A PROSPECTUS FOR RESEARCH ON THE AGRICULTURAL POTENTIAL OF THE SOUTH

Research and Development/Tech Change/Emerging Technologies,

Maser Source Finding Methods in HOPS

The {\bf H}$_2${\bf O} Southern Galactic {\bf P}lane {\bf S}urvey (HOPS) has observed 100 square degrees of the Galactic plane, using the Mopra radio telescope to search for emission from multiple spectral lines in the 12\,mm band (19.5\,--\,27.5\,GHz). Perhaps the most important of these spectral lines is the 22.2\,GHz water maser transition. We describe the methods used to identify water maser candidates and subsequent confirmation of the sources. Our methods involve a simple determination of likely candidates by searching peak emission maps, utilising the intrinsic nature of water maser emission - spatially unresolved and spectrally narrow-lined. We estimate completeness limits and compare our method with results from the {\sc Duchamp} source finder. We find that the two methods perform similarly. We conclude that the similarity in performance is due to the intrinsic limitation of the noise characteristics of the data. The advantages of our method are that it is slightly more efficient in eliminating spurious detections and is simple to implement. The disadvantage is that it is a manual method of finding sources and so is not practical on datasets much larger than HOPS, or for datasets with extended emission that needs to be characterised. We outline a two-stage method for the most efficient means of finding masers, using {\sc Duchamp}.Comment: 8 pages, 1 table, 4 figures. Accepted for publication in PASA special issue on Source Finding & Visualisatio

FOOD AND AGRICULTURE IN THE 1980S: THE IMPLIED RESEARCH PRIORITIES

Research and Development/Tech Change/Emerging Technologies,

Introduction to the Economics of Changing Markets and Evolving Technologies

Agricultural and Food Policy, International Relations/Trade, Marketing,

Interregional and International Competition in the Pork Industry

International Relations/Trade, Livestock Production/Industries, Marketing,

Stranded superconducting cable of improved design

High-current cable developed in liquid helium cooled magnets uses aluminum wire interspersed with the superconductor strands. The aluminum maintains higher electrical conductivity, is light in weight, and has low thermal capacity

PRODUCTIVITY IN U.S. FOOD AND AGRICULTURE: IMPLICATIONS FOR RESEARCH AND EDUCATION

Productivity Analysis,

Resources Needed for Record-Breaking Soybean Yields

In 2006, the soybean industry was astounded when Kip Cullers, a farmer in southwest Missouri reported yields of 139 bushels per acre in the Missouri Soybean Association yield contest. These amazing yields were shattered in 2007 when Mr. Cullers reported yields of 155 bushels per acre. Previous to Mr. Cullers\u27 reports, the record yield was 118 bushels per acre set in small-plot research by Dr. Roy Flannery in 1983 at Rutger\u27s University in New jersey

Decays in Quantum Hierarchical Models

We study the dynamics of a simple model for quantum decay, where a single state is coupled to a set of discrete states, the pseudo continuum, each coupled to a real continuum of states. We find that for constant matrix elements between the single state and the pseudo continuum the decay occurs via one state in a certain region of the parameters, involving the Dicke and quantum Zeno effects. When the matrix elements are random several cases are identified. For a pseudo continuum with small bandwidth there are weakly damped oscillations in the probability to be in the initial single state. For intermediate bandwidth one finds mesoscopic fluctuations in the probability with amplitude inversely proportional to the square root of the volume of the pseudo continuum space. They last for a long time compared to the non-random case