Search Definition and 334 Threads

Hi All,' I remember there was a site where one could search using math symbols, like > , and Math terms. Anyone know what the name/address of that site is? Thanks.

Hi All! Haven't been here for some time, the changes are looking good! Anyway, formalities aside, I am having serious problems sourcing and implementing a suitable stainless steel (Grade: 304; thickness: 0.3mm) substrate for my etching process. I'm currently working on developing a...

Are we alone AND what are the ways we can search alien life?

Homework Statement Hello! Typical binary search tree has a number of nodes equal to 2^(n+1) - 1. I don't understand why we add 1 to the n? For example: a tree has a height 4. # # # # # # # # # # # # # # # each level has 2^i nodes; i = 0, 2^0...

Homework Statement Hello! Binary search requires O( log2(n) ) operations in the worst case. My math doesn't add up. I would be grateful for help. Homework Equations For example: Find number 8 in the set 1234578. The Attempt at a Solution The set contains n = 7 elements. 1) take the middle...

Here is essentially what I need to do for a school essay: I have an excel sheet with 200 points (x corresponding to A1 column values, y corresponding to B1 column values). I need to find a way to transfer this to a graphing program in quadrant 1 (all x,y coordinates are >= 1 and less than or...

SETI reborn—the new search for intelligent life A new influx of money has saved the Search for Extraterrestrial Intelligence (SETI) from collapse, but what does the future hold for our quest to discover intelligent life in the Universe? Continue reading...

This is bad news, but hopefully some other good corporate sponsor will pick up the ball... I've been to a couple of these STEM fairs in the past (as an observer), and the breadth and quality of many of the projects is truly amazing...

Dark matter particle candidates are being searched at CERN and the various dark matter models are being probed by cosmological simulations. The usual way to probe models via cosmology is to plug a candidate into a cosmological simulation and then compare the results with observations. Yet...

Hello everyone. I am looking for some free software to produce a Julia Set that would allow me to enter the equation. I would prefer it to be downloadable software, but if a web applications all there is that will do. It's preferable that a color scheme can be chosen, or at least used. Also, I...

Hello folks, I'm looking for a free programme to play with caustics/cusps. Does anyone know where I can find one? If not does anyone have any suggestions as to how to write a script for one in gfortran? Preferably all I'm after is a way to make quick plots of cusps in 2D. Cheers and thanks a...

Attempt at solution This is an old exam question. Am I correct to say the shortest path goes through M since M is in d(O,M) and d(D,M)? I don't know how to prove this and answer the question about the cost

I need to write a code that finds element x in a skip list. I need to implement that in O(logk) expected running time, where k is the location of x at the list (i.e., there are k-1 elements before x in the list). I know how to do it at o(logn), but not o(logk). can you show me the way? I need...

For some reason I managed to click on something that made the google search area on the toolbar disappear. How do I get it back? This is what it currently looks like: But I want it to look like this; Thanks!

1. Homework Statement I have to minimize the function (x1-1)2+x23+x1x2 by the steepest descent method. The initial point is [1,1]T Homework EquationsThe Attempt at a Solution The gradient of this function is ∇ƒ(x1,x2)=[2(x1-1)-x2 3x22-x1]. This...

Is it possible to search for a word on a document after I have sent it to my ti-nspire cx cas calculator?

So I am in my Intro to CS course and they are going over Binary searches via an algorithm to search for simple things. The code goes as this: Set first to 0 Set last to length-1 Set found to FALSE WHILE (first <= last AND NOT found) Set middle to (first+last)/2 IF...

I am looking for a good text at senior undergraduate level on Lie Theory, and in particular, Lie Groups ... Does anyone have any suggestions? Peter

I'm hoping for some help finding an alternative forum for this search. As a non-physicist pathologically curious about admittedly philosophical questions regarding physical concepts, I often come to PF for clarification of ideas that I'm chasing. Unfortunately, these ideas almost always boil...

Hi. When I make a search on Google, usually there are more pages in videos search than in web search? This situation bewilders me because, shouldn't web search comprise the video search. This shows that web search doesn't mean everything search in spite of my wrong belief. So what is the...

Just signed up to see if I could obtain any guidance on this topic. I'll start with some background. As a guitarist, I exist within a set group that, by and large, is in love with 1958 - the Gibson Les Paul, Fender Stratocaster, and some other influential late 50's and 60's instrument designs...

Hello all I am trying to draw a graph of a function. On the way, I wanted to see where the function meet the x axis, so I put y=0. It gave me this: \[x^{4}-4x^{3}+10=0\] How do I solve this equation ? Thanks ! I tried a "binary search" and got really close to the answer, but I guess there...

Draw a Binary Search Trees (BST) produced when data containing 30,40,50,60,10,20,55,15 is inserted one by one. Thanks.

Hello... how to write the function of depth first search? Thank you.

Greetings, A Thesis regarding the historical accuracy of portrayal Sadi Carnot and Lord Kelvin's work seeks a University. It is based largely on the images below (note highlighted areas), taken from their original work. As you know, Sadi Carnot and Lord Kelvin are the fathers of the science of...

Hello! (Wave) I want to apply the Depth-first search algorithm at the following graph. We consider that at the iteration of the algorithm, we look at the nodes alphabetically. Also the nodes are registered alphabetically in each list. I want to calculate the "discovery" time and the "finish"...

