ATM交换机中的信元速率管制技术

本文根据ATM网络的传输特征，讨论了网络拥塞的可能性，详细介绍了使用虚拟调度算法的信元速率管制技术，并结合工程实际应用，给出了一种ATM交换机信元速率管制的设计方法。     

Role of the N-terminal region of Rap1p in the transcriptional activation of glycolytic genes in Saccharomyces cerevisiae

In the yeast two-hybrid system, the N-terminal region of Rap1p was shown to interact with Gcr1p and Gcr2p. Disruption of gcr1 and/or gcr2 in the two-hybrid reporter strain demonstrated that the interaction with Gcr1p does not require Gcr2p, whereas the interaction with Gcr2p is mediated through Gcr1p. Deletion of the N-terminal region of Rap1p alone did not show a growth phenotype, but a growth defect was observed when this mutation was combined with a gcr2 deletion. The poor growth of the gcr1 null mutant was not affected further by the N-terminal deletion of Rap1p, but the growth of gcr1 strains with mutations in the DNA binding region of Gcr1p was affected by the removal of the N-terminal region of Rap1p. These results suggest that one function of the N-terminal region of Rap1p, presumably the BRCT domain, is to facilitate the binding of Gcr1p to the promoter by a protein-protein interaction.     

基于灰色成分替代原理的特殊印刷效果研究

在数码打印机上进行实验,得到CMY三色油墨的灰平衡数据,从而确定CMY三色油墨和K墨的替代关系。根据灰色成分替代原理用CMY三色油墨和K墨制作特殊图案,利用CMY和K墨在可见光和红外波段的光谱响应特性,使一幅图像具有可见光和红外光下两种不同的图像外观,达到防伪印刷的目的。