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Comparing ratios to the Golden Ratio
June 8th 2013, 03:23 AM #1
Jun 2013
Comparing ratios to the Golden Ratio
Hi all,
I'm currently trying to write an equation or piece of logic which will allow me to test ratios against the Golden Ratio to find the closest match. The ratios I need to test range from 1:255 ... | {"url":"http://mathhelpforum.com/calculus/219660-comparing-ratios-golden-ratio.html","timestamp":"2014-04-21T03:19:22Z","content_type":null,"content_length":"34642","record_id":"<urn:uuid:03f822e6-475b-407b-8ded-f555dbaa358c>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00423-ip-10-1... |
Volume of a Cylinder - The Basics and Examples
If we have a cylinder with the radius
and height
, the volume,
of the cylinder is:
V = πr^2h
is a number that is approximately equals to 3.14.
The math video below will give more explanation about this formula. Also, we will see some examples on how to use it. | {"url":"http://www.mathexpression.com/volume-of-a-cylinder.html","timestamp":"2014-04-18T11:09:11Z","content_type":null,"content_length":"49398","record_id":"<urn:uuid:30635331-80f1-4039-9649-6bfc1c675ba8>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00168-ip-10-147-4-33.ec2.interna... |
Celebrating Pi Day
A mathematical formula discovered a decade ago in part by David H. Bailey (above), the Chief Technologist of the Computational Research Department at the Lawrence Berkeley National Laboratory, was
the basis for researchers to find the sixty-trillionth binary digit of Pi-squared. | Photo Courtesy of L... | {"url":"http://energy.gov/articles/celebrating-pi-day","timestamp":"2014-04-17T14:23:41Z","content_type":null,"content_length":"62540","record_id":"<urn:uuid:30c2cf0e-1680-43fc-8482-3b61eb1434b5>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-20140416005210-00061-ip-10-147-4-33.ec2.internal.warc.gz"... |
Results 1 - 10 of 31
- In 42nd FOCS , 2001
"... The simulation paradigm is central to cryptography. A simulator is an algorithm that tries to simulate the interaction of the adversary with an honest party, without knowing the private input of
this honest party. Almost all known simulators use the adversary’s algorithm ... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=521037","timestamp":"2014-04-17T16:56:26Z","content_type":null,"content_length":"36043","record_id":"<urn:uuid:ad2bc105-eabe-4768-bb5e-4e2cacf84f51>","cc-path":"CC-MAIN-2014-15/segments/1397609530136.5/warc/CC-MAIN-20140416005210-00143-ip-10-147-4-33.ec2.internal.warc... |
Godfrey Harold Hardy
G. H. Hardy attended Cranleigh school up to the age of 12 with great success, but he did not appear to have the passion for mathematics that many mathematicians experience when young. He won a
scholarship to Winchester College in 1889, entering the College the following year. Like all public school... | {"url":"http://www2.stetson.edu/~efriedma/periodictable/html/Ho.html","timestamp":"2014-04-21T02:32:34Z","content_type":null,"content_length":"4956","record_id":"<urn:uuid:21e75d96-2117-470c-a3a6-cdf9925fed8c>","cc-path":"CC-MAIN-2014-15/segments/1397609539447.23/warc/CC-MAIN-20140416005219-00327-ip-10-147-4-33.ec2.int... |
Sum and product rule of measures
So P[i] are sets??
Then how did you define Sum P[i] and Prod P[i]??
OK. I wanted to leave even that part open in case there are particular definitions of Sum and Prod for which the measure distributes inside the Sum or the Prod. But initially my first guess is that
Sum is defined as tra... | {"url":"http://www.physicsforums.com/showthread.php?p=3778524","timestamp":"2014-04-20T03:25:02Z","content_type":null,"content_length":"37960","record_id":"<urn:uuid:7b916ebb-f3cf-4c7e-ad0b-10a8715f87e0>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-20140423032011-00442-ip-10-147-4-33.ec2.internal.... |
Texas Instruments TI-83
The equation y=ax²+bx+c is a mathematical representation of all parabolas with the axis of symmetry parallel to the y-axis. To select a particular parabola from the set as a whole, the parameters a,
b and c need to get the matching numerical values. So, if the program Parabola has to examine an ... | {"url":"http://home.hccnet.nl/tenhorn/parabola-TI.htm","timestamp":"2014-04-18T21:20:36Z","content_type":null,"content_length":"11735","record_id":"<urn:uuid:ed62fde7-360a-4c32-8446-5feb3da80a10>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00286-ip-10-147-4-33.ec2.internal.warc.gz"... |
How to Perform Basic Calculations in Excel Spreadsheets
This Series of Excel Articles and Tutorials will teach you the fundamentals of using formulas and functions to perform basic calculations in Excel spreadsheets.
are one of the most useful features of the program. Formulas can be as simple as adding two numbers or ... | {"url":"http://spreadsheets.about.com/od/excel101/a/frmla_funct_hub.htm","timestamp":"2014-04-18T00:12:59Z","content_type":null,"content_length":"42611","record_id":"<urn:uuid:db32df31-23a4-438f-92b5-b390497ff8cd>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00643-ip-10-147-4-33.ec2.... |
An Overview of Recent Research Results and Future Research Avenues Using Simulation Studies in Project Management
ISRN Computational Mathematics
Volume 2013 (2013), Article ID 513549, 19 pages
Review Article
An Overview of Recent Research Results and Future Research Avenues Using Simulation Studies in Project Managemen... | {"url":"http://www.hindawi.com/journals/isrn.computational.mathematics/2013/513549/","timestamp":"2014-04-18T06:19:11Z","content_type":null,"content_length":"187342","record_id":"<urn:uuid:34a9ffc0-f127-48db-804e-3eb5821f567a>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00615-ip-10... |
Some cute examples of computability theory applied to specific problems.
1. We now know that, if an alien with enormous computational powers came to Earth, it could prove to us whether White or Black has the winning strategy in chess. To be convinced of the
proof, we would not have to trust the ali... | {"url":"http://intothecontinuum.tumblr.com/tagged/Scott-Aaronson","timestamp":"2014-04-19T14:28:43Z","content_type":null,"content_length":"45617","record_id":"<urn:uuid:bccc8364-be71-4243-a7f0-02d7cc32a00a>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00538-ip-10-147-4-33.ec2.interna... |
Computation of the regular continued fraction for Euler’s constant
"... We consider Ramanujan's contribution to formulas for Euler's constant fl. For example, in his second notebook Ramanujan states that (in modern notation) 1 X k=1 (\Gamma1) k\Gamma1 nk ` x k k! '
n = ln x + fl + o(1) as x ! 1. This is known to be cor... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=774896","timestamp":"2014-04-18T00:50:37Z","content_type":null,"content_length":"25226","record_id":"<urn:uuid:369f26f5-9a1e-4eb7-b15d-63925b003b0f>","cc-path":"CC-MAIN-2014-15/segments/1397609532374.24/warc/CC-MAIN-20140416005212-00104-ip-10-147-4-33.ec2.internal.war... |
Alt-Ergo @ OCamlPro: Two months later
As announced in a previous post, I joined OCamlPro at the beginning of September and I started working on Alt-Ergo. Here is a report presenting the tool and the work we have done during the two last
Alt-Ergo at a Glance
Alt-Ergo is an open source automatic theorem prover based on S... | {"url":"http://www.ocamlpro.com/blog/2013/10/22/alt-ergo-evaluation-october-2013.html","timestamp":"2014-04-18T22:17:27Z","content_type":null,"content_length":"27728","record_id":"<urn:uuid:72a2caac-5cca-4efd-b912-6f7a04a7adc2>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.9/warc/CC-MAIN-20140416005215-00043-ip-10... |
Homework Help
Posted by Allison A on Monday, November 28, 2011 at 7:11pm.
find the vertex line of symmetry the minimum naximum value of the quadratic function and graph the function f(x)=-2x^2+2x+2.
• Math - Steve, Monday, November 28, 2011 at 7:25pm
A parabola has either a minimum or a maximum, but not both.
