The Agricultural Policy Outlook: Looking Back Focuses the Road Ahead

Agricultural and Food Policy,

The snail-killing flies of Alaska (Diptera: Sciomyzidae)

Information is given on the geographic distribution, habitat preferences, larval foods, and immature stages for 57 species of 9 genera of Sciomyzidae known to occur in Alaska. An illustrated key to adults is included. Alaska as a habitat for sciomyzid flies is discussed, and information on feeding habits of the larvae is summarized

Oral Interview of Joseph Knutson

Dr. Knutson was president of Concordia College from 1950 to 1974. He discusses the college\u27s finances and its relationship to the American Lutheran Church.https://red.mnstate.edu/oral_interviews/1181/thumbnail.jp

The Artistic Legacy of Georgia O’Keeffe

The work of American artist, Georgia O’Keeffe (1887-1986), was considered to be unique and revolutionary in her own time, but she ultimately achieved a prominent position in the history of art. The enduring inspiration of this important artist is demonstrated by an investigation of key artistic motifs as well as her legacy via the discussion of artists who have been influenced by her: Alfred Stieglitz, Arthur Dove, Marsden Hartley, and the author, Michelle L. Knutson

A Ground-Based Search for Thermal Emission from the Exoplanet TrES-1

Eclipsing planetary systems give us an important window on extrasolar planet atmospheres. By measuring the depth of the secondary eclipse, when the planet moves behind the star, we can estimate the strength of the thermal emission from the day side of the planet. Attaining a ground-based detection of one of these eclipses has proven to be a significant challenge, as time-dependent variations in instrument throughput and atmospheric seeing and absorption overwhelm the small signal of the eclipse at infrared wavelengths. We gathered a series of simultaneous L grism spectra of the transiting planet system TrES-1 and a nearby comparison star of comparable brightness, allowing us to correct for these effects in principle. Combining the data from two eclipses, we demonstrate a detection sensitivity of 0.15% in the eclipse depth relative to the stellar flux. This approaches the sensitivity required to detect the planetary emission, which theoretical models predict should lie between 0.05-0.1% of the stellar flux in our 2.9-4.3 micron bandpass. We explore the factors that ultimately limit the precision of this technique, and discuss potential avenues for future improvements.Comment: 10 pages, 1 table, four figures, accepted for publication in PAS

IMPACTS OF EPA DAIRY WASTE REGULATIONS ON FARM PROFITABILITY

Agricultural and Food Policy,

SOUTHERN REPRESENTATION IN CONGRESS AND U.S. AGRICULTURAL LEGISLATION

Agricultural and Food Policy,

Image selection system

An image selection (ISS) was developed for the NASA-Ames Research Center Earth Resources Aircraft Project. The ISS is an interactive, graphics oriented, computer retrieval system for aerial imagery. An analysis of user coverage requests and retrieval strategies is presented, followed by a complete system description. Data base structure, retrieval processors, command language, interactive display options, file structures, and the system's capability to manage sets of selected imagery are described. A detailed example of an area coverage request is graphically presented