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Search Results: 1 - 10 of 230770 matches for " Ant?nio C.; "
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EXPERIENCIAS COOPERATIVAS EN EL DESARROLLO DE NUEVOS PRODUCTOS. LA INTRODUCCIóN DE HERRAMIENTAS WEB EN EMPRESAS INDUSTRIALES
ANTóNIO C. MOREIRA
Scientia Et Technica , 2006,
Abstract: Utilizando una metodología cualitativa, el artículo analiza la introducción de herramientas web en el desarrollo cooperativo de nuevos productos (DCNP) en PYMES industriales en el contexto portugués. El proceso de investigación tuvo como base la relación proveedor-cliente debido a su característica relacional. Partiendo de un conjunto de tres empresas multinacionales, el estudio fue realizado en un conjunto de 15 PYMES proveedoras de aquellas multinacionales. A nivel de resultados se verifica que, aunque la introducción de herramientas web en el DCNP es amplia, hay dos grupos de empresas con resultados diferentes debido a la estrategia de innovación asumida por las proveedoras.
Sele o e "invers o" da socializa o do trabalho
Marco Antnio C. Figueiredo
Psicologia: Ciência e Profiss?o , 1990, DOI: 10.1590/s1414-98931990000100008
Abstract:
O Estado e os menores de conduta anti-social. Nuno de Campos. Ensaios Catarinenses, Imprensa Universitária, 1979, 117 p.
Dupuy Antnio C?rtes
Sequência : Estudos Juridicos e Politicos , 1981,
Abstract:
Influencia de los Parámetros de Carga en la Estabilidad Direccional de un Vehículo Combinado
Horta,Juan C; Canale,Antnio C;
Información tecnológica , 2009, DOI: 10.4067/S0718-07642009000400015
Abstract: this work is about the directional stability of truck-semitrailer vehicle, commonly used in brazil, as a function of load parameters. for different positions of centre of gravity of semi-trailer, the curves that represent the characteristic movements and the ratio of damping for these movements during curved and straight trajectories are obtained. the influence of load and moment inertia variations for different adopted positions of the centre of gravity of semi-trailer was calculated. the results show significant changes on dynamic response of vehicle with the variations of load parameters. thus, the operating conditions with less safety margins were determined, so they can be avoided by users. the study allows concluding that there are load conditions that although being accepted by the present legislation, must be avoided.
Influencia de los Parámetros de Carga en la Estabilidad Direccional de un Vehículo Combinado The Influence of Parameters of Load in the Directional Stability of Articulated Heavy Vehicle
Juan C Horta,Antnio C Canale
Información Tecnológica , 2009,
Abstract: En este trabajo se estudia la estabilidad direccional de un vehículo comercial combinado camión-tractor semi-remolque (muy utilizado en Brasil), como función de los parámetros de carga. Para diferentes posiciones del centro de gravedad del conjunto semi-remolque-carga, se obtuvo las curvas que representan los movimientos característicos del vehículo en respuesta a la acción de una perturbación externa. Se calculó también, los factores de amortiguación para estos movimientos durante trayectorias curvas y rectas. Se estudió la influencia de la variación de la carga y del momento de inercia del semi-remolque para las diferentes posiciones del centro de gravedad adoptadas. Los resultados indican cambios significativos en la respuesta dinámica del vehículo con la variación de los parámetros de carga. Se determinó así las condiciones operacionales con menor margen de seguridad para que puedan ser evitadas por los usuarios. Se concluye que existen condiciones de carga que, aunque permitidas por la legislación vigente, deben ser evitadas. This work is about the directional stability of truck-semitrailer vehicle, commonly used in Brazil, as a function of load parameters. For different positions of centre of gravity of semi-trailer, the curves that represent the characteristic movements and the ratio of damping for these movements during curved and straight trajectories are obtained. The influence of load and moment inertia variations for different adopted positions of the centre of gravity of semi-trailer was calculated. The results show significant changes on dynamic response of vehicle with the variations of load parameters. Thus, the operating conditions with less safety margins were determined, so they can be avoided by users. The study allows concluding that there are load conditions that although being accepted by the present legislation, must be avoided.
Comparison of Botox® or Prosigne® and Facial Nerve Blockade as Adjuvant in Chronic Migraine  [PDF]
Gabriela R. Lauretti, Christiane P. Rosa, Antnio Kitayama, Bruno C. P. Lopes
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.78047
Abstract: Background: The treatments suggested for chronic migraine (CM) include: 1) intramuscular (im) botulinum toxin (BTX) every 12 weeks, and 2) blockade of peripheral nerves of the head. The present study evaluated the efficacy of facial nerve blockade in combination with a single administration of different low BTX. Methods: Forty patients with CM submitted to unilateral facial nerve blockade (supraorbital, supratrochlear and auriculotemporal) were divided into 4 randomized groups in a double-blind manner in order to receiveim, after 7 days: 25 IU Botox® (Botox group), 25 IU Prosigne® (25-Pro group), 33.3 IU Prosigne® (33-Pro group) or saline (control group), with the dose divided for application to 10 sites in the frontal and bilateral temporal regions. Analgesia and adverse effects were evaluated: 1) before blockade of the facial nerves and 2) 4 weeks, 3) 8 weeks and 4) 12 weeks after BTX-A or saline application (HC clinical trial no. 12465). Results: Botox® (25 IU) or Prosigne® (33.3 IU) resulted in at least seven-day intervals between headache attacks associated with 70% reduction in frequency and intensity of crises over 12 weeks (P < 0.05), while the 25 IU dose of Prosigne® resulted in 8 weeks of analgesia. The conversion factor between Botox® and Prosigne® was 1:1.3. Conclusions: Im application of Botox® (25 IU) or Prosigne® (33.3 IU) one week after nerve blockade on the painful side was equally effective for 12 weeks in patients with chronic daily headache, with the conversion factor between Botox® and Prosigne® being 1:1.3.