... | {"url":"http://www.jiskha.com/display.cgi?id=1322525489","timestamp":"2014-04-21T07:54:38Z","content_type":null,"content_length":"9842","record_id":"<urn:uuid:fc7b02b9-0ed9-4e85-b1c6-f1a56961216c>","cc-path":"CC-MAIN-2014-15/segments/1398223204388.12/warc/CC-MAIN-20140423032004-00055-ip-10-147-4-33.ec2.internal.warc.gz... |
stupid, simple question on using accuracy / estimated error value
stupid, simple question on using accuracy / estimated error value - NTP
This is a discussion on stupid, simple question on using accuracy / estimated error value - NTP ; I would think that the estimated error value from, say, ntptime describes the error ... | {"url":"http://fixunix.com/ntp/67748-stupid-simple-question-using-accuracy-estimated-error-value.html","timestamp":"2014-04-17T12:56:06Z","content_type":null,"content_length":"23858","record_id":"<urn:uuid:92256754-0822-4226-914a-4b15ff49643f>","cc-path":"CC-MAIN-2014-15/segments/1397609530131.27/warc/CC-MAIN-201404160... |
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in a children summer camp there are 150 children, 75 of the ar... | {"url":"http://openstudy.com/updates/506ee5c6e4b060a360ff6b36","timestamp":"2014-04-17T18:33:53Z","content_type":null,"content_length":"37450","record_id":"<urn:uuid:d9a93593-6cc5-4f96-ad73-8b5099d19f73>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00602-ip-10-147-4-33.ec2.internal.... |
CARA Outreach - YSI 1998 Pictures - Parallax
Click on any small image to retrieve a larger one.
The three members of the reporting group are pictured here laying out the base of the triangle used for the Parallax lab. The three members are Shaconda Dixon (standing front left), Tamika Robinson
(back center), and Michea... | {"url":"http://astro.uchicago.edu/cara/outreach/se/ysi/98pix/parallax/","timestamp":"2014-04-19T04:21:21Z","content_type":null,"content_length":"2426","record_id":"<urn:uuid:426c5b3a-8085-42d1-ba72-17928c348326>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00598-ip-10-147-4-33.ec2.i... |
Johns Creek, GA Algebra Tutor
Find a Johns Creek, GA Algebra Tutor
...First, I earned my degree in Art at the State University of Santo Domingo, Dominican Republic (U.A.S.D.). I later earned a bilingual teaching degree from U.N.P.H.U., also in Santo Domingo.
After teaching for 6 years in the D.R., I moved to Pittsb... | {"url":"http://www.purplemath.com/Johns_Creek_GA_Algebra_tutors.php","timestamp":"2014-04-17T19:28:20Z","content_type":null,"content_length":"24110","record_id":"<urn:uuid:07f0839d-8ba8-4602-a1cc-5aa90b8ed09a>","cc-path":"CC-MAIN-2014-15/segments/1397609530895.48/warc/CC-MAIN-20140416005210-00345-ip-10-147-4-33.ec2.int... |
Turing/Solution 1
var n : int %User input
var ctr : int := 0 %Counter variable
var gotit : boolean %Stores if fractorial is found
get n
ctr := 0 %ctr is NEVER actually used as zero, since that would cause a division by 0 error.
gotit := true %Initially assume that fractorial has been found... | {"url":"http://en.m.wikibooks.org/wiki/Turing/Solution_1","timestamp":"2014-04-16T07:24:57Z","content_type":null,"content_length":"14334","record_id":"<urn:uuid:36c414c5-1c38-4177-a82c-72c983b5d1b6>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-20140423032003-00118-ip-10-147-4-33.ec2.internal.warc.g... |
[FOM] Analyticity of half-exponentials
joeshipman@aol.com joeshipman at aol.com
Mon Apr 16 19:37:14 EDT 2007
>> Is there a monotonic real analytic function defined on the
>> non-negative real numbers such that f(f(x)) = 2^x, or f(f(x))=e^x?
> "For the equation
>(*) f^2(x) = e^x,
>a real analytic solution ... | {"url":"http://www.cs.nyu.edu/pipermail/fom/2007-April/011514.html","timestamp":"2014-04-19T01:52:19Z","content_type":null,"content_length":"4811","record_id":"<urn:uuid:5fa8a319-8dd5-45cb-81a5-cacafc98244d>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0/warc/CC-MAIN-20140416005215-00122-ip-10-147-4-33.ec2.intern... |
20 search hits
Multiplicity distribution of electron-positron pairs created by strong external fields (1992)
Christoph Best Walter Greiner Gerhard Soff
We discuss the multiplicity distribution of electron-positron pairs created in the strong electromagnetic fields of ultrarelativistic heavy-ion transits. Based on n... | {"url":"http://publikationen.ub.uni-frankfurt.de/solrsearch/index/search/searchtype/authorsearch/author/%22Gerhard+Soff%22/start/0/rows/10/author_facetfq/Walter+Greiner/sortfield/author/sortorder/asc","timestamp":"2014-04-19T02:25:52Z","content_type":null,"content_length":"39940","record_id":"<urn:uuid:884c0259-cf17-41... |
Akihiko Inoue's Homepage
Akihiko Inoue's Homepage
English / Japanese
Higashi-Hiroshima 739-8526, Japan
E-mail... | {"url":"http://home.hiroshima-u.ac.jp/inoue100/index-e.html","timestamp":"2014-04-18T15:40:00Z","content_type":null,"content_length":"11694","record_id":"<urn:uuid:bc97c69f-caab-4d32-8547-ef78d7465b88>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00432-ip-10-147-4-33.ec2.internal.wa... |
Consider A Series RL Circuit With A Voltage Source. ... | Chegg.com
Consider a series RL circuit with a voltage source. Take the output as the voltage across the resistor with L = 2 henrys and R = 4 ohms. (a) Find the zero input response as a function of time. The
initial current is 2 A. . (b) Determine the integrating... | {"url":"http://www.chegg.com/homework-help/questions-and-answers/consider-series-rl-circuit-voltage-source-take-output-voltage-across-resistor-l-2-henrys-r-q4074161","timestamp":"2014-04-20T08:43:04Z","content_type":null,"content_length":"22374","record_id":"<urn:uuid:4221dda6-3483-492a-a051-0d545770ba1d>","cc-path":"C... |
1. strong masculine singular genitive form of formal.
2. strong masculine singular accusative form of formal.
3. strong neuter singular genitive form of formal.
4. strong plural dative form of formal.
5. weak masculine singular genitive form of formal.
6. weak masculine singular dative form of formal.
7. weak mas... | {"url":"http://en.m.wiktionary.org/wiki/formalen","timestamp":"2014-04-18T09:06:53Z","content_type":null,"content_length":"23723","record_id":"<urn:uuid:43ea0458-daf8-43cc-95d7-f8fc2b7b23ea>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00350-ip-10-147-4-33.ec2.internal.warc.gz"} |
Lesson plan -Number and algebra: Pythagoras’ theorem
Subject Maths Key stage 4
Topic Area Number and algebra: Pythagoras’ theorem Programme of study links
Objectives To understand Pythagoras' theorem and how it can be used to calculate the hypotenuse 1.3b, 2.2, 3.2c
Les... | {"url":"http://preview.channel4learning.com/espresso/clipbank/html/tr_lp_maths_pythagoras_tn.html","timestamp":"2014-04-18T16:00:04Z","content_type":null,"content_length":"13220","record_id":"<urn:uuid:f84f3169-4ef2-4fc0-b462-563d5d35f1e5>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-2014041600521... |
Pressure Unit Conversion Problem - Worked Example Problem Converting Pressure Units
This is a worked example problem converting units of pressure.
Pressure Conversion Problem
The pressure reading from a barometer is 742 mm Hg. Express this reading in kilopascals, kPa.
This conversion may be performed using two conversi... | {"url":"http://chemistry.about.com/od/workedchemistryproblems/a/pressure-unit-conversion.htm","timestamp":"2014-04-18T20:44:13Z","content_type":null,"content_length":"39364","record_id":"<urn:uuid:25e1924a-54d1-459b-aca3-315326c768d8>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-0020... |
Standard Deviation for Variance?
