计算机科学 ›› 2022, Vol. 49 ›› Issue (1): 259-263.doi: 10.11896/jsjkx.210200131
吴立波, 黄玉芳
WU Li-bo, HUANG Yu-fang
摘要： 基于DNA链置换反应构建了逻辑推理问题的DNA计算模型。在不依托荧光标记技术等DNA实验技术的前提下,利用尽量少的DNA反应链和链置换反应以及构建0-1函数,实现了DNA链的浓度变化与布尔逻辑信号值之间的对应关系,将DNA模拟计算和数字逻辑运算相结合,设计出基于DNA链置换反应的基本逻辑运算“与”“或”“非”的DNA计算模型。利用DNA链置换反应的级联特性,将基本逻辑运算进行任意的组合,形成组合逻辑表达式,以满足不同逻辑推理问题的需求及实现完整的逻辑推理过程。通过实例得到了可满足性问题这一特殊逻辑推理问题的可行解。所有DNA链置换反应的过程和相关DNA链的浓度变化均通过Visual DSD软件仿真模拟实现。
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