The paper introduce the design considerations of sigma-delta modulation in fractional synthesizer and 4 types of digital sigma-delta modulations.

The subject, Sigma-Delta Modulation (SDM) and D-class Amplifier, is from Shanghai Fangtek Electronics Co.

Modulation Effect of Periodic Phase to Chemical Oscillation;

Stochastic Resonance Under Modulation in a Model ofElectrooxidation of Formic Acid;

Dynamic modulations on intensity sensitivity evoked by weak noise in the inferior collicular neurons;

Changes of Routine Chemical Components in Burley Tobacco from Topping to Curing;

Physical and Chemical Changes in Yellow Sun-cured Tobacco during Curing;

Effects of Film Color on Oriental Tobacco Curing;

Application of PLL in Modulate and Demodulate Circuits;

Fast and precise computation of structural responses to non uniformly modulated evolutionary random excitations;

In this method,the electric sensitivity is transformed into the electric parameter sensitivity to make the displacement and the high frequent exciting signal modulated.

In this paper,we introduce the method to take multislit pseudocolor encoding rainbow hologram with modulating light.

We present a method of anti-control of chaos on the degenerate optical parametric oscillator via modulating the reduced decay rate of the fundamental mode with a sinusoid wave to convert the steady state without output of subharmonical mode or periodic state into chaotic state.

Experimental observation on analgesic effect of modulated medium frequency electrotherapy and low frequency electrotherapy;

The dynamics properties of two modulated-coupling single-mode lasers system are analyzed by numerical simulation.