On a Net-radiometer

Constraints on the polarization purity of a Stokes microwave radiometer

Measurement of the third and fourth Stokes parameters of microwave thermal emission can be degraded by nonideal radiometer characteristics. Of particular importance is the level of polarization purity and the knowledge of polarization impurity on the part of the instrument. An explicit relationship is developed between the true Stokes parameters and the measurements, as functions of nonideal po...

Electron Cyclotron Emission Radiometer Upgrade on the JET Tokamak . Electron Cyclotron Emission Radiometer Upgrade on the JET Tokamak

On net-Laplacian Energy of Signed Graphs

A signed graph is a graph where the edges are assigned either positive ornegative signs. Net degree of a signed graph is the dierence between the number ofpositive and negative edges incident with a vertex. It is said to be net-regular if all itsvertices have the same net-degree. Laplacian energy of a signed graph is defined asε(L(Σ)) =|γ_1-(2m)/n|+...+|γ_n-(2m)/n| where γ_1,...,γ_n are the ei...

Microwave Radiometer for Cloud Carthography: A 22channel groundbased microwave radiometer for atmospheric research

A 22-channel Microwave Radiometer for Cloud Carthography (MICCY) for the profiling of tropospheric temperature, humidity, and cloud liquid water has been developed. The radiometer has 10 channels along the high-frequency wing of the 22.235 GHz water vapor line, 10 channels along the low-frequency side of the 60 GHz oxygen complex, and 2 channels at 90 GHz. Two features make the radiometer a uni...

On-net and off-net pricing on asymmetric telecommunications networks

The differential between on-net and off-net prices, for example on mobile telephony networks, is hotly debated between telecoms operators and regulators. Small operators contend that their competitors’ high off-net prices are anticompetitive. We show that if the utility of receiving calls is taken into account, the equilibrium pricing structures will indeed depend on firms’ market shares. Large...