标题： 僵尸的起源：一种建模方法 显示英文标题

标题： On the origin of zombies: a modeling approach

摘要： 僵尸末日是一种可能比人类历史上任何流行病都更糟糕的疫情。 然而，尽管流行文化中存在僵尸起义的机制，但从进化的角度来看，僵尸是否真的能从死人中复活仍然是未知的。 为了对此未知情况进行深入理解，我们创建了一个数学模型，用于预测僵尸末日中人类和僵尸种群的变化趋势。 我们根据美国的人口统计数据、僵尸文学内容对模型进行了参数化，然后进行了一次进化入侵分析，以确定僵尸进化的条件。 我们的结果表明，只要传播率与僵尸死亡率的比率足够大，僵尸入侵在理论上是可能的。 虽然在自然中达到这种比率并不常见，但僵尸蚂蚁真菌的存在表明这是可能的，从而暗示人类中可能发生僵尸末日。 显示英文摘要

摘要： A zombie apocalypse is one pandemic that would likely be worse than anything humanity has ever seen. However, despite the mechanisms for zombie uprisings in pop culture, it is unknown whether zombies, from an evolutionary point of view, can actually rise from the dead. To provide insight into this unknown, we created a mathematical model that predicts the trajectory of human and zombie populations during a zombie apocalypse. We parameterized our model according to the demographics of the US, the zombie literature, and then conducted an evolutionary invasion analysis to determine conditions that permit the evolution of zombies. Our results indicate a zombie invasion is theoretically possible, provided there is a sufficiently large ratio of transmission rate to the zombie death rate. While achieving this ratio is uncommon in nature, the existence of zombie ant fungus illustrates it is possible and thereby suggests that a zombie apocalypse among humans could occur.