931 resultados para high value-added compounds


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Na legislação atual os bens de domínio público do Património Histórico, Cultural e Ambiental devem ser contabilizados, no entanto, dadas as suas caraterísticas, existem dificuldades na sua avaliação, sobretudo quando se trata de bens que não foram construídos pelo homem, de que são exemplos os bens dominiais, como o espaço aéreo, os rios, o mar – Património Natural – ou os bens sem caraterísticas físicas – Património Cultural. Este trabalho pretende, como principal objetivo, propor uma metodologia de avaliação dos bens intangíveis, nomeadamente, os de cariz cultural e ambiental, porque são fatores que criam valor económico, contribuindo para o rendimento do município e, consequentemente, do país através das receitas de turismo geradas. Para tal, foram identificados os recursos intangíveis do concelho de Miranda do Douro com maior atratividade, recorrendo à aplicação de um inquérito por questionário aos seus visitantes. No sentido de dar resposta ao objetivo do estudo propôs-se uma metodologia de avaliação, tendo por base o valor económico acrescentado, mais conhecido por modelo Economic Value Added (EVA), pois é conhecido como o modelo que melhor avalia a criação de riqueza. Os resultados permitem concluir que são a Natureza e a Cultura os bens intangíveis que mais criam valor para o Município, resultado apurado através da aplicação de um inquérito por questionário aos visitantes de um evento de cariz cultural – A Feira de Gastronomia e Artesanato. Após a sua identificação, foi estimado o valor destes bens intangíveis, pelo método EVA, usando como proxies para o valor do capital investido, as despesas de investimento em cultura e para a rendibilidade do capital investido, as receitas da Hotelaria e da Restauração e das Atividades Recreativas.

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It is now widely accepted that there are two routes to open access (OA): OA repositories and OA journals. It is often assumed these are distinct alternative parallel tracks. However, it has recently become clear that there is potential for repositories and journals to interact with each other on an ongoing basis and between them to form a coherent OA scholarly communication system. This paper puts forward three possible models of interaction between repositories and journals; services such as arXiv and PubMed Central, and the work carried out by the RIOJA project, are working exemplars and pilot implementations of these models. The key issues associated with the widespread adoption of these models include repository infrastructure development; changing ideas of the ‘journal’, ‘article’, and ‘publication’; version management; quality assurance; business and funding models; developing value-added features; content preservation; policy frameworks; and changing roles and cultures within the research community.

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El presente trabajo de investigación lleva como título “CONTROL DE DEVOLUCIÓN DE IVA A PERSONAS DE LA TERCERA EDAD”, el cual realiza un análisis minucioso del proceso de devolución del Impuesto al Valor Agregado en la actualidad, y la manera en la que es factible mejorarlo. Lo que podemos observar en el desarrollo del presente trabajo de investigación, haciendo hincapié a como las personas de la Tercera Edad hacen uso de sus derechos, cual es el impacto que causa la devolución del IVA dentro de las Arcas Fiscales. El capítulo uno se enfoca principalmente a los aspectos generales de los Impuestos, como es: conceptos, elementos del impuesto, fines y efectos, clasificación y la trascendencia que ha tenido los impuestos desde la época colonial hasta la actualidad. El capítulo dos se orienta más a la entidad reguladora de los Impuestos en el Ecuador, el SRI, como es su misión, visión, facultades, objetivos, así como el detalle completo de la información necesaria acerca del Impuesto al Valor Agregado. En el capítulo tres encontraremos el análisis poblacional emitido por la INEC para el año 2015, dividido en sectores (Edades, Sexo, Provincia), el detalle completo del proceso de devolución de IVA para las personas de la Tercera Edad. Para concluir con el estudio, en el capítulo cuatro hacemos mención de las conclusiones y recomendaciones para el mejoramiento del proceso de devolución de IVA de las personas de la Tercera Edad.

