949 resultados para Six, Willem, 1829-1908
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Self- and cross-velocity correlation functions and related transport coefficients of molten salts are studied by molecular-dynamics simulation. Six representative systems are considered, i.e., NaCl and KCl alkali halides, CuCl and CuBr noble-metal halides, and SrCl2 and ZnCl2 divalent metal-ion halides. Computer simulation results are compared with experimental self-diffusion coefficients and electrical conductivities. Special attention is paid to dynamic cross correlations and their dependence on the Coulomb interactions as well as on the size and mass differences between anions and cations.
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The age and growth, length – weight relationship and relative condition factor of Gerres filamentosus (Cuvier, 1829) from Kodungallur, Azhikode Estuary were studied by examination of 396 specimens collected between May 2008 to October 2008. Here, length frequency method was used to study age and growth in fishes. L∞, K and t 0 obtained from seasonal and non - seasonal growth curves. Gerres filamentosus showed a low mortality rate (Z) 3.702 y-1. G. filamentosus has moderately low K value and long life span. The relation between the total length and weight of G. filamentosus was described as Log W = 1.321+2.5868 log L for males, Log W = 1.467 + 2.7227 log L for females and Log W = 1.481 + 2.7316 log L for sexes combined. The mean relative condition factor (Kn) values ranged from 0.9 to 1.14 for males, 0.89 to 1.11 for females and 0.73 to 1.08 for sexes combined. The length weight relationship and relative condition factor showed that the wellbeing of G. filamentosus were good. The morphometric measurements of various body parts were recorded. The morphometric measurements were found to be nonlinear and there is no significant difference observed between the two sexes.
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In this work, we present a generic formula for the polynomial solution families of the well-known differential equation of hypergeometric type s(x)y"n(x) + t(x)y'n(x) - lnyn(x) = 0 and show that all the three classical orthogonal polynomial families as well as three finite orthogonal polynomial families, extracted from this equation, can be identified as special cases of this derived polynomial sequence. Some general properties of this sequence are also given.
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Enterprise Modeling (EM) is currently in operation either as a technique to represent and understand the structure and behavior of the enterprise, or as a technique to analyze business processes, and in many cases as support technique for business process reengineering. However, EM architectures and methods for Enterprise Engineering can also used to support new management techniques like SIX SIGMA, because these new techniques need a clear, transparent and integrated definition and description of the business activities of the enterprise to be able to build up, optimize and operate an successful enterprise. The main goal of SIX SIGMA is to optimize the performance of processes. A still open question is: "What are the adequate Quality criteria and methods to ensure such performance? What must we do to get Quality governance?" This paper describes a method including an Enterprise Engineering method and SIX SIGMA strategy to reach Quality Governance
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Enterprise Modeling (EM) is currently in operation either as a technique to represent and understand the structure and behavior of the enterprise, or as a technique to analyze business processes, and in many cases as support technique for business process reengineering. However, EM architectures and methodes for Enterprise Engineering can also used to support new management techniques like SIX SIGMA, because these new techniques need a clear, transparent and integrated definition and description of the business activities of the enterprise to be able to build up, to optimize and to operate an successful enterprise.
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Since July 2010, all pre-packed organic food produced in the European Union (EU) must carry the new mandatory EU logo for organic food. Voluntary organic labels (such as national governmental logos and logos of private farmers’ associations and control bodies) can still be used, but only in addition to the mandatory EU logo. This change in the regulatory environment of organic labelling raises a number of questions regarding consumer preferences for different kinds of organic certification logos, which the present dissertation addressed. The first objective was to explore and analyse consumer perceptions, attitudes, preferences and willingness-to-pay (WTP) regarding different voluntary organic labels. The second objective was to investigate consumer perceptions and attitudes towards a mandatory EU logo. A combination of qualitative and quantitative methods of consumer research in six European countries was employed including focus group discussions, choice experiments and structured interviews. Based on the empirical results, recommendations are drawn for different actors in the organic sector.
