Carrier extraction circuit

Feedback loop extracts demodulated reference signals from IF input and feeds signal back to demodulator. Since reference signal is extracted directly from carrier, no separate reference need be transmitted. Circuit obtains coherent carrier from balanced or unbalanced four-phase signal of varying characteristics

RETHINKING COTTON PROMOTION

Crop Production/Industries, Marketing,

Waveforms for Gravitational Radiation from Cosmic String Loops

We obtain general formulae for the plus- and cross- polarized waveforms of gravitational radiation emitted by a cosmic string loop in transverse, traceless (synchronous, harmonic) gauge. These equations are then specialized to the case of piecewise linear loops, and it is shown that the general waveform for such a loop is a piecewise linear function. We give several simple examples of the waveforms from such loops. We also discuss the relation between the gravitational radiation by a smooth loop and by a piecewise linear approximation to it.Comment: 16 pages, 6 figures, Revte

The Weyl tensor two-point function in de Sitter spacetime

We present an expression for the Weyl-Weyl two-point function in de Sitter spacetime, based on a recently calculated covariant graviton two-point function with one gauge parameter. We find that the Weyl-Weyl two-point function falls off with distance like r^{-4}, where r is spacelike coordinate separation between the two points.Comment: 9 pages, no figure

Inflation measurement and inflation targets: the UK experience

Inflation (Finance) ; Monetary policy - Great Britain ; Great Britain

Colonel Utley\u27s Emancipation - Or, How Lincoln Offered to Buy a Slave

The reputation of Abraham Lincoln has see-sawed over the last half-century on the fulcrum of race, and the results have not been happy for that reputation. As Gerald Prokopowicz has written, the big question about Lincoln and slavery runs today like this: Was Lincoln really the Great Emancipator that we have traditionally been brought up to admire, or was he just a clever, lying, racist, white male politician who had no interest in the well-being of black America other than when it served his political interests? No longer is it necessary, as one historian has wryly remarked, for politicians to get right with Lincoln. Historians now yearn to get right with Frederick Douglass, and to judge by the recent freshet of literature on Lincoln and Douglass, it is now incumbent on Lincoln to be gotten right with Frederick Douglass, too. One of the most damaging accusations leveled against the possibility of justifying Lincoln on race appears in Lerone Bennett\u27s infamous screen, Forced into Glory: Abraham Lincoln\u27s White Dream, where, as the finale to a battery of accusations of racism, Bennett\u27s Lincoln personally ordered Union officers to return runaway slaves to slavemasters and turned a blind eye to Kentuckians, for example, who were selling and reenslaving African-Americans freed by the war and congressional acts. [excerpt