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

Lunar landing flight research vehicle Patent

Lunar landing flight research vehicl

Hole polaron formation and migration in olivine phosphate materials

By combining first principles calculations and experimental XPS measurements, we investigate the electronic structure of potential Li-ion battery cathode materials LiMPO4 (M=Mn,Fe,Co,Ni) to uncover the underlying mechanisms that determine small hole polaron formation and migration. We show that small hole polaron formation depends on features in the electronic structure near the valence-band maximum and that, calculationally, these features depend on the methodology chosen for dealing with the correlated nature of the transition-metal d-derived states in these systems. Comparison with experiment reveals that a hybrid functional approach is superior to GGA+U in correctly reproducing the XPS spectra. Using this approach we find that LiNiPO4 cannot support small hole polarons, but that the other three compounds can. The migration barrier is determined mainly by the strong or weak bonding nature of the states at the top of the valence band, resulting in a substantially higher barrier for LiMnPO4 than for LiCoPO4 or LiFePO4

Calculation of ionization equilibria for oxygen, neon, silicon, and iron

Ionization equilibria for iron, neon, oxygen, and silico

A PULL FACTOR ANALYSIS OF TRENDS IN FOOD AND BEVERAGE RETAIL SALES IN MISSISSIPPI COUNTIES

Agribusiness,

AN ASSESSMENT OF THE IMPACT OF THE RURAL EMPOWERMENT ZONE AND ENTERPRISE COMMUNITY PROGRAM ON TEXAS' RIO GRANDE VALLEY

A Human Development Index (HDI) was developed to analyze the impact of the rural empowerment zone program on counties in the Texas Rio Grande Valley. Results of the analysis indicate that minimal development has taken place in these counties. This outcome is attributable to several institutional factors.Community/Rural/Urban Development,

SOURCES OF CHANGE IN STATE-LEVEL AGRICULTURAL PRODUCTION IN MEXICO: IMPLICATIONS FROM THE PESO CRISIS OF 1994-1995

Production Economics,

A TDM synchronization system for multiple access satellite communication

Time Division Multiple Access /TDMA/ system for satellite communication with ground station syste

Diffusion of solar cosmic rays and the power spectrum of the interplanetary magnetic field

Solar cosmic ray diffusion and interplanetary magnetic field power spectru

Comment on ``Bethe Ansatz Results for the 4f-Electron Spectra of a Degenerate Anderson Model ''

In a recent letter, Zvyagin calculates the density of states for 4f electrons coupled to a conduction band in the framework of the Bethe ansatz (BA) solution for the degenerate Anderson model. It is claimed that the results qualitatively disagree with the results obtained for the same model but using a variational approach. Even the high energy feature in the f-spectral function near the 4f-level energy ef, i.e. the ``normal'' ionization peak (NIP), is argued to be qualitatively different in the two approaches. In the following we point out that this is not the case.Comment: 1 page, RevTeX, no figur