Date: 01/25/2001 at 06:00:15
From: Dr Peter Lobmayer
Subject: Standard deviation for variance - does it exist ?
I calculate income inequality from a survey sample. One of the
measures I use is the variance of the logarithm of individual income
in different geographical areas. Sample siz... | {"url":"http://mathforum.org/library/drmath/view/52204.html","timestamp":"2014-04-19T05:27:47Z","content_type":null,"content_length":"8149","record_id":"<urn:uuid:3a322d7f-2d81-4a26-ad1b-524a98e1be71>","cc-path":"CC-MAIN-2014-15/segments/1397609535775.35/warc/CC-MAIN-20140416005215-00038-ip-10-147-4-33.ec2.internal.war... |
Continuous Beams | Design of RCC Structures | Civil Engineering Projects
Continuous Beams | Design of RCC Structures
Design of Continuous Beam | RCC Structures
The beam that rests on more than two supports. The beam that rests over multiple columns. Continuous beams increase the structural rigidity of a structure. They... | {"url":"http://www.civilprojectsonline.com/building-construction/continuous-beams-design-of-rcc-structures/","timestamp":"2014-04-21T07:56:26Z","content_type":null,"content_length":"54398","record_id":"<urn:uuid:b418146a-c2c9-463c-a8f0-b6702e5eee22>","cc-path":"CC-MAIN-2014-15/segments/1398223211700.16/warc/CC-MAIN-201... |
Hot Rod Forum : Hotrodders Bulletin Board - rpm to low?
- -
rpm to low?
gearheadslife 01-30-2013 04:11 PM
rpm to low?
Wasn't sure if I should post this here or in the engine area.. you'll see why..
my c-10 if I install a 2004r and 29 tall tires..
with my 3:08 gears the rpm is =
3:73's would be
and 4:11 would be 201... | {"url":"http://www.hotrodders.com/forum/rpm-low-228991-print.html","timestamp":"2014-04-17T05:57:20Z","content_type":null,"content_length":"13577","record_id":"<urn:uuid:67f277e2-d3a7-4e59-a92c-522f4333aee3>","cc-path":"CC-MAIN-2014-15/segments/1397609526252.40/warc/CC-MAIN-20140416005206-00251-ip-10-147-4-33.ec2.inter... |
[SOLVED] Rearranging a differential equation
November 25th 2008, 07:21 AM #1
Nov 2008
[SOLVED] Rearranging a differential equation
Hi I am supposed to "just" rearrange the following equation and at one point substitute dh/dt = A/rho with the constant A:
With the constant C and rho(i).
The result looks l... | {"url":"http://mathhelpforum.com/differential-equations/61587-solved-rearranging-differential-equation.html","timestamp":"2014-04-16T21:01:38Z","content_type":null,"content_length":"34683","record_id":"<urn:uuid:4fd9712b-c288-4e18-a00a-6d563d738e5f>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-201... |
simple question
:eek: umm.. its an unsigned integer.... meaning... un-negative, positive only... so if you call a unsigned int and its value is less than 0 it will say 0 instead of -(number here)
>what is an unsigned integer? An integer that cannot hold negative values, so instead of spanning a certain length into the ... | {"url":"http://cboard.cprogramming.com/cplusplus-programming/19811-simple-question-printable-thread.html","timestamp":"2014-04-18T10:00:41Z","content_type":null,"content_length":"7045","record_id":"<urn:uuid:118823f9-90e7-4e8f-8183-b3b5c619a40f>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-2014041... |
create tcl variables from current state
Write internal xspec data to a tcl variable. This facility allows the manipulation of xspec data by tcl scripts, so that one can, for example, extract data from xspec runs and store in output files,
format xspec output data as desired, use independent plotting software, etc.
? ... | {"url":"http://heasarc.gsfc.nasa.gov/lheasoft/xanadu/xspec/manual/XStclout.html","timestamp":"2014-04-18T16:36:22Z","content_type":null,"content_length":"44344","record_id":"<urn:uuid:70fd11d4-c753-4d57-bfc6-601137a5cf09>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00050-ip-10-147-... |
Vector-valued function
A mathematical (Vector Calculus) term.
A vector-valued function (also called a vector function) is simply any function that has a vector as its output (range). That is (limiting ourself to the Real Numbers) a function that maps R^n -> R^
m, where n > 0, m > 1. This is opposed to your normal scala... | {"url":"http://www.everything2.com/index.pl?node_id=1525585","timestamp":"2014-04-18T13:06:46Z","content_type":null,"content_length":"21589","record_id":"<urn:uuid:4bb1a827-6cb8-481a-85af-56eceacb647a>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00436-ip-10-147-4-33.ec2.internal.wa... |
Computational Complexity
A few notes on Dagshul which Lance and I were at last week.
1. I could tell you about the talks, but the website does a better job: here
2. I value going to talks more than Lance does, which is odd since he probably gets more out of them. Nevertheless, they serve two functions:
1. Lets m... | {"url":"http://blog.computationalcomplexity.org/2009/10/notes-on-dagstuhl.html","timestamp":"2014-04-19T19:34:54Z","content_type":null,"content_length":"165248","record_id":"<urn:uuid:d9d6bf24-e30a-4fb0-966b-6791126a5fbd>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00061-ip-10-147-... |
Confusion about calculation of aerodynamic moments
Can anybody explain how the aerodynamic moment is calculated for an airfoil ?
I was reading the first chapter in "Fundamentals of Aerodynamics" by Anderson & the formula for aerodynamic moment for the lower surface of the airfoil confused me. Is the aerodynamic moment
... | {"url":"http://www.physicsforums.com/showthread.php?t=579855","timestamp":"2014-04-18T13:43:31Z","content_type":null,"content_length":"24331","record_id":"<urn:uuid:d8c6694b-9bdd-48a8-88fd-5580872f18a3>","cc-path":"CC-MAIN-2014-15/segments/1398223210034.18/warc/CC-MAIN-20140423032010-00333-ip-10-147-4-33.ec2.internal.w... |
188 helpers are online right now
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Java Applets
A series of Applets designed for introductory level Calculus courses. Over 30 different topics covered, including limits, secant lines, applications of derivatives, Riemann sums, applications of
integrals, parametric equations, Taylor series and slope fields.
