Search Definition and 351 Threads

Homework Statement I need to prove that different insertion orders of the same keys always gives us a different binary tree. Homework Equations All obvious BST properties apply: The left subtree of a node contains only nodes with keys less than the node's key. The right subtree of a...

Hi all, I am in a search for a material that is transparent in UV wavelengths, but reflect light in the visible wavelength (e.g. the opposite of standard glass). does anyone here know of such a material? Thank's in advance

I had the pleasure of using and seeing the schematic of a two stage magnetic amplifier that was used to control the magnetic field of a large electromagnet, during my graduate work in superconductivity at the University of New Orleans. It had a large DC gain and with a resistor for feedback...

This paper - http://arxiv.org/abs/1211.3816 - by Beckenstein is fascinating. I would like to know if the experimental test proposal is realistic.

Hi, new to the forum, it is a really spiffy place. I'm not really much of a programmer, but I have an interest in it and kind of like to piddle around with programming. I am learning C and C++ mostly by doing, browsing books, and asking dumb questions of people who know a lot more about it than...

I have / had windows live search as my default search provider for internet explorer (live serach was auto-selected when I installed the OS onto this computer). It seems that live search is no longer working and ends up going to my ISP provider search as error recovery. I did a web search for...

Hi there, I am going thru basics of optimization and I see line search being used in many sophisticated optimization algorithms. From what I understand, it works by taking the derivative at a point and moves in a direction that minimizes the function. I have earlier experience using...

Why? As I understand it General Relativity states that gravity is the warping of space-time, so it seems a reasonable assumption that as a consequence of this that gravity does not require a force carrying particle as the strong and electroweak forces do. Are there theories being explored...

We have many engines to search the literature, such as sciencedirect and so on. And we also have google scholar to search the whole literature. Is it a good idea to use only google scholar since it looks complete enough? What's your opinion?

hi i have two data sets one(data1) containing 3 8 2 1 5 7 9 9 2 2 5 7 7 10 3 6 6 6 6 and other(data2) containing 5 1 10 5 20 7 30 6 40 9 50 now i want my program to search the values 1 5 7 9 from (data1) in data 2 column 1 and then take the average of the...

Sometimes folks at forum venture the opinion that Quantum Geometry (=gravity) effects cannot be seen except at prohibitively high energies, leading them to conclude that QG research cannot reasonably expect guidance from experiment and observation. Generally speaking I think this is...

Dear all, I am facing an annoying problem with Google search and despite spending tens of hours in the net, I can't find the solution. I hope someone can help me out. The problem is that Google search has become is very slow and most of the time it doesn't return results or and remains in a...

Hello, this is sort of a big program and I wrote out the program, but I'm unsure about a lot of things. The program is supposed to give the user a menu of choices: 1) Fill the array with random numbers. 2) Print the array. 3) Search the array. 4) Sort the array. 5) Quit. Option one is...

Hi everyone, I am trying to solve an optimization problem using fmincon in Matlab with a nonlinear inequality restriction. Part of the objective function is undefined if this nonlinear inequality is violated. I also set up lower and upper bounds for fmincon. I use the "interior-point"...

So we have been struggling to defeat the google image searcher. This seems to work While we see what it is, google didn't have any idea. I made this with googles Picasa-3. It's very simple with a few clicks, I selected pencil drawing and then some other tricks, changing colors and...

Wasn't sure about where else to post this so I posted it here : I got into an argument with my friend about google search being a DBMS, I disagreed because it doesn't fit the definition that we were given or the one on wikipedia and a few more websites. All that google search does it query a...

It appears that the US government has determined that Google is perhaps too successful, or that in being successful in it's market has abused it's power/influence. U.S. Escalates Google Case by Hiring Noted Outside Lawyer...

Homework Statement A company has a number of employees whose records, for simplicity, contain: Employee number Employee name Write separate programs, each of which searches for a key whose value is to be input, using the sequential search variations given below. Let...

Homework Statement Given a binary search tree that contains n nodes with keys 1, 2, 3, ... , n. In what order should the keys be inserted into the binary search tree to obtain a tree with minimal height? Homework Equations Binary search tree algorithm. The Attempt at a Solution...

I am a Junior in high school and am just starting the college search. I have always wanted to so something with space, and be an astronaut if I could, but, as astronauts take up such a small percentage of any group of people, I have begun to look for other things. Something that has caught my...

Hello Physics Forums! I've just read about the discovery of GJ 667Cc, and it made me ponder on how do astonomers develop the sequence of stars to be examined in search for exoplanets? I know that some telescopes, like Kepler mission, are just collecting raw data from a certain area of space...

For reference I haven't read the book yet, it's next after I finish Emanuel Derman's book. A brief history: I received my BS in Kinesiology, basically a worthless degree where a MS is required to do anything remotely significant. Shortly after graduating I realized I had no job prospects and...

Hi everyone! I'm Filippo, I'm 15 years old and I'm from Milan (Italy). I'm sophomore (10th grade) in a scientific high school (italian scholastic system is different from the US one) and my dream is to attend MIT after graduate. Now I'm spending my soph and jun years in Italy but the senior...

I'm going to finish my undergrad in about 3 semesters, and I've come to realize through school and internships that if I have to do any programmming for a full-time job upon graduation, I will go insane. So my question is this, and the answer may be a simple 'no, that's ridiculous'. Are there...

Q.When run the program should ask for an input file containing integer keys to be added to the search tree. The file will contain one key per line. Add these keys in the order given in the file to the search tree. Then print the entire tree using preorder traversal i.e., root, left-child...

