A study by Susan Redline and colleagues at Case Western Reserve University school of Medicine showed an inverse correlation between sleep duration and obesity in high-school-age students.

由凯斯-西部保留地大学医学院的苏珊·雷德兰及其同事进行的一项研究显示，高中生的睡眠时间与肥胖程度呈反比。

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All this amounts to around 30% of the cost of construction, according to a case study on Living PlanIT by the Harvard Business School.

这一切，根据哈佛商学院针对Living PlanIT所作的一项个案研究数据，占到了建筑成本的大约30%。

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"In terms of a business school case study, you definitely think of that, and I think that decisions around eventually putting manufacturing here solved part of that equation," Mr. Rosenzweig said.

Rosenzweig先生说：“从商学院案例研究的角度出发，你肯定可以认为，并且我认为，最终决定将生产过程放在这里，部分解决了综合平衡的问题。”

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Reinhardt co-authored a Harvard Business School case study of Patagonia in 2010.

WSJ: Patagonia's Founder is America's Most Unlikely Business Guru

Aravind's innovative approach, the subject of a Harvard Business School case study, has earned it admirers around the world.

FORBES: Companies, People, Ideas

Harvard Business School has produced a case study of the dabbawalas, urging its students to learn from the organisation, which relies entirely on human endeavour and employs no technology.

ECONOMIST: Management trends