In the paper, using production function and cost function, We have set up a theoretic model of intangible assets appraisal by the method of managerial economics.

本文采用管理经济学的方法，利用生产函数和成本函数，建立一个无形资产评估的理论模型，适用于生产技术类的无形资产评估问题的理论分。

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In this paper, we propose a method of appraisal and selection alternative by calculating and comparing the risk value and risk cost of the alternative.

本文提出了一种通过对决策方案风险价值与风险费用的计算和比较来评价选择方案的方法。

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Contingent valuation method (CVM) and travel cost method (TCM) now dominate these assessment studies, however the appraisal value content is actually different.

条件价值法和旅行成本法是当前较多采用的森林游憩资源价值评价方法，评价的价值内容却不同。

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