However, the traditional DEA methods do not get out of the trouble of randomness in determining the effective frontier.

然而，由于传统DEA方法在确定有效前沿面方面还没有走出随机性的困境。

youdao

During Daoguang and Xianfeng, Qin dynastys frontier danger was vulnerable to attack on all sides, the effective frontier policy began to fail.

道光咸丰时期，清王朝边疆危机四伏，原来行之有效的边疆政策开始走向破产。

youdao

Objective To prevent the spreading of water-born infectious diseases, do effective surveillance on their pathogeny in Zhujiang water at the frontier port area.

目的通过监测口岸辖区内珠江水中水源性传染病病源，有效地预防水源性传染病在国境口岸的传播。

youdao

For Holtzer, the next frontier after wringing out the cost-effective efficiencies is carbon neutrality.

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It will also mean an effective re-division of the land, making towns frontier towns again.

CNN: A wary welcome of peace in Israel - Sept. 27, 1995