used to compute the Alexander polynomial numerically.......Explains how to construct the Alexander Matrix and how this can be used to compute the Alexander polynomial numerically....

  13. Numerical relativity; La relatividad numerica

    Energy Technology Data Exchange (ETDEWEB)

    Alcubierre, M.

    2015-07-01

    Today the numerical relativity has developed numerical techniques and an understanding of the structure of the field equations and terms of coordinates, as well as an explosion in speed and memory capacity of supercomputers, make it possible to simulate the collision of black holes with masses and different spins in gravitational orbits. It has also allowed to study in detail the collapse and collision of stars neutrons.la numerical relativity has allowed other both numerical and theoretical studies. (Author)

  14. Numerical reactor evaluation

    International Nuclear Information System (INIS)

    Venter, A.M.

    1973-08-01

    A short discussion is given of the physics of a nuclear reactor and the parameters which are used in the study of neutron transport. The mathematical formulation and detailed derivation is given of the neutron diffusion and transport equations. A description is given of the computer programmes, FIRE-5 and PELSN, developed at Pelindaba for the evaluation of both thermal and fast reactor systems. It is indicated how these computer programmes have been applied in the study of the PELINDUNA-O and other known critical facilities. The application of Lie-series to the solution of the neutron diffusion equation is discussed in detail. The time dependence of the variables is removed by means of a Laplacetransformation and the semi-analytical solution is written in terms of a transfer matrix. A complete set of recursion formulae, applicable to both homogeneous and heterogeneous reactor systems, is derived. The method used in the evaluation of the effective multiplication factor, k-eff, and the alpha-eigen-value is described. A computer programme was written to solve the neutron diffusion equation in terms of the Lie-series. The results are compared with the TIMOC and PELSN computer programmes. A method is suggested in which the Lie-series are used to solve the neutron transport equation. The transfer matrix for this case, is derived. A complete discussion is given of the solution to the space and time dependent diffusion equation in the presence of a delta source [af

  15. Handbook of Manufacturing Control Fundamentals, description, configuration

    CERN Document Server

    Lödding, Hermann

    2013-01-01

    This first-time English publication of one of Germany’s leading manufacturing control handbooks provides a comprehensive overview of the state of the art, with detailed and easy to understand descriptions of numerous control techniques from Kanban to CONWIP to Backlog Control. Based on the proven funnel model and written for the industry, this book clearly illustrates how companies can use manufacturing control to effectively improve on-time delivery, reduce inventories and cut down throughput times. “This book distinguishes itself with its convincing systematic approach based on thorough international research. Its clear presentation and direct applicability for analysing and configuring the manufacturing control make this handbook an outstanding and unique publication on PPC.” Hans-Peter Wiendahl “The field of manufacturing control is very convincingly reviewed and presented from a theoretical and methodological perspective. Both researchers as well as practitioners will profit from it.” Peter N...

  16. Numerical model SMODERP

    Science.gov (United States)

    Kavka, P.; Jeřábek, J.; Strouhal, L.

    2016-12-01

    The contribution presents a numerical model SMODERP that is used for calculation and prediction of surface runoff and soil erosion from agricultural land. The physically based model includes the processes of infiltration (Phillips equation), surface runoff routing (kinematic wave based equation), surface retention, surface roughness and vegetation impact on runoff. The model is being developed at the Department of Irrigation, Drainage and Landscape Engineering, Civil Engineering Faculty, CTU in Prague. 2D version of the model was introduced in last years. The script uses ArcGIS system tools for data preparation. The physical relations are implemented through Python scripts. The main computing part is stand alone in numpy arrays. Flow direction is calculated by Steepest Descent algorithm and in multiple flow algorithm. Sheet flow is described by modified kinematic wave equation. Parameters for five different soil textures were calibrated on the set of hundred measurements performed on the laboratory and filed rainfall simulators. Spatially distributed models enable to estimate not only surface runoff but also flow in the rills. Development of the rills is based on critical shear stress and critical velocity. For modelling of the rills a specific sub model was created. This sub model uses Manning formula for flow estimation. Flow in the ditches and streams are also computed. Numerical stability of the model is controled by Courant criterion. Spatial scale is fixed. Time step is dynamic and depends on the actual discharge. The model is used in the framework of the project "Variability of Short-term Precipitation and Runoff in Small Czech Drainage Basins and its Influence on Water Resources Management". Main goal of the project is to elaborate a methodology and online utility for deriving short-term design precipitation series, which could be utilized by a broad community of scientists, state administration as well as design planners. The methodology will account for

  17. Detector Description Framework in LHCb

    CERN Document Server

    Ponce, Sébastien

    2003-01-01

    The Gaudi architecture and framework are designed to provide a common infrastructure and environment for simulation, filtering, reconstruction and analysis applications. In this context, a Detector Description Service was developed in LHCb in order to also provide easy and coherent access to the description of the experimental apparatus. This service centralizes every information about the detector, including geometry, materials, alignment, calibration, structure and controls. From the proof of concept given by the first functional implementation of this service late 2000, the Detector Description Service has grown and has become one of the major components of the LHCb software, shared among all applications, including simulation, reconstruction, analysis and visualization. We describe here the full and functional implementation of the service. We stress the easiness of customization and extension of the detector description by the user, on the seamless integration with condition databases in order to handle ...

  18. MFIX documentation numerical technique

    Energy Technology Data Exchange (ETDEWEB)

    Syamlal, M.

    1998-01-01

    MFIX (Multiphase Flow with Interphase eXchanges) is a general-purpose hydrodynamic model for describing chemical reactions and heat transfer in dense or dilute fluid-solids flows, which typically occur in energy conversion and chemical processing reactors. The calculations give time-dependent information on pressure, temperature, composition, and velocity distributions in the reactors. The theoretical basis of the calculations is described in the MFIX Theory Guide. Installation of the code, setting up of a run, and post-processing of results are described in MFIX User`s manual. Work was started in April 1996 to increase the execution speed and accuracy of the code, which has resulted in MFIX 2.0. To improve the speed of the code the old algorithm was replaced by a more implicit algorithm. In different test cases conducted the new version runs 3 to 30 times faster than the old version. To increase the accuracy of the computations, second order accurate discretization schemes were included in MFIX 2.0. Bubbling fluidized bed simulations conducted with a second order scheme show that the predicted bubble shape is rounded, unlike the (unphysical) pointed shape predicted by the first order upwind scheme. This report describes the numerical technique used in MFIX 2.0.

  19. Personalized numerical observer

    Science.gov (United States)

    Brankov, Jovan G.; Pretorius, P. Hendrik

    2010-02-01

    It is widely accepted that medical image quality should be assessed using task-based criteria, such as humanobserver (HO) performance in a lesion-detection (scoring) task. HO studies are time consuming and cost prohibitive to be used for image quality assessment during development of either reconstruction methods or imaging systems. Therefore, a numerical observer (NO), a HO surrogate, is highly desirable. In the past, we have proposed and successfully tested a NO based on a supervised-learning approach (namely a support vector machine) for cardiac gated SPECT image quality assessment. In the supervised-learning approach, the goal is to identify the relationship between measured image features and HO myocardium defect likelihood scores. Thus far we have treated multiple HO readers by simply averaging or pooling their respective scores. Due to observer variability, this may be suboptimal and less accurate. Therefore, in this work, we are setting our goal to predict individual observer scores independently in the hope to better capture some relevant lesion-detection mechanism of the human observers. This is even more important as there are many ways to get equivalent observer performance (measured by area under receiver operating curve), and simply predicting some joint (average or pooled) score alone is not likely to succeed.

  20. Orientación al rol de género y uso de tabaco y alcohol en jóvenes de Morelos, México Gender role orientation and tobacco and alcohol use among youth in Morelos, Mexico

    OpenAIRE

    Rubén Chávez-Ayala; Leonor Rivera-Rivera; Ahideé Leyva-López; Marcela Sánchez-Estrada; Eduardo Lazcano-Ponce

    2013-01-01

    OBJETIVO: Cuantificar la asociación entre orientación al rol de género y uso de tabaco y alcohol en jóvenes del estado de Morelos. MATERIAL Y MÉTODOS: Estudio transversal realizado en 2004-2005, en jóvenes de 14 a 24 años (n=1 730). Variables sociodemográficas (zona de residencia, nivel socioeconómico); familiares (educación y violencia paternal); psicosociológicas (rol de género, autoestima, depresión, consumo de alcohol, tabaco, locus de control, abuso sexual). Análisis por regresión logíst...

  1. Benign rolandic epilepsy: clinical and electroencephalographic correlates Epilepsia rolândica benigna: correlações clínicas e eletrencefalográficas

    Directory of Open Access Journals (Sweden)

    RUDIMAR DOS SANTOS RIESGO

    2000-09-01

    Full Text Available Benign rolandic epilepsy (BRE is known for its dissociation from structural alterations. Nevertheless, the number of cases with reported organic lesions has been increasing. This led to the creation of two subgroups, "benign" and "non benign" BRE, and resulted in the need for additional parameters to define electrographic benignity. We assessed the possible associations between interictal electroencephalographic findings and clinical behavior in 60 BRE cases, testing four parameters of electrographic benignity (paroxysm morphology, horizontal dipole, base rhythms, laterality of rolandic spikes. We also assessed the relationship between neuroimaging findings and electrographic and clinical classifications, and found a statistically significant association (sensitivity=73.5%; specificity=81.8%; positive predictive value=94.8%; negative predictive value=40.9%. Three of the electrographic parameters proposed were associated with clinical classification: paroxysm morphology, horizontal dipole, and base rhythms. Cases electrographically classified as benign have 21 times more chances to be equally classified as clinically benign according with the tested criteria.A epilepsia rolândica benigna da infância (ERBI é conhecida por não estar associada a alterações estruturais. Contudo, tem aumentado o número de casos com lesões orgânicas. Tal fato levou à criação de dois subgrupos, "benigno" e "não benigno", e criou a necessidade de definir parâmetros adicionais de benignidade eletrográfica. Nós avaliamos as possíveis associações entre achados do EEG interictal e comportamento clínico em 60 casos de ERBI, testando quatro parâmetros de benignidade eletrográfica (morfologia do paroxismo, dipolo horizontal, ritmos de base e lateralidade das pontas rolândicas. Também foi avaliada a associação entre os achados de neuroimagem e as classificações eletrográfica e clínica; encontrou-se uma associação estatisticamente significativa

  2. TOOLS FOR COLABORATIVE LEARNING: A ROLE-PLAYING PRACTICE HERRAMIENTAS PARA EL APRENDIZAJE COLABORATIVO: UNA APLICACIÓN PRÁCTICA DEL JUEGO DE ROL

    Directory of Open Access Journals (Sweden)

    Marta Ortiz-de-Urbina Criado

    2010-11-01

    Full Text Available Role-playing is an active participation tool that facilitates cooperative learning. It has also proved to be more effective in developing competencies than traditional methods. This technique is essential to make theory and practice compatible as is required in order to adapt subjects to the new education system based on the Bolonia’s agreement, especially in Social Sciences disciplines. Consequently, the objective of this paper is to show the effect and use of role-playing applied to management area. Therefore, we analyze and design the role-playing, putting it in practice in the classroom in Human Resource Management subject of different academic degrees. To conclude, this paper has shown the importance of role-playing as a learning tool and development of skills like work cooperation, problem and conflict solving, decision making, and managing complex systems.El juego de rol es una herramienta de participación activa del alumno que facilita el aprendizaje cooperativo y que puede ser más efectiva que los métodos tradicionales para la formación en competencias. Esta técnica es esencial para compatibilizar la teoría y la práctica que se requiere para la adaptación de las asignaturas al EEES, en especial las que pertenecen al ámbito de Ciencias Sociales. Por ello, el objetivo de este trabajo es demostrar el efecto y la utilidad del juego de rol en el ámbito de la Organización de Empresas. En concreto, se analiza y explica el diseño y la puesta en práctica de esta herramienta en al aula en la asignatura de ‘Dirección de Recursos Humanos’. Su utilización durante varios cursos académicos nos ha mostrado que es una herramienta útil, que facilita el aprendizaje del alumno y el desarrollo de capacidades como el trabajo en grupo, la resolución de problemas y conflictos, la toma de decisiones y la dirección de sistemas complejos.

  3. Üniversite Psikolojik Danışma ve Rehberlik Merkezleri’nin Rol ve İşlevleri: Gelişmeler ve Sınırlılıklar

    Directory of Open Access Journals (Sweden)

    Cem Ali Gizir

    2011-11-01

    Full Text Available Son yıllardaki hızlı sosyal, kültürel, ekonomik ve politik değişimlere bağlı olarak üniversite Psikolojik Danışma ve Rehberlik (PDR merkezlerinin rol ve işlevlerinde de önemli değişiklikler meydana gelmektedir. Dolayısıyla, geçmişten günümüze akademik ve kariyer gelişimi konusundaki geleneksel temel rollerinin yanı sıra son yıllardaki üniversite öğrencilerinin kişisel ve sosyal problemlerindeki değişiklikler ve artışlara bağlı olarak üniversite PDR merkezlerinin rol ve işlevlerinin yeniden değerlendirilmesi önem arz etmektedir. Bu bilgiler ışığında, özellikle Türkiye’deki üniversite PDR merkezlerinin rol ve işlevlerinin etkinleştirilmesinde yarar sağlayacağı düşünülen bu derleme çalışmasının amacı, tarihsel gelişim süreciyle birlikte ortaya çıkan ortak temalar doğrultusunda, günümüz üniversite PDR merkezlerinin rol ve işlevlerine yönelik son gelişmeler üzerine bir değerlendirme yapmak ve Uluslararası Psikolojik Danışma Hizmetleri Derneğinin (IACS akreditasyon standartları temelinde varolan sınırlılıklar ile çözüm önerilerini ortaya koymaktır.

  4. Numerical studies in geophysics

    Science.gov (United States)

    Hier Majumder, Catherine Anne

    2003-10-01

    This thesis focuses on the use of modern numerical techniques in the geo- and environmental sciences. Four topics are discussed in this thesis: finite Prandtl number convection, wavelet analysis, inverse methods and data assimilation, and nuclear waste tank mixing. The finite Prandtl number convection studies examine how convection behavior changes as Prandtl numbers are increased to as high as 2 x 104, on the order of Prandtl numbers expected in very hot magmas or mushy ice diapirs. I found that there are significant differences in the convection style between finite Prandtl number convection and the infinite Prandtl number approximation even for Prandtl numbers on the order of 104. This indicates that the infinite Prandtl convection approximation might not accurately model behavior in fluids with large, but finite Prandtl numbers. The section on inverse methods and data assimilation used the technique of four dimensional variational data assimilation (4D-VAR) developed by meteorologists to integrate observations into forecasts. It was useful in studying the predictability and dependence on initial conditions of finite Prandtl simulations. This technique promises to be useful in a wide range of geological and geophysical fields, including mantle convection, hydrogeology, and sedimentology. Wavelet analysis was used to help image and scrutinize at small-scales both temperature and vorticity fields from convection simulations and the geoid. It was found to be extremely helpful in both cases. It allowed us to separate the information in the data into various spatial scales without losing the locations of the signals in space. This proved to be essential in understanding the processes producing the total signal in the datasets. The nuclear waste study showed that techniques developed in geology and geophysics can be used to solve scientific problems in other fields. I applied state-of-the-art techniques currently employed in geochemistry, sedimentology, and mantle

  5. Evolution of the continental upper mantle : numerical modelling of thermo-chemical convection including partial melting

    NARCIS (Netherlands)

    de Smet, J.H.

    1999-01-01

    This thesis elaborates on the evolution of the continental upper mantle based on numerical modelling results. The descriptive and explanatory basis is formed by a numerical thermo-chemical convection model. The model evolution starts in the early Archaean about 4 billion years ago. The model follows

  6. Evolution of the continental upper mantle : numerical modelling of thermo-chemical convection including partial melting

    NARCIS (Netherlands)

    Smet, J.H. de

    1999-01-01

    This thesis elaborates on the evolution of the continental upper mantle based on numerical modelling results. The descriptive and explanatory basis is formed by a numerical thermo-chemical convection model. The model evolution starts in the early Archaean about 4 billion years ago. The model

  7. A numerical library in Java for scientists and engineers

    CERN Document Server

    Lau, Hang T

    2003-01-01

    At last researchers have an inexpensive library of Java-based numeric procedures for use in scientific computation. The first and only book of its kind, A Numeric Library in Java for Scientists and Engineers is a translation into Java of the library NUMAL (NUMerical procedures in ALgol 60). This groundbreaking text presents procedural descriptions for linear algebra, ordinary and partial differential equations, optimization, parameter estimation, mathematical physics, and other tools that are indispensable to any dynamic research group. The book offers test programs that allow researchers to execute the examples provided; users are free to construct their own tests and apply the numeric procedures to them in order to observe a successful computation or simulate failure. The entry for each procedure is logically presented, with name, usage parameters, and Java code included. This handbook serves as a powerful research tool, enabling the performance of critical computations in Java. It stands as a cost-effi...

  8. Search across Different Media: Numeric Data Sets and Text Files

    Directory of Open Access Journals (Sweden)

    Michael Buckland

    2006-12-01

    Full Text Available Digital technology encourages the hope of searching across and between different media forms (text, sound, image, numeric data. Topic searches are described in two different media: text files and socioeconomic numeric databases and also for transverse searching, whereby retrieved text is used to find topically related numeric data and vice versa. Direct transverse searching across different media is impossible. Descriptive metadata provide enabling infrastructure, but usually require mappings between different vocabularies and a search-term recommender system. Statistical association techniques and natural-language processing can help. Searches in socioeconomic numeric databases ordinarily require that place and time be specified.

  9. TYPES OF SCIENTIFIC DESCRIPTIONS IN ROMANIAN GEOGRAPHY TEXTBOOKS

    Directory of Open Access Journals (Sweden)

    VIORICA BLÎNDA

    2012-01-01

    Full Text Available This study will provide a brief look into the numerous aspects of description as a unit of discourse and into the/as well as into those/distinctive discourse methods. The perspectives of the proposed analysis emphasize that description as a unit of discourse is no longer denigrated and that it has regained its well-defined place within the discourse (especially within the discourse of geography as a primary unit of discourse. The analysis is based on a corpus of studies represented by texts of geography available in geography textbooks. Through this study there will be outlined a number of methods and strategies of the discursive process through description.

  10. Waste receiving and processing plant control system; system design description

    International Nuclear Information System (INIS)

    LANE, M.P.

    1999-01-01

    The Plant Control System (PCS) is a heterogeneous computer system composed of numerous sub-systems. The PCS represents every major computer system that is used to support operation of the Waste Receiving and Processing (WRAP) facility. This document, the System Design Description (PCS SDD), includes several chapters and appendices. Each chapter is devoted to a separate PCS sub-system. Typically, each chapter includes an overview description of the system, a list of associated documents related to operation of that system, and a detailed description of relevant system features. Each appendice provides configuration information for selected PCS sub-systems. The appendices are designed as separate sections to assist in maintaining this document due to frequent changes in system configurations. This document is intended to serve as the primary reference for configuration of PCS computer systems. The use of this document is further described in the WRAP System Configuration Management Plan, WMH-350, Section 4.1

  11. Waste receiving and processing plant control system; system design description

    Energy Technology Data Exchange (ETDEWEB)

    LANE, M.P.

    1999-02-24

    The Plant Control System (PCS) is a heterogeneous computer system composed of numerous sub-systems. The PCS represents every major computer system that is used to support operation of the Waste Receiving and Processing (WRAP) facility. This document, the System Design Description (PCS SDD), includes several chapters and appendices. Each chapter is devoted to a separate PCS sub-system. Typically, each chapter includes an overview description of the system, a list of associated documents related to operation of that system, and a detailed description of relevant system features. Each appendice provides configuration information for selected PCS sub-systems. The appendices are designed as separate sections to assist in maintaining this document due to frequent changes in system configurations. This document is intended to serve as the primary reference for configuration of PCS computer systems. The use of this document is further described in the WRAP System Configuration Management Plan, WMH-350, Section 4.1.

  12. Filosofía política en acción. El juego de rol como estrategia de enseñanza

    Directory of Open Access Journals (Sweden)

    Rafael Rodríguez Prieto

    2016-01-01

    comienzan su carrera profesional sin alcanzar unas competencias discursivas básicas y conocimientos filosóicos. El propósito del juego de rol fue suministrar un tipo de recursos educativos adicionales que permitan alcanzar un nivel esperado para estudiantes de grado en el tiempo más corto posible. La intervención educativa se desarrolló en dos grupos correspondientes a la asignatura de filosofía política. Se representaron diferentes discursos políticos correspondientes con los contenidos estudiados en clase y leídos por los estudiantes. Profesores y estudiantes evaluaron el debate e hicieron preguntas acerca de las diferentes propuestas políticas defendidas por cada uno de los grupos. El propósito fue evaluar el impacto de esta metodología en el proceso de enseñanza y aprendizaje. Este trabajo analiza la efectividad de la experiencia y discute sus debilidades y fortalezas. El resultado de la evaluación fue exitoso desde una perspectiva cuantitativa y cualitativa. La mayoría de los estudiantes obtuvieron más de un siete. También mejoraron sus habilidades analíticas y orales.

