Spin dynamics in semiconductors

This article reviews the current status of spin dynamics in semiconductors which has achieved a lot of progress in the past years due to the fast growing field of semiconductor spintronics. The primary focus is the theoretical and experimental developments of spin relaxation and dephasing in both spin precession in time domain and spin diffusion and transport in spacial domain. A fully microscopic many-body investigation on spin dynamics based on the kinetic spin Bloch equation approach is reviewed comprehensively.Comment: a review article with 193 pages and 1103 references. To be published in Physics Reports

Learning control of linear systems with periodic inputs using a method of harmonic analysis

This paper describes a learning control system which is capable of controlling a linear plant subjected to periodic inputs, providing that an upper limit for the order of the plant is known. Otherwise the characteristics of the plant and the inputs are unknown. Only one system variable is measured. The feature measurements used for recognition are the harmonics of the system error. The controller learns to obtain the best choice of control parameters of each environment by hill climbing and a pattern recognizing process. The controller also learns to construct a separation surface for the pattern classes in the measurement space by using a piecewise linear classification technique. The learning control system was simulated on an EAI 690 hybrid computer facility. Experimental results obtained from the simulation are presented

Pharmacology and applications of Chinese materia medica. v. II

xiv, 724 p. ; 26 cm

Pharmacology and applications of Chinese materia medica. v. I

xiv, 724 p. ; 26 cm

Pharmacology and applications of Chinese materia medica. v. I

xiv, 724 p. ; 26 cm