862 resultados para Open


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Brazilian Portuguese needs a Wordnet that is open access, downloadable and changeable, so that it can be improved by the community interested in using it for knowledge representation and automated deduction. This kind of resource is also very valuable to linguists and computer scientists interested in extracting and representing knowledge obtained from texts. We discuss briefly the reasons for a Brazilian Portuguese Wordnet and the process we used to get a preliminary version of such a resource. Then we discuss possible steps to improving our preliminary version.

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From a financial perspective, this dissertation analyzes the Brazilian mutual fund industry performance for an average retail client. The most representative funds for the local population, that are the fixed income open-end ones, will be selected and their performance will be measured aiming to answer if clients of this industry obtained a proper return over their investments in the period between August 2010 and August 2013. A proper return will be understood as the preservation of the purchasing power of the individual´s savings, what is achieved with a positive performance of a mutual fund after discounting taxes, administrative fees and inflation. After obtaining an answer for the previous question, this dissertation will explore a possible alternative solution: Tesouro Direto, that is an example of a financial approach that could foster the disintermediation between savings and investments through electronic channels. New electronic platforms, with a broader scope, could be utilized to increase the efficiency of funding productive investments through better remunerating Brazilian savings. Tesouro Direto may point towards a new paradigm.

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Inovação tem se tornado um fenômeno cada vez mais complexo e dinâmico, com a mudança de um paradigma focado na inovação industrial, onde a inovação acontecia no produto ou no processo de fabricação, para outro baseado no conhecimento, muito mais amplo. Além disso, o conhecimento e a competência técnica não são mais considerados como um monopólio do departamento de pesquisa e desenvolvimento. Isto trouxe mudanças nas práticas de inovação, que se tornaram mais abertas e levaram as empresas a interagir cada vez mais com o seu ambiente. Por outro lado, a inovação tecnológica, cujo primeiro objetivo é de criar valor para a empresa, tem experimentado alguns limites para resolver problemas sociais, como o aquecimento global. As novas tecnologias têm a capacidade de melhorar a qualidade de vida de muita gente, mas não é suficiente. É nesse contexto que surge outro tipo de inovação, cujo objetivo é de maximizar o impacto positivo na sociedade: a inovação social. Estes dois paradigmas de inovação, mais adequados aos desafios atuais, têm alguns pontos em comum na sua integração com o ambiente externo: a sociedade e outros atores da inovação. No entanto, praticamente não existem estudos integrando inovação aberta e inovação social. Este trabalho estuda a integração destes dois modelos a partir de uma pesquisa exploratória, realizando entrevistas em profundidade com 11 dirigentes de organizações sociais. As iniciativas sociais parecem atrair mais organizações externas para colaborar do que empresas com fins lucrativos, já que são mais altruístas. Parecem integrar essas pessoas e procurar por mais ajuda, especialmente no momento de escalar o negócio. Ainda que algumas organizações têm como prioridade institucionalizar a inovação aberta, outras veem isto como secundário ou simplesmente não sabem como fazer. Isto resulta em uma colaboração mais informal, que não é focada em atividades de pesquisa e desenvolvimento, prática ausente nas empresas da nossa amostra.

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O objetivo desse estudo é discutir a estratégia de inovação aberta adotada pelas quarto maior companhias farmacêuticas norte-americanas nos último quarto anos. A inovação tem sido reconhecida como uma fonte essencial de vantagem competitiva de uma firma. A partir do momento em que empresas começam a expandir e interagir em escala global, sua estratégia de inovação começa a mudar, e adquire um aspecto mais integrado, intensificando seu relacionamento com atores externos e recursos. Essa mudança tem como objetivo reduzir o custo da inovação e aumentar sua eficiência, e tem impacto nos resultados da empresa. Essa pesquisa realiza uma pesquisa exploratória usando dois modelos de inovação aberta como referência, Lichtenthaler (2008) e Lazzarotti-Manzini-Pellegrini (2010). Entender como firmas aplicam estratégias de inovação aberta é o primeiro passo para avaliar seu impacto na estratégia geral da mesma na nova conjuntura internacional.

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This paper considers challenges of Human Resource Management (HRM) in Open Innovation processes. It examines which strategies managers used to overcome these problems in the case of the Brazilian Oil and Gas company Petrobras. By conducting an inductive case study it develops a contextual model based on the use of grounded theory. It argues that the most important categories were to overcome problems of (a) the interpersonal relationship, (b) power shifting inside the organization, and (c) making people more valuable to the organization and shows how managers tackled these challenges. It contributes with a deep analysis of HRM challenges in Open Innovation that is important for a better understanding of management problems that can come along with Open Innovation processes.