  13. Análisis temático sobre la fibromialgia en la prensa escrita Argentina: descripciones generales y el rol de la psicología

    Directory of Open Access Journals (Sweden)

    Mercedes Sarudiansky

    2016-03-01

    Full Text Available Desde su conceptualización en 1990, la Fibromialgia (FM ha sido discutida en términos de su validez como diagnóstico, su definición como enfermedad y sus tratamientos. Estas cuestiones han sido abordadas por diferentes disciplinas biomédicas y sociales, entre las cuales se incluyen la psicología, la psiquiatría, la antropología y la sociología. En este trabajo, indagaremos cómo se difunden los saberes respecto de la FM en Argentina, a través de un análisis temático de los artículos referentes a este síndrome publicados en la prensa escrita. Analizaremos la manera en que las notas periodísticas describen a la FM – características generales, hipótesis causales, y tratamientos – y reflexionaremos respecto de cómo estos medios abordan el rol de la psicología en el tratamiento de esta dolencia.

  14. Entre héroes y traidores: Sentidos militares y militantes acerca del rol de los conscriptos en los años 70

    Directory of Open Access Journals (Sweden)

    Santiago Garaño

    2011-06-01

    Full Text Available En este trabajo analizaremos cómo las autoridades militares argentinas concibieron el rol que los conscriptos debían jugar en la autodenominada “lucha contra la subversión”, en el contexto de violencia política previo al golpe de estado del 24 de marzo de 1976. En primer lugar, mostraremos que los soldados que cumplían el servicio militar obligatorio fueron interpelados no sólo por el Ejército sino también por el PRT-ERP, apelando en ambos casos a los valores morales del 'heroísmo' y del 'sacrificio' de la propia vida. En segundo lugar, argumentaremos que el personal militar fundó una lógica binaria “héroe”-”traidor” como parámetro para juzgar moralmente las conductas de los conscriptos. Por último, postularemos que se apuntaló ese código moral utilizando ideas de pureza, contaminación y peligro.

  15. Composition en acide alphalinolénique des esters de cholestérol plasmatiques : un marqueur de consommation chez l’homme

    Directory of Open Access Journals (Sweden)

    Combe Nicole

    2002-07-01

    Full Text Available Le lien existant entre qualité et quantité des acides gras de l’alimentation, et santé est de plus en plus évident et défini, comme l’indique la revue des travaux plus spécifiquement consacrés aux implications dans le risque de maladies cardiovasculaires (MCV (cf. premier exposé de ce dossier. Néanmoins, si un grand nombre d’études épidémiologiques ou d’intervention ont permis d’aboutir à un consensus qui s’est traduit, en France, par la publication en 2001 des Apports Nutritionnels Conseillés [1], un débat perdure au sein de la communauté scientifique internationale sur les meilleurs apports en acides gras monoinsaturés versus poly-insaturés [2, 3]. Les études récentes de Rudel et al. [4-6] indiquent en effet que des singes nourris avec un régime très enrichi en acide oléique (18:1n-9 : 24% de l’apport énergétique développent une athérosclérose des artères coronaires qui pourrait être en relation avec l’accumulation subséquente d’oléate de cholestérol dans les LDL aux dépens du linoléate de cholestérol. Par ailleurs, eu égard aux effets bénéfiques reconnus à l’acide alphalinolénique (18:3n-3 vis-à-vis des risques d’infarctus du myocarde, de cardiopathie ischémique [7-9] et d’accident vasculaire cérébral [10, 11], le niveau de 18:3n-3 dans les esters de cholestérol (EC du plasma apparaît comme un bon indicateur de protection. En effet, l’étude conduite par Sandker et al. [12], sur deux groupes d’hommes âgés, issus des cohortes crétoises (Seven Countries Study et hollandaises (Zutphen Study, a permis de faire émerger l’intérêt de ce marqueur biologique. En moyenne, le pourcentage de 18:3n-3 mesuré dans les EC plasmatiques des Crétois était significativement plus élevé comparé à celui des Hollandais (0,9% vs 0,32% des acides gras, dont la cohorte présentait un taux de mortalité coronarienne 5 fois plus grand que celui de la cohorte crétoise. En outre, l

  16. Agrobacterium pRi TL-DNA rolB and TR-DNA Opine Genes Transferred to the Spiny Amaranth (Amaranthus spinosus L., A Nutraceutical Crop

    Directory of Open Access Journals (Sweden)

    Ajantaa Pal

    2013-01-01

    Full Text Available In vitro rhizogenesis occurred with a characteristic pattern typical of transformed roots following explant (internode/leaf inoculation of Amaranthus spinosus L. with four different wild type Agrobacterium rhizogenes strains. The extent of rhizogenesis varied considerably with the explant type and source, and with the Agrobacterium strains employed; internodal segments performed better than leaves. Of the strains employed for cocultivation, A. rhizogenes LBA 9402 carrying pRi 1855 was the most virulent and infectious, causing hairy root induction in the maximum number of explants regardless of their type. Individual root clones (rhizoclones were maintained on Murashige and Skoog's basal medium without growth regulators. The physical presence of the rolB gene in the TL-DNA segment of the Ri plasmid of the infecting Agrobacterium in leaf tissues of plants regenerated from selected rhizoclones was confirmed by a positive PCR amplification. The ability of the genetically transformed plants to harbour and express TR-DNA specific opine synthase genes (man2 and ags was substantiated by PCR and opine assay respectively, demonstrating the production of characteristic opines. Such findings are implicated in the context of pharmaceutical exploitation of transformed root cultures of A. spinosus and also towards protecting this nutraceutically important crop, amaranth, against biotic stress challenges via transgenic manipulations.

  17. Las muchachas ahorrativas: El rol de las mujeres peronistas en el Plan Económico de Austeridad y el 2º Plan Quinquenal

    Directory of Open Access Journals (Sweden)

    Carolina Barry

    2004-11-01

    Full Text Available En este trabajo propongo analizar el rol asignado a las mujeres peronistas y a las unidades básicas femeninas del Partido Peronista Femenino como promotoras del ahorro y la economía doméstica dentro del Plan Económico de Austeridad y el 2º Plan Quinquenal. Luego de la amplia confirmación de la popularidad del gobierno obtenida en las elecciones de noviembre de 1951, el presidente Perón consideró oportuno producir una rectificación y un ajuste en el rumbo de la política económica. Se trataba de una serie de medidas imprescindibles para superar una coyuntura que se tornaba crítica, y que se resumían en el aumento de la producción y la austeridad en el consumo. Esta última responsabilidad recayó en la mujeres - amas de casa amparadas en la acción de las unidades básicas femeninas que actuaron como consejeras y promotoras de los planes de austeridad implementando una serie de medidas que iban desde la cursos de cocina que enseñaban a cocinar con productos alternativos y más económicos hasta la fiscalización de los comercios que no cumplían con los precios máximos oficiales.

  18. La integración petrolera en América Latina: el rol de ARPEL como comunidad epistémica

    Directory of Open Access Journals (Sweden)

    Susana Yazbek

    2013-01-01

    Full Text Available El propósito de este trabajo es analizar el rol que desempeñó ARPEL en el proceso de integración regio- nal del sector petrolero en América Latina. A partir del concepto de “comunidades epistémicas”, exa- minaremos la historia de ARPEL desde 1965 hasta el año 2000. Inicialmente ARPEL -Asistencia Recípro- ca Petrolera Estatal Latinoamericana- reunía a las empresas petroleras estatales cuando fue fundada en 1965, luego, en la década de 1990, completó su transformación y fue incorporando entre sus miembros a empresas privadas y cambió su denominación -en 1993: Asistencia Recíproca Petrolera Empresarial Latinoamericana, y en 1998: Asociación Regional de Empresas de Petróleo y Gas Natural en Latinoa- mérica y el Caribe-.

  19. El rol del lugar y el capital social en la resiliencia comunitaria posdesastre: Aproximaciones mediante un estudio de caso después del terremoto del 27/F

    Directory of Open Access Journals (Sweden)

    Claudia González-Muzzio

    2013-05-01

    Full Text Available Generar comunidades urbanas resilientes a los desastres es una necesidad, debido a que la mayor parte de la población vive en ciudades y estas son altamente vulnerables a la ocurrencia de tales eventos. Mediante un estudio de caso en el contexto urbano, se analiza el rol del lugar y del capital social en el período de emergencia luego del terremoto del 27 de febrero de 2010 en Chile. Los resultados indican que ambos factores modificaron fuertemente la resiliencia inherente de la ciudad y de su comunidad. Al verse sobrepasada inicialmente la capacidad de absorber los impactos generados por el evento, los habitantes de las zonas afectadas se vieron obligados a adaptarse rápidamente a la nueva situación, aprovechando para ello los recursos disponibles en el área. El surgimiento de nuevos grupos y comportamiento emergentes, así como las características del lugar, contribuyeron positivamente a mejorar la resiliencia adaptativa de la comunidad. Estos factores deben considerarse en la planificación y/o reconstrucción de ciudades con mayores niveles de resiliencia.

  20. Mujeres mayas familiares de migrantes: los retos de su rol de apoyo en la construcción de casas de remesas

    Directory of Open Access Journals (Sweden)

    Ruth Piedrasanta Herrera

    2010-12-01

    Full Text Available A partir del proyecto ‘Arquitectura de remesas’, auspiciado por la cooperación española y en el cual colaboró la autora de estas líneas, se ha enfocado la transformación en los espacios domésticos en áreas indígenas con altas tasas de expulsión migratoria, donde aparece el papel fundamental que juegan las familias extensas como unainsustituible red de apoyo al migrante. Sobre todo se advierte el rol de las mujeres que rodean al hombre que migra (caso más recurrente y los importantes cambios que se ven impulsadas a realizar al convertirse en las delegadas más confiables en la concreción de los planes y sueños de quienes se han ido. Esto otorga a las mujeres una posición de poder y las enfrenta a retos que deben resolver de una uotra manera (toma de decisiones importantes, administración y gestión de recursos,contacto con la tecnología, etc..Este artículo comentará estos cambios que pueden ser enfocados como parte de las remesas sociales o como parte de un capital social transferido a las comunidades de origen de los migrantes y que en este caso particular concierne a la capacidad de agencia exigida a las mujeres en este proceso.

  1. How to Circumvent Church Numerals

    DEFF Research Database (Denmark)

    Goldberg, Mayer; Torgersen, Mads

    2002-01-01

    In this work we consider a standard numeral system in the lambda-calculus, and the elementary arithmetic and Boolean functions and predicates defined on this numeral system, and show how to construct terms that "circumvent" or "defeat" these functions: The equality predicate is satisfied when...... comparing these special terms to any numeral, the zero predicate is satisfied for these terms, etc. We believe this exercise offers an instructive look at what definability means in the untyped lambda-calculus....

  2. CANISTER HANDLING FACILITY DESCRIPTION DOCUMENT

    International Nuclear Information System (INIS)

    Beesley. J.F.

    2005-01-01

    The purpose of this facility description document (FDD) is to establish requirements and associated bases that drive the design of the Canister Handling Facility (CHF), which will allow the design effort to proceed to license application. This FDD will be revised at strategic points as the design matures. This FDD identifies the requirements and describes the facility design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This FDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This FDD is part of an iterative design process. It leads the design process with regard to the flowdown of upper tier requirements onto the facility. Knowledge of these requirements is essential in performing the design process. The FDD follows the design with regard to the description of the facility. The description provided in this FDD reflects the current results of the design process

  3. CANISTER HANDLING FACILITY DESCRIPTION DOCUMENT

    Energy Technology Data Exchange (ETDEWEB)

    J.F. Beesley

    2005-04-21

    The purpose of this facility description document (FDD) is to establish requirements and associated bases that drive the design of the Canister Handling Facility (CHF), which will allow the design effort to proceed to license application. This FDD will be revised at strategic points as the design matures. This FDD identifies the requirements and describes the facility design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This FDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This FDD is part of an iterative design process. It leads the design process with regard to the flowdown of upper tier requirements onto the facility. Knowledge of these requirements is essential in performing the design process. The FDD follows the design with regard to the description of the facility. The description provided in this FDD reflects the current results of the design process.

  4. Fuel Handling Facility Description Document

    International Nuclear Information System (INIS)

    M.A. LaFountain

    2005-01-01

    The purpose of the facility description document (FDD) is to establish the requirements and their bases that drive the design of the Fuel Handling Facility (FHF) to allow the design effort to proceed to license application. This FDD is a living document that will be revised at strategic points as the design matures. It identifies the requirements and describes the facility design as it currently exists, with emphasis on design attributes provided to meet the requirements. This FDD was developed as an engineering tool for design control. Accordingly, the primary audience and users are design engineers. It leads the design process with regard to the flow down of upper tier requirements onto the facility. Knowledge of these requirements is essential to performing the design process. It trails the design with regard to the description of the facility. This description is a reflection of the results of the design process to date

  5. Representation of Numerical and Non-Numerical Order in Children

    Science.gov (United States)

    Berteletti, Ilaria; Lucangeli, Daniela; Zorzi, Marco

    2012-01-01

    The representation of numerical and non-numerical ordered sequences was investigated in children from preschool to grade 3. The child's conception of how sequence items map onto a spatial scale was tested using the Number-to-Position task (Siegler & Opfer, 2003) and new variants of the task designed to probe the representation of the alphabet…

  6. Description du langage scientifique (Description of Scientific Language)

    Science.gov (United States)

    Widdowson, H. G.

    1977-01-01

    A description of scientific language using three approaches: text, textualization, and discourse. Scientific discourse is analogous to universal deep structure; text, to surface variations in diverse languages; and textualization, to transformational processes. The relationship of the primary and secondary (scientific) cultures and their languages…

  7. Auteur Description: From the Director's Creative Vision to Audio Description

    Science.gov (United States)

    Szarkowska, Agnieszka

    2013-01-01

    In this report, the author follows the suggestion that a film director's creative vision should be incorporated into Audio description (AD), a major technique for making films, theater performances, operas, and other events accessible to people who are blind or have low vision. The author presents a new type of AD for auteur and artistic films:…

  8. Numerical simulations of coupled problems in engineering

    CERN Document Server

    2014-01-01

    This book presents and discusses mathematical models, numerical methods and computational techniques used for solving coupled problems in science and engineering. It takes a step forward in the formulation and solution of real-life problems with a multidisciplinary vision, accounting for all of the complex couplings involved in the physical description. Simulation of multifaceted physics problems is a common task in applied research and industry. Often a suitable solver is built by connecting together several single-aspect solvers into a network. In this book, research in various fields was selected for consideration: adaptive methodology for multi-physics solvers, multi-physics phenomena and coupled-field solutions, leading to computationally intensive structural analysis. The strategies which are used to keep these problems computationally affordable are of special interest, and make this an essential book.

  9. Numerical investigation of a Hall thruster plasma

    International Nuclear Information System (INIS)

    Roy, Subrata; Pandey, B.P.

    2002-01-01

    The dynamics of the Hall thruster is investigated numerically in the framework of a one-dimensional, multifluid macroscopic description of a partially ionized xenon plasma using finite element formulation. The model includes neutral dynamics, inelastic processes, and plasma-wall interaction. Owing to disparate temporal scales, ions and neutrals have been described by set of time-dependent equations, while electrons are considered in steady state. Based on the experimental observations, a third order polynomial in electron temperature is used to calculate ionization rate. The results show that in the acceleration channel the increase in the ion number density is related to the decrease in the neutral number density. The electron and ion velocity profiles are consistent with the imposed electric field. The electron temperature remains uniform for nearly two-thirds of the channel; then sharply increases to a peak before dropping slightly at the exit. This is consistent with the predicted electron gyration velocity distribution

  10. Analytical and Numerical Approaches to Mathematical Relativity

    Energy Technology Data Exchange (ETDEWEB)

    Stewart, John M [Department of Applied Mathematics and Theoretical Physics-CMS, Wilberforce Road, Cambridge CB3 0BA (United Kingdom)

    2007-08-07

    The 319th Wilhelm-and-Else-Heraeus Seminar 'Mathematical Relativity: New Ideas and Developments' took place in March 2004. Twelve of the invited speakers have expanded their one hour talks into the papers appearing in this volume, preceded by a foreword by Roger Penrose. The first group consists of four papers on 'differential geometry and differential topology'. Paul Ehrlich opens with a very witty review of global Lorentzian geometry, which caused this reviewer to think more carefully about how he uses the adjective 'generic'. Robert Low addresses the issue of causality with a description of the 'space of null geodesics' and a tentative proposal for a new definition of causal boundary. The underlying review of global Lorentzian geometry is continued by Antonio Masiello, looking at variational approaches (actually valid for more general semi-Riemannian manifolds). This group concludes with a very clear review of pp-wave spacetimes from Jose Flores and Miguel Sanchez. (This reviewer was delighted to see a reproduction of Roger Penrose's seminal (1965) picture of null geodesics in plane wave spacetimes which attracted him into the subject.) Robert Beig opens the second group 'analytic methods and differential equations' with a brief but careful discussion of symmetric (regular) hyperbolicity for first (second) order systems, respectively, of partial differential equations. His description is peppered with examples, many specific to relativstic continuum mechanics. There follows a succinct review of linear elliptic boundary value problems with applications to general relativity from Sergio Dain. The numerous examples he provides are thought-provoking. The 'standard cosmological model' has been well understood for three quarters of a century. However recent observations suggest that the expansion in our Universe may be accelerating. Alan Rendall provides a careful discussion of the changes, both

  11. Numerical Analysis of Bridge Girder with Composite Dowel Shear Connection

    Science.gov (United States)

    Lacki, Piotr; Nawrot, Jacek

    2017-12-01

    The work presents a brief description of VFT-WIB® steel-concrete composite beams, examples of composite dowel shear connection shapes are presented. A steel-concrete bridge girder construction solution for the new shape of composite dowel shear connection was proposed. The geometric parameters of the steel section web cutting line are given. For the assumed cross-section dimensions, a numerical model of the girder was made. Numerical analysis was performed, the results of which were compared with the results of the analytical calculations. A program of actions aimed at further optimization of the model is presented.

  12. Numerical Modeling of Micro Fluidics of Polymer Melts

    DEFF Research Database (Denmark)

    Marin, José Manuel Román; Rasmussen, Henrik K.

    2008-01-01

    A new Galerkin finite element scheme for the numerical simulation of three-dimensional time-dependent flow of K-BKZ fluids has been developed. The scheme was used to model the polymer melt flow in nano imprint lithography (NIL). In NIL a sub micrometer pattern is hot pressed onto a thin polymer...... film on a hard substrate. The numerical method is based on a Lagrangian kinematics description of the fluid, where the (Cartesian) coordinate system attached to the particles is discretized by ten-node quadratic tetrahedral elements. The time integral in the K-BKZ model is discretized by a quadratic...

  13. Numerical method of entangled state selection in association of molecules

    Science.gov (United States)

    Arakelov, K. S.; Ozhigov, Yu. I.

    2008-03-01

    We represent the economy method of separation of the entangled states of GHZ and W types which arise in the process of association of a single molecule. It makes possible to separate these types of quantum states in the simulation of real processes like the association of molecular ion of hydrogen by means of existing computers with the strictly limited memory. Numerical realization of this method is in process; we represent the semiclassical part of it, that is based on Landau-Ziner description of the association of molecules. Results of statistical processing of the row of numerical experiments are shown.

  14. Wind conditions in urban layout - Numerical and experimental research

    Science.gov (United States)

    Poćwierz, Marta; Zielonko-Jung, Katarzyna

    2018-01-01

    This paper presents research which compares the numerical and the experimental results for different cases of airflow around a few urban layouts. The study is concerned mostly with the analysis of parameters, such as pressure and velocity fields, which are essential in the building industry. Numerical simulations have been performed by the commercial software Fluent, with the use of a few different turbulence models, including popular k-ɛ, k-ɛ realizable or k-ω. A particular attention has been paid to accurate description of the conditions on the inlet and the selection of suitable computing grid. The pressure measurement near buildings and oil visualization were undertaken and described accordingly.

  15. El rol del transporte público alternativo motorizado en la ciudad / The role of motorized paratransit in the city

    Directory of Open Access Journals (Sweden)

    Rosa Isabel Amorós Zurita

    2013-01-01

    Full Text Available ResumenEl trabajo de investigación presenta una aproximación global sobre las diversas pautas de comportamiento del transporte público alternativo. Es decir, se pretende, a través de la realización de una investigación meramente descriptiva, identificar las diferentes características físicas y de operación de este tipo de transporte en la ciudad. Su estructura incluye el análisis de conceptos y clasificaciones relacionados al transporte público alternativo, la presentación de dos experiencias distintas sobre la utilización de la motocicleta a tres ruedas, uno de los principales tipos de transporte público alternativo motorizado, y finalmente los principales efectos positivos y negativos que causa su circulación a nivel urbano, ambiental, social y económico. Los resultados obtenidos permiten a las instituciones relacionadas con el transporte reflexionar sobre la posibilidad fortalecer esta propuesta de movilidad, necesaria especialmente en países en vías de desarrollo.Palabras claveTransporte público alternativo, ciudad, movilidad.AbstractThis research work presents a new global approach on various paratransit’s behavior patterns in the city. That is to say, through a descriptive research, to allow identifying the physical and operational characteristics of motorized paratransit in the city. The research structure includes the analysis of paratransit’s concepts and classifications, the exposure of two different experiences based on the three-wheeled motorcycle use, one of the main motorized paratransit’s types, and finally its main positive and negative effects in an urban, environmental, social and economic level. The results that were obtained allow transport institutions to reflect on the possibility of strengthen this mobility proposal, required especially in developing countries.KeywordsParatransit, city, mobility.

  16. The influence of numerical models on determining the drag coefficient

    Directory of Open Access Journals (Sweden)

    Dobeš Josef

    2014-03-01

    Full Text Available The paper deals with numerical modelling of body aerodynamic drag coefficient in the transition from laminar to turbulent flow regimes, where the selection of a suitable numerical model is problematic. On the basic problem of flow around a simple body – sphere selected computational models are tested. The values obtained by numerical simulations of drag coefficients of each model are compared with the graph of dependency of the drag coefficient vs. Reynolds number for a sphere. Next the dependency of Strouhal number vs. Reynolds number is evaluated, where the vortex shedding frequency values for given speed are obtained numerically and experimentally and then the values are compared for each numerical model and experiment. The aim is to specify trends for the selection of appropriate numerical model for flow around bodies problem in which the precise description of the flow field around the obstacle is used to define the acoustic noise source. Numerical modelling is performed by finite volume method using CFD code.

