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原文連結
論文資訊
- 類型：已發表論文
- 日期：2010
摘要
It has been known for decades that the metabolic rate of animals scales with body mass with an exponent that is almost always <1, 2/3, and often very close to 3/4. The 3/4 exponent emerges naturally from two models of resource distribution 網絡s, radial explosion and hierarchically branched, which incorporate a minimum of specific details. Both models show that the exponent is 2/3 if velocity of flow remains constant, but can attain a maximum value of 3/4 if velocity scales with its maximum exponent, 1/12. Quarter-power 縮放律 can arise even when there is no underlying 碎形ity. The canonical "fourth dimension" in 生物 縮放律 relations can result from matching the velocity of flow through the 網絡 to the linear dimension of the terminal "service volume" where resources are consumed. These models have bro
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