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Six Degrees: The New Science of Networks (Sociology, W3233, Spring 2006) Original URL: http://cdg.columbia.edu/cdg/courses/spring06/sixDegrees/syllabus.jsp
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Resumen tomado de la revista
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Watch, discuss, reflect CONTENT: Six videos introducing ideas about learning and reflection
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The prevalence and genetic susceptibility of autoimmune diseases (ADs) may vary depending on latitudinal gradient and ethnicity. The aims of this study were to identify common human leukocyte antigen (HLA) class II alleles that contribute to susceptibility to six ADs in Latin Americans through a meta-analysis and to review additional clinical, immunological, and genetic characteristics of those ADs sharing HLA alleles. DRB1∗03:01 (OR: 4.04; 95%CI: 1.41–11.53) was found to be a risk factor for systemic lupus erythematosus (SLE), Sjogren’s syndrome (SS), and type 1 diabetes mellitus (T1D). DRB1 ¨ ∗04:05 (OR: 4.64; 95%CI: 2.14–10.05) influences autoimmune hepatitis (AIH), rheumatoid arthritis (RA), and T1D; DRB1∗04:01 (OR: 3.86; 95%CI: 2.32–6.42) is a susceptibility factor for RA and T1D. Opposite associations were found between multiple sclerosis (MS) and T1D. DQB1∗06:02 and DRB1∗15 alleles were risk factors for MS but protective factors for T1D. Likewise, DQB1∗06:03 allele was a risk factor for AIH but a protective one for T1D. Several common autoantibodies and clinical associations as well as additional shared genes have been reported in these ADs, which are reviewed herein. These results indicate that in Latin Americans ADs share major loci and immune characteristics.
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The aim of this study is to establish the time and period of development of Analogical Reasoning (AR) and evaluate its independence and performance with respect to the age. We performed a longitudinal cohort study of two age groups and six annual follow-up phases from each one (2000-2005, 2001-2006) in six to eleven years-old children in the city of Huanuco (Peru) with a sample of 167 children (first stage), and N=121 (sixth stage). The Raven’s progressive matrices test, coloured version, was applied individually without time limits. Results indicate that AR development occurs in a constant and late way from seven to eleven years-old children, and also that there is independence between the ability of AR and the children age. We discuss the importance of knowledge in the relationships between analogies topics, adjusted to the age, as a mediating factor in the development of AR.
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Este estudio de caso se centra en los esfuerzos de China por reanudar los Six Party Talks o Diálogos a Seis Bandas que son considerados como la opción más viable para tratar la situación nuclear en la península coreana.
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Demostrar la importancia de la aportación de los maestros públicos en la renovación pedagógica. Documentación histórica sobre el movimiento de renovación pedagógica en Girona a principios del siglo XX. Comienza con una breve introducción en la que sitúa los temas básicos del trabajo. La tesis se divide en tres partes. La primera intenta trazar brevemente los perfiles básicos de la época que estudia y pretende descubrir a los maestros y las escuelas de aquellos años. En la segunda parte define las líneas de actuación del Magisterio Gerundense, las decisivas opciones que decidieran de su acción pública y profesional, dentro y fuera de la escuela. Y la tercera parte se propone reseñar lo esencial de su actividad de renovación pedagógica y al mismo tiempo la compara con la acción renovadora que en aquellos mismos años se desarrollaba en varios países de Europa y América, y que constituye la base de los movimientos de Escuela Nueva. Una breve conclusión intenta recapitular las básicas aportaciones del magisterio público gerundense a la obra renovadora. Los maestros públicos tuvieron que defendense contra unos atacantes que les reprochaban, no sólo incompetencia e incapacidad educativa sino que además les acusaban de ser causa de grandes y graves peligros sociales. Aquellos maestros se defendieron con su obra. Afirmaron la institución escolar y además supieron renovarla. Aseguraron sus instrumentos asociativos de defensa profesional y supieron hacerlos también cauce de auto-exigencia y no únicamente de reivindicación salarial. Hoy en día se habla de una crisis escolar que provoca un aumento de la inseguridad en los profesionales, quizás se tendría que recoger el ejemplo de éstos si se quiere vencer estas situaciones que parecen igualmente críticas.
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Estudiar el alcance y la repercusión del presupuesto extraordinario de cultura del Ayuntamiento, de 1908. Describir la obra de la Comisión de Cultura del Ayuntamiento de Barcelona. El objeto de estudio es el presupuesto extraordinario de cultura, así como los documentos oficiales y periodísticos que con él se relacionan. El autor divide la investigación en tres bloques: en el primero de ellos, se realiza una introducción histórica general y una aproximación al marco educativo español y barcelonés de la época. En el segundo bloque analiza el presupuesto y la actitud de las personalidades y publicaciones favorables y contrarias al presupuesto, antes y después de la aprobación de éste y tras su suspensión. El tercer bloque analiza la obra escolar del Ayuntamiento de Barcelona entre los años 1889 y 1934. Análisis de textos. El presupuesto extraordinario estaba estrechamente relacionado con el fenómeno de 'Renaixença' que se daba en Cataluña durante la época. Existe un paralelismo entre los cambios políticos del momento y el afán de renovación pedagógica. Las principales novedades aportadas por el presupuesto a la realidad educativa de Barcelona fueron: uso de pedagogía activa, gratuidad de la enseñanza, coeducación experimental, neutralidad religiosa y profesorado selecto. El modelo educativo implícito en el presupuesto hace hincapié en los aspectos cualitativos de la enseñanza. El presupuesto fue fruto de la expresión de la mayoría del Consistorio barcelonés.