نتایج جستجو برای: allometric model

تعداد نتایج: 2106866  

2017
James A. Lutz John R. Matchett Leland W. Tarnay Douglas F. Smith Kendall M. L. Becker Tucker J. Furniss Matthew L. Brooks

Fire is one of the principal agents changing forest carbon stocks and landscape level distributions of carbon, but few studies have addressed how accurate carbon accounting of fire-killed trees is or can be. We used a large number of forested plots (1646), detailed selection of species-specific and location-specific allometric equations, vegetation type maps with high levels of accuracy, and Mo...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Shigeta Mori Keiko Yamaji Atsushi Ishida Stanislav G Prokushkin Oxana V Masyagina Akio Hagihara A T M Rafiqul Hoque Rempei Suwa Akira Osawa Tomohiro Nishizono Tatsushiro Ueda Masaru Kinjo Tsuyoshi Miyagi Takuya Kajimoto Takayoshi Koike Yojiro Matsuura Takeshi Toma Olga A Zyryanova Anatoly P Abaimov Yoshio Awaya Masatake G Araki Tatsuro Kawasaki Yukihiro Chiba Marjnah Umari

The scaling of respiratory metabolism with body mass is one of the most pervasive phenomena in biology. Using a single allometric equation to characterize empirical scaling relationships and to evaluate alternative hypotheses about mechanisms has been controversial. We developed a method to directly measure respiration of 271 whole plants, spanning nine orders of magnitude in body mass, from sm...

2012

Department of Animal Science,Faculty of Agriculture,University of Uyo, Uyo, Akwa Ibom State, Nigeria A total of 40 New Zealand white rabbits were used in a study where prediction models were developed for predicting live weight and evaluating the carcass. In the study, six body measurements namely, body length, thigh circumference, shank length, chest width, body circumference and girth were de...

2001
KARIN ISLER A. D. BARBOUR ROBERT D. MARTIN

The choice of an appropriate method for fitting a straight line to data is one of the major procedural problems in bivariate allometric analysis. Commonly used techniques, such as ordinary least-squares regression and major axis, are derived from the general structural relationship model and thus require some knowledge about the distribution of the data. In this paper, we explore a nonparametri...

Journal: :J. Systems Science & Complexity 2009
Jiang Zhang

Energy flow drives the complex systems to evolve. The allometric scaling as the universal energy flow pattern has been found in different scales of ecological systems. It reflects the general power law relationship between flow and store. The underlying mechanisms of energy flow patterns are explained as the branching transportation networks which can be regarded as the result of systematic opt...

Journal: :New Journal of Physics 2013

Journal: :Scientific Reports 2017

Journal: :JOURNAL OF TROPICAL FOREST SECIENCE 2017

Journal: :Physica A: Statistical Mechanics and its Applications 2010

2011
Zhengang Zhao Qian Guo Changpin Li

From the available literature, the allometric scaling laws generally exist in biology, ecology, etc. These scaling laws obey power law distributions. A possibly better approach to characterize the power law is to utilize fractional derivatives. In this paper, we establish a fractional differential equation model for this allometry by using the Caputo fractional derivatives.

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