EZgnuplot.pm
対応にぜんぶ書き直した.
これですっきり.
Lavigne & Ryan. 1997. Growth and maintenance respiration rates of aspen, black spruce and jack pine stems at northern and sourthern BOREAS sites. Tree Physiology 17: 543-551.これによると, 成長呼吸のみならず維持呼吸までが相対成長速度 (嗚呼,呪われ割り算値) の増加関数になってるようで. 関数のパラメーターの推定において 割り算値があちこちに入っててかなり怪しいんだけど, このへんは時間あるときにでも 自分で解析しなおすことができるだろう. というのも BOREAS (Boreal Ecosystem-Atmosphere Study) なるプロジェクトでは元データをネット上で公開してくれてるようなんで.
1 - exp(-c * x)
な関数型を使っているが,
変化がもっときついやつのほうがいいのかもしれない.
Andrei Nikolaevich Kolmogorov belonged to a select group of people who left one with the feeling of having touched someone unusual, someone great and extraordinary, the feeling of having met a wonder. Everything about Kolmogorov was unusual: his entire life, his school and college years, his pioneering discoveries in ... mathematics ... meteorology, hydrodynamics, history, linguistics and pedagogy. His interests were unusually diverse, including music, architecture, poetry, and travel. His erudition was unusual; it seemed as if he had an educated opinion about everything ... One's feeling after meeting Kolmogorov, after a simple conversation with him, [was] unusual. One sensed that he had a continuously intensive brain activity.
TerminalAdjuster
を作り変える.
いままでは,
呪われアロメトリーで何もかも決まっていたから,
bud_cache に資源→シュート形状を覚えさせていたんだけど,
これができなくなったんで Newton 法で毎回毎回計算させることに
……
これがじつに莫大なかんぢの計算なんだけど,
やはり明るさ計算に比べたらぜんぜんたいしたことなかった.
Kolmogorov belongs to a group of mathematicians whose every single work in any area leads to a complete reevaluation. It is difficult to find a mathematician in recent years with not only such broad interests, but also such an influence on mathematics ... Hardy [a prominent British mathematician] took him for a specialist in trigonometric series, and von Karman [a post-World War II German physicist] took him for a specialist in mechanics. Gödel [a mathematical philosophical theoretician] once said that the gist of human genius is the longevity of one's youth. Youth has several traits, one of which is excitement. Excitement with mathematics is one of the features of Kolmogorov's genius. Kolmogorov's excitement is in his creative work, in his articles in the Large Soviet Encyclopedia, in his development of the Ph.D. program. And this is just one side of him. The other is dedicated labor.
PipeTree
内の水ポテンシャル計算がヘンなのと,
あとは下の図のようにアイデアがそもそもよくわからん,
という相乗効果で.
PipeTree
では「葉面積」も「葉の厚さ」も明確に定義しようがないのだ.
葉の重さとカタチが与えられてるだけ.
Magnani, E., M. Mencuccini & J. Grace. 2000. Age-related decline in stand productivity: the role of structural acclimation under hydraulic cnstraints. Plant Cell. Env. 23: 251-263.ってのはなかなかお作法の勉強になる.