A collection of Applets that can be used to enc... | {"url":"http://www.personal.psu.edu/dpl14/applets.html","timestamp":"2014-04-21T02:42:00Z","content_type":null,"content_length":"4565","record_id":"<urn:uuid:8362ad65-645e-4e02-ba82-ec3270c74674>","cc-path":"CC-MAIN-2014-15/segments/1398223205375.6/warc/CC-MAIN-20140423032005-00655-ip-10-147-4-33.ec2.internal.warc.gz"} |
Physics Teaching Technology Resource: Learning Cycles on Motion
Website Detail Page
written by Eugenia Etkina
supported by the National Science Foundation
This learning cycle features 19 videotaped experiments, organized sequentially for introducing fundamentals of motion in introductory physics courses. Each video i... | {"url":"http://www.compadre.org/precollege/items/detail.cfm?ID=11549","timestamp":"2014-04-18T13:13:09Z","content_type":null,"content_length":"56795","record_id":"<urn:uuid:d7b713fb-9b02-4b39-b92e-067a5ce5e58f>","cc-path":"CC-MAIN-2014-15/segments/1397609533689.29/warc/CC-MAIN-20140416005213-00124-ip-10-147-4-33.ec2.in... |
The Big Bang versus the 'Big Bounce'
July 6th, 2012 in Physics / Quantum Physics
Credit: Thinkstock
Credit: Thinkstock
Two fundamental concepts in physics, both of which explain the nature of the Universe in many ways, have been difficult to reconcile with each other. European researchers developed a mathematical
appro... | {"url":"http://phys.org/print260784395.html","timestamp":"2014-04-17T10:46:28Z","content_type":null,"content_length":"7035","record_id":"<urn:uuid:17f9a24a-b386-47db-9190-070e8c410b30>","cc-path":"CC-MAIN-2014-15/segments/1398223206118.10/warc/CC-MAIN-20140423032006-00104-ip-10-147-4-33.ec2.internal.warc.gz"} |
Gloucester City Calculus Tutors
...One quick note about my cancellation policy, as it's different than most tutors: Cancel one or all sessions at any time, and there is NO CHARGE. Thank you for considering my services, and the
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PHA*: Finding the Shortest Path with A* in An Unknown Physical Environment
A. Felner, R. Stern, A. Ben-Yair, S. Kraus, and N. Netanyahu
We address the problem of finding the shortest path between two points in an unknown real physical environment, where a traveling agent must move around in the environment to explore u... | {"url":"http://www.aaai.org/Library/JAIR/Vol21/jair21-019.php","timestamp":"2014-04-19T12:12:31Z","content_type":null,"content_length":"3420","record_id":"<urn:uuid:95027a18-6167-40ee-8815-cc7d742f12cd>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00027-ip-10-147-4-33.ec2.internal.w... |
Trigonometry in Newtonian Dynamics HARD
August 26th 2009, 05:38 AM
Trigonometry in Newtonian Dynamics HARD
A particle of mass $m\sb{1}$ is travelling along the x-axis with velocity $(v\sb{1},0,0)$. It collides elastically with a stationary particle of mass $m\sb{2}$. After the collision, the particle
of mass $m... | {"url":"http://mathhelpforum.com/trigonometry/99279-trigonometry-newtonian-dynamics-hard-print.html","timestamp":"2014-04-19T12:28:45Z","content_type":null,"content_length":"14137","record_id":"<urn:uuid:2b5574b8-4441-49ab-9751-183aca764b97>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005... |
Wolfram Demonstrations Project
Directional Derivatives and the Gradient
This Demonstration visually explains the theorem stating that the directional derivative of the function at the point , ) in the direction of the unit vector is equal to the dot product of the
gradient of with . If we denote the partial derivatives... | {"url":"http://www.demonstrations.wolfram.com/DirectionalDerivativesAndTheGradient/","timestamp":"2014-04-20T00:58:12Z","content_type":null,"content_length":"46028","record_id":"<urn:uuid:be724f7f-b23e-4ebe-ad43-c4aa02096c67>","cc-path":"CC-MAIN-2014-15/segments/1398223206770.7/warc/CC-MAIN-20140423032006-00105-ip-10-1... |
Browse Course Communities
The applet is written in HTML5, so it is available on tablets. It has a clean look and feel with nine examples. There are exploration questions and an idea for a project.
Interactive learning materials and instructional modules demonstrating hands-on use of probability distributi
This is an in... | {"url":"http://www.maa.org/programs/faculty-and-departments/course-communities/browse?term_node_tid_depth=All&page=2&device=mobile","timestamp":"2014-04-20T03:37:08Z","content_type":null,"content_length":"45266","record_id":"<urn:uuid:685e4175-a910-4e55-b837-106a2bb4e736>","cc-path":"CC-MAIN-2014-15/segments/1397609537... |
Lie algebra valued 1-forms and pointed maps to homogeneous spaces
up vote 14 down vote favorite
Let $G$ be a Lie group with Lie algebra $\mathfrak{g}$, and let $(M,p_0)$ be a simply connected pointed smooth manifold. A $\mathfrak{g}$-valued 1-form $\omega$ on $M$ can be seen as a connection
form on the trivial principa... | {"url":"http://mathoverflow.net/questions/84218/lie-algebra-valued-1-forms-and-pointed-maps-to-homogeneous-spaces","timestamp":"2014-04-21T12:46:52Z","content_type":null,"content_length":"64210","record_id":"<urn:uuid:8027b193-f5a4-4492-b4b4-519d4e35b43e>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-MA... |
Process Algebra,'' Cambridge Univ
- Concur ’95: Concurrency Theory, volume 962 of Lecture Notes in Computer Science , 1995
"... In this paper we present a solution to the long-standing problem of characterising the coarsest liveness-preserving pre-congruence with respect to a full (TCSP-inspired) process algebra. In
fa... | {"url":"http://citeseerx.ist.psu.edu/showciting?cid=2492056","timestamp":"2014-04-19T15:39:43Z","content_type":null,"content_length":"19559","record_id":"<urn:uuid:c03f7a5d-805a-40de-905e-960228d173d7>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00607-ip-10-147-4-33.ec2.internal.war... |
Group Theory
Classical groups
Finite groups
Group schemes
Topological groups
Lie groups
Super-Lie groups
Higher groups
Cohomology and Extensions
Given a subset $S$ of a group $G$, its normalizer $N(S)=N_G(S)$ is the subgroup of $G$ consisting of all elements $g\in G$ such that $g S = S g$, i.e. for each $s\in S$ there ... | {"url":"http://www.ncatlab.org/nlab/show/normalizer","timestamp":"2014-04-18T18:56:30Z","content_type":null,"content_length":"27229","record_id":"<urn:uuid:0f93d861-317d-4ebc-bdce-a4fcd5f1bac3>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00083-ip-10-147-4-33.ec2.internal.warc.gz"} |
Is Being Rational The Same As Being Logical?
Here’s my write-up of last night’s event — please add comments where I’ve missed things, got things wrong etc. In particular, this is my recollection of what Wilfrid said and isn’t based on his
notes, so apologies if I’ve mangled anything.
The topic was introduced by Prof Wi... | {"url":"http://bigi.org.uk/blog/2008/10/01/is-being-rational-the-same-as-being-logical/","timestamp":"2014-04-18T11:30:09Z","content_type":null,"content_length":"19950","record_id":"<urn:uuid:28c873a8-47ed-4643-ac96-0af9457e28d1>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00263-ip... |
Vipers amazing theroy on life in the universe!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The universe is infinite so that means that there are an infinite number of planets.
Prove it. And infinite spacetime != infinite matter.
Some of these planets are known to have no life on them so there must be a finite number of plan... | {"url":"http://www.physicsforums.com/showthread.php?p=32626","timestamp":"2014-04-19T02:12:54Z","content_type":null,"content_length":"34927","record_id":"<urn:uuid:6be37bde-c53f-45d3-9709-c3b09a67b13f>","cc-path":"CC-MAIN-2014-15/segments/1398223202774.3/warc/CC-MAIN-20140423032002-00531-ip-10-147-4-33.ec2.internal.war... |
A Normal Distribution Inequality
up vote 13 down vote favorite
Let $n(x) = \frac{1}{\sqrt{2\pi}} e^{-\frac{x^2}{2}}$, and $N(x) = \int_{-\infty}^x n(t)dt$. I have plotted the curves of the both sides of the following inequality. The graph shows that the
following inequality may be true. $$f(x)\equiv (x^2+1)N + xn-(xN+n... | {"url":"http://mathoverflow.net/questions/135593/a-normal-distribution-inequality/135984","timestamp":"2014-04-16T07:43:15Z","content_type":null,"content_length":"104765","record_id":"<urn:uuid:b05dc06c-37fd-4bcb-8e53-d4d4bc916675>","cc-path":"CC-MAIN-2014-15/segments/1398223203422.8/warc/CC-MAIN-20140423032003-00239-i... |
Pennington, NJ Algebra Tutor
Find a Pennington, NJ Algebra Tutor
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Lawrenceville School. 12 years working as a Middle/Upper S... | {"url":"http://www.purplemath.com/Pennington_NJ_Algebra_tutors.php","timestamp":"2014-04-19T06:58:34Z","content_type":null,"content_length":"24265","record_id":"<urn:uuid:d3d18b69-f97b-4b7b-8bbd-84251c42c7c5>","cc-path":"CC-MAIN-2014-15/segments/1397609536300.49/warc/CC-MAIN-20140416005216-00632-ip-10-147-4-33.ec2.inte... |
the first resource for mathematics
Spectra of graphs. Theory and applications. 3rd rev. a. enl. ed.