  17. Numerical Approaches to Spacetime Singularities

    Directory of Open Access Journals (Sweden)

    Beverly K. Berger

    1998-05-01

    Full Text Available This review updates a previous review article. Numerical explorationof the properties of singularities could, in principle, yield detailed understanding of their nature in physically realistic cases. Examples of numerical investigations into the formation of naked singularities, critical behavior in collapse, passage through the Cauchy horizon, chaos of the Mixmaster singularity, and singularities in spatially inhomogeneous cosmologies are discussed.

  18. How to Circumvent Church Numerals

    DEFF Research Database (Denmark)

    Goldberg, Mayer; Torgersen, Mads

    2002-01-01

    In this work we consider a standard numeral system in the lambda-calculus, and the elementary arithmetic and Boolean functions and predicates defined on this numeral system, and show how to construct terms that "circumvent" or "defeat" these functions: The equality predicate is satisfied when com...

  19. Geotechnical Description of Mineral Deposits

    Directory of Open Access Journals (Sweden)

    Sasvári Tibor

    1996-06-01

    Full Text Available Performing various mineral deposits extraction methods requires thorough knowledge of the rock masses` geomechanical parameters. In the geotechnical description of mineral deposits there is proposed a methodical approarch at the collection, registration, and evaluation of rock masses` geological properties for geotechnics being applied within the mining industry.

  20. Natural Language Description of Emotion

    Science.gov (United States)

    Kazemzadeh, Abe

    2013-01-01

    This dissertation studies how people describe emotions with language and how computers can simulate this descriptive behavior. Although many non-human animals can express their current emotions as social signals, only humans can communicate about emotions symbolically. This symbolic communication of emotion allows us to talk about emotions that we…

  1. Task descriptions versus use cases

    DEFF Research Database (Denmark)

    Lauesen, Søren; Kuhail, Mohammad Amin

    2011-01-01

    project: Acquire a new system to support a hotline. Among the 15 replies, eight used traditional use cases that specified a dialog between user and system. Seven used a related technique, task description, which specified the customer’s needs without specifying a dialog. It also allowed the analyst...

  2. The geometry description markup language

    International Nuclear Information System (INIS)

    Chytracek, R.

    2001-01-01

    Currently, a lot of effort is being put on designing complex detectors. A number of simulation and reconstruction frameworks and applications have been developed with the aim to make this job easier. A very important role in this activity is played by the geometry description of the detector apparatus layout and its working environment. However, no real common approach to represent geometry data is available and such data can be found in various forms starting from custom semi-structured text files, source code (C/C++/FORTRAN), to XML and database solutions. The XML (Extensible Markup Language) has proven to provide an interesting approach for describing detector geometries, with several different but incompatible XML-based solutions existing. Therefore, interoperability and geometry data exchange among different frameworks is not possible at present. The author introduces a markup language for geometry descriptions. Its aim is to define a common approach for sharing and exchanging of geometry description data. Its requirements and design have been driven by experience and user feedback from existing projects which have their geometry description in XML

  3. Marketing and Merchandising, Course Description.

    Science.gov (United States)

    Boyer, Jerome L.; Anderson, Floyd L.

    This course description was developed by educators for use at the Work Opportunity Center which was established to teach high school dropouts and/or hard-core unemployed youth. The ultimate objectives of the marketing and merchandising curriculum are to prepare students for careers in distribution and to assist them in graduating from high school.…

  4. Use cases versus task descriptions

    DEFF Research Database (Denmark)

    Lauesen, Søren; Kuhail, Mohammad Amin

    2011-01-01

    to specify require-ments for the same project: Acquire a new system to support a hotline. [Princi-pal ideas/results] Among the 15 replies, eight used traditional use cases that specified a dialog between users and system. Seven used a related technique, task description, which specified the customer's needs...

  5. Epsilon. A System Description Language

    DEFF Research Database (Denmark)

    Jensen, Kurt; Kyng, Morten

    This paper discusses the use of Petri nets as a semantic tool in the design of languages and in the construction and analysis of system descriptions. The topics treated are: -- Languages based on nets. -- The problem of time in nets. -- Nets and related models. -- Nets and formal semantics...

  6. Numerical simulation of turbulent atmospheric boundary layer flows

    Energy Technology Data Exchange (ETDEWEB)

    Bennes, L.; Bodnar, T.; Kozel, K.; Sladek, I. [Czech Technical Univ., Prague (Czech Republic). Dept. of Technical Mathematics; Fraunie, P. [Universite Toulon et du Var, La Garde (France). Lab. de Sondages Electromagnetiques de l' Environment Terrestre

    2001-07-01

    The work deals with the numerical solution of viscous turbulent steady flows in the atmospheric boundary layer including pollution propagation. For its description we use two different mathematical models: - a model based on the Reynolds averaged Navier-Stokes equations for incompressible flows - a model based on a system of boundary layer equations. These systems are completed by two transport equations for the concentration of passive pollutants and the potential temperature in conservative form, respectively, and by an algebraic turbulence model. (orig.)

  7. DESCRIPTIVE GRADES IN INITIAL MATHEMATICAL TEACHING PARENTS' ATTITUDES

    Directory of Open Access Journals (Sweden)

    Dževad Burgić

    2014-04-01

    Full Text Available Evaluation is very sensitive process in up bring-education work and it is important for comprehensive development of student. More often are fears of different kind, certain forms of unacceptable behavior, are connected with students failure in school and with school evaluation.Grade is feedback on achievements whose purpose is to provide timely information of current level and the steps that are ahead. Numerical grade reflects level of achievements, but there is no indication about elements that makes that grade. Descriptive grade contains key information's about the progress and for that kind of grade you need a lot of words. For student to be descriptively graded, teacher needs to be professionally educated and ready for detailed monitoring and evaluation of student's achievements. Teacher, using appropriate terminology, should successfully describe achievements of student's progress. The school is expected to teach students how to learn and to prepare them for lifelong learning. One of the important factors is also parents. During the time spent with teachers and parents a need has be shown to examine parent's attitudes about descriptive grades in nine-year elementary school. One of the courses that a descriptive grade cannot fully characterize the overall progress of students is mathematics. This course has been chosen because of the problems that parents have when their kids are in first two grades of nine-year elementary school, their attitudes about descriptive grades and difficulties they have when they try to understand student's achievements.

  8. DESCRIPTIVE GRADES IN INITIAL MATHEMATICAL TEACHING PARENT'S ATTITUDES

    Directory of Open Access Journals (Sweden)

    Dževad Burgić

    2014-04-01

    Full Text Available Evaluation is very sensitive process in up bring-education work and it is important for comprehensive development of student. More often are fears of different kind, certain forms of unacceptable behavior, are connected with students failure in school and with school evaluation.Grade is feedback on achievements whose purpose is to provide timely information of current level and the steps that are ahead. Numerical grade reflects level of achievements, but there is no indication about elements that makes that grade. Descriptive grade contains key information's about the progress and for that kind of grade you need a lot of words. For student to be descriptively graded, teacher needs to be professionally educated and ready for detailed monitoring and evaluation of student's achievements. Teacher, using appropriate terminology, should successfully describe achievements of student's progress. The school is expected to teach students how to learn and to prepare them for lifelong learning. One of the important factors is also parents. During the time spent with teachers and parents a need has be shown to examine parent's attitudes about descriptive grades in nine-year elementary school. One of the courses that a descriptive grade cannot fully characterize the overall progress of students is mathematics. This course has been chosen because of the problems that parents have when their kids are in first two grades of nine-year elementary school, their attitudes about descriptive grades and difficulties they have when they try to understand student's achievements.

  9. CRACUK model description (appendices to the CRAC2 model description)

    International Nuclear Information System (INIS)

    Nixon, W.; Egan, M.J.

    1986-08-01

    The CRACUK computer code is a revised version of the US consequence modelling code CRAC2, adapted to suit UK requirements. The revisions include modifications to the models for spatial interval representation, weather sequence sampling, atmospheric dispersion, dosimetry and countermeasures. This document describes, in the form of appendices to the CRAC2 model description, each of the revisions made to the original model which collectively distinguish CRACUK from CRAC2. (author)

  10. Research of descriptions of collinear aerial receiving system ADS-B by numeral methods

    Directory of Open Access Journals (Sweden)

    В. П. Харченко

    2013-07-01

    Full Text Available Calculations of electric field intensity and directional diagrammes for colinear antennas using a method of moments in the framework of two program complexes are carried out. Comparison has shown high level of results coincidence. The sample of the antenna which is used in operating system for reception of ADS-B signals from airborne transponders is constructed

  11. Deriving numerical estimates from descriptive information: the computation of earthquake parameters

    Directory of Open Access Journals (Sweden)

    G. Ferrari

    2000-06-01

    Full Text Available We describe here how the origin time, the epicenter location, the epicentral intensity and the magnitude of the earthquakes included in the Catalogue of Strong Italian Earthquakes (CFTI3 have been determined from the documentary information available. As the literature lacks widely accepted formal definitions for these parameters in the case of macroseismic data, we developed ad hoc procedures that starting from generally shared qualitative statements give reasonable and stable results which can also be useful for statistical analysis. These procedures use all of the information available in the CFTI3 database as much as possible and make use of "robust" estimators in order to minimize the effects of anomalous data. The resulting parametric catalogue has been examined statistically for completeness showing that the great majority of the Italian earthquakes with moment magnitude larger that 5.5-6.0 of the last four centuries are correctly reported in CFTI3.

  12. Fiches techniques Les triacylglycérols des huiles de graines de quatre Cucurbitacées tropicales des genres Lagenaria et Luffa

    Directory of Open Access Journals (Sweden)

    Grondin Isabelle

    2002-03-01

    Full Text Available Les huiles de graines de quatre Cucurbitacées tropicales de l’île de la Réunion, provenant respectivement de deux variétés de l’espèce Lagenaria leucaritha (calebasses bouteille et la gale et de deux espèces du genre Luffa (pipangailles lisse et à côtes, ont été analysées aussi bien pour la fraction saponifiable que pour la fraction insaponifiable. L’étude de la fraction saponifiable a été consacrée, d’une part, à la détermination de la composition quantitative et qualitative en acides gras des différentes huiles dont les résultats ont fait l’objet d’une publication antérieure [1] et, d’autre part, à celle de leurs triacylglycérols. Une comparaison des compositions en acides gras des deux genres étudiés a permis de mettre en évidence les spécificités propres à chaque genre. Les genres Lagenaria et Luffa, présentant une composition en acides gras qualitativement similaire, contiennent ainsi les AG couramment rencontrés dans le règne végétal, à savoir les acides palmitique, stéarique, oléique et linoléique. Ce dernier est, par ailleurs, l’acide gras majoritaire avec des teneurs supérieures à 50%. La présence de cet acide gras essentiel confère ainsi à ces huiles de bonnes propriétés diététiques et nutritionnelles. Au sein du genre Lagenaria, les huiles des graines des variétés bouteille et la gale se caractérisent par leur teneur élevée en acide linoléique (71,5% pour la variété bouteille, et 81,5% pour la variété la gale. Les huiles de Lagenaria leucaritha sont du type palmitique-linoléique car ces deux acides gras représentent quantitativement plus de 85% des AG totaux. Contrairement à ces deux huiles, celles du genre Luffa se différencient, d’une part, par une teneur moindre en acide linoléique avec 55,3% pour l’espèce Luffa acutangula et 51,2% pour l’espèce Luffa cylindrica. D’autre part, elles sont du type palmitique-oléique-linoléique puisque ces trois

  13. Numerical Hydrodynamics in General Relativity

    Directory of Open Access Journals (Sweden)

    Font José A.

    2000-05-01

    Full Text Available The current status of numerical solutions for the equations of ideal general relativistic hydrodynamics is reviewed. Different formulations of the equations are presented, with special mention of conservative and hyperbolic formulations well-adapted to advanced numerical methods. A representative sample of available numerical schemes is discussed and particular emphasis is paid to solution procedures based on schemes exploiting the characteristic structure of the equations through linearized Riemann solvers. A comprehensive summary of relevant astrophysical simulations in strong gravitational fields, including gravitational collapse, accretion onto black holes and evolution of neutron stars, is also presented.

  14. Rol de la pareja en el proceso de rehabilitación de personas con discapacidad física por situaciones de guerra

    Directory of Open Access Journals (Sweden)

    Maritza Alexandra Rincón Díaz

    2010-01-01

    Full Text Available Objetivo: este artículo estudia el rol de la pareja en el proceso de rehabilitación de uno de sus miembros con lesión medular, producida por herida en actos del servicio como integrante del Ejército de Colombia. Método. se realizó un estudio cualitativo de tipo descriptivo, no estructurado con una única unidad muestral. Se contó con la participación voluntaria de una familia de estrato socioeconómico medio-bajo (esposos y dos hijos. Se evaluaron tres aspectos con base en el modelo sistémico de la enfermedad propuesto por Rolland (2000: intimidad, comunicación y manejo de asimetrías. Resultados: los resultados resaltan la capacidad para mantener el equilibrio entre autonomía personal e intimidad, como factor protector; la conversación abierta sobre la enfermedad y sus demandas garantiza una mejor adaptación a la discapacidad. La posibilidad de que la persona en situación de discapacidad se mantenga productiva, y de que la pareja encuentre formas creativas para el manejo de las limitaciones en el área sexual, se constituyen en temas clave en el proceso. Conclusiones: se pretende que estos hallazgos sean de utilidad para el trabajo terapéutico al interior de las Fuerzas Militares, con quienes afrontan pérdidas como las aquí descritas y se generen acciones que potencien patrones de interacción que promuevan la resiliencia personal, familiar y conyugal.

  15. Psicología, Ética y Seguridad Nacional: El Rol de los Psicólogos Psychology, Ethics and National Security: The Role of Psychologists

    Directory of Open Access Journals (Sweden)

    Elizabeth Lira

    2008-11-01

    Full Text Available Los interrogatorios abusivos y las torturas en Abu Ghraib en Irak y en la Bahía de Guantánamo en Cuba han generado preocupaciones éticas sobre la participación de los psicólogos en los interrogatorios, asficomo en la investigación y entrenamiento requerido en la lucha contra el terrorismo. Este ensayo describe la evolución y las preocupaciones respecto de este debate en la Asociación Americana de Psicólogos, incluyendo los cambios ocurridos después del referéndum de Septiembre de 2008 y la aprobación de una nueva política que prohíbe que los psicólogos se involucren en interrogatorios en los recintos de detención. El texto incluye algunas referencias a la lucha contra la tortura bajo el régimen militar en Chile (1973-1990 y concluye con algunas reflexiones acerca del rol de los psicólogos, el bien común y los regímenes de seguridad nacional.Abusive interrogation and torture atAbu Ghraib in Iraq and Guantanamo Bay in Cuba have raised ethical concerns about the participation of psychologists in interrogation, research, and training associated with the fight against terrorism. This essay describes the evolution and concerns on this debate within the American Psychological Association, including the changes introduced following the referendum of September 2008 that approved a new policy against any involvement of psychologists in interrogation or any other procedures at detention sites. The text includes some references on the struggle against torture under the military regime in Chile (1973-1990 and concludes with some reΚections on the role of psychologists, common good and regimes of national security.

  16. Continuum description for jointed media

    International Nuclear Information System (INIS)

    Thomas, R.K.

    1982-04-01

    A general three-dimensional continuum description is presented for a material containing regularly spaced and approximately parallel jointing planes within a representative elementary volume. Constitutive relationships are introduced for linear behavior of the base material and nonlinear normal and shear behavior across jointing planes. Furthermore, a fracture permeability tensor is calculated so that deformation induced alterations to the in-situ values can be measured. Examples for several strain-controlled loading paths are presented

  17. GROUNDWATER PROTECTION MANAGEMENT PROGRAM DESCRIPTION.

    Energy Technology Data Exchange (ETDEWEB)

    PAQUETTE,D.E.; BENNETT,D.B.; DORSCH,W.R.; GOODE,G.A.; LEE,R.J.; KLAUS,K.; HOWE,R.F.; GEIGER,K.

    2002-05-31

    THE DEPARTMENT OF ENERGY ORDER 5400.1, GENERAL ENVIRONMENTAL PROTECTION PROGRAM, REQUIRES THE DEVELOPMENT AND IMPLEMENTATION OF A GROUNDWATER PROTECTION PROGRAM. THE BNL GROUNDWATER PROTECTION MANAGEMENT PROGRAM DESCRIPTION PROVIDES AN OVERVIEW OF HOW THE LABORATORY ENSURES THAT PLANS FOR GROUNDWATER PROTECTION, MONITORING, AND RESTORATION ARE FULLY DEFINED, INTEGRATED, AND MANAGED IN A COST EFFECTIVE MANNER THAT IS CONSISTENT WITH FEDERAL, STATE, AND LOCAL REGULATIONS.

  18. Forsmark - site descriptive model version 0

    International Nuclear Information System (INIS)

    2002-10-01

    During 2002, the Swedish Nuclear Fuel and Waste Management Company (SKB) is starting investigations at two potential sites for a deep repository in the Precambrian basement of the Fennoscandian Shield. The present report concerns one of those sites, Forsmark, which lies in the municipality of Oesthammar, on the east coast of Sweden, about 150 kilometres north of Stockholm. The site description should present all collected data and interpreted parameters of importance for the overall scientific understanding of the site, for the technical design and environmental impact assessment of the deep repository, and for the assessment of long-term safety. The site description will have two main components: a written synthesis of the site, summarising the current state of knowledge, as documented in the databases containing the primary data from the site investigations, and one or several site descriptive models, in which the collected information is interpreted and presented in a form which can be used in numerical models for rock engineering, environmental impact and long-term safety assessments. The site descriptive models are devised and stepwise updated as the site investigations proceed. The point of departure for this process is the regional site descriptive model, version 0, which is the subject of the present report. Version 0 is developed out of the information available at the start of the site investigation. This information, with the exception of data from tunnels and drill holes at the sites of the Forsmark nuclear reactors and the underground low-middle active radioactive waste storage facility, SFR, is mainly 2D in nature (surface data), and is general and regional, rather than site-specific, in content. For this reason, the Forsmark site descriptive model, version 0, as detailed in the present report, has been developed at a regional scale. It covers a rectangular area, 15 km in a southwest-northeast and 11 km in a northwest-southeast direction, around the

  19. Personality: Description, Classification and Evaluation

    Directory of Open Access Journals (Sweden)

    Ibrahim Taymur

    2012-06-01

    Full Text Available Many descriptions and classifications of personality have been made to understand and acknowledge human being through out the history. During the developmental process of psychiatry, almost every school defined and assessed personality regarding to their own perspective. As DSM (Diagnostical and Statistical Manual of Mental Disorders and ICD (International Classification of Diseases being available to common usage, scientists conducted studies to set a common terminology for personality. Categorical and dimensional approaches are the most fundamentally different assessment strategies in the research and clinical aspects about personality. While categorical approach views the personality as dichotomies which consists of different groups, dimensional approach aims to describe the personality on the basis of dimensions, thus suggests that the personality is a structure formed by definite dimensions. Several advantages and disadvantages can be noticed when descriptions of personality and tools for the evaluation of personality are reviewed. When the section making suggestions about personality disorder in DSM-5 is evaluated, it is seen that it aims to restructure the personality disorder diagnostic group according to new findings and critiques. In this article, the description of personality throughout the history, dimensional, categorical and cognitive approaches to personality, the features of the tools that are used to assess and measure the personality are reviewed.

  20. Description of fiction in Wikipedia

    Directory of Open Access Journals (Sweden)

    Alenka Šauperl

    2010-01-01

    Full Text Available Subject description of fiction in the Slovenian Cooperative On-line Bibliographic Database (COBIB is still inadequate. Participation in COBIB is granted to librarians who have successfully passed the exam. As a consequence, the number of contributing librarians is limited. However, all Slovenian librarians can collaborate in the Slovenian Wikipedia. Slovenian and foreign library science researchers have proposed the structure of subject description of fiction. An analysis of articles describing nine works of fiction in five wikipedias (English, French, Spanish, Croatian and Slovenian has shown new characteristics. Drawing on these findings, a suggestion of an optimal structure is made. An article describing a work of fiction should begin with a general introductory statement comprising the name of the author, his/her nationality and genre.Translators and original title should be written if a translation is presented. Illustrators and other contributors, the background and other specific information on the work should be added if relevant. The main body of the text should be structured in the following chapters: 1 contents, 2 collection, 3 reviews and awards, 4 editions and translations, 5 adaptations, 6 see also, 7 links and 8 sources. An "infobox: book" with Slovenian adaptation and relevant categories should be inserted. Copying these Wikipedia articles into the library catalogue would enhance subject description and provide better subject access to fiction.

  1. Numerical modeling of economic uncertainty

    DEFF Research Database (Denmark)

    Schjær-Jacobsen, Hans

    2007-01-01

    Representation and modeling of economic uncertainty is addressed by different modeling methods, namely stochastic variables and probabilities, interval analysis, and fuzzy numbers, in particular triple estimates. Focusing on discounted cash flow analysis numerical results are presented, comparisons...

