Impact of Double-Row Height Standard Cells on Placement and Routing
In this article we propose a systematic method to study how increasing use of double-row height cells would impact placement and routability of a circuit. To facilitate our study, we handcraft 87 standard cells, each of which has two layouts of the same area, one designed with single-row height and the other designed with double-row height. Experimental results show that the compromise made by placement, later turned into routability degradation, for handling double-row height cells reaches its peak when a circuit has about 30% of the cells being double-row height cells if placement is done with a core utilization of 90%. It is about 40% if a core utilization of 80% is employed.
ObjectiveTo analyze the risk factor of diabetes mellitus in Shenzhen city.MethodsRisk factors of DM was analyzed by factor analysi s and linear structural relation model,then fit and evaluate the model. ResultsIndex of biochemistry affected directly the statu s of disease index of physiology,affected the status of disease not only directl y but also indirectly through the index of biochemistry as well sex and living h abit,affected indirectly the status of disease. ConclusionThe linear structural relation model could wel l analyze the risk factor of DM.