Trees Definition and 101 Threads

Homework Statement Hi there, I was wondering if anyone out there was familiar with image classification algorithms. I have been creating histograms of pixel intensity distributions. For example, suppose I have 100 images of a tiger and 100 images of a lion. I create 100 histograms using...

Homework Statement Let G = (V,E) be a graph with vertices V and edge set E. Aldous-Broder algorithm: Input: G = (V,E) Output: T = (V, W), where W is a subset of E such that T is a spanning tree of G. Let W be the empty set. Add edges to W in the following manner: starting at any...

My neighbor recently visited Northern Canada on a hunting trip. He took a great many photos. Upon review, I noticed they have very tall and skinny pine trees with very full tops. He described the soil as very thin, perhaps less than 12", and solid rock below. Accordingly, I'm wondering if...

I mean, trees are a lot bigger than people, aren't they?

Hi everyone, Any help would be appreciated.

With the large "die-off" of tree recently as a result of draught, are there any plans/ideas in place to utilize natural photosynthisis and apply them to artificial trees to have the same results as the natural ones?

Homework Statement The costs (in millions of dollars) of connecting any two of the four cities A,B,C and D by telephone lines are given in the following matrix: 0 3 5 4 3 0 2 3 5 2 0 6 4 3 6 0 a) Draw a diagram of the complete graph b) find a minimal spanning tree The...

Hello, can anyone please help: Using the SML system to define a datatype for labeled 4-branch trees, the trees with possible zero, one, two, three or four branches. Label the nodes of the trees by integers, i.e., no polymorphic definition for this problem. (b) Draw a concrete 4-branch tree...

1. Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle ! with the trees. I believe the tension at either end of the rope is T=(mg)/(2cos(theta)) but I don't know how to solve the for the middle. The only way I can think of...

I have observed that increasing numbers of Americans seem ashamed of picking fruits from their fruit trees. Eventually all the peaches, apples, apricots, and other fruits fall to the ground. These fruits are delicious! But they go waste. This happens every year, year after year. People almost...

Why do dogs and other creatures wee (me included) around plants, trees and anything resembling a lamp-post? ... methinks there is some hard-wired behavioural jobs a-go-go here. If peeing on plants is an evolutionary survival trait ... one in which, said veg gets lashings of nutriment ...

Here's the question. Starting with an integer a≥2, we write on its left, below it, the number a+1, and on its right, below it, the number a^2, and obtain four numbers, to which we continue the process. We thus obtain a binary tree, whose root is a. Prove that the numbers in every line of the...

Phylogenetic trees - with all their scientific names? By now, I'm quite familiar with the scientific names for most animal classes and orders. I think that scientific names are still highly appropriate for classes or orders - people are more consistent with each other when they say "Squamata"...

http://www.cnn.com/2011/CRIME/02/17/alabama.auburn.trees/index.html?hpt=T2 So, apparently this Rhodes Scholar decided to poison priceless live oaks over a sports revelry. Because he told this radio show 2 MONTHS after using this extremely effective tree-killer, those trees are likely doomed...

Why does smoke from a campfire look blue against trees near the ground but yellow against the sky?

This image from Panoramio via Google Earth was pinned at Missoula, Montana. http://img816.imageshack.us/img816/5536/missoulamttrees1.jpg Any idea what the circled trees are? Original image: http://www.panoramio.com/photo/11198333

What more can I say about this picture? Man, I suppose YP makes a lot money with those numbers in the book. Anyway. I find YP useful when I need that to explain the friction and Newton's second law. ... LOL

During our trip through the northern Europe I have seen something that I don't understand. I was always under impression, that in a harsh climate - that is up in the mountains, or up North - coniferous trees are those best suited to live in the place and hence they should dominate the landscape...

I have been given a practice exam from my professor (http://www.cs.pitt.edu/~aronis/cs0445/miscellaneous/cs445-spring-2007-test-3.pdf ) along with an answer sheet (http://www.cs.pitt.edu/~aronis/cs0445/miscellaneous/cs445-spring-2007-test-3-answers.txt ) and there are a good number of questions...

This is basically a good news story. Aspen trees (I call them populars) are doing just about everything they can to soak up as much CO2 as a tree can. While CO2 levels have risen about 19% over the last 50 years, Aspen trees have accelerated their growth rate even more so; 53%! That is...

If a planet had red and pink plants and vegitation what kind of athmosphere would it have.If it had a purple sky and it was 112 million miles from a blue sun what kind of athmosphere would create yellow transparent water instead of green or blue.

I am a horticulturist not a physicist, hence the reason I am seeking your help. I am currently drilling holes in a certain species of tree using a regular electric drill. (I do this to insert a special treatment - to explain why I do this would take many more words!). The density of the...

Homework Statement A uniform rope of weight W hangs between two trees. The ends of the rope are the same height, and each make angle \theta with the trees (the angle is between the rope and the lower part of the tree). Find the tension at either end of the rope. Homework Equations...

Three years ago, I spend some days on the Swiss Alps. All the glaciers we visited were in clear recession. Ok, this is a global issue. But I was suprised by a little detail in the Ferpècle Glacier, in the Évolène valley, near Sion, Switzerland. There were several trees on the river bed...

Homework Statement Take an n-cycle and connect two of its nodes at distance 2 by an edge. Find the number of spanning trees in this graph. Homework Equations n^(n-2)? The Attempt at a Solution I honestly have no idea on how to start this problem. I know the definition of an...