  2. BCJ numerators from reduced Pfaffian

    Energy Technology Data Exchange (ETDEWEB)

    Du, Yi-Jian [Center for Theoretical Physics, School of Physics and Technology, Wuhan University,No. 299 Bayi Road, Wuhan 430072 (China); Teng, Fei [Department of Physics and Astronomy, University of Utah,115 South 1400 East, Salt Lake City, UT 84112 (United States)

    2017-04-07

    By expanding the reduced Pfaffian in the tree level Cachazo-He-Yuan (CHY) integrands for Yang-Mills (YM) and nonlinear sigma model (NLSM), we can get the Bern-Carrasco-Johansson (BCJ) numerators in Del Duca-Dixon-Maltoni (DDM) form for arbitrary number of particles in any spacetime dimensions. In this work, we give a set of very straightforward graphic rules based on spanning trees for a direct evaluation of the BCJ numerators for YM and NLSM. Such rules can be derived from the Laplace expansion of the corresponding reduced Pfaffian. For YM, the each one of the (n−2)! DDM form BCJ numerators contains exactly (n−1)! terms, corresponding to the increasing trees with respect to the color order. For NLSM, the number of nonzero numerators is at most (n−2)!−(n−3)!, less than those of several previous constructions.

  3. Numerical Verification Of Equilibrium Chemistry

    International Nuclear Information System (INIS)

    Piro, Markus; Lewis, Brent; Thompson, William T.; Simunovic, Srdjan; Besmann, Theodore M.

    2010-01-01

    A numerical tool is in an advanced state of development to compute the equilibrium compositions of phases and their proportions in multi-component systems of importance to the nuclear industry. The resulting software is being conceived for direct integration into large multi-physics fuel performance codes, particularly for providing boundary conditions in heat and mass transport modules. However, any numerical errors produced in equilibrium chemistry computations will be propagated in subsequent heat and mass transport calculations, thus falsely predicting nuclear fuel behaviour. The necessity for a reliable method to numerically verify chemical equilibrium computations is emphasized by the requirement to handle the very large number of elements necessary to capture the entire fission product inventory. A simple, reliable and comprehensive numerical verification method is presented which can be invoked by any equilibrium chemistry solver for quality assurance purposes.

  4. On joint numerical radius II

    Czech Academy of Sciences Publication Activity Database

    Drnovšek, R.; Müller, Vladimír

    2014-01-01

    Roč. 62, č. 9 (2014), s. 1197-1204 ISSN 0308-1087 R&D Projects: GA ČR GA201/09/0473; GA AV ČR IAA100190903 Institutional support: RVO:67985840 Keywords : joint numerical range * numerical radius Subject RIV: BA - General Mathematics Impact factor: 0.738, year: 2014 http://www.tandfonline.com/doi/abs/10.1080/03081087.2013.816303

  5. Numerical evolutions beyond our belief

    OpenAIRE

    de Almeida, Guilherme; Colégio Militar Associação Portuguesa de Astrônomos Amadores (APAA) Lisboa – Portugal

    2014-01-01

    The everyday life situations gave us a good enough training to deal with numerical evolutions operated by arithmetic progressions, so in this specific case we can make good numerical predictions. But our common sense is not usually prepared to deal with numbers that grow, or shrink, according to geometrical progressions. In the last cases, our intuition strongly fails, showing that our intuition is not always right. We also fail in comparing some other situations which we are not trained. Thi...

  6. Numerical experiments modelling turbulent flows

    Science.gov (United States)

    Trefilík, Jiří; Kozel, Karel; Příhoda, Jaromír

    2014-03-01

    The work aims at investigation of the possibilities of modelling transonic flows mainly in external aerodynamics. New results are presented and compared with reference data and previously achieved results. For the turbulent flow simulations two modifications of the basic k - ω model are employed: SST and TNT. The numerical solution was achieved by using the MacCormack scheme on structured non-ortogonal grids. Artificial dissipation was added to improve the numerical stability.

  7. Numerical experiments modelling turbulent flows

    Directory of Open Access Journals (Sweden)

    Trefilík Jiří

    2014-03-01

    Full Text Available The work aims at investigation of the possibilities of modelling transonic flows mainly in external aerodynamics. New results are presented and compared with reference data and previously achieved results. For the turbulent flow simulations two modifications of the basic k – ω model are employed: SST and TNT. The numerical solution was achieved by using the MacCormack scheme on structured non-ortogonal grids. Artificial dissipation was added to improve the numerical stability.

  8. Numerical Analysis of Multiscale Computations

    CERN Document Server

    Engquist, Björn; Tsai, Yen-Hsi R

    2012-01-01

    This book is a snapshot of current research in multiscale modeling, computations and applications. It covers fundamental mathematical theory, numerical algorithms as well as practical computational advice for analysing single and multiphysics models containing a variety of scales in time and space. Complex fluids, porous media flow and oscillatory dynamical systems are treated in some extra depth, as well as tools like analytical and numerical homogenization, and fast multipole method.

  9. Numerical evaluation of the performance of active noise control systems

    Science.gov (United States)

    Mollo, C. G.; Bernhard, R. J.

    1990-01-01

    This paper presents a generalized numerical technique for evaluating the optimal performance of active noise controllers. In this technique, the indirect BEM numerical procedures are used to derive the active noise controllers for optimal control of enclosed harmonic sound fields where the strength of the noise sources or the description of the enclosure boundary may not be known. The performance prediction for a single-input single-output system is presented, together with the analysis of the stability and observability of an active noise-control system employing detectors. The numerical procedures presented can be used for the design of both the physical configuration and the electronic components of the optimal active noise controller.

  10. Numerical Hydrodynamics in General Relativity

    Directory of Open Access Journals (Sweden)

    Font José A.

    2003-01-01

    Full Text Available The current status of numerical solutions for the equations of ideal general relativistic hydrodynamics is reviewed. With respect to an earlier version of the article, the present update provides additional information on numerical schemes, and extends the discussion of astrophysical simulations in general relativistic hydrodynamics. Different formulations of the equations are presented, with special mention of conservative and hyperbolic formulations well-adapted to advanced numerical methods. A large sample of available numerical schemes is discussed, paying particular attention to solution procedures based on schemes exploiting the characteristic structure of the equations through linearized Riemann solvers. A comprehensive summary of astrophysical simulations in strong gravitational fields is presented. These include gravitational collapse, accretion onto black holes, and hydrodynamical evolutions of neutron stars. The material contained in these sections highlights the numerical challenges of various representative simulations. It also follows, to some extent, the chronological development of the field, concerning advances on the formulation of the gravitational field and hydrodynamic equations and the numerical methodology designed to solve them.

  11. Forsmark - site descriptive model version 0

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-10-01

    During 2002, the Swedish Nuclear Fuel and Waste Management Company (SKB) is starting investigations at two potential sites for a deep repository in the Precambrian basement of the Fennoscandian Shield. The present report concerns one of those sites, Forsmark, which lies in the municipality of Oesthammar, on the east coast of Sweden, about 150 kilometres north of Stockholm. The site description should present all collected data and interpreted parameters of importance for the overall scientific understanding of the site, for the technical design and environmental impact assessment of the deep repository, and for the assessment of long-term safety. The site description will have two main components: a written synthesis of the site, summarising the current state of knowledge, as documented in the databases containing the primary data from the site investigations, and one or several site descriptive models, in which the collected information is interpreted and presented in a form which can be used in numerical models for rock engineering, environmental impact and long-term safety assessments. The site descriptive models are devised and stepwise updated as the site investigations proceed. The point of departure for this process is the regional site descriptive model, version 0, which is the subject of the present report. Version 0 is developed out of the information available at the start of the site investigation. This information, with the exception of data from tunnels and drill holes at the sites of the Forsmark nuclear reactors and the underground low-middle active radioactive waste storage facility, SFR, is mainly 2D in nature (surface data), and is general and regional, rather than site-specific, in content. For this reason, the Forsmark site descriptive model, version 0, as detailed in the present report, has been developed at a regional scale. It covers a rectangular area, 15 km in a southwest-northeast and 11 km in a northwest-southeast direction, around the

  12. Simpevarp - site descriptive model version 0

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-11-01

    During 2002, SKB is starting detailed investigations at two potential sites for a deep repository in the Precambrian rocks of the Fennoscandian Shield. The present report concerns one of those sites, Simpevarp, which lies in the municipality of Oskarshamn, on the southeast coast of Sweden, about 250 kilometres south of Stockholm. The site description will have two main components: a written synthesis of the site, summarising the current state of knowledge, as documented in the databases containing the primary data from the site investigations, and one or several site descriptive models, in which the collected information is interpreted and presented in a form which can be used in numerical models for rock engineering, environmental impact and long-term safety assessments. SKB maintains two main databases at the present time, a site characterisation database called SICADA and a geographic information system called SKB GIS. The site descriptive model will be developed and presented with the aid of the SKB GIS capabilities, and with SKBs Rock Visualisation System (RVS), which is also linked to SICADA. The version 0 model forms an important framework for subsequent model versions, which are developed successively, as new information from the site investigations becomes available. Version 0 is developed out of the information available at the start of the site investigation. In the case of Simpevarp, this is essentially the information which was compiled for the Oskarshamn feasibility study, which led to the choice of that area as a favourable object for further study, together with information collected since its completion. This information, with the exception of the extensive data base from the nearby Aespoe Hard Rock Laboratory, is mainly 2D in nature (surface data), and is general and regional, rather than site-specific, in content. Against this background, the present report consists of the following components: an overview of the present content of the databases

  13. Simpevarp - site descriptive model version 0

    International Nuclear Information System (INIS)

    2002-11-01

    During 2002, SKB is starting detailed investigations at two potential sites for a deep repository in the Precambrian rocks of the Fennoscandian Shield. The present report concerns one of those sites, Simpevarp, which lies in the municipality of Oskarshamn, on the southeast coast of Sweden, about 250 kilometres south of Stockholm. The site description will have two main components: a written synthesis of the site, summarising the current state of knowledge, as documented in the databases containing the primary data from the site investigations, and one or several site descriptive models, in which the collected information is interpreted and presented in a form which can be used in numerical models for rock engineering, environmental impact and long-term safety assessments. SKB maintains two main databases at the present time, a site characterisation database called SICADA and a geographic information system called SKB GIS. The site descriptive model will be developed and presented with the aid of the SKB GIS capabilities, and with SKBs Rock Visualisation System (RVS), which is also linked to SICADA. The version 0 model forms an important framework for subsequent model versions, which are developed successively, as new information from the site investigations becomes available. Version 0 is developed out of the information available at the start of the site investigation. In the case of Simpevarp, this is essentially the information which was compiled for the Oskarshamn feasibility study, which led to the choice of that area as a favourable object for further study, together with information collected since its completion. This information, with the exception of the extensive data base from the nearby Aespoe Hard Rock Laboratory, is mainly 2D in nature (surface data), and is general and regional, rather than site-specific, in content. Against this background, the present report consists of the following components: an overview of the present content of the databases

  14. FURNACE; a toroidal geometry neutronic program system method description and users manual

    International Nuclear Information System (INIS)

    Verschuur, K.A.

    1984-12-01

    The FURNACE program system performs neutronic and photonic calculations in 3D toroidal geometry for application to fusion reactors. The geometry description is quite general, allowing any torus cross section and any neutron source density distribution for the plasma, as well as simple parametric representations of circular, elliptic and D-shaped tori and plasmas. The numerical method is based on an approximate transport model that produces results with sufficient accuracy for reactor-design purposes, at acceptable calculational costs. A short description is given of the numerical method, and a user manual for the programs of the system: FURNACE, ANISN-PT, LIBRA, TAPEMA and DRAWER is presented

  15. Análisis neuropsicológico de la epilepsia rolándica benigna y su comparación con el trastorno de hiperactividad en la edad escolar

    OpenAIRE

    Fournier del Castillo, Concepción

    1994-01-01

    El objetivo general de la tesis se enmarca dentro del ámbito de la neuropsicología clínica infantil, abordando dos patologías que presentan alteraciones cognitivas y conductuales sustentadas en disfunción cerebral: epilepsia rolándica benigna y trastorno por déficit de atención con hiperactividad (tdah). La evaluación neuropsicológica se llevó a cabo con la utilización de la batería luria-dni en muestras clínicas, ofreciendo amplios perfiles de competencias, que permiten establecer las habili...

  16. Orientación al rol de género y uso de tabaco y alcohol en jóvenes de Morelos, México Gender role orientation and tobacco and alcohol use among youth in Morelos, Mexico

    Directory of Open Access Journals (Sweden)

    Rubén Chávez-Ayala

    2013-02-01

    Full Text Available OBJETIVO: Cuantificar la asociación entre orientación al rol de género y uso de tabaco y alcohol en jóvenes del estado de Morelos. MATERIAL Y MÉTODOS: Estudio transversal realizado en 2004-2005, en jóvenes de 14 a 24 años (n=1 730. Variables sociodemográficas (zona de residencia, nivel socioeconómico; familiares (educación y violencia paternal; psicosociológicas (rol de género, autoestima, depresión, consumo de alcohol, tabaco, locus de control, abuso sexual. Análisis por regresión logística. RESULTADOS: Factores asociados con uso de tabaco: en mujeres, andrógina, no deseable, machista, intento de abuso sexual y zona urbana. Para hombres, depresión y sumisión. Factores asociados con uso de alcohol: en mujeres, rol masculino, y hombres, edad más de 20 años, vivir en zona semiurbana y urbana y locus interno. CONCLUSIONES: El machismo es una de las orientaciones al rol de género con mayor asociación con el uso de tabaco principalmente en las jóvenes, y la orientación masculina o instrumental se asocia con el alcohol.OBJECTIVE: To quantify the association between gender role orientation and tobacco and alcohol use among young people of the State of Morelos. MATERIALS AND METHODS: Study conducted in 2004-2005, students aged 14 to 24 years (n = 1 730. Sociodemographic variables (area of residence, socioeconomic status, family (parental education and violence, psycho-sociological (gender role, self-esteem, depression, alcohol consumption, tobacco, locus of control, sexual abuse. Logistic regression analysis. RESULTS: Factors associated with use of tobacco: In women, being androgynous undesirable, masculine role, attempted sexual abuse and urban areas. For men, depression and submission. Factors associated with alcohol use: In women, masculine gender role; and in men to be older than 20 years, living in semi-urban and urban area, and internal locus. CONCLUSIONS: The machismo is one of the gender role orientations with greater

  17. Transformation of Rhodiola rosea with rol-genes from Agrobacterium rhizogenes to enhance the production of bioactive compounds and analyses of key genes in their pathways

    DEFF Research Database (Denmark)

    Stofberg, Jimmi; Antypa, Natalia-Meropi; Müller, Renate

    to decreasing wild populations and climate changes threaten the plant further. Hence, alternatives are needed to circumvent this development. The objective of this study is to increase the content of bioactive compounds of R. rosea in planta. Transformation with root oncogenic loci (rol) genes from....... rhizogenes-mediated transformation of leaf explants to obtain HRs. It consists of two steps: a) growth of HRs in bioreactors and b) regeneration of entire plants derived from nodular tissue. Another part of the study involves gene expression analyses of key genes in the biosynthetic pathway of salidroside...... auxins and cytokinins to stimulate further root growth and nodule formation for regeneration....

  18. El rol de la escuela en la prevención y atención de la tartamudez / The role of the school in the prevention and attention of the stuttering

    OpenAIRE

    Pedro R. Rodríguez C.; Ruth Díaz Bello

    2017-01-01

    En la actualidad, el desarrollo de habilidades sociales y comunicativas son los pilares fundamentales del abordaje terapéutico de la persona que tartamudea y es, en el marco de la educación inclusiva, el contexto escolar el lugar más adecuado para su consecución, es por ello que este artículo tiene como finalidad discutir acerca del rol de la escuela en la prevención y atención de la tartamudez. Se discute acerca de la diferencia, la diversidad y la heterogeneidad en la escuela, se analizan l...

  19. Rol del amicus curiae en los procedimientos arbitrales del Centro Internacional de Arreglo de Diferencias relativas a Inversiones(CIADI) referidos a las expropiaciones en los países en desarrollo

    OpenAIRE

    Zegarra Blanco, Alejandra Fiorella

    2013-01-01

    La presente investigación busca analizar a través del estudio de varios casos el rol del Amicus Curiae en los procedimientos arbitrales de inversión, y explorar la relevancia de su participación, la cual ha servido para que el Centro Internacional de Arreglo de Diferencias Relativas a Inversiones (CIADI) adopte nuevas normas al respecto y acepte su participación a través de la presentación del informe amicus curiae. En particular se ha planteado que lejos de ocasionar un perjui...

  20. El rol del psicólogo en las instituciones: una lectura clínica en articulación con la ética profesional y la responsabilidad

    OpenAIRE

    López, Giselle A.

    2011-01-01

    El presente artículo se inscribe en el marco del proyecto de investigación UBACyT Cuestiones éticas de la psicología en el ámbito jurídico y otros contextos institucionales. Estudio exploratorio descriptivo en base a una investigación cuali- cuantitativa. (Programación científica 2010-2012. Directora: Prof. Gabriela Z. Salomone). En esta ocasión indagaremos acerca del rol del psicólogo en las instituciones, en especial en el caso de algunos dispositivos públicos y gratuitos. Para ello, analiz...

  1. El rol de las redes de apoyo transnacional en la evolución del régimen de trata de personas en la región del mekong, 2004-2015

    OpenAIRE

    Álvarez Martínez, Laura Camila

    2016-01-01

    Con el fin de la unipolaridad no sólo se fortalecieron mecanismos de gobernanza global como los Regímenes Internacionales, sino también se fortalecieron actores no estatales. A pesar de la importancia que tomaron estos dos elementos aún no existe una teoría que explique exhaustivamente la relación que existe entre ellos. Es por lo anterior que, la investigación busca responder de qué manera el rol de las Redes de Apoyo Transnacional ha incidido en la evolución del régimen de tráfico de person...

  2. Contornos y trayectorias de Internet en un país hiperconectado. El rol del Estado en la difusión tecnológica en Corea del Sur

    OpenAIRE

    Bavoleo, Bárbara Inés

    2016-01-01

    Este trabajo forma parte de una investigación más amplia financiada por el Consejo de Investigaciones Científicas y Técnicas de la República Argentina (CONICET). En el mismo se aborda la historia de internet en Corea del Sur y el rol del Estado en el proceso que condujo a una de las penetraciones extensiva e intensiva más importantes del mundo. Los planes y políticas públicas que se fueron implementando desde la década del noventa hasta la actualidad dieron como resultado uno de los entor...

  3. El efecto del job crafting y el rol mediador del burnout y el engagement sobre la relación entre las características laborales y la intención de rotar

    OpenAIRE

    Lazarte Aranguren, Luis Antonio

    2016-01-01

    El propósito de esta investigación es determinar el efecto del job crafting sobre la intención de rotar, así como comprobar el rol mediador del burnout y el engagement sobre las relaciones entre las demandas y recursos laborales respectivamente y la intención de rotar dentro de empresas de call center de Lima-Perú. Para ello, se plantearon tres hipótesis de investigación. En primer lugar, se empleó la definición de intención de rotar de Mobley et al. (1978) en el marco del modelo de demandas ...

  4. Notas para una propuesta sobre las relaciones entre familia y educación: rol de los padres en el aprendizaje de la lectura y la comprensión lectura

    Directory of Open Access Journals (Sweden)

    Juana Pinzás García

    1987-12-01

    Full Text Available Este artículo trata sobre el rol del hogar en la educación de los niños peruanos en el contexto de los factores que influyen directa o indirectamente sobre el aprendizaje. Se sugiere que la familia es un factor intermediario. Se propone que los colegios deben asumir un liderazgo en la incorporación de las familias, ayudándolas a preparar a sus niños para el aprendizaje, por ejemplo, de la lectura. Se ofrece resultados de investigaciones y comentarios sobre el caso peruano.

  5. Experimental and numerical analysis of a knee endoprosthesis numerical model

    Directory of Open Access Journals (Sweden)

    L. Zach

    2016-07-01

    Full Text Available The aim of this study is to create and verify a numerical model for a Medin Modular orthopedic knee-joint implant by investigating contact pressure, its distribution and contact surfaces. An experiment using Fuji Prescale pressure sensitive films and a finite element analysis (FEA using Abaqus software were carried out. The experimental data were evaluated using a special designed program and were compared with the results of the analysis. The designed evaluation program had been constructed on the basis of results obtained from a supplementary calibration experiment. The applicability of the numerical model for the real endoprosthesis behavior prediction was proven on the basis of their good correlation.