I am currently an eleventh grade student attending high school and I must say, I have the worst Physics teacher at my school. It is very very hard to keep up with her and such. I am in look for a book that will help me understand the problems in greater depth. At the moment I am completely lost...

Do you believe in the news that by December if no Higgs were found. It is like there are really no Higgs because the search windows have been narrowed down already to no more gap by December 31? If there were no Higgs. What other tests or results can the LHC design to see that can explain...

Here is their http://en.wikipedia.org/wiki/ResearchGate" , note the section I highlighted below: It appears this http://www.researchgate.net/" is young (2010) has roots in Berlin, Germany and Cambridge, Massachusetts. Is anyone here using it ? If so is the search engine everything they claim...

Hello everybody I have a mass production project for a new product . The thing is to be made in foam , sheets...it is some material involved . To visualize the idea think about the Yoga mat sort of material but much thick.. Natural or Synthetic ?..provided there is to be found a natural...

so when someone googles my name some embarrassing posts come up on a forum I post on, since one of the members figured out my name and posted my name on the forum. The guys that run the forum are jerks and will probably just make it worse if they found out that I was bothered by it (suck I...

Google image search is the best place when searching for images on something. But I have always thought, "What if I have an image and I need to find out what it is about." Shazam works well for audio, but Google has finally done it with images. I noticed a week ago that you could drop images in...

i found the recursive relation which is T(n) = 1 + t(n/2) after a couple of substitutions i found the pattern which is T(n) = 2i-1 + T(n/ 2i) i chose i = log2 n and then when i plugged it in i got T(n) - 2log2(n -1) + T(1) but doesn't the first part simplify to n-1? the complexity...

I have a basic understanding of Grover's algorithm, and I do know it searches through an unstructured database for some value. I recently downloaded the Quantum Processing Simulation (QPS), and after trying out the Grover simulator I became confused: through what database is it searching? It...

I have written a computer program that uses binary search to find the root to f(x) = 0, where f is an arbitrary (user-defined) function. If the rounding error \leq \epsilon and the truncation error \leq \delta, what is the estimated accuracy of the output? Would the following reasoning be...

Hi, so as many of you who are in 3rd year or so know, the PGRE is coming this October and November.. exciting times.. So from what I have heard, there are barely any exclusively PGRE-prep books.. Hence I look forward to some input on what kind of books (in general) that would be a good idea...

On the website http://stackoverflow.com/questions/504335/what-are-the-pitfalls-in-implementing-binary-search, it states that the Pascal code (note that in Pascal, the array indexing starts with 1) PROCEDURE BinarySearch (A : anArray, Size : anArraySize...

You must have heard (and tried) the new (still new?) google hands free (voice dictated) search feature. But It don't work for me. I haven't been able to make it understand even a single word till now. what about u?

Hi all, Was told by an engineer at a tech startup to inquire here for anyone interested in discussing/solving/working on this problem. Basically, I am looking to crawl and index all images on a certain part of the web (yet undefined which part) and to be able to run a reverse image search...

I did a search and couldn't find a/the thread so I will post here. Your thoughts https://www.youtube.com/watch?v=p92QfWOw88I From what I've seen I think i'll stick with 7.

It is in my desktop now, every time I click a google search result, I got redirected to some unknown websites (the same thing happen with IE, Firefox and Chrome). I use AVG at home, did several whole computer scan, it couldn't find anything wrong. However, if I am connected to the internet...

Hello, I'm a French scientific programmer with a PhD in Nuclear Physics. During and after my PhD, I worked and still work at a French national laboratory on nuclear energy working on scientific software. I'm moving to the U.S. in a few months for my American wife's career in Northern...

I am looking for something on the lines of this - http://www.tineye.com/ . i.e a site where one uploads an image and it gives back similar images from other websites. (note - I am not asking for face recognition or similar thing , that I guess would be a big demand . I just wanted to find...

I got a quick question, let's say I have an array of numbers for example [ 9 3 2 7 1 8 ] and I want to find the minimum value ie: for this example it would be 1. How could I implement an optimization search like this??

I love entering a question in google and having PF pop up on the first page. Like I did earlier with a "what are the waste products of fusion" and getting the link to: https://www.physicsforums.com/showthread.php?t=121166&page=2 :-p

XENON 100 published today the results from a 100-day run, significantly tightening the constraint on WIMP spin-independent cross-sections. It seems that they are beginning to probe interesting parameter spaces. http://arxiv.org/abs/1104.2549

Hi i'm looking for a ferrite bead that will block 1-20 Mhz frequancies and pass all lower ones is it possible ? can someone to advice me for one specific? Arye

I have noticed with growing frequency that many things posted on PF come up when doing tangential searches for other information with increasing frequency. I am not complaining, this is a great thing and Greg and all the staff at PF should be proud. An example...

Homework Statement The question is to provide a new composite heuristic h3 that is admissible and dominates h1 and h2. Then show the cost of each of the states through H according to h3. Homework Equations States: A B C D E F G H h1: 10,12,12,6,7,7,2,10 h2: 8, 9, 14,4,9,7,1,9...

that is too sad it have been 2 days and i coudnt find out where do i make mistake. i wanted to prove:" (f(x)*g(x))'= g(x)*f(x)'+ g(x)'*f(x)". so: (f(x)*g(x))'= lim h→0 ((f(x+h)*g(x+h)-f(x)*g(x))/h) =lim h→0 ((f(x+h)*g(x+h))/h) - lim h→0 (f(x)*g(x))/h) =[lim h→0 ((f(x+h))/h)*lim h→0...

recently i lost all my data in my computer can anyone help me to find a file on the net file containing all the s-t v-t a-t graph relationship and also content about kinematics such as projectile motion on inclined plane ... also with problem exercises thanks