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  1. Inter frame motion estimation and its application to image sequence compression: an introduction; Estimacion del movimiento Interframe y su aplicacion a la compresion de secuencias de imagenes: una introduccion

    Energy Technology Data Exchange (ETDEWEB)

    Cremy, C

    1996-12-01

    With the constant development of new communication technologies like, digital TV, teleconference, and the development of image analysis applications, there is a growing volume of data to manage. Compression techniques are required for the transmission and storage of these data. Dealing with original images would require the use of expansive high bandwidth communication devices and huge storage media. Image sequence compression can be achieved by means of inter frame estimation that consists in retrieving redundant information relative to zones where there is little motion between two frames. This paper is an introduction to some motion estimation techniques like gradient techniques, pel-recursive, block-matching, and its application to image sequence compression. (Author)

  2. Inter frame motion estimation and its application to image sequence compression: an introduction; Estimacion del movimiento interframe y su aplicacion en la compresion de secuencias de imagenes: una introduccion

    Energy Technology Data Exchange (ETDEWEB)

    Cremy, C

    1996-07-01

    With the constant development of new communication technologies like, digital TV, teleconference, and the development of image analysis applications, there is a growing volume of data to manage. Compression techniques are required for the transmission and storage of these data. Dealing with original images would require the use of expansive high bandwidth communication devices and huge storage media. Image sequence compression can be achieved by means of interframe estimation that consists in retrieving redundant information relative to zones where there is little motion between two frames. This paper is an introduction to some motion estimation techniques like gradient techniques, pel-recursive, block-matching, and its application to image sequence compression. (Author) 17 refs.

  3. Evaluacion de Mediciones Fisicas y de Ultrasonido para Estimaciones del Peso de la Pechuga

    Directory of Open Access Journals (Sweden)

    Melo JE

    2001-01-01

    Full Text Available El objetivo del presente trabajo fue evaluar la utilización de distintas mediciones como predictores del peso de la pechuga. En la experiencia 1 se utilizaron 32 pollos Anak y 32 pollos Ross, muestreados al azar de dos lotes de 400 animales de cada genotipo. A los 53 dias de edad se realizó la faena y una disección de cortes comerciales. Se tomaron los siguientes pesos: peso vivo (PV, de la canal (PC y de la pechuga (Pch. Se calculó para el análisis la proporción de cada uno sobre el peso vivo (%PC y %Pch. También se midieron el largo y el ancho de la pechuga con calibre. Se observaron diferencias entre genotipos para PV, PC, %PC, Pch y %Pch (p <0,05. Los animales de la línea Ross resultaron más pesados que los Anak, así coma su carcasa, pechuga y proporciones resultaron mayores. La Pch se correlacionó alta y positivamente con el PV. Ninguna de las mediciones con calibre in vivo significó un aumento de consideración en la precisión de la predicción de Pch. En la experiencia 2 se utilizaron 60 pollos INTA-Camperos, muestreados al azar de un lote de 100 animales. A los 69 días de edad se realizaron mediciones in vivo del largo y ancho de la pechuga con calibre, y de la profundidad por ultrasonido previo a la faena, midiéndose los mismos parámetros que en la anterior experiencia. La correlación entre PV y la Pch fue alta y positiva, pero media a baja con las mediciones con calibre. Se obtuvo una buena predicción de Pch (R²=0,75 a partir del peso vivo, del largo y de la profundidad de pechuga. La eliminación de la medición ecográfica no redujo el ajuste del modelo de manera significativa (R²=0,725.

  4. Estimaciones de Prevalencia del VIH por Género y Grupo de Riesgo en Tijuana, México: 2006

    Science.gov (United States)

    Iñiguez-Stevens, Esmeralda; Brouwer, Kimberly C.; Hogg, Robert S.; Patterson, Thomas L.; Lozada, Remedios; Magis-Rodriguez, Carlos; Elder, John P.; Viani, Rolando M.; Strathdee, Steffanie A.

    2010-01-01

    OBJETIVO Estimar la prevalencia del VIH en adultos de 15-49 años de edad en Tijuana, México - en la población general y en subgrupos de riesgo en el 2006. METODOS Se obtuvieron datos demográficos del censo Mexicano del 2005, y la prevalencia del VIH se obtuvo de la literatura. Se construyó un modelo de prevalencia del VIH para la población general y de acuerdo al género. El análisis de sensibilidad consistió en estimar errores estándar del promedio-ponderado de la prevalencia del VIH y tomar derivados parciales con respecto a cada parámetro. RESULTADOS La prevalencia del VIH es 0.54%(N = 4,347) (Rango: 0.22%–0.86%, (N = 1,750–6,944)). Esto sugiere que 0.85%(Rango: 0.39%–1.31%) de los hombres y 0.22%(Rango: 0.04%–0.40%) de las mujeres podrían ser VIH-positivos. Los hombres que tienen sexo con hombres (HSH), las trabajadoras sexuales usuarias de drogas inyectables (MTS-UDI), MTS-noUDI, mujeres UDI, y los hombres UDI contribuyeron las proporciones más elevadas de personas infectadas por el VIH. CONCLUSIONES El número de adultos VIH-positivos entre subgrupos de riesgo en la población de Tijuana es considerable, marcando la necesidad de enforcar las intervenciones de prevención en sus necesidades específicas. El presente modelo estima que hasta 1 en cada 116 adultos podrían ser VIH-positivos. PMID:19685824

  5. Estimaciones del ingreso de cloruro en hormigón y de la despasivación localizada de armaduras

    OpenAIRE

    Villagrán Zaccardi, Yuri Andrés

    2012-01-01

    El período para el inicio de la corrosión de armaduras en hormigón armado en ambiente marino está definido por la resistencia del hormigón de recubrimiento al ingreso de cloruro desde el medio. El transporte de cloruro se produce por la solución de poro actuando como vehículo, ya sea por difusión iónica, permeabilidad, absorción o migra-ción. La velocidad de ingreso se ve afectada por diversos parámetros relacionados con el medio y con el material. Pueden aplicarse diversas metodolo...

  6. Riesgo de anegamiento: estimaciones para la Cuenca Baja del Río Salado Flooding risk in the Salado River Basin

    Directory of Open Access Journals (Sweden)

    Pablo Mauricio Vázquez

    2009-12-01

    Full Text Available Está documentado que de 1986 al 2001 se incrementó en un 69% el área cultivada en sectores de la Pampa Deprimida, y que el avance agrícola se realizó sobre tierras que cíclicamente fueron afectadas por excesos de agua (anegamiento o inundación. Con el propósito de auxiliar la planificación y el ordenamiento de actividades agropecuarias en tierras de la Pampa Deprimida, nos propusimos generar información que denote el riesgo de anegamiento o inundación. Para alcanzar este objetivo se calculó la recurrencia de las precipitaciones en 20 estaciones meteorológicas y se vinculó con la frecuencia de anegamiento en los píxeles que surgió del análisis de una serie temporal de imágenes satelitales. Los resultados indican que se han registrado eventos extremos de precipitación acumulada en todas las estaciones del año y que los anegamientos acontecidos en otoño e invierno fueron más prolongados que los ocurridos en períodos primaveroestivales. Si bien el otoño e invierno son estaciones donde las áreas permanecieron anegadas por períodos de tiempo similar, la mayor recurrencia de los eventos en abril y mayo determinaron que el otoño fuese la estación crítica. Problemas severos de anegamiento comenzarían cuando las precipitaciones exceden 150-200 mm. En la serie temporal analizada, acumulaciones de precipitación de esa magnitud se vincularon con superficies anegadas que equivalen al 68,76% de la región (5.844.709 ha. El patrón de anegamiento permitió observar que estructuras antrópicas contribuyeron hasta el 2,11% del anegamiento regional, siendo los principales impedimentos para el movimiento del agua bordos en los canales 12, 11 y 9, la ruta provincial 29 (entre la localidad de Ayacucho y su cruce con el camino a Casalins y la línea férrea de Metrovías (ex FF.CC. Roca. Mediante técnicas de percepción remota se determinó que en la campaña 2003-2004, un 22,8% del área destinada a la producción de cultivos (173

  7. Estimation of charges for services of transmission of electrical energy between regions of the national electrical system; Estimacion de cargos por servicios de transmision de energia electrica entre regiones del sistema electrico nacional

    Energy Technology Data Exchange (ETDEWEB)

    Inda Ruiz, Adrian; Flores Alba, Dora Elia [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Escobar Lopez, Akihito [Comision Federal de Electricidad (Mexico)

    2002-07-01

    In order to facilitate the answer of the Comision Federal de Electricidad (CFE) to the requests of services of transmission of authorized or potential licensees, this organism devised the construction of matrices of charges that allow in a fast and direct way for specific transactions, to know the charges in which different types of transmission services incur classified by transport levels and by tension levels in which the service is asked for. These tables could be published in the media that might be judged advisable, in order that the applicant licensees have access to a preliminary estimation of the charges for the required services, without the need of going, for one first estimation, directly to the CFE for their calculation. This article presents the results of the development of a calculation tool that allows estimating, in a fast and efficient way, charges for transmission services between regions of the national electrical system. [Spanish] Para facilitar la respuesta de la Comision Federal de Electricidad (CFE) a las solicitudes de servicios de transmision de permisionarios autorizados o potenciales, esta ideo la construccion de matrices de cargos que permitan de manera rapida y directa para transacciones especificas, conocer los cargos en que incurren diferentes tipos de servicios de transmision clasificados por niveles de transporte y por niveles de tension en los que se solicita el servicio. Dichas tablas podran ser publicadas en los medios que se juzguen convenientes, con el fin de que los permisionarios solicitantes tengan acceso a una estimacion preliminar de los cargos por los servicios requeridos, sin necesidad de acudir, para una primera estimacion, directamente a la CFE para su calculo. Este articulo presenta los resultados del desarrollo de una herramienta de calculo que permite estimar, de manera rapida y eficiente, matrices de cargos por servicios de transmision entre regiones del sistema electrico nacional.

  8. Estimation of the electric potential at Los Humeros, Puebla, Mexico; Estimacion del potencial electrico del yacimiento de los Humeros, Puebla, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Morales Solano, Nora Blanca [Comision Federal de Electricidad, Perote, Veracruz (Mexico)

    2000-12-01

    The evaluation of the electric potential of geothermal reservoir allows us to estimate the stored energy and the maximum power that could be installed at determined time. The method that was employed for the evaluation is that gradual pressure depletion of the reservoir. It consists of decompressing the system until an abandonment pressure or predetermined time of exploitation is reached. Results indicate that it is possible to generate more than 250 MW during 20 years. [Spanish] La evaluacion del potencial electrico del yacimiento geotermico permite estimar la energia recuperable y la potencia maxima que se puede instalar en un tiempo determinado. El metodo que se empleo para la evaluacion es el de descompresion gradual del yacimiento, que consiste en despresurizar el sistema hasta llegar a una presion de abandono de explotacion predeterminado, y calcular cual es la maxima potencia electrica del yacimiento bajo tales condiciones. El resultado indica que en Los Humeros es posible generar mas de 250 MW durante 20 anos.

  9. Estimation of the resource and technological prospective of biomass as renewable energy in Mexico (Annexe 2 in 'A vision of year 2030 on the use of the renewable energies in Mexico'); Estimacion del recurso y prospectiva tecnologica de la biomasa como energetico renovable en Mexico (Anexo 2 en 'Una vision al 2030 de la utilizacion de las energias renovables en Mexico')

    Energy Technology Data Exchange (ETDEWEB)

    Masera, Omar R [Centro de Investigaciones en Ecosistemas, Universidad Nacional Autonoma de Mexico, D.F.(Mexico); Agullon, Javier; Gamino, Benjamin [Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico, D.F.(Mexico)

    2005-08-15

    The work that next appears is a first effort towards the estimation of the resource and technological prospective of the biomass energy as renewable energy in Mexico. It tries to give an overview considering the present situation of energy plantations, production of alcohol from biomass as well as of the production of agricultural remainders, at worldwide scale as well as in our country. The report includes very general estimations of the of biomass resource, production costs, technological analyses, costs of investment and production of energy and technological prospective to 25 years in each one of the previously mentioned headings. [Spanish] El trabajo que a continuacion se presenta es un primer esfuerzo hacia la estimacion del recurso y prospectiva tecnologica de la biomasa como energetico renovable en Mexico. Pretende dar un panorama general estimando la situacion actual de plantaciones energeticas, de produccion de alcoholes a partir de biomasa asi como de produccion de residuos agricolas, tanto a escala mundial como en nuestro pais. El informe abarca estimaciones muy generales del recurso de biomasa, costos de produccion, analisis tecnologicos, costos de inversion y de produccion de energia y prospectiva tecnologica a 25 anos en cada uno de los rubros mencionados anteriormente.

  10. The Completeness Theorem of Gödel - An Introduction to ...

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 6; Issue 7. The Completeness Theorem of Gödel - An Introduction to Mathematical Logic. S M Srivastava. General Article Volume 6 Issue 7 July 2001 pp 29-41. Fulltext. Click here to view fulltext PDF. Permanent link:

  11. A gentle introduction to epistemic planning: The DEL approach

    DEFF Research Database (Denmark)

    Bolander, Thomas

    2017-01-01

    Epistemic planning can be used for decision making in multi-agent situations with distributed knowledge and capabilities. Dynamic Epistemic Logic (DEL) has been shown to provide a very natural and expressive framework for epistemic planning. In this paper, we aim to give an accessible introduction...... to DEL-based epistemic planning. The paper starts with the most classical framework for planning, STRIPS, and then moves towards epistemic planning in a number of smaller steps, where each step is motivated by the need to be able to model more complex planning scenarios....

  12. Estimation of the resource and technological prospective of biomass as renewable energy in Mexico (Annexe 2 in 'A vision of year 2030 on the use of the renewable energies in Mexico'); Estimacion del recurso y prospectiva tecnologica de la biomasa como energetico renovable en Mexico (Anexo 2 en 'Una vision al 2030 de la utilizacion de las energias renovables en Mexico')

    Energy Technology Data Exchange (ETDEWEB)

    Masera, Omar R [Centro de Investigaciones en Ecosistemas, Universidad Nacional Autonoma de Mexico, D.F.(Mexico); Agullon, Javier; Gamino, Benjamin [Instituto de Ingenieria, Universidad Nacional Autonoma de Mexico, D.F.(Mexico)

    2005-08-15

    The work that next appears is a first effort towards the estimation of the resource and technological prospective of the biomass energy as renewable energy in Mexico. It tries to give an overview considering the present situation of energy plantations, production of alcohol from biomass as well as of the production of agricultural remainders, at worldwide scale as well as in our country. The report includes very general estimations of the of biomass resource, production costs, technological analyses, costs of investment and production of energy and technological prospective to 25 years in each one of the previously mentioned headings. [Spanish] El trabajo que a continuacion se presenta es un primer esfuerzo hacia la estimacion del recurso y prospectiva tecnologica de la biomasa como energetico renovable en Mexico. Pretende dar un panorama general estimando la situacion actual de plantaciones energeticas, de produccion de alcoholes a partir de biomasa asi como de produccion de residuos agricolas, tanto a escala mundial como en nuestro pais. El informe abarca estimaciones muy generales del recurso de biomasa, costos de produccion, analisis tecnologicos, costos de inversion y de produccion de energia y prospectiva tecnologica a 25 anos en cada uno de los rubros mencionados anteriormente.

  13. ¿Son Fiables las Estimaciones de Pobreza en América Latina?

    OpenAIRE

    Sanjay G. Reddy

    2008-01-01

    ¿Cuál es el nivel de pobreza de ingresos en América Latina? ¿Ha estado disminuyendo? ¿Son fiables las estimaciones actuales? El enfoque más influyente para medir la pobreza de ingresos a nivel regional y mundial es él utilizado por el Banco Mundial, que establece líneas internacionales de pobreza de ?un dólar al día? y ?dos dólares al día? por persona. El banco utiliza factores de ?paridad del poder adquisitivo? (PPA) para transformar estas líneas internacionales en monedas locales. (...)...

  14. Estimate potential evaporation and solar radiation in the Yaqui valley, Sonora, Mexico, using data from satellite; Estimacion de evaporacion y radiacion solar en el valle del Yaqui, Sonora, usando datos de satelite

    Energy Technology Data Exchange (ETDEWEB)

    J Watts, Christopher; Rodriguez, Julio Cesar [Instituto del Medio Ambiente y el Desarrollo sustentable del estado de Sonora (Mexico); Garatuza Payan, Jaime [Instituto Tecnologico de Sonora (Mexico); Henk de Bruin [Universidad Agricola de Wageningen (Netherlands); Stewart, John [Universidad de Southampton (United Kingdom)

    1999-12-01

    The data from tow automatic weather stations in the Yaqui valley were used to estimate potential evaporation using the Makkink formula, based on observed incoming solar radiation and climatological values of air temperature. The usefulness of this formula was assessed by comparison with the Penman-Monteith, Penman and Priestley-Taylor formula and measurements of net radiation. A methodology was presented for estimating incoming solar radiation using visible band data from the GOES satellite. Comparisons against ground-based measurements from two pyranometers installed in the Yaqui valley gave good results, particularly in months with low cloud cover. Images for August 1993 were used to produce a map of the spatial distribution of potential evaporation. [Spanish] Para calcular la evaporacion potencial en el valle del Yaqui, usando la formula de Makkink, se utilizaron datos de dos estaciones meteorologicas automaticas. La mencionada formula se basa en la radiacion solar incidente observada y en ciertos valores climatologicos de temperatura del aire. Se evaluo la utilidad de esta formula, comparandola con las de Penman-Monteith, Pennan y Priestley-Taylor, asi como con mediciones de radiacion neta. Se desarrollo una metodologia para estimar la radiacion solar incidente usando la banda visible del satelite GOES. Se hizo una comparacion con mediciones de dos piranometros instalados en el valla del Yaqui, obteniendose buenos resultados, principalmente en meses con poca nubosidad. Se utilizaron imagenes de agosto de 1993 para producir un mapa de la distribucion espacial de la evaporacion potencial.

  15. Estimation of the Energy Content in Maritaro; Northern Sector of the Los Azufres, Michoacan, Mexico Geothermal Field; Estimacion de la energia contenida en Maritaro, sector norte del campo geotermico de Los Azufres, Michoacan, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Suarez Arriaga, Mario Cesar [Gerencia de Proyectos Geotermoelectricos de la Comision Federal de Electricidad, Morelia (Mexico)

    1997-05-01

    The methodology, the conceptual synthetic model and results obtained during the modeling and numerical simulation of Maritaro, northern sector of the Los Azufres, Michoacan, Mexico hydrothermal system, are reported. A Central objective of this work, was to carry out an updated evaluation of the reservoir`s energy content and to estimate, between tolerable margins of error, the longevity and approximate amount of useful energy that could be transformed in electricity. The probable initial state and the period of exploitation 1980-1996 were satisfactorily reproduced by the numerical model. The natural thermodynamic state, estimated for the reservoir before its commercial exploitation begun, corresponds to the compressed liquid region, at 92 bar of average pressure, an average temperature of 301 degrees celsius, with an enthalpy of 1 344 kj/kg. The hottest zones are located toward the center and eastern portions of the field, and the colder regions, at the western periphery. It was considered a minimum volume of exploitable reservoir equal to 49 km{sup 3}, and a maximum volume, including a possible western reserve zone, of 74 km{sup 3}. Several scenarios were numerically studied, including the installation from 75 MWe up to 400 MWe. The 280 MWe power is considered to be the maximum feasible capacity to be installed in the minimum presently known volume. The 400 MWe power characterize the upper, hypothetical limit capacity, assuming that the reserve zone is variable. This last stage having the highest risk. [Espanol] En este documento se reporta la metodologia sintetico conceptual y los resultados obtenidos mediante el modelado matematico y la simulacion numerica de Maritaro, sector norte del sistema hidrotermal de Los Azufres, Michoacan, Mexico. El objetivo central del trabajo fue realizar una evaluacion actualizada de la capacidad energetica contenida en este reservorio y estimar, dentro de margenes tolerables de error, la longevidad y cantidad aproximada de energia

  16. Calculation of the hydrogen produced by a PEM electrolyzer based on solar radiation in Zacatecas; Estimacion del hidrogeno producido por un electrolizador PEM a partir de la radiacion solar en Zacatecas

    Energy Technology Data Exchange (ETDEWEB)

    Duron-Torres, S. M.; Villagrana-Munoz, L.E.; Garcia-Saldivar, V.M. [Universidad Autonoma de Zacatecas, Zacatecas (Mexico)]. E-mail: duronsm@prodigy.net.mx; Arriaga-Hurtado, L.G. [Centro de Investigacion y Desarrollo Tecnologico en Electroquimica, Pedro Escobedo, Queretaro (Mexico)

    2009-09-15

    This work presents the calculation of the amount of hydrogen obtained from the use of a proton exchange membrane electrolysis cell. Measurements performed at the solarimeter station of the Campus Siglo XXI at the Zacatecas Autonomous University were used as a basis. Solar radiation was analyzed for the period November 2007 to April 2008, corresponding to when there is less solar radiation. The amount of average irradiation measured was de 6.6 kW-h/ m{sup 2}. The evaluation of the solar-hydrogen system was conducted with linear regressions of the behavior of the hydrogen flow in LN/min versus the solar irradiance in W/m{sup 2} for a PEM electrolyzer. The results obtained indicate that the maximum amount of hydrogen produced occurred in the month of April, with 9LN/min produced with a radiation intensity of roughly 900 W/m{sup 2}; a minimum of 6 LN/min was produced with a radiation of roughly 600 W/m{sup 2} during the month of December. Based on these results, we can foresee a minimum amount of hydrogen generated of 6 to 9 LN/min in the state of Zacatecas during an entire year, since the months evaluated are those with the least solar radiation. The measurements performed by the Siglo XXI station show that the solar radiation power measured is higher than the national and worldwide means, making Zacatecas a strategic state for the use of this renewable energy. The amounts calculated of hydrogen produced would indicate that it is feasible to establish solar-hydrogen systems in this region in order to obtain this energy using PEM electrolyzers. [Spanish] En este trabajo se presenta el calculo de la cantidad de hidrogeno que se obtendria, empleando un electrolizador de membrana de intercambio de protones tipo, tomando como base las medidas realizadas en la Estacion Solarimetrica del Campus Siglo XXI en la Universidad Autonoma de Zacatecas. El analisis de la radiacion solar se realizo en el periodo de noviembre de 2007 a abril de 2008 correspondiendo a la epoca de menor

  17. Power generation from biomass estimation for projects of the clean development mechanism program; Estimacion de la generacion de energia a partir de biomasa para proyectos del programa de mecanismo de desarrollo limpio

    Energy Technology Data Exchange (ETDEWEB)

    Flores Velazquez, Roberto; Munoz Ledo Carranza, Ramon; Flores Brito, Brenda Berenice; Cano Ruiz, Karla Itzel [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2009-07-01

    In the present work, it is calculated the amount of energy and the reductions of greenhouse gases emissions that may be obtained taking advantage of organic wastes, such as, sugarcane bagasse and urban wastes. The appropriate use of these waster could generate up to 28% of the power requirements reported for the state of Morelos in 2005. Likewise, the Clean Development Mechanism could be employed to negotiate carbon certificates in such as way that the industrialized countries could meet with the goals implemented in the Kyoto Protocol and the state of Morelos could get the financial resource to be in the front technologic line with respect to the utilization of organic waster to generate power and to reduce greenhouse gases emissions. [Spanish] En el presente trabajo se estima la cantidad de energia y reduccion de emisiones de gases de efecto invernadero que podria obtenerse mediante el aprovechamiento de desechos industriales y municipales en el estado de Morelos, Mexico, tales como el bagazo de cana y la basura municipal. El uso adecuado de estos desechos podria generar hasta un 28% de los requerimientos energeticos de Morelos reportados en 2005. Asimismo, a traves del programa de Mecanismo de Desarrollo Limpio se podrian negociar certificados de carbono para que los paises industrializados cumplan las metas estipuladas en el Protocolo de Kyoto, y el estado de Morelos obtenga la inversion necesaria para estar a la vanguardia tecnologica en la utilizacion de desechos organicos para la generacion de energia y la reduccion de gases de efecto invernadero.

  18. Predictions and estimations of colorectal cancer mortality, prevalence and incidence in Aragon, Spain, for the period 1998-2022 Estimaciones y proyecciones de incidencia, prevalencia y mortalidad del cáncer colorrectal en Aragón, España, para el periodo de 1998 a 2022

    Directory of Open Access Journals (Sweden)

    Dyego Leandro Bezerra-de-Souza

    2012-11-01

    Full Text Available Objective: estimate colorectal cancer incidence and prevalence in Aragón, Spain, based on mortality and survival data from the period 1998-2007, and provide projections of incidence, prevalence and mortality until the year 2022. Methods: general and colorectal cancer mortality rates were obtained from the National Statistics Institute and survival data was obtained from the EUROCARE study. Estimations were carried out through the program MIAMOD. The joinpoint program was used to quantify the annual change expected in the projections. Results: in men, an increase in prevalence is expected, from 237.2 (Crude Rate - CR = 303.5 to 237.7 (CR = 412.7 per 100.000 inhabitants/year in 2022. Incidence rates would increase from 48.2 (CR = 61.6 in 2007 to 55.2 (CR = 83.1, and mortality would increase from 22.7 (CR = 29.4 to 26.0 (CR = 39.6 when comparing 2007 and 2022. In women, a reduction in prevalence is expected from 181.5 (CR = 268.3 to 167.9 (CR = 286.2 cases per 100,000 inhabitants/year. Incidence would change from 25.0 (CR = 38.0 in 2007 to 22.7 (CR = 39.2, and for mortality there is also an expected decrease, from 11.3 (CR =18.0 to 10.3 (CR = 18.5. Conclusion: the projections indicate that colorectal cancer in Spain follows an increasing trend in incidence, mortality and prevalence in men, in opposition to corresponding decreasing trends in women. These projections must be considered in order to plan more effective prevention and treatment measures.Objetivo: estimar la incidencia y la prevalencia del cáncer colorrectal en Aragón, España, basándose en datos de mortalidad y supervivencia del periodo de 1998 a 2007, y proporcionar proyecciones de incidencia, prevalencia y mortalidad hasta el año 2022. Métodos: la mortalidad por todas las causas y para el cáncer colorrectal se obtuvo del Instituto Nacional de Estadística y los datos de supervivencia del estudio EUROCARE. Las estimaciones han sido realizadas utilizándose el programa MIAMOD. El

  19. Introduction

    DEFF Research Database (Denmark)

    Kørnøv, Lone; Lund, Henrik; Remmen, Arne

    2004-01-01

    The chapter gives an introduction to the book "Environmental planning and management : tools for a sustainable development".......The chapter gives an introduction to the book "Environmental planning and management : tools for a sustainable development"....

  20. Estimation of the resource for small, mini and micro hydro-energy: Applications in Mexico. First part: Estimation of the Resource (Annexe 8 in 'A vision of year 2030 on the use of the renewable energies in Mexico'); Estimacion del recurso para pequena, mini y micro hidroenergia: Aplicaciones en Mexico. Primera parte: Estimacion del Recurso (Anexo 8 en 'Una vision al 2030 de la utilizacion de las energias renovables en Mexico')

    Energy Technology Data Exchange (ETDEWEB)

    Valdez Ingenieros, S.A. de C.V. [Cuernavaca, Morelos (Mexico)

    2005-08-15

    In this document a discussion is presented on the potential denominated small, mini or micro-hydraulic whereupon counts the country with the intention of coming to its development or operation. The use of hydro-energy in small scale is possible as much as for the auto-industrial supply as for productive activities in rural areas. Comments also made on the uncertainties of its assessment and the way it considers to follow to continue with the works that take to conclude at 100% the assessment of the national potential in the near future, since apparently in Mexico a little more of 2% of such potential has been only developed. One knows that in other countries in the last ten years, an accelerated development of this power source with satisfactory results has been obtained. [Spanish] En este documento se presenta una discusion sobre el potencial denominado pequeno, mini o micro hidraulico con que cuenta el pais con el objeto de proceder a su desarrollo o explotacion. El uso de la hidroenergia en pequena escala es posible tanto para el auto abasto industrial como para actividades productivas en el medio rural. Se comenta tambien sobre las incertidumbres de su determinacion y se plantea el camino a seguir para continuar con los trabajos que lleven a concluir al 100% la determinacion del potencial nacional en el futuro cercano, ya que al parecer en Mexico solo se ha desarrollado un poco mas del 2% de dicho potencial. Se sabe que en otros paises en los ultimos diez anos, se ha logrado un acelerado desarrollo de esta fuente energetica con resultados satisfactorios.

  1. Estimation of the resource for small, mini and micro hydro-energy: Applications in Mexico. First part: Estimation of the Resource (Annexe 8 in 'A vision of year 2030 on the use of the renewable energies in Mexico'); Estimacion del recurso para pequena, mini y micro hidroenergia: Aplicaciones en Mexico. Primera parte: Estimacion del Recurso (Anexo 8 en 'Una vision al 2030 de la utilizacion de las energias renovables en Mexico')

    Energy Technology Data Exchange (ETDEWEB)

    Valdez Ingenieros, S.A. de C.V. [Cuernavaca, Morelos (Mexico)

    2005-08-15

    In this document a discussion is presented on the potential denominated small, mini or micro-hydraulic whereupon counts the country with the intention of coming to its development or operation. The use of hydro-energy in small scale is possible as much as for the auto-industrial supply as for productive activities in rural areas. Comments also made on the uncertainties of its assessment and the way it considers to follow to continue with the works that take to conclude at 100% the assessment of the national potential in the near future, since apparently in Mexico a little more of 2% of such potential has been only developed. One knows that in other countries in the last ten years, an accelerated development of this power source with satisfactory results has been obtained. [Spanish] En este documento se presenta una discusion sobre el potencial denominado pequeno, mini o micro hidraulico con que cuenta el pais con el objeto de proceder a su desarrollo o explotacion. El uso de la hidroenergia en pequena escala es posible tanto para el auto abasto industrial como para actividades productivas en el medio rural. Se comenta tambien sobre las incertidumbres de su determinacion y se plantea el camino a seguir para continuar con los trabajos que lleven a concluir al 100% la determinacion del potencial nacional en el futuro cercano, ya que al parecer en Mexico solo se ha desarrollado un poco mas del 2% de dicho potencial. Se sabe que en otros paises en los ultimos diez anos, se ha logrado un acelerado desarrollo de esta fuente energetica con resultados satisfactorios.

  2. Introduction

    DEFF Research Database (Denmark)

    Høgfeldt Hansen, Leif

    2016-01-01

    This introduction to South Korean architecture gives an overall view of the architecture done in the country in historic times as well as a general introduction to the culture of the country.......This introduction to South Korean architecture gives an overall view of the architecture done in the country in historic times as well as a general introduction to the culture of the country....

  3. Introduction

    DEFF Research Database (Denmark)

    Jensen, Rasmus Thybo; Moran, Dermot

    2012-01-01

    An introduction to a special issue of Phenomenology and the Cognitive Sciences dedicated to empathy and the direct perception approach to other minds......An introduction to a special issue of Phenomenology and the Cognitive Sciences dedicated to empathy and the direct perception approach to other minds...

  4. Introduction

    DEFF Research Database (Denmark)

    Søbjerg, Lene Mosegaard

    2016-01-01

    Introduction to anthology which provides the theoretical basis of an Erasmus+ project involving marginalised young people, practitioners, students and academics in co-creating a teaching module for the social professions.......Introduction to anthology which provides the theoretical basis of an Erasmus+ project involving marginalised young people, practitioners, students and academics in co-creating a teaching module for the social professions....

  5. Introduction

    International Nuclear Information System (INIS)

    Kadirov, A.Kh.; Khaydarov, K.Kh.; Giyosov, A.Sh.

    2000-01-01

    In the introduction authors describe book in general and in particular describe the ways and methods of direct synthesis on the base of different derivatives of cholanic acids and receiving of line of corresponding ethers which have practical properties

  6. Introduction

    DEFF Research Database (Denmark)

    Henkel, Anna; Åkerstrøm Andersen, Niels

    2015-01-01

    An introduction is presented in which the authors discuss various reports within the issue on topics including the concept of responsibility, the discourse about responsibility, and the attribution of responsibility in an interdisciplinary context.......An introduction is presented in which the authors discuss various reports within the issue on topics including the concept of responsibility, the discourse about responsibility, and the attribution of responsibility in an interdisciplinary context....

  7. Introduction

    DEFF Research Database (Denmark)

    Ashbee, Edward; Dumbrell, John

    2017-01-01

    The introduction sets a framework for subsequent chapters by considering theories of change and the extent to which there was consequential change during the Obama years. It draws upon earlier scholarship to suggest that although there certainly was no “transformation” (when new interests secure...... Congress. Nonetheless, although recent literature within historical institutionalism has stressed the importance of incrementalism, it is vulnerable to rollback. Against this background, the introduction sets questions about the character of change that are addressed in the case studies included...

  8. Introduction

    DEFF Research Database (Denmark)

    Gjerdrum Pedersen, Esben Rahbek; Thusgaard Pedersen, Janni

    2013-01-01

    An introduction is presented in which the editors discuss various reports within the issue on topics including the shared value concept in the education and business, the role of corporate foundations in establishing cross-sector partnerships, and the mechanisms of governance in the cross...

  9. Introduction

    DEFF Research Database (Denmark)

    Pop, Paul; Alistar, Mirela; Stuart, Elena

    2015-01-01

    This chapter presents an introduction to the microfluidics field and microfluidic biochips. We discuss the main fluid propulsion principles used by modern microfluidic platforms, with a focus on “digital” microfluidic biochips, which are the topic of this book. Digital microfluidic biochips...

  10. Introduction

    DEFF Research Database (Denmark)

    Barwell, Richard; Clarkson, Philip; Halai, Anjum

    2016-01-01

    This chapter provides the introduction to this ICMI Study 21 volume. It includes: a discussion of the place of this study and its topic within ICME; a discussion of what is meant by the study title; and a brief historical account of research on this topic in mathematics education. The chapter also...

  11. Introduction

    DEFF Research Database (Denmark)

    Schmidt, Johannes Dragsbæk; Berg, Torsten Rødel

    2012-01-01

    The chapter includes a discussion about the play by Henrik Ibsen from 1879, A Doll's House, how it still proves to be relevant today to gender relations not only in Denmark but in Nepal as well. The introduction explains how Ibsen's play inspired two theater directors from Denmark and Nepal...

  12. Introduction

    International Nuclear Information System (INIS)

    Raeder, J.

    1975-01-01

    The introduction to this monography gives a brief survey of the history of the MHD generator, outlines the fundamental questioning of the research concerned and then deals with the combustion gas MHD generator research programme of the working society MPI for plasma physics (IPP)/Maschinenfabrik Augsburg-Nuernberg AG (M.A.N.). (GG/LH) [de

  13. Introduction

    NARCIS (Netherlands)

    Dieci, R.; He, X.-Z.; Hommes, C.; Dieci, R.; He, X.-Z.; Hommes, C.

    2014-01-01

    This introduction summarises the main contributions of 18 chapters in this book, in addition to two articles (Part I) reflecting Carl's view on a broad range of research-related issues originally published in Italian. The contributed chapters cover the latest developments in Nonlinear Economic

  14. Introduction

    NARCIS (Netherlands)

    Doreian, Patrick; Stokman, Frans N.

    2001-01-01

    Introduction to: The proceedings of a conference that was held on the analysis of repeated cross sections at the University of Nijmegen on June 15±16, 2000. This two-days meeting was attended by 75 participants from seven different countries (AUS, B, F, GER, NL, USA, UK) and from a wide array of

  15. Introduction

    NARCIS (Netherlands)

    Salverda, W.; Nolan, B.; Checchi, D.; Marx, I.; McKnight, A.; Tóth, I.G.; van de Werfhorst, H.; Salverda, W.; Nolan, B.; Checchi, D.; Marx, I.; McKnight, A.; Tóth, I.G.; van de Werfhorst, H.

    2014-01-01

    This chapter provides the introduction to a collection of 11 comparative chapters and a concluding chapter which, based on 30 country studies (25 European, USA, Canada, Australia, Japan, Korea; reported in the companion volume Nolan et al. 2013), look at the evolution of inequalities, their social

  16. Introduction

    DEFF Research Database (Denmark)

    Petersen, Nils Holger; Sandbeck, Lars; Solten, Therese Bering

    2013-01-01

    Introduction to the Special Issue of Literature and Theology publishing articles based on selected papers from the international conference of the International Society for Religion, Literature and Culture (ISRLC) conference held at the Theological Faculty of the University of Copenhagen 19...

  17. Introduction

    DEFF Research Database (Denmark)

    Bandak, Andreas; Janeja, Manpreet Kaur

    2018-01-01

    This introduction foregrounds waiting as a central analytical category to make way for ethnographic attention to uncertain interplays between doubting and hoping. Using a range of focused ethnographies which explore the centrality of waiting in social life, it offers a critical lens...

  18. Introduction

    DEFF Research Database (Denmark)

    Schmidt, Johannes Dragsbæk; Rasiah, Rajah

    2010-01-01

    This is a very interesting book. It is topical and is one of the few volumes that attempts to treat Southeast Asia as an integrated whole. The editors are methodologically ambitious, and they skillfully integrate a very large amount of diverse material in their introduction. I imagine that the bo...... working on the economics and development of Southeast Asia....

  19. Introduction

    International Nuclear Information System (INIS)

    Jacquinot, J.

    1997-01-01

    An introduction to the symposium on nuclear fusion and the CEA researches on magnetic confinement, is presented, with a review of the future energy capacities that fusion could deliver, the technological developments on superconductors, robots, etc. that will assist fusion development, and the european and international cooperation programs on the subject

  20. Introduction

    International Nuclear Information System (INIS)

    Van Walle, E.

    2007-01-01

    The introduction to the annual report 2006 of the Belgian Nuclear Research Centre SCK-CEN highlights the reorganisation of SCK-CEN that became effective in 2006. An overview is given of the principal activities of Institute for Nuclear Materials Science, the Institute for Advanced Nuclear Systems, the Institute for Environment, Health and Safety and the Institute for Communication, Services and Administration

  1. Introduction

    DEFF Research Database (Denmark)

    Seeberg, Peter

    2015-01-01

    states, the Introduction emphasizes the continued relevance of focusing on a repoliticized MENA reality. The Middle East is still on the move away from the established image of unshakeable authoritarianism attributed to the region, which made the upgrading authoritarianism paradigm seem forever relevant......The Introduction briefly presents the ideas behind this collection of articles, namely to analyze popular mobilization and the role of civil society, political parties, and regional organizations in relation to the developments in the Middle East and North Africa (MENA) over the last years......, and to discuss theoretical approaches and paradigms of relevance for the analysis of these new regional dynamics. The MENA region experienced, in connection with and following the Arab uprisings, a hitherto unseen popular mobilization. Despite the recent highly problematic situation in several Middle Eastern...

  2. Introduction

    DEFF Research Database (Denmark)

    Schubart, Rikke

    2017-01-01

    This special issue of the journal Refractory explores identity in the Penny Dreadful.The introduction introduces the show, themes and the six articles. In Season Two of television horror-drama, Penny Dreadful (Showtime/Sky, 2014-16), Ethan Chandler (Josh Hartnett), American sharpshooter and werew......This special issue of the journal Refractory explores identity in the Penny Dreadful.The introduction introduces the show, themes and the six articles. In Season Two of television horror-drama, Penny Dreadful (Showtime/Sky, 2014-16), Ethan Chandler (Josh Hartnett), American sharpshooter...... and werewolf, asks Vanessa Ives (Eva Green), a British heiress with supernatural powers and a troubled past, what happens when the monsters inside of them are released? She says: “We’re most who we are. Unrestrained. Ourselves.” Summing up a central concern of the series, she confirms the view of its creator...

  3. Introduction

    OpenAIRE

    Brake, Laurel; Mussell, James

    2013-01-01

    When W. T. Stead died on the Titanic he was the most famous Englishman on board. A mass of contradictions and a crucial figure in the history of the British press, Stead was a towering presence in the cultural life of late-Victorian and Edwardian society. In this introduction, we consider Stead as a ‘mass of contradictions’ and offer a few ways in which his prodigious output and activity might be understood.

  4. Introduction

    Directory of Open Access Journals (Sweden)

    Laurel Brake

    2013-04-01

    mso-fareast-language:JA;} When W. T. Stead died on the 'Titanic' he was the most famous Englishman on board. A mass of contradictions and a crucial figure in the history of the British press, Stead was a towering presence in the cultural life of late-Victorian and Edwardian society. In this introduction, we consider Stead as a ‘mass of contradictions’ and offer a few ways in which his prodigious output and activity might be understood.

  5. Introduction

    DEFF Research Database (Denmark)

    Høst, Jeppe Engset

    2015-01-01

    This chapter introduces the notion and theme of market-based fisheries management. The introduction of market mechanisms to distribute and manage fishing quota has internationally occurred since the 1980s but is increasingly on the political agenda. As privatization and transferability are promoted...... internationally, and by big players, it becomes even more crucial to understand its social and environmental implications. This chapter looks at the broader lines in the fisheries research and discusses the diverging views on market-based fisheries management. On one side market mechanisms are promoted...... for efficiency and fleet adaptation, and on the other, quota markets are accused of causing concentration and disturbing social relations....

  6. Introduction

    International Nuclear Information System (INIS)

    Davies, L.M.; Ianko, L.

    1998-01-01

    As a result of the popularity of the Agencies report 'Neutron Irradiation Embrittlement of Reactor Pressure Vessel Steels' of 1975, it was decided that another report on this broad subject would be of use. In the introduction the historic context is established, spanning a bow from the first sustained fission reactor in 1942 to contemporary developments. The subjects 'Irradiation Effects on Mechanical Properties', 'Neutron Fluence', 'Irradiation Effect Trends', 'Empirical Modelling of Irradiation Effects' and 'Mechanical Modelling' are addressed. There are also some remarks about the current state of the art, the migration of irradiation effects and about international programmes

  7. Introduction

    DEFF Research Database (Denmark)

    Peder Pedersen, Claus; Dehs, Jørgen

    2013-01-01

    Introduction to When Architects and Designers Write / Draw / Build / ? This anthology highlights the potentials and challenges for research in architecture and design. The included essays are based on papers given at a symposium held at the Aarhus School of Architecture in 2011 and contain a number...... of topical positions ranging from the activist and academic to practice-based and artistically-based research by international and Danish researchers. The anthology is aimed at architects and designers, as well as others with an interest in the discussion of the concept of research in the fields...

  8. Introduction

    DEFF Research Database (Denmark)

    de Goede, Marieke; Leander, Anna; Sullivan, Gavin

    2016-01-01

    This articles introduces the special issue on ‘The Politics of the List.’ We observe that lists proliferate as a technique of governance across multiple domains, including health, security, and commerce. We argue that it is important to take seriously the form and technique of the list itself...... and engage the knowledge practices, governance effects and ways of ordering the world that the list format enables. In other words, the special issue seeks to ‘remain in the register of the list,’ to unpack its technological arrangements and juridical power. This introduction sets out the key themes...

  9. Introduction

    International Nuclear Information System (INIS)

    2000-01-01

    In the Introduction a brief review on application of high-current electron beams (HEB) and powerful pulse ion beams (PPB) is given. It is noted that at present the following principal trends on HEB and PPB application in technologies are formed: production of super-dense plasma for controlled thermonuclear synthesis; implantation and annealing of semiconductors; modification of metals and alloys properties: strength, tribo-technical and anticorrosion ones; synthesis of new composite materials, including metastable phases and compounds; manufacture of thin films and coverings with preset structure and properties by means of ablation plasma deposition; cleaning, polishing and glancing of surfaces; synthesis of ultra-disperse and nano-sized powders; destruction and cutting of solid materials

  10. Introduction

    Science.gov (United States)

    Kirby, Evan N.

    2018-06-01

    Dwarf galaxies are excellent laboratories of chemical evolution. Many dwarf galaxies have simple star formation histories with very low average star formation rates. These conditions simplify models of chemical evolution and facilitate the identification of sites of nucleosynthesis. Dwarf galaxies also host extremely metal-poor stars, which sample the ejecta of the first generations of supernovae in the universe. This meeting-in-a-meeting, "Stellar Abundances in Dwarf Galasxies," will recognize the importance of dwarf galaxies in learning about the creation and evolution of the elements. Topics include: * the most metal-poor stars * the connection between dwarf galaxies and the Milky Way halo * dwarf galaxies as the paragons of r-process nucleosynthesis * modern techniques in stellar abundance measurements * recent advances in chemical evolution modelingI will give a very brief introduction to set the stage for the meeting.

  11. Introduction

    International Nuclear Information System (INIS)

    2002-01-01

    In the Introduction a common data about the monograph are presented. It is noted that results of α-particles elastic and inelastic scattering angular distribution with energies 40.0 and 50.1 MeV on 90,94 Zr carried out on the Kazakhstan isochronous cyclotron U-150M. A new data on total reaction cross sections at α-particles energies 96(1) MeV and 3 He ions 95(1) MeV on 90 Zr isotope, obtained on the Kiev isochronous cyclotron U-240 are given. Within framework of unified approach the experimental data analysis for α-particles quasi-elastic scattering with energies 35.4, 40.0 and 50.1, 65.0 MeV on odd zirconium isotopes as well as their reaction total cross sections is carried out. With use of α-particles scattering at low and middle energies the excited states transitions isospin character for odd tin isotopes is studied in detail with application of up-to date analysis methods. The monograph consists of introduction, four chapters and Conclussion. The chapters are as follows: (1) Experimental measurement methods of differential and total reaction cross sections with complicated particles at low and middle energies; (2) Macroscopic and semi-microscopic optical-potential approaches; (3) Peculiarities of experimental angular distribution of alpha particles at energies up to 12.5 MeV/nucleon, total reaction cross sections and results their optical potential analysis; (4) Structure characteristics of odd-odd nuclei and their comparative analysis

  12. Estimation of the renewable power resource (Chapter 2 in 'A vision of year 2030 on the use of the renewable energies in Mexico'); Estimacion del recurso energetico renovable (Capitulo 2 en 'Una vision al 2030 de la utilizacion de las energias renovables en Mexico')

    Energy Technology Data Exchange (ETDEWEB)

    Mulas del Pozo, Pablo [Universidad Autonoma Metropolitana, Mexico, D.F. (Mexico)

    2005-08-15

    Most of the information in this chapter is obtained from 1, 2, 3, 6, 8 and 9 annexes. It is worthwhile to clarify that in most of the cases they are estimations of the available resources, such as: trash, geothermal, solar energy, wind energy, biomass and mini and micro-hydro-energy. In several cases punctual measurements have been made, which do not represent a generic value of a national reserve. [Spanish] La mayor parte de la informacion en este capitulo es obtenida de los anexos 1, 2, 3, 6, 8 y 9. Cabe aclarar que en la mayoria de los casos son estimaciones de los recursos disponibles, tales como: la basura, la geotermia, la energia solar, la energia eolica, la biomasa y, la mini y la micro-hidroenergia. En varios casos se han realizado mediciones puntuales, las cuales no representan un valor generico de una reserva nacional.

  13. Introduction

    International Nuclear Information System (INIS)

    Toropila, M.

    2006-01-01

    In this introduction to The Third Radiobiological Conference author give a short retrospective review of reactor accidents (26 th April 1986, Chernobyl NPP, 1979 in Three Mile Island). In former Czechoslovakia an attention has been paid to the questions of the effects of radiation on organism from the 1950's. After discharge of Commonwealth the Radiobiological Association. that facilitated interchange of the results of research work among various national and foreign institutions. was also abolished. After establishment of the autonomous Slovak Republic the University of Veterinary Medicine (UVM) in Kosice in collaboration with Pavol Jozef Safarik University in Kosice linked to tradition of radiobiology and organized the the First Radiobiological Conference in Slovakia. At this conference 37 lectures of home and 9 of Czech authors were presented. At the end of conference the agreement was made to held this conference every second year. The 2 nd Radiobiological Conference was held in 2004 at the occasion of the 55 st anniversary of the UVM establishment in Kosice. The 3 rd Conference held on 25 tb May 2006 in UVM in Kosice was inscribed to the 20 th anniversary of Chernobyl disaster. Selected articles dealing with this problem create contents of Supplement inscribed to the 50 th anniversary of the scientific journal Folia Veterinaria

  14. Introduction

    Directory of Open Access Journals (Sweden)

    Jonathan Carson

    2011-08-01

    Full Text Available

    Abstract: Written as Carson & Miller, collaborative artists who explore narrative and the places where narrative intersects with material culture and everyday experience, this introduction presents the stakes of the larger project that entails the exhibition The Story of Things (2009, the conference The Story of Things: reading narrative in the visual (2010 and the double issue of Image (& Narrative. It mainly focuses on the interdisciplinary approaches to the relationship between object and storytelling.

     

    Résumé: Portant la double signature de Carson & Miller, un duo d'artistes avec un intérêt particulier pour la narration et les rapports entre les interaction entre culture ordinaire et  manières de raconter, cette introduction présente les enjeux du projet plus large qui regroupe une exposition

  15. Introduction

    International Nuclear Information System (INIS)

    Zapata, F.; Garcia-Agudo, E.; Ritchie, J.C.; Appleby, P.G.

    2002-01-01

    Soil erosion and associated sedimentation are natural processes caused by water, wind and ice. Several of man's activities such as deforestation, overgrazing, changes in land use, and non-sustainable farming practices tend to accelerate soil erosion. Soil erosion and sedimentation cause not only on-site degradation of a non-renewable natural resource, but also off-site problems such as downstream sediment deposition in fields, floodplains and water streams. These problems and concern over the degradation of the landscape by erosion, and their impacts on soil fertility and crop productivity in agricultural land, water pollution, and sedimentation in lakes, reservoirs, and floodplains are well documented. Global estimates of economic damage from soil erosion and sedimentation have also been made. Recent focus on sustainability issues has resulted in increased attention on soil-degradation problems, in particular soil erosion and sedimentation. In view of increasing water scarcity and limited land resources to feed an ever-growing world population, there is an urgent need to obtain reliable quantitative data on the extent and rates of soil erosion worldwide to provide a more comprehensive assessment of the problem and to underpin the selection of effective soil-conservation technologies and sedimentation remediation strategies, including assessment of their economic and environmental impacts. This chapter describes the use of fallout 137 Cs as a tracer for measuring soil erosion and sedimentation, and the potential use of other radionuclides such as 210 Pb, and 7 Be for these studies. It provides an overview of the 137 Cs technique describing key assumptions and requirements, and advantages and limitations of the technique. Also, applications, recent developments, and future trends of the technique are covered. The chapter is completed with an introduction to the handbook and a list of selected references

  16. Introduction

    Directory of Open Access Journals (Sweden)

    Anuparna Mukherjee

    2017-04-01

    Full Text Available The city as a mosaic of anarchic diversity and messy contradictions has always been a rich source of inspiration for practitioners of creative arts. Writers, painters, planners, photographers, performers have deemed the city as the loci of their desire, conflict, passion and memory to chart the minutes of quotidian life in various intricate forms and configurations. “The city came into being when a surplus of food allowed a diversity of tasks”, Lehan asserts in his introduction to The City in Literature. “Diversity is a key to urban beginnings and continuities, and diversity is also the snake in the urban garden, challenging systems of order and encouraging disorder and chaos” (8. As an eclectic site of cultural friction and contamination that simultaneously oscillates between polarities of belonging and non-belonging, order and chaos, the city unlocks myriad windows to the chroniclers of urban realities. The cities in their perpetual making and dismantling, bear an impression of what Amit Chaudhuri terms in a recent talk as the “unfinished-ness” in the context of modern cities[1]. The “unfinished” is a slippery term as Chaudhuri explains, while it may suggest the Modernist artists’ proclivity towards dereliction, ruin or fragmentation in metropolitan landscape, it also speaks of the “half-made”[2], the backward, or the liminal spaces within an urban conurbation. However, this “unfinished-ness” or the fact that “cities are not finished products” as Chaudhuri posits, is also indicative of their “radical openness” and their inexhaustible potentials for reinventing themselves.

