To a one-parameter family of Calabi-Yau threefolds, we can associate the extended period map by log Hodge theory Kato and Usui. In present paper, study image maximally unipotent monodromy point under map. As an application, prove generic Torelli theorem for large class families threefolds.

Carbonate reservoirs exhibit complex pore structure, which significantly affects the elastic properties and seismic response, as well prediction of physical parameters. As one main factors impacting fluid prediction, structure parameter directly involves in few inversion methods. In order to predict inversion, a novel quantitative reflection coefficient formula is proposed, that integrate Russe...