Multimedia synchronization is a significant requirement for distributed multimedia applications. In this paper, a multimedia synchronization model based on timed Petri nets is presented. Using this model one can give ...Multimedia synchronization is a significant requirement for distributed multimedia applications. In this paper, a multimedia synchronization model based on timed Petri nets is presented. Using this model one can give the abstraction and formal description for multimedia object compositions with time-constrained relations. Algorithms for asynchronous user interactions are also presented.展开更多
In this paper,2D asynchronous spectra generated by using the DAOSD approach was utilized to probe interactions between Nd^3＋ and pyridinium dissolved in aqueous solution.A series of cross peaks in the resultant 2D as...In this paper,2D asynchronous spectra generated by using the DAOSD approach was utilized to probe interactions between Nd^3＋ and pyridinium dissolved in aqueous solution.A series of cross peaks in the resultant 2D asynchronous spectrum confirms the occurrence of intermolecular interaction between Nd^3＋and pyridinium.However,no coordination occurs between Nd^3＋ and pyridinium.Interaction between πelectron from aromatic system and/electron from lanthanide ions account for the appearance of cross peaks in 2D asynchronous spectra.Because of the interaction,the emission spectrum of pyridinium exhibits a significant change when neodymium perchlorate was introduced into the system.展开更多
文摘Multimedia synchronization is a significant requirement for distributed multimedia applications. In this paper, a multimedia synchronization model based on timed Petri nets is presented. Using this model one can give the abstraction and formal description for multimedia object compositions with time-constrained relations. Algorithms for asynchronous user interactions are also presented.
基金financially supported by the National Natural Science Foundation of China(No.51373003)Beijing Natural Science Foundation(No.2122059)
文摘In this paper,2D asynchronous spectra generated by using the DAOSD approach was utilized to probe interactions between Nd^3＋ and pyridinium dissolved in aqueous solution.A series of cross peaks in the resultant 2D asynchronous spectrum confirms the occurrence of intermolecular interaction between Nd^3＋and pyridinium.However,no coordination occurs between Nd^3＋ and pyridinium.Interaction between πelectron from aromatic system and/electron from lanthanide ions account for the appearance of cross peaks in 2D asynchronous spectra.Because of the interaction,the emission spectrum of pyridinium exhibits a significant change when neodymium perchlorate was introduced into the system.