  6. Subject categories and scope descriptions

    International Nuclear Information System (INIS)

    2002-01-01

    This document is one in a series of publications known as the ETDE/INIS Joint Reference Series. It defines the subject categories and provides the scope descriptions to be used for categorization of the nuclear literature for the preparation of INIS and ETDE input by national and regional centres. Together with the other volumes of the INIS Reference Series it defines the rules, standards and practices and provides the authorities to be used in the International Nuclear Information System and ETDE. A complete list of the volumes published in the INIS Reference Series may be found on the inside front cover of this publication. This INIS/ETDE Reference Series document is intended to serve two purposes: to define the subject scope of the International Nuclear Information System (INIS) and the Energy Technology Data Exchange (ETDE) and to define the subject classification scheme of INIS and ETDE. It is thus the guide to the inputting centres in determining which items of literature should be reported, and in determining where the full bibliographic entry and abstract of each item should be included in INIS or ETDE database. Each category is identified by a category code consisting of three alphanumeric characters. A scope description is given for each subject category. The scope of INIS is the sum of the scopes of all the categories. With most categories cross references are provided to other categories where appropriate. Cross references should be of assistance in finding the appropriate category; in fact, by indicating topics that are excluded from the category in question, the cross references help to clarify and define the scope of the category to which they are appended. A Subject Index is included as an aid to subject classifiers, but it is only an aid and not a means for subject classification. It facilitates the use of this document, but is no substitute for the description of the scope of the subject categories

  7. ELECTRICAL POWER SYSTEM DESCRIPTION DOCUMENT

    Energy Technology Data Exchange (ETDEWEB)

    M. Maniyar

    2004-06-22

    The purpose of this revision of the System Description Document (SDD) is to establish requirements that drive the design of the electrical power system and their bases to allow the design effort to proceed to License Application. This SDD is a living document that will be revised at strategic points as the design matures over time. This SDD identifies the requirements and describes the system design as they exist at this time, with emphasis on those attributes of the design provided to meet the requirements. This SDD has been developed to be an engineering tool for design control. Accordingly, the primary audience are design engineers. This type of SDD leads and follows the design process. It leads the design process with regard to the flow down of upper tier requirements onto the system. Knowledge of these requirements is essential to performing the design process. This SDD follows the design with regard to the description of the system. The description provided in the SDD is a reflection of the results of the design process to date. Functional and operational requirements applicable to this system are obtained from ''Project Functional and Operational Requirements'' (F&OR) (Siddoway, 2003). Other requirements to support the design process have been taken from higher level requirements documents such as ''Project Design Criteria Document'' (PDC) (Doraswamy 2004), the fire hazards analyses, and the preclosure safety analysis. The above mentioned low-level documents address ''Project Requirements Document'' (PRD) (Canori and Leitner 2003) requirements. This SDD includes several appendices with supporting information. Appendix B lists key system charts, diagrams, drawings, and lists; and Appendix C is a list of system procedures.

  8. ELECTRICAL SUPPORT SYSTEM DESCRIPTION DOCUMENT

    Energy Technology Data Exchange (ETDEWEB)

    S. Roy

    2004-06-24

    The purpose of this revision of the System Design Description (SDD) is to establish requirements that drive the design of the electrical support system and their bases to allow the design effort to proceed to License Application. This SDD is a living document that will be revised at strategic points as the design matures over time. This SDD identifies the requirements and describes the system design as they exist at this time, with emphasis on those attributes of the design provided to meet the requirements. This SDD has been developed to be an engineering tool for design control. Accordingly, the primary audience/users are design engineers. This type of SDD both ''leads'' and ''trails'' the design process. It leads the design process with regard to the flow down of upper tier requirements onto the system. Knowledge of these requirements is essential in performing the design process. The SDD trails the design with regard to the description of the system. The description provided in the SDD is a reflection of the results of the design process to date. Functional and operational requirements applicable to electrical support systems are obtained from the ''Project Functional and Operational Requirements'' (F&OR) (Siddoway 2003). Other requirements to support the design process have been taken from higher-level requirements documents such as the ''Project Design Criteria Document'' (PDC) (Doraswamy 2004), and fire hazards analyses. The above-mentioned low-level documents address ''Project Requirements Document'' (PRD) (Canon and Leitner 2003) requirements. This SDD contains several appendices that include supporting information. Appendix B lists key system charts, diagrams, drawings, and lists, and Appendix C includes a list of system procedures.

  9. SNF AGING SYSTEM DESCRIPTION DOCUMENT

    International Nuclear Information System (INIS)

    L.L. Swanson

    2005-01-01

    The purpose of this system description document (SDD) is to establish requirements that drive the design of the spent nuclear fuel (SNF) aging system and associated bases, which will allow the design effort to proceed. This SDD will be revised at strategic points as the design matures. This SDD identifies the requirements and describes the system design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This SDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This SDD is part of an iterative design process. It leads the design process with regard to the flow down of upper tier requirements onto the system. Knowledge of these requirements is essential in performing the design process. The SDD follows the design with regard to the description of the system. The description provided in the SDD reflects the current results of the design process. Throughout this SDD, the term aging cask applies to vertical site-specific casks and to horizontal aging modules. The term overpack is a vertical site-specific cask that contains a dual-purpose canister (DPC) or a disposable canister. Functional and operational requirements applicable to this system were obtained from ''Project Functional and Operational Requirements'' (F andOR) (Curry 2004 [DIRS 170557]). Other requirements that support the design process were taken from documents such as ''Project Design Criteria Document'' (PDC) (BSC 2004 [DES 171599]), ''Site Fire Hazards Analyses'' (BSC 2005 [DIRS 172174]), and ''Nuclear Safety Design Bases for License Application'' (BSC 2005 [DIRS 171512]). The documents address requirements in the ''Project Requirements Document'' (PRD) (Canori and Leitner 2003 [DIRS 166275]). This SDD includes several appendices. Appendix A is a Glossary; Appendix B is a list of key system charts, diagrams, drawings, lists and additional supporting information; and Appendix C is a list of

  10. Qualitative Description of Spatial Quality in Inclusive Architecture.

    Science.gov (United States)

    Ryhl, Camilla; Kajita, Masashi; Sørensen, René

    2016-01-01

    Universal design (UD) has gained global significance and is in the process of institutionalisation in the Nordic Region. This is despite an urgent necessity for developing the theoretical basis and practical applicability of UD. Reflecting this need for furthering the comprehensive understanding of spatial implication of UD, this paper aims to contribute for articulating a means to assess the quality of UD in architecture. Drawing upon numerous cases from research conducted at the Danish Building Research Institute, the paper focuses on sensory aspects of spatial quality, and discusses as well as reflects an applied method for producing the qualitative description of selected buildings that embody UD through creative solutions. The qualitative description of collected examples appears to be effective in delineating sensory aspects of spatial experience; however the systematic development of assessment criteria is essential in order to support students and designers to make responsible decisions in shaping built environments that are accessible and inclusive but also enjoyable.

  11. numerical and numerical and experimental modeling of the static

    African Journals Online (AJOL)

    eobe

    Keywords: model experiment; numerical analysis; flat shell strips; and reinforced concrete thin-walled sections. 1. INTRODUCTION ..... Note that um, un are obtained from the solution of the beam vibration differential equation and. Ym, Yn are functions of µm, .... the Data Acquisition System. 3.3 The Finite Strip Models of the ...

  12. Numerical methods in multibody dynamics

    CERN Document Server

    Eich-Soellner, Edda

    1998-01-01

    Today computers play an important role in the development of complex mechanical systems, such as cars, railway vehicles or machines. Efficient simulation of these systems is only possible when based on methods that explore the strong link between numerics and computational mechanics. This book gives insight into modern techniques of numerical mathematics in the light of an interesting field of applications: multibody dynamics. The important interaction between modeling and solution techniques is demonstrated by using a simplified multibody model of a truck. Different versions of this mechanical model illustrate all key concepts in static and dynamic analysis as well as in parameter identification. The book focuses in particular on constrained mechanical systems. Their formulation in terms of differential-algebraic equations is the backbone of nearly all chapters. The book is written for students and teachers in numerical analysis and mechanical engineering as well as for engineers in industrial research labor...

  13. Numerical models for differential problems

    CERN Document Server

    Quarteroni, Alfio

    2017-01-01

    In this text, we introduce the basic concepts for the numerical modelling of partial differential equations. We consider the classical elliptic, parabolic and hyperbolic linear equations, but also the diffusion, transport, and Navier-Stokes equations, as well as equations representing conservation laws, saddle-point problems and optimal control problems. Furthermore, we provide numerous physical examples which underline such equations. We then analyze numerical solution methods based on finite elements, finite differences, finite volumes, spectral methods and domain decomposition methods, and reduced basis methods. In particular, we discuss the algorithmic and computer implementation aspects and provide a number of easy-to-use programs. The text does not require any previous advanced mathematical knowledge of partial differential equations: the absolutely essential concepts are reported in a preliminary chapter. It is therefore suitable for students of bachelor and master courses in scientific disciplines, an...

  14. Combining Narrative and Numerical Simulation

    DEFF Research Database (Denmark)

    Hansen, Mette Sanne; Ladeby, Klaes Rohde; Rasmussen, Lauge Baungaard

    2011-01-01

    Strategic simulation is the combination of narrative and numerical simulation and can be used as a tool to support strategic decision making by providing different scenarios in combination with computer modelling. The core of the combined simulation approach (CSA) is to make it possible for decis......Strategic simulation is the combination of narrative and numerical simulation and can be used as a tool to support strategic decision making by providing different scenarios in combination with computer modelling. The core of the combined simulation approach (CSA) is to make it possible...... to the decision making in operations and production management by providing new insights into modelling and simulation based on the combined narrative and numerical simulation approach as a tool for strategy making. The research question asks, “How can the CSA be applied in a practical context to support strategy...

  15. Numerical analysis of electromagnetic fields

    CERN Document Server

    Zhou Pei Bai

    1993-01-01

    Numerical methods for solving boundary value problems have developed rapidly. Knowledge of these methods is important both for engineers and scientists. There are many books published that deal with various approximate methods such as the finite element method, the boundary element method and so on. However, there is no textbook that includes all of these methods. This book is intended to fill this gap. The book is designed to be suitable for graduate students in engineering science, for senior undergraduate students as well as for scientists and engineers who are interested in electromagnetic fields. Objective Numerical calculation is the combination of mathematical methods and field theory. A great number of mathematical concepts, principles and techniques are discussed and many computational techniques are considered in dealing with practical problems. The purpose of this book is to provide students with a solid background in numerical analysis of the field problems. The book emphasizes the basic theories ...

  16. Addressing the Language Description Deficit

    Directory of Open Access Journals (Sweden)

    M. Ali Bolgiin

    2010-01-01

    Full Text Available Well-described language features are key to successful teaching and learning, especially for achieving advanced levels of proficiency. Other measures, such as simply increasing the number of reading and listening passages in a language program alone are not enough to bring the student to a higher level in a given skill. In fact, even being present in the target culture does not suffice. Angelelli and Degueldre (2002 argue that at advanced levels, even spending time in a country where the language is spoken is not necessarily sufficient for learners: "They do not need just exposure; they need answers to questions and explanations that they can rarely get by simply being immersed in a language/ culture." Less commonly taught languages (LCTLs lack descriptions that have such answers and explanations (cf. Fotos, 2002. It is argued in this paper that corpuslinguistic analyses help to provide actual usage-based, rather than intuition-based, descriptions and explanations of language features. Such approach is illustrated through English and Turkish examples.

  17. Integrated Project Management System description

    International Nuclear Information System (INIS)

    1994-09-01

    The Integrated Program Management System (IPMS) Description is a ''working'' document that describes the work processes of the Uranium Mill Tailings Remedial Action Project Office (UMTRA) and IPMS Group. This document has undergone many revisions since the UMTRA Project began; this revision not only updates the work processes but more clearly explains the relationships between the Project Office, contractors, and other participants. The work process flow style has been revised to better describe Project work and the relationships of participants. For each work process, more background and guidance on ''why'' and ''what is expected'' is given. For example, a description of activity data sheets has been added in the work organization and the Project performance and reporting processes, as well as additional detail about the federal budget process and funding management and improved flow charts and explanations of cost and schedule management. A chapter has been added describing the Cost Reduction/Productivity Improvement Program. The Change Control Board (CCB) procedures (Appendix A) have been updated. Project critical issues meeting (PCIM) procedures have been added as Appendix B. Budget risk assessment meeting procedures have been added as Appendix C. These appendices are written to act as stand-alone documentation for each process. As the procedures are improved and updated, the documentation can be updated separately

  18. Thermodynamical description of excited nuclei

    International Nuclear Information System (INIS)

    Bonche, P.

    1989-01-01

    In heavy ion collisions it has been possible to obtain composite systems at rather high excitation energies corresponding to temperatures of several MeV. The theoretical studies of these systems are based on concepts borrowed from thermodynamics or statistical physics, such as the temperature. In these lectures, we present the concepts of statistical physics which are involved in the physics of heavy ion as they are produced nowadays in the laboratory and also during the final stage of a supernova collapse. We do not attempt to describe the reaction mechanisms which yield such nuclear systems nor their decay by evaporation or fragmentation. We shall only study their static properties. The content of these lectures is organized in four main sections. The first one gives the basic features of statistical physics and thermodynamics necessary to understand quantum mechanics at finite temperature. In the second one, we present a study of the liquid-gas phase transition in nuclear physics. A phenomenological approach of the stability of hot nuclei follows. The microscopic point of view is proposed in the third part. Starting from the basic concepts derived in the first part, it provides a description of excited or hot nuclei which confirms the qualitative results of the second part. Furthermore it gives a full description of most properties of these nuclei as a function of temperature. Finally in the last part, a microscopic derivation of the equation of state of nuclear matter is proposed to study the collapse of a supernova core

  19. Archival Descriptions from the National Archives Catalog

    Data.gov (United States)

    National Archives and Records Administration — Archival Descriptions from the National Archives Catalog data set provides archival descriptions of the permanent holdings of the federal government in the custody...

  20. Numeral Incorporation in Japanese Sign Language

    Science.gov (United States)

    Ktejik, Mish

    2013-01-01

    This article explores the morphological process of numeral incorporation in Japanese Sign Language. Numeral incorporation is defined and the available research on numeral incorporation in signed language is discussed. The numeral signs in Japanese Sign Language are then introduced and followed by an explanation of the numeral morphemes which are…

  1. Numeric invariants from multidimensional persistence

    Energy Technology Data Exchange (ETDEWEB)

    Skryzalin, Jacek [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Carlsson, Gunnar [Stanford Univ., Stanford, CA (United States)

    2017-05-19

    In this paper, we analyze the space of multidimensional persistence modules from the perspectives of algebraic geometry. We first build a moduli space of a certain subclass of easily analyzed multidimensional persistence modules, which we construct specifically to capture much of the information which can be gained by using multidimensional persistence over one-dimensional persistence. We argue that the global sections of this space provide interesting numeric invariants when evaluated against our subclass of multidimensional persistence modules. Lastly, we extend these global sections to the space of all multidimensional persistence modules and discuss how the resulting numeric invariants might be used to study data.

  2. Numerical methods problems and solutions

    CERN Document Server

    Jain, MK

    2004-01-01

    About the Book: Is an outline series containing brief text of numerical solution of transcendental and polynomial equations, system of linear algebraic equations and eigenvalue problems, interpolation and approximation, differentiation and integration, ordinary differential equations and complete solutions to about 300 problems. Most of these problems are given as unsolved problems in the authors earlier book. User friendly Turbo Pascal programs for commonly used numerical methods are given in the Appendix. This book can be used as a text/help book both by teachers and students. Contents:

  3. Matlab programming for numerical analysis

    CERN Document Server

    Lopez, Cesar

    2014-01-01

    MATLAB is a high-level language and environment for numerical computation, visualization, and programming. Using MATLAB, you can analyze data, develop algorithms, and create models and applications. The language, tools, and built-in math functions enable you to explore multiple approaches and reach a solution faster than with spreadsheets or traditional programming languages, such as C/C++ or Java. Programming MATLAB for Numerical Analysis introduces you to the MATLAB language with practical hands-on instructions and results, allowing you to quickly achieve your goals. You will first become

  4. Numerical evolutions beyond our belief

    Directory of Open Access Journals (Sweden)

    Guilherme de Almeida

    2014-03-01

    Full Text Available The everyday life situations gave us a good enough training to deal with numerical evolutions operated by arithmetic progressions, so in this specific case we can make good numerical predictions. But our common sense is not usually prepared to deal with numbers that grow, or shrink, according to geometrical progressions. In the last cases, our intuition strongly fails, showing that our intuition is not always right. We also fail in comparing some other situations which we are not trained. This article shows some of that limiting cases.

  5. Numerical experiments for turbulent flows

    Science.gov (United States)

    Trefilík, Jiří; Kozel, Karel; Příhoda, Jaromír

    2013-04-01

    The aim of the work is to explore the possibilities of modelling transonic flows in the internal and external aerodynamics. Several configurations were analyzed and calculations were performed using both inviscid and viscous models of flow. Viscous turbulent flows have been simulated using either zero equation algebraic Baldwin-Lomax model and two equation k—ω model in its basic version and improved TNT variant. The numerical solution was obtained using Lax-Wendroff scheme in the MacCormack form on structured non-ortogonal grids. Artificial dissipation was added to improve the numerical stability. Achieved results are compared with experimental data.

  6. Numerical experiments for turbulent flows

    Directory of Open Access Journals (Sweden)

    Příhoda Jaromír

    2013-04-01

    Full Text Available The aim of the work is to explore the possibilities of modelling transonic flows in the internal and external aerodynamics. Several configurations were analyzed and calculations were performed using both inviscid and viscous models of flow. Viscous turbulent flows have been simulated using either zero equation algebraic Baldwin-Lomax model and two equation k—ω model in its basic version and improved TNT variant. The numerical solution was obtained using Lax-Wendroff scheme in the MacCormack form on structured non-ortogonal grids. Artificial dissipation was added to improve the numerical stability. Achieved results are compared with experimental data.

  7. About the statistical description of gas-liquid flows

    Energy Technology Data Exchange (ETDEWEB)

    Sanz, D.; Guido-Lavalle, G.; Carrica, P. [Centro Atomico Bariloche and Instituto Balseiro (Argentina)] [and others

    1995-09-01

    Elements of the probabilistic geometry are used to derive the bubble coalescence term of the statistical description of gas liquid flows. It is shown that the Boltzmann`s hypothesis, that leads to the kinetic theory of dilute gases, is not appropriate for this kind of flows. The resulting integro-differential transport equation is numerically integrated to study the flow development in slender bubble columns. The solution remarkably predicts the transition from bubbly to slug flow pattern. Moreover, a bubbly bimodal size distribution is predicted, which has already been observed experimentally.

  8. Promoción de la salud y prevención en tiempos de crisis: el rol del sector sanitario. Informe SESPAS 2014

    Directory of Open Access Journals (Sweden)

    Soledad Márquez-Calderón

    2014-06-01

    Full Text Available Este artículo revisa la evolución de los estilos de vida e identifica algunas prioridades y líneas de mejora en prevención y promoción de la salud en el momento actual de crisis económica. Se utilizan diversas fuentes, incluida una encuesta a 30 expertos/as en salud pública y atención primaria. Entre 2006 y 2012 no se detectan grandes cambios en estilos de vida, salvo un descenso en el consumo habitual de alcohol. Desciende ligeramente el consumo de drogas ilegales, pero aumenta el de psicofármacos. La mayoría de los/las expertos/as considera que debe mejorarse la toma de decisiones sobre cribados poblacionales y vacunas, incluyendo el análisis del coste de oportunidad, y mayor transparencia e independencia de los/las profesionales implicados/as. La prevención está contribuyendo a la medicalización de la vida, pero hay opiniones divididas sobre la necesidad de algunas actividades preventivas. Las prioridades en prevención están en el ámbito de la salud mental y de la infección por el virus de la inmunodeficiencia humana en grupos vulnerables. La mayoría de los/las expertos/as considera que las intervenciones de promoción de la salud tienen potencial para mitigar los efectos de la crisis, y que son grupos prioritarios la infancia, las personas desempleadas y otros grupos vulnerables. Son intervenciones prioritarias las actividades comunitarias en colaboración con ayuntamientos y otros sectores, la abogacía y la promoción de la salud mental. Se considera deseable un mayor uso de la legislación y de los medios de comunicación como herramientas de promoción. Es importante clarificar el rol del sector sanitario en las actividades intersectoriales, y reconocer las limitaciones, puesto que los determinantes sociales de salud dependen de otros sectores. Se advierte asimismo del riesgo derivado de los recortes y de las políticas que inciden negativamente en las condiciones de vida.

  9. Rol del sistema kallicreína kinina y su interrelación con sistemas vasoactivos durante la preñez

    Directory of Open Access Journals (Sweden)

    Elisabet Oddo

    2011-10-01

    Full Text Available La hiperfiltración glomerular y el aumento de la reabsorción de sodio son factores fundamentales para el desarrollo de la unidad feto placentaria. Dichos factores resultan de adaptaciones hemodinámicas y renales en las que participan sistemas vasoactivos. Se pudo demostrar en ratas que la activación del sistema kallicreína kinina (SKK precede a la instalación de la hiperfiltración glomerular, dado que su inhibición por aprotinina previene el aumento del filtrado glomerular. Además, la inhibición individual o asociada de los efectores específicos del SKK, las prostaglandinas (PGs y el óxido nítrico (ON, confirman la dependencia del filtrado glomerular del SKK durante la preñez. Encontramos también que el sistema renina angiotensina (SRA participa en la generación de la hiperfiltración glomerular dado que ésta es afectada por la administración de bloqueantes del SRA. La inhibición máxima sobre el pico de hiperfiltración se obtuvo con el bloqueo de ambos sistemas (SKK y SRA. Además, estrategias para alterar la hiperfiltración glomerular y la reabsorción de sodio de la preñez evidenciaron alteraciones en el desarrollo de la unidad feto placentaria, menor número de crías, mayor cantidad de reabsorciones intrauterinas y retardo en el crecimiento. El tratamiento combinado de inhibidores del SKK asociados a bloqueantes del SRA o de óxido nítrico mostraron los mayores efectos. En consecuencia, demostramos que el SKK juega un rol central en los fenómenos de adaptación que acompañan la preñez normal. La interrelación del SKK con varios sistemas vasoactivos parecería formar una red que participa en las adaptaciones hemodinámicas para un adecuado desarrollo de la gestación y de la unidad feto-placentaria.