  17. Introduction

    Directory of Open Access Journals (Sweden)

    Donatella Abbate Badin

    2011-08-01

    Full Text Available The introduction to the monographic section Italy-Ireland: Cultural Inter-Relations, gives a brief account of how this part of the journal tries to fill a gap in transcultural studies by investigating the hitherto relatively underexplored relationship of Ireland with Italy. The editors argue that the topic deserves special attention because throughout the centuries, owing to a shared religion and Ireland’s colonial and postcolonial status, a special relationship was established. Without neglecting the many contributions published on this topic over the past thirty years, the papers collected in this first issue of SIJIS offer an overall view of the relations between Italy and Ireland from the Middle Ages to the present day demonstrating this special relationship. The opening essay, drawing an ample and interdisciplinary panorama of the representations of Ireland in Italy over the centuries, and  the concluding one, introducing new issues and suggestions for further investigations, frame seven papers organized thematically in subsections.  The translation studies section highlights some specific problems presented to the translator because of the Irish nature of the translated texts. Exploration of the links between some major figures and Italy opens up new perspectives even regarding much studied figures such as Joyce while  the time-honoured comparative method of studying influences yields ground-breaking insights as in the study of links between Commedia dell’Arte and Clarke or Mahon and Pasolini. Representations of Italy and  the presence of Italian settings and characters acquire  a specific Irish edge in the writings of Synge, Lady Morgan and Edward Maturin especially when both countries were still in search  of their identities.

  18. Introduction

    International Nuclear Information System (INIS)

    Ainul Hayati Daud; Hazmimi Kasim

    2010-01-01

    Since the Atoms for Peace program in 1950s, peaceful applications of nuclear technology has been at the forefront of the development of many countries. In Malaysia, the development of nuclear technology began in earnest with the setting-up of Malaysian Nuclear Agency (Nuclear Malaysia) in 1972, then known as CRANE. More than thirty years later, today, the technology has gained footing and made impact to the development of the country. Her role in regional and international scenes in nuclear-related matters and nuclear technology was noticed and being given due attention. It is time to take stock of this development and assess its impact upon which further developments can be planned and strategized. That was the genesis of this study. This chapter presents a review of the status and development of nuclear technology globally and in Malaysia to provide a background for the report and the study. This is followed by an introduction to the study: its objectives, scope, methods of research, total population, sampling frame, selection procedures, target groups and data analysis. The chapter concludes with a guide to the organization of this report. The study was conducted with the aim of evaluating the impact and contribution of nuclear technology to socio-economic development of the country. It is also expected to identify issues and challenges faced by users of this technology. Even though the applications of nuclear technology encompass diverse human endeavors, this study focuses only in industrial, medical and agriculture sectors. The applications of nuclear technology in both public agencies and private companies in those sectors are considered. This is the first time such a study is being undertaken in Malaysia, and as a starting point, the three year period spanning 2006-2008 are taken as the time frame for discerning trends of nuclear technology development in the country. This study was also in an indirect sense motivated by similar studies conducted in the USA

  19. Introduction

    Science.gov (United States)

    Cohen, E. G. D.

    deduced for irreversible processes (C. Jarzynski). The survey of non-equilibrium steady states in statistical mechanics of classical and quantum systems employs heat bath models and the random matrix theory input. The quantum heat bath analysis and derivation of fluctuation-dissipation theorems is performed by means of the influence functional technique adopted to solve quantum master equations (D. Kusnezov). Chapter II deals with an issue of relaxation and its dynamical theory in both classical and quantum contexts. Pollicott-Ruelle resonance background for the exponential decay scenario is discussed for irreversible processes of diffusion in the Lorentz gas and multibaker models (P. Gaspard). The Pollicott-Ruelle theory reappears as a major inspiration in the survey of the behaviour of ensembles of chaotic systems, with a focus on model systems for which no rigorous results concerning the exponential decay of correlations in time is available (S. Fishman). The observation, that non-equilibrium transport processes in simple classical chaotic systems can be described in terms of fractal structures developing in the system phase space, links their formation and properties with the entropy production in the course of diffusion processes displaying a low dimensional deterministic (chaotic) origin (J. R. Dorfman). Chapter III offers an introduction to the theory of dynamical semigroups. Asymptotic properties of Markov operators and Markov semigroups acting in the set of probability densities (statistical ensemble notion is implicit) are analyzed. Ergodicity, mixing, strong (complete) mixing and sweeping are discussed in the familiar setting of "noise, chaos and fractals" (R. Rudnicki). The next step comprises a passage to quantum dynamical semigroups and completely positive dynamical maps, with an ultimate goal to introduce a consistent framework for the analysis of irreversible phenomena in open quantum systems, where dissipation and decoherence are crucial concepts (R

  20. Heat losses estimation associated with the physical state of the thermal insulation of pipes vaporductos network in Cerro Prieto geothermal field; Estimacion de perdidas de calor asociadas al estado fisico del aislamiento termico de las tuberias de la red de vaporductos del campo geotermico Cerro Prieto

    Energy Technology Data Exchange (ETDEWEB)

    Ovando Castelar, Rosember; Martinez Estrella, Juan Ignacio; Garcia Gutierrez, Alfonso [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)]. E-mail: rovando@iie.org.mx; jime@iie.org.mx; aggarcia@iie.org.mx; Canchola Felix, Ismael; Miranda Herrera, Carlos; Jacobo Galvan, Paul [Campo Geotermico de Cerro Prieto, Comision Federal de Electricidad, Mexicali, B.C. (Mexico)

    2010-11-15

    The Cerro Prieto Geothermal Field (CPGF) steam transportation network is constituted by 140 km of pipes with diameters ranging from 8 to 48 inches, which transport the steam of 165 producing wells to 13 power plants which have a total installed capacity of 720 MWe. Originally, the pipes are thermally insulated with a mineral wool or fiber glass layer and an external aluminum or iron cover. Due to the insulation material has been exposed to weather conditions during the field operation it shows nowadays different grades of wear-out, or even it is lacking in some parts of the network, causing higher heat losses from the pipes to the environment. In this work, the magnitude of the heat losses related with the present condition of the thermal insulation throughout the pipeline network is assessed. This involved determining the longitude and diameter, as well as the insulation condition of each single pipeline section, and the calculation of the heat transfer coefficients for the different thermal insulation conditions defined for this study. [Spanish] La red de transporte de vapor del campo geotermico Cerro Prieto (CGCP) esta constituida por aproximadamente 140 km de tuberias de 8 a 48 pulgadas de diametro, las cuales conducen el vapor producido por 165 pozos hacia 13 plantas generadoras, cuya capacidad instalada es de 720 MWe. Originalmente, estas tuberias son aisladas termicamente con una capa de 2 pulgadas de material aislante a base de lana mineral o fibra de vidrio, y una proteccion exterior de aluminio o hierro. Debido principalmente al impacto de las condiciones meteorologicas durante el tiempo de operacion del campo, en algunas porciones de la red el aislante presenta actualmente distintos grados de deterioro, o incluso se encuentra ausente, lo cual se traduce en una mayor perdida de calor desde las tuberias hacia el medio ambiente. En el presente trabajo se evalua la magnitud de las perdidas de calor asociadas al estado fisico del aislamiento termico de las

  1. 'El Ministerio del Tiempo’, tha Introduction of New Concepts in the Spanish TV Series

    Directory of Open Access Journals (Sweden)

    Víctor Javier Martínez Román

    2016-05-01

    Full Text Available El Ministerio del Tiempo (TVE, 2015- has brought freshness to the Spanish television fiction introducing successfully such a stranger concept to the public as time travel. It is a bold proposal, because Spanish TV series rarely have innovative topics. They are usually framed within mystery, adventure, comedy and, in the last years, historic series. This may allow Fantasy and Science Fiction genre –settled in other countries with series like Black Mirror (Channel 4, 2011- or Battlestar Galactica (SyFy, 2004-2009– to become as important as other genres. The main objective is to know the reasons why El Ministerio del Tiempo has succeeded with such an innovative proposal. To do so, the keys of other successful series have been analyzed with the objective of knowing what audience likes. In this case, given their variety of topics, filming and target, Cuéntame cómo pasó  (TVE, 2001-, Águila Roja (TVE, 2009- y La que se Avecina (Telecinco, 2007- have been selected. Subsequently, El Ministerio del Tiempo has been analyzed and compared to them. Data show El Ministerio del Tiempo key is his transversatility of topics, because his main distinctive point, time travel, joins the best features of each genre. Taking from the mystery, his capacity of ask questions; from the adventure, his dynamism; the use of the comedy as a relief point in the plot; and from the historic series his empathy with the audience.

  2. Estimaciones de funciones de Engel para electricidad residencial

    OpenAIRE

    Kozak, Eduardo

    1991-01-01

    El trabajo analiza los determinantes microeconómicos del consumo de electricidad por parte de las familias. En base a la información disponible de una reciente encuesta de presupuestos familiares, se estima la correspondiente curva de Engel. Se investiga el efecto de cambio en el nivel de ingresos y de las características socioeconómicas de los hogares sobre el consumo familiar. Se estima, asimismo, una función consumo-ingreso utilizada luego como variable instrumental para obtener los paráme...

  3. Estimation of the resource and technological prospective of geothermal energy in Mexico (Annexe 3 in 'A vision of year 2030 on the use of the renewable energies in Mexico'); Estimacion del recurso y prospectiva tecnologica de la geotermia en Mexico (Anexo 3 en 'Una vision al 2030 de la utilizacion de las energias renovables en Mexico')

    Energy Technology Data Exchange (ETDEWEB)

    Iglesias R, Eduardo; Arellano G, Victor; Torres R, Rodolfo Joaquin [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2005-08-15

    Due to its individual geologic-structural characteristics, Mexico counts on abundant geothermal resources. At the moment we count on a database that includes 2,332 geothermal manifestations distributed in 27 of the 32 Mexican states, the geothermal resources are classified as high temperature and intermediate or low temperature resources. Those of high temperature can be used for the generation of electrical energy. Those of intermediate to low temperature are more appropriate for direct applications of the geothermal heat. As of today, in Mexico exist four geothermal fields of high temperature that are being exploded for the electrical generation. [Spanish] Debido a sus particulares caracteristicas geologico-estructurales, Mexico cuenta con abundantes recursos geotermicos. Actualmente contamos con una base de datos que incluye 2,332 manifestaciones geotermicas distribuidas en 27 de los 32 estados mexicanos, los recursos geotermicos se clasifican en de alta temperatura y recursos de temperatura intermedia a baja. Los de alta temperatura pueden utilizarse para la generacion de energia electrica. Los de temperatura intermedia a baja son mas apropiados para aplicaciones directas del calor geotermico. Actualmente en Mexico existen cuatro campos geotermicos de alta temperatura que estan siendo explotados para la generacion electrica.

  4. Aprendizajes del Accidente de San Juan Ixhuatepec-México Learning from the Accident in San Juan Ixhuatepec-Mexico

    OpenAIRE

    Antioco López-Molina; Richart Vázquez-Román; Christian Díaz-Ovalle

    2012-01-01

    El índice Dow de fuego y explosión y la metodología del análisis cuantitativo del riesgo son aplicados para analizar uno de los accidentes más desafortunados en la historia mexicana: la explosión de tanques de almacenamiento de gas en la planta de San Juan Ixhuatepec en México. Estimaciones adicionales de la sobrepresión y radiación térmica producida durante el siniestro son llevadas a cabo para explicar el efecto dominó producido como consecuencia del incidente. Estas estimaciones dan eviden...

  5. Estimating the burden of smoking: premature mortality, morbidity, and costs Estimaciones de la carga debido al consumo de tabaco: mortalidad, morbilidad prematura, y costo

    Directory of Open Access Journals (Sweden)

    Jonathan M Samet

    2010-01-01

    Full Text Available Estimation of the burden of disease attributable to smoking has now become standard in documenting the impact of the tobacco epidemic and in motivating tobacco control. This paper addresses the methods used to estimate the attributable burden of mortality and the related estimation of morbidity and economic costs. Estimates of attributable mortality and morbidity for the Americas range widely, reflecting the maturity of the tobacco epidemic. The estimates are highest for the United States, and lower for Mexico and other countries of the Americas.La medida del impacto de la epidemia de tabaquismo y la promoción del control del tabaco ha sido el estándar para estimar la carga total de enfermedades atribuible al consumo de tabaco. Este artículo estudia los métodos usados para estimar la mortalidad atribuible al consumo de tabaco, así como su morbilidad y los costos económicos. La mortalidad y morbilidad atribuible para la población de los Estados Unidos varía ampliamente, lo que refleja la madurez de la epidemia de tabaquismo. Las estimaciones para los Estados Unidos son altas, y más bajas para México y otros países de América.

  6. Reducing uncertainty and bias in acoustic biomass estimations of southern blue whiting (Micromesistius australis in the southeastern Pacific: transducer motion effects upon acoustic attenuation Reduciendo el sesgo e incertidumbre de las estimaciones hidroacústicas de biomasa de merluza de tres aletas (Micromesistius australis en el Pacífico suroriental: efectos del movimiento del transductor sobre la atenuación acústica

    Directory of Open Access Journals (Sweden)

    Alvaro Saavedra

    2012-09-01

    Full Text Available We evaluated the loss of sensitivity due to the motion experienced by a hull-mounted transducer and its effects upon the estimated biomass of southern blue whiting (Micromesistius australis in an acoustic survey conducted in the southeastern Pacific, off the Chilean coast, during the austral winter of 2009. Vessel motion data (pitch and roll were registered in situ using a digital clinometer and used to correct the nautical area scattering coefficients (NASC in elementary sampling units of 926 m distance by 10 m depth. These NASC correction factors (NASCcp were calculated using Dunford's algorithm for circular transducers. We found high variability in NASCcp, which averaged 12%, and ranged between 0 and 50%. NASCcp variability was explained significantly by the mean depth of the integrated stratum (33%, the weather condition, as measured by Beaufort's scale (5%, and the vessel course relative to wind direction (2%. The empirical model we used to explain NASC Cp variability may be suitable for correcting bias due to transducer motion in other, past and future, fisheries acoustic surveys targeting mid-water species under rough weather conditions.Se evaluó la pérdida de sensibilidad producida por el movimiento de un transductor montado en el casco y sus efectos sobre la abundancia y biomasa estimada de merluza de tres aletas (Micromesistius australis en un estudio acústico realizado en el Pacífico suroriental, frente a la costa de Chile, durante el invierno austral de 2009. Los datos de movimiento del barco (cabeceo y balanceo fueron registrados in situ utilizando un clinómetro digital y luego utilizados para estimar la pérdida teórica de sensibilidad del transductor y, finalmente, traducir esta pérdida en factores de corrección del coeficiente de dispersión por área náutica (NASC calculados para intervalos básicos de muestreo de 926 m de distancia por 10 m de profundidad. Los factores de corrección del NASC (NASC Cp fueron calculados

  7. El gasto en la atención y la prevención del VIH/SIDA en México: tendencias y estimaciones 1997-2002 HIV/AIDS care and prevention expenditures in Mexico: trends and estimations 1997-2002

    Directory of Open Access Journals (Sweden)

    Carlos Magis-Rodríguez

    2005-10-01

    Full Text Available OBJETIVO: Presentar un análisis de la tendencia seguida por el gasto ejercido en el combate de la epidemia de VIH/SIDA en México durante el periodo 1997-2002, contrastando el gasto y la distribución actual con las proyecciones internacionales y la situación imperante en otros países de la región. MATERIAL Y MÉTODOS: A partir de 1997, y durante tres bienios consecutivos, se ha desarrollado el análisis contable, sistematizado y exhaustivo de los flujos de financiamiento y gasto orientados al suministro de bienes y servicios relacionados con la atención y la prevención del VIH/SIDA, ejercicio denominado Cuentas Nacionales de SIDA. RESULTADOS: Se observa un incremento real y sostenido en el gasto total destinado al combate de la epidemia, estimado en 143% y ejercido en diferentes rubros, pero particularmente en el gasto en medicamentos antirretrovirales. No obstante, comparado con otros países de la región, el gasto mexicano en VIH/SIDA tiene un menor sesgo en cuanto a la asignación entre prevención y tratamiento. DISCUSIÓN: El gobierno mexicano se ha comprometido a garantizar el acceso universal al tratamiento antirretroviral para los pacientes con VIH/SIDA que lo necesiten y, al mismo tiempo, a mantener e incluso aumentar los esfuerzos en prevención. Estas actividades demandan incrementos en los recursos destinados para combatir la epidemia, por lo que es importante dar seguimiento a la eficiencia con que se estén utilizando los mismos, de forma que se pueda mejorar su asignación y focalización.OBJECITVE: This paper first presents the trend of HIV/AIDS expenditures in Mexico between 1997 and 2002. It then compares the allocation and magnitude of such expenditures within the international context and, in particular, how other countries in the region are allocating HIV/AIDS resources. MATERIAL AND METHODS: Since 1997, Mexico has developed and been utilizing a method for systematically and comprehensively analyze national resource

  8. Estimacion del impacto economico de la sequia agricola en el cultivo de maiz

    OpenAIRE

    Gallardo Ballat, Yurisbel; Brown Manrique, Oscar

    2016-01-01

    Se realiza una investigacion para determinar el impacto economico que provoca la sequia agricola en el cultivo de maiz en el municipio Venezuela. Se establecen tres escenarios de precipitaciones: seco, normal y lluvioso, asi como los niveles de impactos (bajo, medio y alto) a los que puede estar sometido el cultivo en condiciones de secano. En la investigacion se emplea la matriz de riesgo como herramienta fundamental para la determinacion de perdidas y ganancias financieras, teniendo en cuen...

  9. Determinantes del acceso al internet: Evidencia de los hogares del Ecuador

    OpenAIRE

    Botello-Peñaloza, Héctor Alberto

    2015-01-01

    El objetivo del artículo se centra en investigar los determinantes del uso de Iinternet en los hogares ecuatorianos en 2013, incorporando sus características socioeconómicas dentro de un modelo de elección discreta que realiza estimaciones sobre la probabilidad del uso de internet dentro del hogar con base en los microdatos de la encuesta de uso de TIC. Los principales hallazgos sugieren que el ingreso y el grado de educación de los individuos ejercen las mayores influencias positivas en el u...

  10. Evaluacion de los efectos del TLCUEM en el comercio bilateral y la inversion

    OpenAIRE

    Carlos Serrano Herrera; Alma Martinez Morales; Arnulfo Rodriguez Hernandez; Saide Aranzazu Salazar

    2015-01-01

    El tratado de libre comercio entre la UE y Mexico represento la eliminacion de aranceles para un grupo importante de bienes y de restricciones a los flujos de inversion. A quince años de la firma del acuerdo este documento presenta una estimacion de su impacto y analiza los beneficios ulteriores de una ampliacion que incluya productos agricolas hasta ahora no cubiertos

  11. Influence of iodine chemistry on source term assessment; Influencia de la quimica del yodo en la estimacion del termino fuente

    Energy Technology Data Exchange (ETDEWEB)

    Herranz Puebla, L E; Lopez Diez, I; Rodriguez Maroto, J J; Martinez Lopez-Alcorocho, A

    1991-07-01

    The major goal of a phenomenology analysis of containment during a severe accident situation can be spitted into the following ones: to know the containment response to the different loads and to predict accurately the fission product and aerosol behavior. In this report, the main results coming from the study of a hypothetical accident scenario, based on LA-4 experiment of LACE project, are presented. In order to do it, several codes have been coupled: CONTEMPT4/MOD5 (thermohydraulics), NAUA/MOD5 (aerosol physics) and IODE (iodine chemistry). It has been demonstrated the impossibility of assessing with confidence the Source Term if the chemical conduct of some radionuclides is not taken into account. In particular, the influence on the iodine retention efficiency of the sump of variables such as pH has been proven. (Author)12 refs.

  12. A reverse method to estimate initial temperatures in geothermal reservoirs; Un metodo inverso para estimacion de la temperatura inicial de yacimientos geotermicos

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Gutierrez, Alfonso [Instituto de Investigaciones Electricas, Gerencia de Geotermia, Cuernavaca, Morelos (Mexico)]. E-mail: aggarcia@iie.org.mx; Ramos Alcantara, Jose R. [Centro Nacional de Investigacion y Desarrollo Tecnologico, Departamento de Ingenieria Mecanica, Cuernavaca, Morelos (Mexico); Arellano Gomez, Victor M. [Instituto de Investigaciones Electricas, Gerencia de Geotermia, Cuernavaca, Morelos (Mexico)

    2010-01-15

    A method is presented for estimating the initial temperature in geothermal-reservoir formations. The method is based on control theory where the measured temperatures or temperature logs are compared with corresponding simulated temperatures for different times with the well closed. The comparison is made using a control algorithm that makes changes to the originally assumed reservoir temperatures and performs iterations until the best fit between the temperature logs and the simulated temperatures is obtained. The simulation of fluid transport and heat in the well includes the processes of circulation and stop in the presence of circulation losses, modeled on macroscopic balances of momentum and energy. The transport processes in the formation regard the reservoir as an isotropic porous medium and fluid flow is described by Darcy's law. This model generates the fields of temperatures, pressures and speeds as a function of time and space. The method was tested with data from well LV-3 in Las Tres Virgenes geothermal field, Baja California Sur, Mexico. The estimated temperatures of the undisturbed formation-or initial temperatures-are compared within {+-}15 degrees Celsius with the measured temperatures, which is an acceptable outcome from an engineering point of view. [Spanish] Se presenta un metodo para la estimacion de la temperatura inicial en las formaciones de yacimientos geotermicos. El metodo se basa en la teoria de control donde las temperaturas medidas o registros de temperatura se comparan con las correspondientes temperaturas simuladas a diferentes tiempos con el pozo cerrado. La comparacion se hace usando un algoritmo de control el cual hace cambios a las temperaturas de yacimiento originalmente supuestas y realiza iteraciones hasta que se obtiene el mejor ajuste entre los registros de temperatura y las temperaturas simuladas. La simulacion del transporte de fluidos y calor en el pozo incluye los procesos de circulacion y paro en presencia de

  13. Eficacia comparada del tratamiento presencial, semipresencial, y telefónico del tabaquismo en unidades especializadas

    OpenAIRE

    Baena Garcia, Antoni

    2015-01-01

    El tabaquisme és un dels deu factors principals de risc de mort. Segons estimacions de l’OMS, és responsable del 12% de les defuncions d'homes i el 6% de les morts de dones al món pel que en el segle XXI s'esperen uns mil milions de morts degudes a fumar si no es donen canvis significatius en la prevalença de consum. A Espanya aproximadament una de cada quatre persones majors de quinze anys fuma. Davant l'epidèmia de tabaquisme és necessari trobar un tractament de demostrada cost-eficàcia que...

  14. Estimación del peligro de incendios a partir de teledetección y variables metereológicas: variación temporal del contenido de humedad del combustible

    OpenAIRE

    Yebra Álvarez, Marta; Santis, Angela de; Chuvieco, Emilio

    2012-01-01

    Se presentan en este trabajo las relaciones observadas entre el contenido de humedad de diferentes especies Mediterráneas, índices meteorológicos de peligro de incendios e imágenes del sensor MODIS (Moderate Resolution Imaging Spectroradiometer). Se observa que ambos tipos de datos permiten realizar buenas estimaciones del contenido de humedad de las especies muestreadas. El subíndice meteorológico del sistema estadounidense, el h1000, así como el subíndice DC (Drou...

  15. Determinación del salario y capital humano en México: 1987-1993

    Directory of Open Access Journals (Sweden)

    Eduardo Zepeda Miramontes

    1999-01-01

    humano, más específicamente en alternativas de estimación econométrica. Los datos son descritos y analizados en cinco pasos: discusión sobre las consecuencias del uso de control de variables, comparación de los resultados con estudios similares nacionales e internacionales, análisis de la evolución de las estimaciones durante el periodo de referencia, y reflexiones finales.

  16. Estimated losses of energy in a power system using a semi-statistical methodology; Estimacion de perdidas de energia en un sistema electrico de potencia mediante una metodologia semi-estadistica

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Martinez, D [Centro Universitario UAEM, Valle de Teotihuacan (Mexico)]. E-mail: david_2mtz@hotmail.com; Martinez Lendech, J.F [Instituto Tecnologico de Estudios Superiores del Oriente del Estado de Hidalgo (Mexico)]. E-mail: mrtzlendech@hotmail.com; Garcia Herrera, C; Olvera Ricano, J.G. [Centro Universitario UAEM, Valle de Teotihuacan (Mexico)]. E-mails: cozobi_garcia@yahoo.com.mx; jgolverar@uaemex.mx

    2013-03-15

    Determination of electrical losses is one of the most important tasks for any enterprise dedicated to generation, transmission, transformation and/or distribution of electric energy. Any enterprise dedicated to these activities does continuously energy balances in order to estimate whole electrical losses of specific processes. However, it is necessary to classify the whole electrical losses into technical and non-technical losses. This paper presents a proposal for estimating technical and non-technical losses in an electrical power system. [Spanish] La determinacion de las perdidas de energia electrica es una de las labores mas importantes en cualquier empresa dedicada a la generacion, transmision, transformacion y/o distribucion de energia electrica. Es indudable que toda empresa dedicada a cualquiera de las actividades mencionadas anteriormente realiza periodicamente balances de energia que permiten estimar el valor de las perdidas totales de energia del proceso considerado. No obstante, para poder realizar un mejor analisis de la problematica de las perdidas de energia, es necesario separar el valor total de perdidas obtenido mediante un balance de energia, en perdidas tecnicas y perdidas no tecnicas. El presente trabajo presenta una propuesta para la estimacion de perdidas tecnicas y no tecnicas en un sistema electrico de potencia.

  17. Riesgo de anegamiento: estimaciones para la Cuenca Baja del Río Salado Flooding risk in the Salado River Basin

    OpenAIRE

    Pablo Mauricio Vázquez; Fabián Néstor Cabria; María Del Carmen Rojas; Mirta Beatriz Calandroni

    2009-01-01

    Está documentado que de 1986 al 2001 se incrementó en un 69% el área cultivada en sectores de la Pampa Deprimida, y que el avance agrícola se realizó sobre tierras que cíclicamente fueron afectadas por excesos de agua (anegamiento o inundación). Con el propósito de auxiliar la planificación y el ordenamiento de actividades agropecuarias en tierras de la Pampa Deprimida, nos propusimos generar información que denote el riesgo de anegamiento o inundación. Para alcanzar este objetivo se calculó ...

  18. La relación entre la capacidad de atencion dividida y la estimación prospectiva del tiempo

    OpenAIRE

    Susana Celeste Azzollini; Federico Faustino González; María Emilia Gómez

    2004-01-01

    Se realizó una investigación cuyo objetivo fue determinar si la capacidad de atención dividida resultaba explicativa de la variabilidad de las estimaciones prospectivas del tiempo. Los modelos teóricos sobre dicha estimación postulan que los recursos atencionales de procesamiento están divididos entre un procesador temporal, que cuenta y almacena unidades temporales subjetivas (Subjective Temporal Units - STUs) y otras actividades de procesamiento no temporal (Zakay, 1993...

  19. MODELO DE CONSUMO DE VIVIENDA ÓPTIMO: ESTIMACIONES PARA BOGOTÁ

    Directory of Open Access Journals (Sweden)

    MILTON CAMELO RINCÓN

    2017-01-01

    Full Text Available Este artículo presenta una breve revisión del sector de la vivienda en Bogotá, destacando que la política se ha enfocado primordialmente en el impulso a la demanda mediante el otorgamiento de subsidios y acceso al crédito hipotecario. La evolución reciente del mercado sugiere que la política efectuada no garantiza un consumo de vivienda óptimo. En este sentido, se propone un modelo teórico de valores óptimos de demanda, así como la estimación empírica de dichos valores a partir de datos de la Encuesta de Capacidad de Pago realizada en Bogotá en el año 2005. Los resultados muestran brechas importantes entre estratos y sugieren que los niveles de financiación necesarios para una política de demanda pueden resultar excesivamente altos. Se justifica así la pertinencia de una política que no sea enfocada necesariamente a la compra de vivienda, sino que se oriente al uso eficiente de la ofert a actual.

  20. Introduction to mathematical logic

    CERN Document Server

    Mendelson, Elliott

    2015-01-01

    The new edition of this classic textbook, Introduction to Mathematical Logic, Sixth Edition explores the principal topics of mathematical logic. It covers propositional logic, first-order logic, first-order number theory, axiomatic set theory, and the theory of computability. The text also discusses the major results of Gödel, Church, Kleene, Rosser, and Turing.The sixth edition incorporates recent work on Gödel's second incompleteness theorem as well as restoring an appendix on consistency proofs for first-order arithmetic. This appendix last appeared in the first edition. It is offered in th

  1. Satisfacción laboral y salario: ¿compensa la renta laboral las condiciones no monetarias del trabajo?

    OpenAIRE

    Borra Marcos, Cristina; Gómez García, Francisco

    2012-01-01

    Este trabajo aborda los determinantes del grado de satisfacción de los ocupados, centrándonos especialmente en el impacto sobre el mismo del salario. Nuestras estimaciones, basadas en una muestra representativa obtenida a partir de la Primera Encuesta de la Calidad del Empleo en la Ciudad de Sevilla (2006), corroboran los dos resultados siguientes: el salario es exógeno en la ecuación de satisfacción laboral y tiene un efecto significativamente positivo sobre la satisfacción laboral y, en seg...

  2. Productividad Total Factorial en el sector manufacturero del Perú: 2002-2007

    OpenAIRE

    Mario D. Tello

    2012-01-01

    Basado en datos a nivel de empresa del sector manufacturero, este trabajo estima, con métodos paramétricos modernos, el nivel y la tasa de crecimiento de la productividad total factorial en dicho sector en el período 2002-2007. Sujeto a las limitaciones de información y métodos usados, y para una muestra representativa de hasta 578 empresas, las estimaciones indican que la tasa de crecimiento de la PTF ha sido baja y no ha contribuido al crecimiento del valor real de producción de las firmas ...

  3. Estimation of consumption of the useful life in the nozzles of a gas turbine by the phenomenon of thermal fatigue; Estimacion de consumo de vida util en las toberas de una turbina de gas por el fenomeno de fatiga termica

    Energy Technology Data Exchange (ETDEWEB)

    Perez Hernandez, Efrain [Centro Nacional de Investigacion y Desarrollo Tecnologico (Cenidet), Cuernavaca, Morelos (Mexico); Mazur C, Zdzislaw; Garcia Illescas, R. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2007-11-15

    damage. [Spanish] La estimacion de vida util en los componentes calientes de las turbinas de gas como toberas y alabes es importante ya que sufren de cambios criticos de temperatura los cuales producen fatiga termomecanica durante los arranques, paros y cambios de fatiga para estimacion de vida util en las toberas de turbina de gas fabricados de aleacion base cobalto FSX-414 en las cuales se han desarrollado grietas durante la operacion. La inspeccion visual y metalografia de la tobera revelo muchas grietas por fatiga termomecanica en la superficie del alabe ademas de deterioracion de la aleacion. En los limites de grano se encontro una pelicula continua de carburos y tambien aumento de fraccion de carburos dentro de los granos. Esta densa y continua red de carburos reduce la ductilidad y aumenta la fragilidad, junto con la reduccion de energia de impacto (Charpy), facilita la iniciacion y propagacion de grietas. La iniciacion y propagacion de grieta en la aleacion fue debido a un mecanismo de fatiga termica y termofluencia que fue facilitado por fragilidad del material debido al deterioro previamente mencionado y a significativos niveles de esfuerzos termomecanicos. En el presente articulo se presentan los resultados de analisis de esfuerzos termicos a partir de los resultados de temperatura obtenidas de estudios previos de un analisis de transferencia de calor y flujo de fluidos mediante el programa Star-CD basado en volumen finito. Se muestra la metodologia empleada y las distribuciones de esfuerzos, los cuales se emplearon para el analisis de fatiga para la estimacion de vida util. Para eso se utilizo un modelo de elementos finitos en el programa NISA, asi como el programa de analisis de fatiga nCode. Para el conteo de ciclo de utilizo el metodo de Rainflow y se compararon los modelos de vida por fatiga de Manson-Coffin, Basquin, Morrow y Smih-Watson-Topper. La variacion de las propiedades mecanicas con la temperatura de la superaleacion empleada en esos componentes

  4. Distribución espacial y temporal del carbono orgánico del suelo en los ecosistemas terrestres de México

    Directory of Open Access Journals (Sweden)

    Fernando Paz Pellat

    2016-07-01

    Full Text Available La distribución espacial del carbono orgánico de los suelos (COS y su inventario, definen los requerimientos mínimos (diagnóstico para el desarrollo de políticas públicas de medidas de mitigación de gases efecto invernadero. Las estimaciones del inventario del almacén del COS a escala global son dependientes de las fuentes de información y metodologías usadas, generalmente con alta incertidumbre. Los inventarios del COS en los ecosistemas terrestres en México se revisan en este trabajo y muestran variaciones importantes en las estimaciones nacionales, las cuales son dependientes de los datos utilizados y las consideraciones en la estimación de la densidad aparente y la fracción de fragmentos gruesos (>2mm. Bajo la consideración de que la dinámica del COS puede caracterizarse por los cambios en las clases de uso del suelo y vegetación (USyV del INEGI, se muestran los resultados de los patrones temporales del COS por USyV así como, de acuerdo con las clases de FAO, para los informes de evaluación de los recursos forestales mundiales. Los resultados muestran la necesidad crítica de desarrollo de políticas conjuntas entre los sectores forestales y agropecuarios. Finalmente, dada la información disponible en México y, para reducir las incertidumbres, se analiza la relación textura-COS por ecosistemas terrestres de México, caracterizando los valores máximos y mínimos del COS en función del porcentaje de arena de los suelos, a profundidades de 0 a 30 cm. Los análisis que se realizaron en este trabajo se discuten con la finalidad de establecer nuevos desarrollos futuros para reducir las incertidumbres en las estimaciones del COS, tanto en su caracterización espacial como su evolución temporal.

  5. Aspectos sociales de la introducción del color en la red de televisión colombiana Social aspects of the introduction of color in the Colombian television network

    Directory of Open Access Journals (Sweden)

    Juan Arturo Camargo Uribe

    2011-12-01

    Full Text Available Resumen En el artículo narramos aspectos del proceso de introducción del color en la red colombiana de televisión. Nuestro objetivo analítico consiste en problematizar la comprensión lineal característica de las narraciones históricas progresivas del cambio socio-técnico, mostrando una red heterogénea de circunstancias históricas, sociales, económicas, culturales, técnicas y políticas involucradas en el proceso, las cuales permiten explicar las alternativas tecnológicas consideradas y las trayectorias técnicas e institucionales resultantes. Las conclusiones de la revisión histórica sugieren que una comprensión sobresimplificada del cambio socio-técnico redunda en una baja capacidad para orientarlo de acuerdo con metas sociales ambiciosas.Abstract In this paper, we report some aspects of the process of the introduction of color to the Colombian television network. Our analytical approach is to see lineal comprehensions, typical of progressive histories of technological change, as problematic. Consequently, we try to take into account heterogeneous arrays of the historical, social, economical, cultural, technical and political circumstances involved in the process. This approach allows us to explain the technological alternatives that were considered and the technical and institutional pathways that were effectively implemented. The historical review suggests that an oversimplified comprehension of socio-technical change gives rise to a low capacity to guide it with respect to more ambitious social goals.

  6. Análisis de la heterogeneidad en los retornos a la educacíon en función del gasto público regional

    OpenAIRE

    Ventura Neyra, Edgar

    2012-01-01

    A partir de los aportes de Mincer (1958, 1979), los retornos a la educación han sido ampliamente estudiados en la literatura económica. Psacharopoulos (1973, 1985, 1994 y 2004) presenta estimaciones con mínimos cuadrados ordinarios para distintas regiones del mundo. Angrist y Krueger (1991) y Ashenfelter y Krueger (1994) proponen evidencia para Estados Unidos utilizando metodologías que permiten controlar por características no observables a nivel del hogar y del individuo. Ellos encuentra...

  7. Premessa del progetto esecutivo del piano pilota per la conservazione dei beni culturali in Umbria / Introduction to the executive project of the Pilot plan for the “programmed conservation” of cultural heritage in Umbria Region

    Directory of Open Access Journals (Sweden)

    Giovanni Urbani

    2011-11-01

    Il primo testo prescelto, che appare ancora oggi sostanzialmente attuale e predittivo rispetto ai problemi contemporanei della gestione dei beni culturali, è lapremessa al progetto esecutivo del piano pilota per la conservazione dei beni culturali della regione Umbria, elaborato da Giovanni Urbani nel 1975.

  8. Estimación del número de indígenas en la región nordeste del Uruguay a partir de ADNmt

    Directory of Open Access Journals (Sweden)

    Sans, Mónica

    2001-01-01

    Full Text Available A partir del estudio del ADNmt en la población actual de los departamentos de Tacuarembó y Cerro Largo, se concluyó que el 59% de la población de Tacuarembó y el 30% en Cerro Largo tenían haplogrupos indígenas (se analizaron los haplogrupos A, B, C, D, y en el segundo caso, también el X. El objetivo de esta ponencia fue realizar una aproximación al número de mujeres indígenas que potencialmente contribuyeron con sus haplogrupos a la conformación de la población actual. Para esto, se analizan los datos genéticos con relación a datos censales, estimaciones y anuarios estadísticos. Se partió de la transmisión uniparental del ADNmt, asumiendo flujo génico direccional, cruzamientos al azar y a la población indígena como receptora de pobladores no indígenas. El período considerado abarca desde la fundación de las ciudades capitales departamentales (Melo, 1795 y Tacuarembó, 1832 hasta el último censo de población (1996. Para el siglo XX, se calculó el crecimiento vegetativo a partir de datos estadísticos de natalidad y mortalidad, mientras que para el siglo XIX, se realizaron estimaciones a partir de diversos modelos demográficos y datos comparativos. Las diferencias entre estimaciones basadas en el crecimiento vegetativo y los datos censales se interpretan como inmigración de individuos no indígenas o emigración de población al azar. Se discuten los valores de población estimados y las asunciones realizadas.

  9. INTRODUZIONE / INTRODUCTION

    African Journals Online (AJOL)

    Lumley, nel lontano (ma non troppo) 1996. L'apparizione di quel libro ha provocato una sorta di reazione a catena il cui primo risultato è stato il numero di Annali d'Italianistica del 1998, dedicato anch'esso agli Italian Cultural Studies, che in un certo senso ne rappresenta il corrispettivo nordamericano (Dombroski 1998). A.

  10. Presentación (Introduction

    Directory of Open Access Journals (Sweden)

    Margarita Gómez Gómez

    2015-03-01

    Full Text Available Resumen: Presentación del monográfico "Rey, sello y representación: el poder de la escritura y el documento en el gobierno de las Indias".Abstaract: Introduction of the monograph "King, seal and representation: the power of writing and document in the government of the Spanish Indies."

  11. ADAMS - Introduction

    International Nuclear Information System (INIS)

    Song, Cheol Gi

    2003-06-01

    This book introduces ADAMS, which is composed of 20 modules ; stamping mechanism, ADAMS introduction, GUI overview failing stone project motion one DOF pendulum inclined plane lift mechanism I mechanism II mechanism III suspension subsystem suspension-steering system spring-damper I spring-damper II hatchback I hatchback II hatchback III cam-rocker-valve target practice recommended practice and switch mechanism workshop.

  12. Introduction; Vvedenie

    Energy Technology Data Exchange (ETDEWEB)

    Nikitin, V I

    1961-07-01

    Introduction describes the present book. Its includes seven chapters. First four from them touch with glycerin of acetylene line-their receiving, studying their oxidation reactions, transformations under the influence of dehydrating methods. Last three chapters dedicated to glycerin of ethylen line-synthesis, their cyclization into substituted dihydropyran.

  13. Determinantes del acceso al internet: Evidencia de los hogares del Ecuador

    Directory of Open Access Journals (Sweden)

    Héctor Alberto Botello-Peñaloza

    2015-01-01

    Full Text Available El objetivo del artículo se centra en investigar los determinantes del uso de Iinternet en los hogares ecuatorianos en 2013, incorporando sus características socioeconómicas dentro de un modelo de elección discreta que realiza estimaciones sobre la probabilidad del uso de internet dentro del hogar, con base en los microdatos de la encuesta de uso de TIC. Los principales hallazgos sugieren que el ingreso y el grado de educación de los individuos ejercen las mayores influencias positivas en el uso de internet, al igual que se evidencian brechas significativas de género, con un asentamiento en las áreas rurales más que en las urbanas, especialmente por la falta de infraestructura. Estos resultados destacan la importancia de la intervención pública en el aumento del acceso a las nuevas tecnologías, a la vez que el papel del capital humano en la reducción de las brechas sociales en Ecuador.

  14. Fusion: introduction

    International Nuclear Information System (INIS)

    Decreton, M.

    2006-01-01

    The article gives an overview and introduction to the activities of SCK-CEN's research programme on fusion. The decision to construct the ITER international nuclear fusion experiment in Cadarache is highlighted. A summary of the Belgian contributions to fusion research is given with particular emphasis on studies of radiation effects on diagnostics systems, radiation effects on remote handling sensing systems, fusion waste management and socio-economic studies

  15. Radio-Observaciones del OH EN la Coma del Cometa Halley Desde EL Hemisferio Sur

    Science.gov (United States)

    Silva, A. M.; Bajaja, E.; Morras, R.; Cersosimo, J. C.; Martin, M. C.; Arnal, E. M.; Poppel, W. G. L.; Colomb, F. R.; Mazzaro, J.; Olalde, J. C.; Boriakoff, V.; Mirabel, I. F.

    1987-05-01

    Se utilizó una antena de 30 metros del Instituto Argentino de Radioastronomía para observaciones diarias Cf ebrero a abril de 1986) de la transición en 1667 MHz ( λ = 18 cm) del OH en la coma del cometa Halley. De las observaciones realizadas se concluye: 1) El número promedio de moléculas de OH en la coma durante 37 días de observación fue de (8.9±3.5)x1034 moléculas, lo que implica una tasa de producción promedio de OH de 1.8x1029 moléculas seg-1 y consecuentemente una pérdida de masa promedio de 17±6 toneladas seg-1 . Este valor está de acuerdo con las mediciones realizadas por las sondas Vega y Giotto. 2) El monitoreo desde el lAR revela la existencia de variaciones bruscas en los flujos de absorción del OH. Estas variaciones son consistentes con los modelos que representan la producción gaseosa a partir de ejecciones y/o desprendimientos discretos de materia congelada del núcleo. 3) Las variaciones en la densidad de flujo son consistentes con las estimaciones de los tiem- pos de vida medios del H2O y del OH en presencia del campo de radiación solar. 4) Se encuentra una correlación entre la intensidad del flujo absorbido y anisotropías en Ia dinamica de la coma.

  16. Aplicaciones del modelo On/Off al tráfico agregado en las redes de comunicaciones

    OpenAIRE

    Parra León, Andrés; Piedrahita, Elkin M; Salcedo, Octavio

    2011-01-01

    Los modelos que permiten recrear trazas de tráfico generadas en una red de comunicaciones, pueden utilizarse en predicciones y estimaciones de tráfico a fin de optimizar el uso de los recursos de la red; uno de estos es el modelo On/Off, el cual permite describir el comportamiento del tráfico agregado por una o más fuentes de información. La importancia de este artículo se centra en la incidencia que dicho modelo ha tenido al aplicarse en diversas tecnologías de comunicaciones, para esto se e...

  17. Estimation of damage by inmates of a PWR Reactor neutron irradiation. Project ZIRP; Estimacion del Dano por Irradiacion Neutronica en los Internos de un Reactor PWR. Proyecto ZIRP

    Energy Technology Data Exchange (ETDEWEB)

    Cadenas Mendicoa, A. M.

    2013-07-01

    The study presented here focuses on the analysis of neutron and gamma irradiation damage suffered by the inmates of the JC NPP reactor metallic materials throughout its operational life. Such analysis of radiation are part of a project of great international impact, led by EPRI (Electric Power Research Institute) from the MRP (Materials Reliability Program), which aims to relate the degradation of the properties of metallic materials of the inmates of the reactor, with the conditions of operation and irradiation to which have been subjected during the operational life of the plant.

  18. Estimation of the variance of noise in digital imaging for quality control; Estimacion de la varianza del ruido en imagen digital para control de calidad

    Energy Technology Data Exchange (ETDEWEB)

    Soro Bua, M.; Otero Martinez, C.; Vazquez Vazquez, R.; Santamarina Vazquez, F.; Lobato Busto, R.; Luna Vega, V.; Mosquera Sueiro, J.; Sanchez Garcia, M.; Pombar Camean, M.

    2011-07-01

    In this work is estimated variance kerma function pixel values for the real response curve nonlinear digital image system, without resorting to any approximation to the behavior of the detector. This result is compared with that obtained for the linearized version of the response curve.

  19. Interpretando correctamente en salud pública estimaciones puntuales, intervalos de confianza y contrastes de hipótesis

    Directory of Open Access Journals (Sweden)

    Scotto Manuel G

    2003-01-01

    Full Text Available El presente ensayo trata de aclarar algunos conceptos utilizados habitualmente en el campo de investigación de la salud pública, que en numerosas situaciones son interpretados de manera incorrecta. Entre ellos encontramos la estimación puntual, los intervalos de confianza, y los contrastes de hipótesis. Estableciendo un paralelismo entre estos tres conceptos, podemos observar cuáles son sus diferencias más importantes a la hora de ser interpretados, tanto desde el punto de vista del enfoque clásico como desde la óptica bayesiana.

  20. Introduction pages

    Directory of Open Access Journals (Sweden)

    Radu E. Sestras

    2015-09-01

    Full Text Available Introduction Pages and Table of Contents Research ArticlesInsulin Requirements in Relation to Insulin Pump Indications in Type 1 DiabetesPDFGabriela GHIMPEŢEANU,\tSilvia Ş. IANCU,\tGabriela ROMAN,\tAnca M. ALIONESCU259-263Comparative Antibacterial Efficacy of Vitellaria paradoxa (Shea Butter Tree Extracts Against Some Clinical Bacterial IsolatesPDFKamoldeen Abiodun AJIJOLAKEWU,\tFola Jose AWARUN264-268A Murine Effort Model for Studying the Influence of Trichinella on Muscular Activity of MicePDFIonut MARIAN,\tCălin Mircea GHERMAN,\tAndrei Daniel MIHALCA269-271Prevalence and Antibiogram of Generic Extended-Spectrum β-Lactam-Resistant Enterobacteria in Healthy PigsPDFIfeoma Chinyere UGWU,\tMadubuike Umunna ANYANWU,\tChidozie Clifford UGWU,\tOgbonna Wilfred UGWUANYI272-280Index of Relative Importance of the Dietary Proportions of Sloth Bear (Melursus ursinus in Semi-Arid RegionPDFTana P. MEWADA281-288Bioaccumulation Potentials of Momordica charantia L. Medicinal Plant Grown in Lead Polluted Soil under Organic Fertilizer AmendmentPDFOjo Michael OSENI,\tOmotola Esther DADA,\tAdekunle Ajayi ADELUSI289-294Induced Chitinase and Chitosanase Activities in Turmeric Plants by Application of β-D-Glucan NanoparticlesPDFSathiyanarayanan ANUSUYA,\tMuthukrishnan SATHIYABAMA295-298Present or Absent? About a Threatened Fern, Asplenium adulterinum Milde, in South-Eastern Carpathians (RomaniaPDFAttila BARTÓK,\tIrina IRIMIA299-307Comparative Root and Stem Anatomy of Four Rare Onobrychis Mill. (Fabaceae Taxa Endemic in TurkeyPDFMehmet TEKİN,\tGülden YILMAZ308-312Propagation of Threatened Nepenthes khasiana: Methods and PrecautionsPDFJibankumar S. KHURAIJAM,\tRup K. ROY313-315Alleviate Seed Ageing Effects in Silybum marianum by Application of Hormone Seed PrimingPDFSeyed Ata SIADAT,\tSeyed Amir MOOSAVI,\tMehran SHARAFIZADEH316-321The Effect of Halopriming and Salicylic Acid on the Germination of Fenugreek (Trigonella foenum-graecum under Different Cadmium

  1. Proceso de Conceptualización del Entendimiento del Negocio para Proyectos de Explotación de Información

    Directory of Open Access Journals (Sweden)

    Federico Carlos Peralta

    2014-10-01

    Full Text Available La disponibilidad y análisis de la información son esenciales para garantizar la correcta toma de decisiones. Debido al excesivo volumen de datos de una organización, resulta imprescindible estructurar y categorizar la masa de información que debe ser relevada para alcanzar la comprensión del negocio. Es fundamental identificar la información crítica para el negocio y obtener la misma desde el comienzo del proyecto de manera sistemática y articulada. En base a la información relevada, el responsable del proyecto podrá realizar estimaciones válidas y gestionar correctamente cada una de las tareas y actividades del proyecto. Cualquier proyecto de software puede fracasar como consecuencia de un entendimiento incorrecto del negocio, lo cual puede tener un fuerte impacto en la operación del negocio respectivo. En este contexto, se propone la construcción de un proceso de conceptualización del entendimiento del negocio para proyectos de Explotación de Información.

  2. La pobreza infantil en clave de derechos humanos y sociales. Definiciones, estimaciones y principales determinantes (2010-2014

    Directory of Open Access Journals (Sweden)

    Ianina Tuñón

    2017-01-01

    Full Text Available Los niños, niñas y adolescentes conforman una de las poblaciones más vulnerables a la pobreza con relativa independencia de la definición y método de medición que se utilice. En este artículo se presentan diferentes formas de medir la pobreza a nivel de la infancia y adolescencia en la Argentina urbana, y se presenta un índice multidimensional que busca dar cuenta de la complejidad del fenómeno. Se definieron espacios de privación relacionados con distintas dimensiones de derecho: alimentación, saneamiento, vivienda, salud, estimulación temprana, educación e información. A partir de los datos de la Encuesta de la Deuda Social Argentina, se analiza la incidencia, evolución y determinantes de las privaciones entre 2010 y 2014.

  3. First assessment of low- to medium-temperature geothermal reserves in 20 Mexican states; Primera estimacion de las reservas geotermicas de temperatura intermedia a baja en veinte estados de Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Iglesias, Eduardo R.; Torres, Rodolfo J. [Instituto de Investigaciones Electricas, Gerencia de Geotermia, Cuernavaca, Morelos (Mexico)]. E-mail: iglesias@iie.org.mx

    2009-07-15

    A first, partial, assessment is included of the low- to medium-temperature geothermal reserves in 20 Mexican States and their aggregate value. The assessment covers about 29.16% of the identified geothermal-surface manifestations in the public database. For reserve assessments, we use the volumetric method, supplemented with Montecarlo simulations and statistics, to quantify inherent uncertainties. Our estimations are presented on a state-by-state basis. We estimate the aggregated reserves of the 20 states as between 7.7 x 1016 and 8.6 x 1016 kJ, with 90% confidence. The most likely reservoir temperatures range between 60-180 degrees Celsius, with a mean of 111 degrees Celsius. Such massive amounts of recoverable energy-and the associated temperatures-are potentially important for the economic development of nearby localities and the nation. [Spanish] En este trabajo se hace una primera estimacion, parcial, de las reservas geotermicas de temperatura intermedia a baja de Mexico. La estimacion incluye 29.16% de las manifestaciones geotermicas identificadas en la base de datos publica utilizada. Para estimar las reservas se utilizo el metodo de volumen, suplementado con simulaciones por el metodo de Montecarlo, con el fin de cuantificar las incertidumbres inherentes. Las estimaciones se presentan estado por estado. Estos resultados indican que las reservas agregadas de los 20 estados considerados estan entre 7.7 x 1016 y 8.6 x 1016 kJ, con 90% de confianza. La distribucion de las temperaturas de yacimiento mas probables varia entre aproximadamente 60 y 180 grados centigrados, con un valor medio de 111 grados centigrados. La enorme magnitud de estas reservas, y sus temperaturas asociadas, son potencialmente importantes para el desarrollo economico de las poblaciones ubicadas en su cercania.

