We propose a silicon ring-based optical modulation method to perform chirp-free optical modulations. In this scheme, we locate the light to be modulated at the resonance of the ring and tune the coupling coefficient between the ring and the straight waveguide by using a push-pull coupling structure. The chirp-free phase modulation can be achieved by varying the coupling coefficient in a large r...

Active object-oriented database systems are especially useful in the area of nonstandard applications in order to implement an event-driven and constraint-driven system environment. Several approaches exist in literature integrating active concepts into object-oriented databases. For most systems, their knowledge model is based on Event/Condition/Action rules, and their execution model is based...

Recent neuroimaging studies of long-term episodic memory have suggested that left prefrontal cortex predominates in encoding condition, whereas right prefrontal cortex predominates in retrieval condition (hemispheric encoding and retrieval asymmetry, HERA model). The present electroencephalographic (EEG) study investigated the functional coupling of fronto-parietal regions during long-term memo...

concrete deformation due to temperature and moisture condition will always develop simultaneously and interactively. the environmentally (hygral and thermally) induced stress and deformation are essential to concrete durability. to simulate the deformation of concrete caused by the coupling effect of temperature and moisture, a numerical simulation approach is proposed comprising analytical pro...

A diesel engine is a typical dynamic system. In this paper, dynamics method proposed to establish the Hamiltonian model of engine, which solves main difficulty constructing function under multi-field coupling condition. Furthermore, control structure modification introduced study engine. By means principle energy-shaping and theories, modified energy constructed, proved be quasi-Lyapunov closed...