  10. PERCEPŢII PRIVIND ANGAJAMENTUL DE ROL ŞI CONFLICTUL MUNCĂ-FAMILIE LA ANGAJAŢII DIN REPUBLICA MOLDOVA: STUDIU EXPLORATIV

    Directory of Open Access Journals (Sweden)

    Carolina PLATON

    2017-03-01

    Full Text Available Unul dintre conflictele motivaţionale întâlnite frecvent în mediul organizaţional este „conflictul familie-muncă”. Conflictul, în acest caz, derivă din nevoia de a integra în mod optim solicitările legate de rolul familial cu cele ale rolului profesional. Studiile relevă că acest tip de conflict este o sursă considerabilă de distres atât pentru angajaţi, cât şi pentru organizaţie, afectează starea subiectivă de bine a angajaţilor şi se soldează cu stări emoţionale preponderent negative. Astfel, organizaţiile vor fi cu atât mai atractive pentru angajaţi, cu cât le oferă posibilităţi să integreze solicitările legate de locul de muncă şi cele din familie. Cum este perceput angajamentul de rol şi „conflictul familie-muncă” la angajaţii din Republica Moldova, precum şi felul în care interferează solicitările de roluri sunt aspecte pe care le vom discuta în acest context.PERCEPTIONS REGARDING ROLE COMMITMENT AND WORK-FAMILY CONFLICT OF THE EMPLOYEES FROM THE REPUBLIC OF MOLDOVA: EXPLORATIVE STUDYOne of the motivational conflicts often encountered in the organizational environment is "family-work conflict." The conflict, in this case, derives from the need to integrate optimally family and work-related responsibilities. Studies show that this type of conflict is a source of considerable distress for both employees and the organization; it affects the subjective well-being of employees and results in predominantly negative emotions. Thus, organizations will be more attractive for workers if they can provide opportunities to integrate tasks related to work and family. We will discuss hereby how role commitments and "family-work conflicts" are perceived by employees in RM and the way these multiple roles interfere. 

  11. EL ROL DE LOS ACTORES PÚBLICOS EN LA CONSTRUCCIÓN DE UN ESPACIO TURÍSTICO: EL CASO DE VILLA EL CHOCÓN

    Directory of Open Access Journals (Sweden)

    Mariana Suárez

    2008-12-01

    Full Text Available En el actual contexto de redefinición del rol de los actores públicos, se puede identificar un cambio en la concepción del mismo respecto a la ordenación territorial, el aprovechamiento de recursos y la proyección del desarrollo. El presente trabajo tiene como objetivo analizar la influencia que los cambios acontecidos en la función de los actores públicos han tenido en cuestiones de promoción del turismo e impulso al desarrollo local en Villa El Chocón. Se establecieron dos períodos caracterizados por concepciones diferentes sobre el poder, lo público, el desarrollo y la planificación. Un primer período determinado por una concepción desarrollista de tipo fordista en la que predominaba la acción del Estado-Nación en cuestiones de planificación y desarrollo y de la empresa HIDRONOR S. A. en las funciones de regulación, mantenimiento y prestación de servicios básicos y organización socio- territorial, y que concluye a principios de los ‘90 en el contexto de un profundo cambio de modelo económico y reforma institucional. Y un segundo período caracterizado por la entrada en acción de un relegado actor de base local: el Municipio, que se afianzará como principal ejecutor de políticas de desarrollo y promoverá un modelo que tiende a re-valorizar el medio natural desde la nueva perspectiva del desarrollo local. Un modelo que requiere un actor público dinámico, activo y capaz de realizar cambios organizacionales que potencien la eficacia, eficiencia y efectividad de sus administraciones. Se determina que el Municipio de Villa El Chocón es un actor público en proceso de consolidación de sus relaciones institucionales y un órgano de gobierno con deficiencias organizacionales que dificultan la concreción del nuevo modelo de desarrollo, aunque se desataca que ha fortalecido su capacidad de cohesión social y ha logrado reconvertir el perfil productivo hacia el turismo.

  12. Tensão devido ao papel de cuidador entre cuidadores de crianças com câncer Tensión debido al rol de cuidador entre cuidadores de niños con cáncer Caregiver role strain in caregivers of children with cancer

    Directory of Open Access Journals (Sweden)

    Ana Raquel Medeiros Beck

    2007-10-01

    Full Text Available Pretendeu-se identificar a freqüência do diagnóstico de enfermagem `tensão devido ao papel do cuidador' e `risco para tensão devida ao papel do cuidador', entre 50 cuidadores de crianças portadoras de câncer, num hospital infantil especializado em doenças onco-hematológicas de Campinas, SP. O estudo foi transversal e descritivo, os dados foram coletados por meio do prontuário e de entrevista com o cuidador, utilizando-se formulário próprio. Apresentaram `tensão devido ao papel de cuidador 78% dos cuidadores e 100% tinham risco para tensão devida ao papel de cuidador, com a presença de, no mínimo, duas características definidoras e seis fatores de risco'. Conclui-se que os cuidadores de crianças com câncer têm alto risco para tensão devida ao papel de cuidador.Se pretendió identificar la frecuencia del diagnóstico de enfermería: `tensión debido al rol de cuidador' y `riesgo de tensión debida al papel de cuidador', entre 50 cuidadores de niños portadores de cáncer, en un hospital infantil especializado en enfermedades onco-hematológicas de Campinas, SP, Brasil. El estudio fué transversal y descriptivo, los datos fueron recogidos por medio de la ficha de la entrevista con el cuidador, utilizandose un formulario apropiado. Presentaron `tensión debida al papel del cuidador' 78% de los cuidadores, y 100% corrían riesgo de `tensión debido al rol de cuidador', con la presencia mínima de 2 características definidoras y 6 factores de riesgo. Se concluye que los cuidadores de niños con cáncer corren alto riesgo de tensión debida al papel de cuidadador'.The purpose of this study was to identify the frequency of nursing diagnoses "caregiver role strain" and "risk for caregiver role strain" in 50 caregivers of children with cancer in a specialized children's cancer hospital in Campinas, São Paulo. The data for this descriptive cross-sectional study was obtained from the patients' files and interviews held with the

  13. Numerical studies of fermionic field theories at large-N

    International Nuclear Information System (INIS)

    Dickens, T.A.

    1987-01-01

    A description of an algorithm, which may be used to study large-N theories with or without fermions, is presented. As an initial test of the method, the spectrum of continuum QCD in 1 + 1 dimensions is determined and compared to previously obtained results. Exact solutions of 1 + 1 dimensional lattice versions of the free fermion theory, the Gross-Neveu model, and QCD are obtained. Comparison of these exact results with results from the numerical algorithm is used to test the algorithms, and more importantly, to determine the errors incurred from the approximations used in the numerical technique. Numerical studies of the above three lattice theories in higher dimensions are also presented. The results are again compared to exact solutions for free fermions and the Gross-Neveu model; perturbation theory is used to derive expansions with which the numerical results for QCD may be compared. The numerical algorithm may also be used to study the euclidean formulation of lattice gauge theories. Results for 1 + 1 dimensional euclidean lattice QCD are compared to the exact solution of this model

  14. SNF AGING SYSTEM DESCRIPTION DOCUMENT

    Energy Technology Data Exchange (ETDEWEB)

    L.L. Swanson

    2005-04-06

    The purpose of this system description document (SDD) is to establish requirements that drive the design of the spent nuclear fuel (SNF) aging system and associated bases, which will allow the design effort to proceed. This SDD will be revised at strategic points as the design matures. This SDD identifies the requirements and describes the system design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This SDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This SDD is part of an iterative design process. It leads the design process with regard to the flow down of upper tier requirements onto the system. Knowledge of these requirements is essential in performing the design process. The SDD follows the design with regard to the description of the system. The description provided in the SDD reflects the current results of the design process. Throughout this SDD, the term aging cask applies to vertical site-specific casks and to horizontal aging modules. The term overpack is a vertical site-specific cask that contains a dual-purpose canister (DPC) or a disposable canister. Functional and operational requirements applicable to this system were obtained from ''Project Functional and Operational Requirements'' (F&OR) (Curry 2004 [DIRS 170557]). Other requirements that support the design process were taken from documents such as ''Project Design Criteria Document'' (PDC) (BSC 2004 [DES 171599]), ''Site Fire Hazards Analyses'' (BSC 2005 [DIRS 172174]), and ''Nuclear Safety Design Bases for License Application'' (BSC 2005 [DIRS 171512]). The documents address requirements in the ''Project Requirements Document'' (PRD) (Canori and Leitner 2003 [DIRS 166275]). This SDD includes several appendices. Appendix A is a Glossary; Appendix B is a list of key system charts

  15. Numerical experiments with neural networks

    International Nuclear Information System (INIS)

    Miranda, Enrique.

    1990-01-01

    Neural networks are highly idealized models which, in spite of their simplicity, reproduce some key features of the real brain. In this paper, they are introduced at a level adequate for an undergraduate computational physics course. Some relevant magnitudes are defined and evaluated numerically for the Hopfield model and a short term memory model. (Author)

  16. Numerical Solution of Parabolic Equations

    DEFF Research Database (Denmark)

    Østerby, Ole

    . Among the special features of this book can be mentioned the presentation of a practical approach to reliable estimates of the global error, including warning signals if the reliability is questionable. The technique is generally applicable for estimating the discretization error in numerical...

  17. Numerical computation of MHD equilibria

    International Nuclear Information System (INIS)

    Atanasiu, C.V.

    1982-10-01

    A numerical code for a two-dimensional MHD equilibrium computation has been carried out. The code solves the Grad-Shafranov equation in its integral form, for both formulations: the free-boundary problem and the fixed boundary one. Examples of the application of the code to tokamak design are given. (author)

  18. Numerical Evaluation of Harmonic Polylogarithms

    CERN Document Server

    Gehrmann, T

    2001-01-01

    Harmonic polylogarithms $\\H(\\vec{a};x)$, a generalization of Nielsen's polylogarithms ${S}_{n,p}(x)$, appear frequently in analytic calculations of radiative corrections in quantum field theory. We present an algorithm for the numerical evaluation of harmonic polylogarithms of arbitrary real argument. This algorithm is implemented into a FORTRAN subroutine hplog to compute harmonic polylogarithms up to weight 4.

  19. Numerical relativity and asymptotic flatness

    International Nuclear Information System (INIS)

    Deadman, E; Stewart, J M

    2009-01-01

    It is highly plausible that the region of spacetime far from an isolated gravitating body is, in some sense, asymptotically Minkowskian. However theoretical studies of the full nonlinear theory, initiated by Bondi et al (1962 Proc. R. Soc. A 269 21-51), Sachs (1962 Proc. R. Soc. A 270 103-26) and Newman and Unti (1962 J. Math. Phys. 3 891-901), rely on careful, clever, a priori choices of a chart (and tetrad) and so are not readily accessible to the numerical relativist, who chooses her/his chart on the basis of quite different grounds. This paper seeks to close this gap. Starting from data available in a typical numerical evolution, we construct a chart and tetrad which are, asymptotically, sufficiently close to the theoretical ones, so that the key concepts of the Bondi news function, Bondi mass and its rate of decrease can be estimated. In particular, these estimates can be expressed in the numerical relativist's chart as numerical relativity recipes.

  20. Theory buried under heavy description

    Directory of Open Access Journals (Sweden)

    Vivian B. Martin Ph.D.

    2010-12-01

    Full Text Available In journalism when a reporter puts the main news or point of the story deep down in the text, we say she’s buried the lead, the lead being the main point of the story and usually the first paragraph. In Children in Genocide: extreme traumatization and affect regulation, psychoanalyst Suzanne Kaplan buries her theory. Her study of the after effects of trauma among Holocaust survivors who were children during their persecution and survivors of atrocities during the Rwandan atrocities of the 1990s, is filled with highly descriptive material from the many interviews that serve as data. An interesting grounded theory is peeking out from under all the disciplinary discourse and historical background one must read through to get to what grounded theory readers will consider the juicy parts: concepts on affect regulation in trauma survivors.

  1. Integrated Project Management System description

    International Nuclear Information System (INIS)

    1987-03-01

    The Uranium Mill Tailings Remedial Action (UMTRA) Project is a Department of Energy (DOE) designated Major System Acquisition (MSA). To execute and manage the Project mission successfully and to comply with the MSA requirements, the UMTRA Project Office (''Project Office'') has implemented and operates an Integrated Project Management System (IPMS). The Project Office is assisted by the Technical Assistance Contractor's (TAC) Project Integration and Control (PIC) Group in system operation. Each participant, in turn, provides critical input to system operation and reporting requirements. The IPMS provides a uniform structured approach for integrating the work of Project participants. It serves as a tool for planning and control, workload management, performance measurement, and specialized reporting within a standardized format. This system description presents the guidance for its operation. Appendices 1 and 2 contain definitions of commonly used terms and abbreviations and acronyms, respectively. 17 figs., 5 tabs

  2. Reversible gates and circuits descriptions

    Science.gov (United States)

    Gracki, Krzystof

    2017-08-01

    This paper presents basic methods of reversible circuit description. To design reversible circuit a set of gates has to be chosen. Most popular libraries are composed of three types of gates so called CNT gates (Control, NOT and Toffoli). The gate indexing method presented in this paper is based on the CNT gates set. It introduces a uniform indexing of the gates used during synthesis process of reversible circuits. The paper is organized as follows. Section 1 recalls basic concepts of reversible logic. In Section 2 and 3 a graphical representation of the reversible gates and circuits is described. Section 4 describes proposed uniform NCT gates indexing. The presented gate indexing method provides gate numbering scheme independent of lines number of the designed circuit. The solution for a circuit consisting of smaller number of lines is a subset of solution for a larger circuit.

  3. Relativistic description of deformed nuclei

    International Nuclear Information System (INIS)

    Price, C.E.

    1988-01-01

    The author has shown that relativistic Hartree calculations using parameters that have been fit to the properties of nuclear matter can provide a good description of both spherical and axially deformed nuclei. The quantitative agreement with experiment is equivalent to that which was obtained in non-relativistic calculations using Skyrme interactions. The equilibrium deformation is strongly correlated with the size of the spin-orbit splitting, and that parameter sets which give roughly the correct value for this splitting provide the best agreement with the quadrupole moments in the s-d shell. Finally, for closed shell +/- 1 nuclei, it was shown that the self-consistent calculations are able to reproduce the experimental magnetic moments. This was not possible in relativistic calculations which include only the effects of the valence orbital

  4. Comparison of Numerical Modelling of Degradation Mechanisms in Single Mode Optical Fibre Using MATLAB and VPIphotonics

    Directory of Open Access Journals (Sweden)

    Jana Sajgalikova

    2015-01-01

    Full Text Available Mathematical models for description of physical phenomena often use the statistical description of the individual phenomena and solve those using suitable methods. If we want to develop numerical model of optical communication system based on transmission through single mode optical fibres, we need to consider whole series of phenomena that affect various parts of the system. In the single-mode optical fibre we often encounter influence of chromatic dispersion and nonlinear Kerr effects. By observing various different degradation mechanisms, every numerical model should have its own limits, which fulfil more detailed specification. It is inevitable to consider them in evaluation. In this paper, we focus on numerical modelling of degradation mechanisms in single-mode optical fibre. Numerical solution of non-linear Schroedinger equation is performed by finite difference method applied in MATLAB environment and split-step Fourier method, which is implemented by VPIphotonics software.

  5. ROLE AS A STRATEGY GAMES EDUCATIONAL PERCEPTIONS OF TEACHERS IN TRAINING AND HIGH SCHOOL STUDENTS JUEGOS DE ROL COMO ESTRATEGIA EDUCATIVA: PERCEPCIONES DE DOCENTES EN FORMACIÓN Y ESTUDIANTES DE SECUNDARIA

    Directory of Open Access Journals (Sweden)

    Víctor Abella García

    2010-11-01

    Full Text Available p { margin-bottom: 0.21cm; } Mass media have showed a negative image of role playing games in the United States and also in Spain. Murders, suicides and a certain grade of psychosis seems associated with the RPGs, at least on the newspapers. Curiously, these opinions, do not seem to correspond to the scientific investigations realized until now, neither with the legal choices dictated on related cases. This investigation analyzes quantitatively the opinions in a questionnaire of 133 young people.Los medios de comunicación han trasladado una imagen negativa sobre los juegos de rol, tanto en Estados Unidos como en España. Asesinatos, suicidios y un cierto grado de psicosis parecen asociados con los juegos de rol, al menos a tenor de las noticias que suelen aparecer en los medios. Curiosamente, estas opiniones, no parecen corresponderse con las investigaciones científicas realizadas hasta el momento, ni con las sentencias judiciales dictadas sobre casos relacionados. Esta investigación analiza cuantitativamente las opiniones vertidas mediante cuestionario de 133 jóvenes.

  6. İŞTEN AYRILMA NİYETİ VE AŞIRI ROL YÜKÜNÜN OTEL ÇALIŞANLARININ SOSYAL AYLAKLIK DAVRANIŞLARINA ETKİSİ

    Directory of Open Access Journals (Sweden)

    Yılmaz AKGÜNDÜZ

    2014-10-01

    Full Text Available ÖZ: Bu çalışmanın amacı otel işletmelerinde çalışan işgörenlerin sosyal aylaklık (kaytarma davranışlarına işten ayrılma niyetleri ve aşırı rol yükü algılarının etkisini belirlemektir. Ayrıca çalışma kapsamında aşırı rol yükünün işten ayrılma niyetine olan etkisinin belirlenmesi de amaçlanmaktadır. Bu kapsamda sosyal aylaklık, işten ayrılma niyeti ve aşırı rol yükü ölçeklerini içeren bir anket, İzmir’deki dört ve beş yıldızlı otellerde çalışan 354 işgörene seçkisiz örnekleme yöntemi ile 15 Eylül-15Kasım 2013 döneminde uygulanmıştır. Sosyal aylaklık ölçeği ve işten ayrılma niyeti ölçeği yapılan açıklayıcı faktör analizi sonucunda tek boyutta, aşırı rol yükü ölçeği ise zaman yetersizliği ve aşırı sorumluluk olmak üzere iki faktör altında toplanmıştır. Araştırmada hiyerarşik regresyon analizi yapılarak hipotezler test edilmiştir. Analiz sonucunda, aşırı rol yükü -zaman yetersizliği- algısının ve işten ayrılma niyetinin çalışanların sosyal aylaklık davranışını artırdığı ortaya koyulmuştur. Ayrıca çalışanların aşırı rol yükü -zaman yetersizliği- algısının işten ayrılma niyetlerini artırdığı; aşırı rol yükü -aşırı sorumluluk- algısının ise işten ayrılma niyetini azalttığı da belirlenmiştir. Anahtar Kelimeler: Sosyal Aylaklık, İşten Ayrılma Niyeti, Aşırı Rol Yükü, Oteller. ABSTRACT: The aim of this research is to investigate the effect of turnover intention and role overload on social loafing behavior of hotel employees. Besides, the effect of role overload on turnover intention has been investigated. In the scope of research, questionnaire of the scales of turnover intention, role overload and social loafing have been applied to 354 employees working in the hotels including four and five stars through random sampling between September 15 and December 15, 2013. As a result

  7. Rol of sacharides in nutrition

    OpenAIRE

    JURÁK, Ondřej

    2012-01-01

    In the theoretical part of the bachelor thesis basic characteristics of the sacharides were handled by form of literary searches. Further, the properties of basic cereals and cereal products were described, including the chapter about digestion and absorption of carbohydrates in the human organism. Last part describes cereal products, especialy breakfast cereals, their prevalence and importance in the diet of school pupils and students. The aim of the research part of the bachelor thesis was ...

  8. 4 UIE ROL V4

    African Journals Online (AJOL)

    oefening vir Operasie Bonus, nie onmoontlik kort nie.lO. Die ver~terkings wat vir Indie bestem was en vanaf Brittanje om die Kaap na Indie op pad was, sou tydelik vir die besetting van Diego. Suarez ingespan word, maar moes so gou moontlik na die besetting deur garnisoen- troepe wat deels uit Suid-Afrika moes kom,.

  9. Numerical simulation of electromagnetic surface treatment

    Science.gov (United States)

    Sonde, Emmanuel; Chaise, Thibaut; Nelias, Daniel; Robin, Vincent

    2018-01-01

    Surface treatment methods, such as shot peening or laser shock peening, are generally used to introduce superficial compressive residual stresses in mechanical parts. These processes are carried out during the manufacturing steps or for the purpose of repairing. The compressive residual stresses prevent the initiation and growth of cracks and thus improve the fatigue life of mechanical components. Electromagnetic pulse peening (EMP) is an innovative process that could be used to introduce compressive residual stresses in conductive materials. It acts by generating a high transient electromagnetic field near the working surface. In this paper, the EMP process is presented and a sequentially coupled electromagnetic and mechanical model is developed for its simulation. This 2D axisymmetric model is set up with the commercial finite element software SYSWELD. After description and validation, the numerical model is used to simulate a case of introducing residual stresses of compression in a nickel-based alloy 690 thick sample, by the means of electromagnetic pulses. The results are presented in terms of effective plastic strain and residual mean stress. The influence of the process parameters, such as current intensity and frequency, on the results is analyzed. Finally, the predictability of the process is shown by several correlation studies.

  10. Validation of numerical model of a liquid flow in a tundish by laboratory measurements

    Directory of Open Access Journals (Sweden)

    T. Merder

    2014-07-01

    Full Text Available The article presents results of physical and numerical modelling of steel flow through a tundish of continuous casting machine. In numerical calculations the influence of mesh density was tested and the correctness of the flow description in the near-wall region was checked using Standard Wall Function model. Obtained results were verified using experimental results of velocity field (PIV method coming from a water tundish model.

  11. Numerical regulation of a test facility of materials for PWR

    International Nuclear Information System (INIS)

    Zauq, M.H.

