1000 resultados para resonant states
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We derive a universal model for atom pairs interacting with non-resonant light via the polarizability anisotropy, based on the long range properties of the scattering. The corresponding dynamics can be obtained using a nodal line technique to solve the asymptotic Schrödinger equation. It consists of imposing physical boundary conditions at long range and vanishing the wavefunction at a position separating the inner zone and the asymptotic region. We show that nodal lines which depend on the intensity of the non-resonant light can satisfactorily account for the effect of the polarizability at short range. The approach allows to determine the resonance structure, energy, width, channel mixing and hybridization even for narrow resonances.
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This working paper was originally printed in the Working Paper Series of the MIT International Motor Vehicle Program
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In January 1983 a group of US government, industry and university information specialists gathered at MIT to take stock of efforts to monitor, acquire, assess, and disseminate Japanese scientific and technical information (JSTI). It was agreed that these efforts were uncoordinated and poorly conceived, and that a clearer understanding of Japanese technical information systems and a clearer sense of its importance to end users was necessary. That meeting led to formal technology assessments, Congressinal hearings, and legislation; it also helped stimulate several private initiatives in JSTI provision. Four years later there exist better coordinated and better conceived JSTI programs in both the public and private sectors, but there remains much room for improvement. This paper will recount their development and assess future directions.
Vignettes and self-reported work disability in the United States: Correction of report heterogeneity
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Subjective measures of health tend to suffer from bias given by reporting heterogeneity. however, some methodologies are used to correct the bias in order to compare self-assessed health for respondents with different sociodemographic characteristics. One of the methods to correct this is the hierarchical ordered probit (hopit), which includes rates of vignettes -hypothetical individuals with a fixed health state- and where two assumptions have to be fulfilled, vignette equivalence and response consistency. this methodology is used for the self-reported work disability for a sample of the united states for 2011. The results show that even though sociodemographic variables influence rating scales, adjusting for this does not change their effect on work disability, which is only influenced by income. the inclusion of variables related with ethnicity or place of birth does not influence the true work disability. however, when only one of them is excluded, it becomes significant and affects the true level of work disability as well as income.
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El derecho internacional fue concebido como un derecho interestatal. Sin embargo, como consecuencia del desarrollo progresivo del derecho, nuevos actores y nuevos sujetos han ido surgiendo. El individuo es uno de ellos bajo diferentes perspectivas, bajo la perspectiva penal al asumir la responsabilidad de sus actos frente a los diferentes tribunales ad hoc y, ahora ante la Corte Penal Internacional. También se ha desarrollado la figura bajo la perspectiva de los derechos humanos. Este artículo analiza las formas como las políticas estatales relativas al derecho internacional se presentan a los individuos, a las personas jurídicas y a los demás actores.
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No publicada
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Sólidos, líquidos y gases son los tres estados de la materia y su estudio forma parte de la química. Este texto nos permite conocer cómo ésta se desarrolla no sólo en los laboratorios y entre científicos, sino también en fábricas y plantas químicas, y con múltiples aplicaciones: en la fabricación de fibras sintéticas para los tejidos, de explosivos para los fuegos artificiales, de disolventes para las pinturas, de fertilizantes para los cultivos y de medicamentos para tratar las enfermedades.
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Cumple con los requisitos para la especificación OCR AS de Historia, opción A. Su contenido estudia los límites de la Europa medieval, en la víspera de la Primera Cruzada, y explica las razones para su organización y los motivos de su éxito, la creación y desarrollo del reino de los cruzados entre 1100 y 1130, así como su transformación en un estado militar; también, analiza el impacto de la Segunda Cruzada, los cambios en el mundo musulmán como respuesta al reino cristiano de los cruzados y el fracaso de la Tercera Cruzada. Cada capítulo contiene actividades para ayudar a la comprensión del tema y desarrollar habilidades con la historia, análisis de acontecimientos relevantes, debates y controversias, breves biografías de personajes clave de la época y definiciones de palabras nuevas.
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Monográfico con el título: 'Sociedad de la Información, lenguas minoritarias y educación en bilingüismo'. Resumen basado en el de la publicación
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We report here a new empirical density functional that is constructed based on the performance of OPBE and PBE for spin states and SN 2 reaction barriers and how these are affected by different regions of the reduced gradient expansion. In a previous study [Swart, Sol̀, and Bickelhaupt, J. Comput. Methods Sci. Eng. 9, 69 (2009)] we already reported how, by switching between OPBE and PBE, one could obtain both the good performance of OPBE for spin states and reaction barriers and that of PBE for weak interactions within one and the same (SSB-sw) functional. Here we fine tuned this functional and include a portion of the KT functional and Grimme's dispersion correction to account for π- π stacking. Our new SSB-D functional is found to be a clear improvement and functions very well for biological applications (hydrogen bonding, π -π stacking, spin-state splittings, accuracy of geometries, reaction barriers)
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Public Assistance to the poor in the United States was always been reluctant and especially cruel to women. A society that from the outset prized Kantian principles of individual freedom over Rousseau’s notions of social contract and that was dominated by a puritanical morality saw poverty as self-made. If individuals had freedom of choice, bad outcomes were necessarily caused by bad choices. The poor had themselves to blame.