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This dissertation consists of two essays which investigate how assuming the role of a seller or a buyer affects valuations in a price elicitation task (essay I) and how different presentations of an equivalent price affect evaluations when a consumer plays the dual roles of a buyer and a seller in transactions involving trade-ins (essay II). Sellers’ willingness to accept (WTA) to give up a good is typically higher than buyers' willingness to pay (WTP) to obtain the good. Essay I proposes that valuation processes of sellers and buyers are guided by a motivational orientation of “getting the best.” For a seller (buyer) indicating WTA (WTP), getting the best implies receiving as much as possible to give up a specific good (giving up as little as possible to get the specific good). Results of six studies suggest that the WTA-WTP elicitation task activates different directional goals, leading to the WTA-WTP disparity. The different directional goals lead sellers and buyers to focus on different aspects and bias their cognitive reasoning and interpretation of information. By connecting the valuation process to the general motivation of getting the best, this research provides a unifying framework to explain the disparate interpretations of the WTA-WTP disparity. Many new purchases and replacement decisions involve consumers’ trading in their old products. In such transactions, the overall exchange may be priced either as separate transactions (partitioned) with price tags for the payment and the receipt or as a single net price (consolidated) which takes into account the value of the trade-in. Essay II examines whether consumers prefer a partitioned price versus a consolidated price presentation. The findings suggest that when consumers are trading in a product which has a low value relative to the price of a new product, they prefer a consolidated price. In contrast, when trading in a product which has high value, they prefer a partitioned price. The results suggest that consumers use the price of the new product as an anchor to evaluate the trade-in value, and the perception of the trade-in value influences the overall evaluation especially when the transaction is partitioned.

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Part 15: Performance Management Frameworks

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The mesoporous molecular sieves of MCM-41 and AlMCM-41 type are considered as promising support for metal in the refining processes of petroleum-based materials as catalysts and adsorbents for environmental protection. In this work the molecular sieves MCM-41 and AlMCM-41 were synthesized by replacing the source of silica conventionally used, for quartz, an alternative and abundant, and the use of waste from the production of diatomaceous earth, an aluminum-silicate, as a source aluminum, due to abundant reserves of diatomaceous earth in the state of Rio Grande do Norte in the city of Ceará-Mirim, with the objective of producing high-value materials that have similar characteristics to traditional commercial catalysts in the market. These materials were synthesized by the method of hydrothermal synthesis at 100 º C for 7 days and subjected to calcination at 500 º C for 2 hours under flow of nitrogen and air. The molecular sieves were characterized by X-ray diffraction (XRD), differential thermal analysis (DTA) and thermogravimetric analysis (TG), adsorption of N2 (BET and BJH methods), spectroscopy in the infra red (FTIR), microscopy scanning electron (SEM) and transmission electron microscopy (TEM). The analysis indicated that the synthesized materials showed characteristic hexagonal structure of mesopores materials with high specific surface area and sort and narrow distribution of size of pores

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Em plena quarta revolução industrial, todas as industrias se estão a transformar para se ajustar aos novos paradigmas de relação com os clientes, altamente influenciados pelos pioneiros digitais como a Uber, Netflix ou Amazon, porém no setor financeiro há desafios acrescidos, pois os clientes esperam juntar essas expectativas digitais com a manutenção da iteração humana, enquanto, do lados bancos, em simultâneo, necessitam de recuperar da crise da dívida soberana que impôs necessidades de ajustamento dos balanços. O momento de desenvolvimento tecnológico potenciado pelo forte crescimento do acesso à internet em mobilidade traz novos hábitos e expectativas na relação com as entidades, com dispositivos cada vez mais potentes a cada vez menor custo, o que criou a oportunidade perfeita para o surgimento de startups tecnológicas dispostas a transformar os modelos de negócio de intermediação clássica, dando origem, no setor financeiro, às fintechs – empresas de base tecnológica dedicadas à prestação de serviços financeiros - impondo uma disrupção na industria financeira, com destaque para mercados como os EUA e Reino Unido. Olhando aos últimos cinco anos do setor financeiro, será muito difícil antecipar como estará o setor financeiro dentro de cinco anos, mas sabemos que estará seguramente muito diferente do que conhecemos hoje, por esse fato este trabalho é assente essencialmente em referências bibliográficas dos últimos 5 anos, tendo sido feito utilizados estudos de investigação de empresas e documentos académicos para a caracterização do setor neste contexto de inovação permanente e em que medida este processo de “digitalização” do setor financeiro influencia a propensão dos clientes na contratação de mais produtos e serviços, sendo esse um fator central para os bancos em Portugal recuperarem economicamente. É também analisada a dimensão seguida pelas instituições de regulação e supervisão do setor financeiro com vista a potenciar a concorrência e inovação do setor financeiro, enquanto mantém a garantia de segurança, confiança e controlo de risco sistémico. É bastante escassa a literatura disponível para caracterizar a banca em Portugal numa ótica de inovação e transformação, porém este trabalho procura caracterizar o sistema financeiro português face à forma como está a responder aos desafios de transformação tecnológica e digital. Procurou-se estabelecer uma metodologia de investigação que permita caracterizar a perceção de valor acrescentado para os clientes da utilização de serviços digitais e em que medida estes se podem substituir aos balcões e à intervenção humana dos profissionais dos bancos, tendo-se concluído que estes dois elementos são ainda fatores centrais para os clientes.

