三类基因振子和它们的基本动力学

蛋白质作为基因调控过程的产物,它的丰度的周期变化处在重要细胞过程的心脏.把基因振子分为3类:松弛型基因振子、规则型基因振子和随机型基因振子.我们分析了它们的基本动力学,显示出它们有不同的动力学性质.例如,松弛振子展示出跳跃动力行为,规则振子展示出规则的极限环,而随机振子展示出连贯共振.这种分类对系统地研究基因振子和它们的群体行为将起着重要的作用.

基因振子同步化的数值模拟

Jordi Garcia-Ojalvo等人2004年在PNAS上发表了一篇文章,建立了多细胞基因共振的数学模型。该文对这个模型进行数值模拟,得到了同步化过程的实例,并研究Q值、细胞数量与同步化过程的关系。

Layout Design and Optimization of RF Spiral Inductors on Silicon Substrate

The effects of key geometrical parameters on the performance of integrated spiral inductors are investigated with the 3D electromagnetic simulator HFSS.While varying geometrical parameters such as the number of turns(N),the width of the metal traces(W),the spacing between the traces(S),and the inner diameter(ID),changes in the performance of the inductors are analyzed in detail.The reasons for these changes in performance are presented.Simulation results indicate that the performance of an integrated spiral inductor can be improved by optimizing its layout.Some design rules are summarized.