NEW PROGRAMS TO BENEFIT RURAL HOUSEHOLDS AND BUSINESSES

Consumer/Household Economics,

Rotary-wing aircraft terrain-following/terrain-avoidance system development

Work being accomplished to develop a real-time, piloted simulation of a helicopter using the vertical motion simulator at NASA Ames is discussed. The trajectory generation algorithm and the flight path controller are described, and the software integration of the entire terrain following/terrain avoidance (TF/TA) system is discussed. Real-time simulation requirements and the unique features of applying TF/TA system to helicopter flight are summarized. Initial results indicate that the system is satisfactory for automatic, low level TF/TA helicopter flight

The Role of Certification in the Brazilian Fruit Chain

Concerns about food safety and standards in the developed countries, particularly in Europe and the United States have made certification inevitable for worldwide fruit producers who target such export markets. The fact that certification is demanded by final consumers is increasingly making buyers, retailers and wholesalers buy certified products from the producers. For the fruit industry in Brazil, certification has important consequences as it ensures access to export markets. Using primary data obtained from interviews with 303 small, medium and large mango and grape producers in the regions of Juazeiro/BA and Petrolina/PE in Brazil, this paper aims at assessing the determinants of demand for certification among mango and grape producers. Empirical analysis using a logit model shows that grapes farmers have higher likelihood for certification than mango growers. The farmer’s education level and years of experience producing fruits are the major positive determinants for certification. The factors which decrease the chances to adopt certification are small size of the farm, nonagricultural income, awareness and trust type of arrangement.Certification, fruits, logit model

Digital image preparation for submission to a scientific publication

La publicación de un trabajo científico –culminación de un período de intensa dedicación metodológica– demanda a los autores un arduo trabajo de escritura para lograr presentar a sus lectores los resultados experimentales en forma clara y unívoca y aportar conclusiones originales y veraces. Así mismo, los investigadores deben considerar el envío del material en una forma acorde con las características solicitadas por cada editorial, sea su destino final el formato digital o el impreso sobre papel.Fil: Dorr, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin