In order to achieve maximum return with a minimum degree of risk, it is important to study the comovement between these two assets.

为了从组合中获取最大收益和最大限度的规避风险，研究这两种资产之间的联动问题具有重要意义。

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The Accord recommended that a bank should hold a minimum o 4% o its risk weighted assets as Tier I capital and at least 8% o risk weighted assets as total capital.

巴塞尔协议建议，银行持有的一级资本至少应该是风险加权资产的4%，总资本至少应该是风险加权 资产的8%。

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Basel II left the minimum capital requirements at 8% of risk-weighted assets.

FORBES: Basel Barriers: How capital requirements would impede progress in the sovereign debt crisis

They have to hold a minimum total capital of 8% of risk-weighted assets - that is, capital held to back the loans that they make.

BBC: EU tightens up bank lending rules and bonuses

Since the new Europe-wide rule to strengthen banks is that they must - by the middle of 2012 - have a minimum of 9% capital on a Basel 2.5 basis relative to their risk-weighted assets, after allowing for the fall in the price of their holdings of the debts of over-indebted eurozone countries, by definition it is the banks in those over-indebted eurozone countries that emerge as weakest.

BBC: Southern European banks need most capital