Estudo de acoplamento de luz a sistemas multicamadas : plasmons de superfícies e guias de onda

O acoplamento de radiação óptica em sistemas multicamadas tem sido objeto de diversas pesquisas, não somente acadêmicas, mas também para aplicações industriais, tanto na área de sensores ópticos, como na de processadores ópticos e na de comunicações ópticas. Existe uma variedade de técnicas que são exploradas nestes estudos. Nesta tese, focalizamos nossa atenção no acoplamento de radiação laser ou mesmo de luz branca incoerente a um filme tipo multicamadas e estudamos os mecanismos físicos que governam as reflexões e as perdas por absorção nas multicamadas, efeitos que normalmente não parecem quando a incidência ocorre diretamente do ar para o filme. A técnica que exploramos é conhecida como reflexão interna total atenuada, ATR. A presença de um filme fino metálico permite o estudo experimental de plasmons de superfície e do acoplamento a modos guiados do sistema multicamadas. Além dos estudos experimentais, apresentamos um cálculo teórico iterativo para a refletividade dos filmes do tipo multicamadas para um número qualquer de camadas, que apresenta vantagens computacionais no ajuste dos dados experimentais ou em simulações. Esta contribuição não necessita as aproximações encontradas em um grande número de trabalhos que envolvem sistemas mais simples. Apresentamos também o cálculo do fluxo de energia dentro de cada camada individual do sistema, o que nos permite determinar o tipo de modo acoplado e a sua localização. O método foi aplicado a diversos sistemas, quando uma das camadas foi modificada. Estes estudos foram realizados como função do ângulo de incidência e do comprimento de onda da radiação incidente para uma variedade de sistemas multicamadas. Nossa simulação teórica se mostra bastante adequada e útil para a projeção de sistemas multicamadas complexos com camadas metálicas e dielétricas para sensores óticos.

Síndrome de Burnout : um estudo com guias de turismo regional em Natal-RN

Burnout is a psychological syndrome triggered in response to continuous exposure to interpersonal stressors. It is considered a multifactorial construct, which is commonly characterized by three dimensions: emotional exhaustion, dehumanization, and lack of personal accomplishment.This study aimed to verify if the three characteristics of burnout (exhaustion, lack of dehumanization and personal accomplishment) are present in people working as guides Tourism in Natal - RN. It is a descriptive and quantitative study. 109 subjects were surveyed. Data collection was done through the use of questionnaires, the instrument used was the characterization of the Burnout Scale (ECB) created and validated in Brazil by Trocoli and Tamayo (2000). In order to analyze data we used descriptive statistics, analysis of core measures, exploratory and confirmatory factor analysis, reliability analysis, cluster analysis, multiple discriminant and Spearman correlation. Factor analysis identified four factors that explain 58.3% of the total variance. Those factors were named exhaustion, deception, avoidance, and dehumanization. The reliability of the instrument, as measured by Cronbach's Alpha was 0.918, which is considered excellent reliability. The 109 subjects were grouped into three cluster, which had the deception, avoidance, and dehumanization as discriminant. It is possible to conclude that the characteristics of burnout syndrome are present in the studied population where 19 people are on the high level of burnout, moderate in 32 and 56 in the light. The correlations between socio-demographic variables studied and the dimensions of burnout, were few and weak. The variable leave for health reasons in the study appeared to be related to feelings of exhaustion and avoidance behavior appeared related to younger individuals and who work only in the activity of Receptive Tourism Guide. Verification of the incidence of burnout in individuals surveyed suggest the need to adopt intervention strategies are individual, organizational and / or combined

Turismo e pobreza: percepções dos guias de turismo, moradores e não moradores que trabalham na favela da Rocinha Rio de Janeiro

