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Search Results: 1 - 10 of 22255 matches for " Horacio Nelson Hastenreiter Filho "
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Colabora??o nas atividades de pesquisa desenvolvimento e inova??o: o que nos ensina o Modelo de Centros e Redes de Excelência Petrobras / COPPE UFRJ?
Pires, Ana Maria de Britto;Teixeira, Francisco Lima Cruz;Hastenreiter Filho, Horacio Nelson;
Organiza??es & Sociedade , 2012, DOI: 10.1590/S1984-92302012000300008
Abstract: the complexity of the technological innovation process in knowledge intensive activities has led to the emergence of new collaborative arrangements and new business models to deal with research, development and innovation (rd) activities. this article presents an evaluation of the prática centros e redes de excelência petrobras/coppe (pcrex) in the light of the following research topics: triple helix, open innovation, university-industry relations and innovation networks. the pcrex model proposes the establishment of new permanent interorganizational agencies aimed at the development of specific knowledge areas. the study of the method is based on the case study of the petrobras center of excellence in geochemistry (cegeq), the prototype of the application of the method set up in 1996. the research revealed the fine alignment of the pcrex with the triple helix and the open innovation models of innovation, which confirms its high potential to leverage the innovation process. however, it also highlighted cegeq's difficulties to fully realize this potential. the case study identified the need to improve the capacity of engaging and coordinating networks and to advance in the development of an institutional environment which favors the practice of collaboration in the pcrex mode. the research also revealed that the adoption of the pcrex model for the management of rd activities is a strategic decision and therefore must the aligned with the corporate strategy.
Colabora o nas atividades de pesquisa desenvolvimento e inova o: o que nos ensina o modelo de centros e redes de excelência Petrobrás / Coppe UFRJ?
Ana Maria de Britto Pires,Francisco Lima Cruz Teixeira,Horacio Nelson Hastenreiter Filho
Organiza??es & Sociedade , 2012,
Abstract: A complexidade do processo de inova o tecnológica em atividades intensivas em conhecimento vem provocando o surgimento de novos arranjos colaborativos e novos modelos de negócio para as atividades de pesquisa, desenvolvimento e inova o (PD&I). Este artigo apresenta uma avalia o da Prática Centros e Redes de Excelência Petrobras/Coppe (PCREX) à luz dos referenciais teóricos da Hélice Tríplice, Inova o Aberta, Rela o Universidade-Empresa e Redes de Inova o. O modelo PCREX prop e a constru o de novos organismos interorganizacionais permanentes, voltados ao desenvolvimento de áreas específicas do conhecimento. A análise da PCREX é aprofundada pelo estudo de caso do Centro de Excelência em Geoquímica da Petrobras (Cegeq), protótipo da aplica o da PCREX, institucionalizado em 1996. A pesquisa revelou o total alinhamento da PCREX com as abordagens da Hélice Tríplice e da Inova o Aberta, o que confirma seu potencial dinamizador do processo de inova o; porém, apontou dificuldades na realiza o desse potencial no caso Cegeq. O estudo de caso evidenciou a necessidade de se avan ar no desenvolvimento da capacidade de atuar em redes de colabora o e na constru o de ambientes institucionais favoráveis ao exercício da colabora o nos moldes PCREX. A pesquisa revelou, ainda, que a ado o do modelo PCREX para a gest o das atividades de PD&I é uma decis o estratégica que precisa estar alinhada com a estratégia corporativa. ----- Collaboration on Research, Development and Innovation Activities: what can be learnt from the Petrobras/Coppe UFRJ model of Centers and Networks of Excellence? ----- ABSTRACT ----- The complexity of the technological innovation process in knowledge intensive activities has led to the emergence of new collaborative arrangements and new business models to deal with research, development and innovation (RD&I) activities. This article presents an evaluation of the Prática Centros e Redes de Excelência Petrobras/Coppe (PCREX) in the light of the following research topics: Triple Helix, Open Innovation, University-Industry Relations and Innovation Networks. The PCREX model proposes the establishment of new permanent interorganizational agencies aimed at the development of specific knowledge areas. The study of the method is based on the case study of the Petrobras Center of Excellence in Geochemistry (Cegeq), the prototype of the application of the method set up in 1996. The research revealed the fine alignment of the PCREX with the Triple Helix and the Open Innovation models of innovation, which confi rms its high potential to leverage the
Política editorial e processo de avalia o de artigos
Nelson Casarotto Filho
Iberoamericana de Engenharia Industrial , 2011,
Abstract: Política editorial e processo de avalia o de artigos
Growth, exchange rates and trade in Brazil: a structuralist post-Keynesian approach
Nelson H. Barbosa Filho
Nova Economia , 2004,
Abstract: This paper presents a structuralist post-Keynesian analysis of trade adjustment in Brazil. Based on the concept of the balance-of-payments (BoP) constraint on growth, the paper investigates the relationship between income growth and real-exchange-rate devaluation necessary to adjust trade to a foreign-exchange constraint. The main result is that, with price-inelastic and income-elastic imports and based on its trade structure in 2002, Brazil may have to compensate an additional 1% of income growth with approximately 7% of real-exchange-rate devaluation in order to keep its trade balance stable in relation to GDP in the near future. Moreover, the trade parameters of Brazil seem to be unfavorable to growth with stable trade, that is, even moderate rates of GDP expansion lead to a substantial increase of imports and, therefore, require an also substantial devaluation of the real exchange rate to avoid a deterioration of the trade balance.
The balance-of-payments constraint:from balanced trade to sustainable debt