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Este documento expone la importancia del ejercicio de valoración como herramienta para la construcción de las proyecciones y la planeación financiera de una empresa en etapa temprana, al tiempo que prueba el método de flujos de caja con tasa de descuento ajustada al riesgo, como la metodología más recomendada por expertos, en la valoración de nuevas empresas (startups), y valida la marginalidad de la información contable y financiera entre los emprendedores -- Busca soportar en un único documento, las decisiones de inversión de financieros, prestamistas y emprendedores, en atención a la subjetividad con que muchos inversionistas valoran desde su percepción, el potencial de crecimiento, la generación de flujos futuros y/o el posicionamiento estratégico de las startup -- Como ya se mencionó, el método de Descuento de Flujos de Caja (DFC) será la metodología aplicada y analizada -- Entre otras ventajas, porque al estar basado en la generación de flujos a partir de los activos fijos, no se expone a percepciones del mercado ni a criterios no trasladables, en caso de una valoración por comparables -- El lector podrá constatar, y de acuerdo con la bibliografía consultada, que la metodología de DFC, no sólo es la más apropiada para la valoración de una startup, sino que dadas las circunstancias en cuanto a disponibilidad de la información, es obligatorio clasificarla, dentro de los métodos más sofisticados -- Finalmente, entre otras conclusiones, se hace énfasis en que el ejercicio de la valoración debe centrarse en identificar el potencial que tiene la empresa de convertirse en una entidad generadora de valor -- En tal sentido, el análisis se debe focalizar en el plan estratégico, que se espera desarrollar a corto, mediano y largo plazo, y en las acciones para alcanzar las metas planteadas -- No siempre la situación de la empresa ha de estar acorde con lo proyectado, se pueden presentar variaciones en el comportamiento financiero, adicionalmente, la demanda de capital líquido e inversiones en activos generan, en la mayoría de los casos, déficit en los flujos de caja producto de las dificultades de los emprendedores para garantizar dicha demanda de recursos

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India’s success story in services is well documented at the national level, but similar literature does not exist for India’s states. In this paper, we bridge this gap in research by looking at India’s services growth at the sub-national level and in doing so, also challenge existing literature by arguing that this growth has positive implications for income distribution. The first interesting finding is that even as per capita income is not converging across India’s states, per capita services are and we provide evidence for this both in terms of traditional measures of sigma- and beta-convergence and more recent panel unit root tests. Secondly, not only is external demand an important determinant of services value added at the state level, but this demand also emanates from all over the country rather than being concentrated in the neighbouring or richer states. This suggests that the benefits from services growth are being distributed more widely than may be perceived.

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Dissertação de Mestrado, Finanças Empresariais, Faculdade de Economia, Universidade do Algarve, 2016

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Tese de Doutoramento, Ciências Agrárias, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2015