This project refers to a study somewhat controversial , as in focusing less recognized and valued hand, although the dynamics of tourism pass to take another view , you can not beforehand consider favorable or unfavorable . Analyzes the phenomenon related to conception or perception of poverty from tourism residents and non residents of the Favela of Rocinha in Rio de Janeiro tourist guides . It is a subject to an object of research somewhat controversial , but about which there is already an academic and scientific concern and deserves an investigator look. Fits as a qualitative study whose methodological procedure based on interviews and participant observation , and the geographic divisions chosen the Rocinha slum , for its expressiveness and for being a pioneer in this type of tourism , had to conducting fieldwork lasting six months, which was accompanied by at least four hours walking work of sixteen tour guides, eight residents and eight non- residents in the community, working for different travel agencies and tourism. End of each tour, all tour guides answered a semi-structured questionnaire, containing nineteen questions. Most respondents tour guides authorized record interview, which has made it possible to analyze the speech through spoken language. In tourism, foreign tourists are the main target, although rarely also count with the participation of domestic tourists. Notes that the relationship between poverty and slums, from the perceptions of tourist guides residents better reflects the reality of favela residents compared with non residents guides, since they fully know all the intricacies and better the difficulties they have endured and still go, when it comes to the issue of stigmatization respect, by which has suffered by Brazilian society, in relation to live in slums, and have your dwelling place as a tourist attraction. While presenting the social reality of Rocinha consistently during his work, the non residents guides worry about being as natural as possible with tourists as much as the locals show slum, in the same way they avoid authorize tourists to take compromising photos and that will expose the intimacy of community residents . Concludes that, while recognizing the importance of elevation to the rank of tourist attraction and its promising prospects, requires attention and priority, given the greater precariousness of the human condition in relation to the prime areas in which it operates tourism should be a vector of development, not a masking of reality

Estrategia regional de implementación para América Latina y el Caribe del Plan de Acción Internacional de Madrid sobre el Envejecimiento

En Estrategia regional de implementación para América Latina y el Caribe del Plan de Acción Internacional de Madrid sobre el Envejecimiento se plantean metas, objetivos y recomendaciones para la acción en favor de las personas mayores en cada una de las tres áreas prioritarias acordadas en Madrid. Representa un marco de referencia regional que los países deben adaptar a sus realidades nacionales con el fin de responder eficazmente a las necesidades e intereses de las personas mayores, propiciando la creación de condiciones que favorezcan un envejecimiento individual y colectivo con seguridad y dignidad. La publicación contiene un prólogo del Secretaria Ejecutivo de la CEPAL, señor Luis Machinea; los acuerdos adoptados en tres áreas prioritarias: Personas de Edad y Desarrollo, Salud y Bienestar en Envejecimiento, Entornos Propicios y Favorables; así como los mecanismos de Aplicación y Evaluación de la Estrategia; y un anexo con la representación de los Estados Miembros y otros países.

El Plan de Acción Internacional de Madrid sobre el Envejecimiento, 2002 y los textos regionales sobre el envejecimiento: estudio comparado

Incluye Bibliografía

Estrategia regional de implementación para América Latina y el Caribe del Plan de Acción Internacional de Madrid sobre el Envejecimiento

Incluye Bibliografía

Informe de la Conferencia Regional Intergubernamental sobre Envejecimiento: Hacia una Estrategia Regional de Implementación para América Latina y el Caribe del Plan de Acción Internacional de Madrid sobre el Envejecimiento

Incluye Documento de Referencia DDR/2 sólo para participantes, recibido en 2012 con el mismo símbolo

Report of the Regional Intergovernmental Conference on Ageing: Towards a Regional Strategy for the Implementation in Latin America and the Caribbean of the Madrid International Plan of Action on Ageing

Spanish version available at the Library

Report on the application of the regional strategy for the implementation in Latin America and the Caribbean of the Madrid International Plan of Action on Ageing

Includes bibliography

Informe sobre la aplicación de la estrategia regional de implementación para América Latina y el Caribe del Plan de Acción Internacional de madrid sobre el Envejecimiento

Incluye Bibliografía

Calidad de vida de personas mayores: instrumentos para el seguimiento de políticas y programas en el marco de la implementación regional del Plan de Acción Internacional de Envejecimiento, Madrid, 2002 (Bibliografía de curso)

Comprende los textos de apoyo a los diferentes módulos del curso.

Country report of Aruba on recent developments relating to the follow-up of the Madrid Plan of Action on Ageing and the regional strategy on ageing in occasion of the Caribbean Symposium on Population Ageing

Documento complementario a edición impresa ingresada en Biblioteca (101803)