Nelson H. Barbosa-Filho
PSL Quarterly Review , 2001,
Abstract: This paper extends the balance-of-payments constraint on growth known as Thirlwall's law to incorporate unbalanced trade and debt accumulation. Assuming that small open economies face a liquidity constraint, the text shows the growth and real-exchange-rate policy rules consistent with a stable ratio of net exports to income. Given such rules, the text shows how the trade balance of a small open economy is residually determined by the ratio of foreign debt to income allowed by international conditions.
Plasma extravasation mediated by lipopolysaccharide-induction of kinin B1 receptors in rat tissues
Paulo Roberto Wille,Richard Vitor,Nelson Horacio Gabilan,Mauro Nicolau
Mediators of Inflammation , 2001, DOI: 10.1080/09629350124164
Abstract: The present study was performed to: (a) evaluate the effects of kinin B1 (Sar{D-Phe8}-des-Arg9-BK; 10 nmol/kg) and B2 (bradykinin (BK); 10 nmol/kg) receptor agonists on plasma extravasation in selected rat tissues; (b) determine the contribution of a lipopolysaccharide (LPS) (100 μ g/kg) to the effects triggered by B1 and B2 agonists; and (c) characterize the selectivity of B1 ({Leu8}desArg9-BK; 10 nmol/kg) and B2 (HOE 140; 10 nmol/kg) antagonists as inhibitors of this kinin-induced phenomenon. B1 and B2 agonists were shown to increase plasma extravasation in the duodenum, ileum and also in the urinary bladder of the rat. LPS pretreatment enhanced the plasma extravasation mediated only by the B1 agonist in the duodenum, ileum, trachea, main and segmentar bronchi. These effects were prevented by the B1. but not the B2 antagonist. In normal rats, the B2 antagonist inhibited the effect of B2 agonist in all the tissues analyzed. However, in LPS-treated rats, the B2 antagonist was ineffective in the urinary bladder.
An algorithm for determining the K-best solutions of the one-dimensional Knapsack problem
Yanasse, Horacio Hideki;Soma, Nei Yoshihiro;Maculan, Nelson;
Pesquisa Operacional , 2000, DOI: 10.1590/S0101-74382000000100011
Abstract: in this work we present an enumerative scheme for determining the k-best solutions (k > 1) of the one dimensional knapsack problem. if n is the total number of different items and b is the knapsack's capacity, the computational complexity of the proposed scheme is bounded by o(knb) with memory requirements bounded by o(nb). the algorithm was implemented in a workstation and computational tests for varying values of the parameters were performed.
An algorithm for determining the K-best solutions of the one-dimensional Knapsack problem
Yanasse Horacio Hideki,Soma Nei Yoshihiro,Maculan Nelson
Pesquisa Operacional , 2000,
Abstract: In this work we present an enumerative scheme for determining the K-best solutions (K > 1) of the one dimensional knapsack problem. If n is the total number of different items and b is the knapsack's capacity, the computational complexity of the proposed scheme is bounded by O(Knb) with memory requirements bounded by O(nb). The algorithm was implemented in a workstation and computational tests for varying values of the parameters were performed.
Hydrokinetic Assessment of the Kvichak River near Igiugig, Alaska, Using a Two-Dimensional Hydrodynamic Model  [PDF]
Horacio Toniolo
Energy and Power Engineering (EPE) , 2012, DOI: 10.4236/epe.2012.46056
Abstract: Two-dimensional hydrodynamic simulations were performed on a monthly basis along 2.5 km of the Kvichak River near Igiugig in southwest Alaska, USA, to estimate flow conditions and to assess the hydrokinetic potential of the river reach. Instantaneous power density function along the computational domain was calculated. Study results indicate that two areas may be suitable for deploying turbines. The best option is located near the town, where the channel is relatively straight. A second possible site is located near the end of the study reach (approximately 2.3 km, along the river, from Lake Illiamna). Monthly-averaged velocities along the thalweg ranged from 1.7 to 2.7 m/s; and from 1.1 to 2 m/s at the upstream and downstream sites, respectively. Similarly, averaged values for the instantaneous power density, reduced by an extraction coefficient, were approximately 1500 and 5500 W/m2 during April and September, respectively, at the upstream site, as well as 400 and 2500 W/m2 for the same months at the downstream site. It was found that a previous resource assessment, which considered cross-sectionally averaged velocities, substantially underestimated the available power density along the river reach. Finally, the importance of having adequate bathymetric data is demonstrated by comparing field measurements with model simulations.
Bed Forms and Sediment Characteristics along the Thalweg on the Tanana River near Nenana, Alaska, USA  [PDF]
Horacio Toniolo
Natural Resources (NR) , 2013, DOI: 10.4236/nr.2013.41003
Abstract:

Sediment sampling and longitudinal river-bottom surveys were conducted along the thalweg on the Tanana River near the city of Nenana, Alaska, USA, to provide basic information for the engineering design requirements of hydrokinetic devices to be deployed in the area. The study reach was located at approximately 64°33'50\"N and 149°04'W. The Tanana is a large glacier-fed river, with open-water flow conditions from May to October. The river presents a single channel in the study area. Granulometric analyses of sediment moving near the riverbed reveals the coexistence of three distinctive types of sediment along the study reach: 1) nearly uniform fine sand; 2) bimodal distributions containing fine sand and medium gravel; and 3) medium gravel. Preliminary relationships between sediment loads and discharge were developed. Dunes with small superimposed dunes were found along the reach. The basic geometric parameters (i.e., wavelength and height) of dunes were measured, and steepness was calculated. In general, dune wavelength increased with increasing discharge. Dune wavelengths ranged from 41 to 67 m, while small-dune wavelengths ranged from 13 to 16 m. Steepness increased slightly with increasing discharge.

 

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