  4. Modelaje geológico y de recursos del yacimiento Pastelillo utilizando el krigeaje de indicadores

    Directory of Open Access Journals (Sweden)

    José Q. Cuador-Gil

    2005-03-01

    Full Text Available En ocasiones la complejidad y variabilidad de un yacimiento mineral hace dificil establecer dominios geológicos homogéneos que puedan ser utilizados para aplicar control geológico a la estimación de los parámetros más relevantes. La imposibilidad de crear un modelo geológico con unidades bien definidas conduce a trabajar con poblaciones heterogéneas, lo cual degrada considerablemente la calidad de las estimaciones. Tal es el caso de Pastelillo, yacimiento de materia prima para cemento, en el que es difícil reproducir la geometría de los distintos tipos tecnológicos utilizando el método tradicional de correlación geológica. Las distintas litologías que conforman el yacimientos están completamente mezcladas tanto en el plano como en la vertical y estos frecuentes cambios faciales provocan una gran variabilidad litológica y tecnológica en el yacimiento. Teniendo en cuenta lo anterior se propone emplear un método de interpolación espacial que permita hacer estimaciones en presencia de poblaciones complejas. En el artículo se establece un modelo tecnológico y de recursos para el yacimiento Pastelillo a partir del empleo de una técnica de estimación de la geoestadística no lineal: el krigeaje de indicadores.

  5. Pobreza por Ingresos en Argentina y Bahía Blanca: Estimaciones de referencia y cuestiones metodológicas

    Directory of Open Access Journals (Sweden)

    María Emma Santos

    2016-11-01

    Full Text Available En este trabajo se estima la indigencia y pobreza por ingresos en 2014 y 2015 para el total de aglomerados urbanos de Argentina y para el caso particular de Bahía Blanca, una ciudad intermedia, eminentemente industrial y comercial, con altos niveles de desempleo e indigencia recientes. Se encuentra que a mediados de 2015 una de cada diez personas estaba en situación de indigencia y casi tres de cada diez estaba en situación de pobreza, lo cual equivale a 11.6 millones de personas aproximadamente. En el caso del aglomerado de Bahía Blanca, una de cada 20 personas era indigente, y el 18% era pobre, lo cual se traduce en 15 mil y 54 mil personas en situación de indigencia y pobreza. El trabajo también expone algunos puntos críticos de la metodología de medición de pobreza por ingresos que requieren reflexión y mejoramiento en el proceso de restitución de las estadísticas oficiales de pobreza.Palabras clave: pobreza, indigencia, Argentina, Bahía Blanca.Código JEL: I32. Income Poverty in Argentina and Bahía Blanca: Reference estimates and methodological issuesAbstractIn this paper we estimate the indigence and poverty by income in 2014 and 2015 for the total urban agglomerations of Argentina and for the particular case of Bahía Blanca, an intermediate city, eminently industrial and commercial, with high levels of recent unemployment and indigence. It is found that by the middle of 2015 one in ten people was in a situation of indigence and almost three out of ten were in poverty, which is equivalent to approximately 11.6 million people. In the case of the Bahía Blanca agglomerate, one in 20 people were indigent, and 18% were poor, which translates into 15,000 and 54,000 people living in extreme poverty and poverty. The paper also presents some critical points of the methodology for measuring poverty by income that require reflection and improvement in the process of restitution of official poverty statistics.Keywords: poverty

  6. La epidemia del zika beneficia a la salud materna?

    Directory of Open Access Journals (Sweden)

    Alberto Rizo-Gil

    2016-02-01

    Full Text Available En Colombia se reportan entre 550.000 y 700.000 nacimientos en 12 meses según estimaciones basadas en las tendencias de natalidad del primer decenio del siglo XXI. Según registros estadísticos y proyecciones de estudios recientes , en el país se reporto un promedio anual de 476 muertes de mujeres embarazadas entre 2005 y 2012, por diversas causas. El Análisis de Situación de Salud (asis del Ministerio de Salud reportó en 2012 una razón de mortalidad (rmm de 65.89 muertes maternas anuales por cada 100.000 nacimientos, cifra en descenso pero que no se compadece con el estado de desarrollo de Colombia. Si se compara la rmm del país con las de Cuba, Costa Rica o Chile, se podrá ver cuánto estos países, con bajas cifras de la rmm, (< 22 x 100.000 nos aventajan en el cuidado de la mujer durante su gestación, el parto y el puerperio.

  7. Introduction of a new management programme for the urban solid waste in the placed organized by 'Consorzio AREA' of Copparo (FE). Verification at pilot scale; Introduzione di un nuovo sistema per la gestione dei rifiuti solidi urbani nel territorio del Consorzio AREA di Copparo (FE). Verifica pilota del sistema

    Energy Technology Data Exchange (ETDEWEB)

    Ceccotto, D.; Barboni, A.; Malago, L.; Sunseri, M.; Spiandorello, R. [Consorzio Aziendale di Igiene Ambientale e Servizi Polivalenti, Copparo, FE (Italy)

    1999-08-01

    The paper describes an Integrate Source Collection System applied to municipal solid waste, through: introduction of source collection methodologies of the organic fraction (FORSU), of the co-mingled recyclable fraction (RDM) and of the no-recyclable fraction (remaining part), realization of structures (transfer station) able to optimize the sorting and the transportation of the different fraction. The main principle followed interprets the differential collection no longer as an additional service (which would mean an increase in cost) but a substitutive service to the normal one (where the increase in cost is compensated by a reduction of cost referent to no-recyclable fraction). The objects of the studied system: increasing of the collection aimed to recover and recycling minimizing managing cost; have been carried out through an experimental application. Moreover the optimization of the collection routes, reached using numerical computing is presented. [Italian] Nel presente lavoro si descrive l'applicazione di un servizio di raccolta integrale dei RSU tramite: l'introduzione delle metodologie di raccolta Umido (Frazione Organica dei Rifiuti Solidi Urbani), Secco Riciclabile (Raccolta Differenziata Multimediale) e Secco Non Riciclabile (Indifferienziato), la realizzazione delle strutture necessarie al suo funzionamento ed alla sua razionalizzazione economica (Stazione di Trasferenza). La metodologia proposta presenta un carattere fortemente innovativo. Il principio generale seguito interpreta la raccolta indifferenziata non piu' come servizio aggiuntivo (quindi con incremento dei costi in funzione dell'incremento dei servizi relativi), ma come sistema sostitutivo al normale servizio (incremento dei costi compensato dalla riduzione dei costi relativi alla frazione indifferenziata sia in temini di smaltimento che di raccolta). Le finalita' del sistema: massimizzare i livelli di intercettazione e recupero delle frazioni riciclabili

  8. La introducción de tecnologías en los sistemas sanitarios: del dicho al hecho The introduction of technologies in health care systems: from saying to doing

    Directory of Open Access Journals (Sweden)

    Anna García-Altés

    2004-10-01

    Full Text Available Introducción: La evaluación de tecnologías sanitarias (ETS es un instrumento basado en la evidencia científica para la toma de decisiones sobre la inclusión de avances tecnológicos en los sistemas sanitarios. Ahora bien, hay múltiples condicionantes y elementos, provenientes tanto de la propia ETS como de profesionales, políticos y de la sociedad, que influyen en que los resultados de la ETS se lleven a cabo. El objetivo de este artículo es describir los principales elementos que condicionan la aplicación de la ETS en la práctica y su uso en el ámbito clínico y en la política sanitaria. Métodos: Se ha realizado una búsqueda bibliográfica en la base de datos biomédica PubMed. Se revisaron las referencias seleccionadas, así como la bibliografía adicional y la literatura gris identificada a partir de las referencias, que trataba de temas relacionados con la práctica de la ETS. Los resultados se presentan de manera descriptiva, haciendo un análisis de los estudios agrupados por los distintos aspectos de la ETS. Resultados: Algunos elementos clave en los que hay posibilidades de mejora son la estandarización del proceso de evaluación, la descripción de la misión de la organización, la priorización de tecnologías a evaluar, la claridad en la presentación de los resultados, la inclusión de valores sociales y de coste-efectividad, y el aumento de la coordinación internacional. Conclusiones: Para muchos, la razón de ser de la ETS es su función explícita en la toma de decisiones, aunque esto no está exento de problemas. Todo parece indicar que el futuro inmediato de la ETS pasa por explicitar los procesos de evaluación y la clara inclusión de la ETS en la toma de decisiones, con todo lo que ello supone de priorización de tecnologías, establecimiento de límites en cuanto al consumo de recursos económicos y vinculación con los procesos políticos.Introduction: Health technology assessment (HTA is a tool based on

  9. Estimación del crecimiento del jurel Trachurus murphyicapturado en el Perú, a partir del análisis de las frecuencias por tallas

    Directory of Open Access Journals (Sweden)

    Erich Díaz

    2013-10-01

    Full Text Available Se presentan las estimaciones de los parámetros de crecimiento del modelo de von Bertalanffy para el jurel Trachurus murphyiNichols 1920 capturado en el mar peruano entre 1972 y 2012, a partir de análisis de frecuencias por tallas. La L ∞ fue estimada a partir de la máxima talla observada a lo largo de la historia de su pesquería y se le mantuvo como parámetro fijo en la estimación del parámetro de crecimiento k a partir del ajuste directo de una curva de crecimiento sobre la progresión mensual de modas. Los valores estimados fueron: L ∞ = 81.6 cm y k = 0.167 año -1 . Se destaca que este valor de k es similar al estimado por otros autores y con otros métodos para el Perú, y es a su vez más alto que el estimado para el T. murphyi capturado frente a las costas de Chile. Estos resultados sugieren que el T. murphyien el Perú tiene una velocidad de crecimiento más alta que el T. murphyide Chile.

  10. Introduction to IBS

    Science.gov (United States)

    ... Day Art of IBS Gallery Contact Us Search Introduction to IBS Details What is IBS? Last Updated: ... tax-deductible donation. Make Donation What is IBS? Introduction to IBS Symptoms of IBS What Causes IBS? ...

  11. Eficiencia del transporte urbano de pasajeros en la localidad de Bahía Blanca, Argentina 2007-2014

    OpenAIRE

    Viego, Valentina; Universidad Nacional del Sur; Volonté, Carolina; Universidad Nacional del Sur,

    2016-01-01

    El objetivo de este artículo es evaluar la eficiencia en la prestación del servicio de transporte urbano por colectivo en la ciudad de Bahía Blanca, Argentina. Las estimaciones se realizaron mediante la aplicación del método de frontera estocástica a una función de producción con datos de panel para el período 2007-2014. Los resultados indican que el nivel medio de eficiencia no varió significativamente durante el período analizado. Asimismo, las transferencias monetarias y la concentración d...

  12. Radiation protection requirements necessary for the introduction of the Ga-68 in a Nuclear Medicine Service; Requisitos de protección radiológica necesarios para la introducción del Ga-68 en un Servicio de Medicina Nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Campayo, G.; Ibáñez-Roselló, B.; Reinado, D.; Verdú, G.

    2016-07-01

    The new diagnostic technique that use Ga-68 entail a radiation safety review in nuclear medicine service. It will be evaluate the exposure risk of the workers, who actually are exposed to dose associated to labeled radiopharmaceuticals with F-18, and are estimated the risks due to radiopharmaceuticals with Ga-68. A barrier check-up is made in the current location and an increase of dose rate is estimated with the introduction of Ga-68. Two studies have been done, exposure risk and barrier check-up, in a particular installation. The results obtained conclude that the introduction of Ga-68 in a nuclear medicine service is possible taking into account the minimal modifications in the installation. However, the related modifications have to be studied for each different installation. [Spanish] Las nuevas técnicas diagnósticas que hacen uso del Ga-68 implica la revisión de aspectos de protección radiológica en un servicio de medicina nuclear. Se evalúa el riesgo de exposición de los trabajadores, que en la actualidad están expuestos a los riesgos asociados a los radiofármacos marcados con F-18, y se estiman los debidos a radiofármacos con Ga-68. Se realiza una verificación de barreras en la situación actual y se estima el aumento de la tasa de dosis con la introducción del Ga-68. Se han aplicado ambos estudios, de riesgo de exposición y de verificación de barreras, a una instalación concreta. Los resultados obtenidos concluyen que la introducción del Ga-68 en un servicio de medicina nuclear es posible teniendo en cuenta unas modificaciones mínimas de la instalación. No obstante, las modificaciones aplicables deben ser estudiadas para cada instalación concreta.

  13. Caries dental en escolares del Distrito Federal

    Directory of Open Access Journals (Sweden)

    IRIGOYEN-CAMACHO MARÍA ESTHER

    1997-01-01

    Full Text Available Objetivo. Presentar las estimaciones de la prevalencia y la severidad de caries dental, así como las necesidades de tratamiento de la población escolar del Distrito Federal examinada en la encuesta de caries dental que se llevó a cabo en 1988 con la finalidad de obtener datos basales sobre caries en los escolares al inicio del Programa Nacional de Fluoruración de la Sal en México. Material y métodos. La población de estudio fue seleccionada empleando un marco muestral basado en el listado de las escuelas primarias y los jardines de niños registrados por la Secretaría de Educación Pública en 1988. En el examen de la cavidad bucal de los escolares se utilizaron los criterios diagnósticos señalados por la Organización Mundial de la Salud. Resultados. Un total de 4 475 escolares de 5 a 12 años de edad participaron en el estudio. La prevalencia de caries dental en la población alcanzó 90.5%. El índice de necesidades de tratamiento fue elevado (79.6%. El promedio de los índices de caries en los escolares de 12 años de edad fue CPOD= 4.42 (desviación estándar -DE- 3.2 y CPOS= 6.53 (DE 4.8. Conclusiones. Los resultados de la encuesta subrayan la pertinencia de un programa preventivo de amplia cobertura, como el de fluoruración de la sal. Además, muestran que se requiere elaborar estrategias para mejorar el acceso de la población escolar a los servicios odontológicos del sistema de salud en México.

  14. Estimaciones de cambio climatico para Michoacan: Implicaciones para el sector agropecuario y forestal y para la conservacion de la Mariposa Monarca [In Spanish

    Science.gov (United States)

    Cuauhtemoc Saenz-Romero; Gerald E. Rehfeldt; Nicholas L. Crookston; Pierre Duval; Jean Beaulieu

    2009-01-01

    El cambio climatico, conocido comunmente como calentamiento global, es el incremento de la temperatura a nivel mundial y los cambios que de ello derivan, causados por el "efecto invernadero" del bioxido de carbono (CO2) y otros gases emitidos a la atmosfera. El uso de combustibles fosiles (carbon y derivados del petroleo, como gasolina, diesel, combustoleo y...

  15. Introduction to graph theory

    CERN Document Server

    Trudeau, Richard J

    1994-01-01

    Preface1. Pure Mathematics Introduction; Euclidean Geometry as Pure Mathematics; Games; Why Study Pure Mathematics?; What's Coming; Suggested Reading2. Graphs Introduction; Sets; Paradox; Graphs; Graph diagrams; Cautions; Common Graphs; Discovery; Complements and Subgraphs; Isomorphism; Recognizing Isomorphic Graphs; Semantics The Number of Graphs Having a Given nu; Exercises; Suggested Reading3. Planar Graphs Introduction; UG, K subscript 5, and the Jordan Curve Theorem; Are there More Nonplanar Graphs?; Expansions; Kuratowski's Theorem; Determining Whether a Graph is Planar or

  16. Bayesian Networks An Introduction

    CERN Document Server

    Koski, Timo

    2009-01-01

    Bayesian Networks: An Introduction provides a self-contained introduction to the theory and applications of Bayesian networks, a topic of interest and importance for statisticians, computer scientists and those involved in modelling complex data sets. The material has been extensively tested in classroom teaching and assumes a basic knowledge of probability, statistics and mathematics. All notions are carefully explained and feature exercises throughout. Features include:.: An introduction to Dirichlet Distribution, Exponential Families and their applications.; A detailed description of learni

  17. Introduction to imprecise probabilities

    CERN Document Server

    Augustin, Thomas; de Cooman, Gert; Troffaes, Matthias C M

    2014-01-01

    In recent years, the theory has become widely accepted and has been further developed, but a detailed introduction is needed in order to make the material available and accessible to a wide audience. This will be the first book providing such an introduction, covering core theory and recent developments which can be applied to many application areas. All authors of individual chapters are leading researchers on the specific topics, assuring high quality and up-to-date contents. An Introduction to Imprecise Probabilities provides a comprehensive introduction to imprecise probabilities, includin

  18. Introduction to clinical nutrition

    National Research Council Canada - National Science Library

    Sardesai, Vishwanath M

    2012-01-01

    .... Introduction to Clinical Nutrition, Third edition discusses the physiologic and metabolic interrelationships of all nutrients and their roles in health maintenance and the prevention of various...

  19. DETERMINANTES DEL PRECIO DE VIVIENDAS EN LA REGIÓN METROPOLITANA DE CHILE

    Directory of Open Access Journals (Sweden)

    Andrés Sagner T

    2011-01-01

    Full Text Available Este artículo analiza econométricamente los factores que determinaron la dinámi-ca de precios del sector residencial en la región metropolitana de Chile durante elperiodo 1990-2007. Los resultados muestran que la antigüedad y superficie son de-terminantes estadísticamente significativos en la formación del precio; el acceso aestaciones del Metro tiende a capitalizarse de forma no lineal, y tanto el ingreso delhogar como el agregado son variables económicamente significativas. La descompo-sición de precios revela que entre 68 a 71% del monto es explicado por determinantesrelacionados con los atributos de la propiedad, mientras que cerca de 68% del creci-miento observado entre 1990 y 2007 es consecuencia de determinantes macrofinan-cieros. Durante el periodo 2006-2007 la evolución de precios inmobiliarios no difierede manera significativa de la predicha por el modelo. Los resultados encontrados sonrobustos a estimaciones por tipo de vivienda y subperiodos muestrales.

  20. La calidad de los datos de mortalidad del Censo 2010 de Argentina

    Directory of Open Access Journals (Sweden)

    Nicolás Sacco

    2016-07-01

    Full Text Available Objetivo: evaluar las variables disponibles en el censo de población de 2010 para Argentina en lo que a mortalidad refiere. Métodos: Con base en métodos indirectos de estimación demográfica se ofrece una lectura de la calidad de estas estadísticas en comparación con censos previos y estadísticas vitales. Resultados: La comparación de las tasas de mortalidad infantil y adulta con las tasas calculadas a partir de los nacimientos y las defunciones permite dilucidar, en principio, que estos datos no revelan problemas serios de calidad o cobertura y que el nivel (y la tendencia indicado por las fuentes es ampliamente compatible. Discusión: a pesar de que los resultados parecen mostrar coherencia, la posibilidad de detectar y cuantificar los errores se mantiene como un punto ciego del artículo hasta tanto no se publique la totalidad de la información necesaria para realizar un examen cabal, dado el universo limitado de publicaciones por parte del Instituto Nacional de Estadística y Censos. Conclusiones: las estimaciones de población en cuanto a mortalidad son consistentes con los datos del censo previo de 2001 y con las series de nacimientos y muertes del período intercensal a nivel total del país.

  1. Introduction to Cultural Understanding

    DEFF Research Database (Denmark)

    Jensen, Iben

    En introduktion til kulturforståelse. Bogen introducerer i første del centrale begreber som kultur, interkulturel kommunikation, kulturel identitet, medier, diskrimination samt forholdet mellem det globale og det lokale. I bogens anden del gives en række eksempler på analyseredskaber til interkul...

  2. Introduction to software development

    OpenAIRE

    Pérez López, Josep Anton; Ribas Xirgo, Lluís

    2009-01-01

    El coneixement profund d'un llenguatge de programació parteix no solament de la comprensió del seu lèxic, de la seva sintaxi i de la seva semàntica, sinó que a més requereix la comprensió dels objectius que n'han motivat el desenvolupament. Així doncs, en aquesta unitat es repassa la història del llenguatge de programació C des del prisma de la programació dels computadors. Els programes descrits en un llenguatge de programació com C no els pot executar directament cap màquina. Per tant, és n...

  3. Introduction to surveillance studies

    CERN Document Server

    Petersen, JK

    2012-01-01

    Introduction & OverviewIntroduction Brief History of Surveillance Technologies & TechniquesOptical SurveillanceAerial Surveillance Audio Surveillance Radio-Wave SurveillanceGlobal Positioning Systems Sensors Computers & the Internet Data Cards Biochemical Surveillance Animal Surveillance Biometrics Genetics Practical ConsiderationsPrevalence of Surveillance Effectiveness of Surveillance Freedom & Privacy IssuesConstitutional Freedoms Privacy Safeguards & Intrusions ResourcesReferences Glossary Index

  4. Introduction to Part 3

    DEFF Research Database (Denmark)

    Petersen, Nils Holger

    2015-01-01

    A brief contextualising discussion of Western Music History and its relations to Theological Aesthetical Thought since Carolingian Times as an introduction to 3 music articles in Part 3 of the volume.......A brief contextualising discussion of Western Music History and its relations to Theological Aesthetical Thought since Carolingian Times as an introduction to 3 music articles in Part 3 of the volume....

  5. Environmental Psychology: An Introduction

    NARCIS (Netherlands)

    Steg, L.; Berg, van den A.E.; Groot, de J.I.M.

    2012-01-01

    Environmental Psychology: An Introduction offers a research-based introduction to the psychological relationship between humans and their built and natural environments and discusses how sustainable environments can be created to the benefit of both people and nature •Explores the environment's

  6. KARAGABI KMMODEL: MODELO DE REFERENCIA PARA LA INTRODUCCIÓN DE INICIATIVAS DE GESTIÓN DEL CONOCIMIENTO EN ORGANIZACIONES BASADAS EN CONOCIMIENTO KARAGABI KMMODEL: REFERENCE MODEL FOR THE INTRODUCTION OF KNOWLEDGE MANAGEMENT INITIATIVES IN KNOWLEDGE BASED ORGANIZATIONS

    Directory of Open Access Journals (Sweden)

    Alberto de J. González

    2009-08-01

    Full Text Available La inserción de las organizaciones en la economía del conocimiento demanda de ellas una reestructuración que les permita integrar y explotar el conocimiento en su operación convencional, y convertirlo en un verdadero activo estratégico. El desarrollo de nuevas competencias, estrategias, estructuras, procesos orientados a conocimiento y su gestión es fundamental para soportar las nuevas tendencias del mercado. Para responder a estas necesidades se deben desarrollar nuevas propuestas, metodologías, métodos, estándares para el diseño, evaluación y mejora de organizaciones orientadas a conocimiento. Este artículo presenta el modelo Karagabi KMModel cuyo objetivo es ser una guía de referencia para la construcción de organizaciones orientadas a conocimiento. Karagabi KMModel está integrado por una metodología de intervención que permite orientar el proceso de diseño de este tipo de organizaciones, una librería de modelos de conocimiento, que permiten representar conocimiento sobre distintos aspectos relevantes de la organización y una base de conocimiento de experiencias que permite la gestión de experiencias basada en casos de aplicación del mismo modelo. Se presentan también algunos ejemplos que han contribuido a conformar la base de conocimiento de experiencias, facilitando su aprovechamiento para trabajos futuros y el enriquecimiento del propio modelo.The inclusion of the organizations into the knowledge economy requires reorganization that allows them to integrate the knowledge in their conventional operation in order to convert it in a true strategic active. Developing new knowledge and knowledge management oriented to competences, strategies, structures, and processes is essential to support the new trends. To meet these needs, it is necessary to define new proposals, methodologies, methods and standards for the design, evaluation and improvement of knowledge-oriented organizations. This paper presents Karagabi KMModel

  7. La relación entre la capacidad de atencion dividida y la estimación prospectiva del tiempo

    Directory of Open Access Journals (Sweden)

    Susana Celeste Azzollini

    2004-01-01

    Full Text Available Se realizó una investigación cuyo objetivo fue determinar si la capacidad de atención dividida resultaba explicativa de la variabilidad de las estimaciones prospectivas del tiempo. Los modelos teóricos sobre dicha estimación postulan que los recursos atencionales de procesamiento están divididos entre un procesador temporal, que cuenta y almacena unidades temporales subjetivas (Subjective Temporal Units - STUs y otras actividades de procesamiento no temporal (Zakay, 1993. Se seleccionó una muestra de 36 estudiantes universitarios que fueron asignados al azar a cada una de las seis condiciones experimentales, determinadas por un diseño factorial 3 x 2, y sus factores básicos fueron: cantidad de tareas y niveles de complejidad del material. Se confeccionaron materiales para las diferentes tareas y otros con el fin de evaluar las aptitudes mnémicas y la capacidad de atención dividida. Se solicitó a los sujetos que mientras realizaban las tareas, detuvieran un cronómetro cuando consideraran que había pasado un período de tiempo predeterminado. La estimación del tiempo se calculó por la diferencia en segundos entre el tiempo real y el tiempo estimado. Los datos se procesaron con análisis de correlación, discriminante y factorial de variancia. Los resultados obtenidos indican que la capacidad de atención dividida se correlaciona con la estimación temporal prospectiva y además, la capacidad de atención dividida resulta un buen predictor de la capacidad estimativa de los sujetos, especialmente de los sobre-estimadores. Las diferencias en las aptitudes mnémicas no explicaron la variabilidad de las estimaciones prospectivas.

  8. Estimativas da cobertura de mamografia segundo inquéritos de saúde no Brasil Estimaciones de la cobertura de mamografía según encuestas de salud en Brasil Estimates of mammography coverage according to health surveys in Brazil

    Directory of Open Access Journals (Sweden)

    Francisco Viacava

    2009-11-01

    fixa.OBJETIVO: Encuestas poblacionales constituyen herramienta fundamental para monitorear la cobertura de mamografía y los factores asociados a su realización. En pesquisas basadas en la población residente en domicilios con teléfono las estimaciones tienden a ser superestimadas. El estudio tuvo por objetivo estimar la cobertura de mamografía con base en pesquisas de base poblacional. MÉTODOS: A partir de las coberturas por mamografía en mujeres de 50 a 69 años, con y sin teléfono fijo, observadas en la Pesquisa Nacional por Muestra de Domicilios (PNAD 2003, se calcularon las razones entre ellas y el respectivo coeficiente de variación. La razón de cobertura fue multiplicada por la cobertura estimada por el Sistema de Vigilancia de Factores de Riesgo y Protección para Enfermedades Crónicas por Pesquisa Telefónica (VIGITEL, permitiendo estimar la cobertura entre mujeres sin teléfono en 2007. Estas estimaciones fueron aplicadas a la población de mujeres, con y sin teléfono, obtenidas a partir de la PNAD 2006, obteniéndose así las estimaciones finales para las capitales. RESULTADOS: En 2007, para el conjunto de las capitales, se estimó la cobertura de mamografía en aproximadamente 70%, variando de 41,2% en Porto Velho (Norte de Brasil a 82,2% en Florianópolis (Sur. En 17 municipios la cobertura fue mayor que 60%; en ocho, de 50%-60%; y en dos, la cobertura fue inferior a 50%. En términos absolutos, la diferencia entre las coberturas del VIGITEL y las estimadas fue de 6,5% para el conjunto de los municipios, variando de 3,4% en Sao Paulo (Sureste a 24,2% en Joao Pessoa (Noreste. CONCLUSIONES: Las diferencias en las magnitudes de las estimativas de la cobertura de mamografía por pesquisas poblacionales son en gran parte reflejo de los diseños de los estudios. En el caso específico de la mamografía, seria más apropiado estimar su cobertura combinando datos del VIGITEL con aquellos de otras pesquisas, que incluyan informaciones sobre mujeres con y

  9. Peces del Noroeste del Ecuador

    OpenAIRE

    Barriga, Ramiro

    1994-01-01

    La ictiofauna del occidente del Ecuador es poco conocida. Los peces del noroccidente son diferentes a los del suroccidente del Ecuador. 34 familias y 82 especies fueron colectadas que equivale al 11 % de las especies de peces continentales registradas en el Ecuador. Icteogeográficamente se sabe que la costa ecuatoriana posee dos provincias: la del Pacifico Norte y la del Guayas, se determinó que el límite de las dos provincias es el río Santiago ya que las especies del mencionado río so...

  10. Introduction to renewable energy

    CERN Document Server

    Nelson, Vaughn C

    2011-01-01

    IntroductionEnergy and SocietyTypes of EnergyRenewable EnergyAdvantages/DisadvantagesEconomicsGlobal WarmingOrder of Magnitude EstimatesGrowth (Exponential)SolutionsEnergyIntroductionDefinition of Energy and PowerHeatThermodynamicsEnergy Dilemma in Light of the Laws of ThermodynamicsUse of Fossil FuelsNuclearFinite ResourceSummarySunSolar PowerElectromagnetic SpectrumEnergy Balance of the EarthEarth-Sun MotionInsolationSolar ResourceGreenhouse EffectHeat Transfer and StorageIntroductionConductionConvectionRadiationThermal MassSeasonal Heating or CoolingThermal ComfortSolar Heating and CoolingB

  11. Introduction to quantum mechanics

    CERN Document Server

    Phillips, A C

    2003-01-01

    Introduction to Quantum Mechanics is an introduction to the power and elegance of quantum mechanics. Assuming little in the way of prior knowledge, quantum concepts are carefully and precisely presented, and explored through numerous applications and problems. Some of the more challenging aspects that are essential for a modern appreciation of the subject have been included, but are introduced and developed in the simplest way possible.Undergraduates taking a first course on quantum mechanics will find this text an invaluable introduction to the field and help prepare them for more adv

  12. Consanguinidad en españoles y castas de ciudad y campaña de Córdoba a fines del siglo XVIII

    Directory of Open Access Journals (Sweden)

    Küffer, Claudio

    2007-01-01

    Full Text Available A partir de datos del censo de 1795 para la provincia de Córdoba, se realizaron estimaciones de consanguinidad mediante isonimia para la Ciudad y la Campaña, tanto en “españoles” como en “castas”. Fueron calculados, en cada caso, el componente aleatorio (Fr, el no aleatorio (Fn, y total (Ft. Se encontraron, en ambos grupos etno-sociales, valores mayores de los citados indicadores en la Campaña que en la Ciudad de Córdoba. En Ciudad, el comportamiento de los dos grupos resultó idéntico, mientras que en Campaña estuvo más diferenciado, con mayor consanguinidad entre los españoles. Se concluyó que la Ciudad, pese al comportamiento más selectivo tradicionalmente atribuido a los españoles, presentaba características similares para ambos grupos: una población abierta y sin preferencias por elección de cónyuge isónimo. En Campaña, las estimaciones fueron de mayor magnitud para los españoles, especialmente el Fn, aunque el escaso valor de éste no sugiere una tendencia muy marcada al casamiento entre parientes. En suma, se encontró mayor diferencia dentro de cada grupo etno-social entre las dos regiones consideradas que entre ellos para la misma región.

  13. Introduction to Pulmonary Fibrosis

    Science.gov (United States)

    ... page: Introduction to Pulmonary Fibrosis What Is Pulmonary Fibrosis? Pulmonary fibrosis is a disease where there is scarring ... of pulmonary fibrosis. Learn more How Is Pulmonary Fibrosis Diagnosed? Pulmonary fibrosis can be difficult to diagnose, so it ...

  14. MOOC Introduction to Dutch

    NARCIS (Netherlands)

    den Hollander, Franciscus; Piersma, Kristien

    Interview met Margriet Hidding, Birgit Lijmbach en Jeroen van Engen, medewerkers van het Talencentrum en de makers van de Massive Open Online Course (MOOC) Introduction to Dutch over het grote succes van deze cursus

  15. Radiation Protection: introduction

    International Nuclear Information System (INIS)

    Loos, M.

    2005-01-01

    The abstract gives an overview and introduction to the activities of SCK-CEN's Radiation Protection department. Main strategic developments and achievements in the field of life sciences, policy supports and medical applications are summarised

  16. Introduction: Ideologies of Youth

    African Journals Online (AJOL)

    seriane.camara

    2011-12-01

    Dec 1, 2011 ... target all age groups in their youth-oriented programmes. If the donor- ... van Dijk, de Bruijn, Cardoso, Butter: Introduction – Ideologies of Youth ...... Toward a Theory of Vital Conjunctures', American Anthropologist, vol. 104,.

  17. Complex Systems: An Introduction

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 14; Issue 9. Complex Systems: An Introduction - Anthropic Principle, Terrestrial Complexity, Complex Materials. V K Wadhawan. General Article Volume 14 Issue 9 September 2009 pp 894-906 ...

  18. Introduction: perspectives on Porter

    NARCIS (Netherlands)

    F.A.J. van den Bosch (Frans)

    1997-01-01

    textabstractIntroduction. Relevance of Strategy research: focus on Michael Porter's contributions Strategy is a fascinating field of enquiry, both for managers looking for a sustainable competitive advantage and for academic researchers looking for the reasons behind superior firm performance.

  19. Introduction to graph theory

    CERN Document Server

    Wilson, Robin J

    1985-01-01

    Graph Theory has recently emerged as a subject in its own right, as well as being an important mathematical tool in such diverse subjects as operational research, chemistry, sociology and genetics. This book provides a comprehensive introduction to the subject.

  20. 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.

  1. General introduction to glucosinolates

    DEFF Research Database (Denmark)

    Halkier, Barbara Ann

    2016-01-01

    will be presented a general introduction to glucosinolates ranging from the evolution of glucosinolates to the many roles glucosinolates have for humans as well as an overview of the current knowledge on the orchestration of the glucosinolate biosynthetic pathway. The latter includes an introduction to the genes...... to the plasma membrane. Examples of how the knowledge gained from basic research has been translated into applied glucosinolate research through pathway and transport engineering will be presented....

  2. Stochastic processes an introduction

    CERN Document Server

    Jones, Peter Watts

    2009-01-01

    Some Background on ProbabilityIntroduction Probability Conditional probability and independence Discrete random variables Continuous random variables Mean and variance Some standard discrete probability distributions Some standard continuous probability distributions Generating functions Conditional expectationSome Gambling ProblemsGambler's ruin Probability of ruin Some numerical simulations Duration of the game Some variations of gambler's ruinRandom WalksIntroduction Unrestricted random walks The probability distribution after n steps First returns of the symmetric random walkMarkov ChainsS

  3. Introduction to elementary particles

    CERN Document Server

    Griffiths, David J

    2008-01-01

    This is the first quantitative treatment of elementary particle theory that is accessible to undergraduates. Using a lively, informal writing style, the author strikes a balance between quantitative rigor and intuitive understanding. The first chapter provides a detailed historical introduction to the subject. Subsequent chapters offer a consistent and modern presentation, covering the quark model, Feynman diagrams, quantum electrodynamics, and gauge theories. A clear introduction to the Feynman rules, using a simple model, helps readers learn the calculational techniques without the complicat

  4. Introduction to Geostatistics

    Science.gov (United States)

    Kitanidis, P. K.

    1997-05-01

    Introduction to Geostatistics presents practical techniques for engineers and earth scientists who routinely encounter interpolation and estimation problems when analyzing data from field observations. Requiring no background in statistics, and with a unique approach that synthesizes classic and geostatistical methods, this book offers linear estimation methods for practitioners and advanced students. Well illustrated with exercises and worked examples, Introduction to Geostatistics is designed for graduate-level courses in earth sciences and environmental engineering.

  5. Introduction to remote sensing

    CERN Document Server

    Cracknell, Arthur P

    2007-01-01

    Addressing the need for updated information in remote sensing, Introduction to Remote Sensing, Second Edition provides a full and authoritative introduction for scientists who need to know the scope, potential, and limitations in the field. The authors discuss the physical principles of common remote sensing systems and examine the processing, interpretation, and applications of data. This new edition features updated and expanded material, including greater coverage of applications from across earth, environmental, atmospheric, and oceanographic sciences. Illustrated with remotely sensed colo

  6. Plasma physics an introduction

    CERN Document Server

    Fitzpatrick, Richard

    2014-01-01

    Plasma Physics: An Introduction is based on a series of university course lectures by a leading name in the field, and thoroughly covers the physics of the fourth state of matter. This book looks at non-relativistic, fully ionized, nondegenerate, quasi-neutral, and weakly coupled plasma. Intended for the student market, the text provides a concise and cohesive introduction to plasma physics theory, and offers a solid foundation for students wishing to take higher level courses in plasma physics.

  7. Borosonic inspection and remaining useful operational life estimation of steam turbine rotors; Inspeccion borosonica y estimacion de vida remanente de rotores de turbinas de vapor

    Energy Technology Data Exchange (ETDEWEB)

    Carnero P, Jose A; Dorantes G, Oscar; Munoz Q, Rodolfo; Serrano R, Luis E. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2004-07-01

    The turbo-generators used in the electric power generation frequently go through transitory operations (start ups, shut downs or power changes). Such actions cause that certain critical components of the turbines, such as rotors and casings, are put under cycles of repetitive stresses, which consume its useful life. The frequency whereupon these transitory thermal cycles happen result in the presence of high thermo-mechanical stresses that produce fatigue (damage) in the rotor material. With time, at the increase of the material fatigue, fissures form that can inclusively lead to severe, catastrophic faults. The borosonic inspection consists in introducing and positioning an automatic probe in the central drill of the rotor, this allows the non-destructive inspection with longitudinal ultrasonic beam, ultrasonic cross-sectional and ultrasonic superficial. This way, it is possible to detect and locate geometric discontinuities (superficial and volumetric), in at least 100 mm of depth from the drill surface in its entire periphery and throughout the rotor length. [Spanish] Los turbogeneradores empleados en la generacion de energia electrica con frecuencia realizan operaciones transitorias (arranques, paros o cambios de potencia). Acciones tales, provocan que ciertos componentes criticos de las turbinas, como los rotores y carcasas, sean sometidos a ciclos de esfuerzos repetitivos, lo que consume su vida util. La frecuencia con que ocurren estos ciclos termicos transitorios da como resultado la presencia de altos esfuerzos termomecanicos que producen una fatiga (dano) en el material del rotor. Con el tiempo, al incrementarse la fatiga del material, se forman fisuras que pueden conducir a fallas severas, catastroficas inclusive. La inspeccion borosonica consiste en introducir y posicionar una sonda automatica en el barreno central del rotor, ello permite la inspeccion no destructiva con haz ultrasonico longitudinal, haz ultrasonico transversal y haz ultrasonico

  8. Variación espacio-temporal del nitrógeno y fósforo en el embalse del Neusa

    Directory of Open Access Journals (Sweden)

    Juan Pablo Niño Garcia

    2003-01-01

    Full Text Available El Embalse del Neusa es un cuerpo de agua oligo-mesotrófico ubicado en la cordillera oriental de los Andes colombianos, utilizado en la regulación de caudales del río Neusa y en la distribución de agua para consumo. Allí se analizaron la variación espacial del nitrógeno y el fósforo y sus tasas de sedimentación, se indagó sobre su relación con la distribución de Egeria densa en el embalse. Para hacer una aproximación a la incidencia de las comunidades litorales sobre la variación del nitrógeno y fósforo se hicieron estimaciones de los porcentajes de nitrógeno y fósforo contenidos tanto en la biomasa como en la necromasa macrofíticas y se estudió su variación en el tiempo durante los procesos de descomposición in situ. En este trabajo se encontró que las diferencias temporales y espaciales en los contenidos de nitrógeno y fósforo en la columna de agua respondieron a las fluctuaciones estacionales de las afluencias y cambios de nivel del agua, así como a la distribución espacial de E. densa;. esta última se relacionó con el aumento en las tasas de sedimentación del seston, nitrógeno y fósforo. Durante la descomposición estos dos nutrientes se perdieron rápidamente en los primeros días, volviéndose limitantes para los microorganismos descomponedores en fases posteriores del proceso. Estos recurren a nutrientes disueltos, escasos en la columna de agua, que en consecuencia pueden ser limitantes para los procesos de descomposició.

  9. Simulación del balance anual en sistemas de pastoreo bovino

    Directory of Open Access Journals (Sweden)

    Verena Torres Cárdenas

    2002-07-01

    Full Text Available Este estudio parte de una abstracción de los sistemas de pastoreo vacuno en Cuba en cuanto a la dinámica del N, P y K, determinando los procesos relevantes para el modelo de simulación. Para  tales procesos se define cómo estimar la cuantía de su contribución como fuente de entrada o salida de los nutrientes por tres posibles métodos: modelos de ajustes, procedimientos descriptivos (fórmulas de cálculos o con valores informados en la literatura. Las componentes del modelo de simulación fueron: estimación del N, P y K aportado por  bostas,  orina,  hojarasca de los árboles,  hojarasca de los pastos, removilización y contenido en la suplementación utilizada.  Estimación del N aportado por la lluvia  y  volatilizado por bostas y orina.  Estimación del N, P y K en la leche producida,  en la ganancia de peso vivo, en los animales que salen del sistema y el  extraído por los pastos. El soporte informático del modelo se programó en Borland Delphi versión 4.0 utilizando el método de Prototipo Orientado a Objeto y el mismo garantiza la rapidez, exactitud y precisión en las estimaciones que se hacen, lo que se comprobó mediante una adecuada estrategia de validación efectuada hasta la introducción del software en la investigación, la docencia y la producción con resultados muy positivos.

  10. Determinantes del consumo de energía eléctrica residencial de la Zona Metropolitana de Monterrey, Nuevo León, en México.

    Directory of Open Access Journals (Sweden)

    Dionicio Morales Ramírez

    2013-03-01

    Full Text Available El objetivo del trabajo consiste en estudiar la evolución del consumo agregado de energía eléctrica residencial en la Zona Metropolitana de Monterrey, Nuevo León, México. Ello, debido a que dicha metrópoli ha experimentado niveles de consumo muy por encima de la media nacional. En este sentido, la idea principal consiste en cuantificar el impacto generado por el crecimiento de los usuarios, la sensibilidad del consumo ante variaciones en el precio del servicio y de un indicador nacional de la actividad económica como medida proxy del ingreso de la zona ante la ausencia de un indicador regional. Para ello, se estima una función de demanda al estilo Cobb-Douglas con series de tiempo de 1993 al 2010 en frecuencia mensual y el enfoque de cointegración de Engel-Granger. Las estimaciones realizadas nos indican que un incremento porcentual del número de hogares incrementa en 0.61 por ciento el consumo. De la misma forma, un incremento porcentual el ingreso incrementa en 0.88 por ciento el consumo. En tanto que incrementos en el precio del servicio reducen la demanda en 0.63 por ciento en el largo plazo.

  11. Glow Discharge Emission Spectrometry (GDOES): Theoretical Introduction, General Aspects, and its Applications within the Framework of the Technofusion Programs; Glow Discharge Emission Spectrometry (GDOES): Introduccion Teorica, Aspectos Generales y Aplicabilidad en el Marco del Programa Technofusion

    Energy Technology Data Exchange (ETDEWEB)

    Martin-Rojo, A. B.; Gonzalez, M.; Tabares, F. L.

    2013-02-01

    The demand by material research groups for the direct composition analysis of solids is increasing as a solution to the time-consuming problems and errors inherent to classical chemical analysis, where the attack and solubilisation of the starting material is mandatory, often producing the introduction of impurities and component loss of the initial matrix. From the existing solid analysis techniques the present work is focused on the Glow Discharge Emission Spectrometry (GDOES), a fast, simply-executed technique, for which quantitative, high resolution depth profile determination of any element in the periodic table can be performed with a high sensibility and detection limit. The theoretical concepts, the required instrumentation and the basic analytic applications are revised, giving especial attention to the issues related to the analysis of materials for fusion applications. Finally, a comparative study with a more advanced spectroscopic technique (Secondary Ion Mass Spectrometry (SIMS)) is performed and the concomitance of both techniques to correct limitations such as the spatial resolution and the quantification of the analysis, important factors that are required in the chemical analysis of the complex materials used in Fusion, is addressed. (Author) 41 refs.

  12. Introducción del sistema europeo de transferencia de créditos (ECTS en la Facultad de Medicina de La Laguna Introduction of the European Credit Transfer System (ECTS in the medical school of the University of La Laguna

    Directory of Open Access Journals (Sweden)

    Eduardo Doménech Martínez

    2007-03-01

    con la prioridad de competencias de la CND para 9/9 de las generales y 4/17 de las específicas. Conclusiones: La introducción experimental del ECTS mejoró el rendimiento académico, la formación práctica y el autoaprendizaje de los alumnos. La experiencia fue satisfactoria para profesores y alumnos. La estimación de la carga de trabajo de los alumnos fue subestimada.Introduction: To comply with the requirements of European convergence, faculties of medicine must modify their curricula and incorporate the European Credit Transfer System (ECTS before 2010. Objectives: To test the introduction of ECTS in the 2nd term of the 5th year medicine course and the appropriately modified teaching methodology. Study design: Theoretical and practical programs were adapted; academic objectives and student evaluation system were established for the following subjects: medical pathology of blood and haematopoiesis, infectious diseases and endocrine system and nutrition, paediatrics and surgical pathology of the face, neck, breast and endocrine glands. Students were surveyed during the term, using a 5-point Likert-type scale. We recorded student priorities for general and specific parameters, and the results were analyzed using non-parametric tests. Results: Thirty-seven credits were converted into 29.5 ECTS credits, representing 736.5 student working hours. The theory program was reduced from 186 to 134 lectures (a reduction of 28%. Students presented 58 tutor-supervised clinical cases. The teaching staff considered that learning of theory was similar to previous years (66.6% but that practical learning improved (73.3%. Most students (73.2% thought the program should be improved, especially the examination system, and the workload reduced. Students reported a statistically significant improvement in practical teaching and in their capacity to present clinical cases. Academic performance was significantly higher than that of the 5th year students the previous year. Students

  13. Determinación del tamaño racional del bloque para la estimación de los recursos minerales en el yacimiento “Mariel”

    Directory of Open Access Journals (Sweden)

    Orestes Gómez-González

    2011-12-01

    Full Text Available La calidad de la estimación de recursos minerales es uno de los temas más importantes en la industria geológica-minera actual. El desarrollo de los sistemas automatizados en este campo ha permitido un incremento en la calidad de las estimaciones en diferentes tipos de yacimientos, pero aún existen elementos de carácter subjetivo que influyen directamente en la precisión y exactitud de los cálculos, uno de ellos es el tamaño del bloque de estimación. Para la selección de éste se han utilizado fundamentalmente criterios de carácter económico y minero. En este trabajo se demuestra la influencia del tamaño del bloque de estimación en la precisión y exactitud de los recursos estimados, utilizando procedimientos conjuntos de estimación y simulación geoestadística. El procedimiento se aplica en el yacimiento Mariel de materia prima para cemento y la metodología propuesta puede ser aplicable a otros casos de estudio.

  14. Distribución a profundidad del carbono orgánico en los suelos de México

    Directory of Open Access Journals (Sweden)

    Fernando Paz

    2016-07-01

    Full Text Available La caracterización de la distribución vertical del carbono orgánico en los suelos (COS en México es una tarea importante, dada la evidencia acumulada que muestra que el COS puede ser desestabilizado por diferentes mecanismos al incrementar la profundidad a la que se encuentra en el perfil. Con el objetivo de modelar la variación del COS con la profundidad, se analizó una base de datos de COS de perfiles de suelos distribuidos en todo México (base de datos INEGI-COLPOS. Esta base se depuró usando diferentes restricciones congruentes con el objetivo de desarrollar modelos matemáticos de la distribución del carbono con la profundidad (z. Los resultados de los ajustes estadísticos mostraron que modelo logarítmico, COS(z=a-b ln(z, resultó adecuado para lo planteado, por lo que se procedió a su síntesis. Se usó la propiedad de que un conjunto de rectas que se intersectan en un punto común, sus parámetros generan una línea recta. Con base en ella se desarrolló un esquema para estimar el carbono orgánico inerte (COI del espacio b-a del modelo logarítmico. Adicionalmente, para realizar estimaciones del COS a profundidad (hasta su valor máximo usando sólo el valor del COS de 0 a 30 cm, se desarrolló un método para realizar estas estimaciones a partir de parámetros asociados a los ecosistemas y tipos de vegetación. Los resultados de los ejercicios realizados para estimar el COI y el carbono orgánico a profundidad en los suelo usando sólo el COS 30 cm muestran ser adecuados y pueden ser implementados en forma operativa.

  15. Evaluación del impacto asistencial de la puesta en funcionamiento de una unidad funcional de artroplastia de rodilla Evaluation of the impact of the introduction of a functional knee arthroplasty unit

    Directory of Open Access Journals (Sweden)

    Marta Riu

    2009-10-01

    Full Text Available Objetivos: Evaluar el impacto sobre el consumo de recursos hospitalarios, la calidad y los costes directos del proceso asistencial, de la puesta en funcionamiento de una unidad funcional de artroplastia de rodilla en el Hospital de l'Esperança (Barcelona. Métodos: Estudio retrospectivo basado en dos cortes transversales, el primero con 317 pacientes intervenidos en 2004, antes de la implantación de la unidad funcional de artroplastia de rodilla, y el segundo con 624 pacientes intervenidos en 2005. Se recogieron datos de proceso, complicaciones y costes. Resultados: La estancia media disminuyó en 9 días (pObjectives: To evaluate the impact of a functional knee arthroplasty unit in Hospital de l'Esperança (Barcelona on resource consumption, quality indicators and the direct costs of the healthcare process. Method: We performed a retrospective study based on two cross-sections: the first in 317 patients who underwent surgery in 2004 before the implementation of the functional knee arthroplasty unit and the second in 624 patients who underwent surgery in 2005. Data related to the process, complications and costs were collected. Results: The mean length of hospital stay decreased by 9 days (p <0.001. The number of patients requiring convalescence after the intervention increased by 9.5% (p <0.001. Overall, the total cost of the healthcare process decreased by 16%, from 9,031.34 to 7,591.54 € (p <0.001. This cost reduction was due to decreases in the length of hospital stay (2,946.0 vs. 1,616.8 €, surgery costs (2,156.7 vs. 1,776.7 € and prosthesis costs (2,730.5 vs. 2,678.1 €. Conclusions: The implementation of the functional knee arthroplasty unit reduced overall costs and length of hospital stay and substantially increased activity while maintaining a similar complication rate.

  16. Biophysics an introduction

    CERN Document Server

    Cotteril, Rodney

    2002-01-01

    Biophysics: An Introduction, is a concise balanced introduction to this subject. Written in an accessible and readable style, the book takes a fresh, modern approach with the author successfully combining key concepts and theory with relevant applications and examples drawn from the field as a whole. Beginning with a brief introduction to the origins of biophysics, the book takes the reader through successive levels of complexity, from atoms to molecules, structures, systems and ultimately to the behaviour of organisms. The book also includes extensive coverage of biopolymers, biomembranes, biological energy, and nervous systems. The text not only explores basic ideas, but also discusses recent developments, such as protein folding, DNA/RNA conformations, molecular motors, optical tweezers and the biological origins of consciousness and intelligence.

  17. Protocolo estandarizado para el seguimiento poblacional del pavón, Oreophasis derbianus: propuesta de métodos de campo y analíticos

    Directory of Open Access Journals (Sweden)

    Fernando González-García

    2017-04-01

    Full Text Available La estimación robusta del tamaño poblacional de especies de fauna silvestre es un requisito fundamental en estudios ecológicos y en el diseño e implementación de estrategias de conservación. Sin embargo, en varios casos, estas estimaciones carecen de exactitud, precisión, representatividad y comparabilidad. Esto ha ocasionado que la información generada para las poblaciones de una determinada especie sea difícilmente generalizable y que su aplicación sea limitada. Éste es el caso del pavón, Oreophasis derbianus, un ave endémica de Mesoamérica y en peligro de extinción. En este trabajo presentamos una propuesta de protocolo de muestreo en campo y métodos analíticos estandarizados para el estudio poblacional de esta especie. La propuesta está basada en nuestra experiencia en el estudio de la especie y en la aplicación de la teoría del muestreo de distancias. El propósito de este protocolo estandarizado es generar datos de campo de calidad para obtener estimaciones robustas de la abundancia poblacional de O. derbianus. Este protocolo lo desarrollamos y evaluamos principalmente en la Reserva de la Biosfera El Triunfo, en Chia­pas, México, pero también fue replicado en otras tres localidades en México y Guatemala. Su desarrollo y evaluación incluyó muestreos mensuales en campo durante casi diez años y la impartición de talleres de capacitación teórico-prácticos a personal de campo para la adecuada implementación de este protocolo. Como resultado de esta experiencia, definimos una serie de li­neamientos básicos y factibles que proponemos sea un estándar como métodos de muestreo y analíticos de las poblaciones de O. derbianus para asegurar la calidad y comparabilidad de los datos generados en campo. Finalmente, presentamos estimaciones de la densidad poblacional de O. derbianus en las cuatro localidades estudiadas y discutimos el significado de su variación espacial y temporal en el contexto de esta propuesta.

