Interest In Extension Research Articles

High Heat-Flux Sensor Calibration: A Monte Carlo Modeling

Conventional calibration of heat-flux sensors uses high-temperature blackbody radiation and places the sensors away from the blackbody aperture. This approach limits the achievable calibration heat flux to about 50 kW/m 2 . Recent interest in extension of the calibration to higher heat-flux levels requires placement the sensors inside the heated cavity under nearly hemispherical irradiation environment. The incident flux at the sensor location depends on the effective emissivity, which is a function of the combined cavity and sensor geometry, and the properties of the radiating surfaces. A scheme is presented to compute the effective emissivity for such measurement schemes by the use of the Monte Carlo technique. Typical results presented demonstrate the influence of the cavity wall surface emissivity and diffusity, nonuniform temperature distributions, and the sensor location on the calculated effective emissivity

Agribusiness And Extension: Characteristics Of Successful Programs To Serve A Rapidly Changing Clientele

AbstractThe market for agribusiness extension activities and programming is diverse, intensely competitive, and national or international in scope. It is a market that agricultural economists cannot serve alone. Despite these complexities, a strong agribusiness extension effort is critical to the success of agribusiness research and teaching programs. Agribusiness extension opportunities include extending traditional agricultural economics research, small business management programs, economic/technical education programs, and management education. Keys for conducting successful agribusiness extension programs include understanding client needs, locating and employing the best instructional talent available, and flawless execution of the activity. Stimulating faculty interest in agribusiness extension is a major challenge. Most schools will have the opportunity to focus their traditional extension education efforts on the non-traditional agribusiness audience. A few schools will be successful in developing a new extension program emphasis in agribusiness management education. Both types of contributions are important for the long-run viability of the profession.