Tidal force in the sci-fi book "The Integral Trees" Hi I'm doing an eksamen exercise for tomorrow about the science fiction book "The Inetgral Trees" by Larry Niven and tidal forces. One of the quiestions are if it is realistic with a tidal force at 1/5g (little italic g - g-force, not gram)...

i got this code http://img66.imageshack.us/my.php?image=93367399de7.gif i know linked lists a little but in this code there are some arrows i can't understand what is their meaning?? is there any tutorial for these arrows thing?

Graph problem! Proove that: If we have a matrix |e11 e12 ... e1n| |e21 e22 ... e2n| | ..... | |en1 en2 ... enn| (eij edges of a graph G) where every row is a spanning tree of G then there is a recomposition of every row so that the columns are also spanning trees of G.

I have a few general questions regarding organizations in which tries to preserve trees around the world. What do they actually do to try and preserve these trees? The reason I am asking this is because I have family in small a country that owns timber company. That cuts down trees, however...

Since rising CO2 levels are the problem and trees take in CO2 while giving off oxygen, wouldn't growing a vast amount of trees solve Global Warming at a significant level or am I missing another element here?

This is in no way a suggestion; I'm just curious. Please read on. A friend of mine has a house that is heated by burning wood. I won't give his entire story, but he did include that burning wood for heat is significantly cheaper than burning natural gas, which makes it way way cheaper than...

http://www.cnn.com/2006/US/12/10/airport.christmas.trees.ap/index.html?eref=rss_topstories

Kodama means "echo" or "spirit of the trees" I just thought you might like to know :smile: AFAIK the Kodama state was first written in 1988 by Hideo Kodama It seems the Japanese have what they call "clans" and there is a Kodama clan. There have been other famous Kodamas besides Hideo...

I'm trying to write an address book that is based on a binary tree. I'm devloping in Visual C++ (I blew up my Ubuntu with the new dist), starting with the basics: #ifndef binarySearchTree_h #define binarySearchTree_h #include <string> #include <iostream> using namespace std...

Coniferous is to Conifer as Deciduous is to ?

I'm using the definition of a full binary tree which is a graph where there is exactly one path between any two vertices, there is a root, and where every vertex has either two children or none at all. If I had the following graph: * that is, just the root, then could I construct the...

In chapter five of Douglas Hofstadter's book Goedel, Escher, Bach, the author poses a question about recursively-defined trees: I've been trying to solve it today, and the only solution I came up with is: G(n) = (n+1) - G(G(n-1)+1) for n>4 G(O) = 0, G(1) = 1, G(2) = 2, G(3) = 3, G(4) = 3...

Out of 12 letters i had today only one was of any interest, a letter from my credit card company that informed me that owe i them nothing, the rest was junk mail, if you averaged all the junk mail sent in the UK how many trees would that equal?

To me, this is the funniest news story of the year... http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2006/02/16/MNGUNH9P9A6.DTL http://www.dailybruin.ucla.edu/DB/issues/97/10.31/images/mascot.Stanford.jpg

I'm trying to create this program that allows the user to create and manipulate trees. For example, a user might create a new tree with a node containing "words" as its data, then create nodes containing "nouns", "verbs", "adjectives", etc. as their data. The problem is I don't know how to...

How do we find information on how to modify a binary Search tree to that of a juggle tree. SUch as add, delete, treaverse etc. Somehow all can be done with a call to the recursive function juggle. basics of a juggle tree given a binary tree will have two nodes left and right, and another to...

From Trees to Loops and Back Andreas Brandhuber, Bill Spence, Gabriele Travaglini 49 pages, 17 figures http://www.arxiv.org/abs/hep-th/0510253 We argue that generic one-loop scattering amplitudes in supersymmetric Yang-Mills theories can be computed equivalently with MHV diagrams or with...

In my food and culture/biology class, our teacher played an audio file about untapped maple trees exploding, but after it was over, she told us it was an April Fool's prank. However, I am curious to know. Why don't untapped maple trees explode?

1. Describe the elements of the groups c2mm, p4mm, and p3m1. My book doesn't do a good job of explaining this notation, any help? 2. Let m and n be positive integers. Prove that there is a homomorphism from the free group generated by n generators, F_n, onto the free group generated by m...

Hi Lets say you have a 100' tree and you have the pull line going through a fork up the top. You have 2 options of where to tie it ... A/ Tie to the top fork (running bowline etc) B/ Tie off on trunk at base My question is, is it the same? Before you answer please consider that...

the physics of biology How does a tree get tons of water from bottom to top?

Is there a library in java I can use to make AVL trees. See we have this project where we have to store students in a Binary search tree and then have access to their stuff... anyway is there a structure I can just import to be able to use it... or do I have to implement my own generic tree?[

Do you know of any (philosophical) stories about trees and flowers ? Actually, anyone is fine... It is not really necessary to be a philosophical one but can be of any types from fictions to non-fictions, anything interesting is all within my main interest... Thanks so very much for your...

Does anybody know about any conventions for the ages at which trees of different species can be cut? does it vary by country or is there any international agreement on it?

I am, for some reason, unable to post in the "earth" board, so here I am. How many trees does it take to provide enough oxygen for one human? How large would these trees be?