(English) Zbl 0824.05046
Leipzig: J. A. Barth Verlag. 447 p. DM 168,00; öS 1.310,00; sFr 168,00 (1995).
This is the third, enlarged edition of the book in which the second edition is reproduced and extended by two append... | {"url":"http://zbmath.org/?q=an:0824.05046&format=complete","timestamp":"2014-04-18T05:52:44Z","content_type":null,"content_length":"22331","record_id":"<urn:uuid:a13b16e4-c5ad-4284-b466-a28707628ece>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00204-ip-10-147-4-33.ec2.internal.war... |
Bolzano-Weierstrass Theorem
September 24th 2009, 03:05 PM
Bolzano-Weierstrass Theorem
Prove the following two dimensional form of the Bolzano-Weierstrass Theorem:
If ${(x_{n},y_{n})}$ is a sequence of points in they $xy$ plane, all of which lie in a rectangle,
$R = [a,b] \times [c,d] = {(x,y): a \leq x \leq... | {"url":"http://mathhelpforum.com/differential-geometry/104132-bolzano-weierstrass-theorem-print.html","timestamp":"2014-04-18T09:29:34Z","content_type":null,"content_length":"6567","record_id":"<urn:uuid:c1eca703-eb3a-4ad8-afbc-20142b829c42>","cc-path":"CC-MAIN-2014-15/segments/1397609533121.28/warc/CC-MAIN-20140416005... |
Roger Penrose: A Knight on the tiles
Roger Penrose: A Knight on the tiles
Issue 18
Jan 2002
Sir Roger Penrose is one of the world's most widely known mathematicians. His popular books describe his insights and speculations about the workings of the human mind and the relationships between
mathematics and physics. His ... | {"url":"http://plus.maths.org/content/os/issue18/features/penrose/index","timestamp":"2014-04-18T23:16:51Z","content_type":null,"content_length":"41635","record_id":"<urn:uuid:34baae14-5a48-4d22-86b2-63bae1f70633>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00308-ip-10-147-4-33.ec2.... |
Timing the BLAS
Next: Timing the Eigensystem Routines Up: Run the LAPACK Timing Previous: Timing the Linear Equations Contents
Timing the BLAS
The linear equation timing program is also used to time the BLAS. Three input files are provided in each data type for timing the Level 2 and 3 BLAS. These input files time... | {"url":"http://www.netlib.org/lapack/lawn81/node29.html","timestamp":"2014-04-20T08:33:25Z","content_type":null,"content_length":"5958","record_id":"<urn:uuid:652560d1-3a1c-44c8-aa83-0d670639d823>","cc-path":"CC-MAIN-2014-15/segments/1398223202457.0/warc/CC-MAIN-20140423032002-00662-ip-10-147-4-33.ec2.internal.warc.gz"... |
Coppell Precalculus Tutor
...I have taught Trigonometry for several years in local high schools. It can be difficult at first but most students catch on quickly with some one on one tutoring. I have a Masters degree in
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second order ODE with sin term
December 8th 2009, 08:46 AM #1
Nov 2009
second order ODE with sin term
i am trying to solve this ode but can't seem to get any traction:
$\frac {d^2 \theta(\tau)} {d \tau^2} + \sin(\theta(\tau) ) = 0$
$\theta(0) = A$
$\dot{\theta}(0) = 0$
How would i go about solvi... | {"url":"http://mathhelpforum.com/differential-equations/119330-second-order-ode-sin-term.html","timestamp":"2014-04-17T23:43:06Z","content_type":null,"content_length":"36105","record_id":"<urn:uuid:8a4b8835-c4f5-43b9-b277-98efb1576e48>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00... |
Physics Forums - View Single Post - Marseille workshop on loops and spin foams
Mike2 on the other thread raised the question of whether the quantum gravity model assumed by AJL had been rigorously developed.
As far as I can tell, it's completely rigorous. And I'm a mathematician by training, so I'm more fussy about th... | {"url":"http://www.physicsforums.com/showpost.php?p=213627&postcount=27","timestamp":"2014-04-18T03:07:36Z","content_type":null,"content_length":"9508","record_id":"<urn:uuid:aeb0b799-f1b2-45c3-91d7-87b1ec17a4c6>","cc-path":"CC-MAIN-2014-15/segments/1398223206147.1/warc/CC-MAIN-20140423032006-00568-ip-10-147-4-33.ec2.i... |
Equivalence Classes
May 8th 2010, 10:31 AM #1
May 2010
Equivalence Classes
Hello, Im having problems with equivalence classes.
The relation R is defined for complex numbers z=x+yi and w=a+bi. zRw if and only if x+b=y+a
I am asked to give the elements of the equivalence class containg [i]
I have wrot... | {"url":"http://mathhelpforum.com/discrete-math/143696-equivalence-classes.html","timestamp":"2014-04-19T00:19:38Z","content_type":null,"content_length":"42453","record_id":"<urn:uuid:0120147a-7fef-4f0c-91a2-ffcf574c22ce>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-20140416005215-00030-ip-10-147-4-... |
complex rational expression solver
Author Message
Spekej Posted: Saturday 30th of Dec 11:27
Hey dudes, I have just completed one week of my college... | {"url":"http://www.algebra-equation.com/solving-algebra-equation/graphing-inequalities/complex-rational-expression.html","timestamp":"2014-04-20T13:57:11Z","content_type":null,"content_length":"24617","record_id":"<urn:uuid:e375dc44-c43a-45aa-86c3-00960e9af4c3>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc... |
Continuity and differentiability
July 30th 2009, 10:27 AM #1
Jul 2009
Continuity and differentiability
Hi all,
I got some problems doing some exams exercises...
They ask me to study the continuity and the differentiability of some functions but I always get similar results...
$f(x,y)=x/(x-y^3)$, if ... | {"url":"http://mathhelpforum.com/calculus/96537-continuity-differentiability.html","timestamp":"2014-04-16T20:05:19Z","content_type":null,"content_length":"63649","record_id":"<urn:uuid:eeeb2331-4dc0-4ebc-b29e-36e113dc4431>","cc-path":"CC-MAIN-2014-15/segments/1397609524644.38/warc/CC-MAIN-20140416005204-00123-ip-10-14... |
Mathematica Scripts
Script Files
A Mathematica script is simply a file containing Mathematica commands that you would normally evaluate sequentially in a Mathematica session. Writing a script is useful if the commands need to be
repeated many times. Collecting these commands together ensures that they are evaluated in ... | {"url":"http://reference.wolfram.com/mathematica/tutorial/MathematicaScripts.html","timestamp":"2014-04-19T12:36:36Z","content_type":null,"content_length":"39068","record_id":"<urn:uuid:538d778a-70b2-4f95-9684-25259d7e97e3>","cc-path":"CC-MAIN-2014-15/segments/1397609537186.46/warc/CC-MAIN-20140416005217-00331-ip-10-14... |
Normandy Park, WA Prealgebra Tutor
Find a Normandy Park, WA Prealgebra Tutor
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Algebra (Volume, Ratios)
March 1st 2013, 01:16 PM
Algebra (Volume, Ratios)
The figure (fig) shows a solid consisting of three parts, a cone, a cylinder and a hemisphere, all of the same base radius.
The first part of the question asks us to find the volume of each part, in terms of w, s, t and π (pi):
Volum... | {"url":"http://mathhelpforum.com/algebra/214060-algebra-volume-ratios-print.html","timestamp":"2014-04-20T15:08:28Z","content_type":null,"content_length":"9017","record_id":"<urn:uuid:2485a890-3a4d-4d8b-a3df-89008d1687b6>","cc-path":"CC-MAIN-2014-15/segments/1397609538787.31/warc/CC-MAIN-20140416005218-00199-ip-10-147-... |
Evaluate log(base 5) 81.
Round your answer to the nearest four decimals. - Homework Help - eNotes.com
Evaluate log(base 5) 81.
Round your answer to the nearest four decimals.
Value of `log_5(81)` has to be evaluated.
