Build a conceptual model or two of the human psyche, and then experiment with a number of scenarios on how technologies might impact the basic human mind, brain, and condition.

如下是我们人性研究网站的宗旨：建立一至二个研究人类心理的概念模型，并通过若干情景实验，研究技术如何对人类心理、大脑和身体状况产生影响。

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A two-strain SIR epidemic model is discussed and an explicit formula for the basic reproductive number is derived by analyzing the local stability of the trivial equilibrium.

讨论了一类由两种不同病毒导致的SIR流行病模型，分析了平凡平衡点的局部稳定性，得到了基本再生数的数学表达式；

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A large number of mathematical model is describe by differential equations in Science and technology, together engineering. the basic equation is differential equations in a lot of subjects.

科学技术、工程中的大量数学模型可以用微分方程来描述，很多学科的基本方程本身就是微分方程。

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