  18. Introduction to magnetochemistry

    CERN Document Server

    Earnshaw, Alan

    2013-01-01

    Introduction to Magnetochemistry provides an introduction to the more important aspects of magnetochemistry. The measurement of magnetic moment has been one of the most consistently useful to coordination chemists. For teaching purposes it provides a simple method of illustrating the ideas of electronic structure, and in research it can provide fundamental information about the bonding and stereochemistry of complexes. The book contains six chapters covering topics such as free atoms and ions, transition metal complexes, crystal field theory, second and third row transition metal complexes, a

  19. An Introduction to Malware

    DEFF Research Database (Denmark)

    Sharp, Robin

    2007-01-01

    These notes intended for use in DTU course 02233 on Network Security give a short introduction to the topic of malware. The most important types of malware are described, together with their basic principles of operation and dissemination, and defences against malware are discussed.......These notes intended for use in DTU course 02233 on Network Security give a short introduction to the topic of malware. The most important types of malware are described, together with their basic principles of operation and dissemination, and defences against malware are discussed....

  20. An Introduction to Malware

    DEFF Research Database (Denmark)

    Sharp, Robin

    2017-01-01

    These notes, intended for use in DTU course 02233 on Network Security, give a short introduction to the topic of malware. The most important types of malware are described, together with their basic principles of operation and dissemination, and defenses against malware are discussed.......These notes, intended for use in DTU course 02233 on Network Security, give a short introduction to the topic of malware. The most important types of malware are described, together with their basic principles of operation and dissemination, and defenses against malware are discussed....

  1. Introduction to adaptive arrays

    CERN Document Server

    Monzingo, Bob; Haupt, Randy

    2011-01-01

    This second edition is an extensive modernization of the bestselling introduction to the subject of adaptive array sensor systems. With the number of applications of adaptive array sensor systems growing each year, this look at the principles and fundamental techniques that are critical to these systems is more important than ever before. Introduction to Adaptive Arrays, 2nd Edition is organized as a tutorial, taking the reader by the hand and leading them through the maze of jargon that often surrounds this highly technical subject. It is easy to read and easy to follow as fundamental concept

  2. Introduction to quantum groups

    CERN Document Server

    Chaichian, Masud

    1996-01-01

    In the past decade there has been an extemely rapid growth in the interest and development of quantum group theory.This book provides students and researchers with a practical introduction to the principal ideas of quantum groups theory and its applications to quantum mechanical and modern field theory problems. It begins with a review of, and introduction to, the mathematical aspects of quantum deformation of classical groups, Lie algebras and related objects (algebras of functions on spaces, differential and integral calculi). In the subsequent chapters the richness of mathematical structure

  3. Applied energy an introduction

    CERN Document Server

    Abdullah, Mohammad Omar

    2012-01-01

    Introduction to Applied EnergyGeneral IntroductionEnergy and Power BasicsEnergy EquationEnergy Generation SystemsEnergy Storage and MethodsEnergy Efficiencies and LossesEnergy industry and Energy Applications in Small -Medium Enterprises (SME) industriesEnergy IndustryEnergy-Intensive industryEnergy Applications in SME Energy industriesEnergy Sources and SupplyEnergy SourcesEnergy Supply and Energy DemandEnergy Flow Visualization and Sankey DiagramEnergy Management and AnalysisEnergy AuditsEnergy Use and Fuel Consumption StudyEnergy Life-Cycle AnalysisEnergy and EnvironmentEnergy Pollutants, S

  4. Introduction to nonimaging optics

    CERN Document Server

    Chaves, Julio

    2015-01-01

    Introduction to Nonimaging Optics covers the theoretical foundations and design methods of nonimaging optics, as well as key concepts from related fields. This fully updated, revised, and expanded Second Edition: Features a new and intuitive introduction with a basic description of the advantages of nonimaging opticsAdds new chapters on wavefronts for a prescribed output (irradiance or intensity), infinitesimal étendue optics (generalization of the aplanatic optics), and Köhler optics and color mixingIncorporates new material on the simultaneous multiple surface (SMS) design method in 3-D, int

  5. Introduction to fuzzy systems

    CERN Document Server

    Chen, Guanrong

    2005-01-01

    Introduction to Fuzzy Systems provides students with a self-contained introduction that requires no preliminary knowledge of fuzzy mathematics and fuzzy control systems theory. Simplified and readily accessible, it encourages both classroom and self-directed learners to build a solid foundation in fuzzy systems. After introducing the subject, the authors move directly into presenting real-world applications of fuzzy logic, revealing its practical flavor. This practicality is then followed by basic fuzzy systems theory. The book also offers a tutorial on fuzzy control theory, based mainly on th

  6. Introduction to information processing

    CERN Document Server

    Dietel, Harvey M

    2014-01-01

    An Introduction to Information Processing provides an informal introduction to the computer field. This book introduces computer hardware, which is the actual computing equipment.Organized into three parts encompassing 12 chapters, this book begins with an overview of the evolution of personal computing and includes detailed case studies on two of the most essential personal computers for the 1980s, namely, the IBM Personal Computer and Apple's Macintosh. This text then traces the evolution of modern computing systems from the earliest mechanical calculating devices to microchips. Other chapte

  7. Game theory an introduction

    CERN Document Server

    Barron, E N

    2013-01-01

    An exciting new edition of the popular introduction to game theory and its applications The thoroughly expanded Second Edition presents a unique, hands-on approach to game theory. While most books on the subject are too abstract or too basic for mathematicians, Game Theory: An Introduction, Second Edition offers a blend of theory and applications, allowing readers to use theory and software to create and analyze real-world decision-making models. With a rigorous, yet accessible, treatment of mathematics, the book focuses on results that can be used to

  8. Acoustics an introduction

    CERN Document Server

    Kuttruff, Heinrich

    2006-01-01

    This definitive textbook provides students with a comprehensive introduction to acoustics. Beginning with the basic physical ideas, Acoustics balances the fundamentals with engineering aspects, applications and electroacoustics, also covering music, speech and the properties of human hearing. The concepts of acoustics are exposed and applied in:room acousticssound insulation in buildingsnoise controlunderwater sound and ultrasoundScientifically thorough, but with mathematics kept to a minimum, Acoustics is the perfect introduction to acoustics for students at any level of mechanical, electrical or civil engineering courses and an accessible resource for architects, musicians or sound engineers requiring a technical understanding of acoustics and their applications.

  9. Introduction to nuclear reactions

    International Nuclear Information System (INIS)

    Satchler, G.R.

    1980-01-01

    This introduction to nuclear reaction phenomena is aimed primarily but not exclusively at readers at the undergraduate student level. An overview of the subject is presented in the first two chapters entitled - Some background information and Introduction to nuclear reactions. The third chapter reviews scattering theory with emphasis on the underlying physical ideas and also provides schematic entrees to the more advanced topics. The physical models which have been developed to account for the various aspects of nuclear phenomena are described in more detail in chapter 4. References and exercises are appended to each chapter. (U.K.)

  10. Introduction to the Project

    DEFF Research Database (Denmark)

    Kuhn, Johan M.; Malchow-Møller, Nikolaj; Sørensen, Anders

    In this note a short introduction to the project “Employment Effects of Entrepreneurs” is presented. First, we describe the purpose of the project; second, we present the background; third, we briefly describe the three papers that constitute the output of the project, and fourth, we discuss two ...... important qualifications for the understanding of the contributions and results established in the project.......In this note a short introduction to the project “Employment Effects of Entrepreneurs” is presented. First, we describe the purpose of the project; second, we present the background; third, we briefly describe the three papers that constitute the output of the project, and fourth, we discuss two...

  11. Introduction to UAV systems

    CERN Document Server

    Fahlstrom, Paul

    2012-01-01

    Unmanned aerial vehicles (UAVs) have been widely adopted in the military world over the last decade and the success of these military applications is increasingly driving efforts to establish unmanned aircraft in non-military roles. Introduction to UAV Systems, 4th edition provides a comprehensive introduction to all of the elements of a complete Unmanned Aircraft System (UAS). It addresses the air vehicle, mission planning and control, several types of mission payloads, data links and how they interact with mission performance, and launch and recovery concepts. This

  12. Fall Protection Introduction, #33462

    Energy Technology Data Exchange (ETDEWEB)

    Chochoms, Michael [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-06-23

    The proper use of fall prevention and fall protection controls can reduce the risk of deaths and injuries caused by falls. This course, Fall Protection Introduction (#33462), is designed as an introduction to various types of recognized fall prevention and fall protection systems at Los Alamos National Laboratory (LANL), including guardrail systems, safety net systems, fall restraint systems, and fall arrest systems. Special emphasis is given to the components, inspection, care, and storage of personal fall arrest systems (PFASs). This course also presents controls for falling object hazards and emergency planning considerations for persons who have fallen.

  13. Introduction to plasma dynamics

    CERN Document Server

    Morozov, A I

    2013-01-01

    As the twenty-first century progresses, plasma technology will play an increasing role in our lives, providing new sources of energy, ion-plasma processing of materials, wave electromagnetic radiation sources, space plasma thrusters, and more. Studies of the plasma state of matter not only accelerate technological developments but also improve the understanding of natural phenomena. Beginning with an introduction to the characteristics and types of plasmas, Introduction to Plasma Dynamics covers the basic models of classical diffuse plasmas used to describe such phenomena as linear and shock w

  14. Impacto de la introducción de la vacuna contra el rotavirus en la hospitalización por gastroenteritis aguda grave en el Hospital del Niño de la Ciudad de Panamá Impact of rotavirus vaccine introduction on hospital admissions for severe acute gastroenteritis at the Children's Hospital in Panama City

    Directory of Open Access Journals (Sweden)

    Javier Nieto Guevara

    2008-09-01

    Full Text Available OBJETIVOS: Determinar si la introducción de la vacunación infantil contra el rotavirus en Panamá permitió reducir la tasa de hospitalización por gastroenteritis en niños menores de 5 años. MÉTODOS: Estudio observacional de corte transversal en dos períodos: del 1 de enero al 31 de agosto de 2005 (antes de la introducción de la vacunación contra el rotavirus y del 1 de enero al 31 de agosto de 2007 (un año después de la introducción. Se estudiaron todos los niños y niñas entre 2 meses y 5 años de edad hospitalizados con diagnóstico de gastroenteritis aguda grave en la sala de corta estancia de gastroenteritis del Hospital del Niño, en Ciudad de Panamá, Panamá. Las variables fueron: número de episodios de gastroenteritis, número de casos hospitalizados por gastroenteritis aguda grave, días de hospitalización y uso de antibióticos, según dos grupos de edad (de 2 meses a 1 año y de más de 1 año a 5 años. Se calculó el riesgo relativo (RR con intervalos de confianza de 95% (IC95% y un nivel de significación P OBJECTIVES: To determine if infant rotavirus vaccination in Panama has reduced the rate of hospital admission for gastroenteritis among children under 5 years of age. METHODS: An observational, cross-sectional study of two time periods: 1 January-31 August 2005 (prior to initiating rotavirus vaccination and 1 January-31 August 2007 (one year after introducing rotavirus vaccination. All the children from 2 months-5 years of age admitted with a diagnosis of acute gastroenteritis to the short-stay gastroenteritis area of the Children's Hospital in Panama City, Panama, were studied. The variables were: number of gastroenteritis episodes; number of cases admitted for severe acute gastroenteritis; number of days hospitalized; and antibiotics treatment for each of the two age groups (2 months-1 year and >1-5 years. The relative risk (RR was calculated with a 95% confidence interval (95%CI and a significance level of P

  15. Introduction to axiomatic set theory

    CERN Document Server

    Takeuti, Gaisi

    1971-01-01

    In 1963, the first author introduced a course in set theory at the Uni­ versity of Illinois whose main objectives were to cover G6del's work on the consistency of the axiom of choice (AC) and the generalized con­ tinuum hypothesis (GCH), and Cohen's work on the independence of AC and the GCH. Notes taken in 1963 by the second author were the taught by him in 1966, revised extensively, and are presented here as an introduction to axiomatic set theory. Texts in set theory frequently develop the subject rapidly moving from key result to key result and suppressing many details. Advocates of the fast development claim at least two advantages. First, key results are highlighted, and second, the student who wishes to master the sub­ ject is compelled to develop the details on his own. However, an in­ structor using a "fast development" text must devote much class time to assisting his students in their efforts to bridge gaps in the text. We have chosen instead a development that is quite detailed and complete. F...

  16. Introduction of fuel GE14 in the nuclear power plant of Laguna Verde for the extended increase of power; Introduccion del combustible GE14 en la central nuclear Laguna Verde para el aumento de potencia extendido

    Energy Technology Data Exchange (ETDEWEB)

    Hernandez M, N.; Vargas A, A. F.; Cardenas J, J. B.; Contreras C, P. [CFE, Central Nuclear Laguna Verde, Subgerencia de Ingenieria, Carretera Veracruz-Medellin Km. 7.5 (Mexico)]. e-mail: natividad.hernandez@cfe.gob.mx

    2008-07-01

    The project of extended increase of power responds to a necessity of electrical energy in the country, increasing the thermal exit of the reactors of the nuclear power plant of Laguna Verde of 2027 MWt to 2317 MWt. In order to support this transition, changes will make in the configuration of the reactor core and in the operation strategies of the cycle, also they will take initiatives to optimize the economy in fuel cycle. At present in both reactors of the nuclear plant of Laguna Verde fuel GE12 is used. The fuel GE14 presents displays with respect to the GE12, some improvements in the mechanical design and consequently in its performance generally. Between these improvements we can mention: 1. Spacers of high performance. 2. Shielding with barrier. 3. Filter for sweepings {sup d}ebris{sup a}nd 4. Fuel rods of minor partial length. The management of nuclear power plants has decided to introduce the use of fuel GE14 in Laguna Verde in the reload 14 for Unit 1 and of the reload 10 for Unit 2. The process of new introduction fuel GE14 consists of two stages, first consists on subjecting the one new design of fuel to the regulator organism in the USA: Nuclear Regulatory Commission, in Mexico the design must be analyzed and authorized by the National Commission of Nuclear Safety and Safeguards, for its approval of generic form, by means of the demonstration of the fulfillment with the amendment 22 of GESTAR II, the second stage includes the specific analyses of plant to justify the use of the new fuel design in a reload core. The nuclear plant of Laguna Verde would use some of the results of the security analyses that have been realized for the project of extended increase of power with fuel GE14, to document the specific analyses of plant with the new fuel design. The result of the analyses indicates that the reload lots are increased of 116-120 assemblies in present conditions (2027 MWt) to 140-148 assemblies in conditions of extended increase of power (2317 MWt

  17. Introduction to quantum groups

    International Nuclear Information System (INIS)

    Monteiro, Marco A.R.

    1994-01-01

    An elementary introduction to quantum groups is presented. The example of Universal Enveloping Algebra of deformed SU(2) is analysed in detail. It is also discussed systems made up of bosonic q-oscillators at finite temperature within the formalism of Thermo-Field Dynamics. (author). 39 refs

  18. Introduction to nucleosynthesis

    International Nuclear Information System (INIS)

    Guasp, J.

    1975-01-01

    After a short introduction on stellar evolution, the physical foundations of nucleosynthesis are exposed: H, He, C and O fusion, Si burning and the equilibrium process. The effect of neutrinos in the last stages of stellar evolution and Supernova explosions are treated too. Afterwards the neutron capture process, fast and slow, are considerated concluding with cosmic nucleogenesis and nucleosynthesis in overmasive objects. (author)

  19. Russian: An Active Introduction.

    Science.gov (United States)

    De La Cruz, Nina

    The Active Introduction is one of the modules in an array of materials used in Russian training for beginners at the Foreign Service Institute. It is essentially a catalog of sentences relating to typical daily activities which can be combined to form different communication sequences in dialog form. Students learn to speak Russian through…

  20. Introduction to the Project

    DEFF Research Database (Denmark)

    Kuhn, Johan M.; Malchow-Møller, Nikolaj; Sørensen, Anders

    In this note a short introduction to the project “Employment Effects of Entrepreneurs” is presented. First, we describe the purpose of the project; second, we present the background; third, we briefly describe the three papers that constitute the output of the project, and fourth, we discuss two...... important qualifications for the understanding of the contributions and results established in the project....

  1. Introduction to LCA Methodology

    DEFF Research Database (Denmark)

    Hauschild, Michael Z.

    2018-01-01

    In order to offer the reader an overview of the LCA methodology in the preparation of the more detailed description of its different phases, a brief introduction is given to the methodological framework according to the ISO 14040 standard and the main elements of each of its phases. Emphasis...

  2. Introduction to Chiral Symmetry

    Energy Technology Data Exchange (ETDEWEB)

    Koch, Volker [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2017-05-09

    These lectures are an attempt to a pedagogical introduction into the elementary concepts of chiral symmetry in nuclear physics. We will also discuss some effective chiral models such as the linear and nonlinear sigma model as well as the essential ideas of chiral perturbation theory. We will present some applications to the physics of ultrarelativistic heavy ion collisionsd.

  3. Introduction: Adapting Idols

    NARCIS (Netherlands)

    Joost Bruin; dr. Koos Zwaan

    2012-01-01

    Introduction book Adapting Idols Since the first series of Pop Idol aired in the UK just over a decade ago, Idols television shows have been broadcast in more than forty countries all over the world. In all those countries the global Idols format has been adapted to local cultures and production

  4. Introduction to topology

    CERN Document Server

    Mendelson, Bert

    1990-01-01

    Highly regarded for its exceptional clarity, imaginative and instructive exercises, and fine writing style, this concise book offers an ideal introduction to the fundamentals of topology. It provides a simple, thorough survey of elementary topics, starting with set theory and advancing to metric and topological spaces, connectedness, and compactness. 1975 edition.

  5. Introduction to statistics

    CERN Multimedia

    CERN. Geneva

    2005-01-01

    The three lectures will present an introduction to statistical methods as used in High Energy Physics. As the time will be very limited, the course will seek mainly to define the important issues and to introduce the most wide used tools. Topics will include the interpretation and use of probability, estimation of parameters and testing of hypotheses.

  6. Introduction to Statistics course

    CERN Multimedia

    CERN. Geneva HR-RFA

    2006-01-01

    The four lectures will present an introduction to statistical methods as used in High Energy Physics. As the time will be very limited, the course will seek mainly to define the important issues and to introduce the most wide used tools. Topics will include the interpretation and use of probability, estimation of parameters and testing of hypotheses.

  7. Introduction: The Transparency Issue

    NARCIS (Netherlands)

    Teurlings, J.; Stauff, M.

    2014-01-01

    Besides giving an overview on the individual contributions, this introduction to the special issue on transparency delineates a conceptual context for a critical analysis of the contemporary discourse on transparency and the media mechanisms related to it. It focuses on three ambivalences inherent

  8. Introduction to International Trade.

    Science.gov (United States)

    Crummett, Dan M.; Crummett, Jerrie

    This set of student and teacher guides is intended for use in a course to prepare students for entry-level employment in such occupational areas in international trade as business/finance, communications, logistics, and marketing. The following topics are covered in the course's five instructional units: introduction to careers in international…

  9. Introduction to association schemes

    NARCIS (Netherlands)

    Seidel, J.J.

    1991-01-01

    The present paper gives an introduction to the theory of association schemes, following Bose-Mesner (1959), Biggs (1974), Delsarte (1973), Bannai-Ito (1984) and Brouwer-Cohen-Neumaier (1989). Apart from definitions and many examples, also several proofs and some problems are included. The paragraphs

  10. An introduction to radiobiology

    International Nuclear Information System (INIS)

    Nias, A.H.W.; Dimbleby, R.

    1990-01-01

    This text provides an introduction to quantitative radiobiology with emphasis on practical aspects of the subject. Among the topics considered are reparable damage, densely ionizing radiation, normal and malignant cells, and whole body regulation. These and other aspects of radiation biology are described in detail

  11. Introduction to Shakespeare: English.

    Science.gov (United States)

    Hargraves, Richard

    The "Introduction to Shakespeare" course in the Quinmester Program involves the careful study of the tragedy "Romeo and Juliet" and the comedy "The Taming of the Shrew," emphasizing language, development of character and theme. The course also includes the study of biographical data relevant to the evolution of…

  12. Introduction to chiral symmetry

    International Nuclear Information System (INIS)

    Koch, V.

    1996-01-01

    These lectures are an attempt to a pedagogical introduction into the elementary concepts of chiral symmetry in nuclear physics. Effective chiral models such as the linear and nonlinear sigma model will be discussed as well as the essential ideas of chiral perturbation theory. Some applications to the physics of ultrarelativistic heavy ion collisions will be presented

  13. Introduction to HACCP.

    Science.gov (United States)

    Introduction to HACCP Deana R. Jones, Ph.D. Egg Safety and Quality Research Unit USDA-Agricultural Research Service Russell Research Center Athens, GA Deana.Jones@ars.usda.gov HACCP is an acronym for Hazard Analysis and Critical Control Point and was initially developed by the Pillsbury Company a...

  14. An Introduction to Malware

    OpenAIRE

    Sharp, Robin

    2017-01-01

    These notes, intended for use in DTU course 02233 on Network Security, give a short introduction to the topic of malware. The most important types of malware are described, together with their basic principles of operation and dissemination, and defenses against malware are discussed.

  15. Introduction to statistics

    CERN Multimedia

    CERN. Geneva

    2004-01-01

    The three lectures will present an introduction to statistical methods as used in High Energy Physics. As the time will be very limited, the course will seek mainly to define the important issues and to introduce the most wide used tools. Topics will include the interpretation and use of probability, estimation of parameters and testing of hypotheses.

  16. Introduction to ROC analysis

    International Nuclear Information System (INIS)

    Kelsey, C.A.; Mettler, F.A.

    1988-01-01

    An elementary introduction to ROC analysis illustrates how ROC curves depend on observer threshold levels and discusses the relation between ROC curve parameters and other measures of observer performance including accuracy sensitivity specificity true positive fraction, true negative fraction, false positive fraction and false negative fraction

  17. Introduction and fundamentals

    International Nuclear Information System (INIS)

    Thomas, R.H.

    1980-01-01

    This introduction discusses advances in the fundamental sciences which underlie the applied science of health physics and radiation protection. Risk assessments in nuclear medicine are made by defining the conditions of exposure, identification of adverse effects, relating exposure with effect, and estimation of the overall risk for ionizing radiations

  18. Labour and Passion. : Introduction

    NARCIS (Netherlands)

    Dr. Joke Hermes

    2014-01-01

    Abstract In this introduction to the themed section on ‘Labour and passion’, it is argued that work has bled into all areas of life. Political economists and media production researchers have shown how both paid and unpaid labour are singularly important and build upon one another. The set of

  19. Diophantine geometry an introduction

    CERN Document Server

    Hindry, Marc

    2000-01-01

    This is an introduction to diophantine geometry at the advanced graduate level. The book contains a proof of the Mordell conjecture which will make it quite attractive to graduate students and professional mathematicians. In each part of the book, the reader will find numerous exercises.

  20. Introduction to superstrings

    International Nuclear Information System (INIS)

    Kaku, M.

    1988-01-01

    This tutorial introduces the development of, and current trends in, superstring theory, a significant and still controversial attempt to unify general relatively and quantum field theory. Stressing current areas of research activity, Introduction to Superstrings addresses topics including string field theory, multi-loops and Teichmuller spaces, conformal field theory, and four-dimensional superstrings

  1. Introduction to number theory

    CERN Document Server

    Vazzana, Anthony; Garth, David

    2007-01-01

    One of the oldest branches of mathematics, number theory is a vast field devoted to studying the properties of whole numbers. Offering a flexible format for a one- or two-semester course, Introduction to Number Theory uses worked examples, numerous exercises, and two popular software packages to describe a diverse array of number theory topics.

  2. Biorefineries: A Short Introduction.

    Science.gov (United States)

    Wagemann, Kurt; Tippkötter, Nils

    2018-04-13

    The terms bioeconomy and biorefineries are used for a variety of processes and developments. This short introduction is intended to provide a delimitation and clarification of the terminology as well as a classification of current biorefinery concepts. The basic process diagrams of the most important biorefinery types are shown.

  3. Introduction to Film.

    Science.gov (United States)

    Burns, Gary

    There are numerous ways to structure the introduction to film course so as to meet the needs of the different types of students who typically enroll. Assuming there is no production component in the course, the teacher is left with two major approaches to choose from--historical and aesthetic. The units in the course will typically be built around…

  4. Introduction to Film Making.

    Science.gov (United States)

    Davis, Robert E.

    This booklet is intended for teachers who are now teaching units in film production as part of a program in communication or who wish to begin work with filmmaking in such a program. The first section is intended to serve as a brief introduction to film theory, while a major portion of the rest of the booklet is devoted to film projects which may…

  5. Introduction to particle physics

    International Nuclear Information System (INIS)

    Zitoun, R.

    2000-01-01

    This book proposes an introduction to particle physics that requires only a high-school level mathematical knowledge. Elementary particles (leptons, quarks, bosons) are presented according to a modern view taking into account of their symmetries and interactions. The author shows how physicists have elaborated the standard model and what are its implications in cosmology. (J.S.)

  6. Introduction to risk assessment

    International Nuclear Information System (INIS)

    Raina, V.M.

    2002-01-01

    This paper gives an introduction to risk assessment. It discusses the basic concepts of risk assessment, nuclear risk assessment process and products, the role of risk assessment products in nuclear safety assurance, the relationship between risk assessment and other safety analysis and risk assessment and safe operating envelope

  7. Successful introduction of innovations

    International Nuclear Information System (INIS)

    Schoots, K.; Jeeninga, H.

    2008-01-01

    The introduction of new technology is sometimes troubled by discontinuity in incentive schemes. By making prior assessments of the necessary means, the real time span for the incentive scheme and by maintaining this scheme until the technology is mature enough to enter the market, the success of innovation trajectories can be increased significantly. [mk] [nl

  8. Successful introduction of innovation

    International Nuclear Information System (INIS)

    Schoots, K.; Jeeninga, H.

    2008-01-01

    The introduction of new technology sometimes proceeds sluggishly due to discontinuity in incentive schemes. Estimating in advance which means are required, what a realistic time span is for the incentive scheme and continuing this scheme until the technology is marketable can significantly increase the success of innovation trajectories. [mk] [nl

  9. Chemical Safety – Introduction

    CERN Multimedia

    DG Unit

    2009-01-01

    A course of "Chemical Safety – Introduction" will be held in English on 29 May 2009, 9:30-12:00. There are some places left. If you are interested in participating, please register on the Training Catalogue. You will then receive an invitation by email.

  10. Estimaciones contables en estados financieros de publicación: revisión de la literatura y lineamientos de una propuesta de investigación

    OpenAIRE

    Barbei, Alejandro Agustín; Barbería, José Miguel; González, Paula Carolina; Pedrini, Julián Horacio

    2017-01-01

    El presente trabajo forma parte del proyecto de investigación titulado “Contabilidad Financiera: Modelos decisorios, necesidades de los usuarios y emisión de Información” acreditado ante la Universidad Nacional de La Plata (Código E152), el cual pretende analizar las características de la información emitida por las organizaciones y sus estados financieros y determinar cómo se adaptan éstos a las necesidades de los usuarios. Mediante la investigación, se desarrolla la búsqueda de fundamen...

  11. Eficacia del consejo médico para la reducción del consumo excesivo de alcohol: Metaanálisis de estudios españoles en atención primaria Effectiveness of medical advice for reducing excessive alcohol conssumption: Meta-analysis of Spanish studies in primary care

    Directory of Open Access Journals (Sweden)

    J. Ballesteros

    2003-04-01

    Full Text Available Introducción: Revisiones sistemáticas previas han apoyado la eficacia del consejo médico, como intervención breve, en el abordaje de bebedores excesivos detectados en la asistencia primaria. Sin embargo, estos resultados no pueden extrapolarse directamente a poblaciones que, como las mediterráneas, no están representadas en dichas revisiones. El objetivo de este estudio fue actualizar la evidencia sobre la eficacia de la intervención breve en consumidores excesivos de alcohol según estudios españoles. Métodos: Búsqueda de estudios en bases bibliográficas y consultas a expertos para localizar estudios no publicados. Se calcularon las estimaciones combinadas para dos variables de resultado, la reducción del consumo de alcohol y la disminución de la frecuencia de bebedores excesivos. Resultados: Dos de los 5 estudios localizados no estaban incluidos en una revisión previa. La eficacia de la intervención breve fue moderada para la disminución del consumo de alcohol (d = - 0,46; intervalo de confianza (IC del 95%, - 0,29 a - 0,63; p Introduction: Former systematic reviews have backed the efficacy of medical counselling, a form of brief intervention, on the treatment of excessive drinkers detected in primary care settings. Nevertheless, these results cannot be applied without criticism to Mediterranean populations which, so far, have not been represented in the aforementioned studies. The aim of the present study was to update the results on the efficacy of brief interventions in primary care by pooling Spanish studies. Methods: Studies were searched for by using appropriate databases and also by consulting to experts in the field to retrieve grey literature. Pooled estimations of effect sizes were calculated for two outcomes, the reduction in the amount of alcohol consumption and the decrease in the number of excessive drinkers. Results: Two over the 5 retrieved studies were not included in a former review. The effect size regarding

  12. Cajal and consciousness. Introduction.

    Science.gov (United States)

    Marijuán, P C

    2001-04-01

    One hundred years after Santiago Ramón Cajal established the bases of modern neuroscience in his masterpiece Textura del sistema nervioso del hombre y de los vertebrados, the question is stated again: What is the status of consciousness today? The responses in this book, by contemporary leading figures of neuroscience, evolution, molecular biology, computer science, and quantum physics, collectively compose a fascinating conceptual landscape. Both the evolutionary emergence of consciousness and its development towards the highest level may be analyzed by a wealth of new theories and hypotheses, including Cajal's prescient ones. Some noticeable gaps remain, however. Celebrating the centennial of Textura is a timely occasion to reassess how close--and how far--our system of the sciences is to explaining consciousness.

  13. Introducting drama for ESL

    Directory of Open Access Journals (Sweden)

    Roberto Vladimir Carbajal

    2018-03-01

    Full Text Available El recurso del arte como medio para enseñar un idioma nuevo ha sido muy efectivo para motivar al aprendiz a expresarse, y poner en práctica lo aprendido. El drama recurre a diversas técnicas que se describen en este artículo en el sentido de poder aprender en un contexto cuasi real.

  14. Introduction to modern magnetohydrodynamics

    CERN Document Server

    Galtier, Sébastien

    2016-01-01

    Ninety-nine percent of ordinary matter in the Universe is in the form of ionized fluids, or plasmas. The study of the magnetic properties of such electrically conducting fluids, magnetohydrodynamics (MHD), has become a central theory in astrophysics, as well as in areas such as engineering and geophysics. This textbook offers a comprehensive introduction to MHD and its recent applications, in nature and in laboratory plasmas; from the machinery of the Sun and galaxies, to the cooling of nuclear reactors and the geodynamo. It exposes advanced undergraduate and graduate students to both classical and modern concepts, making them aware of current research and the ever-widening scope of MHD. Rigorous derivations within the text, supplemented by over 100 illustrations and followed by exercises and worked solutions at the end of each chapter, provide an engaging and practical introduction to the subject and an accessible route into this wide-ranging field.

  15. Introduction to linear elasticity

    CERN Document Server

    Gould, Phillip L

    2013-01-01

    Introduction to Linear Elasticity, 3rd Edition, provides an applications-oriented grounding in the tensor-based theory of elasticity for students in mechanical, civil, aeronautical, and biomedical engineering, as well as materials and earth science. The book is distinct from the traditional text aimed at graduate students in solid mechanics by introducing the subject at a level appropriate for advanced undergraduate and beginning graduate students. The author's presentation allows students to apply the basic notions of stress analysis and move on to advanced work in continuum mechanics, plasticity, plate and shell theory, composite materials, viscoelasticity and finite method analysis. This book also:  Emphasizes tensor-based approach while still distilling down to explicit notation Provides introduction to theory of plates, theory of shells, wave propagation, viscoelasticity and plasticity accessible to advanced undergraduate students Appropriate for courses following emerging trend of teaching solid mechan...

  16. Introduction to Abelian varieties

    CERN Document Server

    Murty, V Kumar

    1993-01-01

    The book represents an introduction to the theory of abelian varieties with a view to arithmetic. The aim is to introduce some of the basics of the theory as well as some recent arithmetic applications to graduate students and researchers in other fields. The first part contains proofs of the Abel-Jacobi theorem, Riemann's relations and the Lefschetz theorem on projective embeddings over the complex numbers in the spirit of S. Lang's book Introduction to algebraic and abelian functions. Then the Jacobians of Fermat curves as well as some modular curves are discussed. Finally, as an application, Faltings' proof of the Mordell conjecture and its intermediate steps, the Tate conjecture and the Shafarevich conjecture, are sketched. - H. Lange for MathSciNet.

  17. Introduction to Sporadic Groups

    Directory of Open Access Journals (Sweden)

    Luis J. Boya

    2011-01-01

    Full Text Available This is an introduction to finite simple groups, in particular sporadic groups, intended for physicists. After a short review of group theory, we enumerate the 1+1+16=18 families of finite simple groups, as an introduction to the sporadic groups. These are described next, in three levels of increasing complexity, plus the six isolated ''pariah'' groups. The (old five Mathieu groups make up the first, smallest order level. The seven groups related to the Leech lattice, including the three Conway groups, constitute the second level. The third and highest level contains the Monster group M, plus seven other related groups. Next a brief mention is made of the remaining six pariah groups, thus completing the 5+7+8+6=26 sporadic groups. The review ends up with a brief discussion of a few of physical applications of finite groups in physics, including a couple of recent examples which use sporadic groups.

  18. Introduction to computer networking

    CERN Document Server

    Robertazzi, Thomas G

    2017-01-01

    This book gives a broad look at both fundamental networking technology and new areas that support it and use it. It is a concise introduction to the most prominent, recent technological topics in computer networking. Topics include network technology such as wired and wireless networks, enabling technologies such as data centers, software defined networking, cloud and grid computing and applications such as networks on chips, space networking and network security. The accessible writing style and non-mathematical treatment makes this a useful book for the student, network and communications engineer, computer scientist and IT professional. • Features a concise, accessible treatment of computer networking, focusing on new technological topics; • Provides non-mathematical introduction to networks in their most common forms today;< • Includes new developments in switching, optical networks, WiFi, Bluetooth, LTE, 5G, and quantum cryptography.

  19. Mind a brief introduction

    CERN Document Server

    Searle, John R

    2004-01-01

    "The philosophy of mind is unique among contemporary philosophical subjects," writes John Searle, "in that all of the most famous and influential theories are false." One of the world's most eminent thinkers, Searle dismantles these theories as he presents a vividly written, comprehensive introduction to the mind. He begins with a look at the twelve problems of philosophy of mind--which he calls "Descartes and Other Disasters"--problems which he returns to throughout the volume, as he illuminates such topics as materialism, consciousness, the mind-body problem, intentionality, mental causation, free will, and the self. The book offers a refreshingly direct and engaging introduction to one of the most intriguing areas of philosophy.

  20. Guest Editor's Introduction

    DEFF Research Database (Denmark)

    Seeberg, Peter

    2015-01-01

    This introductory article’s point of departure is the transformation processes that have taken place in theMiddle East since 2011. It presents perspectives in the academic discussions following the surprising events in a post-‘Arab Spring’ scenario. The Introduction emphasizes that it is the ambi......This introductory article’s point of departure is the transformation processes that have taken place in theMiddle East since 2011. It presents perspectives in the academic discussions following the surprising events in a post-‘Arab Spring’ scenario. The Introduction emphasizes...... that it is the ambition of this collection of articles to discuss and make sense of the significant differences in the developments,where newgeopolitical dynamics reshape theMENA-region’s post-‘Arab Spring’ reality....

  1. Introduction to cosmology

    CERN Document Server

    Roos, Matts

    2015-01-01

    The Fourth Edition of Introduction to Cosmology provides a concise, authoritative study of cosmology at an introductory level. Starting from elementary principles and the early history of cosmology, the text carefully guides the student on to curved spacetimes, special and general relativity, gravitational lensing, the thermal history of the Universe, and cosmological models, including extended gravity models, black holes and Hawking's recent conjectures on the not-so-black holes.

  2. Introduction to group theory

    Directory of Open Access Journals (Sweden)

    Canals B.

    2012-03-01

    Full Text Available This chapter is a concise mathematical introduction into the algebra of groups. It is build up in the way that definitions are followed by propositions and proofs. The concepts and the terminology introduced here will serve as a basis for the following chapters that deal with group theory in the stricter sense and its application to problems in physics. The mathematical prerequisites are at the bachelor level.1

  3. Introduction to superstring theory

    International Nuclear Information System (INIS)

    Nunez, Carmen

    2009-01-01

    This is a very basic introduction to the AdS/CFT correspondence. The first lecture motivates the duality between gauge theories and gravity/string theories. The next two lectures introduce the bosonic and supersymmetric string theories. The fourth lecture is devoted to study Dp-branes and finally, in the fifth lecture I discuss the two worlds: N=4 SYM in 3+1 flat dimensions and type IIB superstrings in AdS 5 x S5. (author)

  4. Introduction to reversible computing

    CERN Document Server

    Perumalla, Kalyan S

    2013-01-01

    Few books comprehensively cover the software and programming aspects of reversible computing. Filling this gap, Introduction to Reversible Computing offers an expanded view of the field that includes the traditional energy-motivated hardware viewpoint as well as the emerging application-motivated software approach. Collecting scattered knowledge into one coherent account, the book provides a compendium of both classical and recently developed results on reversible computing. It explores up-and-coming theories, techniques, and tools for the application of rever

  5. Introduction to contact mechanics

    CERN Document Server

    Fischer-Cripps, Anthony C

    2000-01-01

    Contact mechanics deals with the elastic or plastic contact between two solid objects, and is thus intimately connected with such topics as fracture, hardness, and elasticity.This text, intended for advanced undergraduates, begins with an introduction to the mechanical properties of materials, general fracture mechanics, and fractures in brittle solids.This is followed by a detailed discussion of stresses and the nature of elastic and elastic-plastic contact.

  6. Introduction to minimax

    CERN Document Server

    Dem'yanov, V F; Louvish, D

    2014-01-01

    This user-friendly text offers a thorough introduction to the part of optimization theory that lies between approximation theory and mathematical programming, both linear and nonlinear. Written by two distinguished mathematicians, the expert treatment covers the essentials, incorporating important background materials, examples, and extensive notes.Geared toward advanced undergraduate and graduate students of mathematical programming, the text explores best approximation by algebraic polynomials in both discrete and continuous cases; the discrete problem, with and without constraints; the gene

  7. Introduction to Feynman diagrams

    CERN Document Server

    Bilenky, Samoil Mikhelevich

    1974-01-01

    Introduction to Feynman Diagrams provides Feynman diagram techniques and methods for calculating quantities measured experimentally. The book discusses topics Feynman diagrams intended for experimental physicists. Topics presented include methods for calculating the matrix elements (by perturbation theory) and the basic rules for constructing Feynman diagrams; techniques for calculating cross sections and polarizations; processes in which both leptons and hadrons take part; and the electromagnetic and weak form factors of nucleons. Experimental physicists and graduate students of physics will

  8. Combinatorics an introduction

    CERN Document Server

    Faticoni, Theodore G

    2014-01-01

    Bridges combinatorics and probability and uniquely includes detailed formulas and proofs to promote mathematical thinking Combinatorics: An Introduction introduces readers to counting combinatorics, offers examples that feature unique approaches and ideas, and presents case-by-case methods for solving problems. Detailing how combinatorial problems arise in many areas of pure mathematics, most notably in algebra, probability theory, topology, and geometry, this book provides discussion on logic and paradoxes; sets and set notations; power sets and their cardinality; Venn diagrams; the multip

  9. Introduction to Extra Dimensions

    Energy Technology Data Exchange (ETDEWEB)

    Rizzo, Thomas G.; /SLAC

    2010-04-29

    Extra dimensions provide a very useful tool in addressing a number of the fundamental problems faced by the Standard Model. The following provides a very basic introduction to this very broad subject area as given at the VIII School of the Gravitational and Mathematical Physics Division of the Mexican Physical Society in December 2009. Some prospects for extra dimensional searches at the 7 TeV LHC with {approx}1 fb{sup -1} of integrated luminosity are provided.

  10. Introduction to superstring theory

    Energy Technology Data Exchange (ETDEWEB)

    Nunez, Carmen [Instituto de Astronomia y Fisica del Espacio, Buenos Aires (Argentina)], e-mail: carmen@iafe.uba.ar

    2009-07-01

    This is a very basic introduction to the AdS/CFT correspondence. The first lecture motivates the duality between gauge theories and gravity/string theories. The next two lectures introduce the bosonic and supersymmetric string theories. The fourth lecture is devoted to study Dp-branes and finally, in the fifth lecture I discuss the two worlds: N=4 SYM in 3+1 flat dimensions and type IIB superstrings in AdS{sub 5} x S5. (author)

  11. Introduction to nanotheranostics

    CERN Document Server

    Tamil Selvan, Subramanian

    2016-01-01

    This book offers readers an introduction to the current status of nanoparticles and other nanomaterials that have potential applications in theranostics. Above all, it highlights the diagnostic and therapeutic applications of metallic (e.g. Au, Ag), semiconducting quantum dots (e.g. CdSe, CdTe), magnetic (e.g. Fe3O4, FePt, Co), and multifunctional (combination of two or three) nanoparticles. .

  12. Introduction to biomechatronics

    CERN Document Server

    Brooker, Graham

    2012-01-01

    Introduction to Biomechatronics provides fundamental knowledge of mechanical and electronic (mechatronic) components and systems and their interaction with human biology to assist or replace limbs, senses, and even organs damaged by trauma, birth defects, or disease. The first half of the book provides the engineering background to understand all the components of a biomechatronic system: the human subject, stimulus or actuation, transducers and sensors, signal conditioning elements, recording and display, and feedback elements.

  13. Introduction to electronics

    CERN Document Server

    Korneff, Theodore

    1966-01-01

    Introduction to Electronics focuses on the study of electronics and electronic devices. Composed of 14 chapters, the book starts with discussions on dc circuits, including resistance, voltmeter, ammeter, galvanometer, internal resistance, and positive and negative currents. This topic is followed by discussions on ac circuits, particularly addressing voltage and current, average power, resistive load, complex plane, and parallel circuits. Discussions also focus on filters and tuned circuits, diodes, and power supplies. Particularly given attention are the processes, diagrams, and analyses

  14. Introduction to Accelerators Physics

    International Nuclear Information System (INIS)

    Variola, A.

    2007-01-01

    This short course aims at giving to high energy physics students a preliminary introduction to accelerators basics. The arguments and the style were selected in this perspective. Consequently, topics such as the definition of beam parameters and luminosity were preferred to much more technical aspects. The calculation details were neglected to allow more important highlights on concepts and definitions. Some examples and exercises were suggested to summarize the different topics of the lessons

  15. Introduction to parallel programming

    CERN Document Server

    Brawer, Steven

    1989-01-01

    Introduction to Parallel Programming focuses on the techniques, processes, methodologies, and approaches involved in parallel programming. The book first offers information on Fortran, hardware and operating system models, and processes, shared memory, and simple parallel programs. Discussions focus on processes and processors, joining processes, shared memory, time-sharing with multiple processors, hardware, loops, passing arguments in function/subroutine calls, program structure, and arithmetic expressions. The text then elaborates on basic parallel programming techniques, barriers and race

  16. Introduction to Plasma Physics

    Science.gov (United States)

    Gurnett, Donald A.; Bhattacharjee, Amitava

    2017-03-01

    Preface; 1. Introduction; 2. Characteristic parameters of a plasma; 3. Single particle motions; 4. Waves in a cold plasma; 5. Kinetic theory and the moment equations; 6. Magnetohydrodynamics; 7. MHD equilibria and stability; 8. Discontinuities and shock waves; 9. Electrostatic waves in a hot unmagnetized plasma; 10. Waves in a hot magnetized plasma; 11. Nonlinear effects; 12. Collisional processes; Appendix A. Symbols; Appendix B. Useful trigonometric identities; Appendix C. Vector differential operators; Appendix D. Vector calculus identities; Index.

  17. Introduction to neutron scattering

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, W E [Paul Scherrer Inst. (PSI), Villigen (Switzerland)

    1996-11-01

    We give here an introduction to the theoretical principles of neutron scattering. The relationship between scattering- and correlation-functions is particularly emphasized. Within the framework of linear response theory (justified by the weakness of the basic interaction) the relation between fluctuation and dissipation is discussed. This general framework explains the particular power of neutron scattering as an experimental method. (author) 4 figs., 4 refs.

  18. Semiconductor Manufacturing equipment introduction

    International Nuclear Information System (INIS)

    Im, Jong Sun

    2001-02-01

    This book deals with semiconductor manufacturing equipment. It is comprised of nine chapters, which are manufacturing process of semiconductor device, history of semiconductor manufacturing equipment, kinds and role of semiconductor manufacturing equipment, construction and method of semiconductor manufacturing equipment, introduction of various semiconductor manufacturing equipment, spots of semiconductor manufacturing, technical elements of semiconductor manufacturing equipment, road map of technology of semiconductor manufacturing equipment and semiconductor manufacturing equipment in the 21st century.

  19. Introduction to heat transfer

    CERN Document Server

    SUNDÉN, B

    2012-01-01

    Presenting the basic mechanisms for transfer of heat, Introduction to Heat Transfer gives a deeper and more comprehensive view than existing titles on the subject. Derivation and presentation of analytical and empirical methods are provided for calculation of heat transfer rates and temperature fields as well as pressure drop. The book covers thermal conduction, forced and natural laminar and turbulent convective heat transfer, thermal radiation including participating media, condensation, evaporation and heat exchangers.

  20. Accounting Applications---Introduction

    OpenAIRE

    Joshua Ronen

    1980-01-01

    Introduction to special issue on accounting applications. By publishing these papers together in one issue of Management Science we wish to accomplish the dual purpose of exposing management scientists to the application of their discipline to important accounting problems and of allowing management scientists and accountants to interact in areas of research and problem-solving, thus stimulating the interest of readers who are concerned with the problems of accounting.

  1. Introduction: Righting Feminism

    OpenAIRE

    Farris, Sara R.

    2017-01-01

    This is the introduction to a special issue on Righting Feminism. In recent years, we have witnessed the multifarious ways in which feminism as an emancipatory project dedicated to women's liberation has increasingly “converged” with non-emancipatory/racist, conservative, and neo-liberal economic and political agendas. Today, feminist themes are not only being "mainstreamed" but are also increasingly being mobilized to bolster existing power hierarchies as well as neo-liberal and right-wing x...

  2. Introduction: Persistent Modelling

    DEFF Research Database (Denmark)

    Ayres, Phil

    2012-01-01

    This introduction to 'Persistent Modelling – an extended role for architectural representation' identifies how the book probes the relationship between representation and the represented, in an architectural context. It discusses how the book presents an examination and discussion of historical......, familiar contemporary and, perhaps, not so familiar emerging manifestations of this relation. What persists from this probing, fully intact, is that representation and the represented remain inextricably related in our contemporary and emerging practices. What comes into focus is that the nature...

  3. Ion implantation - an introduction

    International Nuclear Information System (INIS)

    Townsend, P.D.

    1986-01-01

    Ion implantation is a widely used technique with a literature that covers semiconductor production, surface treatments of steels, corrosion resistance, catalysis and integrated optics. This brief introduction outlines advantages of the technique, some aspects of the underlying physics and examples of current applications. Ion implantation is already an essential part of semiconductor technology while in many other areas it is still in an early stage of development. The future scope of the subject is discussed. (author)

  4. Introduction to analytical mechanics

    CERN Document Server

    Gamalath, KAILW

    2011-01-01

    INTRODUCTION TO ANALYTICAL MECHANICS is an attempt to introduce the modern treatment of classical mechanics so that transition to many fields in physics can be made with the least difficulty. This book deal with the formulation of Newtonian mechanics, Lagrangian dynamics, conservation laws relating to symmetries, Hamiltonian dynamics Hamilton's principle, Poisson brackets, canonical transformations which are invaluable in formulating the quantum mechanics and Hamilton-Jacobi equation which provides the transition to wave mechanics.

  5. Introduction to QCD

    OpenAIRE

    Skands, Peter

    2012-01-01

    These lectures were originally given at TASI and are directed at a level suitable for graduate students in High Energy Physics. They are intended to give an introduction to the theory and phenomenology of quantum chromodynamics (QCD), focusing on collider physics applications. The aim is to bring the reader to a level where informed decisions can be made concerning different approaches and their uncertainties. The material is divided into five main areas: 1) fundamentals, 2) fixed-order pertu...

  6. Introduction to Q

    International Nuclear Information System (INIS)

    Kellogg, M.; Minor, M.M.; Shlaer, S.; Spencer, N.; Thomas, R.F. Jr.; van der Beken, H.

    1978-06-01

    This manual presents an overview of the Q data-acquisition system. Its purposes are to assist an experimenter in determining whether the system is suited to his needs and to provide an introduction to the more detailed manuals. This system employs a powerful technique for dealing with multiprocessor systems by generating code and communication protocol for two processors from a single source program in a high-level language. Some details of experimental event buffering and distribution are discussed

  7. Introduction to abstract algebra

    CERN Document Server

    Nicholson, W Keith

    2012-01-01

    Praise for the Third Edition ". . . an expository masterpiece of the highest didactic value that has gained additional attractivity through the various improvements . . ."-Zentralblatt MATH The Fourth Edition of Introduction to Abstract Algebra continues to provide an accessible approach to the basic structures of abstract algebra: groups, rings, and fields. The book's unique presentation helps readers advance to abstract theory by presenting concrete examples of induction, number theory, integers modulo n, and permutations before the abstract structures are defined. Readers can immediately be

  8. Introduction to microfabrication

    CERN Document Server

    Franssila, Sami

    2005-01-01

    Microfabrication is the key technology behind integrated circuits, microsensors, photonic crystals, ink jet printers, solar cells and flat panel displays. Microsystems can be complex, but the basic microstructures and processes of microfabrication are fairly simple. Introduction to Microfabrication shows how the common microfabrication concepts can be applied over and over again to create devices with a wide variety of structures and functions.Featuring:* A comprehensive presentation of basic fabrication processes* An emphasis on materials and microstructures, rather than devic

  9. Biologia reproductiva y estimaciones de poblaciones de la trucha arco iris salmo gairdneri, en dos ríos montañosos de costa Rica

    Directory of Open Access Journals (Sweden)

    Debbie Irwin

    2016-03-01

    También los peces adultos usualmente migran río abajo después del desove y exhiben un comportamiento de territorialidad, lo cual crea mayor dispersión. Se sacrificaron de 5 a 7 individuos por semana para estudiar su biología reproductiva. La proporción de hembras a machos fue de 1,3: 1, indicando esto una distribución aproximadamente igual entre los sexos. Los meses de marzo a abril son los últimos de la época de desove, la cual se calcula comienza en enero. La mayoría de los peces muestreados tenían sus gónadas en las 3 primeras etapas de desarrollo. Unos pocos se encontraron desovando activamente o recientemente gastados. Todo indica que la trucha Arco Iris se reproduce naturalmente en Costa Rica.

