Methods: PPS was used for sampling, Human capital method and Willing-to-pay method were used in the calculation of economic burden of disease.

方法：采用PPS抽样，应用人力资本法和支付意愿法对疾病的经济负担进行计算。

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The farmers themselves pay to keep it running. Their new irrigation method has cut water usage by half.

VOA: standard.2009.12.10

At a minimum, said Southwestern Law School mass-torts expert Byron Stier, his pay and method of calculating it should be disclosed.

FORBES: Feinberg To Disclose Salary, Acknowledges 'Perception Of Conflict'

Still, while this pay-as-you-weigh method may prove effective for a small commuter operation like Samoa Air, some analysts question whether the model would make business sense for large commercial carriers.

WSJ: Weigh More, Pay More on Samoa Air

Wallace allegedly made money using this method to drive traffic to sites that pay for referrals.

FORBES: Morning Tech Wrap: Facebook, Sprint, Google