Using concept of information entropy to express quality of energy-mass stream, to announce nature of artificial system simulating natural system is the subject of this paper.

本文引用信息熵的概念来表示能量—物质流的品质，以揭示人工系统模拟自然系统的本质。

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Artificial neural network is one of artificial system, which simulates structural and functional characteristics of biological neural network resorted to engineering technological means.

而神经网络则是用工程技术手段模拟生物神经网络的结构特征和功能特征的一类人工系统。

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In the paper, the human being, in an abstract sense, is deployed as an important component of the artificial system, whose characteristics and dynamic reciprocity with the environment are studied.

文中把抽象的人作为人工系统的重要元素，研究了人工系统的特性及与环境相互作用的动态演化规律。

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Dr.Damiano has partnered with scientists at Massachusetts General Hospital to develop a computer program designed to run a system they call an artificial endocrine pancreas.

VOA: standard.2010.04.15

That really would act like an artificial nervous system bypassing the patient's broken natural one.

ECONOMIST: We can rebuild him. We have the technology

In the case of Dr Forrest's Artificial Immune System, however, the analogy with biology is far stronger.

ECONOMIST: A thousand ills require a thousand cures

Panasonic's artificial photosysnthesis system has a simple structure with highly efficient CO2 conversion, which can utilize direct sunlight or focused light.

ENGADGET: Panasonic Photosynthesis System converts carbon dioxide to organic material with plant-like efficiency