  10. Calibración in situ del sensor cosmos para determinar humedad del suelo en escalas intermedias (~1 km

    Directory of Open Access Journals (Sweden)

    Fidencio Cruz Bautista

    2013-10-01

    Full Text Available La heterogeneidad del suelo influye ampliamente en el contenido de humedad, dificultando la precisa determinación de este parámetro en estudios con fines hidrológicos y ecológicos que requieren de mediciones continuas y representativas para escalas intermedias (~1 km. En este contexto un sensor de neutrón de rayo cósmico The COsmic-ray Soil Moisture Observing System (COSMOS permite cuantificar humedad del suelo de manera continua y a escalas espaciales de cientos de metros. El objetivo de este estudio fue evaluar un esquema de calibración para un sensor COSMOS CRS-1000. El estudio se realizó en una sabana de zacate buffel (Pennisetum ciliare en Rayón Sonora, México. En este sitio se instaló el COSMOS CRS-1000 y para su calibración se realizaron muestreos de suelo en dos etapas. A estas muestras se les determinó el contenido de humedad y su densidad aparente por técnicas gravimétricas. Con el contenido de humedad de estas muestras, expresado en términos volumétricos, se obtuvo por aproximación el parámetro de calibración para el COSMOS CRS-1000. El valor obtenido para este parámetro fue de 4121 conteos por hora (tasa de conteo del neutrón sobre suelo. Con este valor se realizó la corrección a los valores estimados originalmente por el sensor COSMOS CRS-1000. Al realizar esta corrección, se observó un incremento en el contenido de humedad del suelo de 1 a 2 % con respecto a los valores estimados con el COSMOS CRS-1000 en todo el periodo de análisis. A pesar de la variabilidad espacial en el contenido de humedad del suelo bajo estudio, se observó que el sensor COSMOS CRS-1000 tiene la capacidad de proveer estimaciones razonables del contenido de la humedad del suelo de manera continua a una profundidad de 0 a 40 cm, en una superficie de alrededor de 30 ha.

  11. Estimación de la estatura en muestras del Holoceno Tardío del N.O. de Santa Cruz: problemas metodológicos

    Directory of Open Access Journals (Sweden)

    Béguelin, Marien

    2005-01-01

    Full Text Available Un tema muy debatido ha sido el de la estatura de las poblaciones aborígenes tardías del sur de Patagonia la cual, de acuerdo con los estándares europeos del siglo XVI, ha sido descripta como excepcional. Una muestra osteológica recientemente recuperada que permite aproximarse a este problema, es la procedente del lago Salitroso (N.O. de la provincia de Santa Cruz. La misma, constituida por un mínimo de 60 individuos de diferente sexo y edad, corresponde a distintos momentos del Holoceno tardío (ca. 2500 a 300 años 14C AP. La estimación de la estatura a partir de medidas lineales de huesos largos de muestras arqueológicas constituye un problema complejo, debido a la gran variedad de ecuaciones existentes en la literatura. Las mismas, derivadas de diferentes muestras de referencia, producen resultados muy disímiles que, en nuestro caso de estudio, varían (valores medios entre 168 y 177 mm en individuos masculinos y entre 162,7 y 165 mm en femeninos. El objetivo del presente trabajo es discutir una serie de criterios (v.g. proximidad genética, similitud ambiental y de proporciones corporales entre la muestra problema y la de referencia que resulten aplicables en el proceso de selección de las ecuaciones, con el fin de derivar estimaciones mas adecuadas y realistas de la estatura en muestras arqueológicas.

  12. Introduction to the ROOT System

    CERN Multimedia

    CERN. Geneva

    2008-01-01

    Introduction to the ROOT data handling system. ROOT is used in some for or another by all LHC experiments and will be used by all for final data analysis. The introduction gives an overview of the system. Prerequisite knowledge: C++

  13. Introduction to Artificial Neural Networks

    DEFF Research Database (Denmark)

    Larsen, Jan

    1999-01-01

    The note addresses introduction to signal analysis and classification based on artificial feed-forward neural networks.......The note addresses introduction to signal analysis and classification based on artificial feed-forward neural networks....

  14. Human drug metabolism: an introduction

    National Research Council Canada - National Science Library

    Coleman, Michael D

    2010-01-01

    Human Drug Metabolism, An Introduction, Second Edition provides an accessible introduction to the subject and will be particularly invaluable to those who already have some understanding of the life sciences...

  15. Introduction to laser technology

    CERN Document Server

    Hitz, C Breck; Hecht, Jeff; Hitz, C Breck; John Wiley & Sons

    2001-01-01

    Electrical Engineering Introduction to Laser Technology , Third Edition. Would you like to know how a laser works, and how it can be modified for your own specific tasks? This intuitive third edition-previously published as Understanding Laser Technology , First and Second Editions-introduces engineers, scientists, technicians, and novices alike to the world of modern lasers, without delving into the mathematical details of quantum electronics. It is the only introductory text on the market today that explains the underlying physics and engineering applicable to all lasers. A unique combinatio.

  16. Introduction to applied thermodynamics

    CERN Document Server

    Helsdon, R M; Walker, G E

    1965-01-01

    Introduction to Applied Thermodynamics is an introductory text on applied thermodynamics and covers topics ranging from energy and temperature to reversibility and entropy, the first and second laws of thermodynamics, and the properties of ideal gases. Standard air cycles and the thermodynamic properties of pure substances are also discussed, together with gas compressors, combustion, and psychrometry. This volume is comprised of 16 chapters and begins with an overview of the concept of energy as well as the macroscopic and molecular approaches to thermodynamics. The following chapters focus o

  17. Introduction to cosmology

    CERN Document Server

    Roos, Matts

    2003-01-01

    The Third Edition of the hugely successful Introduction to Cosmology provides a concise, authoritative study of cosmology at an introductory level. Starting from elementary principles and the history of cosmology, the text carefully guides the student on to curved spacetimes, general relativity, black holes, cosmological models, particles and symmetries, and phase transitions. Extensively revised, this latest edition includes broader and updated coverage of distance measures, gravitational lensing and waves, dark energy and quintessence, the thermal history of the Universe, inflation,

  18. Introduction to real analysis

    CERN Document Server

    Schramm, Michael J

    2008-01-01

    This text forms a bridge between courses in calculus and real analysis. It focuses on the construction of mathematical proofs as well as their final content. Suitable for upper-level undergraduates and graduate students of real analysis, it also provides a vital reference book for advanced courses in mathematics.The four-part treatment begins with an introduction to basic logical structures and techniques of proof, including discussions of the cardinality concept and the algebraic and order structures of the real and rational number systems. Part Two presents in-depth examinations of the compl

  19. Fourier analysis an introduction

    CERN Document Server

    Stein, Elias M

    2003-01-01

    This first volume, a three-part introduction to the subject, is intended for students with a beginning knowledge of mathematical analysis who are motivated to discover the ideas that shape Fourier analysis. It begins with the simple conviction that Fourier arrived at in the early nineteenth century when studying problems in the physical sciences--that an arbitrary function can be written as an infinite sum of the most basic trigonometric functions.The first part implements this idea in terms of notions of convergence and summability of Fourier series, while highlighting applications such as th

  20. Introduction to dynamic programming

    CERN Document Server

    Cooper, Leon; Rodin, E Y

    1981-01-01

    Introduction to Dynamic Programming provides information pertinent to the fundamental aspects of dynamic programming. This book considers problems that can be quantitatively formulated and deals with mathematical models of situations or phenomena that exists in the real world.Organized into 10 chapters, this book begins with an overview of the fundamental components of any mathematical optimization model. This text then presents the details of the application of dynamic programming to variational problems. Other chapters consider the application of dynamic programming to inventory theory, Mark

  1. Introduction to modern cryptography

    CERN Document Server

    Katz, Jonathan

    2014-01-01

    Praise for the First Edition:""This book is a comprehensive, rigorous introduction to what the authors name 'modern' cryptography. … a novel approach to how cryptography is taught, replacing the older, construction-based approach. … The concepts are clearly stated, both in an intuitive fashion and formally. … I would heartily recommend this book to anyone who is interested in cryptography. … The exercises are challenging and interesting, and can benefit readers of all academic levels.""-IACR Book Reviews, January 2010""Over the past 30 years, cryptography has been transformed from a mysterious

  2. Introduction to Heat Pipes

    Science.gov (United States)

    Ku, Jentung

    2015-01-01

    This is the presentation file for the short course Introduction to Heat Pipes, to be conducted at the 2015 Thermal Fluids and Analysis Workshop, August 3-7, 2015, Silver Spring, Maryland. NCTS 21070-15. Course Description: This course will present operating principles of the heat pipe with emphases on the underlying physical processes and requirements of pressure and energy balance. Performance characterizations and design considerations of the heat pipe will be highlighted. Guidelines for thermal engineers in the selection of heat pipes as part of the spacecraft thermal control system, testing methodology, and analytical modeling will also be discussed.

  3. An introduction to optimization

    CERN Document Server

    Chong, Edwin K P

    2013-01-01

    Praise for the Third Edition "". . . guides and leads the reader through the learning path . . . [e]xamples are stated very clearly and the results are presented with attention to detail.""  -MAA Reviews  Fully updated to reflect new developments in the field, the Fourth Edition of Introduction to Optimization fills the need for accessible treatment of optimization theory and methods with an emphasis on engineering design. Basic definitions and notations are provided in addition to the related fundamental background for linear algebra, geometry, and calculus.  This new

  4. Introduction to continuum mechanics

    CERN Document Server

    Lai, W Michael; Rubin, David

    1996-01-01

    Introduction to Continuum Mechanics is a recently updated and revised text which is perfect for either introductory courses in an undergraduate engineering curriculum or for a beginning graduate course.Continuum Mechanics studies the response of materials to different loading conditions. The concept of tensors is introduced through the idea of linear transformation in a self-contained chapter, and the interrelation of direct notation, indicial notation, and matrix operations is clearly presented. A wide range of idealized materials are considered through simple static and dynamic problems, a

  5. Cartesian tensors an introduction

    CERN Document Server

    Temple, G

    2004-01-01

    This undergraduate text provides an introduction to the theory of Cartesian tensors, defining tensors as multilinear functions of direction, and simplifying many theorems in a manner that lends unity to the subject. The author notes the importance of the analysis of the structure of tensors in terms of spectral sets of projection operators as part of the very substance of quantum theory. He therefore provides an elementary discussion of the subject, in addition to a view of isotropic tensors and spinor analysis within the confines of Euclidean space. The text concludes with an examination of t

  6. Introduction to cluster dynamics

    CERN Document Server

    Reinhard, Paul-Gerhard

    2008-01-01

    Clusters as mesoscopic particles represent an intermediate state of matter between single atoms and solid material. The tendency to miniaturise technical objects requires knowledge about systems which contain a ""small"" number of atoms or molecules only. This is all the more true for dynamical aspects, particularly in relation to the qick development of laser technology and femtosecond spectroscopy. Here, for the first time is a highly qualitative introduction to cluster physics. With its emphasis on cluster dynamics, this will be vital to everyone involved in this interdisciplinary subje

  7. Introduction to superconductivity

    CERN Document Server

    Rose-Innes, A C

    1978-01-01

    Introduction to Superconductivity differs from the first edition chiefly in Chapter 11, which has been almost completely rewritten to give a more physically-based picture of the effects arising from the long-range coherence of the electron-waves in superconductors and the operation of quantum interference devices. In this revised second edition, some further modifications have been made to the text and an extra chapter dealing with """"high-temperature"""" superconductors has been added. A vast amount of research has been carried out on these since their discovery in 1986 but the results, both

  8. Introduction to information retrieval

    CERN Document Server

    Manning, Christopher D; Schütze, Hinrich

    2008-01-01

    Class-tested and coherent, this textbook teaches classical and web information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. It gives an up-to-date treatment of all aspects of the design and implementation of systems for gathering, indexing, and searching documents; methods for evaluating systems; and an introduction to the use of machine learning methods on text collections. All the important ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced un

  9. Introduction to Econophysics

    Science.gov (United States)

    Mantegna, Rosario N.; Stanley, H. Eugene

    2007-08-01

    Preface; 1. Introduction; 2. Efficient market hypothesis; 3. Random walk; 4. Lévy stochastic processes and limit theorems; 5. Scales in financial data; 6. Stationarity and time correlation; 7. Time correlation in financial time series; 8. Stochastic models of price dynamics; 9. Scaling and its breakdown; 10. ARCH and GARCH processes; 11. Financial markets and turbulence; 12. Correlation and anti-correlation between stocks; 13. Taxonomy of a stock portfolio; 14. Options in idealized markets; 15. Options in real markets; Appendix A: notation guide; Appendix B: martingales; References; Index.

  10. Theoretical astrophysics an introduction

    CERN Document Server

    Bartelmann, Matthias

    2013-01-01

    A concise yet comprehensive introduction to the central theoretical concepts of modern astrophysics, presenting hydrodynamics, radiation, and stellar dynamics all in one textbook. Adopting a modular structure, the author illustrates a small number of fundamental physical methods and principles, which are sufficient to describe and understand a wide range of seemingly very diverse astrophysical phenomena and processes. For example, the formulae that define the macroscopic behavior of stellar systems are all derived in the same way from the microscopic distribution function. This function it

  11. Introduction to spectral theory

    CERN Document Server

    Levitan, B M

    1975-01-01

    This monograph is devoted to the spectral theory of the Sturm- Liouville operator and to the spectral theory of the Dirac system. In addition, some results are given for nth order ordinary differential operators. Those parts of this book which concern nth order operators can serve as simply an introduction to this domain, which at the present time has already had time to become very broad. For the convenience of the reader who is not familar with abstract spectral theory, the authors have inserted a chapter (Chapter 13) in which they discuss this theory, concisely and in the main without proofs, and indicate various connections with the spectral theory of differential operators.

  12. An introduction to cosmology

    CERN Document Server

    Narlikar, Jayant Vishnu

    2002-01-01

    The third edition of this successful textbook is fully updated and includes important recent developments in cosmology. It begins with an introduction to cosmology and general relativity, and goes on to cover the mathematical models of standard cosmology. The physical aspects of cosmology, including primordial nucleosynthesis, the astroparticle physics of inflation, and the current ideas on structure formation are discussed. Alternative models of cosmology are reviewed, including the model of Quasi-Steady State Cosmology, which has recently been proposed as an alternative to Big Bang Cosmology.

  13. Introduction to cardinal arithmetic

    CERN Document Server

    Holz, M; Weitz, E

    1999-01-01

    This book is an introduction into modern cardinal arithmetic in the frame of the axioms of Zermelo-Fraenkel set theory together with the axiom of choice (ZFC). A first part describes the classical theory developed by Bernstein, Cantor, Hausdorff, König and Tarski between 1870 and 1930. Next, the development in the 1970s led by Galvin, Hajnal and Silver is characterized. The third part presents the fundamental investigations in pcf theory which have been worked out by Shelah to answer the questions left open in the 1970s.Reviews:'The authors aim their text at beginners in set theory. They start

  14. Introduction to EMC

    CERN Document Server

    Scott, John

    1997-01-01

    This is the clear guide for non-specialists to electromagnetic compatability (EMC), the effects of electromagnetic radiation and the European EMC Directive which is now in force. This book helps by explaining the basic principles of EMC, how it may be controlled in practice through filtering, shielding, appropriate printed circuit board design, and other means. Electrostatic discharge (ESD) and surge protection are discussed. The growing concern about the effects of electromagnetic waves and fields on health are examined in detail.This introduction provides beginners, technical and

  15. Introduction to superconductivity

    CERN Document Server

    Darriulat, Pierre

    1998-01-01

    The lecture series will address physicists, such as particle and nuclear physicists, familiar with non-relativistic quantum mechanics but not with solid state physics. The aim of this introduction to low temperature superconductivity is to give sufficient bases to the student for him/her to be able to access the scientific literature on this field. The five lectures will cover the following topics : 1. Normal metals, free electron gas, chambers equation. 2. Cooper pairs, the BCS ground state, quasi particle excitations. 3. DC superconductivity, Meissner state, dirty superconductors.4. Self consistent approach, Ginsburg Landau equations, Abrikosov fluxon lattice. 5. Josephson effects, high temperature superconductivity.

  16. Introduction to combinatorial designs

    CERN Document Server

    Wallis, WD

    2007-01-01

    Combinatorial theory is one of the fastest growing areas of modern mathematics. Focusing on a major part of this subject, Introduction to Combinatorial Designs, Second Edition provides a solid foundation in the classical areas of design theory as well as in more contemporary designs based on applications in a variety of fields. After an overview of basic concepts, the text introduces balanced designs and finite geometries. The author then delves into balanced incomplete block designs, covering difference methods, residual and derived designs, and resolvability. Following a chapter on the e

  17. Statistics a biomedical introduction

    CERN Document Server

    Brown, Byron Wm

    2009-01-01

    CHAPTER 1: Introduction 1 CHAPTER 2: Elementary Rules of Probability 13 CHAPTER 3: Populations, Samples, and the Distribution of the Sample Mean 37 1. Populations and Distributions 38 2. Sampling from Finite Populations 64 3. The Distribution of the Sample Mean 72 CHAPTER 4: Analysis of Matched Pairs Using Sample Means 85 1. A Confidence Interval for the Treatment Effect 86 2. A Hypothesis Test for the Treatment Effect 96 3. Determining the Sample Size 102 CHAPTER 5: Analysis of the Two-Sample Location Problem Using Sample Means 109 1. A Confidence Interval for the Diffe

  18. Game Theory An Introduction

    CERN Document Server

    Barron, E N

    2008-01-01

    A fundamental introduction to modern game theory from a mathematical viewpoint. Game theory arises in almost every fact of human and inhuman interaction since oftentimes during these communications objectives are opposed or cooperation is viewed as an option. From economics and finance to biology and computer science, researchers and practitioners are often put in complex decision-making scenarios, whether they are interacting with each other or working with evolving technology and artificial intelligence. Acknowledging the role of mathematics in making logical and advantageous decisions, Game

  19. Introduction to laser technology

    CERN Document Server

    Hitz, C Breck; Hecht, Jeff

    2012-01-01

    The only introductory text on the market today that explains the underlying physics and engineering applicable to all lasersAlthough lasers are becoming increasingly important in our high-tech environment, many of the technicians and engineers who install, operate, and maintain them have had little, if any, formal training in the field of electro-optics. This can result in less efficient usage of these important tools. Introduction to Laser Technology, Fourth Edition provides readers with a good understanding of what a laser is and what it can and cannot do. The book explains what types of las.

  20. Introduction to differentiable manifolds

    CERN Document Server

    Auslander, Louis

    2009-01-01

    The first book to treat manifold theory at an introductory level, this text surveys basic concepts in the modern approach to differential geometry. The first six chapters define and illustrate differentiable manifolds, and the final four chapters investigate the roles of differential structures in a variety of situations.Starting with an introduction to differentiable manifolds and their tangent spaces, the text examines Euclidean spaces, their submanifolds, and abstract manifolds. Succeeding chapters explore the tangent bundle and vector fields and discuss their association with ordinary diff

  1. Introduction: Mirrors of Passing

    DEFF Research Database (Denmark)

    Seebach, Sophie Hooge; Willerslev, Rane

    How is death, time, and materiality interconnected? How to approach an understanding of the world of the dead? In this introduction, we seek to understand how the experience of material decay, of the death of those around us, makes us aware of the passing of time. Through the literary lens of Neil...... Gaiman’s The Graveyard Book, we explore how the world of the dead and the world of the living can intersect; how time and materiality shifts and changes depending on who experiences it. These revelations, based on fiction, provide a mirror through which the reader can experience the varied chapters...

  2. Introduction to functional methods

    International Nuclear Information System (INIS)

    Faddeev, L.D.

    1976-01-01

    The functional integral is considered in relation to Feynman diagrams and phase space. The holomorphic form of the functional integral is then discussed. The main problem of the lectures, viz. the construction of the S-matrix by means of the functional integral, is considered. The functional methods described explicitly take into account the Bose statistics of the fields involved. The different procedure used to treat fermions is discussed. An introduction to the problem of quantization of gauge fields is given. (B.R.H.)

  3. Abdominal imaging: An introduction

    International Nuclear Information System (INIS)

    Frick, M.P.; Feinberg, S.B.

    1986-01-01

    This nine-chapter book gives an overview of the integrated approach to abdominal imaging. Chapter 1 provides an introduction to the physics used in medical imaging; chapter 2 is on the selection of imaging modalities. These are followed by four chapters that deal, respectively, with plain radiography, computed tomographic scanning, sonography, and nuclear imaging, as applied to the abdomen. Two chapters then cover contrast material-enhanced studies of the gastrointestinal (GI) tract: one focusing on technical considerations; the other, on radiologic study of disease processes. The final chapter is a brief account of different interventional procedures

  4. Introduction to Waste Engineering

    DEFF Research Database (Denmark)

    Christensen, Thomas Højlund

    2011-01-01

    Solid waste management as introduced in Chapter 1.1 builds in many ways on engineering. Waste engineering here means the skills and ability to understand quantitatively how a waste management system works in such a detail that waste management can be planned, facilities can be designed and sited......) regional plans for waste management, including (3) the selection of main management technologies and siting of facilities, (4) the design of individual technological units and, for example, (5) the operation of recycling schemes within a municipality. This chapter gives an introduction to waste engineering...

  5. Quantum chemistry an introduction

    CERN Document Server

    Kauzmann, Walter

    2013-01-01

    Quantum Chemistry: An Introduction provides information pertinent to the fundamental aspects of quantum mechanics. This book presents the theory of partial differentiation equations by using the classical theory of vibrations as a means of developing physical insight into this essential branch of mathematics.Organized into five parts encompassing 16 chapters, this book begins with an overview of how quantum mechanical deductions are made. This text then describes the achievements and limitations of the application of quantum mechanics to chemical problems. Other chapters provide a brief survey

  6. Introduction to information science

    CERN Document Server

    Bawden, David

    2012-01-01

    This landmark textbook takes a whole subject approach to Information Science as a discipline. Introduced by leading international scholars and offering a global perspective on the discipline, this is designed to be the standard text for students worldwide. The authors' expert narrative guides you through each of the essential building blocks of information science offering a concise introduction and expertly chosen further reading and resources.Critical topics covered include:foundations: concepts, theories and historical perspectivesorganising and retrieving Information information behaviour,

  7. Introduction to data technologies

    CERN Document Server

    Murrell, Paul

    2009-01-01

    Providing key information on how to work with research data, Introduction to Data Technologies presents ideas and techniques for performing critical, behind-the-scenes tasks that take up so much time and effort yet typically receive little attention in formal education. With a focus on computational tools, the book shows readers how to improve their awareness of what tasks can be achieved and describes the correct approach to perform these tasks. Practical examples demonstrate the most important pointsThe author first discusses how to write computer code using HTML as a concrete example. He th

  8. Introduction to plasma engineering

    International Nuclear Information System (INIS)

    Roth, J.R.

    1988-01-01

    The author has begun writing a textbook entitled Introduction to Plasma Engineering, which is intended for upper division undergraduates or professionals who are entering the field. This paper features a detailed topical outline of all 20 chapters of the book. The text is organized so that the first five chapters cover plasma physics and basic principles; the next 13 chapters cover the most important engineering applications of plasmas, in order of increasing plasma energy/number density; and two final chapters cover plasma diagnostics and magnetic coil design

  9. Theoretical Optics An Introduction

    CERN Document Server

    Römer, Hartmann

    2004-01-01

    Starting from basic electrodynamics, this volume provides a solid, yet concise introduction to theoretical optics, containing topics such as nonlinear optics, light-matter interaction, and modern topics in quantum optics, including entanglement, cryptography, and quantum computation. The author, with many years of experience in teaching and research, goes way beyond the scope of traditional lectures, enabling readers to keep up with the current state of knowledge. Both content and presentation make it essential reading for graduate and phD students as well as a valuable reference for researche

  10. History as Modernity. Introduction

    Directory of Open Access Journals (Sweden)

    Pierangelo Schiera

    2016-12-01

    Full Text Available The introduction starts from the exhaustion of modernity, drawing the fundamental lines of its development inside Western historical experience. The end of the political nexus between theology and politics, the evanescence of nation-state sovereignty, the check of great historical interpretations reveal the necessity of new categories and new organizational models, able to make us answer to the violence that the ongoing processes are liberating. Schiera underlines in particular the relevance of the administrative apparatus because of its capacity to link the global government with global organization, human rights and the commons.

  11. Introduction to bioinformatics.

    Science.gov (United States)

    Can, Tolga

    2014-01-01

    Bioinformatics is an interdisciplinary field mainly involving molecular biology and genetics, computer science, mathematics, and statistics. Data intensive, large-scale biological problems are addressed from a computational point of view. The most common problems are modeling biological processes at the molecular level and making inferences from collected data. A bioinformatics solution usually involves the following steps: Collect statistics from biological data. Build a computational model. Solve a computational modeling problem. Test and evaluate a computational algorithm. This chapter gives a brief introduction to bioinformatics by first providing an introduction to biological terminology and then discussing some classical bioinformatics problems organized by the types of data sources. Sequence analysis is the analysis of DNA and protein sequences for clues regarding function and includes subproblems such as identification of homologs, multiple sequence alignment, searching sequence patterns, and evolutionary analyses. Protein structures are three-dimensional data and the associated problems are structure prediction (secondary and tertiary), analysis of protein structures for clues regarding function, and structural alignment. Gene expression data is usually represented as matrices and analysis of microarray data mostly involves statistics analysis, classification, and clustering approaches. Biological networks such as gene regulatory networks, metabolic pathways, and protein-protein interaction networks are usually modeled as graphs and graph theoretic approaches are used to solve associated problems such as construction and analysis of large-scale networks.

  12. Introduction to nonlinear acoustics

    Science.gov (United States)

    Bjørnø, Leif

    2010-01-01

    A brief review of the basic principles of fluid mechanics needed for development of linear and nonlinear ultrasonic concepts will be given. The fundamental equations of nonlinear ultrasonics will be derived and their physical properties explained. It will be shown how an originally monochromatic finite-amplitude ultrasonic wave, due to nonlinear effects, will distort during its propagation in time and space to form higher harmonics to its fundamental frequency. The concepts of shock formation will be presented. The material nonlinearity, described by the nonlinearity parameter B/A of the material, and the convective nonlinearity, described by the ultrasonic Mach Number, will be explained. Two procedures for determination of B/A will briefly be described and some B/A-values characterizing biological materials will be presented. Shock formation, described by use of the Goldberg Number,and Ultrasonic Saturation will be discussed.. An introduction to focused ultrasonic fields will be given and it will be shown how the ultrasonic intensity will vary axially and laterally in and near the focal region and how the field parameters of interest to biomedical applications may be described by use of the KZK-Model. Finally, an introduction will be given to the parametric acoustic array formed by mixing and interaction of two monochromatic, finite-amplitude ultrasonic waves in a liquid and the potentials of this mixing process in biomedical ultrasound will briefly be mentioned.

  13. Introduction to Computational Plasticity

    International Nuclear Information System (INIS)

    Hartley, P

    2006-01-01

    The focus of the book on computational plasticity embodies techniques of relevance not only to academic researchers, but also of interest to industrialists engaged in the production of components using bulk or sheet forming processes. Of particular interest is the guidance on how to create modules for use with the commercial system Abaqus for specific types of material behaviour. The book is in two parts, the first of which contains six chapters, starting with microplasticity, but predominantly on continuum plasticity. The first chapter on microplasticty gives a brief description of the grain structure of metals and the existence of slip systems within the grains. This provides an introduction to the concept of incompressibility during plastic deformation, the nature of plastic yield and the importance of the critically resolved shear stress on the slip planes (Schmid's law). Some knowledge of the notation commonly used to describe slip systems is assumed, which will be familiar to students of metallurgy, but anyone with a more general engineering background may need to undertake additional reading to understand the various descriptions. Chapter two introduces one of several yield criteria, that normally attributed to von Mises (though historians of mechanics might argue over who was first to develop the theory of yielding associated with strain energy density), and its two or three-dimensional representation as a yield surface. The expansion of the yield surface during plastic deformation, its translation due to kinematic hardening and the Bauschinger effect in reversed loading are described with a direct link to the material stress-strain curve. The assumption, that the increment of strain is normal to the yield surface, the normality principle, is introduced. Uniaxial loading of an elastic-plastic material is used as an example in which to develop expressions to describe increments in stress and strain. The full presentation of numerous expressions, tensors and

  14. Estimation of genetic risk and detriment from barite examinations of the digestive system in Malaga (Spain); Estimacion de riesgo genetico y detrimento en exploraciones baritadas del aparato digestivo en Malaga (Espana)

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz Cruces, R; Perez Martinez, M; Diez de los Rios Delgado, A. [Grupo de Investigacion en Proteccion Radiologica, Dept. de Radiologia y M.Fisica, Facultad de Medicina, Univ. de Malaga, Malaga (Spain)

    1997-11-01

    The objective of the study is to estimate the populations involved in barite examinations of the digestive apparatus. The values of genetically significant dose (DGS), somatically significant dose (DSS) and damage (G) are presented, as derived from the calculation of dose-area, doses in organs and effective doses. At first glance, these complex examinations contribute higher values than the simple examinations. However, our data demonstrate the opposite: DGS = 0.9 mSv; DSS = 1.89 mSv and G = 0.28 radiogenetic cancers per year. These values contradict the data determined for simple examinations for the same population. Although the reasons for this are multiple, the principal underlying cause might be the average age of the patients. These changes are more emphasized in the DGS, which affects the doses in the gonads of the patients after the irradiation. These results must be further compared with other work done in other countries. 10 refs, 1 fig., 1 tab.

  15. Externalities assessment of a coal power plant in the forest ecosystems in Valdecaballeros Area; Estimacion de las externalidades de una central termica de carbon en los ecosistemas forestales del Area de Valdecaballeros

    Energy Technology Data Exchange (ETDEWEB)

    Laforga, P; Planas, B

    1995-07-01

    The book is divided in two parts. The first one analyzes the critical load and level concepts, and the methodological framework for Environmental Impact Statement (E.L.S.). In line with this, critical loads and levels represent the system vulnerability and excedances of critical values identify zones where impacts could occur. These are evaluated according to a set of criteria, talking into account present and future land use, their socio cultural interest, economic value of their natural resources and ecological quality of the whole system. In addition to Environment Impact Statement of air pollutants, the proposed formalism allows assessing the external cost of gaseous emission. The second part applies the developed ideas to a practical case: a hypothetical coal power plant on Valdecaballeros (Badajoz, Spain). Environmental impact on forestry ecosystems is studied on a 70 km radius area around the plant. The assessment of the external costs rely on yield losses associated with gaseous emission of the hypothetical plant. (Author) 100 refs.

  16. Optimal estimate of the coolant flow in the assemblies of a BWR of natural circulation in real time; Estimacion optima del flujo de refrigerante en los ensambles de un BWR de circulacion natural en tiempo real

    Energy Technology Data Exchange (ETDEWEB)

    Valle H, J.; Morales S, J. B. [UNAM, Facultad de Ingenieria, Division de Estudios de Posgrado, Laboratorio de Analisis de Ingenieria de Reactores Nucleares, Paseo Cuauhnahuac 8532, Col. Progreso, 62550 Jiutepec, Morelos (Mexico); Espinosa P, G., E-mail: julfi_jg@yahoo.com.mx [Universidad Autonoma Metropolitana, Unidad Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, 09340 Mexico D. F. (Mexico)

    2012-10-15

    The present work exposes the design and the implementation of an advanced controller that allows estimating the coolant flow in the fuel assemblies of a BWR reactor of natural circulation in real time. To be able to reduce the penalizations that are established in the calculations of the operation limits due to the magnitude of the uncertainties in the coolant flows of a natural circulation reactor, is the objective of this research. In this work the construction of the optimal controller that allows estimating the coolant flows in a fuel channels group of the reactor is shown, as well as the operation of this applied to a reduced order model that simulates the dynamics of a natural circulation reactor. The controller design required of an estimator of the valuation variables not directly of the plant and of the estimates use of the local distributions of the coolant flow. The controller construction of the estimator was based mathematically in the filter Kalman whose algorithm allows to be carried out an advanced control of the system. To prove the estimator operation was development a simplified model that reproduces the basic dynamics of the flowing coolant in the reactor, which works as observer of the system, this model is coupled by means of the estimator controller to a detail model of the plant. The results are presented by means of graphics of the interest variables and the estimate flow, and they are documented in the chart that is presented at the end of this article. (Author)

  17. Estimate of the speed of the refrigerant on a PWR: three way based on the analysis of noise; Estimacion de la volecidad del refrigerante en un PWR: tres vias basadas en el analisis de ruido

    Energy Technology Data Exchange (ETDEWEB)

    Montalvo, C.; Ruiz, M.; Garcia Berrocal, A.

    2014-07-01

    The speed of the refrigerant is a key parameter in the monitoring of the operation a PWR. He know this value and be able to track on-site It allows an understanding of the State of the kernel with valuable information about the refrigerant, and thus behavior on heat exchange which takes place in the reactor. (Author)

  18. Development of a method for the estimation of the useful life of the target in one helical; Desarrollo de un metodo para la estimacion de la vida util del target en una unidad de tomoterapia helicoidal

    Energy Technology Data Exchange (ETDEWEB)

    Delgado Aparicio, J. M.; Garcia Repiso, S.; Martin Rincon, C.; Perez Alvarez, M. E.; Verde Velasco, J. M.; Ramos Pacho, J. A.; Saez Beltran, M.; Gomez Gonzalez, N.; Cons Perez, N.; Sena Espinel, E. de

    2013-07-01

    The objective of this study is to evaluate the effect of this degradation and develop a method for the estimation of the duration of the life of the target independently used internally by the technical service. This can serve to plan the date of intervention when it comes to replace this component. (Author)

  19. Value of levels of complexity in the estimation of the risk in interventional radiology procedures; Valor de los indices de complejidad en la estimacion del riesgo en procedimientos de radiologia intervencionista

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz Cruces, R.; Vano, E.; Hernandez Armas, J.; Carrera Magarino, F.; Rosales, F.; Galan, P.; Solar, M. M.; Perez Martinez, M.; Sanchez Casanueva, R.; Moreno Saiz, C.; Caudepon, F.; Diaz, F.; Gallego Solar, J. J.; Martin-Palanca, A.; Ruiz Munoz-Canela, J. J.; Moreno Rodriguez, F.; Gonzalez de Garay, M.; Canis, M.; Lopez Medina, A.; Moreno Sachez, T.; Pastor Vega, J. M.

    2013-07-01

    The interventional Radiology (IR) refers to guided procedures with X rays, to develop a diagnostic and/or therapeutic action both in vascular diseases as non-vascular. The progressive increase in the complexity and diversity of interventional procedures make it difficult to objectify the criteria about the dosage provided to patients who are these techniques. Control of radiation doses administered to patients to limit the risks associated with the use of x-rays is not more than one way of improving procedures. For this reason, already completed the ERRAPRI project, we have developed complexity rates to better assess the radiological risk associated with the procedures carried out in a sample of Spanish hospitals. (Author)

  20. ERRAPRI Project: estimation of radiation risk to patients in interventional radiology, initial results and proposed levels of complexity; Proyecto ERRAPRI: estimacion del riesgo radiologico a los pacientes en radiologia intervencionista. Primeros resultados y propuestas de indices de complejidad

    Energy Technology Data Exchange (ETDEWEB)

    Ruiz Cruces, R.; Vano, E.; Hernandez-Armas, J.; Carrera, F.; Diaz, F.; Gallego Beuther, J. F.; Ruiz Munoz-Canela, J. P.; Sanchez Casanueva, R.; Perez Martinez, M.; Fernandez Soto, J. M.; Munoz, V.; Moreno, F.; Moreno, C.; Martin-Palanca, A.

    2011-07-01

    The project ERRAPRI (2009 - 2012) will assess the most relevant aspects of the radiological risk associated with interventional radiology techniques (IR) guided by fluoroscopy in a sample of Spanish hospitals of three autonomous regions. Specific objectives include: assessing procedural protocols, especially the parameters related to radiation dose and diagnostic information obtained to establish balances cost (radiation risk) benefit to the procedures evaluated, and propose an index of complex procedures on several levels, based on the difficulty of making the same, assessing its relationship with the radiation dose values.

  1. Estimation of the environmental or radiological impact in the event of accidental release of radionuclides in a DCLL fusion reactor; Estimacion del impacto radiologico ambiental en caso de liberacion accidental de radionucleidos en un reactor de fusion DCLL

    Energy Technology Data Exchange (ETDEWEB)

    Palermo, I.; Gomez Ros, J. M.; Sanz, J.; Mota, F.

    2013-07-01

    Tritium production and activation in the LiPb products can pose a radiological risk in the event of accidental release in a fusion reactor. Within the research programme Consolider TECNO{sub F}US (CSD2008-079) fusion technology has developed a design for a reactor with regenerative wrap with dual refrigeration (DCLL). The purpose of this communication is to present estimates of the radiological impact derived from an accidental release of radionuclides from the circuit of LiPb provinients. (Author)

  2. Determination of viscosity of fayalite slags for kv model and measurements by means of inclined plane; Estimacion de la viscosidad de escorias fayaliticas utilizando el modelo de calculo kv y el metodo experimental del plano inclinado

    Energy Technology Data Exchange (ETDEWEB)

    Bazan, V.; Goni, C.; Castella, L.; Brandaleze, E.; Verdeja, L. F.; Parra, R.

    2006-07-01

    The viscosity of the lands represents one of the most relevant variables of most of the processes metallurgical and kinetics of the refine operations, since it is one of the decisive factors of the efficiency in the reactions between metal and lag, as much as slag-refractory. In the last decades, the mathematical models of different metallurgical processes have established methods to predict viscosity of mixtures of oxides fused to high temperatures in function of the chemical composition. The model developed by Toguri, based on the data reported by Johasen and Winterhager et al has proposed the Kv model. The used index it is similar to the relationship used in the steel industry like the basicity index. It is presented in this work values determined of viscosity in experimental form by means of the technique of inclined plane. (Author)

  3. Comparative dosimetric study in the estimation of the dose rate of the Transelektro LGI-01 irradiator; Estudio dosimetrico comparativo en la estimacion de la razon de dosis del irradiador Transelektro LGI-01

    Energy Technology Data Exchange (ETDEWEB)

    Carrasco A, H.; Urena N, F.F. [ININ, A.P. 18-1027, 11801 Mexico D.F. (Mexico)

    2004-07-01

    The {sup 60} Co TRANSELEKTRO, model LGI-0 1, Hungarian, is similar to the Canadian Gamma cell. The evaluation of the dose ratio in the geometric center of the exposition chamber of the LGI-0 1 is presented in this paper. In order to do this two types of dosimeters were used: the alanine, and the L8-C 1 red acrylic (Canadian). Three dosimeters of each type were irradiated at 1, 2, 3, 4, 5, 6, 7 and 8 h. The respective intensities and absorbencies were measured and used to determine the proper absorbed doses and the dose ratio. The results obtained with both dosimeters were compared with the ratio dose that was reported by the Secondary Laboratory of Dosimetric Calibration of the Metrology Department of the ININ, which used a ionization chamber for the calibration of the LGI-0 1. The alanine dosemeter showed a {+-} 1.3% dispersion while with the acrylic dosemeter the dispersion was of {+-} 3.2%, with respect to the value reported by the authorized Calibration Laboratory. This paper was also used to update the calibration table of the L8-C1 red acrylic. (Author)

  4. Microsensors for rapid estimation of the degree of contamination due to organic matter in waste waters; Microsensores para la estimacion rapida del grado de contaminacion por materia organica de las aguas residuales

    Energy Technology Data Exchange (ETDEWEB)

    Orozco Holguin, J.; Fernandez Sanchez, C.; Jimenez Jorquera, C.

    2008-07-01

    The chemical oxygen demand, COD, is an indicative of the contamination grade by organic matter in wastewater effluents. Its measurement is usually performed with conventional instrumentation and techniques which are time-consuming and requires highly pollutant and dangerous reagents. electrochemical oxygen demand, EOD, is proposed as an alternative parameter to COD. This works reports on a chemical microsensor as an attractive option to get this parameter, thanks to its high speed of response, robustness, feasibility and low-cost of production. The microsensor developed, modified with a conductive composite, has been characterized and used to estimate the EOD of wastewater samples coming from a production line of parenteral food and from a wine making process. (Author) 34 refs.

  5. Estimate of the damage in organs induced by neutrons in three-dimensional conformal radiotherapy; Estimacion del dano en organos inducido por neutrones en radioterapia conformada en 3D

    Energy Technology Data Exchange (ETDEWEB)

    Benites R, J. L. [Centro Estatal de Cancerologia de Nayarit, Servicio de Seguridad Radiologica, Calzada de la Cruz 118 sur, 63000 Tepic, Nayarit (Mexico); Vega C, H. R. [Universidad Autonoma de Zacatecas, Unidad Academica de Estudios Nucleares, Cipres No. 10, Fracc. La Penuela, 98068 Zacatecas (Mexico); Uribe, M. del R., E-mail: jlbenitesr@prodigy.net.mx [Instituto Tecnico Superior de Radiologia, Calle Leon No. 129, 63000 Tepic, Nayarit (Mexico)

    2014-08-15

    By means of Monte Carlo methods was considered the damage in the organs, induced by neutrons, of patients with cancer that receive treatment in modality of three-dimensional conformal radiotherapy (3D-CRT) with lineal accelerator Varian Ix. The objective of this work was to estimate the damage probability in radiotherapy patients, starting from the effective dose by neutrons in the organs and tissues out of the treatment region. For that a three-dimensional mannequin of equivalent tissue of 30 x 100 x 30 cm{sup 3} was modeled and spherical cells were distributed to estimate the Kerma in equivalent tissue and the absorbed dose by neutrons. With the absorbed dose the effective dose was calculated using the weighting factors for the organ type and radiation type. With the effective dose and the damage factors, considered in the ICRP 103, was considered the probability of damage induction in organs. (Author)

  6. Changes in the AIDS epidemiologic situation in Puerto Rico following health care reform and the introduction of HAART Cambios en la situación epidemiológica del sida en Puerto Rico tras la reforma sanitaria y la introducción de la TARGA

    Directory of Open Access Journals (Sweden)

    Doris V. Báez-Feliciano

    2005-02-01

    Full Text Available OBJECTIVES: To compare the occurrence of AIDS as well as the sociodemographic and clinical profiles of AIDS patients in Puerto Rico before and after the introduction of highly active antiretroviral therapy (HAART and the privatization of the island’s public health care system. METHODS: We compared the incident AIDS cases for two three-year periods, 1992-1994 and 1998-2000, in four populations: (1 entire United States, (2 Puerto Rico, (3 Bayamón Health Region (located in north-central Puerto Rico, it includes 11 of the island’s 78 municipalities, and (4 an HIV cohort enrolled at the Universidad Central del Caribe (UCC School of Medicine. The UCC is located in Bayamón, Puerto Rico, within an academic medical complex that houses the teaching hospital (Ramón Ruíz Arnaú University Hospital, the ambulatory health care facilities (Immunology Clinics for patients with HIV, and administrative buildings. This represents the major government-sponsored health care infrastructure within the Bayamón Health Region. RESULTS: Incident AIDS declined substantially between the two periods in each of the four populations studied. The 48.1% decline in Puerto Rico exceeded the 40.9% decline in the United States. The decline in Puerto Rico likely resulted from increased availability and implementation of HAART and the delivery of health care to HIV/AIDS patients in an integrated fashion within each regional ambulatory clinic. In spite of this improvement, the absolute number of patients with AIDS on the island remains high. Substantial resources for treatment and prevention are required. The proportion of new AIDS cases was lower among women, persons 40 years of age or older, the less educated, and those living alone. Injection drug use remains the predominant mode of transmission in Puerto Rico. CONCLUSIONS: Further gains in Puerto Rico’s fight against AIDS will depend on the island’s ability to reduce the transmission that occurs through injection drug

  7. Introduction from the editor

    Directory of Open Access Journals (Sweden)

    Luisa Puig

    2013-02-01

    Full Text Available Los artículos que componen este número de Acta Poetica abarcan una amplia variedad temática en el campo de los estudios humanísticos. No obstante, es posible encontrar entre ellos claras convergencias si los consideramos a partir de una noción fundamental para todos ellos: la de discurso. Esta manera de concebir la práctica “langagière”, oral o escrita, no es moderna —en el mundo clásico ya está presente— aunque es el gran lingüista Émile Benveniste quien la define y describe teóricamente, al concebir una antropología histórica del lenguaje, contribución que cambió el panorama de las ciencias humanas en el siglo pasado (Dessons, Émile Benveniste, 16.

  8. Morbillivirus Infections: An Introduction

    Directory of Open Access Journals (Sweden)

    Rory D. de Vries

    2015-02-01

    Full Text Available Research on morbillivirus infections has led to exciting developments in recent years. Global measles vaccination coverage has increased, resulting in a significant reduction in measles mortality. In 2011 rinderpest virus was declared globally eradicated – only the second virus to be eradicated by targeted vaccination. Identification of new cellular receptors and implementation of recombinant viruses expressing fluorescent proteins in a range of model systems have provided fundamental new insights into the pathogenesis of morbilliviruses, and their interactions with the host immune system. Nevertheless, both new and well-studied morbilliviruses are associated with significant disease in wildlife and domestic animals. This illustrates the need for robust surveillance and a strategic focus on barriers that restrict cross-species transmission. Recent and ongoing measles outbreaks also demonstrate that maintenance of high vaccination coverage for these highly infectious agents is critical. This introduction briefly summarizes the most important current research topics in this field.

  9. Nuclear reactors. Introduction

    International Nuclear Information System (INIS)

    Boiron, P.

    1997-01-01

    This paper is an introduction to the 'nuclear reactors' volume of the Engineers Techniques collection. It gives a general presentation of the different articles of the volume which deal with: the physical basis (neutron physics and ionizing radiations-matter interactions, neutron moderation and diffusion), the basic concepts and functioning of nuclear reactors (possible fuel-moderator-coolant-structure combinations, research and materials testing reactors, reactors theory and neutron characteristics, neutron calculations for reactor cores, thermo-hydraulics, fluid-structure interactions and thermomechanical behaviour of fuels in PWRs and fast breeder reactors, thermal and mechanical effects on reactors structure), the industrial reactors (light water, pressurized water, boiling water, graphite moderated, fast breeder, high temperature and heavy water reactors), and the technology of PWRs (conceiving and building rules, nuclear parks and safety, reactor components and site selection). (J.S.)

  10. Introduction and Overview

    International Nuclear Information System (INIS)

    Mathews, J.T.

    1991-01-01

    The author introduces a collection of papers by US scientists concerned with the need for a regime to control global warming. The papers were prepared in the interest of stimulating the widest possible consideration of the choices that may be faced at the United Nations Conference on Environment and Development in June of 1992. Several papers present the argument that a climate regime will take the form of a general framework convention followed by implementing protocols, following the model of the Vienna convention and its subsequent Montreal protocol. Subsequent papers shift the focus from the form of specific agreements to the continuing process of which treaties are a part. The author follows this introduction with her own viewpoint of strategies for a regime to control greenhouse warming

  11. Introduction to dynamics

    CERN Document Server

    Pfeiffer, Friedrich

    2015-01-01

    This concise textbook for students preferably of a postgraduate level, but also for engineers in practice, contains the basic kinematical and kinetic structures of dynamics together with carefully selected applications. The book is a condensed introduction to the fundamental laws of kinematics and kinetics, on the most important principles of mechanics and presents the equations of motion in the form of Lagrange and Newton-Euler. Selected problems of linear and nonlinear dynamics are treated, as well as problems of vibration formation. The presented selection of topics gives a useful basis for stepping into more advanced problems of dynamics. The contents of this book represent the result of a regularly revised course, which has been and still is given for masters students at the Technische Universität München. .

  12. Introduction to computer ethics

    Directory of Open Access Journals (Sweden)

    Ćorić Dragana M.

    2015-01-01

    Full Text Available Ethics is becoming one of the most often used but also misinter­preted words. It is often taken as an additional, corrective parameter to the policies and strategies that has to be adopted in the area of political works, environment, business, and medicine. Computer ethics thus makes the latest ethical discipline in the scientific sky. But its roots, as it was the case with environmental ethics, ranging decades; only the speech and the use of the same, as well as discussions on the postulates of computer ethics, are the results of rapid IT development in the last decade or two. In this paper, according to the title, will be shown introduction to computer ethics-its basis, the most important representatives, as well as the most important succession.

  13. Solar energy an introduction

    CERN Document Server

    Mackay, Michael E

    2015-01-01

    Solar Energy presents an introduction to all aspects of solar energy, from photovoltaic devices to active and passive solar thermal energy conversion, giving both a detailed and broad perspective of the field. It is aimed at the beginner involved in solar energy or a related field, or for someone wanting to gain a broader perspective of solar energy technologies. A chapter considering solar radiation, basic principles applied to solar energy, semiconductor physics, and light absorption brings the reader on equal footing with the technology of either solar generated electrical current or useful heat. Details of how a solar cell works and then production of current from a photovoltaic device is discussed. Characterization of a solar cell is examined, allowing one the ability to interpret the current-voltage relation, followed by discussion of parameter extraction from this relation. This information can be used to understand what limits the performance of a given solar cell with the potential to optimize its pe...

  14. An introduction to superprocesses

    CERN Document Server

    Etheridge, Alison M

    2000-01-01

    Over the past 20 years, the study of superprocesses has expanded into a major industry and can now be regarded as a central theme in modern probability theory. This book is intended as a rapid introduction to the subject, geared toward graduate students and researchers in stochastic analysis. A variety of different approaches to the superprocesses emerged over the last ten years. Yet no one approach superseded any others. In this book, readers are exposed to a number of different ways of thinking about the processes, and each is used to motivate some key results. The emphasis is on why results are true rather than on rigorous proof. Specific results are given, including extensive references to current literature for their general form.

  15. Superconductivity an introduction

    CERN Document Server

    Kleiner, Reinhold

    2016-01-01

    The third edition of this proven text has been developed further in both scope and scale to reflect the potential for superconductivity in power engineering to increase efficiency in electricity transmission or engines. The landmark reference remains a comprehensive introduction to the field, covering every aspect from fundamentals to applications, and presenting the latest developments in organic superconductors, superconducting interfaces, quantum coherence, and applications in medicine and industry. Due to its precise language and numerous explanatory illustrations, it is suitable as an introductory textbook, with the level rising smoothly from chapter to chapter, such that readers can build on their newly acquired knowledge. The authors cover basic properties of superconductors and discuss stability and different material groups with reference to the latest and most promising applications, devoting the last third of the book to applications in power engineering, medicine, and low temperature physics. An e...

  16. Semiconductor physics an introduction

    CERN Document Server

    Seeger, Karlheinz

    1999-01-01

    Semiconductor Physics - An Introduction - is suitable for the senior undergraduate or new graduate student majoring in electrical engineering or physics. It will also be useful to solid-state scientists and device engineers involved in semiconductor design and technology. The text provides a lucid account of charge transport, energy transport and optical processes, and a detailed description of many devices. It includes sections on superlattices and quantum well structures, the effects of deep-level impurities on transport, the quantum Hall effect and the calculation of the influence of a magnetic field on the carrier distribution function. This 6th edition has been revised and corrected, and new sections have been added to different chapters.

  17. Introduction to thermoelectricity

    CERN Document Server

    Goldsmid, H Julian

    2016-01-01

    This book is a comprehensive introduction to all aspects of thermoelectric energy conversion. It covers both theory and practice. The book is timely as it refers to the many improvements that have come about in the last few years through the use of nanostructures. The concept of semiconductor thermoelements led to major advances during the second half of the twentieth century, making Peltier refrigeration a widely used technique. The latest materials herald thermoelectric generation as the preferred technique for exploiting low-grade heat. The book shows how progress has been made by increasing the thermal resistivity of the lattice until it is almost as large as it is for glass. It points the way towards the attainment of similar improvements in the electronic parameters. It does not neglect practical considerations, such as the desirability of making thermocouples from inexpensive and environmentally acceptable materials. The second edition was extended to also include recent advances in thermoelectric ener...

