通过对互联网基础设施的社会与私人收益、成本的分析比较，得出了互联网基础设施社会价值最大化的均衡条件。
Through analyzing and comparing between social and private profit and cost from internet infrastructure, we draw out the equilibrium condition to maximize the social value of internet infrastructure.
立足于产品的绿色设计，构建了产品再回收设计的经济性分析模型，以保证产品在回收处理阶段的成本与收益之间的均衡。
Based on product green design, this paper proposes the product recycling design economic analysis model to assure the equilibrium of costs and benefits at the recycling stage.
会计诚信既表现为行为主体的自律水平，又是主体对诚信成本与诚信收益的一种心理评价，评价结果将使会计诚信在一定条件下达到均衡。
As a kind of self-discipline of its actor and psychological evaluation of its cost and income, accounting integrity will reach its equilibrium in certain social circumstance.
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