`=(4*log_e(3))/(log_e(5))` (using the rule for change of base of logarithms)
Join to answer this qu... | {"url":"http://www.enotes.com/homework-help/evaluate-log-base-5-81-round-your-answer-nearest-448267","timestamp":"2014-04-19T00:21:48Z","content_type":null,"content_length":"24366","record_id":"<urn:uuid:3f55cf1e-bb74-4ccb-847d-50ab836d0b6e>","cc-path":"CC-MAIN-2014-15/segments/1397609535535.6/warc/CC-MAIN-201404160052... |
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Building Candidate Keys
Functional Dependencies
A functional dependency is a functional relationship between sets of attributes which belong to the same table and whose definition may or may not change over time.
Emp# ---> Salary
is an example of a functional dependency. For each employee (identified by... | {"url":"http://www.cs.newpaltz.edu/~pletcha/BuildingCandidateKeys.html","timestamp":"2014-04-20T06:45:33Z","content_type":null,"content_length":"8998","record_id":"<urn:uuid:52546dff-7c65-4d04-86ed-60f9c140a0a6>","cc-path":"CC-MAIN-2014-15/segments/1398223206672.15/warc/CC-MAIN-20140423032006-00074-ip-10-147-4-33.ec2.i... |
Fulton, MD Precalculus Tutor
Find a Fulton, MD Precalculus Tutor
...Each student has a different way of learning a subject. In tutoring, I always make it a point to figure out the student's style of learning and I plan my tutoring sessions accordingly,
spending extra time to prepare for the session prior to meeting... | {"url":"http://www.purplemath.com/fulton_md_precalculus_tutors.php","timestamp":"2014-04-21T11:04:12Z","content_type":null,"content_length":"24230","record_id":"<urn:uuid:2443046d-f639-4597-98ed-9709be6f26dd>","cc-path":"CC-MAIN-2014-15/segments/1397609539705.42/warc/CC-MAIN-20140416005219-00640-ip-10-147-4-33.ec2.inte... |
Some studies on dynkin diagrams associated with Kac-moody algebra
Singh , Amit Kumar (2011) Some studies on dynkin diagrams associated with Kac-moody algebra. MSc thesis.
In the present project report, a sincere report has been made to construct and study the basic information related to Simple Lie Algebras, Kac-Moody ... | {"url":"http://ethesis.nitrkl.ac.in/2195/","timestamp":"2014-04-16T10:30:56Z","content_type":null,"content_length":"14584","record_id":"<urn:uuid:4f652725-c950-4be8-96fc-3bde5b4a2d20>","cc-path":"CC-MAIN-2014-15/segments/1397609523265.25/warc/CC-MAIN-20140416005203-00312-ip-10-147-4-33.ec2.internal.warc.gz"} |
Posts by The Development Team—Wolfram|Alpha Blog
Blog Posts from this author:
Based on the vast number of queries we have been receiving from users all around the world, we thought it would be very interesting to draw some inferences from it. We started with “Human Body
Measurements”, one of the many topic areas in Wol... | {"url":"http://blog.wolframalpha.com/author/devteam/","timestamp":"2014-04-21T07:03:36Z","content_type":null,"content_length":"47309","record_id":"<urn:uuid:0fa09456-2ea8-4e8d-8198-7bc1333c0e93>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00082-ip-10-147-4-33.ec2.internal.warc.gz"} |
Program verification as probabilistic inference
Program verification as probabilistic inference (2007)
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Other Repositories/Bibliography
by Sumit Gulwani
Venue: In Proc. POPL
Citations: 8 - 3 self
author = {Sumit Gulwani},
title = {Program verification as probabilistic inference},
booktitle =... | {"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.136.8778","timestamp":"2014-04-20T01:45:47Z","content_type":null,"content_length":"25611","record_id":"<urn:uuid:93cbdbff-a203-43c9-b4bf-4009448f11e3>","cc-path":"CC-MAIN-2014-15/segments/1397609537804.4/warc/CC-MAIN-20140416005217-00361-ip-10-147-4-33.ec2... |
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An electronics store sells an average of 60 entertainment syst... | {"url":"http://openstudy.com/updates/508a4533e4b0d596c46073a3","timestamp":"2014-04-19T17:12:56Z","content_type":null,"content_length":"38118","record_id":"<urn:uuid:1427c580-9380-491f-9234-2038b0d6fcf7>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00316-ip-10-147-4-33.ec2.internal.... |
check an equation of curvature in 2D image?
November 22nd 2012, 04:31 AM #1
Dec 2011
check an equation of curvature in 2D image?
please i have a question about an equation given in this article: Curvature and Bending Energy in Digitized 2D and 3D Images). paragraphe 3. Isophote curvature in 2D
he said :
... | {"url":"http://mathhelpforum.com/higher-math/208161-check-equation-curvature-2d-image.html","timestamp":"2014-04-19T22:56:53Z","content_type":null,"content_length":"30373","record_id":"<urn:uuid:a3f8f449-82ec-4d8d-83db-ad70dadc4790>","cc-path":"CC-MAIN-2014-15/segments/1397609537754.12/warc/CC-MAIN-20140416005217-00476... |
Pearland Statistics Tutor
Find a Pearland Statistics Tutor
I am currently a CRLA certified level 3. I have been tutoring for close to 5 years now on most math subjects from Pre-Algebra up through Calculus 3. I have done TA jobs where I hold sessions for
groups of students to give them extra practice on their course... | {"url":"http://www.purplemath.com/Pearland_statistics_tutors.php","timestamp":"2014-04-18T21:48:00Z","content_type":null,"content_length":"23834","record_id":"<urn:uuid:b01c6195-f5e9-47f7-aced-21c2cb4f6bf9>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00517-ip-10-147-4-33.ec2.intern... |
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Here's the question you clicked on:
LGBARIDDLE: A frog flew by drinking RED-BULL. Then, how did a ... | {"url":"http://openstudy.com/updates/5051d575e4b02b4447c14280","timestamp":"2014-04-20T18:32:23Z","content_type":null,"content_length":"79780","record_id":"<urn:uuid:dc5140c4-4b7b-494b-b109-8b12b230602a>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00117-ip-10-147-4-33.ec2.internal.... |
st: use of string matrices
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st: use of string matrices
From "Feiveson, Alan H. (JSC-SK311)" <alan.h.feiveson@nasa.gov>
To <statalist@hsphsun2.harvard.edu>
Subject st: use of string matrices
Date Tue, 15 May 2007 11:03:17 -0500
A comple... | {"url":"http://www.stata.com/statalist/archive/2007-05/msg00496.html","timestamp":"2014-04-18T03:44:25Z","content_type":null,"content_length":"8328","record_id":"<urn:uuid:9e6ba831-d010-40f2-b056-b2a6c867625d>","cc-path":"CC-MAIN-2014-15/segments/1397609532480.36/warc/CC-MAIN-20140416005212-00127-ip-10-147-4-33.ec2.int... |
Theoretical and Experimental Probability ( Read ) | Probability
Have you ever wanted to trade jobs with someone else? Take a look at this dilemma between two friends.
“I don’t want to work on the weekend,” Carey said to Telly at lunch one day.
“But that was part of the deal. We both have to work one day out of the week... | {"url":"http://www.ck12.org/probability/Theoretical-and-Experimental-Probability/lesson/Experimental-Probability/","timestamp":"2014-04-21T13:01:03Z","content_type":null,"content_length":"117864","record_id":"<urn:uuid:9c4b6227-0083-4666-8a05-1fc518cee512>","cc-path":"CC-MAIN-2014-15/segments/1397609539776.45/warc/CC-M... |
Physics Siphoning - Torricellis Law
Siphons are tubes which draw fluid over the rim of a tank to a lower point. After an initial pressure change to initiate the flow, siphons operate continuously due to the pull of gravity.