  18. Introduction to biosensors.

    Science.gov (United States)

    Bhalla, Nikhil; Jolly, Pawan; Formisano, Nello; Estrela, Pedro

    2016-06-30

    Biosensors are nowadays ubiquitous in biomedical diagnosis as well as a wide range of other areas such as point-of-care monitoring of treatment and disease progression, environmental monitoring, food control, drug discovery, forensics and biomedical research. A wide range of techniques can be used for the development of biosensors. Their coupling with high-affinity biomolecules allows the sensitive and selective detection of a range of analytes. We give a general introduction to biosensors and biosensing technologies, including a brief historical overview, introducing key developments in the field and illustrating the breadth of biomolecular sensing strategies and the expansion of nanotechnological approaches that are now available. © 2016 The Author(s). Published by Portland Press Limited on behalf of the Biochemical Society.

  19. Introduction to morphogenetic computing

    CERN Document Server

    Resconi, Germano; Xu, Guanglin

    2017-01-01

    This book offers a concise introduction to morphogenetic computing, showing that its use makes global and local relations, defects in crystal non-Euclidean geometry databases with source and sink, genetic algorithms, and neural networks more stable and efficient. It also presents applications to database, language, nanotechnology with defects, biological genetic structure, electrical circuit, and big data structure. In Turing machines, input and output states form a system – when the system is in one state, the input is transformed into output. This computation is always deterministic and without any possible contradiction or defects. In natural computation there are defects and contradictions that have to be solved to give a coherent and effective computation. The new computation generates the morphology of the system that assumes different forms in time. Genetic process is the prototype of the morphogenetic computing. At the Boolean logic truth value, we substitute a set of truth (active sets) values with...

  20. Introduction to bosonization

    International Nuclear Information System (INIS)

    Miranda, E.

    2003-01-01

    This is a pedagogical introduction to the general technique of bosonization of one-dimensional systems starting from scratch and assuming very little besides basic quantum mechanics and second quantization. The formalism is developed in a self-contained fashion and applied to the spinless and spin-1/2 Luttinger models, working out both single and two particle correlation functions. The implications of these results for the specific cases of the (anisotropic) Heisenberg and the Hubbard models are discussed. Although everything in these notes can be found in the published literature, detailed and explicit calculations of most of the results are given, which may prove useful to beginning graduate students or researchers in this area. (author)

  1. Introduction to complex plasmas

    International Nuclear Information System (INIS)

    Bonitz, Michael; Ludwig, Patrick; Horing, Norman

    2010-01-01

    Complex plasmas differ from traditional plasmas in many ways: these are low-temperature high pressure systems containing nanometer to micrometer size particles which may be highly charged and strongly interacting. The particles may be chemically reacting or be in contact with solid surfaces, and the electrons may show quantum behaviour. These interesting properties have led to many applications of complex plasmas in technology, medicine and science. Yet complex plasmas are extremely complicated, both experimentally and theoretically, and require a variety of new approaches which go beyond standard plasma physics courses. This book fills this gap presenting an introduction to theory, experiment and computer simulation in this field. Based on tutorial lectures at a very successful recent Summer Institute, the presentation is ideally suited for graduate students, plasma physicists and experienced undergraduates. (orig.)

  2. Introduction to Complex Plasmas

    CERN Document Server

    Bonitz, Michael; Ludwig, Patrick

    2010-01-01

    Complex plasmas differ from traditional plasmas in many ways: these are low-temperature high pressure systems containing nanometer to micrometer size particles which may be highly charged and strongly interacting. The particles may be chemically reacting or be in contact with solid surfaces, and the electrons may show quantum behaviour. These interesting properties have led to many applications of complex plasmas in technology, medicine and science. Yet complex plasmas are extremely complicated, both experimentally and theoretically, and require a variety of new approaches which go beyond standard plasma physics courses. This book fills this gap presenting an introduction to theory, experiment and computer simulation in this field. Based on tutorial lectures at a very successful recent Summer Institute, the presentation is ideally suited for graduate students, plasma physicists and experienced undergraduates.

  3. Introduction to biomedical engineering

    CERN Document Server

    Enderle, John D; Blanchard, Susan M

    2005-01-01

    Under the direction of John Enderle, Susan Blanchard and Joe Bronzino, leaders in the field have contributed chapters on the most relevant subjects for biomedical engineering students. These chapters coincide with courses offered in all biomedical engineering programs so that it can be used at different levels for a variety of courses of this evolving field. Introduction to Biomedical Engineering, Second Edition provides a historical perspective of the major developments in the biomedical field. Also contained within are the fundamental principles underlying biomedical engineering design, analysis, and modeling procedures. The numerous examples, drill problems and exercises are used to reinforce concepts and develop problem-solving skills making this book an invaluable tool for all biomedical students and engineers. New to this edition: Computational Biology, Medical Imaging, Genomics and Bioinformatics. * 60% update from first edition to reflect the developing field of biomedical engineering * New chapters o...

  4. I-Introduction

    International Nuclear Information System (INIS)

    1998-01-01

    In this report, each sector starts with an introduction presenting the state of each sector in Lebanon, followed by the methodology adopted in order to compute emissions of greenhouse gases by sources and removals by sinks, in accordance with IPCC guidelines, complemented by experts' assumptions in estimating greenhouse gases and finally accompanied by the IPCC sectoral tables which present the result obtained in each sector. The report ends with an 'Appendices' chapter which includes all worksheets, showing the computations made resulting in emitted or removed greenhouse gas quantities. This executive summary described in the IPCC summary presents the main results obtained in each sector. In the last paragraph, the global warming potential of the greenhouse gases emitted in Lebanon in 1994 is provided for three calculated time horizons, based on the '1995 IPCC technical summary of working group I' report. (au)

  5. Introduction to Waste Management

    DEFF Research Database (Denmark)

    Christensen, Thomas Højlund

    2011-01-01

    Solid waste management is as old as human civilization, although only considered an engineering discipline for about one century. The change from the previous focus on public cleansing of the cities to modern waste management was primarily driven by industrialization, which introduced new materials...... and chemicals, dramatically changing the types and composition of waste, and by urbanization making waste management in urban areas a complicated and costly logistic operation. This book focuses on waste that commonly appears in the municipal waste management system. This chapter gives an introduction to modern...... waste management, including issues as waste definition, problems associated with waste, waste management criteria and approaches to waste management. Later chapters introduce aspects of engineering (Chapter 1.2), economics (Chapter 1.3) and regulation (Chapter 1.4)....

  6. Photonics an introduction

    CERN Document Server

    Reider, Georg A

    2016-01-01

    This book provides a comprehensive introduction into photonics, from the electrodynamic and quantum mechanic fundamentals to the level of photonic components and building blocks such as lasers, amplifiers, modulators, waveguides, and detectors. The book will serve both as textbook and as a reference work for the advanced student or scientist. Theoretical results are derived from basic principles with convenient, yet state-of-the-art mathematical tools, providing not only deeper understanding but also familiarization with formalisms used in the relevant technical literature and research articles. Among the subject matters treated are polarization optics, pulse and beam propagation, waveguides, light–matter interaction, stationary and transient behavior of lasers, semiconductor optics and lasers (including low-dimensional systems such as quantum wells), detector technology, photometry, and colorimetry. Nonlinear optics are elaborated comprehensively. The book is intended for both students of physics and elect...

  7. Introduction to transonic aerodynamics

    CERN Document Server

    Vos, Roelof

    2015-01-01

    Written to teach students the nature of transonic flow and its mathematical foundation, this book offers a much-needed introduction to transonic aerodynamics. The authors present a quantitative and qualitative assessment of subsonic, supersonic, and transonic flow around bodies in two and three dimensions. The book reviews the governing equations and explores their applications and limitations as employed in modeling and computational fluid dynamics.  Some concepts, such as shock and expansion theory, are examined from a numerical perspective. Others, including shock-boundary-layer interaction, are discussed from a qualitative point of view. The book includes 60 examples and more than 200 practice problems. The authors also offer analytical methods such as Method of Characteristics (MOC) that allow readers to practice with the subject matter.  The result is a wealth of insight into transonic flow phenomena and their impact on aircraft design, including compressibility effects, shock and expansion waves, sho...

  8. Introduction to representation theory

    CERN Document Server

    Etingof, Pavel; Hensel, Sebastian; Liu, Tiankai; Schwendner, Alex

    2011-01-01

    Very roughly speaking, representation theory studies symmetry in linear spaces. It is a beautiful mathematical subject which has many applications, ranging from number theory and combinatorics to geometry, probability theory, quantum mechanics, and quantum field theory. The goal of this book is to give a "holistic" introduction to representation theory, presenting it as a unified subject which studies representations of associative algebras and treating the representation theories of groups, Lie algebras, and quivers as special cases. Using this approach, the book covers a number of standard topics in the representation theories of these structures. Theoretical material in the book is supplemented by many problems and exercises which touch upon a lot of additional topics; the more difficult exercises are provided with hints. The book is designed as a textbook for advanced undergraduate and beginning graduate students. It should be accessible to students with a strong background in linear algebra and a basic k...

  9. Introduction to cosmology

    CERN Document Server

    Ryden, Barbara

    2017-01-01

    This second edition of Introduction to Cosmology is an exciting update of an award-winning textbook. It is aimed primarily at advanced undergraduate students in physics and astronomy, but is also useful as a supplementary text at higher levels. It explains modern cosmological concepts, such as dark energy, in the context of the Big Bang theory. Its clear, lucid writing style, with a wealth of useful everyday analogies, makes it exceptionally engaging. Emphasis is placed on the links between theoretical concepts of cosmology and the observable properties of the universe, building deeper physical insights in the reader. The second edition includes recent observational results, fuller descriptions of special and general relativity, expanded discussions of dark energy, and a new chapter on baryonic matter that makes up stars and galaxies. It is an ideal textbook for the era of precision cosmology in the accelerating universe.

  10. Introduction to supergravity

    CERN Document Server

    Tanii, Yoshiaki

    2014-01-01

    This book is a pedagogical introduction to supergravity, a gravitational field theory that includes supersymmetry (symmetry between bosons and fermions) and is a generalization of Einstein's general relativity. Supergravity provides a low-energy effective theory of superstring theory, which has attracted much attention as a candidate for the unified theory of fundamental particles, and it is a useful tool for studying non-perturbative properties of superstring theory such as D-branes and string duality. This work considers classical supergravities in four and higher spacetime dimensions with their applications to superstring theory in mind. More concretely, it discusses classical Lagrangians (or field equations) and symmetry properties of supergravities. Besides local symmetries, supergravities often have global non-compact symmetries, which play a crucial role in their applications to superstring theory. One of the main features of this book is its detailed discussion of these non-compact symmetries. The aim...

  11. History and General Introduction

    International Nuclear Information System (INIS)

    Dunbar, R.C.

    1991-01-01

    In the domain of analytical mass spectrometry (MS), FT-ICR's place is established as combining particular advantages of extraordinary mass resolution and accuracy, a wide array of sample-ionization techniques, and a uniquely wide range of methods for structure characterization of the primary sample ions. Costs are already attractive compared with other high-performance alternatives, and as both magnets and computers (which comprise much of the expense of FT-ICR hardware) become cheaper and more powerful, the performance/cost ratio for the technique will continue to improve. This paper will provide an introduction to those who have little previous knowledge of the technique; provide an overview of the technique's outstanding areas of scientific and analytical application; and provide some historical perspective on how we reached the present state of the art

  12. Superconductivity an introduction

    CERN Document Server

    Mangin, Philippe

    2017-01-01

    This book proposes a thorough introduction for a varied audience. The reader will master London theory and the Pippard equations, and go on to understand type I and type II superconductors (their thermodynamics, magnetic properties, vortex dynamics, current transport…), Cooper pairs and the results of BCS theory. By studying coherence and flux quantization he or she will be lead to the Josephson effect which, with the SQUID, is a good example of the applications. The reader can make up for any gaps in his knowledge with the use of the appendices, follow the logic behind each model, and assimilate completely the underlying concepts. Approximately 250 illustrations help in developing a thorough understanding. This volume is aimed towards masters and doctoral students, as well as advanced undergraduates, teachers and researchers at all levels coming from a broad range of subjects (chemistry, physics, mechanical and electrical engineering, materials science…). Engineers working in industry will have a useful ...

  13. Introduction to tropical geometry

    CERN Document Server

    Maclagan, Diane

    2015-01-01

    Tropical geometry is a combinatorial shadow of algebraic geometry, offering new polyhedral tools to compute invariants of algebraic varieties. It is based on tropical algebra, where the sum of two numbers is their minimum and the product is their sum. This turns polynomials into piecewise-linear functions, and their zero sets into polyhedral complexes. These tropical varieties retain a surprising amount of information about their classical counterparts. Tropical geometry is a young subject that has undergone a rapid development since the beginning of the 21st century. While establishing itself as an area in its own right, deep connections have been made to many branches of pure and applied mathematics. This book offers a self-contained introduction to tropical geometry, suitable as a course text for beginning graduate students. Proofs are provided for the main results, such as the Fundamental Theorem and the Structure Theorem. Numerous examples and explicit computations illustrate the main concepts. Each of t...

  14. Introduction to thermoelectricity

    CERN Document Server

    Goldsmid, H Julian

    2010-01-01

    Introduction to Thermoelectricity is the latest work by Professor Julian Goldsmid drawing on his 55 years experience in the field. The theory of the thermoelectric and related phenomena is presented in sufficient detail to enable researchers to understand their observations and develop improved thermoelectric materials. The methods for the selection of materials and their improvement are discussed. Thermoelectric materials for use in refrigeration and electrical generation are reviewed. Experimental techniques for the measurement of properties and for the production of thermoelements are described. Special emphasis is placed on nanotechnology which promises to yield great improvements in the efficiency of thermoelectric devices. Chapters are also devoted to transverse thermoelectric effects and thermionic energy conversion, both techniques offering the promise of important applications in the future.

  15. Introduction to general relativity

    CERN Document Server

    Parthasarthy, R

    2016-01-01

    INTRODUCTION TO GENERAL RELATIVITY begins with a description of the geometry of curved space, explaining geodesics, parallel transport, covariant differentiation, geodesic deviation and spacetime symmetry by killing vectors. It then introduces Einstein's theory of gravitation followed by Schwarzschild solution with its relevance to Positive Mass theorem. The three tests for Einstein's gravity are explained. Other exact solutions such as Vaidya, Kerr and Reisner - Nordstrom metric are included. In the Chapter on cosmological solutions, a detailed description of Godel metric is provided. It then introduces five dimensional spacetime of Kaluza showing the unification of gravity with electromagnetism. This is extended to include non-Abelian gauge theory by invoking compact extra dimensions. Explicit expressions in this case for Christoffel connections and ricci tensor are derived and the higher dimensional gravity action is shown to compactification are given.

  16. Introduction to sympersymmetry

    International Nuclear Information System (INIS)

    Mattos, O.A. de.

    1986-01-01

    In the present work, supersymmetry is motivated via the Coleman-Mandula Theorem. Next, we build SUSY' algebra and representations (particularly, field representation). We then introduce the conceots of superspace and superfield, as well as supermultiplets and their invariants. Our next step is to examine simple models, in order to study auxiliary fields and the off-shell representations, to calculate the super-current and to show with super-graphs the loops cancelation (Wess-Zumino) and SUSY breaking (O'Raifeartaigh). Next, we obtain the supersymetric extension of the QED Lagrangean in to different ways, and them we are able to investigate symmetry breaking in supersymmetric gauge theories, and the appearance of Goldstone fermions. Finally, we study n-extended SUSY and the role of central charges, and examine SUSY in d > 4 dimensions and dimensional reduction. We end up with an introduction to Lie groups. (author) [pt

  17. Introduction to variance estimation

    CERN Document Server

    Wolter, Kirk M

    2007-01-01

    We live in the information age. Statistical surveys are used every day to determine or evaluate public policy and to make important business decisions. Correct methods for computing the precision of the survey data and for making inferences to the target population are absolutely essential to sound decision making. Now in its second edition, Introduction to Variance Estimation has for more than twenty years provided the definitive account of the theory and methods for correct precision calculations and inference, including examples of modern, complex surveys in which the methods have been used successfully. The book provides instruction on the methods that are vital to data-driven decision making in business, government, and academe. It will appeal to survey statisticians and other scientists engaged in the planning and conduct of survey research, and to those analyzing survey data and charged with extracting compelling information from such data. It will appeal to graduate students and university faculty who...

  18. Introduction to special relativity

    International Nuclear Information System (INIS)

    Rindler, W.

    1982-01-01

    This is intended as a text for an introductory course on special relativity; it assumes no prior knowledge of relativity. It is intended for the upper undergraduate level and upwards. The first three chapters take a three-dimensional viewpoint for a simple introduction to topics such as the relativity of simultaneity, length contraction, time dilation, the twin paradox and the appearance of moving objects. For the remaining chapters the strongest possible use is made of four-dimensional techniques. Chapter four deals with space-time, chapters five and six with mechanics and electromagnetism. In these a purely synthetic four-tensor approach is adopted. Pure tensor theory is covered in an appendix. The last chapter is on the mechanics of continua. (U.K.)

  19. Introduction to information retrieval

    CERN Document Server

    Manning, Christopher D; Schütze, Hinrich

    2008-01-01

    Class-tested and coherent, this textbook teaches classical and web information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. It gives an up-to-date treatment of all aspects of the design and implementation of systems for gathering, indexing, and searching documents; methods for evaluating systems; and an introduction to the use of machine learning methods on text collections. All the important ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced undergraduates and graduate students in computer science. Based on feedback from extensive classroom experience, the book has been carefully structured in order to make teaching more natural and effective. Slides and additional exercises (with solutions for lecturers) are also available through the book's supporting website to help course instructors prepare their lectures.

  20. Introduction to singularities

    CERN Document Server

    Ishii, Shihoko

    2014-01-01

    This book is an introduction to singularities for graduate students and researchers. It is said that algebraic geometry originated in the seventeenth century with the famous work Discours de la méthode pour bien conduire sa raison, et chercher la vérité dans les sciences by Descartes. In that book he introduced coordinates to the study of geometry. After its publication, research on algebraic varieties developed steadily. Many beautiful results emerged in mathematicians’ works. Most of them were about non-singular varieties. Singularities were considered “bad” objects that interfered with knowledge of the structure of an algebraic variety. In the past three decades, however, it has become clear that singularities are necessary for us to have a good description of the framework of varieties. For example, it is impossible to formulate minimal model theory for higher-dimensional cases without singularities. Another example is that the moduli spaces of varieties have natural compactification, the boundar...

  1. Introduction to multivariate discrimination

    Science.gov (United States)

    Kégl, Balázs

    2013-07-01

    Multivariate discrimination or classification is one of the best-studied problem in machine learning, with a plethora of well-tested and well-performing algorithms. There are also several good general textbooks [1-9] on the subject written to an average engineering, computer science, or statistics graduate student; most of them are also accessible for an average physics student with some background on computer science and statistics. Hence, instead of writing a generic introduction, we concentrate here on relating the subject to a practitioner experimental physicist. After a short introduction on the basic setup (Section 1) we delve into the practical issues of complexity regularization, model selection, and hyperparameter optimization (Section 2), since it is this step that makes high-complexity non-parametric fitting so different from low-dimensional parametric fitting. To emphasize that this issue is not restricted to classification, we illustrate the concept on a low-dimensional but non-parametric regression example (Section 2.1). Section 3 describes the common algorithmic-statistical formal framework that unifies the main families of multivariate classification algorithms. We explain here the large-margin principle that partly explains why these algorithms work. Section 4 is devoted to the description of the three main (families of) classification algorithms, neural networks, the support vector machine, and AdaBoost. We do not go into the algorithmic details; the goal is to give an overview on the form of the functions these methods learn and on the objective functions they optimize. Besides their technical description, we also make an attempt to put these algorithm into a socio-historical context. We then briefly describe some rather heterogeneous applications to illustrate the pattern recognition pipeline and to show how widespread the use of these methods is (Section 5). We conclude the chapter with three essentially open research problems that are either

  2. Introduction to multivariate discrimination

    International Nuclear Information System (INIS)

    Kegl, B.

    2013-01-01

    Multivariate discrimination or classification is one of the best-studied problem in machine learning, with a plethora of well-tested and well-performing algorithms. There are also several good general textbooks [1-9] on the subject written to an average engineering, computer science, or statistics graduate student; most of them are also accessible for an average physics student with some background on computer science and statistics. Hence, instead of writing a generic introduction, we concentrate here on relating the subject to a practitioner experimental physicist. After a short introduction on the basic setup (Section 1) we delve into the practical issues of complexity regularization, model selection, and hyper-parameter optimization (Section 2), since it is this step that makes high-complexity non-parametric fitting so different from low-dimensional parametric fitting. To emphasize that this issue is not restricted to classification, we illustrate the concept on a low-dimensional but non-parametric regression example (Section 2.1). Section 3 describes the common algorithmic-statistical formal framework that unifies the main families of multivariate classification algorithms. We explain here the large-margin principle that partly explains why these algorithms work. Section 4 is devoted to the description of the three main (families of) classification algorithms, neural networks, the support vector machine, and AdaBoost. We do not go into the algorithmic details; the goal is to give an overview on the form of the functions these methods learn and on the objective functions they optimize. Besides their technical description, we also make an attempt to put these algorithm into a socio-historical context. We then briefly describe some rather heterogeneous applications to illustrate the pattern recognition pipeline and to show how widespread the use of these methods is (Section 5). We conclude the chapter with three essentially open research problems that are either

  3. Estimación del descarte por exceso de captura en la pesquería industrial de cerco del stock Norte-Centro de la anchoveta peruana Engraulis ringens a partir de un programa de observación a bordo

    Directory of Open Access Journals (Sweden)

    Josymar Torrejón-Magallanes

    2016-08-01

    Full Text Available En este trabajo se presenta la estimación del descarte por exceso de captura en la pesquería industrial de cerco del stock Norte-Centro de anchoveta peruana. Se define el descarte por exceso de captura, como la porción de captura que se arroja al mar cuando se ha capturado más de lo que la capacidad de bodega de la embarcación puede almacenar. El análisis de estimación para el periodo 2005 - 2014, se realizó a partir del “Programa de observadores a bordo de la flota de cerco” que ejecuta el Instituto del Mar del Perú (IMARPE, en donde 5 837 viajes, que representan el 1.6% de los viajes totales, fueron muestreados. Las metodologías utilizadas en la estimación fueron: Modelo Lineal Generalizado (GLM y el Modelo Delta. Las estimaciones por el Modelo Delta y el GLM fueron diferentes en magnitudes pero similares en tendencias, sin embargo la evaluación del funcionamiento del Modelo Delta, indica que este modelo se ajusta mejor a los datos. El Modelo Delta estimó que la pesquería descarta por exceso de captura entre 2 954 y 199 164 toneladas, con un promedio de 121 312 toneladas para el periodo de estudio, el cual representó una tasa del 2.6% en relación a los desembarques. Se sugiere la incorporación de variables espaciales (p. ej. distancia a la costa, latitud, longitud, físicas (TSM y del comportamiento del cardumen (p.e. agregación, para mejorar el análisis y comprender mejor el comportamiento de este tipo de descarte.

  4. Potencial del Agua del suelo

    Directory of Open Access Journals (Sweden)

    Bustamante Heliodoro

    1986-12-01

    Full Text Available La energía potencial del agua presenta diferencias de un punto del suelo a otro; esas diferencias son las que originan el movimiento del agua de acuerdo a la tendencia universal de la materia en el sentido de moverse de donde la energía potencial es mayor a donde dicha energía es menor. En el suelo el agua en consecuencia se mueve hacia donde su energía decrece hasta lograr su estado de equilibrio. Se desprende entonces que la cantidad de energía potencial absoluta contenida en el agua, no es importante por sí misma, sino por su relación con la energía en diferentes lugares dentro del suelo. El concepto Potencial de agua del suelo es un criterio para esta energía.

  5. Introduction to generalized linear models

    CERN Document Server

    Dobson, Annette J

    2008-01-01

    Introduction Background Scope Notation Distributions Related to the Normal Distribution Quadratic Forms Estimation Model Fitting Introduction Examples Some Principles of Statistical Modeling Notation and Coding for Explanatory Variables Exponential Family and Generalized Linear Models Introduction Exponential Family of Distributions Properties of Distributions in the Exponential Family Generalized Linear Models Examples Estimation Introduction Example: Failure Times for Pressure Vessels Maximum Likelihood Estimation Poisson Regression Example Inference Introduction Sampling Distribution for Score Statistics Taylor Series Approximations Sampling Distribution for MLEs Log-Likelihood Ratio Statistic Sampling Distribution for the Deviance Hypothesis Testing Normal Linear Models Introduction Basic Results Multiple Linear Regression Analysis of Variance Analysis of Covariance General Linear Models Binary Variables and Logistic Regression Probability Distributions ...

  6. Statistical theory a concise introduction

    CERN Document Server

    Abramovich, Felix

    2013-01-01

    Introduction Preamble Likelihood Sufficiency Minimal sufficiency Completeness Exponential family of distributionsPoint Estimation Introduction Maximum likelihood estimation Method of moments Method of least squares Goodness-of-estimation. Mean squared error. Unbiased estimationConfidence Intervals, Bounds, and Regions Introduction Quoting the estimation error Confidence intervalsConfidence bounds Confidence regionsHypothesis Testing Introduction Simple hypothesesComposite hypothesesHypothesis testing and confidence intervals Sequential testingAsymptotic Analysis Introduction Convergence and consistency in MSE Convergence and consistency in probability Convergence in distribution The central limit theorem Asymptotically normal consistency Asymptotic confidence intervals Asymptotic normality of the MLE Multiparameter case Asymptotic distribution of the GLRT. Wilks' theorem.Bayesian Inference Introduction Choice of priors Point estimation Interval estimation. Credible sets. Hypothesis testingElements of Statisti...

  7. Introduction from the Editors

    Directory of Open Access Journals (Sweden)

    José Ricardo Chaves

    2013-05-01

    Full Text Available Las conexiones entre la India y lo que llegaría a denominarse Occidente (Europa y América se remontan hasta los tiempos de Alejandro Magno, cuando en sus desplazamientos geográficos y militares llegaran sus tropas hasta aquellas tierras lejanas. Desde entonces a la fecha ha pasado mucho tiempo y, sin embargo, pese a lo mucho escrito sobre ella (sobre todo en los dos últimos siglos, así como a la industria del turismo y a los adelantos de los medios de comunicación, la India sigue manteniendo una buena carga de asombro y enigma para los occidentales, muchos de los cuales la siguen asociando sobre todo con la religión y el mito, no tanto con la historia y la filosofía, como muy bien lo ha señalado desde el ámbito filosófico Roger-Pol Droit en su libro L’oublide l’Inde. Une amnésie philosophique.

  8. Introduction: The Power of Example

    DEFF Research Database (Denmark)

    Højer, Lars; Bandak, Andreas

    2015-01-01

    It is the contention of this introduction that examples are important prisms through which both reality and anthropological analysis are thought and, equally importantly, reconfigured. The aim of the introduction is to redress the theoretical disregard for exemplification by exploring the persuas....... The introduction further proposes that the example serves to confuse ontological divides, such as the one between theory and ethnography, and also draws attention to the fact that theory is as much suggestive as descriptive....

  9. Introduction to anomalies

    International Nuclear Information System (INIS)

    Alvarez-Gaume, L.

    1986-01-01

    These lectures are dedicated to the study of the recent progress and implications of anomalies in quantum field theory. In this introduction the author recapitulates some of the highlights in the history of the subject. The outline of these lectures is as follows: Section II contains a quick review of spinors in Euclidean and Minkowski space, some other group theory results relevant for the computation of anomalies in various dimensions, and an exposition of the index theorem. Section III starts the analysis of fermion determinants and chiral effective actions by deriving the non-Abelian anomaly from index theory. Using the results of Section II, the anomaly cancellation recently discovered by Green and Schwarz will be presented in Section IV as well as the connection of these results of Section III with the descent equations and the Wess-Zumino-Witten Lagrangians. Section V contains the generalization of anomalies to σ-models and some of its application in string theory. Section VI will deal with the anomalies from the Hamiltonian point of view. An exact formula for the imaginary part of the effective action for chiral fermions in the presence of arbitrary external gauge and gravitational fields will be derived in Section VII, and used in Section VIII for the study of global anomalies. 85 references

  10. Supraconductivité introduction

    CERN Document Server

    Mangin, Philippe

    2013-01-01

    La supraconductivité fait rêver, surtout depuis la découverte de son existence à des températures relativement accessibles. Ses applications sont déjà notables (Imagerie par Résonance Magnétique, futur ITER, NEUROSPIN, SQUID...) et des projets plus futuristes se développent (transport de courant, train en lévitation, moteurs). Le présent ouvrage propose une introduction solide, pour un public assez large. Le lecteur pourra s'initier à la théorie de London et aux équations de Pippard, puis étudier les supraconducteurs de type I et de type II (thermodynamique, magnétisme, dynamique de vortex, transport de courant...), les paires de Cooper et les résultats de la théorie BCS. L'étude de la cohérence et de la quantification du flux conduit à l'effet Josephson qui, avec le SQUID. est un bon exemple d'application. Le lecteur pourra combler certaines de ses lacunes grâce aux compléments, suivre le cheminement d'un modèle et s'approprier les concepts. Environ 250 illustrations en facilitent la...

  11. Introduction: Childhood and Disability.

    Science.gov (United States)

    Salter, Erica K

    2017-09-01

    From growth attenuation therapy for severely developmentally disabled children to the post-natal management of infants with trisomy 13 and 18, pediatric treatment decisions regularly involve assessments of the probability and severity of a child's disability. Because these decisions are almost always made by surrogate decision-makers (parents and caregivers) and because these decision-makers must often make decisions based on both prognostic guesses and potentially biased quality of life judgments, they are among the most ethically complex in pediatric care. As the introduction to HEC Forum's special thematic issue on Childhood and Disability, this article orients the reader to the history of bioethics' relationship to both pediatric ethics and disability studies and introduces the issue's five manuscripts. As clinicians, disability scholars, philosophers and clinical ethicists writing on various aspects of pediatric disability, the articles' authors all invite readers to dig beneath an overly-simplified version of what disability might mean to children and families and instead embrace a posture of genuine humility, recognizing both the limits and harms of traditional medical and bioethical responses (or indifferences) to the disabled child.

  12. Chief Editors’ Introduction

    Directory of Open Access Journals (Sweden)

    Kerry Carrington

    2015-12-01

    Full Text Available It has been a great year for the journal:  our most successful ever. This edition marks three years of publication of the International Journal for Crime, Justice and Social Democracy. In 2015 the journal was selected for inclusion into Scopus and Web of Science data bases. This is a terrific success story and testimony to the high quality of the articles, the editorship, the reviewing and the international readership of the journal. We are grateful as ever to our distinguished International Editorial Board and all our reviewers who are anonymous to readers and authors due to the norms of blind peer reviewing. We also thank the out-going foundational co-editor-in-chief Reece Walters for his efforts in making this journal the success it is. The journal has now surpassed 150,000 abstract views and 100,000 full PDF downloads. This journal is one of only a few in the world of criminology to support fully on-line free-to-download articles, and to promote creative commons copyright: that is, authors’ rights to reproduce their own material. We support the democratisation of knowledge and are delighted to be leaders in high quality international journal publishing.Download the PDF file here for the Chief Editors’ introduction to this issue and be motivated by the eclectic and impressive range of topics offered by our contributors to read further.

  13. Introduction to supersymmetry

    International Nuclear Information System (INIS)

    Schreiber, G.U.

    1987-09-01

    The Dirac equation as a relativistic quantum mechanical equation describing spin-half particles in higher-dimensional space-time is discussed. Clifford algebra in d-dimensional space-time is considered. Also discussed are the discrete symmetries of the Dirac equation, namely: charge conjunction, time reversal and parity or reflection symmetry. The Majorana and Weyl conditions which require the particle wavefunctions to be invariant under particle ↔ antiparticle exchange and left-handed particle ↔ right-handed antiparticle exchange respectively, are investigated. The Poincare group, consisting of the Lorentz group of space rotations, Lorentz boosts and the group of space-time translations, is examined, along with its irreducible representations. The concept of supersymmetry arises out of the generalisation of Lie algebras. An introduction to supersymmetry, as well as the immediate consequences of supersymmetry algebra, is given. Finally, the superspace-superfield approach is introduced. Superspace is a mathematical object which allows a simplification of the formulation of supersymmetry. The advantage of this formulation is that now supersymmetry becomes manifest: it arises naturally just like the Poincare symmetry arises naturally in four-dimensional Minkowski space. 46 refs., 9 figs., 23 tabs

  14. Chemical thermodynamics. An introduction

    Energy Technology Data Exchange (ETDEWEB)

    Keszei, Ernoe [Budapest Univ. (Hungary). Dept. of Physical Chemistry

    2012-07-01

    Eminently suitable as a required textbook comprising complete material for or an undergraduate chemistry major course in chemical thermodynamics. Clearly explains details of formal derivations that students can easily follow and so master applied mathematical operations. Offers problems and solutions at the end of each chapter for self-test and self- or group study. This course-derived undergraduate textbook provides a concise explanation of the key concepts and calculations of chemical thermodynamics. Instead of the usual 'classical' introduction, this text adopts a straightforward postulatory approach that introduces thermodynamic potentials such as entropy and energy more directly and transparently. Structured around several features to assist students' understanding, Chemical Thermodynamics: - Develops applications and methods for the ready treatment of equilibria on a sound quantitative basis. - Requires minimal background in calculus to understand the text and presents formal derivations to the student in a detailed but understandable way. - Offers end-of-chapter problems (and answers) for self-testing and review and reinforcement, of use for self- or group study. This book is suitable as essential reading for courses in a bachelor and master chemistry program and is also valuable as a reference or textbook for students of physics, biochemistry and materials science.

  15. Introduction to safety theory

    International Nuclear Information System (INIS)

    Meyna, A.

    1982-01-01

    After a general introduction to safety theory, safety characteristics are defined and quantified. This is followed by a calculation of the safety characteristics of simple, safety-relevant systems in general and in consideration of common-mode errors. The qualitative and quantitative role of human errors is discussed for various models, and a simple man-machine model is developed for investigation of common-mode errors and human error. The main part of the paper deals with safety analysis in complex systems. After a general review, the common inductive and deductive methods of analysis are presented and commented on and their fields of application discussed. Analytical and simulation codes are presented as methods of evaluation for big, complex event trees - i.e. ''hazard trees in the sense of safety engineering (as a subset of safety relevance). After a basic classification and mathematical formulation of Markovian processes, the author shows that these may be used successfully for calculation of safety characteristics if transition rates are constant and if the number of system states is limited. (orig./RW) [de

  16. Introduction to industrial radiography

    International Nuclear Information System (INIS)

    Abdul Nassir Ibrahim; Azali Muhammad; Ab. Razak Hamzah; Abd. Aziz Mohamed; Mohamad Pauzi Ismail

    2008-01-01

    For the first topic in this book, more on introduction to nondestructive testing, also a little bit on another technique such as magnetic testing, liquid penetrated, ultrasonic testing and others. This book mentions more on radiographic testing and for that, more details on this topic such as history, definition and devices that use in this technique. This radiography testing firstly started with the discovering of x-ray by Wilhelm Roentgen (1895). So, on 1913, David Coolidge successfully invented and developed x-ray tube that could made x-ray more intensified and produced highly penetration forces. Radiography in Malaysia firstly started two years after the discovery made by Wilhelm Roentgen when one hospital here used the x-ray machine for medical purposes. Besides using x-ray, radiography also used gamma rays, and for these purpose, they used Co-60 and Ir-192. Now, more company based on NDT established to provide a service on inspection pipe and others. For filled these requirement, radiographer must take an exam to make them expert and trained well to work in this field. There is no advantage using this technique or other technique. So that's why this book was published to make people understand what is radiographic testing truly.

  17. Women and AIDS: introduction.

    Science.gov (United States)

    Krieger, N; Margo, G

    1991-01-01

    Around the world, more and more women--principally poor women of color--are being diagnosed with and are dying of AIDS, the acquired immune deficiency syndrome. Yet, effective and appropriate prevention programs for women are sorely missing from the global program to control AIDS. To help us understand why this gap exists, and what we must do to close it, the three articles in this issue focus on women and AIDS. Examining the situation in such countries as Zimbabwe and South Africa, as well as in other economically underdeveloped and developed regions, the authors argue that women with the least control over their bodies and their lives are at greatest risk of acquiring AIDS. For example, the high rate of infection among women in Africa cannot be understood apart from the legacy of colonialism (including land expropriation and the forced introduction of a migrant labor system) and the insidious combination of traditional and European patriarchal values. Only by recognizing the socioeconomic and cultural determinants of both disease and sexual behavior, and only by incorporating these insights into our AIDS prevention programs, will we be able to curb the spread of this lethal disease.

  18. Caracterización de hábitat y abundancia local de Dynastes hercules (Coleoptera: Melolonthidae: Dynastinae en bosques subandinos del departamento de Santander, Colombia

    Directory of Open Access Journals (Sweden)

    Luisa Fernanda Ballesteros Mesa

    2006-01-01

    Full Text Available Se realizó una caracterización del estrato arbóreo de dos bosques subandinos con antecedentes de colecta del escarabajo hércules, Dynastes hercules, para estudiar la  condición de su hábitat y cuantificar la abundancia local. Se identificaron dos tipos de bosques correspondientes a robledal y selva de lauráceas; el estado de conservación del primer tipo de bosque es óptimo, teniendo en cuenta la densidad y buena oferta de árboles, troncos caídos en descomposición, flores y frutos. La abundancia de D. hercules fue mayor en el bosque de lauráceas debido a la baja presión de extracción de escarabajos en comparación con la población del bosque de roble. Por otro lado, los datos de abundancia de adultos obtenidos en el presente estudio no concuerdan con las estimaciones realizadas en trabajos similares.

  19. Introduction to Indoor Air Quality

    Science.gov (United States)

    ... Offices Regional Offices Labs and Research Centers Indoor Air Quality (IAQ) Contact Us Share Introduction to Indoor Air Quality Health Effects Primary Causes Identifying Problems Improving IAQ ...

  20. Introduction: Victorian Theatricalities

    Directory of Open Access Journals (Sweden)

    Michael Dobson

    2009-04-01

    Full Text Available After a barrage of manipulative fan-letters from Sir Merton and Annie Russell-Cotes, Sir Henry Irving, titan of the Victorian stage and the first actor to be knighted, eventually came to stay, briefly, at East Cliff Hall in Bournemouth. A peculiar but attractive compound of Scots baronial castle, Italian villa, French château and Bournemouth seaside bungalow, complete with lavish Art Nouveau interiors and a fountain in the entrance lobby, the house was always designed in and of itself as a dramatic location and was also intended as a magnet for theatrical celebrities. Sir Merton and Annie amply stuffed it with nineteenth-century British paintings, miscellaneous sculptures, and souvenirs of their extensive overseas holidays. Today the Russell-Cotes Art Gallery and Museum remains the late Victorian treasure house par excellence, and I can imagine few more vivid short-cuts into the culture and mindset of the late nineteenth-century haute bourgeoisie than an afternoon spent marvelling at the tons of accumulated trophies and bibelots cluttering its rooms or the acres of tastefully-exposed nipples adorning its walls. What the Russell-Cotes Museum also makes clear, even at its gloomiest, is the key place of drama in the Victorian imagination. After Irving's death in 1905, the Russell-Cotes bought many of Irving's personal effects at auction. Adding these to their existing collection of Irving memorabilia and other theatrical paintings and souvenirs, they converted the bedroom in which Irving had stayed into a permanent shrine to his memory. The Henry Irving Room would make an ideal introduction to most of the contents of this volume.

  1. del alcoholismo

    Directory of Open Access Journals (Sweden)

    Rodrigo Arias Duque

    2005-01-01

    Full Text Available Desde el punto de vista farmacológico, es importante comprender qué es el alcohol y cómo actúa en el organismo. No existe una causa simple, sino una interacción complicada de factores neuroquímicos, fisiológicos, psicológicos y sociales que originan y desarrollan esta grave enfermedad fármaco-dependiente. La acción psicofisiológica y farmacodinámica del alcohol es fundamentalmente depresiva, por la reducción de la transmisión sináptica en el sistema nervioso humano. Es un hecho conocido que el consumo excesivo de alcohol causa una disfunción aguda y crónica del cerebro, produciendo trastornos en el sistema nervioso central, presentando alteraciones en la memoria y en las funciones intelectuales como cálculo, comprensión y aprendizaje. A nivel hepático tiene lugar, en su mayoría, el metabolismo del alcohol, produciéndose un hígado graso alcohólico, aumentando el tamaño, terminando en necrosis e inflamación grave del hígado; esto se llama hepatitis alcohólica, y si se sigue consumiendo alcohol se desarrollará la cirrosis. El alcohol también ha estado relacionado con alteraciones del miocardio; se ha constatado en animales de experimentación sanos que tanto la velocidad de contracción del músculo cardiaco y su máxima tensión disminuyen en presencia del alcohol, como consecuencia, la fuerza de cada contracción y el aumento de presión en el ventrículo izquierdo son menores, perdiendo eficacia el corazón como bomba.

  2. Introduction (Introducción

    Directory of Open Access Journals (Sweden)

    Giuliana Fazzion

    2015-06-01

    Full Text Available Abstract: Presentation of the monograph "Emancipation: Freeing the self in literature, arts, religion and sport".Resumen: Presentación del monográfico "Emancipación: La liberación del yo en la literatura, las artes, la religión y el deporte".

  3. Introduction to Kinetic Model Equations

    Science.gov (United States)

    2011-01-01

    application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 ∗Dipartimento di Matematica del Politecnico di Milano Piazza Leonardo da Vinci 32...NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Dipartimento di Matematica del Politecnico di Milano Piazza Leonardo da Vinci 32, 20133 Milano

  4. The impact of a pilot water metering project in an Indian city on users’ perception of the public water supply Impact pédagogique de l’introduction de compteurs sur les utilisateurs du service d’eau public dans une ville indienne El impacto didáctico de la introducción de medición sobre los usuarios del servicio de abastecimiento de agua público en una ciudad en India

    Directory of Open Access Journals (Sweden)

    A. Amiraly

    2011-06-01

    Full Text Available Purpose – This article concerns a developmental experience in the water sector, namely the introduction of water metering in an Indian city, in the framework of a French water company’s technical assistance to the local public water authority.  We address the impact of the introduction of the water meter, an object that crystallizes a symbolic part of the management model of the French company, on the local water supply context and socio-political environment, focusing in particular on how trust between the users and the service providers is reconfigured.Methodology – The methodology consisted of an exploratory field survey with 37 households in the pilot water metering area.Findings – The water meter is an artefact highlighting users' perception of water and society.  The user reinterprets its function, mainly perceiving it as a tool to monitor the consumption of water, dissociated from the dimension of payment. As soon as the issue of payment based on consumption comes into the picture, then the trust the user has developed in the private foreign company is displaced towards the public authority.Objet – Cet article porte sur une expérience comportementale dans le secteur de l’eau. Dans le cadre d'une mission visant à fournir une assistance technique à une compagnie des eaux publique locale, une société de distribution d’eau française a mis en place des compteurs d’eau dans une ville indienne. L’aspect principal de cette expérience a porté sur la transposition du compteur d’eau, objet qui symbolise le modèle de gestion de l’entreprise française, dans le contexte local d’alimentation en eau et l'environnement socio-politique indien. Nous avons examiné l’impact de cette introduction en nous intéressant plus particulièrement à la modification de la relation de confiance entre les utilisateurs et les fournisseurs de service.Méthodologie – Un sondage qualitatif sur le terrain portant sur 37 foyers dans la

  5. Advanced Introduction to Private Law

    NARCIS (Netherlands)

    Smits, Jan

    2017-01-01

    In this Advanced Introduction, the reader is taken on an intellectual journey through the different facets and dimensions of private law, from the family home to Kuta Beach and from Thomas Piketty to Nina Hagen. This concise book provides an accessible and fresh introduction to private law,

  6. Bestseller and Blockbuster Culture. Introduction

    DEFF Research Database (Denmark)

    Agger, Gunhild

    2013-01-01

    In cultural communication, the bestseller concept has become a ubiquitous factor – often unnoticed, but ever present. The corresponding concept in feature films is the blockbustster. Introduction to the whole volume.......In cultural communication, the bestseller concept has become a ubiquitous factor – often unnoticed, but ever present. The corresponding concept in feature films is the blockbustster. Introduction to the whole volume....

  7. Geographic information systems: introduction.

    Science.gov (United States)

    Calistri, Paolo; Conte, Annamaria; Freier, Jerome E; Ward, Michael P

    2007-01-01

    sensing applications - Web - GIS as a tool for data and knowledge sharing. All 43 manuscripts selected for this book have been peer-reviewed. These contributions were originally commissioned for the First international conference on the use of GIS in veterinary activities organised by the Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise 'G. Caporale', Teramo, Italy, and the World Organisation for Animal Health (OIE: Office International des Epizooties) that was held in Silvi Marina, Italy, from 8 to 11 October 2006. The editors would like to thank all authors for their valuable contributions.

  8. Nuclear reactions. An introduction

    Energy Technology Data Exchange (ETDEWEB)

    Paetz gen. Schieck, Hans [Koeln Univ. (Germany). Inst. fuer Kernphysik

    2014-03-01

    Modern, self-contained introduction to the subject matter. Emphasizes the interplay between theory and experiment. Course-tested tutorial style, contains many derivations. Nuclei and nuclear reactions offer a unique setting for investigating three (and in some cases even all four) of the fundamental forces in nature. Nuclei have been shown - mainly by performing scattering experiments with electrons, muons, and neutrinos - to be extended objects with complex internal structures: constituent quarks; gluons, whose exchange binds the quarks together; sea-quarks, the ubiquitous virtual quark-antiquark pairs and, last but not least, clouds of virtual mesons, surrounding an inner nuclear region, their exchange being the source of the nucleon-nucleon interaction. The interplay between the (mostly attractive) hadronic nucleon-nucleon interaction and the repulsive Coulomb force is responsible for the existence of nuclei; their degree of stability, expressed in the details and limits of the chart of nuclides; their rich structure and the variety of their interactions. Despite the impressive successes of the classical nuclear models and of ab-initio approaches, there is clearly no end in sight for either theoretical or experimental developments as shown e.g. by the recent need to introduce more sophisticated three-body interactions to account for an improved picture of nuclear structure and reactions. Yet, it turns out that the internal structure of the nucleons has comparatively little influence on the behavior of the nucleons in nuclei, and nuclear physics - especially nuclear structure and reactions - is thus a field of science in its own right, without much recourse to subnuclear degrees of freedom. This book collects essential material that was presented in the form of lectures notes in nuclear physics courses for graduate students at the University of Cologne. It follows the course's approach, conveying the subject matter by combining experimental facts and

  9. INTRODUCTION: GRADUATE STUDENT SCHOLARSHIP

    Directory of Open Access Journals (Sweden)

    Laverne Jacobs

    2015-02-01

    Full Text Available The Windsor Yearbook of Access to Justice is proud to publish issue 32 (1. This issue features a special section highlighting the scholarship of graduate students. While it is always a pleasure to read promising work by newer scholars in the fields of law and social justice, we are certain that this collection of articles represents some of the finest and thought-provoking scholarship stemming from current graduate students in law. The articles stem from a graduate student essay contest that WYAJ held in 2013 and for which we received many submissions. The collection of selected papers offers a view of legal and interdisciplinary research examining issues that are topically diverse but which are all of deep, long-term importance to the world of access to justice. A reader of the special section on Graduate Student Scholarship will find explorations of access to justice from the perspectives of equality rights, discretion, adjudication and methods of legal service delivery, to name a few. A prize was offered to two papers judged to be of exceptional quality. I am very pleased to announce that the winners of those two prizes are Andrew Pilliar, for his article “Exploring a Law Firm Business Model to Improve Access to Justice” and Blair A. Major, for his contribution, “Religion and Law in R v NS: Finding Space to Re-think the Balancing Analysis”. The Editorial Board thanks all those who submitted papers to the contest and to this final special issue of the Windsor Yearbook of Access to Justice. Another notable feature of this issue is the introduction of a section called Research Notes. The Yearbook will periodically publish peer-reviewed research notes that present the findings of empirical (quantitative, qualitative or mixed method research studies. This section aims to contribute to the growing and important body of empirical scholarship within the realm of access to justice socio-legal research. We hope that you enjoy

  10. Nuclear reactions. An introduction

    International Nuclear Information System (INIS)

    Paetz gen. Schieck, Hans

    2014-01-01

    Modern, self-contained introduction to the subject matter. Emphasizes the interplay between theory and experiment. Course-tested tutorial style, contains many derivations. Nuclei and nuclear reactions offer a unique setting for investigating three (and in some cases even all four) of the fundamental forces in nature. Nuclei have been shown - mainly by performing scattering experiments with electrons, muons, and neutrinos - to be extended objects with complex internal structures: constituent quarks; gluons, whose exchange binds the quarks together; sea-quarks, the ubiquitous virtual quark-antiquark pairs and, last but not least, clouds of virtual mesons, surrounding an inner nuclear region, their exchange being the source of the nucleon-nucleon interaction. The interplay between the (mostly attractive) hadronic nucleon-nucleon interaction and the repulsive Coulomb force is responsible for the existence of nuclei; their degree of stability, expressed in the details and limits of the chart of nuclides; their rich structure and the variety of their interactions. Despite the impressive successes of the classical nuclear models and of ab-initio approaches, there is clearly no end in sight for either theoretical or experimental developments as shown e.g. by the recent need to introduce more sophisticated three-body interactions to account for an improved picture of nuclear structure and reactions. Yet, it turns out that the internal structure of the nucleons has comparatively little influence on the behavior of the nucleons in nuclei, and nuclear physics - especially nuclear structure and reactions - is thus a field of science in its own right, without much recourse to subnuclear degrees of freedom. This book collects essential material that was presented in the form of lectures notes in nuclear physics courses for graduate students at the University of Cologne. It follows the course's approach, conveying the subject matter by combining experimental facts and experimental

  11. Introduction and Committees

    Science.gov (United States)

    Angelova, Maia; Zakrzewski, Wojciech; Hussin, Véronique; Piette, Bernard

    2011-03-01

    This volume contains contributions to the XXVIIIth International Colloquium on Group-Theoretical Methods in Physics, the GROUP 28 conference, which took place in Newcastle upon Tyne from 26-30 July 2010. All plenary and contributed papers have undergone an independent review; as a result of this review and the decisions of the Editorial Board most but not all of the contributions were accepted. The volume is organised as follows: it starts with notes in memory of Marcos Moshinsky, followed by contributions related to the Wigner Medal and Hermann Weyl prize. Then the invited talks at the plenary sessions and the public lecture are published followed by contributions in the parallel and poster sessions in alphabetical order. The Editors:Maia Angelova, Wojciech Zakrzewski, Véronique Hussin and Bernard Piette International Advisory Committee Michael BaakeUniversity of Bielefeld, Germany Gerald DunneUniversity of Connecticut, USA J F (Frank) GomesUNESP, Sao Paolo, Brazil Peter HanggiUniversity of Augsburg, Germany Jeffrey C LagariasUniversity of Michigan, USA Michael MackeyMcGill University, Canada Nicholas MantonCambridge University, UK Alexei MorozovITEP, Moscow, Russia Valery RubakovINR, Moscow, Russia Barry SandersUniversity of Calgary, Canada Allan SolomonOpen University, Milton Keynes, UK Christoph SchweigertUniversity of Hamburg, Germany Standing Committee Twareque AliConcordia University, Canada Luis BoyaSalamanca University, Spain Enrico CeleghiniFirenze University, Italy Vladimir DobrevBulgarian Academy of Sciences, Bulgaria Heinz-Dietrich DoebnerHonorary Member, Clausthal University, Germany Jean-Pierre GazeauChairman, Paris Diderot University, France Mo-Lin GeNankai University. China Gerald GoldinRutgers University, USA Francesco IachelloYale University, USA Joris Van der JeugtGhent University, Belgium Richard KernerPierre et Marie Curie University, France Piotr KielanowskiCINVESTAV, Mexico Alan KosteleckyIndiana University, USA Mariano del Olmo

  12. Culturas del Mundo

    DEFF Research Database (Denmark)

    Benwell, Ann Fenger; Costa, Alberto; Waehle, Espen

    2006-01-01

    ’Culturas del mundo. Colecciones del Museo Nacional de Dinamarca’ with Ann Fenger Benwell in Culturas del Mundo. Colecciones del Museo Nacional de Dinamarca, ed. Silvia Sauquet, Fundación "la Caixa", Barcelona 2006, pp. 31-39......’Culturas del mundo. Colecciones del Museo Nacional de Dinamarca’ with Ann Fenger Benwell in Culturas del Mundo. Colecciones del Museo Nacional de Dinamarca, ed. Silvia Sauquet, Fundación "la Caixa", Barcelona 2006, pp. 31-39...