Determining Regional Actual Evapotranspiration of Irrigated Crops and Natural Vegetation in the S?o Francisco River Basin (Brazil) Using Remote Sensing and Penman-Monteith Equation
Antnio H. de C. Teixeira
Remote Sensing , 2010, DOI: 10.3390/rs0251287
Abstract: To achieve sustainable development and to ensure water availability in hydrological basins, water managers need tools to determine the actual evapotranspiration (ET) on a large scale. Field energy balances from irrigated and natural ecosystems together with a net of agro-meteorological stations were used to develop two models for ET quantification at basin scale, based on the Penman-Monteith equation. The first model (PM1) uses the resistances to the latent heat fluxes estimated from satellite measurements, while the second one (PM2) is based on the ratio of ET to the reference evapotranspiration (ET0) and its relation to remote sensing parameters. The models were applied in the Low-Middle S?o Francisco river basin in Brazil and, after comparison against field results, showed good agreements with PM1 and PM2 explaining, respectively, 79% and 89% of the variances and mean square errors (RMSE) of 0.44 and 0.34 mm d?1. Even though the PM1 model was not chosen for ET calculations, the equation for surface resistance (rs) was applied to infer the soil moisture conditions in a simplified vegetation classification. The maximum values of rs were for natural vegetation—caatinga (average of 1,937 s m?1). Wine grape and mango orchard presented similar values around 130 s m?1, while table grape presented the lowest ones, averaging 74 s m?1. Petrolina and Juazeiro, in Pernambuco (PE) and Bahia (BA) states, respectively, were highlighted with the biggest irrigated areas. The highest increments are for vineyards and mango orchards. For the first crop the maximum increment was verified between 2003 and 2004 in Petrolina-PE, when the cultivated area increased 151%. In the case of mango orchards the most significant period was from 2005 to 2006 in Juazeiro-BA (129%). As the best performance was for PM2, it was selected and used to analyse the regional ET at daily and annual scales, making use of Landsat images and a geographic information system for different soil moisture conditions. Considering the daily rates of the regional ET, pixels with values lower than 1.0 mm d?1 occurred outside the rainy season, representing the caatinga species. Values from 1.0 to 5.0 mm d?1 during the driest conditions of the year coincided with irrigated crops, being the highest values for table grapes. The highest accumulated ET values during 2006 were for mango orchards, being around 500–1,300 mm yr?1. Vineyards presented lower values, ranging from 450–800 mm yr?1, while in caatinga they were between 200 and 400 mm yr?1. It could be concluded that irrigated mango orchards and vineyards in
O cálculo do custo do capital nas decis?es de investimento em activos reais em Portugal: uma análise empírica
Bastos,César; Martins,António;
Economia Global e Gest?o , 2008,
Abstract: this paper attempts to analyse how the recommended theoretical concepts and procedures regarding the use of the cost of capital in investment analysis are applied in medium and large businesses in portugal. we present a brief revision of literature about the conceptual aspects and the empirical studies carried out to date. we used a questionnaire that was carried out on the one thousand largest non-financial companies in portugal, and then we present results about practices of surveyed firms regarding the use of the cost of capital and compare them to the literature main conclusions.
Avalia??o dos componentes do balan?o de energia durante o primeiro ano de cultura da banana
Teixeira, Antnio H. de C.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2001, DOI: 10.1590/S1415-43662001000100006
Abstract: data of net radiation, soil heat flux, temperature and vapor pressure gradients, collected at agrometeorology experiment station of embrapa semi-árido, at petrolina, pe, brazil, were used to evaluate the diurnal and seasonal beheavior of energy balance throughout the phenological phases of the banana crop in the first production cycle, irrigated by microaspersion. on average, the net radiation was 63% of the global solar radiation. the bowen ratio was used to measure the latent and sensible fluxes. the higher portion of net radiation was utilized as latent heat flux (87%), followed by soil heat flux (11%) and by sensible heat flux (2%). the lower value of net radiation used as sensible heat flux may be because of the nearness of the s?o francisco river that promoted humidity advection to the crop.
O cálculo do custo do capital nas decis es de investimento em activos reais em Portugal: uma análise empírica The cost of capital estimation in capital budgeting decisions: An empirical analysis
César Bastos,António Martins
Economia Global e Gest?o , 2008,
Abstract: Com o presente trabalho pretende-se, de um ponto de vista empírico, analisar a extens o e a profundidade com que os conceitos e procedimentos recomendados pela teoria financeira, relativos ao cálculo do custo do capital, no ambito da avalia o das decis es de investimento, s o aplicados nas médias e grandes empresas portuguesas. Efectuamos uma breve revis o da literatura sobre as práticas recomendadas pela teoria financeira no cálculo e aplica o do custo do capital às decis es de investimento em activos reais e referimos os resultados dos estudos empíricos efectuados sobre esta temática. Descrevemos depois a metodologia utilizada no inquérito efectuado às mil maiores empresas n o financeiras de Portugal e iremos analisar os resultados obtidos. This paper attempts to analyse how the recommended theoretical concepts and procedures regarding the use of the cost of capital in investment analysis are applied in medium and large businesses in Portugal. We present a brief revision of literature about the conceptual aspects and the empirical studies carried out to date. We used a questionnaire that was carried out on the one thousand largest non-financial companies in Portugal, and then we present results about practices of surveyed firms regarding the use of the cost of capital and compare them to the literature main conclusions.
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