Torricelli's law says if a liquid flows from an opening in a container, its speed is the same as... | {"url":"https://www.brightstorm.com/science/physics/solids-liquids-and-gases/physics-siphoning-torricellis-law/","timestamp":"2014-04-17T01:12:21Z","content_type":null,"content_length":"70815","record_id":"<urn:uuid:76eb4df2-4d1b-4215-84bd-dbe1f30c1dc1>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-... |
st: RE: Question about "predict" and "mean" when i ~= (not equal) j?
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st: RE: Question about "predict" and "mean" when i ~= (not equal) j?
From "Martin Weiss" <martin.weiss1@gmx.de>
To <statalist@hsphsun2.harvard.edu>
Subject st: RE: Ques... | {"url":"http://www.stata.com/statalist/archive/2009-11/msg01309.html","timestamp":"2014-04-17T19:10:10Z","content_type":null,"content_length":"7718","record_id":"<urn:uuid:e02fab27-dddc-4760-92e2-ee422671ebc3>","cc-path":"CC-MAIN-2014-15/segments/1398223207985.17/warc/CC-MAIN-20140423032007-00662-ip-10-147-4-33.ec2.int... |
Judy Robison on 14 Mar 13
"Need a pentagonal pyramid that's six inches tall? Or a number line that goes from ‑18 to 32 by 5's? Or a set of pattern blocks where all shapes have one-inch sides? You can create all those
things and more with the Dynamic Paper tool. Place the images you want, then export it as a... | {"url":"https://groups.diigo.com/group/discovery-educator-network/content/tag/math","timestamp":"2014-04-20T08:59:55Z","content_type":null,"content_length":"125614","record_id":"<urn:uuid:5ebb76f5-6d86-4108-ad62-4cacfc1b9634>","cc-path":"CC-MAIN-2014-15/segments/1398223206120.9/warc/CC-MAIN-20140423032006-00495-ip-10-1... |
Linear multiuser detectors for synchronous code-division multiple-access channels
Results 1 - 10 of 246
- IEEE TRANSACTIONS ON INFORMATION THEORY , 1998
"... In this paper we review the most peculiar and interesting information-theoretic and communications features of fading channels. We first describe the statistical ... | {"url":"http://citeseerx.ist.psu.edu/showciting?doi=10.1.1.83.2174","timestamp":"2014-04-18T12:29:08Z","content_type":null,"content_length":"40872","record_id":"<urn:uuid:c23f6ec9-817b-4bf8-af6c-01abb0a744df>","cc-path":"CC-MAIN-2014-15/segments/1397609533308.11/warc/CC-MAIN-20140416005213-00189-ip-10-147-4-33.ec2.inte... |
Archives of the Caml mailing list > Message from David McClain
A way to restore sanity to IEEE FP math.
Date: -- (:)
From: David McClain <dmcclain@a...>
Subject: A way to restore sanity to IEEE FP math.
All the recent difficulties I've had with IEEE FP math can be traced to the
bipolar nature of zero. Direct use ... | {"url":"http://caml.inria.fr/pub/ml-archives/caml-list/1999/09/b2ecef0d3c40eb433c89af24b219ef0c.en.html","timestamp":"2014-04-19T17:13:16Z","content_type":null,"content_length":"6774","record_id":"<urn:uuid:38393523-ea40-4726-9500-38a53c762214>","cc-path":"CC-MAIN-2014-15/segments/1398223203841.5/warc/CC-MAIN-201404230... |
Quincy Center, MA Algebra 2 Tutor
Find a Quincy Center, MA Algebra 2 Tutor
...I am also the math facilitator for my building and have been teaching for 8 years. I teach a variety of levels of students from advanced to students with special needs. I show students a
variety of ways to answer a problem because my view... | {"url":"http://www.purplemath.com/Quincy_Center_MA_Algebra_2_tutors.php","timestamp":"2014-04-16T07:40:42Z","content_type":null,"content_length":"24504","record_id":"<urn:uuid:659f9415-bf5b-4b69-bcda-3e416487b7ba>","cc-path":"CC-MAIN-2014-15/segments/1398223202548.14/warc/CC-MAIN-20140423032002-00380-ip-10-147-4-33.ec2... |
Perform load flow and initialize models containing three-phase machines and dynamic load blocks
LF = power_loadflow('-v2',sys)
LF = power_loadflow('-v2',sys,'solve')
LF = power_loadflow('-v2',sys,'noupdate')
LF = power_loadflow('-v2',sys,'solve','report')
LF = power_loadflow('-v2',sys,'solve','report',fname)
Mparam = p... | {"url":"http://www.mathworks.co.uk/help/physmod/sps/powersys/ref/power_loadflow.html?nocookie=true","timestamp":"2014-04-23T07:09:41Z","content_type":null,"content_length":"66453","record_id":"<urn:uuid:f18f4565-1243-4dda-8ed4-1d9ab17eb6e1>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-201404230320... |
[Haskell-cafe] FGL custom node identification (Label -> Node lookup)
[Haskell-cafe] FGL custom node identification (Label -> Node lookup)
Thomas DuBuisson thomas.dubuisson at gmail.com
Thu Nov 24 19:13:20 CET 2011
My thinking on this was that something akin to NodeMap should be
_part_ of the graph structure. This woul... | {"url":"http://www.haskell.org/pipermail/haskell-cafe/2011-November/097120.html","timestamp":"2014-04-18T18:40:44Z","content_type":null,"content_length":"7658","record_id":"<urn:uuid:1e3fb237-9a64-4389-b975-b3fc2faf6af1>","cc-path":"CC-MAIN-2014-15/segments/1397609535095.7/warc/CC-MAIN-20140416005215-00162-ip-10-147-4-... |
From Wikibooks, open books for an open world
Localization involves one question: Where is the robot now? Or, robo-centrically, where am I, keeping in mind that "here" is relative to some landmark (usually the point of origin or the destination)
and that you are never lost if you don't care where you are.
Although a sim... | {"url":"http://en.wikibooks.org/wiki/Robotics/Navigation/Localization","timestamp":"2014-04-18T16:27:51Z","content_type":null,"content_length":"41685","record_id":"<urn:uuid:08933eca-88c5-47a0-9e98-31851cbea18f>","cc-path":"CC-MAIN-2014-15/segments/1397609533957.14/warc/CC-MAIN-20140416005213-00408-ip-10-147-4-33.ec2.i... |
The 13th European Conference on Evolutionary Computation in Combinatorial Optimisation
EvoCOP is a multidisciplinary conference that brings together researchers working on metaheuristics that are used to solve difficult combinatorial optimization problems appearing in various
industrial, economic, and scientific domain... | {"url":"http://www.kevinsim.co.uk/evostar2013/cfpEvoCOP.html","timestamp":"2014-04-17T01:47:48Z","content_type":null,"content_length":"42378","record_id":"<urn:uuid:62fb603b-0aa0-4777-ae57-5eb6ec9ed464>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00076-ip-10-147-4-33.ec2.internal.w... |
qu-quadratic eqn.
January 17th 2010, 09:35 AM #1
Find the value of p so that the equation x^2+10x+21=0 and x^2+9x+p=0 may have a common root. Find also the equation formed by the other root.
Observe that $f(x) = x^2+10x+21 = (x+3)(x+7)$. Hence roots of $f(x) = 0$ are $x=-3$ and $x=-7$.