    1982-02-01

    The installation aims at testing materials used in nuclear power plants; tests consists in simulations of a design basis accident (failure of a primary circuit of a PWR type reactor) for a qualification of these materials. A description of the test installation, of the thermodynamic control, and of the control system is presented. The organisation of the software is then given: description of the sequence chaining monitor, operation, list and function of the programs. The analog information processing is also presented (data transmission). A real-time microcomputer and clock are used for this work. The microprocessor is the 6800 of MOTOROLA. The microcomputer used has been built around the MC 6800; its structure is described. The data acquisition include an analog data acquisition system and a numerical data acquisition system. Laboratory and on-site tests are finally presented [fr

  12. Advanced experimental and numerical techniques for cavitation erosion prediction

    CERN Document Server

    Chahine, Georges; Franc, Jean-Pierre; Karimi, Ayat

    2014-01-01

    This book provides a comprehensive treatment of the cavitation erosion phenomenon and state-of-the-art research in the field. It is divided into two parts. Part 1 consists of seven chapters, offering a wide range of computational and experimental approaches to cavitation erosion. It includes a general introduction to cavitation and cavitation erosion, a detailed description of facilities and measurement techniques commonly used in cavitation erosion studies, an extensive presentation of various stages of cavitation damage (including incubation and mass loss), and insights into the contribution of computational methods to the analysis of both fluid and material behavior. The proposed approach is based on a detailed description of impact loads generated by collapsing cavitation bubbles and a physical analysis of the material response to these loads. Part 2 is devoted to a selection of nine papers presented at the International Workshop on Advanced Experimental and Numerical Techniques for Cavitation Erosion (Gr...

  13. Numerical simulation of tsunami-scale wave boundary layers

    DEFF Research Database (Denmark)

    Williams, Isaac A.; Fuhrman, David R.

    2016-01-01

    This paper presents a numerical study of the boundary layer flow and properties induced by tsunami-scalewaves. For this purpose, an existing one-dimensional vertical (1DV) boundary layer model, based on the horizontal component of the incompressible Reynolds-averaged Navier–Stokes (RANS) equations...... demonstrating the ability to reproduce accurate velocity profiles, turbulence, and bed shear stresses on both smooth and rough beds.The validated model is then employed for the study of transient wave boundary layers at full tsunami scales,covering a wide and realistic geophysical range in terms of the flow...... duration, bottom roughness, and associated Reynolds numbers. For this purpose, three different “synthetic” (idealised) tsunami wave descriptions are considered i.e., invoking: (1) single wave (solitary-like, but with independent period and wave height),(2) sinusoidal, and (3) N-wave descriptions. The flow...

  14. Numerical and Evolutionary Optimization Workshop

    CERN Document Server

    Trujillo, Leonardo; Legrand, Pierrick; Maldonado, Yazmin

    2017-01-01

    This volume comprises a selection of works presented at the Numerical and Evolutionary Optimization (NEO) workshop held in September 2015 in Tijuana, Mexico. The development of powerful search and optimization techniques is of great importance in today’s world that requires researchers and practitioners to tackle a growing number of challenging real-world problems. In particular, there are two well-established and widely known fields that are commonly applied in this area: (i) traditional numerical optimization techniques and (ii) comparatively recent bio-inspired heuristics. Both paradigms have their unique strengths and weaknesses, allowing them to solve some challenging problems while still failing in others. The goal of the NEO workshop series is to bring together people from these and related fields to discuss, compare and merge their complimentary perspectives in order to develop fast and reliable hybrid methods that maximize the strengths and minimize the weaknesses of the underlying paradigms. Throu...

  15. Numerical simulation of electrochemical desalination

    Science.gov (United States)

    Hlushkou, D.; Knust, K. N.; Crooks, R. M.; Tallarek, U.

    2016-05-01

    We present an effective numerical approach to simulate electrochemically mediated desalination of seawater. This new membraneless, energy efficient desalination method relies on the oxidation of chloride ions, which generates an ion depletion zone and local electric field gradient near the junction of a microchannel branch to redirect sea salt into the brine stream, consequently producing desalted water. The proposed numerical model is based on resolution of the 3D coupled Navier-Stokes, Nernst-Planck, and Poisson equations at non-uniform spatial grids. The model is implemented as a parallel code and can be employed to simulate mass-charge transport coupled with surface or volume reactions in 3D systems showing an arbitrarily complex geometrical configuration.

  16. Numerical methods for metamaterial design

    CERN Document Server

    2013-01-01

    This book describes a relatively new approach for the design of electromagnetic metamaterials.  Numerical optimization routines are combined with electromagnetic simulations to tailor the broadband optical properties of a metamaterial to have predetermined responses at predetermined wavelengths. After a review of both the major efforts within the field of metamaterials and the field of mathematical optimization, chapters covering both gradient-based and derivative-free design methods are considered.  Selected topics including surrogate-base optimization, adaptive mesh search, and genetic algorithms are shown to be effective, gradient-free optimization strategies.  Additionally, new techniques for representing dielectric distributions in two dimensions, including level sets, are demonstrated as effective methods for gradient-based optimization.  Each chapter begins with a rigorous review of the optimization strategy used, and is followed by numerous examples that combine the strategy with either electromag...

  17. Numerical Hydrodynamics in Special Relativity

    Directory of Open Access Journals (Sweden)

    Martí José Maria

    2003-01-01

    Full Text Available This review is concerned with a discussion of numerical methods for the solution of the equations of special relativistic hydrodynamics (SRHD. Particular emphasis is put on a comprehensive review of the application of high-resolution shock-capturing methods in SRHD. Results of a set of demanding test bench simulations obtained with different numerical SRHD methods are compared. Three applications (astrophysical jets, gamma-ray bursts and heavy ion collisions of relativistic flows are discussed. An evaluation of various SRHD methods is presented, and future developments in SRHD are analyzed involving extension to general relativistic hydrodynamics and relativistic magneto-hydrodynamics. The review further provides FORTRAN programs to compute the exact solution of a 1D relativistic Riemann problem with zero and nonzero tangential velocities, and to simulate 1D relativistic flows in Cartesian Eulerian coordinates using the exact SRHD Riemann solver and PPM reconstruction.

  18. Numerical modelling of mine workings.

    CSIR Research Space (South Africa)

    Lightfoot, N

    1999-03-01

    Full Text Available List of Tables Table 6-1: The benefits of artificial expertise (expert systems) in comparison to human expertise (after Waterman, 1986)………………………………………………………….22 Table 6-2: Available expert system development tools………………………………….27 9 Glossary... with ‘intelligence’ to help engineers use numerical modelling programs for mine design. This area of the project represented 55 man-days of work. The work concentrated on four potential aspects of user interface development for numerical modelling. The first...

  19. Chaotic inflation: A numerical approach

    International Nuclear Information System (INIS)

    Biller, P.; Pertuccione, F.

    1991-01-01

    A numerical study of chaotic inflation is presented. Following a semiclassical treatment of quantum effects, the dynamics is described as a random process. The relevant Langevin equation is then integrated numerically for a large number of realizations and results are evaluated as ensemble averages. For the understanding of the global structure of the universe the fact that different domains of the universe have different growth rates is important. This is handled by a new modified algorithm. The simulation results for the probability distribution functions at constant and proper volume are given for two typical initial conditions. We compare them to the approximate results of an already existing analytical approach. The picture of an eternally existing self-reproducing universe is confirmed. (orig.)

  20. Numerical integration of variational equations.

    Science.gov (United States)

    Skokos, Ch; Gerlach, E

    2010-09-01

    We present and compare different numerical schemes for the integration of the variational equations of autonomous Hamiltonian systems whose kinetic energy is quadratic in the generalized momenta and whose potential is a function of the generalized positions. We apply these techniques to Hamiltonian systems of various degrees of freedom and investigate their efficiency in accurately reproducing well-known properties of chaos indicators such as the Lyapunov characteristic exponents and the generalized alignment indices. We find that the best numerical performance is exhibited by the "tangent map method," a scheme based on symplectic integration techniques which proves to be optimal in speed and accuracy. According to this method, a symplectic integrator is used to approximate the solution of the Hamilton equations of motion by the repeated action of a symplectic map S , while the corresponding tangent map TS is used for the integration of the variational equations. A simple and systematic technique to construct TS is also presented.

  1. Cuba: Multidimensional numerical integration library

    Science.gov (United States)

    Hahn, Thomas

    2016-08-01

    The Cuba library offers four independent routines for multidimensional numerical integration: Vegas, Suave, Divonne, and Cuhre. The four algorithms work by very different methods, and can integrate vector integrands and have very similar Fortran, C/C++, and Mathematica interfaces. Their invocation is very similar, making it easy to cross-check by substituting one method by another. For further safeguarding, the output is supplemented by a chi-square probability which quantifies the reliability of the error estimate.

  2. Physics-compatible numerical methods

    OpenAIRE

    Barry, Koren; Abgrall, Remi; Pavel, Bochev; Jason, Frank; Blair, Perrot

    2014-01-01

    International audience; Physics-compatible numerical methods are methods that aim to preserve key mathematical and physical properties of continuum physics models in their finite-dimensional algebraic representations. They include methods which preserve properties such as energy, monotonicity, maximum principles, symmetries, and involutions of the continuum models. Examples are mimetic methods for spatial discretizations, variational and geometric integrators, conservative finite-volume and f...

  3. Numerical algorithms in secondary creep

    International Nuclear Information System (INIS)

    Feijoo, R.A.; Taroco, E.

    1980-01-01

    The problem of stationary creep is presented as well as its variational formulation, when weak constraints are established, capable of assuring one single solution. A second, so-called elasto-creep problem, is further analysed, together with its variational formulation. It is shown that its stationary solution coincides with that of the stationary creep and the advantages of this formulation with respect to the former one is emphasized. Some numerical applications showing the efficiency of the method propesed are finally presented [pt

  4. Numerical and symbolic scientific computing

    CERN Document Server

    Langer, Ulrich

    2011-01-01

    The book presents the state of the art and results and also includes articles pointing to future developments. Most of the articles center around the theme of linear partial differential equations. Major aspects are fast solvers in elastoplasticity, symbolic analysis for boundary problems, symbolic treatment of operators, computer algebra, and finite element methods, a symbolic approach to finite difference schemes, cylindrical algebraic decomposition and local Fourier analysis, and white noise analysis for stochastic partial differential equations. Further numerical-symbolic topics range from

  5. Numerical precision and data structures

    Science.gov (United States)

    Schenk, W.

    1978-01-01

    Technical proposals and recommendations for revising FORTRAN were studied and categorized. In the area of numerical precision, the proposals basically agree on a set of necessary parameters, although a wide range of nomenclature and specific function names are used. Environmental parameters identified include the following: (1) base of floating point representation, (2) largest positive real number, exponent and integer, (3) largest negative real number, exponent and integer, (4) number of significant digits, and (5) exponent bias.

  6. Optimal portfolios through Bellman numerics

    OpenAIRE

    Bølviken, Erik; Henriksen, Pål Nicolai

    2010-01-01

    A numerical strategy for solving low-dimensional Bellman equations through the traditional backwards recursion is formulated. A simple error analysis suggests that the approach handles many multi-period portfolio selection problems, and a number of examples confirm this experimentally. Minimum downside risk procedures are studied and it is demonstrated how multi-period efficient frontiers can be calculated for such criteria. A closing example examines the impact of heavy-tailed distributions ...

  7. Numerical Simulation of Complex Wetting

    OpenAIRE

    Linder, Nicklas

    2015-01-01

    Many multiphase-flows are governed by capillarity and wettability such as spray painting and ink-jet printing applications, cooling devices of small scaled microchips and inside internal combustion engines referring to the fuel injection. The contact angle is a decisive parameter when such a system is analyzed. If the contact angle is in the bounds of the hysteresis, the contact line is pinned (immobile). An accurate numerical simulation is not trivial because of the contact line singularity,...

  8. Numerical models as interactive art

    Science.gov (United States)

    Donchyts, G.; Baart, F.; van de Pas, B.; Joling, A.

    2017-12-01

    We capture our understanding of the environment in advanced computer models. We use these numerical models to simulate the growth of deltas, meandering rivers, dune erosion, river floodings, effects of interventions. If presented with care, models can help understand the complexity of our environment and show the beautiful patterns of nature. While the topics are relevant and appealing to the general public the use of numerical models has been limited to technical users. Not many people have appreciations for the pluriform of options, esoteric user interfaces, manual editing of configuration files and extensive jargon. The models are static, you can start them, but then you have to wait, usually hours or more, for the results to become available, not something that you could imagine resulting in an immersive, interactive experience for the general public. How can we go beyond just using results? How can we adapt existing numerical models so they can be used in an interactive environment? How can we touch them and feel them? Here we show how we adapted existing models (Delft3D, Lisflood, XBeach) and reused them in as the basis for interactive exhibitions in museums with an educative goal. We present our structured approach which consists of combining a story, inspiration, a canvas, colors, shapes and interactive elements. We show how the progression from simple presentation forms to interactive art installations.

  9. Numerical methods for turbulent flow

    Science.gov (United States)

    Turner, James C., Jr.

    1988-01-01

    It has generally become accepted that the Navier-Strokes equations predict the dynamic behavior of turbulent as well as laminar flows of a fluid at a point in space away form a discontinuity such as a shock wave. Turbulence is also closely related to the phenomena of non-uniqueness of solutions of the Navier-Strokes equations. These second order, nonlinear partial differential equations can be solved analytically for only a few simple flows. Turbulent flow fields are much to complex to lend themselves to these few analytical methods. Numerical methods, therefore, offer the only possibility of achieving a solution of turbulent flow equations. In spite of recent advances in computer technology, the direct solution, by discrete methods, of the Navier-Strokes equations for turbulent flow fields is today, and in the foreseeable future, impossible. Thus the only economically feasible way to solve practical turbulent flow problems numerically is to use statistically averaged equations governing mean-flow quantities. The objective is to study some recent developments relating to the use of numerical methods to study turbulent flow.

  10. Numerical ability predicts mortgage default

    Science.gov (United States)

    Gerardi, Kristopher; Goette, Lorenz; Meier, Stephan

    2013-01-01

    Unprecedented levels of US subprime mortgage defaults precipitated a severe global financial crisis in late 2008, plunging much of the industrialized world into a deep recession. However, the fundamental reasons for why US mortgages defaulted at such spectacular rates remain largely unknown. This paper presents empirical evidence showing that the ability to perform basic mathematical calculations is negatively associated with the propensity to default on one’s mortgage. We measure several aspects of financial literacy and cognitive ability in a survey of subprime mortgage borrowers who took out loans in 2006 and 2007, and match them to objective, detailed administrative data on mortgage characteristics and payment histories. The relationship between numerical ability and mortgage default is robust to controlling for a broad set of sociodemographic variables, and is not driven by other aspects of cognitive ability. We find no support for the hypothesis that numerical ability impacts mortgage outcomes through the choice of the mortgage contract. Rather, our results suggest that individuals with limited numerical ability default on their mortgage due to behavior unrelated to the initial choice of their mortgage. PMID:23798401

  11. Numerical ability predicts mortgage default.

    Science.gov (United States)

    Gerardi, Kristopher; Goette, Lorenz; Meier, Stephan

    2013-07-09

    Unprecedented levels of US subprime mortgage defaults precipitated a severe global financial crisis in late 2008, plunging much of the industrialized world into a deep recession. However, the fundamental reasons for why US mortgages defaulted at such spectacular rates remain largely unknown. This paper presents empirical evidence showing that the ability to perform basic mathematical calculations is negatively associated with the propensity to default on one's mortgage. We measure several aspects of financial literacy and cognitive ability in a survey of subprime mortgage borrowers who took out loans in 2006 and 2007, and match them to objective, detailed administrative data on mortgage characteristics and payment histories. The relationship between numerical ability and mortgage default is robust to controlling for a broad set of sociodemographic variables, and is not driven by other aspects of cognitive ability. We find no support for the hypothesis that numerical ability impacts mortgage outcomes through the choice of the mortgage contract. Rather, our results suggest that individuals with limited numerical ability default on their mortgage due to behavior unrelated to the initial choice of their mortgage.

  12. THE DESIGN OF AXIAL PUMP ROTORS USING THE NUMERICAL METHODS

    Directory of Open Access Journals (Sweden)

    Ali BEAZIT

    2010-06-01

    Full Text Available The researches in rotor theory, the increasing use of computers and the connection between design and manufacturing of rotors, have determined the revaluation and completion of classical rotor geometry. This paper presents practical applications of mathematical description of rotor geometry. A program has been created to describe the rotor geometry for arbitrary shape of the blade. The results can be imported by GAMBIT - a processor for geometry with modeling and mesh generations, to create a mesh needed in hydrodynamics analysis of rotor CFD. The results obtained are applicable in numerical methods and are functionally convenient for CAD/CAM systems.

  13. Numerical prediction of wave impact loads on multiple rectangular beams

    DEFF Research Database (Denmark)

    Mayer, Stefan; Nielsen, Kristian Bendix; Hansen, E.A.

    2005-01-01

    Wave impact on one and two structural beams with rectangular cross section is simulated with a two-dimensional finite volume method, solving the unsteady Euler equations and employing a VOF-type method for the description of the free surface. Four different test series are carried out, each...... corresponding to a wave impact scenario in the experimental database of Sterndorff [2002]. For the case of wave impact on a single structural element the numerical results show good agreement with measured force time histories. In the computations featuring two beams, the prediction of the shadowing effect...

  14. XML Translator for Interface Descriptions

    Science.gov (United States)

    Boroson, Elizabeth R.

    2009-01-01

    A computer program defines an XML schema for specifying the interface to a generic FPGA from the perspective of software that will interact with the device. This XML interface description is then translated into header files for C, Verilog, and VHDL. User interface definition input is checked via both the provided XML schema and the translator module to ensure consistency and accuracy. Currently, programming used on both sides of an interface is inconsistent. This makes it hard to find and fix errors. By using a common schema, both sides are forced to use the same structure by using the same framework and toolset. This makes for easy identification of problems, which leads to the ability to formulate a solution. The toolset contains constants that allow a programmer to use each register, and to access each field in the register. Once programming is complete, the translator is run as part of the make process, which ensures that whenever an interface is changed, all of the code that uses the header files describing it is recompiled.

  15. Probabilistic description of traffic flow

    International Nuclear Information System (INIS)

    Mahnke, R.; Kaupuzs, J.; Lubashevsky, I.

    2005-01-01

    A stochastic description of traffic flow, called probabilistic traffic flow theory, is developed. The general master equation is applied to relatively simple models to describe the formation and dissolution of traffic congestions. Our approach is mainly based on spatially homogeneous systems like periodically closed circular rings without on- and off-ramps. We consider a stochastic one-step process of growth or shrinkage of a car cluster (jam). As generalization we discuss the coexistence of several car clusters of different sizes. The basic problem is to find a physically motivated ansatz for the transition rates of the attachment and detachment of individual cars to a car cluster consistent with the empirical observations in real traffic. The emphasis is put on the analogy with first-order phase transitions and nucleation phenomena in physical systems like supersaturated vapour. The results are summarized in the flux-density relation, the so-called fundamental diagram of traffic flow, and compared with empirical data. Different regimes of traffic flow are discussed: free flow, congested mode as stop-and-go regime, and heavy viscous traffic. The traffic breakdown is studied based on the master equation as well as the Fokker-Planck approximation to calculate mean first passage times or escape rates. Generalizations are developed to allow for on-ramp effects. The calculated flux-density relation and characteristic breakdown times coincide with empirical data measured on highways. Finally, a brief summary of the stochastic cellular automata approach is given

  16. Content of system design descriptions

    International Nuclear Information System (INIS)

    1998-10-01

    A System Design Description (SDD) describes the requirements and features of a system. This standard provides guidance on the expected technical content of SDDs. The need for such a standard was recognized during efforts to develop SDDs for safety systems at DOE Hazard Category 2 nonreactor nuclear facilities. Existing guidance related to the corresponding documents in other industries is generally not suitable to meet the needs of DOE nuclear facilities. Across the DOE complex, different contractors have guidance documents, but they vary widely from site to site. While such guidance documents are valuable, no single guidance document has all the attributes that DOE considers important, including a reasonable degree of consistency or standardization. This standard is a consolidation of the best of the existing guidance. This standard has been developed with a technical content and level of detail intended to be most applicable to safety systems at DOE Hazard Category 2 nonreactor nuclear facilities. Notwithstanding that primary intent, this standard is recommended for other systems at such facilities, especially those that are important to achieving the programmatic mission of the facility. In addition, application of this standard should be considered for systems at other facilities, including non-nuclear facilities, on the basis that SDDs may be beneficial and cost-effective

  17. Quality Assurance Requirements and Description

    International Nuclear Information System (INIS)

    Ram Murthy

    2002-01-01

    The Quality Assurance Requirements and Description (QARD) is the principal Quality Assurance (QA) document for the Civilian Radioactive Waste Management Program (Program). It establishes the minimum requirements for the QA program [INTRODUCTION :1p2s (NOT A REQUIREMENT)]. The QARD contains regulatory requirements and program commitments necessary for the development of an effective QA program [INTRODUCTION :1p3s (NOT A REQUIREMENT)]. Implementing documents must be based on, and be consistent with the QARD. The QARD applies to the following: (1) Acceptance of spent nuclear fuel and high-level waste. (2) Transport of spent nuclear fuel and high-level waste. (3) Storage of spent nuclear fuel through receipt of storage cask certification or a facility operating license. (4) Monitored Geologic Repository, including the site characterization activities [Exploratory Studies Facility (ESF) and surface based testing], through receipt of an operating license. (5) High-level waste form development through qualification, production, and acceptance. (6) Characterization of DOE spent nuclear fuel, and conditioning through acceptance of DOE spent nuclear fuel. Section 2.0, Quality Assurance Program, defines in greater detail criteria for determining work subject to the QARD

  18. Description of the Triton reactor

    International Nuclear Information System (INIS)