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Paper prepared by Marion Panizzon and Charlotte Sieber-Gasser for the International Conference on the Political Economy of Liberalising Trade in Services, Hebrew University of Jerusalem, 14-15 June 2010 Recent literature has shed light on the economic potential of cross-border networks. These networks, consisting of expatriates and their acquaintances from abroad and at home, provide the basis for the creation of cross-border value added chains and therewith the means for turning brain drain into brain circulation. Both aspects are potentially valuable for economic growth in the developing world. Unilateral co-development policies operating through co-funding of expatriate business ventures, but also bilateral agreements liberalising circular migration for a limited set of per-sons testify to the increasing awareness of governments about the potential, which expatriate networks hold for economic growth in developing countries. Whereas such punctual efforts are valuable, viewed from a long term perspective, these top-down, government mandated Diaspora stimulation programs, will not replace, this paper argues, the market-driven liberalisation of infrastructure and other services in developing countries. Nor will they carry, in the case of circular labour migration, the political momentum to liberalise labour market admission for those non-nationals, who will eventually emerge as the future transnational entrepreneurs. It will take a combination of mode 4 and infrastructure services openings-cum regulation for countries at both sides of the spectrum to provide the basis and precondition for transnational business and entrepreneurial networks to emerge and translate into cross-border, value added production chains. Two key issues are of particular relevance in this context: (i) the services sector, especially in infrastructure, tends to suffer from inefficiencies, particularly in developing countries, and (ii) labour migration, a highly complex issue, still faces disproportionately rigid barriers despite well-documented global welfare gains. Both are hindrances for emerging markets to fully take advantage of the potential of these cross-border networks. Adapting the legal framework for enhancing the regulatory and institutional frameworks for services trade, especially in infrastructure services sectors (ISS) and labour migration could provide the incentives necessary for brain circulation and strengthen cross-border value added chains by lowering transaction costs. This paper analyses the shortfalls of the global legal framework – the shallow status quo of GATS commitments in ISS and mode 4 particular – in relation to stimulating brain circulation and the creation of cross-border value added chains in emerging markets. It highlights the necessity of adapting the legal framework, both on the global and the regional level, to stimulate broader and wider market access in the four key ISS sectors (telecommunications, transport, professional and financial services) in developing countries, as domestic supply capacity, global competitiveness and economic diversification in ISS sectors are necessary for mobilising expatriate re-turns, both physical and virtual. The paper argues that industrialised, labour receiving countries need to offer mode 4 market access to wider categories of persons, especially to students, graduate trainees and young professionals from abroad. Further-more, free trade in semi-finished products and mode 4 market access are crucial for the creation of cross-border value added chains across the developing world. Finally, the paper discusses on the basis of a case study on Jordan why the key features of trade agreements, which promote circular migration and the creation of cross-border value added chains, consist of trade liberalisation in services and liberal migration policies.

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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Programa de Pós-Graduação em Ciências da Saúde, 2015.

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The gas migration during the cementing of wells is one of the main problems of oil wells engineering. Its occurrence can cause severe problems since shortly to loss of control of the well after cementation. Recently, 20/04/2010 In an accident of major proportions in the Gulf of Mexico, among other factors, faulty cementing operation provided the gas migration, causing the accident, in which 11 people died and 17 were injured occurred. Besides the serious consequences that can be caused by gas migration, remediation of the problem, which is made by injecting cement in damaged areas, usually involves additional costs and is not always effective. Therefore, preventing gas migration to be preferred. Some methods are used to prevent the migration of the pressurized gas as the annular space, application of pressure pulses, reducing the height of the cement column compressible cement pastes of low permeability, pastes and to control free filtered water, and binders of thixotropic cement expandable and flexible. Thus, the cement pastes used to prevent gas migration must meet the maximum these methods. Thus, this study aimed to formulate a cement paste to prevent gas migration, using the expanded vermiculite, and evaluate the behavior of the folder trials necessary for use in oil wells. Free water content, rheological properties, compressive strength, loss of liquid phase sedimentation of solids, specific weight, thickening time and gas migration: The following tests were performed. The results show that meets the specifications paste formulated for use in oil wells and the use of expanded vermiculite contribute to the absorption of free water, thixotropy and low density. The absorption of free water is proven to result in zero percentage test free water content, thixotropy is observed with the high value of the initial gel strength (Gi) in testing rheological properties and low density is proven in test weight specific

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El Hidrógeno producido a partir de la biomasa procedente de los residuos de la planta de banano es considerado como un combustible altamente eficiente. Uno de los métodos más limpios para su obtención es la gasificación catalítica en agua en condiciones supercríticas, en donde se transforman los polisacáridos constitutivos de la biomasa (celulosa, hemicelulosa y lignina) en productos gaseosos de elevado valor. En el desarrollo de la reacción de gasificación es importante el diseño de un reactor de forma que este proporcione el hidrógeno de manera segura y respetuosa con el medio ambiente. De los elementos que determinan el diseño de un reactor, en este artículo se estudiaron la cinética intrínseca y el balance de materia. En la cinetica de la reacción se tomó como compuesto modelo de la biomasa a la glucosa, por ser el grupo estructural representante de la celulosa. Se develaron las diferentes reacciones intermedias que influyen en el rendimiento a hidrógeno. Posteriormente, se plante´o la ecuación de balance diferencial para la glucosa, modelo matemático que fue resuelto mediante Fortran 95 aplicando el algoritmo numérico de Thomas. Los resultados obtenidos revelaron que a fracciones másicas más bajas de glucosa los niveles de conversión son más elevados.