I am a bit frustrated with my current job search and I was wondering if people at PF could give some guidance. I am a doctoral graduate in Electrical Engineering from a low ranked university (~ 180 US News overall ranking). Although a EE doctorate most of my work was in materials...

I recently created a wordpress blog and am trying to find some friends on there. There doesn't appear to be any search option, so how do I find the blogs I'm looking for?

Hello! (Wave) Given a binary search tree $B$, I want to write an algorithm, that divides $B$ into two new trees $B_1, B_2$, so that the first one contains all the keys of $B$ that are smaller than $k$ and the second one contains all the keys of $B$ that are greater than $k$. Hint : Execute a...

Hello! (Wave) I want to show that the $T(n)$ of the following algorithm is equal to $O(\log n)$. How can we do it, now that we have if, else conditions? (Thinking) int BinarySearch(int A[1…n], int y, int low, int high) { if (high < low) { return -1; //not found } mid = low + (high -...

Can you explain me why search engines sometimes can not find existing entries. I can find them in the site, I can see them but Google and Bing can not find them. Best Regards.

Hello! (Wave) I want to apply the algorithm of the depth-first search at an example. Depthfirstsearch(G) for each v ∈ V color[v]<-white p[v]<-Ø time<-Ø for each u ∈ V if color[u]=white then Visit(u) Visit(u) color[u]<-gray time<-time+1...

Homework Statement Binary search trees In these problems you will set up a binary search tree and write some associated functions that make the search tree useful. Loading the data file students.mat (downloaded with this assignment) places a cell array called Students in the workspace...

Hello, I drew up this graph to try and understand the concept of depth-first search. Starting at node C, I was wondering if its correct for the order to be C-A-B-D or C-B-A-D? It seems like you can traverse in either direction without a problem.

Just got my physics BS, looking for any tips for job hunting and job titles that I could be qualified for. I've been running into constant walls trying to find jobs that I'm qualified for with just a Physics BS Any help would be greatly appreciated, and if anyone has tips for finance related...

Hello! First post here, so hopefully I'm not doing anything wrong. I've hit a dead end with an experiment and could use some additional perspective. I'm in need of material for a 100 mL round boiling flask that has good transparency down to about 140 -180 nm. I originally considered Type 214...

I have a hard time believing we only have the limited number of series I have seen so far especially considering how much broader mathematics is than I had thought just a short while ago. Where should I search to find more infinite series summations for the gamma function? For example which...

I'm fed up with google. It returns results that don't have all my keywords in it. Just now I searched for "Skyrim Playonlinux" and it returned several top results involving Skyrim Wine (wine as in drink, in the game), since Wine is related to playonlinux. What is a good search engine that...

Hi there, firstly I have to apologize if this is not the right section of the forum to post my question... Well, what I need is a more sophisticated Newton meter, to measure the force on the line. Let me describe the whole thing: I am a paragliding pilot and we use gliders that have lots...

I am trying to learn GRT so I can answer questions for myself. But I might croak first, so I’ll ask here. That gravity wave interferometer they are building out in Richland, Washington - I obviously haven’t read all the technical papers on their web site, but I am pretty sure one I did read...

There's a recent (released?) documentary called "Particle Fever" about the search for the Higgs boson. I'm not sure if it's been released yet. Has anyone seen it yet? Some info: Particle Fever editor Walter Murch: 'The Higgs boson is kind of a MacGuffin' David Kaplan Explains why the...

How many comparisons are performed to find 13 in the following list by using Binary Search? 7, 12, 5, 22, 13, 32 Is it true that there are 10 comparisons performed to find 13 in the following list by using Binary Search? If this isn't right, then can somebody please help explain this to me?

Hello all, Suppose I want to find all publications by X author. What is the best way to do this? I am overwhelmed by all the options out there. Also, how does it all work? What I mean by this is, when you publish something, say in Phys. Rev., does Web of Knowledge and Arxiv get automatically...

can anyone tell me the applications of radiation pressure? i have manged to find out one application i.e in solar sails but still my instructor is demanding more applications. i have also found an abstract of an article its about Adiabatic electron thermal pressure fluctuations in tokamak...

want some sites to teach me how to develop a simple web-based search engine that demonstrates the main features of a search engine (web crawling, indexing and ranking) and the interaction between them. Using Java :confused:

Hello everyone, I am wondering what your opinions are on going to graduate school if a job search isn't working out. While I would like to get a PhD, and always have, the fact of the matter is that I need money and cannot fund that type of commitment. The main problem with my resume is that it...

I'm somewhat awed by this paper: The emergence of complex behaviors through causal entropic forces. Now, I'm not a scientist or anything so bear with here: Shouldn't it be possible to use this approach to find solutions to Newton's equations such as solving the three-body-problem etc? And...

What is the reason for searching for exoplanets? i can think of many reasons why not, including we will never build a spacecraft to visit them, when we get there conditions for human life may not be suitable for human life, this would mean building a spacecraft that could return to earth, which...

Firstly, thank you all for creating this forum, thank you all for tolerating my questions. As an expert in another subject, I know it's not easy to take time out of one's schedule to answer the questions of non-experts, and I am grateful that you guys have. That said, this question is 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