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This paper presents an overview of the Brazilian macroeconomy by analyzing the evolution of some specific time series. The presentation is made through a sequence of graphs. Several remarkable historical points and open questions come up in the data. These include, among others, the drop in output growth as of 1980, the clear shift from investments to government current expenditures which started in the beginning of the 80s, the notable way how money, prices and exchange rate correlate in an environment of permanently high inHation, the historical coexistence of high rates of growth and high rates of inHation, as well as the drastic increase of the velocity of circulation of money between the 70s and the mid-90s. It is also shown that, although net external liabilities have increased substantially in current dollars after the Real Plan, its ratio with respect to exports in 2004 is practically the same as the one existing in 1986; and that residents in Brazil, in average, owed two more months of their final income (GNP) to abroad between 1995-2004 than they did between 1990 and 1994. Variance decompositions show that money has been important to explain prices, but not output (GDP).

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This paper studies the role of Vertical Specialization-based trade and foreign damand push as elements capable of explaining export-led recoveries in small open industrialized economies. The empirical evidence on export-led recoveries is reviewed. Data supporting the growing importance of vertical specialization for international trade are presented. I compare the performance of two versions of a small open economy model, calibrated to mimic Canadian Business Cycles. The …rst one is based upon Schmitt-Grohe(1998). The second incorporates Vertical- Specialization-based trade. I show that an arti…cial economy featuring Vertical-Specializationbased trade in conjunction with an exogenous AR(2) process for foreign output displays improved impulse responses to a foreign output shock and is able to mimic the contribution of Canadian exports to output growth during economic recoveries.

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The development of robots has shown itself as a very complex interdisciplinary research field. The predominant procedure for these developments in the last decades is based on the assumption that each robot is a fully personalized project, with the direct embedding of hardware and software technologies in robot parts with no level of abstraction. Although this methodology has brought countless benefits to the robotics research, on the other hand, it has imposed major drawbacks: (i) the difficulty to reuse hardware and software parts in new robots or new versions; (ii) the difficulty to compare performance of different robots parts; and (iii) the difficulty to adapt development needs-in hardware and software levels-to local groups expertise. Large advances might be reached, for example, if physical parts of a robot could be reused in a different robot constructed with other technologies by other researcher or group. This paper proposes a framework for robots, TORP (The Open Robot Project), that aims to put forward a standardization in all dimensions (electrical, mechanical and computational) of a robot shared development model. This architecture is based on the dissociation between the robot and its parts, and between the robot parts and their technologies. In this paper, the first specification for a TORP family and the first humanoid robot constructed following the TORP specification set are presented, as well as the advances proposed for their improvement.

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This work demonstrates the usefulness of the Open Photoacoustic Cell Technique to study the effects of irradiance and temperature on photosynthesis. bl vivo and ill situ photosynthetic induction measurements were performed in three different species of eucalyptus plants (E. grandis, E. urophylla, and E, urograndis) previously dark-adapted at different temperatures. Photosynthetic activity curves were built as a function of light intensity, indicating the occurrence of photosynthesis saturation. E. urograndis presented higher photosynthetic activity than the other species, especially at low temperature, indicating its tolerance to stress conditions. The incidence of background saturation light of various intensities allowed the irt situ study of photoinhibition in eucalyptus plants through open photoacoustics. (C) 2001 MAIK Nauka/Interperiodica.

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In this work we study the photosynthetic induction in Eucalyptus urograndis leaves using the Open Photoacoustic Cell Technique. In vivo and in situ measurements were performed in leaves of four months-old E. urograndis seedlings and C041 cuttings previously dark-adapted for at least 10 h. Experimental results for the gas exchange component of the photoacoustic (PA) signal are interpreted considering that a gas uptake component would have a phase angle nearly opposite to that of the oxygen evolution component. Analysis of the photosynthetic induction data shows that seedlings present a net oxygen evolution before cuttings, but cuttings reach a higher steady-state photosynthetic activity.

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Photosynthetic induction in leaves of four-month-old Eucalyptus urograndis seedlings and of cuttings obtained from adult trees that were previously dark-adapted was studied by the in vivo and in situ Open Photoacoustic Cell Technique, Results for the gas exchange component of the photoacoustic (PA) signal were interpreted considering that the gas uptake component would have a phase angle nearly opposite to that of the oxygen evolution component. By subtracting the thermal component from the total PA signal, we studied the competition between gas uptake and oxygen evolution during the photosynthetic induction. Seedlings presented a net oxygen evolution prior to cuttings, but cuttings reached a higher steady-state photosynthetic activity. The chlorophyll (Chl) a/b ratio and the Chl fluorescence induction characteristic F-v/F-m were significantly higher for cuttings, while there was no difference between samples in stomata density and leaf thickness. Thus the differences in PA signals of seedlings and cuttings are associated to differences between the photosystem 2 antenna systems of these samples.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)