The issues of energy development management Germany at the present stage, in near and long term are analyzed. sources fuel resources typical for country's economy considered taking into account many criteria. Considerable attention was paid to logistical issues, construction terminals receiving reduced natural gas, which will make it possible receive from producers regions world. It is noted th...

The three dimensional U(1) Lattice Gauge, in the weak coupling limit, is dual to a Discrete Gaussian model. We investigate this dual model and use it to calculate properties of the U(1) theory. We find that, because of the nature of the dual model, its advantages are outweighed by large autocorrelation times generated when the dual system becomes disordered.

This paper presents a modified nine switch inverter with two inputs and two Z-source networks. This inverter has two DC inputs and two AC outputs. Input DC voltages can be boosted to the required level. Amplitude, frequency and phase of AC output voltages can be controlled, independently. The proposed converter can be used in applications with two unregulated DC sources, which require feeding ...