【Key words】 High-Speed Railroad； Technological Innovation； Company-University-Research Cooperation； Risk Shares；
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On one hand, the fix of concession period is affected by concession period patterns, different patterns have different decision patterns;on the other hand, the length of the period is affected by risk, different risk shares decide different length concession periods.
特许权期的制定一方面要受到特许权期类型的影响,不同的特许权期类型的决策模型也不同;另一方面,特许权期的长短还受风险的影响,不同的风险分担,会导致不同长度的特许权期。
参考来源 - BOT项目中非系统风险对特许权期的影响分析·2,447,543篇论文数据，部分数据来源于NoteExpress
His strategy this year has involved shorting financial shares, an approach with greater downside risk.
他今年的策略是作空金融类股，这种做法具有很大的下行风险。
Investors who acquire stock in a new company are taking more of a risk than buying shares of well-established companies but the potential gain is much greater.
投资者购买新公司的股票的风险比购买一家大型企业股票的风险要大，但是收益也大。
Diversification - By owning shares in a mutual fund instead of owning individual stocks or bonds, your risk is spread out.
多元化-拥有共同基金股份比起单独拥有股票或者债券来说，你的风险被分散了。
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