Observe that roots of... | {"url":"http://mathhelpforum.com/algebra/124144-qu-quadratic-eqn.html","timestamp":"2014-04-21T08:31:46Z","content_type":null,"content_length":"36310","record_id":"<urn:uuid:4f71ce28-194b-488c-b220-89eccc6261f4>","cc-path":"CC-MAIN-2014-15/segments/1397609539665.16/warc/CC-MAIN-20140416005219-00210-ip-10-147-4-33.ec2.i... |
Marietta, GA Algebra 2 Tutor
Find a Marietta, GA Algebra 2 Tutor
I have six years of college-level teaching experience in mathematics. Experience includes teaching elementary probability and statistics, college algebra, pre-calculus, and business calculus. I
assist students in solving problems and clarifying concep... | {"url":"http://www.purplemath.com/marietta_ga_algebra_2_tutors.php","timestamp":"2014-04-20T11:10:10Z","content_type":null,"content_length":"24331","record_id":"<urn:uuid:2aa3bef7-508f-44f6-b851-55f5fc36fff0>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00312-ip-10-147-4-33.ec2.inte... |
Geometry, Topology and Physics, Second Edition (Graduate Student Series in Physics)
Geometry, Topology and Physics Offers an introduction to the ideas and techniques of differential geometry and topology. This work starts with a brief survey of quantum field theory, gauge theory,
general relativity, vector spaces, and ... | {"url":"http://www.bookfinder.com/dir/i/Geometry,_Topology_and_Physics,_Second_Edition_Graduate_Student_Series_in/0750306068/","timestamp":"2014-04-19T02:56:26Z","content_type":null,"content_length":"24809","record_id":"<urn:uuid:576673cf-ad50-4586-873b-58045eea4ac7>","cc-path":"CC-MAIN-2014-15/segments/1397609535745.0... |
Textbook-Integrated Guide to Educational Resources
Journal Articles: 65 results
A Laboratory Experiment Using Molecular Models for an Introductory Chemistry Class Shahrokh Ghaffari
Presents a new approach to using molecular models in teaching general chemistry concepts. Students construct molecular models and use them ... | {"url":"http://www.chemeddl.org/alfresco/service/org/chemeddl/ttoc/ttoc_results/?id=28876&mode=primary&type=jcearticle&num_results=&guest=true","timestamp":"2014-04-20T00:39:40Z","content_type":null,"content_length":"50561","record_id":"<urn:uuid:588c939c-76de-49ce-9d37-ace9076c7928>","cc-path":"CC-MAIN-2014-15/segment... |
Vacuum Tube Spice Models - Page 3 - diyAudio
Oh No! Another Pentode Model
In another thread I posted the results of a new pentode model for the GU50 tube, and said that I would start a new topic to discuss this model in detail. I'll warn everyone right up front that this
new model has a lot of parameters that need to b... | {"url":"http://www.diyaudio.com/forums/tubes-valves/243950-vacuum-tube-spice-models-3.html","timestamp":"2014-04-21T00:55:10Z","content_type":null,"content_length":"99125","record_id":"<urn:uuid:529eb4ce-b7c7-4846-8e78-0a203ebb09cb>","cc-path":"CC-MAIN-2014-15/segments/1397609539337.22/warc/CC-MAIN-20140416005219-00170... |
Left and right representations
up vote 0 down vote favorite
In this question, representation means representation of a finite group $G$ on a finite-dimensional $\mathbb{C}$-vector space $V$.
When I studied this subject, I only learned about "left representations", i.e., when the action of $G$ on $V$ was a left action. ... | {"url":"http://mathoverflow.net/questions/71988/left-and-right-representations","timestamp":"2014-04-19T20:30:08Z","content_type":null,"content_length":"73410","record_id":"<urn:uuid:94b8a2f9-5b80-4270-ac1c-e7749c5badf9>","cc-path":"CC-MAIN-2014-15/segments/1397609537376.43/warc/CC-MAIN-20140416005217-00152-ip-10-147-4... |
To provide a paper on designing and building a high performance, independent, secure, wireless network using easily obtainable hardware. The final design should be easy to construct, yet maintain
all the goals at low cost. Network access will also be open to the public, or at least those in close proximity to our l... | {"url":"http://www.qsl.net/n9zia/wireless/page01.html","timestamp":"2014-04-23T07:54:20Z","content_type":null,"content_length":"14370","record_id":"<urn:uuid:70d21525-a9b5-4af9-96c6-c22a2705d320>","cc-path":"CC-MAIN-2014-15/segments/1398223201753.19/warc/CC-MAIN-20140423032001-00590-ip-10-147-4-33.ec2.internal.warc.gz"... |
1. Poisson law for some nonuniformly hyperbolic dynamical systems with polynomial rate of mixing (.pdf)
F. Pène, B. Saussol, preprint.
Abstract: We consider some nonuniformly hyperbolic invertible dynamical systems which are modeled by a Gibbs-Markov-Young tower. We assume a polynomial tail for the inducing tim... | {"url":"http://lmba.math.univ-brest.fr/perso/benoit.saussol/articles.html","timestamp":"2014-04-18T02:58:33Z","content_type":null,"content_length":"37981","record_id":"<urn:uuid:963bb4fb-af13-4634-95dd-fdcbf470467e>","cc-path":"CC-MAIN-2014-15/segments/1398223207046.13/warc/CC-MAIN-20140423032007-00629-ip-10-147-4-33.e... |
Numerically solving NLS equation
Hi all.
I am using the Split Step Fourier Method to solve NLS to study the interaction of two solitons.
I have done the animation of the collision of two solitons for exact solution.
But when I numerically solve it and watch the animation, the profiles during interaction is not quite th... | {"url":"http://www.physicsforums.com/showthread.php?t=195859","timestamp":"2014-04-21T12:22:15Z","content_type":null,"content_length":"22946","record_id":"<urn:uuid:420e0152-10c4-4ee1-9cb4-63a038066ad5>","cc-path":"CC-MAIN-2014-15/segments/1398223206647.11/warc/CC-MAIN-20140423032006-00643-ip-10-147-4-33.ec2.internal.w... |
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Here's the question you clicked on:
At sea level 3978(mi from center of earth) an astronaut weighs... | {"url":"http://openstudy.com/updates/4f943e65e4b000ae9eca7f0e","timestamp":"2014-04-19T17:20:29Z","content_type":null,"content_length":"77111","record_id":"<urn:uuid:1a517667-ebf3-49bd-a4db-0600cdba969e>","cc-path":"CC-MAIN-2014-15/segments/1397609537308.32/warc/CC-MAIN-20140416005217-00448-ip-10-147-4-33.ec2.internal.... |
Unfolding and Reconstructing Polyhedra
This thesis covers work on two topics: unfolding polyhedra into the plane and reconstructing polyhedra from partial information. For each topic, we describe previous work in the area and present an
array of new research and results. Our work on unfolding is motivated by the proble... | {"url":"https://uwspace.uwaterloo.ca/handle/10012/1037","timestamp":"2014-04-17T01:09:21Z","content_type":null,"content_length":"23525","record_id":"<urn:uuid:f4cd19b9-ce45-4356-8433-f60f2eb915a5>","cc-path":"CC-MAIN-2014-15/segments/1397609526102.3/warc/CC-MAIN-20140416005206-00460-ip-10-147-4-33.ec2.internal.warc.gz"... |
Key Strategies Brief
Five “Key Strategies” for Effective Formative Assessment
In order to build a comprehensive framework for formative assessment, Wiliam and Thompson (2007) proposed that three processes were central:
1. Establishing where learners are in their learning
2. Establishing where they are going
... | {"url":"http://www.nctm.org/news/content.aspx?id=11474","timestamp":"2014-04-19T15:34:53Z","content_type":null,"content_length":"46417","record_id":"<urn:uuid:e38f8c1c-6fd1-4842-bec5-007c2c698945>","cc-path":"CC-MAIN-2014-15/segments/1397609537271.8/warc/CC-MAIN-20140416005217-00246-ip-10-147-4-33.ec2.internal.warc.gz"... |
Key-value apply
From HaskellWiki
I just wrote this function:
apply :: (Ord k) => k -> v -> (v -> v) -> [(k,v)] -> [(k,v)]
apply k v f ds =
let (p1,px) = span ( (k >) . fst) ds
(p2,p3) = case px of
[] -> ((k,v),[])
(x:xs) -> if fst x == k
then ((k, f $ snd x), xs)
else (... | {"url":"http://www.haskell.org/haskellwiki/index.php?title=Key-value_apply&oldid=11329","timestamp":"2014-04-20T19:30:11Z","content_type":null,"content_length":"20977","record_id":"<urn:uuid:eea2ff9c-4dbf-4538-9123-eef64b868f13>","cc-path":"CC-MAIN-2014-15/segments/1397609539066.13/warc/CC-MAIN-20140416005219-00603-ip-... |