PRINCIPLES OF ADAPTATION IN COMPLEX SYSTEMS

描述：PI建议制作生态系统的计算机模型， 单细胞生物 每个细胞内的一个过程网络 它的持久性和与环境的相互作用。 网络 通过化学物质的交换， 环境，形成一个全球网络。 在一些模型中， 突变可以改变这些网络， 细胞发生。 私家侦探想验证一个假设 的细胞将共同进化到一个相变，或边界， 秩序和混沌，在三个轴上：（1）动态轴， 表征细胞和生态系统中的状态变化， 短期或生理时间尺度;（2）共同进化轴， 表征细胞相互作用的策略;和（3）轴 分子多样性，用于表征新的 系统中的分子。 （我在这里使用“混乱”一词， disorder --PI使用的术语--不是数学意义上的。 的 PI将生态系统建模为最简单的布尔网络 分析。

DESCRIPTION: The PI proposes to make computer models of ecosystems of unicellular organisms. A network of processes within each cell mediates its persistence and interaction with its environment. The networks within individual cells are coupled by exchanges of chemicals through the environment, forming a global network. In some of the models mutations can modify these networks, and differential reproduction of cells occurs. The PI wants to test the hypothesis that the population of cells will coevolve toward a phase transition, or boundary, between order and chaos, on three axes: (1) the dynamic axis, for characterizing the changes of state in the cells and ecosystem on a short-term or physiological time scale; (2) a coevolutionary axis, for characterizing the strategies with which cells interact; and (3) an axis of molecular diversification, for characterizing the evolution of novel molecules in the system. (I use the term "chaos" here loosely to mean disorder -- the term the PI uses -- not in the mathematical sense.) The PI will model the ecosystem as a Boolean network in the simplest analyses.