极度尴尬正在参加美赛

楼主

下載伱的愛 [离线]

6VIP

发帖数:67 积分:3809
11楼

阿博有思路一定要和我分享下

      
签名档

微笑,不代表我快乐。哭泣,不代表我懦弱。低头,不代表我胆怯。平静,不代表我心安理得。失败,不代表我不再也站不起来。沉默,不代表我什么都不想说。 夲资料由[QQ⊿留意罒]独家赞助 [老敲]罒友情客串

发表于 2012/9/18 21:47:38

紫馨儿 [离线]

6VIP

发帖数:175 积分:3183
12楼

原题如下


PROBLEM A: The Leaves of a Tree
"How much do the leaves on a tree weigh?" How might one estimate the actual weight of the leaves (or for that matter any other parts of the tree)? How might one classify leaves? Build a mathematical model to describe and classify leaves. Consider and answer the following:
? Why do leaves have the various shapes that they have?
? Do the shapes “minimize” overlapping individual shadows that are cast, so as to maximize exposure? Does the distribution of leaves within the “volume” of the tree and its branches effect the shape?
? Speaking of profiles, is leaf shape (general characteristics) related to tree profile/branching structure?
? How would you estimate the leaf mass of a tree? Is there a correlation between the leaf mass and the size characteristics of the tree (height, mass, volume defined by the profile)?
In addition to your one page summary sheet prepare a one page letter to an editor of a scientific journal outlining your key findings.

      
发表于 2012/9/19 0:41:13

only4me [离线]

6VIP

发帖数:146 积分:3291
13楼

我用了....logistic模型

不管了...先搞起来了 思路有一点 数据比较难找

      
签名档

很高兴来到 杭州的bbs 哈哈

发表于 2012/9/19 0:15:35
返回本版
1
2

请您先 登录 再进行发帖

快速回复楼主