Semi-classical Propagator and van Vleck Determinant in a Mixed Position-momentum Space;

The author generalized the propagator function theory introduced first by Sigmund, and gave a explicitly proof of a equivalence between forward and backward Boltzmann Equations in a multi-component medium by using the generalized propagator function theory.

In this note,we calculated the propagator for a classical particle and a microscopic particle,respectively.

Objective:The aim of this study was to investigate mother_to_child transmission of Mutans streptococci in Shenyang area of China.

In genus Pinus,there are approximately 110 species which can be classified into two groups according to the modes of their seed dispersal,i.

To expedite the recovery of secondary forests on such abandoned fields, the seed bank needs to be supplemented by direct seeding, enrichment planting of desired species and installing artificial perches for facilitating seed dispersal.

hunanensis crown,and to help the seed dispersal by rejecting the drupes stone after ingestion.

In an effect to tackle the problem of the performance deteriorates at low SNR and the high computational complexity in- duced by sensor array processing,beamspace propagator method based on Schur-Hadamard product for joint parameter estimation of co- herently distributed source is proposed.

Instead of eigen-decomposition,the propagator method is applied to generate rotational invariance matrix,and the elevation angle estimation is derived from the estimated azimuth angle.

Based on the propagator method (PM), a novel approach of combining frequency and direction-of-arrival(DOA) estimation in array processing is proposed in this paper.