3,542 research outputs found

    Data requirements for verification of ram glow chemistry

    Get PDF
    A set of questions is posed regarding the surface chemistry producing the ram glow on the space shuttle. The questions surround verification of the chemical cycle involved in the physical processes leading to the glow. The questions, and a matrix of measurements required for most answers, are presented. The measurements include knowledge of the flux composition to and from a ram surface as well as spectroscopic signatures from the U to visible to IR. A pallet set of experiments proposed to accomplish the measurements is discussed. An interim experiment involving an available infrared instrument to be operated from the shuttle Orbiter cabin is also be discussed

    EVALUATION OF NORTH DAKOTA FARM BUSINESS MANAGEMENT EDUCATION PROGRAM

    Get PDF
    Net farm income of participants in the North Dakota Farm Business Management Education Program increased with years of enrollment both in absolute terms and compared to peer group benchmarks. Median net farm income increased 7,829and7,829 and 14,191 between the first and fifth year of enrollment for all farms in the program and a subset of farms with five consecutive years of records starting with the first year of enrollment, respectively. Net farm income by year of program participation was compared to a benchmark median net farm income for the same geographic region, calendar year, and farm type in an attempt to isolate the affects of management from weather and other exogenous factors. Net farm income as a percent of benchmark increased 17.5 percentage points from first year participation farms to fifth year farms and 28 percentage points for farms for which there were five consecutive years of records starting with the first year of enrollment. Increased net farm income for both groups was accompanied by improved efficiency, increased farm size, and greater net worth. Note: Figures 1 is not included in the machine readable copy--contact the authors for more information.Farm Management, Teaching/Communication/Extension/Profession,
    • …
    corecore