    1967-09-01

    The Triton reactor is an enriched uranium pool type reactor. It began operation in 1959, after a divergence made on the June 30 the same year. Devoted to studies of radiation protection, its core can be displaced in the longitudinal direction. The pool can be separated in two unequal compartments by a wall. The Triton core is placed in a small compartment, the Nereide core in the big compartment. A third compartment without water is called Naiade II, is separated by a concrete wall in which is made a window closed by an aluminium plate (2.50 m x 2.70 m). The Naiade II hole is useful for protection experiments using the Nereide core. After a complete refitting, the power of the triton reactor that reached progressively from 1.2 MW to 2 MW, then 3 MW has reached in August 1965 6.5 MW. The reactor has been specialized in irradiations in fix position, the core become fix, the nereide core has been hung mobile. Since it has been used for structure materials irradiation, for radioelements fabrication and fundamental research. The following descriptions are valid for the period after August 1965 [fr

  19. Experimental and numerical investigation on two-phase flow instabilities

    Energy Technology Data Exchange (ETDEWEB)

    Ruspini, Leonardo Carlos

    2013-03-01

    Two-phase flow instabilities are experimentally and numerically studied within this thesis. In particular, the phenomena called Ledinegg instability, density wave oscillations and pressure drop oscillations are investigated. The most important investigations regarding the occurrence of two-phase flow instabilities are reviewed. An extensive description of the main contributions in the experimental and analytical research is presented. In addition, a critical discussion and recommendations for future investigations are presented. A numerical framework using a hp-adaptive method is developed in order to solve the conservation equations modelling general thermo-hydraulic systems. A natural convection problem is analysed numerically in order to test the numerical solver. Moreover, the description of an adaptive strategy to solve thermo-hydraulic problems is presented. In the second part of this dissertation, a homogeneous model is used to study Ledinegg, density wave and pressure drop oscillations phenomena numerically. The dynamic characteristics of the Ledinegg (flow excursion) phenomenon are analysed through the simulation of several transient examples. In addition, density wave instabilities in boiling and condensing systems are investigated. The effects of several parameters, such as the fluid inertia and compressibility volumes, on the stability limits of Ledinegg and density wave instabilities are studied, showing a strong influence of these parameters. Moreover, the phenomenon called pressure drop oscillations is numerically investigated. A discussion of the physical representation of several models is presented with reference to the obtained numerical results. Finally, the influence of different parameters on these phenomena is analysed. In the last part, an experimental investigation of these phenomena is presented. The designing methodology used for the construction of the experimental facility is described. Several simulations and a non

  20. Numerical simulation of draft tube flow of a bulb turbine

    Energy Technology Data Exchange (ETDEWEB)

    Coelho, J.G. [Federal University of Triangulo Mineiro, Institute of Technological and Exact Sciences, Avenida Doutor Randolfo Borges Junior, 1250 – Uberaba – MG (Brazil); Brasil, A.C.P. Jr. [University of Brasilia, Department of Mechanical Engineering, Campus Darcy Ribeiro, Brasilia – DF (Brazil)

    2013-07-01

    In this work a numerical study of draft tube of a bulb hydraulic turbine is presented, where a new geometry is proposed. This new proposal of draft tube has the unaffected ratio area, a great reduction in his length and approximately the same efficiency of the draft tube conventionally used. The numerical simulations were obtained in commercial software of calculation of flow (CFX-14), using the turbulence model SST, that allows a description of the field fluid dynamic near to the wall. The simulation strategy has an intention of identifying the stall of the boundary layer precisely limits near to the wall and recirculations in the central part, once those are the great causes of the decrease of efficiency of a draft tube. Finally, it is obtained qualitative and quantitative results about the flow in draft tubes.

  1. Numeric computation and statistical data analysis on the Java platform

    CERN Document Server

    Chekanov, Sergei V

    2016-01-01

    Numerical computation, knowledge discovery and statistical data analysis integrated with powerful 2D and 3D graphics for visualization are the key topics of this book. The Python code examples powered by the Java platform can easily be transformed to other programming languages, such as Java, Groovy, Ruby and BeanShell. This book equips the reader with a computational platform which, unlike other statistical programs, is not limited by a single programming language. The author focuses on practical programming aspects and covers a broad range of topics, from basic introduction to the Python language on the Java platform (Jython), to descriptive statistics, symbolic calculations, neural networks, non-linear regression analysis and many other data-mining topics. He discusses how to find regularities in real-world data, how to classify data, and how to process data for knowledge discoveries. The code snippets are so short that they easily fit into single pages. Numeric Computation and Statistical Data Analysis ...

  2. Numerical modeling of shoreline undulations part 1: Constant wave climate

    DEFF Research Database (Denmark)

    Kærgaard, Kasper Hauberg; Fredsøe, Jørgen

    2013-01-01

    This paper presents a numerical study of the non-linear development of alongshore undulations up to fully developed quasi-steady equilibrium. A numerical model which describes the longshore sediment transport along arbitrarily shaped shorelines is applied, based on a spectral wave model, a depth...... integrated flow model, a wave-phase resolving sediment transport description and a one-line shoreline model.First the length of the shoreline undulations is determined in the linear regime using a stability analysis. Next the further evolution from the linear to the fully non-linear regime is described....... In the fully non-linear regime down-drift spits and migrating shoreline undulations are described.Three different shoreline shapes are found depending on the wave conditions: undulations with no spits, undulations with shore parallel spit and undulations with reconnecting spits. © 2012 Published by Elsevier B.V....

  3. Numerical modeling of parallel-plate based AMR

    DEFF Research Database (Denmark)

    In this work we present an improved 2-dimensional numerical model of a parallel-plate based AMR. The model includes heat transfer in fluid and magnetocaloric domains respectively. The domains are coupled via inner thermal boundaries. The MCE is modeled either as an instantaneous change between high...... comparison with experiment. This is used as a firm basis for predicting and optimizing performance of a large variety of regenerator configurations in order to study and learn the trends, tendencies and even absolute values of temperature span and cooling powers for the optimal (and buildable) designs...... in the direction not resolved through a realistic description of the thermal resistance between localized points in the bed and the ambient. The results show that the additions to the model place numerical modeling of AMR very close to the corresponding experimental results. Thus, the model is verified by direct...

  4. Numerical modeling of batch formation in waste incineration plants

    Directory of Open Access Journals (Sweden)

    Obroučka Karel

    2015-03-01

    Full Text Available The aim of this paper is a mathematical description of algorithm for controlled assembly of incinerated batch of waste. The basis for formation of batch is selected parameters of incinerated waste as its calorific value or content of pollutants or the combination of both. The numerical model will allow, based on selected criteria, to compile batch of wastes which continuously follows the previous batch, which is a prerequisite for optimized operation of incinerator. The model was prepared as for waste storage in containers, as well as for waste storage in continuously refilled boxes. The mathematical model was developed into the computer program and its functionality was verified either by practical measurements or by numerical simulations. The proposed model can be used in incinerators for hazardous and municipal waste.

  5. High precision analytical description of the allowed β spectrum shape

    Science.gov (United States)

    Hayen, Leendert; Severijns, Nathal; Bodek, Kazimierz; Rozpedzik, Dagmara; Mougeot, Xavier

    2018-01-01

    A fully analytical description of the allowed β spectrum shape is given in view of ongoing and planned measurements. Its study forms an invaluable tool in the search for physics beyond the standard electroweak model and the weak magnetism recoil term. Contributions stemming from finite size corrections, mass effects, and radiative corrections are reviewed. Particular focus is placed on atomic and chemical effects, where the existing description is extended and analytically provided. The effects of QCD-induced recoil terms are discussed, and cross-checks were performed for different theoretical formalisms. Special attention was given to a comparison of the treatment of nuclear structure effects in different formalisms. Corrections were derived for both Fermi and Gamow-Teller transitions, and methods of analytical evaluation thoroughly discussed. In its integrated form, calculated f values were in agreement with the most precise numerical results within the aimed for precision. The need for an accurate evaluation of weak magnetism contributions was stressed, and the possible significance of the oft-neglected induced pseudoscalar interaction was noted. Together with improved atomic corrections, an analytical description was presented of the allowed β spectrum shape accurate to a few parts in 10-4 down to 1 keV for low to medium Z nuclei, thereby extending the work by previous authors by nearly an order of magnitude.

  6. 25 Years of Self-organized Criticality: Numerical Detection Methods

    Science.gov (United States)

    McAteer, R. T. James; Aschwanden, Markus J.; Dimitropoulou, Michaila; Georgoulis, Manolis K.; Pruessner, Gunnar; Morales, Laura; Ireland, Jack; Abramenko, Valentyna

    2016-01-01

    The detection and characterization of self-organized criticality (SOC), in both real and simulated data, has undergone many significant revisions over the past 25 years. The explosive advances in the many numerical methods available for detecting, discriminating, and ultimately testing, SOC have played a critical role in developing our understanding of how systems experience and exhibit SOC. In this article, methods of detecting SOC are reviewed; from correlations to complexity to critical quantities. A description of the basic autocorrelation method leads into a detailed analysis of application-oriented methods developed in the last 25 years. In the second half of this manuscript space-based, time-based and spatial-temporal methods are reviewed and the prevalence of power laws in nature is described, with an emphasis on event detection and characterization. The search for numerical methods to clearly and unambiguously detect SOC in data often leads us outside the comfort zone of our own disciplines—the answers to these questions are often obtained by studying the advances made in other fields of study. In addition, numerical detection methods often provide the optimum link between simulations and experiments in scientific research. We seek to explore this boundary where the rubber meets the road, to review this expanding field of research of numerical detection of SOC systems over the past 25 years, and to iterate forwards so as to provide some foresight and guidance into developing breakthroughs in this subject over the next quarter of a century.

  7. A new description of the superstring

    Energy Technology Data Exchange (ETDEWEB)

    Berkovits, Nathan [Sao Paulo Univ., SP (Brazil). Inst. de Fisica. Dept. de Fisica Matematica]. E-mail: nberkovi@snfma2.if.usp.br

    1996-07-01

    This is a review of the new manifestly spacetime-supersymmetric description of the superstring. The new description contains N=2 world sheet supersymmetry, and is related by a field redefinition to the standard RNS description. It is especially convenient for four-dimensional compactifications since S O (3,1) super-Poincare invariance can be made manifest. Parts of this work have been done in collaboration with Warren Siegel and Cumrun Vafa. (author)

  8. Audio Description as a Pedagogical Tool

    OpenAIRE

    Georgina Kleege; Scott Wallin

    2015-01-01

    Audio description is the process of translating visual information into words for people who are blind or have low vision. Typically such description has focused on films, museum exhibitions, images and video on the internet, and live theater. Because it allows people with visual impairments to experience a variety of cultural and educational texts that would otherwise be inaccessible, audio description is a mandated aspect of disability inclusion, although it remains markedly underdeveloped ...

  9. Building Program Models Incrementally from Informal Descriptions.

    Science.gov (United States)

    1979-10-01

    AD-AOB6 50 STANFORD UNIV CA DEPT OF COMPUTER SCIENCE F/G 9/2 BUILDING PROGRAM MODELS INCREMENTALLY FROM INFORMAL DESCRIPTION--ETC(U) OCT 79 B P...port SCI.ICS.U.79.2 t Building Program Models Incrementally from Informal Descriptions by Brian P. McCune Research sponsored by Defense Advanced...TYPE OF REPORT & PERIOD COVERED Building Program Models Incrementally from Informal Descriptions. , technical, October 1979 6. PERFORMING ORG

  10. Sentido del rol de profesional de enfermería en el primer nivel de atención en salud Sense of the professional`s role of nursing in the first level of attention in health Manizales (Colombia

    Directory of Open Access Journals (Sweden)

    María Eugenia Pico Merchán

    2005-03-01

    Full Text Available Este trabajo busca develar vivencias frente al rol en torno a: valor atribuido a su rol en esta área, creencias sobre el trabajo y quehacer profesional. El análisis y la interpretación se realizan con base en datos recogidos por entrevistas en profundidad a dieciséis enfermeras. De la información emergen categorías definitivas: enfermera como persona, cuidados de enfermería, enfermera en organización de salud y, contexto normativo, educativo y socioeconómico; después de analizadas se identifica que la enfermera tiene un conflicto entre: formación del pregrado y oferta laboral; determinantes sociales, normativos y educativos del rol y ejercicio del mismo; cuidado a las personas y cuidado institucional. La enfermera se mueve entre ese conflicto y la resignificación de vivencias laborales por la utilidad en su vida personal y familiar, el prestigio de su labor administrativa, el deber de cuidar y satisfacción por la abogacía a favor de los usuarios.This work can be described as an ethnography of the sense that the nurses have of their role as first level healthcare providers in Manizales, Colombia. As well as their experiences in their role as nurses, concerning the value attributed to their profession, the beliefs that other have of their work and occupation. The analysis and the interpretation were done by means of the information obtained through in-depth interviews with sixteen nurses. Definite categories emerged from the information such as: the nurse as a person; nursing cares; the nurse in the health organization; and, the normative, educational and socioeconomic context. After analyzing the categories it was identified that nurses have a conflict between undergraduate formation and job opportunities; social, normative and educational determiners of the role and execution of their occupation; taking care of others and institutional care. The nurses are torn between this conflict and the resignificance of labor experiences to be

  11. CHANGE OF ATTITUDES AND VALUES BEFORE THE ENERGY AFTER THE USE OF A ROLE-PLAYING GAME CAMBIO DE ACTITUDES Y VALORES ANTE LA ENERGÍA TRAS EL USO DE UN JUEGO DE ROL

    Directory of Open Access Journals (Sweden)

    Jorge Hernández Carbonell

    2010-11-01

    Full Text Available The role-playing game in education have been defined as dramatizations that are carry out around a situation makes specific and use the allocation of papers to students, who will have as opposed to, to defend with arguments an opinion (previously outlined a problem. More and more used in the formal and non formal education, they emphasize between its advantages turning the playful thing learning, harnessing the learning of attitudes and values and the connection that is made with the real life among others. The use of a role-playing game in an educative investigation on change of attitudes and values before the power resources whose educative results were positive, allowed to repeat this investigation using the variable “utilization/no use of the role-playing game”, which granted the possibility of analyzing the importance of the role-playing game in the involution of changes in the attitudes and values of the users of these games. Los juegos de rol en educación se han definido como dramatizaciones que se vertebran en torno a una situación concreta y utilizan la asignación de papeles a alumnos, quienes deberán defender con argumentos una opinión (previamente perfilada frente a un problema. Cada vez más utilizados en la educación formal y no formal, destacan entre sus ventajas el convertir lo lúdico en aprendizaje, potenciar el aprendizaje de actitudes y valores y la conexión que se realiza con la vida real entre otros. La utilización de un juego de rol en una investigación educativa sobre cambio de actitudes y valores ante los recursos energéticos cuyos resultados educativos fueron positivos, permitió repetir dicha investigación usando la variable “utilización/no utilización del juego de rol”, lo que concedió la posibilidad de analizar la importancia de los juegos de rol en la potenciación de cambios en las actitudes y valores de los usuarios de estos juegos.

  12. Türkiye’de Telekomünikasyon Sektöründe Internet Üzerinden Örgütsel Kimlik İnşasında Kurumsal Sosyal Sorumluluğun Rolü

    Directory of Open Access Journals (Sweden)

    Emel Ozdora Akşak

    2014-12-01

    Full Text Available Çalışmada sosyal kimlik teorisi çerçevesinden yararlanılarak örgütsel kimliğin inşasına önemli katkı sağlayan halkla ilişkiler ve sosyal sorumluluk uygulamalarına odaklanılmaktadır. Halkla ilişkiler, örgütsel kimliğin inşası ve bunun ilgili paydaşlara iletilmesi için kullanılan önemli iletişim araçlarından biridir. Araştırma kapsamında Türkiye’de öne çıkan dört telekomünikasyon şirketi (Turkcell, Türk Telekom, Avea ve Vodafone ele alınarak bu şirketlerin halkla ilişkiler ve kurumsal sosyal sorumluluk faaliyetleri değerlendirilmiş ve bunların örgütsel kimlik inşasında ne şekilde ve ne etkide rolü olduğu incelenmiştir. Çalışma kapsamında incelenen telekomünikasyon şirketlerinin kurumsal Web siteleri tema düzeyinde içerik analizi uygulanarak derinlemesine incelenmiş, öne çıkan temalar ve bu temalar içerisinde kurumsal sosyal sorumluluk faaliyetlerinin rolü ortaya konulmuştur. Çalışma sonuçları Türkiye’de telekomünikasyon şirketlerinin temel iş faaliyetlerinin yanı sıra toplum faydasını ve kendi üstünlüklerini vurgulayan temalara da önem verdiklerini ve bu sayede değer yaratma ve meşru bir kimlik oluşturma çabası içerisinde olduklarını ortaya koymuştur. Ayrıca çalışma kurumsal sosyal sorumluluk faaliyetlerinin kimlik inşasında ve meşruiyet kazanmada ki önemli rolünü göstermiştir. 

  13. Disruptive Innovation in Numerical Hydrodynamics

    Energy Technology Data Exchange (ETDEWEB)

    Waltz, Jacob I. [Los Alamos National Laboratory

    2012-09-06

    We propose the research and development of a high-fidelity hydrodynamic algorithm for tetrahedral meshes that will lead to a disruptive innovation in the numerical modeling of Laboratory problems. Our proposed innovation has the potential to reduce turnaround time by orders of magnitude relative to Advanced Simulation and Computing (ASC) codes; reduce simulation setup costs by millions of dollars per year; and effectively leverage Graphics Processing Unit (GPU) and future Exascale computing hardware. If successful, this work will lead to a dramatic leap forward in the Laboratory's quest for a predictive simulation capability.

  14. Radiation transport in numerical astrophysics

    International Nuclear Information System (INIS)

    Lund, C.M.

    1983-02-01

    In this article, we discuss some of the numerical techniques developed by Jim Wilson and co-workers for the calculation of time-dependent radiation flow. Difference equations for multifrequency transport are given for both a discrete-angle representation of radiation transport and a Fick's law-like representation. These methods have the important property that they correctly describe both the streaming and diffusion limits of transport theory in problems where the mean free path divided by characteristic distances varies from much less than one to much greater than one. They are also stable for timesteps comparable to the changes in physical variables, rather than being limited by stability requirements

  15. On numerically pluricanonical cyclic coverings

    International Nuclear Information System (INIS)

    Kulikov, V S; Kharlamov, V M

    2014-01-01

    We investigate some properties of cyclic coverings f:Y→X (where X is a complex surface of general type) branched along smooth curves B⊂X that are numerically equivalent to a multiple of the canonical class of X. Our main results concern coverings of surfaces of general type with p g =0 and Miyaoka-Yau surfaces. In particular, such coverings provide new examples of multi-component moduli spaces of surfaces with given Chern numbers and new examples of surfaces that are not deformation equivalent to their complex conjugates

  16. Numerical methods for multibody systems

    Science.gov (United States)

    Glowinski, Roland; Nasser, Mahmoud G.

    1994-01-01

    This article gives a brief summary of some results obtained by Nasser on modeling and simulation of inequality problems in multibody dynamics. In particular, the augmented Lagrangian method discussed here is applied to a constrained motion problem with impulsive inequality constraints. A fundamental characteristic of the multibody dynamics problem is the lack of global convexity of its Lagrangian. The problem is transformed into a convex analysis problem by localization (piecewise linearization), where the augmented Lagrangian has been successfully used. A model test problem is considered and a set of numerical experiments is presented.

  17. Numerical experiments on galaxy clustering

    International Nuclear Information System (INIS)

    Miller, R.H.

    1983-01-01

    A study of the way observable clustering depends on expansion history is reported. Observable shapes that result from evolving otherwise identical systems are intercompared to show differences due to different expansion histories. Four cases are compared: nonexpanding, Omega 1, and two open universes with 0.10 and 0.03 as final values of Omega. There is remarkably little diffrence in observable forms for the expanding cases. The 0.03 universe expanded by a factor 500 during the experiment. This study is an example of the way numerical experiments can be used in studies of galaxy clustering

  18. Results from Numerical General Relativity

    Science.gov (United States)

    Baker, John G.

    2011-01-01

    For several years numerical simulations have been revealing the details of general relativity's predictions for the dynamical interactions of merging black holes. I will review what has been learned of the rich phenomenology of these mergers and the resulting gravitational wave signatures. These wave forms provide a potentially observable record of the powerful astronomical events, a central target of gravitational wave astronomy. Asymmetric radiation can produce a thrust on the system which may accelerate the single black hole resulting from the merger to high relative velocity.

  19. Time's arrow: A numerical experiment

    Science.gov (United States)

    Fowles, G. Richard

    1994-04-01

    The dependence of time's arrow on initial conditions is illustrated by a numerical example in which plane waves produced by an initial pressure pulse are followed as they are multiply reflected at internal interfaces of a layered medium. Wave interactions at interfaces are shown to be analogous to the retarded and advanced waves of point sources. The model is linear and the calculation is exact and demonstrably time reversible; nevertheless the results show most of the features expected of a macroscopically irreversible system, including the approach to the Maxwell-Boltzmann distribution, ergodicity, and concomitant entropy increase.

  20. Numerical Solution of Parabolic Equations

    DEFF Research Database (Denmark)

    Østerby, Ole

    approximations which depend on a step size, such as numerical integration and solution of ordinary and partial differential equations. An integral part of the error estimation is the estimation of the order of the method and can thus satisfy the inquisitive mind: Is the order what we expect it to be from theopry...... ? and how do boundary value approximations affect the overall order of the method. Knowledge of a reliable order and error estimate enables us to determine (near-)optimal step sizes to meet a prescribed error tolerance, and possibly to extrapolate to get (higher order and) better accuracy at a minimal...