  13. An introduction to real analysis

    CERN Document Server

    Ball, Derek G

    1973-01-01

    An Introduction to Real Analysis presents the concepts of real analysis and highlights the problems which necessitate the introduction of these concepts. Topics range from sets, relations, and functions to numbers, sequences, series, derivatives, and the Riemann integral. This volume begins with an introduction to some of the problems which are met in the use of numbers for measuring, and which provide motivation for the creation of real analysis. Attention then turns to real numbers that are built up from natural numbers, with emphasis on integers, rationals, and irrationals. The chapters tha

  14. An introduction to gas discharges

    CERN Document Server

    Howatson, A M

    2013-01-01

    An Introduction to Gas Discharges: Second Edition aims to provide a compact introduction to the subject of gas discharges, which continues to make both scientific and industrial progress. In this second edition, the author has made minor corrections, rewritten and expanded some sections, used SI units and modernized notions, in hopes of making the book more up to date. Included in the book is a short history of the subject, an introduction that enumerates the types of gas discharges, the fundamental processes, and then moves on to the more specific areas such as the breakdown, the self-sustai

  15. CONCENTRACIÓN DE CARBONO EN Pinus cembroides Zucc: FUENTE POTENCIAL DE MITIGACIÓN DEL CALENTAMIENTO GLOBAL

    Directory of Open Access Journals (Sweden)

    Marín Pompa-García

    2014-01-01

    Full Text Available Los bosques de Pinus cembroides Zucc, usualmente, han sido segregados del aprovechamiento forestal comercial dadas sus desventajas maderables. Sin embargo, esta especie desempeña un papel importante en la biodiversidad de México. El objetivo del presente estudio fue deter - minar la concentración de carbono (C en los principales compartimentos de P. cembroides : raíz, corteza, fuste, ramas, yemas y hojas. La concentración de C total expresado como porcentaje de la biomasa fue determinado con el Solids TOC Analyzer. Los resultados se analizaron en un diseño completamente al azar y mediante comparación de medias de Tukey. El análisis indicó que la concen - tración de C var ía entre los componentes ( P < 0.05; la yema tuvo el valor más alto (57.1 %, mientras que el fuste y las ramas registraron los valores más bajos (47.7 y 47.8 %, respectivamente. Los resul - tados contribuyen a mejorar las estimaciones de C y proveen información importante para definir si los bosques de P. cembroides pueden considerarse como una posible fuente con potencial de mitigación ante el cambio climático y así utilizarlos en un programa de secuestro de C.

  16. Estimación del riesgo enfermedad cardiovascular en el contexto de la Atención Primaria de Salud.

    Directory of Open Access Journals (Sweden)

    Alexander Ochoa Agüero

    2016-02-01

    Full Text Available Objetivo: Explicar el concepto de riesgo cardiovascular global y describir los modelos disponibles para su estimación. Desarrollo: El crecimiento de la población y el incremento de la esperanza de vida motivan el incremento de la morbimortalidad por enfermedades cardiovasculares. Su alta incidencia se relaciona con el efecto combinado y multiplicativo de factores de riesgo, cuya valoración debe realizarse mediante la evaluación del riesgo cardiovascular global. Se consultaron 49 referencias, obtenidas de bases de datos bibliográficas en Internet. La literatura actualizada muestra la existencia de diversos métodos para evaluar el riesgo cardiovascular global, en su mayoría usan los criterios de predicción derivados del estudio de Framingham y tienen como objetivo detectar a los pacientes con un alto riesgo. Conclusiones: Se define el riesgo cardiovascular global y entre las guías disponibles para su estimación en el individuo y la comunidad figura la tabla de riesgo Organización Mundial de Salud, basada en poblaciones de las subregiones epidemiológicas definidas por la organización, utiliza los factores de riesgo de mayor carácter predictivo y permite estimaciones en personas sin síntomas de enfermedad cardiovascular.

  17. Heuristic introduction to gravitational waves

    International Nuclear Information System (INIS)

    Sandberg, V.D.

    1982-01-01

    The purpose of this article is to provide a rough and somewhat heuristic theoretical background and introduction to gravitational radiation, its generation, and its detection based on Einstein's general theory of relativity

  18. Elementary introduction to relativistic kinematics

    International Nuclear Information System (INIS)

    Gerber, H.J.

    1979-01-01

    This paper includes the most important results and applications of the theory of special relativity to high energy phenomena; it provides an analysis of the kinematics of particle decays and reactions as well as an introduction to the Lorentz group

  19. Introduction to wind turbine aerodynamics

    CERN Document Server

    Schaffarczyk, Alois Peter

    2014-01-01

    Wind-Turbine Aerodynamics is a self-contained textbook which shows how to come from the basics of fluid mechanics to modern wind turbine blade design. It presents a fundamentals of fluid dynamics and inflow conditions, and gives a extensive introduction into theories describing the aerodynamics of wind turbines. After introducing experiments the book applies the knowledge to explore the impact on blade design.The book is an introduction for professionals and students of very varying levels.

  20. An introduction to electrooptic devices

    CERN Document Server

    Kaminow, Ivan P

    1974-01-01

    An Introduction to Electrooptic Devices aims to present an introduction to the electrooptic effect and to summarize work on devices employing the electrooptic effect. The book provides the necessary background in classical crystal optics. The text then discusses topics including crystal symmetry, the tensor description of linear dielectric properties, propagation in anisotropic media, and passive crystal optic devices. The book also describes the phenomenological description of tensor nonlinear dielectric properties of crystals, with emphasis on the electrooptic effect; device design and appli

  1. Introduction to ordinary differential equations

    CERN Document Server

    Rabenstein, Albert L

    1966-01-01

    Introduction to Ordinary Differential Equations is a 12-chapter text that describes useful elementary methods of finding solutions using ordinary differential equations. This book starts with an introduction to the properties and complex variable of linear differential equations. Considerable chapters covered topics that are of particular interest in applications, including Laplace transforms, eigenvalue problems, special functions, Fourier series, and boundary-value problems of mathematical physics. Other chapters are devoted to some topics that are not directly concerned with finding solutio

  2. ¿DÓNDE QUEDÓ EL TRABAJO? Una propuesta para medir la participación del ingreso laboral en México

    Directory of Open Access Journals (Sweden)

    Edgardo Arturo Ayala Gaytán

    2014-01-01

    Full Text Available Las participaciones del ingreso laboral en México que se estiman a partir del Sistema de Cuentas Nacionales son excepcionalmente reducidas —entre 0.25 y 0.33— comparadas con la evidencia internacional. En el presente artículo argumentamos que existe un severo problema de subregistro de los ingresos laborales debido al autoempleo y al nulo registro de ingresos laborales de los empleadores y los no remunerados. Proponemos tres criterios para corregir las participaciones, que van desde asignar el salario promedio de los remunerados hasta hacer estimaciones de ecuaciones mincerianas para predecir el costo de oportunidad de los individuos de acuerdo con sus atributos. Encontramos que, una vez hechos los ajustes, el peso de los ingresos laborales se encuentra entre 42 y 47% del valor agregado, y que las correcciones son especialmente grandes en la agricultura, construcción, comercio, restaurantes y servicios, sectores con alta incidencia de informalidad y de empresas pequeñas y micro.

  3. Hacer estimaciones estadísticas

    Directory of Open Access Journals (Sweden)

    Badii, M.H.

    2008-07-01

    Full Text Available The notion of statistical estimation both in terms of point and interval is described. The criteria of a good estimator are noted. The procedures to calculate the intervals for the mean, proportions and the difference among two means as well as the confidence intervals for the probable errors in statistics are provided.

  4. Three-dimensional analysis of the airflow in an industrial nozzle; Analisis tridimensional del flujo de aire en tobera industrial

    Energy Technology Data Exchange (ETDEWEB)

    Vigueras Zuniga, M. O.; Santos Nunez, C.; Bolado Estandia, R. [Instituto Mexicano del Petroleo, Veracruz (Mexico)

    2010-11-15

    This work presents an estimation of the aerodynamics' effects produced by the air flow velocity in the inlet of an industrial oven. The research was based on a combustor chamber installed at the Laboratorio de Sistemas de Combustion del Instituto Mexicano del Petroleo, Veracruz, Mexico. The results showed the numerical simulations of the three-dimensional effects of the air flow. The range of the velocity air flow (0 to 1.5 m/s) resulted that the flow behaviour and the recirculation zone were symmetric from the axial axis. On the other hand, the range of the velocity flow (1.5 to 3.8 m/s) resulted that the recirculation was not uniform and it was observed that the flow was directed to the top region of the chamber wall. This information was compared with experimental data recorded in a previous test. Finally, this work demonstrated that the flow velocity range of 1.5 to 3.8 m/s produced three-dimensional effects and changed the flame position. For that reason, it is important to correct this problem to improve the combustion process. [Spanish] El siguiente trabajo presenta una estimacion de los efectos aerodinamicos producidos por la velocidad del flujo de aire en la garganta de admision de un horno industrial. Para esta investigacion se considero la actual configuracion del horno instalado en el Laboratorio de Sistemas de Combustion del Instituto Mexicano del Petroleo en Veracruz, Mexico. Los resultados fueron obtenidos a partir de la creacion de un modelo de simulacion numerica que permitio estudiar los efectos tridimensionales del flujo de aire. Basados en los resultados de la simulacion, se determino que el rango de 0 a 1.5 m/s (velocidad del flujo de aire) se comporta de forma simetrica respecto al eje axial central. Para un rango de velocidades mayor a 1.5 m/s el flujo de aire se comporta no uniforme con una tendencia de direccion a la parte superior de la camara de combustion. La informacion obtenida del modelo fue comparada con datos experimentales

  5. DISTRIBUCIÓN DEL CARBONO ORGÁNICO EN LOS DIFERENTES TAMAÑOS DE PARTÍCULAS DEL SUELO: MODELO SIMPLE DE CINÉTICA LINEAL

    Directory of Open Access Journals (Sweden)

    Fernando Paz Pellat

    2014-04-01

    Full Text Available La modelación de la dinámica del carbono orgánico en los suelos (COS permite establecer ganancias y pérdidas asociadas a perturbaciones de la vegetación y prácticas de manejo. En especial, la estimación de cambios en los reservorios de carbono, lábiles y recalcitrantes, sin consideraciones de estados de equilibrio, plantea la necesidad de establecer un modelo de distribución del COS en las fracciones físicas de los suelos (tamaño de partículas que pueda ser parametrizado con la información disponible en los inventarios nacionales (COS total y textura. En este trabajo se propone un modelo simplificado de la distribución del COS, el cual es producto del balance de masa entre las fracciones de carbono del suelo, el cual se plantea como directamente asociado al tamaño de las partículas y no a su distribución de masa. El modelo fue calibrado usando una base de datos de fraccionamientos físicos en Andosoles, Cambisoles y Acrisoles en sistemas agrícolas y forestales en Atécuaro, Michoacán, México, considerando solo el COS asociado a la parte organomineral y el total (organomineral + particulada. El modelo de la distribución del COS por tamaño de las partículas del suelo fue ajustado a datos experimentales. El mismo parte del conocimiento del COS total y del COS para un tamaño de partícula de referencia, estimada experimentalmente o supuesta. Los resultados mostraron que para el caso de los sistemas agrícolas el modelo se ajustó bien a las mediciones (R2 > 0.999. Para el caso de los sistemas forestales, las estimaciones son buenas (R2 > 0.97. Al final se discuten las implicaciones del modelo desarrollado, donde el concepto clásico de saturación de COS de los suelos es cuestionado y explicado en términos de las tasas de descomposición y asimilación de la fracción particulada y organomineral; asimismo, la relación entre la textura del suelo y el COS asociado al tamaño de las partículas no es soportada, al considerar a

  6. Crecimiento y mortalidad natural del pez Haemulon aurolineatum (Teleostei: Haemulidae del suroeste de la isla de Margarita, Venezuela

    Directory of Open Access Journals (Sweden)

    Edwis Bravo

    2009-09-01

    Full Text Available Se determinó el crecimiento y la mortalidad natural del cují (Haemulon aurolineatum del suroeste de la isla de Margarita, entre julio 2005 hasta junio 2006, para lo cual se analizó una muestra de 2 541 ejemplares colectados de la pesca artesanal de Boca del Río. La relación talla-peso entre machos y hembras no mostró diferencias significativas en las pendientes "b" (p>0.05, ts = -1.69 ni en los interceptos "a" (p>0.05, ts = -1.01, por lo que se estableció una relación común para ambos sexos, expresada mediante el modelo P = 0.038*LT2.87. A partir de los datos de distribución de frecuencia de tallas se estimó la longitud asintótica (L∞ con la rutina de Powell-Wetherall, y el coeficiente de crecimiento (k con la rutina ELEFAN I (Gayanilo et al.1996. Se empleó el análisis de la progresión modal, previa descomposición de la frecuencia de longitudes de acuerdo al método de Bhattacharya (1967, y se optimizaron las estimaciones de L∞ y k según Gulland y Holt (1959. Los parámetros de crecimiento estimados (L∞ = 24.2 cm y k = 0.48 año-1 mostraron un crecimiento moderadamente rápido. Los datos de frecuencias de longitudes fueron ajustados al modelo de von Bertalanffy (1960, mostrando una tendencia de tipo exponencial, donde se observó un crecimiento acelerado hasta los 2 años de edad, que luego se hizo lento a medida que el pez alcanzó la longitud máxima. La tasa de mortalidad natural fue alta (M = 1.15 año-1, probablemente causada por alta depredación.

  7. Estudio bioarqueológico del esqueleto recuperado en la corbeta británica del siglo XVIII HMS-Swift

    Directory of Open Access Journals (Sweden)

    Barrientos, Gustavo

    2007-01-01

    Full Text Available Durante las recientes excavaciones efectuadas en los restos de la corbeta británica HMS Swift, naufragada en 1770 en Puerto Deseado (Provincia de Santa Cruz, se encontró un esqueleto humano completo. La documentación histórica oficial señala que durante el naufragio desaparecieron dos infantes de marina, de 21 y 23 años de edad, cuyos nombres y lugar de procedencia son conocidos. Para determinar si el esqueleto corresponde a uno de estos dos individuos, se están desarrollando investigaciones centradas en obtener información relevante mediante el estudio del sexo, edad, estatura, patologías, patrones de actividad, dieta (isótopos estables del C y N y características genéticas (rasgos no métricos, ADNmt. Los resultados de las estimaciones de sexo, edad y estatura indican que se trataría de un individuo masculino, adulto joven, de alrededor de 25 años al momento de morir (rango de edad calculada entre 17 y 34 años y de alrededor de 1,67 m de estatura. La evidencia obtenida hasta el presente indica que, con una alta probabilidad, el esqueleto corresponde a uno de los dos tripulantes desaparecidos, aunque aún no puede asignarse a uno de ellos en particular, por lo que se espera que la información genética pueda aportar a su potencial identificación.

  8. An introduction to gauge theories

    International Nuclear Information System (INIS)

    Iliopoulos, J.

    1977-01-01

    The CERN-JINR School of Physics is meant to give young experimental physicists an introduction to the theoretical aspects of recent advances in elementary particle physics. This paper presents an introduction to gauge theories: the systematics of Yang-Mills theories, spontaneous symmetry breaking, and Higgs mechanism. The treatment is simple, stressing the general principles rather than detailed calculations. The author presents the Weinberg-Salam model as an example of a renormalizable theory of weak and electromagnetic interactions of leptons, and it is shown that the extension of these ideas into the hadronic world requires the introduction of charm and colour. Finally, an attempt is made to include strong interactions into the scheme, guided by the experimental results of deep-inelastic lepton-nucleon scattering. The Callan-Symanzik equation, and the concepts of asymptotic freedom and quark confinement are introduced. (Auth.)

  9. Introduction to computers: Reference guide

    Energy Technology Data Exchange (ETDEWEB)

    Ligon, F.V.

    1995-04-01

    The ``Introduction to Computers`` program establishes formal partnerships with local school districts and community-based organizations, introduces computer literacy to precollege students and their parents, and encourages students to pursue Scientific, Mathematical, Engineering, and Technical careers (SET). Hands-on assignments are given in each class, reinforcing the lesson taught. In addition, the program is designed to broaden the knowledge base of teachers in scientific/technical concepts, and Brookhaven National Laboratory continues to act as a liaison, offering educational outreach to diverse community organizations and groups. This manual contains the teacher`s lesson plans and the student documentation to this introduction to computer course.

  10. Introduction to applied algebraic systems

    CERN Document Server

    Reilly, Norman R

    2009-01-01

    This upper-level undergraduate textbook provides a modern view of algebra with an eye to new applications that have arisen in recent years. A rigorous introduction to basic number theory, rings, fields, polynomial theory, groups, algebraic geometry and elliptic curves prepares students for exploring their practical applications related to storing, securing, retrieving and communicating information in the electronic world. It will serve as a textbook for an undergraduate course in algebra with a strong emphasis on applications. The book offers a brief introduction to elementary number theory as

  11. Introduction to biomedical engineering technology

    CERN Document Server

    Street, Laurence J

    2011-01-01

    IntroductionHistory of Medical DevicesThe Role of Biomedical Engineering Technologists in Health CareCharacteristics of Human Anatomy and Physiology That Relate to Medical DevicesSummaryQuestionsDiagnostic Devices: Part OnePhysiological Monitoring SystemsThe HeartSummaryQuestionsDiagnostic Devices: Part TwoCirculatory System and BloodRespiratory SystemNervous SystemSummaryQuestionsDiagnostic Devices: Part ThreeDigestive SystemSensory OrgansReproductionSkin, Bone, Muscle, MiscellaneousChapter SummaryQuestionsDiagnostic ImagingIntroductionX-RaysMagnetic Resonance Imaging ScannersPositron Emissio

  12. An introduction to fire dynamics

    CERN Document Server

    Drysdale, Dougal

    2011-01-01

    "Drysdale's book is by far the most comprehensive - everyone in the office has a copy...now including me. It holds just about everything you need to know about fire science."(Review of An Introduction to Fire Dynamics, 2nd Edition) After 25 years as a bestseller, Dougal Drysdale's classic introduction has been brought up-to-date and expanded to incorporate the latest research and experimental data.  Homework problems are included, with solutions, and others are available on the accompanying website at www.wiley.com/go/drysdale. Essential reading for all involved in the field from undergraduate

  13. Solid state physics an introduction

    CERN Document Server

    Hofmann, Philip

    2015-01-01

    A must-have textbook for any undergraduate studying solid state physics. This successful brief course in solid state physics is now in its second edition. The clear and concise introduction not only describes all the basic phenomena and concepts, but also such advanced issues as magnetism and superconductivity. Each section starts with a gentle introduction, covering basic principles, progressing to a more advanced level in order to present a comprehensive overview of the subject. The book is providing qualitative discussions that help undergraduates understand concepts even if they can?t foll

  14. An Introduction to TTCN-3

    CERN Document Server

    Willcock, Colin; Tobies, Stephan; Keil, Stefan; Engler, Federico; Schulz, Stephan; Wiles, Anthony

    2011-01-01

    This unique book provides a fully revised and up-to-date treatment of the TTCN-3 language TTCN-3 is an internationally standardised test language with a powerful textual syntax which has established itself as a global, universal testing language. Application of TTCN-3 has been widened beyond telecommunication systems to areas such as the automotive industry, internet protocols, railway signalling, medical systems, and avionics.An Introduction to TTCN-3 gives a solid introduction to the TTCN-3 language and its uses, guiding readers though the TTCN-3 standards, methodologies and tools with examp

  15. Introduction

    Directory of Open Access Journals (Sweden)

    Deborah Hauptmann

    2014-08-01

    Full Text Available Over the past fifteen years most advanced education programmes within Schools of Architecture have been questioning the parameters and requirements of doctoral research both in terms of content and form. This double issue of Footprint was motivated by the question of where the field stands today. Footprint 10|11 presents nine contributions from both recently defended and developing PhD candidates from a variety of institutions. The diversity of their work, as well as the similarities found in the submissions, offers a partial view into research topics currently addressed in PhD programmes within Schools of Architecture. In addition to the nine papers by PhD researchers, we have included a paper by Andrew Leach that we believe provides an overview of the general state of contemporary architecture research. Leach makes an appeal to refrain from making all research operational. At a time when the application of research and its economic value seem to form the primary criteria for judging value, this appeal should not be taken lightly.

  16. Introduction

    DEFF Research Database (Denmark)

    Darsø, Lotte; Kerr, Cheryl

    2008-01-01

    Introduktion til special issue om hvordan kunstneriske processer kan bidrage til udvikling af ledelse, management, læring og uddannelse......Introduktion til special issue om hvordan kunstneriske processer kan bidrage til udvikling af ledelse, management, læring og uddannelse...

  17. Introduction

    DEFF Research Database (Denmark)

    Bregnbæk, Susanne; Bunkenborg, Mikkel

    2017-01-01

    Uncertainty often seems to be articulated as doubts about the interior make-up of things. Suspecting that persons, objects, institutions and ideologies are not what they seem, critical voices accuse them of emptiness and they are thus laid open to new investments of meaning and value. Ethnographi...

  18. Introduction

    DEFF Research Database (Denmark)

    Andersen, Gisle; Hardt, Daniel

    2014-01-01

    Recent decades of research in linguistics have seen a shift towards empirical methods and an increased use of data from corpora as a basis for making claims about language (Sampson 2005). This trend has made its mark on research on the Nordic languages also, and the current special issue aims to ...

  19. Introduction

    DEFF Research Database (Denmark)

    Gjerdrum Pedersen, Esben Rahbek; Gardetti, Miguel Angel

    2015-01-01

    This special issue has chosen to zoom in on new business models as one component in promoting a more sustainable fashion industry. The business model concept has recently come to the fore as a new, popular metaphor for explaining how companies create, deliver and capture value (Osterwalder and Pi...

  20. Introduction

    Directory of Open Access Journals (Sweden)

    Kathleen Newland

    2002-06-01

    Full Text Available Certain events divide moments in time into ‘before’ and‘after’. Hiroshima ushered in the age of the nuclearthreat; the fall of the Berlin Wall marked the end ofthe Cold War.

  1. Introduction

    Directory of Open Access Journals (Sweden)

    Helge Hvid

    2013-01-01

    This issue includes six articles where we start off by Abrahamsson and Johansson, who give us a short but comprehensive presentation of how psychosocial work environment has been understood in research and policy over 100 years, with Sweden as the focal point. Short, because they write in the format of an article. Comprehensive, because the authors take a broad understanding of the psychosocial work environment comprising “health/illness,” where factors such as stress and burnout are central, “management and development,” where employee involvement, learning, and innovation are central, and “problematization,” which includes critically oriented research on the nature of work. The article not only provides an overview of the research that has been done in this area in the last 100 years but also relates research to policy and practice. The article thus provides a valuable perspective on today’s research and public debate on the works, with a Nordic perspective (...

  2. Introduction

    NARCIS (Netherlands)

    Hoekman, R.H.A.; Werff, H. van der; Nagel, S.; Breuer, C.; Breuer, C.; Hoekman, R.H.A.; Nagel, S.; Werff, H. van der

    2015-01-01

    Sport clubs have a long tradition in nearly all European countries. They play an important role in the sporting activities of the population, not only for elite and competitive sport but also for sport for all. During the period of over a century in which sport clubs have been existent in Europe,

  3. Introduction

    DEFF Research Database (Denmark)

    Post, Hans Christian; Munteán, László

    2016-01-01

    The Cambodian memorials to the Cambodian genocide between 1975 and 1979 can in numerous ways be termed monstrous. Not so much in that they deal with atrocities monstrous in scale and character, as in the monstrous visual means they employ and the imprecise, monster-ridden explanations they delive...

  4. Introduction

    International Nuclear Information System (INIS)

    Wells, A.F.

    1988-01-01

    The methods of preparing and the chemical properties of different boron compounds including simple and complex boron halides, boron oxides and sulfides, boron organic compounds are briefly described. The main features of their crystal and molecular structure, as well as the effect of structure their properties and stability of boron compounds are discussed

  5. Introduction

    NARCIS (Netherlands)

    Hooke, J.; Barberá, G.; Cammeraat, L.H.; Castillo, V.; Poesen, J.; Torri, D.; van Wesemael, B.; Hooke, J.; Sandercock, P.

    2017-01-01

    This book explains the methods and results of a major research project, RECONDES, that was undertaken to develop strategies of effective use of vegetation to combat desertification and land degradation by water. The research approach combined understanding of the processes of erosion and land

  6. Introduction

    International Nuclear Information System (INIS)

    Nishiyama, A.

    1993-01-01

    In 1972, Nuclear Fuels Divisions of Sumitomo and Furukawa Electric Industries merged and became a subsidiary of Sumitomo and Furukawa Industries which is now called Nuclear Fuel Industries, Ltd. We design and manufacture various kinds of nuclear fuels. As for research reactor fuel, we began our development activities in 1956. Since then we have spent over 2 million dollars for development of nuclear fuels and plant facilities including complete manufacturing and testing capabilities. Now we are the only supplier of the research reactor fuel in Japan. Our fabrication process starts with the melting, alloying, and casting of U-Al. The uranium billets are prepared by foreign fabricators. The uranium content varies from 13 to 22 wt % according to the purchaser's specifications. In making fuel plates, the picture frame method is applied. In this case, our original procedure is sufficiently effective in avoiding dogboning. The plates are finished by hot and cold roll milling and inspected dimensionally, metallurgically, and mechanically, and at the same time the blister test and X-ray radiographic tests are performed. Fuel elements are assembled by rolling flat or curved plates into side plate grooves and end-fit welding. Finished elements are tested dimensionally and hydraulically. Nominal losses during operation are less than 1% of the uranium metal. Our present capacity licensed by the Japanese Government is approximately 950 fuel elements a year. About 35 employees including engineers are engaged in development and manufacturing of fuels. Owing to the small limited demand of the research reactor fuels in Japan during the past 20 years (mostly in last 10 years), we processed only about 350 kg of highly enriched uranium and supplied approximately 1000 fuel elements to JAERI, Kyoto University, and others, and we have been suffering red-ink balance of budget every year

  7. Introduction

    OpenAIRE

    Shrank, C.; Bryson, A.

    2017-01-01

    These essays arose from a conference, organized as part of the "Early Modern Manuscript Poetry" project, which was funded by the U.K.'s Arts and Humanities Research Council and led by Steven W. May. From his 1968 PhD thesis—an edition of Henry Stanford's anthology, under the guidance of William A. Ringler Jr.—Steve has been in the forefront of early modern manuscript studies, as the author of numerous influential articles and books, including The Elizabethan Courtier Poets (1991), and as the ...

  8. Introduction

    DEFF Research Database (Denmark)

    Peters, Chris

    2016-01-01

    referred to as “everyday life” provides a useful starting point for research into media use. It guides us towards a number of considerations, from how we structure our day through certain habits and patterns of media consumption; to the development of technology and the formation of new rituals...... century history. Indeed, a quick Google Scholar search of “everyday life” takes us on whirlwind interdisciplinary tour of academia, from sociology to cultural studies, psychology to political science, anthropology to economics. There is good reason for this, in that thinking through consistency and change...... – patterns and disruptions – across the passage of time forms the analytic foundation for much scientific research. But while “everyday life” adorns the cover of many a noted book (e.g. Goffman 1959; de Certeau 1984), a comparable term is almost nowhere to be found. “Everywhere life” not only draws...

  9. Introduction

    Directory of Open Access Journals (Sweden)

    Paul Aron

    2008-06-01

    Full Text Available En guise de préambule, nous voudrions cerner rapidement l’objet dont il sera question et proposer quelques pistes de réflexion.Brève histoire problématique de la biographieLa biographie est un genre ancien, même si le mot n’apparaît en France qu’à la fin du xviie siècle. Ce genre est consacré à retracer des vies authentiques, dans des récits dont le sujet et l’auteur ne se confondent pas. On peut appeler « biographique » l’ensemble des genres donnant des « récits de vie » (biographie mais aus...

  10. Introduction

    DEFF Research Database (Denmark)

    Levisen, Carsten; Sippola, Eeva; Bakker, Peter

    2017-01-01

    This study presents a semantics-driven lexical comparison of 20 creole languages and five European lexifier languages. Breaking new ground into understanding creole semantics, it utilizes insights from both cognitive semantics (in particular, the Natural Semantic Metalanguage approach) and phylog......This study presents a semantics-driven lexical comparison of 20 creole languages and five European lexifier languages. Breaking new ground into understanding creole semantics, it utilizes insights from both cognitive semantics (in particular, the Natural Semantic Metalanguage approach...

  11. Introduction

    DEFF Research Database (Denmark)

    Leschke, Janine; Jepsen, Maria

    2012-01-01

    and governments' policy responses have also been widening labour market inequalities between different groups within countries, the authors argue, as illustrated by the disproportionate growth of youth employment and their specific focus on gender inequality. Cross-national variations in the content and structure...

  12. Introduction

    DEFF Research Database (Denmark)

    Kristiansen, Tore; Sandøy, Helge

    2010-01-01

    1. Background: the laboratory As is well-known from the literature on language contact (e.g. Weinreich 1953; Thomason and Kaufman 1988) the factors and forces that are in play in close and longstanding contact between (speakers of ) two languages are both linguistic and social in nature......, and involve both quantitative and qualitative relationships. Indeed, the outcome of language contact is a question of numbers and frequencies in terms of use and users, of sameness vs. differencein terms of linguistic structure, of dominance vs. subordination in terms of socio-historical contexts, etc...... in Norway, the Faroes, Iceland and Greenland — eastwards in the case of Sweden and Swedish with a long history in Finland. And we may add the linguistic and socio-historical complexities that relate the Sami people in the far north to the southern majority populations of Norway, Sweden and Finland...

  13. Introduction

    DEFF Research Database (Denmark)

    Muchie, Mammo; Baskaran, Angathevar

    2013-01-01

    African countries, taken separately, or grouped together as a unit, still largely remain resource-based economies. The challenge is to change the resource-based economic structure into a science, technology, engineering and innovation driven knowledge based economic system. Taking this challenge...... head on means African countries have to organise their science, technology, engineering and innovation for a development agenda systematically, more in collaboration than in competition with one another. What appears to remain a deficit is the vast collaborative distance that still exists on matters...

  14. Introduction

    DEFF Research Database (Denmark)

    Kornberger, Martin; Justesen, Lise; Mouritsen, Jan

    2015-01-01

    What if value is neither an intrinsic quality of an object, nor a reflection of a subjects preferencesbut rather something that is organized and brought into existence through mechanisms, technologies and practices of valuation? This edited book addresses the question of valuation theoretically a...

  15. Introduction

    DEFF Research Database (Denmark)

    Jensen, Per Anker; Nielsen, Susanne Balslev

    2012-01-01

    In this book about research on Facilities Management (FM) leading researchers from the Nordic countries present their ideas and findings: • Past: The historical development and current trends in FM research in Denmark, Norway, Sweden and Finland. • Present: Ongoing FM research within the followin...

  16. Introduction

    DEFF Research Database (Denmark)

    Petersen, Hanne

    2010-01-01

    Introduktion til Religion in the 21st Century, der indeholder bidrag fra den afsluttende konference i Københavns Universitets satsningsområde 2003-2007 om Religion i det 21. århundrede. Bidrag om 'Political and Intellectual Challenge', 'The Religion and Science Debate', 'Islam and State Politics......', 'Secularism and State Politics' of 'Denmark and the Cartoons'....

  17. Introduction.

    Science.gov (United States)

    Goodman, Allen E.

    1985-01-01

    Political science departments were surveyed to determine the extent of course offerings on any aspect of the Vietnam War or its legacy. Survey results are discussed. Provided is a chart indicating the name of the university, course title, professor(s) teaching course, level and enrollment, and when offered. (RM)

  18. Introduction

    International Nuclear Information System (INIS)

    Stroetmann, C.

    1993-01-01

    Everybody who takes an interest in environmental policy knows about the difficulties involved at all levels in reaching the generally accepted goal of integrating environmental protection in other political fields - and the difficulties are even greater in a period of emerging economic recession, since many still mistakenly view environmental protection as an unnecessary extravagance. This holds true for policies not only et EC level but also at the national level. It has been clear now for some time that the task of protecting the natural environment largely transcends individual fields of policy. The cross-section clause in Article 130 r paragraph 2 s. 2 of the EEC Treaty, according to which the demands of environmental protection are an integral part of the other policies of the Community, is a genuine legal innovation. (orig./HSCH) [de

  19. Introduction

    DEFF Research Database (Denmark)

    Jacobsen, Marc; Herrmann, Victoria

    2017-01-01

    therefore continues to move the discourse of polar security beyond – but not excluding – the conventional debates of military capabilities and state sovereignty towards a more comprehensive definition of security, including its interacting environmental, economic, political, health and cultural dimensions....

  20. Introduction

    DEFF Research Database (Denmark)

    Andersen, Dorte Jagodic; Sandberg, Marie

    2012-01-01

    Addressing and conceptualizing the changing character of borders in contemporary Europe, this book examines developments occurring in the light of European integration processes and an on-going tightening of Europe's external borders. Moreover, the book suggests new ways of investigating the nature...... of European borders by looking at border practices in the light of the mobility turn, and thus as dynamic, multiple, diverse and best expressed in everyday experiences of people living at and with borders, rather than focusing on static territorial divisions between states and regions at geopolitical level...

  1. Introduction

    International Nuclear Information System (INIS)

    Jastrzebski, J.

    2007-01-01

    The Heavy Ion Laboratory of the Warsaw University is a 'User type' facility, providing heavy ion beams to a number of Polish and foreign research groups and, to limited extent, for its own research programme. In 2006 the Warsaw cyclotron has operated during about 2500 hours of beam on target. 18 experiments, all recommended by the Program Advisory Committee, have been performed by more than one hundred facility users. Their scientific achievements are presented in this Report. This year the publication harvest was slightly smaller as compared to previous years. However, the first Phys. Rev. Letters paper, based completely on the HIL data, should be noticed. The important part of the Laboratory team effort was devoted to educational and science popularization activities, described in details in the following pages of this report. Here, I would like to especially mention the Workshop on Heavy Ion Acceleration and its Application, devoted to physics students of Universities outside Warsaw. The 2006 Workshop was organized for the second time. We do hope, that this workshop will contribute to establishing in Poland more formal recognition for inter-university students and tutors exchange. This, as we hope, will benefit in the Ministry funding of this programme in the future. In 2006 the Laboratory equipment was further developed. The ICARE particle multidetector system was installed on the beam line D and was tested using 16 O beam. Work is in progress on improving its characteristics (signal processing and acquisition) and on expanding possible applications by adding the Time-of-Flight components. The project of a new gamma-ray spectrometer with up to 30 Ge detectors was prepared, discussed and preliminary accepted for realization, when necessary funds are available. In the mean time a new particle detector chamber was tested in coincidence with the OSIRIS II set-up, demonstrating a substantially higher efficiency and lower background in the Coulomb excited gamma-ray spectra. An irradiation facility for radiobiological studies described in details in the last year Annual Report was also presented in a recent publication. Finally, after many years of unsuccessful applications, 50% of funds necessary for the acquisition of a new ECR ion source were allocated by the Ministry of Science and Higher Education at the end of 2006. At present commercial offers are evaluated. Besides running of the U-200P cyclotron, educational activity, development of new experimental tools, and participation in experiments using local and European facilities, the Laboratory team is strongly involved in many new projects. Basing on funds allocated by the Ministry of Scientific Research and Information Technology, International Atomic Energy Agency, and the Ministry of Health, the project of the installation in the Laboratory building of a second p/d cyclotron for the production of PET radiopharmaceuticals is in progress. The short history and current situation of this project is presented in the following pages of this report. The Laboratory is also involved in the Polish Hadron-Therapy Consortium, contributing to the preparation of the project of the National Hadron-Therapy Center in Warsaw. European Structural Funds allocated to Poland for 2007-2013 open a possibility to acquire funds for realization of such an initiative. Basing on the same source of funding, plus the resources of 7FP, the Laboratory launched the idea of the preparatory program for constructing in Poland a demonstration facility for High Temperature Nuclear Reactor in synergy with coal. The Consortium of Polish Universities and industrial partners was organized. The project was accepted by Polish Government and placed in the first place of the list of Large Projects in the '' Innovative Economy Programme ''. It will be discussed with European Commission. More information on this project can be found on the Laboratory web pages. (author)

  2. Introduction

    Directory of Open Access Journals (Sweden)

    Svetlana Cojocaru

    2008-04-01

    Full Text Available It is more than 10 years since we have published our first special issue devoted to the Computer Algebra. For us it was a starting point for the development of Computer Algebra in Moldova. Looking back we can say that this was a period during which we have found our own place in this very important part of modern Computer Science. It was, of course, impossible without the help of our colleagues from other countries, without the financial support from INTAS and Swedish Academy of Science. In fact the most part of articles, published in this issue was supported by INTAS project Nr 05-104-7553 and we are very grateful for this important help.

  3. Introduction

    OpenAIRE

    Baumert, Nicolas; Guichard-Anguis, Sylvie

    2015-01-01

    Le séisme du 11 mars 2011 qui a frappé le Japon a provoqué une catastrophe majeure dont les images, largement diffusées dans les médias, ont rappelé par la violence de l’aléa (évalué à 9 sur l’échelle de Richter), la vulnérabilité des sociétés humaines face à l’enchainement des risques naturels et humains. À la succession de destructions ayant fait près de 20 000 victimes, et à l’accident nucléaire de la centrale de Fukushima n° 1 près d’Iwaki, s’est ajoutée une crise alimentaire sévère qui a...

  4. Introduction

    Science.gov (United States)

    de Graauw, T.

    2010-09-01

    As this editorial is written, we have seven antennas at the Chajnantor plateau, the "High Site". Seven antennas means twenty-one baselines, i.e. more than twice as many as we had only two months ago. As you know, the bonus we have in interferometry is that the the number of baselines increases roughly with the square of the available antennas. The image quality can be further enhanced, because the projection of a celestial source onto the existing baselines changes due to the rotation of the Earth. A large number of baselines is important but not sufficient to fulfill one important promise of ALMA, namely to provide crisp images. Unlike the sharp images from the Hubble Space Telescope, images from ground based optical or radio telescopes are blurred by the Earth's atmosphere. It is the Holy Grail of observing astronomy to overcome such atmospheric effects. Recently, ALMA has made a big step toward this goal by using Water Vapor Radiometers operating at 183 GHz to measure the amount of atmospheric water vapor at any instant in the line of sight of each antenna, and applying a corresponding correction to the astronomical data received. This not only improves the image quality, it is essential for using ALMA at its lowest wavelengths of around 0.3mm and at baselines exceeding several kilometers. Achieving this has a been a collaborative effort involving many parts of the project and there are all to be congratulated. JAO has now moved into our new Santiago Central Office in Vitacura next to the ESO premises, ending a phase of two years were Santiago based staff was distributed in two different buildings. This new ALMA office will also host the ALMA archive. Although ALMA users are normally not expected to come to Chile to observe, there will be office space for visitors, since ALMA has been and will always be a cooperation of people from many countries and many fields of science and engineering. This newsletter contains a list of workshops, schools and conferences dealing with ALMA, reflecting the interest of the astronomical community in our project. I invite everybody to join these events in order to discuss the exciting science made possible with ALMA, and to learn how to use this instrument in an efficient way. After all, the first call for ALMA observing proposals will be released very soon. After having served as ALMA Project Engineer since 2004, Rick Murowinski has decided to go back to Canada. We thank him for his important contributions to our project during very crucial years and wish him all the best for his future career.

  5. Introduction

    Science.gov (United States)

    Bub, Jeffrey; Fuchs, Christopher A.

    The great debate between Einstein and Bohr on the interpretation of quantum mechanics culminated with the Einstein-Podolsky-Rosen (EPR) paper in 1935, "Can quantum-mechanical description of physical reality be considered complete?" (Einstein, Podolsky, & Rosen, 1935, and Bohr's reply, 1935). EPR showed that composite quantum systems, consisting of widely separated subsystems, could exist in certain quantum states that they thought spelled trouble for the Copenhagen interpretation. Specifically, they argued that for such states, the correlations between the outcomes of measurements on the subsystems were incompatible with the assumption that the quantum state was a complete description of the system. They concluded that quantum mechanics was an incomplete theory-that the quantum state could not be the whole story about a system.

  6. Introduction

    International Nuclear Information System (INIS)

    2003-01-01

    In this chapter the implementation history of the of Inter-disciplinary research complex in the L.N. Gumilev Eurasian State University is illuminated. The responsible institutes participating in the complex designing and it putting into operation are presented. It is noted, that the complex should be a principle facility for solution problems on chemistry, physics and a wide scale advanced technologies. It is suggested, that a nuclear membranes production in the heavy ion accelerator (the key facility of the complex) can be integrating factor of different disciplines and branches and would be a basis for both the nano-technologies and a knowledge intensive business

  7. Introduction

    Science.gov (United States)

    Mac A. Callaham

    2016-01-01

    This special issue of Applied Soil Ecology contains the Proceedings of the 10th International Symposium on EarthwormEcology (ISEE-10), held in Athens, Georgia, USA in June of 2014. ISEE-10 was attended by 120+ delegates representing 24 nationalities (Fig. 1). The papers collected here represent only a small fraction of the more than 150 oral and poster...

  8. Introduction

    African Journals Online (AJOL)

    spacing of 50 cm between the p ants and rows. The experimental field received. 94.3 kg/ha P20 6, 62.5 kg/ha K20 . The plot received 66 kg/ha of nitrogen at the time of tran,splanting, 3 weeks and 5 weeks after transplanting. The experiment consisted of three irrigation methods. viz. drip., micro-sprinkler and check-basin, ...

  9. Introduction

    Science.gov (United States)

    Narlikar, J. V.; Sathyaprakash, B. S.

    2014-03-01

    The ICGC Meetings: 1987-2011 When India became an independent nation in 1947, the presence of Jawaharlal Nehru on the scene, as the Prime Minister was a fortunate circumstance. For, Nehru was a visionary, who believed that the future of the new nation should be guided by science and technology (S & T), and so with like-minded scientists like, Shanti Swarup Bhatnagar, Homi Bhabha, Meghnad Saha, and Daulatsingh Kothari in leading positions, Nehru set about creating an extensive infrastructure for S & T. The initiatives taken in and around 1947 began to yield dividends in a couple of decades, and by the late 60s and early 70s, major S & T organizations and associated trained human resources were making significant contributions to the country's development, both material and intellectual. Amongst these may be included, the creation of various scientific societies devoted to specific subjects. These came in response to the urge of scientists to meet as a group for discussions in their fields of research. So, it was in 1969, a number of research workers in the field of general relativity and gravitation (GRG), who had gathered for a workshop in Ahmedabad, resolved to form a society for GRG. The initiative was taken by P C Vaidya, who pointed out the advantages of forming such a recognized group, mentioning that the international community of workers in GRG had already formed such a society. The Indian Association for General Relativity and Gravitation (IAGRG), thus, came up in 1969 with the veteran relativist V V Narlikar, as its first President. Some three years later, the astronomical community responding to a similar urge, formed the Astronomical Society of India (ASI), under the presidency of Vainu Bappu, the Founder Director of the Indian Institute of Astrophysics, Bangalore. Since the days of discovery of quasars in 1963, there has been an alliance between gravitation theorists and astrophysicists, resulting in the Texas Symposia, which are held once every two years. The International Society of GRG, referred above, also has a world congress (numbered GR-n) once in four years. The ASI and IAGRG have, naturally, many members in common, and over the years, these organizations have grown. Their national meets take place approximately once in two years. It is customary to invite overseas scientists to these meets, if they happen to be visiting India. In the early 80s, the scientific community in India felt more ambitious, and debated the possibility of hosting a truly international meet in India. Thus, in 1985 the astronomers successfully hosted the General Assembly of the International Astronomical Union. The GRG members, likewise, were pressing for hosting a meeting in the GR-n series. Since the human resources and institutional base of relativists were not as wide and strong as of the astronomers, they were advised to proceed in stages. ''First successfully hold a miniature version of GR-n, and once your credibility and capability are established, bid for the big one.'' This was the advice of some international veterans. That is how the ICGC-series of conferences came about. The first ICGC As the name (International Conference on Gravitation and Cosmology) implies, the conference sought to combine the interests of the Texas Symposia as well as of GR-n. The meetings were planned to be once in four years starting in mid-December 1987. (This was the blank year for the Texas Symposium.) To launch them in an impressive manner, the opening meeting was planned to be in the famous tourist resort state of Goa. As IAGRG lacked the infrastructure to organize such a conference, the main organizational responsibility had to be taken up by one of the research institutes; and the biggest amongst these was the Tata Institute of Fundamental Research (TIFR), Mumbai. The TIFR, therefore, was approached, and agreed. As the 'most interested person" from TIFR, I was put in charge of the enterprise. Of course, I had the backing of my senior colleague Kumar (S.M.) Chitre and the younger one, Ajit Kembhavi, and the organizational infrastructure of TIFR. In particular, the then administrator dealing with scientific meetings, Parelkar enthusiastically joined me to set up the local boundary conditions in Goa. To get our priorities right, we first picked upon Hotel Mandovi in Panjim (Capital of Goa) as the nodal hotel for catering, accommodation, and arrangements of the academic sessions. We were expecting around 100 participants with 50% from abroad. Kamat, the Manager of Hotel Mandovi, promised all help including beds in nearby hotels to make up any shortfall. Regarding the quality of food, for which Hotel Mandovi was justly famous, its in-charge, Satish Prabhu took care of all our worries. Delegates may still recall the various Goan delicacies featured on the conference menus. Parelkar negotiated the basic deal with the hotels to extract the maximum benefits for the conference. But we were still rather vulnerable in lack of the local conditions. An unexpected helping hand came to make up for our lack of local knowledge. The amateur astronomer organization, called ''Friends of Astronomy in Goa'', led by their venerable President, Percival Noronha offered to run errands for us and play the role of local volunteer. Noronha had been associated with the state government of Goa, since the days when it was a Portuguese colony. His 'inside knowledge' came in useful, especially when he advised us to request the Chief Minister, Pratapsingh Rane to entertain the conference participants in the state catamaran. Somewhat hesitatingly, I wrote a request letter, and to my delightful surprise, the CM agreed. Indeed, the boat-ride followed by the CM's riverside banquet was the entertainment high point of the conference. The food, Goan drinks, and musical entertainment were well appreciated by the participants, and an uninitiated person might be forgiven for thinking that ICGC stood for ''International Conference on Goan Conviviality''. However, it was the academic menu of ICGC-1987 that took precedence over anything else. The Scientific Organizing Committee, consisting of Vishveshwara (Vishu, if your tongue is not up to pronouncing the full name) as the Chairman, and Ashtekar, Barrow, Bertotti, Brill, Carr, Hartle, Hu, Iyer, MacCallum, Narlikar, Novikov, Penrose, and Sciama reflected a nice international mix as well as a mix of active branches of Gravitation and Cosmology. Later meetings The original intention of meeting every four years in some part of India was honoured by the community, and accordingly, the ICGC met in Ahmedabad (1991), Pune (1995), Kharagpur (2000), Cochin (2004), and Pune (2007) before reconvening in Goa in 2011. These meetings were more modestly planned, and instead of trying to cover many fields, each meeting was limited to some specialized topics. Thus, the Kharagpur meeting had highlighted gravitational waves, while the Pune (1995) meeting had emphasized the Raychaudhuri equation and the singularity theorems. These conferences did help to put India firmly on the map of GR and Cosmology, to the extent that the GR-15 was held successfully in Pune with Naresh Dadhich from IUCAA playing the main coordinator's role. It has been a pleasure to see young blood being attracted to these areas of research. Two major developments are on the horizon at the time of writing this piece. The LIGO is planning to set up an extra detector of gravitational waves in India with local help, both in hardware and software. Likewise, steps are being taken for India to join the TMT mega-telescope project as an international partner. These heartening developments help us to bear the loss of old doyens like, V V Narlikar, P C Vaidya, and A K Raychaudhuri. Though 'small is beautiful' is a truism, the decision was taken to return to Goa with a wider and richer academic menu to recall and celebrate the first ICGC. This is how we all find ourselves in Goa and its pleasant surroundings. As they say: ''Your problem is simplified if you choose the right boundary conditions!'' J V Narlikar Inter-University Centre for Astronomy and Astrophysics (IUCAA) Post Bag 4, Pune University Campus, Ganeshkhind, Pune 411007, India E-mail: jvn@iucaa.ernet.in

  10. Introduction

    DEFF Research Database (Denmark)

    Michelsen, Anders Ib; Hyams, Inger; Dinesen, Cort

    2017-01-01

    This book presents contributions of drawing and text along with their many relationalities from ontology to history and vice versa in a range of reflections on architecture, drawing and topology. We hope to thereby indicate the potential of the theme in understanding not only the architecture of ...

  11. Introduction

    DEFF Research Database (Denmark)

    Mortensen, Peder Duelund; Feuerhake, Eduardo

    2005-01-01

    Bogen beskriver den særegne arkitektur, som kendetegner den sydchilenske øgruppe Chiloe Archipelago. Huse i træ udviklet i en lang tradition fra fiskerlandsbyernes Palafitos til et stort antal kirker, hvoraf 16 er på Unescos liste. Videreført i moderne arkitektur....

  12. Introduction

    African Journals Online (AJOL)

    Choice-Academy

    Effect of Fuel wood on the Quality of Smoked Freshwater Fish Species Sold in Tamale. Central Market, Northern ... refrigeration as means of preventing the fast ... species into good and bad smoking fuel wood ; ..... Fish processing: Food Cycle.

  13. Introduction

    International Nuclear Information System (INIS)

    Jastrzebski, J.

    2004-01-01

    Full text: The year 2003 was a consecutive period of a regular activity of the Heavy Ion Laboratory. The Cyclotron was delivering the heavy ion beams ranging from 11 B to 40 Ar to ten different experiments during more than 2000 hours. A few teams were able to finalize their previous years data collection by papers published in high-ranked journals. Other teams published in the proceedings of the international conferences their invited talks or oral contributions. Thirteen publication in ISI listed journals appeared last year basing on the data obtained using Warsaw machine. A similar number was published by the Laboratory staff using external facilities. The modest technical upgrades presented in this Report were achieved almost with no cost above the salaries. The 15 % decrease of the previous years running subvention from the Ministry of Science and Informatics accompanied by a consecutive refusal to fund the new ECR ion source makes the status of the Laboratory as the nuclear physics center in a very precarious position. The situation looks much more promising with the new project: the creation of an interdisciplinary Laboratory - the Warsaw Positron Emission Tomography Centre, launched by the Heavy Ion Laboratory and the Nuclear Medicine Department at the Clinical Hospital of the Warsaw Academy of Medicine in 2001. In 2003 the Warsaw Consortium for PET Collaboration (WCPC) was created and presently it takes an active role in the project preparation. The WCPC will dispose of a single radiopharmaceuticals production unit located at HIL and equipped with a commercial proton/deuteron cyclotron, chemical units and quality control laboratory. The PET CT, PET or adapted SPECT scanners will be successively located in the Warsaw hospital centers, starting with the medical unit closest (500 m) to the radiopharmaceutical production place. The participation in the WCPC of numerous University and Academy of Sciences units will promote the Warsaw Centre activity in research and education area. The planned purchase of the micro-PET, animal scanner will substantially help in this activity. In 2003 a proposal was submitted to the Technical Co-operation Programme of the International Atomic Energy Agency (IAEA) for a partial support of the Warsaw PET Centre equipment purchase and activity. This proposal got a strong support and written promises of the local financial contribution from Ministry of Sciences and Informatics and Ministry of Health. It is hoped that the Warsaw PET Centre will begin its diagnostic, research and educational activity in 2006. Starting from this time the Laboratory with its well trained team will operate two cyclotrons, one for research, the another one for radioisotope production. (author)

  14. Introduction

    Science.gov (United States)

    Arnold, Steven M.; Wong, Terry T.

