The development of a model to infer precipitation from microwave measurements

To permit the inference of precipitation amounts from radiometric measurements, a radiative interaction model was developed. This model uses a simple computational scheme to determine the effects of rain upon brightness temperatures and can be used with a statistical inversion procedure to invert for rain rate. Precipitating cloud models was also developed and used with the microwave model for frequencies of 19.35 and 37 GHz to determine the variability of the microwave-rain rate relationship on a global and seasonal basis

Modelling Organic Dairy Production Systems

In this study, a large number of organic dairy production strategies were compared in terms of physical and financial performance through the integrated use of computer simulation models and organic case study farm data. Production and financial data from three organic case study farms were used as a basis for the modelling process to ensure that the modelled systems were based on real sets of resources that might be available to a farmer. The case study farms were selected to represent a range of farming systems in terms of farm size, concentrate use and location. This paper describes the process used to model the farm systems: the integration of the three models used and the use of indicators to assess the modelled farm systems in terms of physical sustainability and financial performance

On a generalized quantum SWAP gate

The SWAP gate plays a central role in network designs for qubit quantum computation. However, there has been a view to generalize qubit quantum computing to higher dimensional quantum systems. In this paper we construct a generalized SWAP gate using only instances of the generalized controlled-NOT gate to cyclically permute the states of d qudits for d prime

‘Happy Families?’: Single Mothers, the Press and the Politicians

FOR THOSE OF US who have been following how lone parents are represented in media and political debates over the last few years, the shift was all too apparent. By Spring 1997, the political scapegoating of single mothers as being responsible for tearing apart the moral fabric of society had become less frequent; tabloid headlines which screamed ‘family breakdown’, ‘scroungers' and ‘welfare benefit crisis' appeared less often; and many politicians had started to project themselves as, at the least, concerned about the welfare of lone parents and their children. Surprising really, that is, until we remember the backdrop—the UK General Election and 1.3 million UK lone parent voters. By April 1997, a growing backlash against the more extreme and pathologising accusations against single mothers had rendered explicit vilification unacceptable. To pull votes a different sort of language had to come into play—one which didn't risk turning off the electorate but would still allow a freezing or cutting of welfare spending on lone parent families. Since it was now politically inexpedient to engage in vitriolic attack, there emerged a new discourse—one which reappropriated and redefined lone parents as chief targets of government aid. Close scrutiny of the texts circulating from 1992 to the time of the General Election offers insights of how policy agendas, political rhetoric and news interweave to construct a definition of lone parents which bears little resemblance to how they may see themselves

Variability Flagging in the Wide-field Infrared Survey Explorer Preliminary Data Release

The Wide-field Infrared Survey Explorer Preliminary Data Release Source Catalog contains over 257 million objects. We describe the method used to flag variable source candidates in the Catalog. Using a method based on the chi-square of single-exposure flux measurements, we generated a variability flag for each object, and have identified almost 460,000 candidate sources that exhibit significant flux variability with greater than ~7σ confidence. We discuss the flagging method in detail and describe its benefits and limitations. We also present results from the flagging method, including example light curves of several types of variable sources including Algol-type eclipsing binaries, RR Lyr, W UMa, and a blazar candidate

Dynamic Spin-Polarized Resonant Tunneling in Magnetic Tunnel Junctions

Precisely engineered tunnel junctions exhibit a long sought effect that occurs when the energy of the electron is comparable to the potential energy of the tunneling barrier. The resistance of metal-insulator-metal tunnel junctions oscillates with an applied voltage when electrons that tunnel directly into the barrier's conduction band interfere upon reflection at the classical turning points: the insulator-metal interface, and the dynamic point where the incident electron energy equals the potential barrier inside the insulator. A model of tunneling between free electron bands using the exact solution of the Schroedinger equation for a trapezoidal tunnel barrier qualitatively agrees with experiment.Comment: 4pgs, 3 fig

Cosmic ray tables - Asymptotic directions, variational coefficients and cut-off rigidities IQSY instruction manual no. 10

Cosmic ray deflections in geomagnetic field, variational coefficients, and diurnal intensity variations - table

Remote sensing applications to resource problems in South Dakota

There are no author-identified significant results in this report