    2011-01-01

    It would be hard to argue against the fact that Integrated Computational Materials Engineering (ICME) is a fast growing discipline within material science and engineering. A quick scan of the proceedings from conferences such as Aeromat, Material Science and Technology, and the TMS Annual Meeting clearly shows it. What began a few years ago as one symposium has grown into multiple ICME related symposia at each of these conferences. As encouraging as the number of symposia being offered is the attendance at the symposia. For example, one of the ICME symposia at MS&T 10, the symposium in which this book is based, had five sessions which culminated in a panel discussion that was standing room only. In addition to the large, annual materials science and engineering conferences, smaller 1 to 2-day conferences/workshops sponsored by government agencies (e.g. AFRL and NIST) on specific aspects of ICME and by universities promoting their ICME work are regularly offered. And arguably the most significant news with regards to ICME and conferences is the July 2011 First World Congress on ICME. This five day TMS sponsored conference, specifically focused on ICME with an international advisory board of ICME leaders, shows how far ICME has spread across the globe. Evidence for the growth of ICME can also be found in Academia. The University Materials Council (UMC) is composed of department heads for material science and engineering from major U.S. and Canadian universities. Meeting twice a year to share best practices in order to strengthen both the engineering content [1] and the educational process, the UMC s agenda for their Spring 2010 meeting was dedicated to ICME [2]. This meeting was held in response to the growing awareness that the universities play a major role in the success of ICME and therefore need to develop ICME curriculum in order to meet that need. To aid educators in the development of ICME courses, NSF is funding a "Summer School" on ICME to be held at the University of Michigan in 2011 [3]. Northwestern University recently announced a MS Certificate Program in ICME [4]. Course work for this certificate begins in the Fall of 2011. Other signs that ICME is growing comes from the formation of ICME initiatives from work that did not start off with ICME in mind. One of the committees in ASM International is the Materials Properties Database Committee (MPDC). In the 2010 meeting of the MPDC, based on a study by ASM, the committee decided that it would create an ICME sub-committee in order to determine how ASM can meet the growing needs of the ICME community [5]. In 1999, the Air Force Research Laboratory (AFRL) created a consortium, the Metals Affordability Initiative (MAI), with members from both industry and government with a goal of reducing the cost and time to market of producing metal parts for aerospace applications [6].

  15. Introduction

    Directory of Open Access Journals (Sweden)

    Helge Hvid

    2016-12-01

    Full Text Available In this issue, four articles are published. Corin and Björk present a study of the psychosocial work environment among managers in public schools and in public elder care in Sweden. The study provides new insight into the working conditions of managers in the public sector, and at the same time, the study contributes to the development of research methods in the field. The study is based on Demerouti and Bakkers’ Job Demand-Resource model, which summarizes several well-known models for the studying of psychosocial work environment, primarily the Demand Control model of Karasek and Theorell and the Efford Reward model of Siegrist. The Job Demand-Resource model is most often used in survey studies, where employees assess their working conditions in a questionnaire. Corin and Björk, meanwhile, use the model as a basis for a qualitative study, which forms an external assessment of job demands and job resources. They use the ARIA method, based on the German ‘activity theory’. The study suggests that there is a strong imbalance between demands and resources in managers' work and the study illustrates how surveys and qualitative studies could be combined in a fruitful way (...

  16. Introduction

    OpenAIRE

    Helge Hvid

    2016-01-01

    In this issue, four articles are published. Corin and Björk present a study of the psychosocial work environment among managers in public schools and in public elder care in Sweden. The study provides new insight into the working conditions of managers in the public sector, and at the same time, the study contributes to the development of research methods in the field. The study is based on Demerouti and Bakkers’ Job Demand-Resource model, which summarizes several well-known models for th...

  17. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1993-01-01

    This section of the report describes the history of the tribology program of the Office of Transportation Materials (OTM) in the Office of Transportation Technologies (OTT). The mission of the Office of Transportation Technology is discussed. OTT`s research objectives focus on (1) automobiles and light-duty trucks and vans and (2) heavy duty trucks and buses. Even small gains in efficiency can produce large paybacks for the tax dollar. The mission of the Office of Transportation Materials is also described. Its research objective is to enable the development and engineering of energy-efficient transportation systems that will make possible the transition of the U.S. transportation sector from dependence on petroleum to alternative fuels and electricity. The mission of the Tibology Program is to provide the base technology to enable savings in annual U.S. energy consumption through tribological advances in the transportation sector. Current task areas are in the fields of advanced lubrication, engineered tribological interfaces, advanced tribomaterials and components, and project management.

  18. Introduction

    International Nuclear Information System (INIS)

    Attansi, E.D.; DeYoung, J.H. Jr.

    1991-01-01

    This paper reports that the outlook for exploration depends on the economic health of the mining industry and, in turn, general economic conditions. It is too early to determine the overall impact of the cessation of hostilities in the Persian Gulf War. Its conclusion would allow funds to be redirected to individual country's economies. The rebuilding of the war-damaged countries will probably translate into net increases in demand for the minerals industry. A return to stability in energy costs will also benefit the mining industry. Alternatively, the capital requirements to rebuild war-torn countries could put some strain on capital markets and affect the funds available for private commercial investment. Along with increasing the cost of capital to mining operations, a capital shortage could stall recovery of western industrialized economies that are currently in recession

  19. Introduction

    DEFF Research Database (Denmark)

    Agger, Annika; Damgaard, Bodil; Krogh, Andreas Hagedorn

    2015-01-01

    of collaborative innovation processes; 3) Leadership is important for promoting collaborative innovation; and 4) Collaborative public innovation is relevant at all levels of governance. On these grounds, the chapter concludes that a promising research field is emerging but is still in its infancy and further......Governments all over Northern Europe have placed public innovation high on the political agenda. European governance researchers are seeking to map the impact of efforts to promote public innovation with a particular focus on the role of collaborative forms of governance in achieving this...... presented in the book point to a number of important preliminary findings regarding the role of collaborative forms of governance in enhancing public innovation: 1) Collaborative public innovation transforms mindsets, role perceptions and work forms; 2) Design matters for the success and failure...

  20. Introduction

    Science.gov (United States)

    Dum, Ralph

    Various types of diverse networks — communication networks, transport networks, global business networks, networks of friends, or the Internet — shape our daily life and the way we think and act. We depend on various social, economic, and technological networks that weave a tissue of businesses, governments, technologies and that contain us as citizens, users, or customers. We only become aware of our dependence if failures occur in these networks: when cities are plunged into darkness because of a breakdown of the power grid like happened recently in New York, when national economies collapse because of a failure of global financial systems like happened in the South-Asian banking crisis, or when computer viruses spread with mind-boggling speed over information networks destroying or, even worse, exposing sensitive data.

  1. Introduction

    Directory of Open Access Journals (Sweden)

    Éric Gonzalez

    2009-11-01

    Full Text Available For over a century and in modes ranging from hagiography to protest, popular music has been a prime theatre of observation and representation of the United States on record, in concert and more generally in the performing arts. Studying this field, with its senders—artists and their productions—and its receivers—gatekeepers and audiences—enables us to cast a different light on the USA as a source of inspiration, rejection and attraction for musicians on both sides of the Atlantic in order to ...

  2. Introduction

    DEFF Research Database (Denmark)

    Grosser, Kate; McCarthy, Lauren; Kilgour, Maureen A.

    2016-01-01

    together academics, practitioners and policy-makers in what was perhaps the first wide-ranging discussion of the impacts of business with respect to gender relations and gender equality, in the context of research on corporate responsibility. The chapters in this volume were largely commissioned from......The idea for this book grew out of the work on gender and corporate social responsibility (CSR) undertaken at the International Centre for Corporate Social Responsibility (ICCSR), Nottingham University Business School (UK). Beginning in 2003, this research and teaching agenda expanded quite rapidly......, attracting Business School, external and ESRC funding and the attention of international scholars. In June 2013, the ICCSR held the International Symposium on Gender and Responsible Business, the first of its kind in the United Kingdom. One of the most valuable things about this event was that it brought...

  3. Introduction

    OpenAIRE

    Balding, David J.; Gastwirth, Joseph L.

    2003-01-01

    The word "statistics" derives from the collection and use of data to assist in the administration of a state (nation). The justice system is one of the fundamental pillars of a state, and is central to the political life of most countries. Ideas from probability and statistics have been used to try to model and improve methods of legal decision-making since the earliest days of our discipline in the 16th and 17th centuries. More recently, the debate over the Bayesian statistica...

  4. Introduction

    DEFF Research Database (Denmark)

    Vigh, Henrik Erdman; Bjarnesen, Jesper

    2016-01-01

    Wars unsettle our commonsense understandings of movement and mobility. Simultaneously entropic and inertial, they conjure up images of rampant disorder and chaos as well as strained and crippled formations locked in negative tension. On the one hand, detrimental movement; on the other, deadly...... stalemate. Both mobility and immobility are, as such, associated with the iconography of warfare and conflicts. They may be presented as out of time through pictures of empty streets, ruins, trenches, and dead bodies frozen in contorted positions, yet, conversely, some of the most archetypical images of war...

  5. Introduction

    DEFF Research Database (Denmark)

    Grossi, Giuseppe; Hansen, Morten Balle; Johanson, Jan-Erik

    2016-01-01

    , Houlberg, and Bækgaard study the link between fiscal austerity and politicians’ use of performance information by using survey and documentary data from Danish municipalities. Grossi, Reichard, and Ruggiero examine the interest of politicians and public managers in the use of performance information......The five articles in this symposium examine the issues of comparative performance management and accountability in the age of austerity from different vantage points. Brusca and Montesinos carry out an international comparison of 17 countries studying key issues in the implementation of performance...... for decisionmaking and monitoring the budget cycle provided in the newly established performance budgets of municipalities in Germany and Italy. Poocharoen examines performance management in different types of interagency collaborations, presenting six case studies of management projects in the field of natural...

  6. Introduction

    African Journals Online (AJOL)

    Choice-Academy

    environmental degradation; to influence the farmers, fuel-wood dealers and brick industrialists to be aware ... depth researches on the impact of human activities on the biodiversity of basins. ..... climate change. .... Eroded soil and silt cloud the.

  7. Introduction

    International Nuclear Information System (INIS)

    Uresk, V.A.; Rogers, L.E.

    1977-01-01

    A general description of ecosystem functioning introduces the need for comprehensive ecological studies as part of the overall waste management operations on the 200 Area plateau. A history of waste management operations and location of 200 Area facilities is provided. An estimate of inventories of radioactive materials in the 200 Area cribs, ponds, and ditches at the end of September 1976 is included

  8. Introduction

    DEFF Research Database (Denmark)

    Hesselager, Jens

    2018-01-01

    The fact that French grand opera as a genre was closely connected to the institution of the Paris Opéra, and, more generally, to the contemporary urban context of Paris, has meant that scholars have often focussed specifically on understanding the phenomenon in relation to the original Parisian c...

  9. Introduction

    Directory of Open Access Journals (Sweden)

    Helge Hvid

    2015-12-01

    Full Text Available In this issue of Nordic Journal of Working Life Studies, we present seven quite different articles, all authored by researchers from Sweden. Three of the articles examine some general trends in working life: The first article examines the precariousness of the labor market, and two articles examine how increasing global competition affects the quality of work in the service sector in the Nordic countries. Four articles focus on mechanisms that create inequality in working life and the labor market: Gender inequality in the working environment is examined in two articles. In one article, it is examined how ethnic inequality is maintained in work organizations. And one article examines how stigmas from certain organizations are transferred to the employees of the organization (...

  10. Introduction

    Science.gov (United States)

    Cheng, K. S.; Romero, Gustavo E.

    In the last 15 years, gamma-ray astronomy has evolved from a promis-ing but rather exotic branch of astronomical science to become a mature field of research with its own well-defined referents: cosmic gamma-ray sources. These sources include some of the most extraordinary objects known to human beings: pulsars, active galactic nuclei, accreting black holes, supernova remnants, and gamma-ray bursts. A significant com-ponent of our current knowledge of such objects is the direct result of astronomical measurements of the high-energy photons they produce. Satellite-borne instruments that can detect gamma-rays in the Earth's orbit or in deep space and atmospheric air shower detectors that re-construct the energy and direction of high-energy photons through the Cherenkov light generated in particle showers produced in the Earth's atmosphere have been the basic exploratory tools of gamma-ray astron-omy. For many years, however, cosmic gamma-ray sources defied all attempts at their detection.

  11. Introduction

    DEFF Research Database (Denmark)

    Goodsite, Michael Evan; Møldrup, Mathilde; Hubbard, Emil Egerod

    2017-01-01

    The challenges of sustainability are becoming more apparent and changes need to take place in how we organise collectively. This book stems from and builds on a collaboration and collective learning between the military and the civilian world in order to facilitate discussion of the current state...

  12. Introduction

    Directory of Open Access Journals (Sweden)

    Ariel Jerez Novara

    2015-04-01

    Full Text Available In this text, we introduce the structure and logic of the monograph, which consists of five dialogues with activists of Podemos (Karpeta section and nine commentaries in the form of debate (A des/propósito section on the subject of this phenomenon realized by social researchers and media professionals. In the dialogues at the beginning of this issue of Teknokultura, we talk with some of the leaders of Podemos about their plan to confront the power of the establishments’politically, which has been intensified by the social and political discontent created by the crisis. The critical essays included in the second part, analyze this phenomenon drawing from two principal lines of discussion. The first is based on the technological and media dynamics which are part of the organization and its political project. The second responds to theoretical and political aspects, related to Podemos’ emergence and its capacity to intervene in a complex historical context, through the participatory and representative processes they have promoted.

  13. Introduction

    NARCIS (Netherlands)

    Abubakar Ali, A.; Van De Vijver, Fons J R

    2017-01-01

    In 2015, it was estimated that 41% of Africa’s population were children less than 15 years of age. Most of these children are exposed to multiple risk factors which may compromise their developmental outcomes. It is therefore important to develop intervention programs and strategies to address

  14. Introduction

    Science.gov (United States)

    Taussig, Karen-Sue; Gibbon, Sahra Elizabeth

    2013-01-01

    We introduce this special issue of Medial Anthropology Quarterly on public health genomics by exploring both the unique contribution of ethnographic sensibility that medical anthropologists bring to the study of genomics and some of the key insights offered by the essays in this collection. As anthropologists, we are concerned with the power dynamics and larger cultural commitments embedded in practices associated with public health. We seek to understand, first, the broad significance of genomics as a cultural object and, second, the social action set into motion as researchers seek to translate genomic knowledge and technology into public health benefits. PMID:24214906

  15. Introduction

    Science.gov (United States)

    Starosvetsky, Yuli; Jayaprakash, K. R.; Hasan, Md. Arif; Vakakis, Alexander F.

    The study of mechanics of granular media dates back to the era of Coulomb. He was the first to postulate the yield condition for homogeneous solids and also conditions for failure in granular media [1-4]. In fact the ideal Coulomb material is the simplest granular material model wherein the shear stress along a plane is linearly proportional to the normal stress on that plane. This can be considered analogous to the Coulomb friction model in cohesion-free interfaces between solids. Initial research in this domain focused mainly on the statics of granular materials from a soil mechanics perspective. However, as the applications of granular materials broadened, the objectives of different research communities contradicted. For example, in geophysics or soil mechanics the objective is to regard granular media with properties of a solid in order to take considerable loads without yielding; on the other hand, in food grain or pharmaceutical industries the granular media is considered as fluids and their rheological properties are of interest. In fact granular media can exhibit both of these behaviors (and also the properties of a gas), and such unique features pave the way for their broad range applications...

  16. Introduction

    African Journals Online (AJOL)

    P.O.Box 33381 , e-mail: shimelisemire@yahoc.com. Fax: (+251-1) .... The seeds of eight Phaseolus vulgaris L varieties were used in this study and were .... Approximately 20 g of cooked beans were loaded on the specimen holder of the. LLOYD>K (Fig. 1) in a single layer and compressed with a compressing plate to the. 6 ...

  17. Introduction

    OpenAIRE

    Chartier, Pierre

    2007-01-01

    De Diderot à l’Encyclopédie et à l’Idéologie, de l’opposition janséniste au carnaval des fous, le sommaire de ce n° 25 offre un bon exemple de la richesse et de la diversité des objets qui nous occupent.Jean Sgard, d’abord, interroge l’image que les Nouvelles ecclésias­tiques ont donnée de Denis Diderot, cet incrédule qui a peut-être été un temps, au collège d’Harcourt, le disciple de maîtres jansénistes. Or on ne trouve que quelques rares mentions de celui qui fut sans conteste l’un des adve...

  18. Introduction

    International Nuclear Information System (INIS)

    Khasanov, A.Kh.

    1988-01-01

    In the preface author presents the description of book in particular that this book consists from three parts. In the fist part of book author considered the basic conceptions, geologic history, morphology, ores mineral composition, the classification of minerals. Second part of book devoted to studying of volcano-gene, exogenous and meta morpho-gene deposits. Studying of articles carrying out with taking into account the existent literature on the example of known world deposits; special emphasis devote to deposits of Tajikistan and contiguous territories

  19. Introduction

    Science.gov (United States)

    Koper, Rob

    In 2003 we started a new research programme at the Centre for Learning Sciences and Technologies (CELSTEC) that was aiming to help people to further develop their professional competences by using the innovative powers of new media, mobile devices, and modern Internet services. The idea behind the programme was to contribute to one of the bigger challenges in our society: how to deal with the growing complexity, the growing quantity and the permanent changes in knowledge and technologies. For companies this question relates to the core of their business: how to become innovative and stay competitive. For the employees, the ‘professionals’, this question relates directly to their jobs: how to become and stay employable. In this book we will concentrate on the last group, the professionals and their question how to stay employable, how to keep up-to-date and how to develop professional competence during their careers. The professionals represent the human capital, the knowledge, the innovative power in our economy.

  20. Introduction

    International Nuclear Information System (INIS)

    Rusek, K.

    2011-01-01

    This year was a year of hope for change. We attempted to become one of the laboratories of the '' Road Map of National Research Infrastructure '' of the Ministry of Science and Higher Education (MNiSW) of Poland. At the beginning of the year we were informed by the MNiSW that we had passed the first selection with the suggestion that we prepare, as the next step, a joint project with the H. Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Science (IFJ) in Cracow. On the 21 st of April the Rector of the University of Warsaw and the director of IFJ created the consortium '' National Cyclotron Laboratory '', signing an agreement between our two institutions. In this way the two largest nuclear physics institutes in Poland, with two operating cyclotrons (a proton cyclotron in Cracow and the heavy-ion cyclotron in Warsaw) and two others becoming operational within the next two years, united their efforts and prepared a common project devoted to fundamental research in nuclear physics and its medical applications. Unfortunately, our project was not selected for the '' Road Map '' - a decision of the MNiSW incomprehensible to us. Since such a document must be regularly updated we will continue our efforts to find a place on the national '' Road Map ''. Despite our lack of success in our own country, on the European level our laboratory was recognised by the Nuclear Physics European Collaboration Committee (NuPECC). This important international body released in December the '' NuPECC Long Range Plan 2010, Perspectives of Nuclear Physics in Europe ''. Our laboratory is listed among other European small scale facilities with the recommendation - '' These national and other university based facilities are needed for specific experimental programmes, development and testing of new instruments and to provide education of next-generation researchers from university groups ''. It was not an easy year for experimentalists. In the spring the new Supernanogan ECR ion source was installed and during the installation period beam from the cyclotron was not available for users. The source was commissioned in May but its coupling with the cyclotron requires some additional changes to the cyclotron injection system. These will be introduced in summer 2011 and accelerated beams from the new source should be available for experiments in the second half of 2011. Due to the installation of the new source, the spring experimental campaign was limited to a few weeks in June and the beginning of July. Nevertheless, we would like to welcome new users - a group of physicists from the University of loannina, Greece, led by Prof. Athena Pakou and an international team led by Dr. Marcus Scheck. In September, construction work on new buildings for the Faculties of Physics, Biology and Chemistry started in earnest in the immediate neighbourhood of our laboratory. This caused many unexpected cuts in the power and water supplies and, in addition, some flooding in the basement of our building. We were therefore forced to limit our activity and postpone a series of planned experiments to the first half of 2011. Fortunately, in October we were still able to run some simple experiments for the 6 th edition of the Polish Workshop on Acceleration and Applications of Heavy Ions, a one week event for undergraduate students from Polish universities. From 2011 onwards, this activity will be extended - we will organise an annual two-week workshop for students from abroad within the framework of the Erasmus - LLP Intensive Programme. This initiative has received the necessary funding from the Polish National Agency of Erasmus - the Foundation for the Development of the Educational System Lifelong Learning. Programme. The workshop will be organised jointly with the University of Sofia, Bulgaria, and the University of Huelva, Spain. It does not happen every year so I would like to mention that the Heavy Ion Laboratory co-organised an international conference, the 17 th Nuclear Physics Workshop '' Marie (and) Pierre Curie ''. The general subject was '' Symmetry and symmetry breaking in nuclear physics ''. The conference took place in Kazimierz Dolny, from 22 nd till 26 th of September and attracted about seventy scientists from various countries. Our PhD students are among the best at the University of Warsaw. Katarzyna Hadynska-Klek was awarded a prestigious research scholarship funded by the European Social Fund in the framework of the Human Capital Programme. The greatest news came at the end of the year - our project '' Purchase and installation of two HF generators for the Warsaw U-200P cyclotron '' obtained full funding from the MNiSW. Thus, by the end of 2013 we should have exchanged our very old and worn out generators by new ones. After almost twenty years of constant activity this message brings a new lease of life to our laboratory. (author)

  1. Introduction

    NARCIS (Netherlands)

    Schildkamp, Kim; Lai, Mei Kuin; Schildkamp, K.; Lai, M.K.; Earl, L.

    2013-01-01

    Data-based decision making continues to receive ample attention in education. In this book we brought together research on data use conducted in seven different countries: The United States, Canada, New Zealand, the Netherlands, England, Belgium, and South Africa. Different questions will be

  2. Introduction

    OpenAIRE

    Erne, Lukas Christian; Kidnie, M. J.

    2004-01-01

    Introduces a collection of essays which brings together leading scholars to examine crucial questions regarding the theory and practice of editing Shakespeare's plays. In particular, the essays look at how best to engage editorially with evidence provided by historical research into the playhouse, author's study and printing house. How are editors of playscripts to mediate history, in its many forms, for modern users? Considering our knowledge of the past is partial (in the senses both of inc...

  3. Introduction

    OpenAIRE

    Keenan, Siobhan; Shellard, Dominic

    2016-01-01

    This chapter introduces the topic of Shakespeare’s cultural capital and the marketplace, offering an overview of some of the different ways in which Shakespeare and his work have been marketed and had an economic and cultural impact in, and since, his own day in the UK and beyond. This includes addressing the emergence of Shakespeare as a cultural icon, the wider impact of Shakespeare in fields such as education, and the commercial use of Shakespeare as a brand in the advertising and tourist ...

  4. Introduction

    Directory of Open Access Journals (Sweden)

    David M. Turner

    2017-11-01

    Full Text Available This article introduces contributions to the Special Issue of Disability Studies Quarterly on Disability, Work and Representation. Despite the common equation of disability with inability to do paid labor, disabled people have always worked. Historical experiences of the workplace have varied and have been influenced by means of production, employer and co-worker attitudes and by welfare systems that have impacted negatively on disabled people's abilities to take on employment. Studying the relationship between disabiltiy and work from a range of disciplinary perspectives not only sheds new light not just on disabled people's experiences in the workplace in different societies and at different historical moments, but also raises questions about the meaning of work and the values that underpin it.

  5. Introduction

    Science.gov (United States)

    Friend, Milton; Franson, J. Christian; Friend, Milton; Gibbs, Samantha E.J.; Wild, Margaret A.

    2015-01-01

    This is the third iteration of the National Wildlife Health Center's (NWHC) field guide developed primarily to assist field managers and biologists address diseases they encounter. By itself, the first iteration, “Field Guide of Wildlife Diseases: General Field Procedures and Diseases of Migratory Birds,” was simply another addition to an increasing array of North American field guides and other publications focusing on disease in free-ranging wildlife populations. Collectively, those publications were reflecting the ongoing transition in the convergence of wildlife management and wildlife disease as foundational components within the structure of wildlife conservation as a social enterprise serving the stewardship of our wildlife resources. For context, it is useful to consider those publications relative to a timeline of milestones involving the evolution of wildlife conservation in North America.

  6. [Introduction].

    Science.gov (United States)

    Gerard, Adrienne; van den Bogaard, Alberts

    2008-01-01

    Along with the international trends in history of computing, Dutch contributions over the past twenty years moved away from a focus on machinery to the broader scope of use of computers, appropriation of computing technologies in various traditions, labour relations and professionalisation issues, and, lately, software. It is only natural that an emerging field like computer science sets out to write its genealogy and canonise the important steps in its intellectual endeavour. It is fair to say that a historiography diverging from such "home" interest, started in 1987 with the work of Eda Kranakis--then active in The Netherlands--commissioned by the national bureau for technology assessment, and Gerard Alberts, turning a commemorative volume of the Mathematical Center into a history of the same institute. History of computing in The Netherlands made a major leap in the spring of 1994 when Dirk de Wit, Jan van den Ende and Ellen van Oost defended their dissertations, on the roads towards adoption of computing technology in banking, in science and engineering, and on the gender aspect in computing. Here, history of computing had already moved from machines to the use of computers. The three authors joined Gerard Alberts and Onno de Wit in preparing a volume on the rise of IT in The Netherlands, the sequel of which in now in preparation in a team lead by Adrienne van den Bogaard. Dutch research reflected the international attention for professionalisation issues (Ensmenger, Haigh) very early on in the dissertation by Ruud van Dael, Something to do with computers (2001) revealing how occupations dealing with computers typically escape the pattern of closure by professionalisation as expected by the, thus outdated, sociology of professions. History of computing not only takes use and users into consideration, but finally, as one may say, confronts the technological side of putting the machine to use, software, head on. The groundbreaking works of the 2000 Paderborn meeting and by Martin Campbell-Kelly resonate in work done in The Netherlands and recently in a major research project sponsored by the European Science Foundation: Software for Europe. The four contributions to this issue offer a true cross-section of ongoing history of computing in The Netherlands. Gerard Alberts and Huub de Beer return to the earliest computers at the Mathematical Center. As they do so under the perspective of using the machines, the result is, let us say, remarkable. Adrienne van den Bogaard compares the styles of software as practiced by Van der Poel and Dijkstra: so much had these two pioneers in common, so different the consequences they took. Frank Veraart treats us with an excerpt from his recent dissertation on the domestication of the micro computer technology: appropriation of computing technology is shown by the role of intermediate actors. Onno de Wit, finally, gives an account of the development, prior to internet, of a national data communication network among large scale users and its remarkable persistence under competition with new network technologies.

  7. Introduction

    NARCIS (Netherlands)

    Steenis, van C.G.G.J.

    1948-01-01

    After the appearance of RUMPHIUS’S Herbarium Amboinense, the result of lifelong research into the botanical treasures of the Malaysian Archipelago, the first comprehensive work on the flora of these islands was begun by C. L. BLUME, the second Director of the Botanic Gardens at Buitenzorg. His

  8. Introduction

    Indian Academy of Sciences (India)

    This type of study was initiated around 1834, with the discovery of decorated objects in the limestone caves and rock shelter deposits of the region when bones of mammoths, reindeer and horses were excavated. However, there was an uncertainty in dating these finds. Subsequently, in 1879, Altamira also provided ...

  9. Introduction

    International Nuclear Information System (INIS)

    Lanaro, Flavio

    2008-01-01

    This chapter illustrates the role of JAEA in conducting Research and Development on deep geological disposal of nuclear waste, on the reliability of the disposal technology and on safety assessment methods. Within this frame, the present study seeks a better understanding of the influence of the in-situ conditions on the sampling process through the analysis of sample damage. The correlation between sample damage and in-situ stress conditions provides a tool for correction of the laboratory test results and for predicting stresses and in-situ mechanical properties of the Toki granite at the MIU Construction Site (Mizunami, Gifu Pref., Japan). This study of the literature, sample conditions, available laboratory results and numerical models will lead to the proposal of a statistical method based on fractal geometry for quantifying cracking and fracturing in brittle rocks and describing its dependence on the level of stress. (author)

  10. Introduction

    International Nuclear Information System (INIS)

    Jastrzebski, J.

    2006-01-01

    The Heavy Ion Laboratory of the Warsaw University is the 'User type' facility, providing heavy ion beams to a number of Polish and foreign research groups and to limited extent for its own research programme. In 2005 the Warsaw cyclotron operated for close to 3000 hours of beam on target. 20 experiments, all recommended by the Program Advisory Committee, were performed by more than one hundred facility users. Their scientific achievements are presented in this Report. Here I would like to mention some highlights of the scientific projects with heavy-ion beams delivered by HIL cyclotron. Search for chirality in medium mass nuclei using OSIRIS-II set-up resulted in vivid discussion among nuclear spectroscopists, both theorists and experimentalists. Studies of the quasi-elastic barrier distributions revealed interesting phenomena, not yet fully explainable. Giant Dipole Resonance project with JANOSIK system yielded many new results. Coulomb Excitation investigation of shape coexistence in nuclei was progressing, providing data complementary to those from radioactive beams from CERN and GANIL. Also interesting results concerning optical-model potential in light nuclei interactions were obtained within Warsaw-Krakow-Kiev collaboration. Besides pure nuclear physics the cyclotron delivered beams for projects in solid-state physics, most notably connected to detector development as well as for biological studies. HIL remained an interdisciplinary user facility, keeping high profile of its scientific output, as can be judged from the list of publications contained in Part D of this Report. At the end of 2005 our experimental equipment started to be substantially enlarged. Thanks to the collaboration with the CNRS centre IRES in Strasbourg their excellent charged particle multidetector set-up ICARE was installed on the 'last-free' beam line of the Warsaw Cyclotron. After the well organized transportation and mechanical mounting by an experts team from IRES in collaboration with our mechanical workshop, this detector is now awaiting to receive the first heavy ion beam and to pass the operation tests. Besides the heavy ion machine, the Laboratory will soon be equipped with the second, low energy (16.5 MeV, p), high current proton - deuteron cyclotron for the production of short lived radiopharmaceuticals for the Positron Emission Tomography. As already presented in the last year Annual Report, this will allow the creation of an interdisciplinary laboratory, the Warsaw Positron Emission Tomography Centre. This project was launched by the Heavy Ion Laboratory and the Nuclear Medicine Department at the Clinical Hospital of the Medical University in Warsaw in 2001. In 2003 the Warsaw Consortium for PET Collaboration (WCPC) was created and presently it plays an active role in the project preparation. The WCPC will possess a single radiopharmaceuticals production unit located at HIL and will be equipped with a commercial proton/deuteron cyclotron, chemical units and a quality control laboratory. The PET CT, PET or adapted SPECT scanners will be successively located in the Warsaw hospital centers, starting with the medical unit closest (500 m) to the radiopharmaceuticals production place. The participation in the WCPC of numerous University and Polish Academy of Sciences units will promote the Warsaw PET Centre activity in research and educational area. The planned purchase of the micro - PET animal scanner will substantially help in this activity. After four years of efforts, in 2004 the Warsaw PET project obtained the financial support from the Ministry of Sciences and Informatization, which allocated 10 MPLN (about 2.4 MEUR) for the equipment of the Radiopharmaceuticals Production Department of the Warsaw PET Centre. At the end of the same year the Board of Governors of the International Atomic Energy Agency accepted our project of Technical Cooperation with the Agency and allocated almost 0.9 MUS$ for this project. The same year, Ministry of Health reiterated its written engagement to supply in 2006 the Warsaw PET Centre with a PET CT scanner. In 2005 the IAEA launched a tender for a turn - key project of the Heavy Ion Laboratory building adaptation and the supply of PET radiopharmaceuticals production equipment (cyclotron, radiochemistry units, quality control). During the common IAEA and HIL experts meeting in November 2005 the tender offers were evaluated and the Company General Electric Healthcare was selected as a best bidder. The official announcement of the tender results was issued by Agency in February 2006 and the contract negotiations started soon after. In the beginning of 2006 we responded to two calls, asking for the detailed description of our centre to appear in the international surveys of worldwide nuclear or European user type facilities, respectively. The first one was issued by the IUPAP (International Union of Pure and Applied Physics) and the second one by the European Commission, evaluating the European Research Infrastructures. Both questionnaires are included at the end of this Annual Report. (author)

  11. Introduction

    International Nuclear Information System (INIS)

    Bashtovoy, V.G.; Berkovsky, B.M.; Vislovich, A.N.

    1988-01-01

    The rapid development of magnetic fluid investigations, now an independent scientific trend, has been greatly promoted by the progress made in the field of mechanics and electrodynamics of continua and the physics of magnetic phenomena elucidated in monographs. The bibliography on magnetic fluids (MF) includes more than 1,500 references; among them more than 400 patents and Inventor's Certificates. Information on these studies is considered in surveys. Magnetic fluids are dealt with in monographs. Some survey papers are available. The proceedings of meetings, conferences and subject handbooks discussing the MF fluids are published. The MF studies may be related to one of the four sections. The particulars therein are the subject of this paper

  12. Introduction

    Directory of Open Access Journals (Sweden)

    Gilles Couderc

    2009-08-01

    Full Text Available Les articles qui suivent sont le fruit du colloque « Réécritures et livrets d’opéra dans le monde anglophone » tenu en novembre 2006 à l’Université de Caen et organisé par l’équipe de recherche « Littératures et Sociétés Anglophones » (LSA. Il s’inscrivait dans le cadre des axes de recherche développés par cette équipe qui s’intéresse aux enjeux non seulement esthétiques mais aussi sociaux de l’opéra, à la sociologie de la musique et aux pratiques culturelles impliquant la musique. Il faisai...

  13. Introduction

    Directory of Open Access Journals (Sweden)

    Jérôme Meizoz

    2006-09-01

    Full Text Available Il suffit de lire la liste des entrées de deux dictionnaires parus la même année 2002, pour constater que les approches de sociologie historique de la littérature et l’analyse du discours de tradition française partagent un certain nombre de questions et de notions communes.Dans le Dictionnaire du littéraire les articles « Discours », « Pragmatique littéraire », « Contexte », « Enoncé et énonciation » abordent plusieurs notions de l’analyse du discours. Dans le Dictionnaire d’analyse du disco...

  14. Introduction

    African Journals Online (AJOL)

    the Arab nation that prompted Mohammed to found Islam. He believed that he had .... simple reason that they would not eat pork. Eleazer could not .... to be noted that even though Islam forbids lying, "Lies are sins except when they are told for ...

  15. Introduction

    International Nuclear Information System (INIS)

    Williams, G.A.

    1990-01-01

    An account is given of the potential hazard associated with the sites of United Kingdom atomic weapon tests at Maralinga and Emu, between 1953 and 1963. Nine major nuclear trials involving atomic explosions and several hundred smaller scale experiments which dispersed radioactive materials, were performed at the two locations. Radioactive contamination on the ground has resulted from both the close-in fall-out and the action of the intense pulse of neutrons on elements in the soil and on residual device material. A brief enunciation of the main radiation surveys and clean-up operations is provided. 14 refs., 2 figs

  16. Introduction

    International Nuclear Information System (INIS)

    El-Hinnawi, E.E.

    1980-01-01

    The various components of the environment are described briefly, and the effect on these of the pollution or contamination arising from differing energy technologies (in particular from nuclear energy) is discussed. Several estimates of the growth of nuclear power by the year 2000 are tabulated. A summary is presented of the nuclear fuel cycle, including: types of reactors; the LWR fuel cycle; other fuel cycles. (U.K.)

  17. Introduction

    DEFF Research Database (Denmark)

    Steijn, Arthur; Ion Wille, Jakob

    2013-01-01

    In the spring of 2013 students from the Royal Danish Academy of Fine Arts, School of Design and Malmö University were engaged in programs part of the EU project, Musical Experience Design. The EU project is seeking development of innovative experiences within the context of live classical music...... and products, as well as sustainable business models. The main concern of the two educational programs was to examine the live format of symphonic music and create visual and/or interaction design that in one way or the other would enrich the experience of the live concert. The key question of the program...... at Royal Danish Academy of Fine Arts, School of Design was how one, as a designer, could contribute by creating meaningful interactions between classical music concerts and new visualization technologies....

  18. Introduction

    Directory of Open Access Journals (Sweden)

    Anne-Laure Van Bruaene

    2016-03-01

    Full Text Available After 450 years the Beeldenstorm of 1566 still deserves our careful historical analysis because it was unquestionably a game changer in Netherlandish politics and culture. More generally, we believe that iconoclasm breaks open cultural codes and thereby helps us to understand past societies. While we must thank the previous generations of historians for taking the iconoclasts seriously, the historians and art historians in this issue go a step further by also taking seriously the targets of iconoclasts – lay Catholic devotion and religious material culture. This theme number analyses the dialectics between iconoclasts and the material objectsthey targeted, between those who attacked and those who actively or passively defended the traditional community, between those who destroyed and those who restored or reinvented the religious patrimony, and in doing so reveals what was at stake in the sixteenth-century Low Countries.  Na 450 jaar verdient de Beeldenstorm van 1566 nog steeds een grondige historische analyse, aangezien er weinig twijfel kan bestaan over de enorme impact op de politiek en cultuur van de Nederlanden. Meer algemeen beschouwen wij iconoclasme als een kraker van culturele codes die ons helpt samenlevingen uit het verleden te begrijpen. Vorige generaties historici hebben zich vooral verdiept in de motieven van de iconoclasten, deze groep historici en kunsthistorici gaat verderdoor ook de doelwitten van de iconoclasten – de katholieke lekendevotie en de religieuze materiële cultuur – tot object van studie te maken. Dit themanummer ontrafelt de dialectiek tussen iconoclasten en de materiële cultuur die ze viseerden, tussen mannen en vrouwen die de traditionele gemeenschap aanvielen en deze die haar actief of passief verdedigden, tussen zij die het religieuze patrimonium vernielden en zij die het herstelden of herijkten. Op die manier wordt duidelijk waar het om draaide in de zestiende-eeuwse Nederlanden.

  19. Introduction

    DEFF Research Database (Denmark)

    Pless, Stephan A; Ahern, Christopher A

    2015-01-01

    of the heart beat, support a myriad of neuronal communication pathways, insulin secretion, and are central to the immune response, with more roles being discovered virtually everyday. Thus, ion channel function is a biophysical process that is central to biological life at many levels. And with over 500...

  20. Introduction

    Science.gov (United States)

    Rossing, Thomas D.

    String instruments are found in almost all musical cultures. Bowed string instruments form the backbone of symphony orchestras, and they are used widely as solo instruments and in chamber music as well. Guitars are used universally in pop music as well as in classical music. The piano is probably the most versatile of all musical instruments, used widely not only in ensemble with other musical instruments but also as a solo instrument and to accompany solo instruments and the human voice.

  1. Introduction

    Directory of Open Access Journals (Sweden)

    Marc Chenetier

    2006-01-01

    Full Text Available This « concept » or « test » issue  of the European Journal of American Studies gathers a series of presentations on the state of and problems posed by American Studies in a variety of European countries. As we endeavored to take advantage of the potential new dimension that might be given American Studies in Europe thanks to the generous hospitality of the « revues.org » website, it seemed fit to give Americanists and all readers interested in American Studies a general sense of the situatio...

  2. Introduction

    African Journals Online (AJOL)

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    Ethiopian Journal of Environmental Studies and Management Vol.3 No.1 2010. 1Department of ... Sustainability as a concept involves a number of different strands. Environmental ... Today, the Romanian hospitality industry ... strategies of sustainable development emphasize ..... practical reality in most cases, the impacts of.

  3. Introduction

    Directory of Open Access Journals (Sweden)

    Javier González Díez

    2016-08-01

    Full Text Available This article starts from the remark that anthropology of religion and urban anthropology have been following different – and sometimes divergent – historical trajectories. Only in recent years the two perspectives started a dialogue and laid the foundations for a renewed study of religions in urban contexts. Against this background, the article claims the necessity for anthropological studies in which the approaches of anthropology of religion and of urban anthropology are put in contact. In order to answer to the problems that are at the basis of this special issue, we analyse the state of the art of the subject and describe the modalities and categories we propose for the study of religions in urban contexts and of the urban through the religious. Following this path, the article proposes that anthropology, due to its well established tradition of analysis both of religious and urban facts, is well positioned to propose new approaches and interpretative frames to keep together the religious dimension with other spheres in order to delineate an image of contemporary cities.

  4. Introduction

    DEFF Research Database (Denmark)

    Nosch, Marie-Louise Bech; Gillis, Carole

    2007-01-01

    The ntroduction contains a desctition of the conference event and of how during the conference a scientific need bacme evident: the need for an introdution to how to excavate archaeological textiles and how to proceed with the tranport, conservation and preservation of archaeological textiles....

  5. Introduction

    Directory of Open Access Journals (Sweden)

    Jana S. ROŠKER

    2016-02-01

    Full Text Available Spirituality plays a significant role in shaping the cohesion of communities, their values, and their structures across the globe. Various religious practices and ideational systems are particularly complex in Asia. Home to some of the world major spiritual traditions such as Hinduism and Buddhism, Daoism and Confucianism, as well as to a relevant number of practicing Christians, Muslims, and self-identified atheists and agnostics, Asia provides us with an intense and extraordinarily rich tapestry of different religious and spiritual practices...

  6. Introduction.

    Science.gov (United States)

    Dumas, Wayne

    1987-01-01

    Introduces the articles in this special issue on social studies. Articles concern political socialization, economics, geography, a global perspective on social studies, ethnic studies, social change, thinking skills for citizenship training, and the integration of writing skills and social studies. (RH)

  7. Introduction

    CSIR Research Space (South Africa)

    Mambo, Julia

    2017-12-01

    Full Text Available Risk and Vulnerability Atlas was conceived by the DST in 2008 as a flagship programme under the ‘Global Change Grand Challenge‘, which falls under one of the themes of the ‘Innovation Towards a Knowledge Economy’ plan. One of the themes.... The SARVA falls within this theme and was designed to ensure that existing knowledge on global change risks and vulnerability is made available for those who could benefit from its use. Three products have since been developed under the SARVA: the online...

  8. Introduction

    OpenAIRE

    2014-01-01

    Every year, an estimated 25,000 to 50,000 species go extinct on the Earth owing to changes caused by human activity. Many international organisations including the World Conservation Union (IUCN) consider biological invasions to be the second most important cause of biodiversity loss worldwide, coming just after habitat destruction. On small islands, where biodiversity is both exceptionally original and exceptionally vulnerable, it is the main cause of species extinction. The New Caledonian a...

  9. Introduction

    DEFF Research Database (Denmark)

    Hahonou, Eric Komlavi; Lecocq, Baz

    2015-01-01

    This special issue examines the impacts and legacies of the slave trade, domestic slavery, and slave emancipation on social, political, and culturally constructed inequalities in Africa from the late nineteenth to the early twenty-first century. Post-slavery usually refers to studies...... of the Americas and the Caribbean where slavery continued to have a deep impact on a variety of societies long after its legal abolition. Could this term be relevant to discuss the legacies of slavery on the African continent? American and African forms of slavery were certainly different and the translation...... of “post-slavery” from the American into the African context cannot be done uncritically. We address both the relevance of the notion of post-slavery as well as its limitations in African contexts through a number of empirically grounded contributions based on recent research.The terms post-slavery, post...

  10. Introduction

    NARCIS (Netherlands)

    Yackel, E.; Gravemeijer, K.P.E.; Yackel, E.; Gravemeijer, K.P.E.; Sfard, A.

    2011-01-01

    The last quarter of the twentieth century has seen fundamental shifts in educational theories. These shifts were initiated by the research of Fullan and Pomfret (1977), which revealed fundamental flaws in the curriculum-innovation model of "research, development, and diffusion," known as the RDD

  11. Introduction

    DEFF Research Database (Denmark)

    Jensen, Ole B.

    2015-01-01

    to social networks, personal identities, and our relationship to the built environment. The omnipresence of mobilities within everyday life, high politics, technology, and tourism (to mention but a few) all point to a key insight harnessed by the ‘mobilities turn’. Namely that mobilities is much more than......The world is on the move. This is a widespread understanding by many inhabitants of contemporary society across the Globe. But what does it actually mean? During over one decade the ‘mobilities turn’ within the social sciences have provided a new set of insights into the repercussions of mobilities...... of mobilities will be included alongside issues of power, social exclusion, consumption, surveillance and mobilities history, to mention some of the many themes covered by this reference work of the best previously published material. The focus is on the academic contributions to this understanding by primarily...

  12. Introduction

    DEFF Research Database (Denmark)

    Eamets, Raul; Humal, Katrin; Beblavý, Miroslav

    2017-01-01

    The balance of flexibility and security for labour market participants is a perennial challenge for policy-makers. In the late 1990s, the term ‘flexicurity’ seemed to offer a solution to this balancing act. Indeed, in the first decade of this century, ‘flexicurity’ became a dominant theme...... to further expose the uneven security afforded to different labour market groups. Young people tend to accumulate negative flexibility outcomes in that they have more limited contractual security, and a greater risk of working on non-standard contracts and of losing their jobs more quickly than...... the comparable adult population. At the same time, young people also have less job and income security because of their lower seniority and more limited employment histories. Furthermore, in most European countries, workers on non-standard contracts have more limited access to unemployment benefits than workers...

  13. Introduction

    OpenAIRE

    Day Sclater, S; Cook, R; Kaganas, F

    2003-01-01

    This is the post print version of the chapter - Copyright @ 2003 The editors This book is about surrogacy and, more specifically, surrogate motherhood. It is a collection of essays that aims to provide a contemporary and international picture of a practice, traceable to ancient times, devised to solve the problem of childlessness. The collection, which explores surrogacy from a variety of perspectives including law, policy, medicine and psychology, is timely. For although there is nothing ...

  14. Introduction

    NARCIS (Netherlands)

    Helming, K.; Pérez-Soba, M.; Tabbush, P.

    2008-01-01

    Land use is a key human activity, which, through the exploitation of natural resources, fosters socio-economic development and alters structures and processes in the environment. At the European level, the Sustainable Development Strategy stresses the need for real integration of economic,

  15. Introduction

    Directory of Open Access Journals (Sweden)

    César González Ochoa

    2015-06-01

    Full Text Available La unam y la uba, Universidad de Buenos Aires, han estado ligadas por varias razones desde hace mucho tiempo; su historia, sus problemas, sus logros han sido paralelos; han tenido un continuo intercambio, sobre todo de profesores, aunque tal vez la unam ha sido más favorecida en este aspecto. La necesidad de iniciar esta presentación de Acta Poetica con esas alusiones a las dos universidades obedece a que este número es un esfuerzo conjunto de investigadores de ambas casas de estudio. Antes de hablar de los artículos que se publican, quisiéramos hacer un breve recorrido histórico de la uba para observar la similaridad con el camino que ha seguido nuestra universidad.

  16. Introduction

    International Nuclear Information System (INIS)

    2002-01-01

    In the book the radiation defects formation computerized simulation in solids at irradiation by different charged particles, and cascade probabilistic functions simulation peculiarities on a computer and radiation defects for ions and other particles and determination of relation between these functions with the Markov's processes are considered. It is shown, that processes of particles passing thought substance one can to considering as continuous by time Markov's processes and discrete one by collisions number. Finite expressions for the cascade probabilistic function, secondary particles N, defects concentrations C are presented in the form of sums, integrals and products of suitable arbitrary possibilities and norm coefficients depending on particles' type and energy, reaction channels, differential and integral interaction cross sections, energy losses, elementary act parameters, medium density, etc

  17. Introduction

    Science.gov (United States)

    Warwick, Peter D.; Hook, Robert W.; SanFilipo, John R.; Warwick, Peter D.; Karlsen, Alexander K.; Merrill, Matthew D.; Valentine, Brett J.

    2011-01-01

    The National Coal Resource Assessment (NCRA) team of the U.S. Geological Survey (USGS) has assessed the quantity and quality of coal beds and zones that could be mined during the next 20 years or more. Geologic, geochemical, and resource information was collected and compiled for the five major coal-producing regions of the United States: the Appalachian Basin, Illinois Basin, Northern Rocky Mountains and Great Plains, Colorado Plateau, and the Gulf of Mexico Coastal Plain, (Gulf Coast) (Figure 1). In particular, the NCRA assessed coal-quality information and characterized environmentally significant trace elements, such as arsenic and mercury, that are defined in and administered by 1990 Clean Air Act Amendments (U.S. Environmental Protection Agency, 1990). The results of various USGS coal assessment efforts may be found at: http://energy.cr.usgs.gov/coal/coal_assessments/index.html, and a summary of the results from all assessment areas can be found in Ruppert et al. (2002) and Dennen (2009).

  18. Introduction

    Directory of Open Access Journals (Sweden)

    Hamit Bozarslan

    2011-11-01

    Full Text Available Peut-on parler de l’Irak avec la distance critique consistant à taire sa colère de citoyen par rapport à l’horreur d’aujourd’hui et celle d’hier ? Celle d’aujourd’hui, car comment ne pas constater qu’à un embargo de plus de dix ans et à une occupation autant arrogante qu’imprudente fait désormais suite une violence multiforme détruisant la société irakienne dans ses fondements mêmes ? Et celle d’hier, car comment ne pas se souvenir que le régime renversé laissa derrière lui un pays dévasté pa...

  19. Introduction

    Directory of Open Access Journals (Sweden)

    Siobhan O'Donnell

    2017-01-01

    Full Text Available C'est avec plaisir que nous vous présentons le second de nos deux numéros spéciaux sur les troubles de l'humeur et d'anxiété, fondés sur les résultats de l'Enquête sur les personnes ayant une maladie chronique au Canada − Composante des troubles de l'humeur et d'anxiété (EPMCC-THA. Le premier numéro, publié en décembre 2016, contenait trois articles brossant un portrait des adultes canadiens ayant déclaré avoir reçu un diagnostic de troubles de l'humeur ou d'anxiété, à savoir leurs caractéristiques sociodémographiques, leur état de santé, les limitations dans leurs activités ainsi que leur degré d'invalidité et enfin les facteurs associés à leur bien-être. Les trois articles publiés ici portent quant à eux sur des thèmes liés à la prise en charge de ces troubles. Globalement, ces articles explorent les facteurs sociodémographiques clés dont on sait qu'ils ont un impact sur les résultats de santé, et ils traitent également des stratégies visant à favoriser la guérison et le mieux-être des adultes canadiens ayant déclaré avoir reçu un diagnostic de troubles de l'humeur ou d'anxiété.

  20. Introduction

    DEFF Research Database (Denmark)

    Thorhauge, Anne Mette; Sandvik, Kjetil; Andersen, Tem Frank

    2016-01-01

    The emergence of the Internet and digital technologies has brought about a massive proliferation of communication services and platforms since the mid-1990s ( Helles, 2013), turning communication across media into a key perspective in media research. Much of this research has had its focus on media...... institutions and their communication strategies (Davidson, 2010; Erdal, 2009) and media environments (Madianou & Miller, 2012), whereas cross-media communication as a user strategy has received relatively less attention. For this reason, the focus of this issue of MedieKultur will be on the user perspective...