Mathblogging.orgRecent Postshttp://www.mathblogging.org/scripts/feed.php2015-10-13T18:54:56-04:00No copyright asserted over individual posts; see original posts for copyright and/or licensing.Mathblogging.org Atom serializerIs less publishing linked to more plagiarism?http://www.mathblogging.org/post/1310502015-10-13T11:30:01-04:00Alison AbritisCountries that publish less science appear to “borrow” more language from others than other, more scientifically prolific countries, according to a new small study. Using a novel approach of comparing a country’s total citations against its total published papers (CPP), the authors categorized 80 retractions from journals in general and internal medicine. This is a […]
The post Is less publishing linked to more plagiarism? appeared first on Retraction Watch.Simple sublinear Fourier sampling , the 400th implementation.http://www.mathblogging.org/post/1310512015-10-13T11:30:00-04:00Igor<br />Released a simple Matlab version of a sublinear sparse Fourier transform. https://t.co/uzJNzyFzHK— Anna C Gilbert (@annacgilbert) October 13, 2015 <br />Awesome ! I met Anna back in 2008 at Texas A&M University in what proved to be the beginning of many things in my mind and on this blog. I am proud to say that the 400th implementation made available by a researcher of an algorithm and listed here is that of Anna. It is on this Github page: <br /><br />Simple-sublinear-Fourier-samplingThis library of
[…]Can Arizona Seize the Future?http://www.mathblogging.org/post/1310522015-10-13T11:01:22-04:00clausAt a meeting of Arizona business leaders and other funders last week, a small group of Phoenix-area students stole the show. They described how participating in some of the nation's best STEM education programs--such as Project Lead the Way, FIRST Robotics, and Engineering is Elementary--had sparked their passion for STEM and changed their lives.Tags:  STEMworks, jobs & workforceThis Mysterious Charthttp://www.mathblogging.org/post/1310452015-10-13T11:00:00-04:00Jonathan ClaydonEvery year for many years now there's been an odd thing on my whiteboard.
Several times I've conducted staff development in my room and no one asks about it. My kids could tell you all about it though, it might be their favorite part of the room.It's a game. A very silly game. And for once, it's being played at max capacity with all my classes.How does it work? Well, I like to encourage community. My kids sit at six tables (rainbow colored because
[…]Open Data Science at University of Sheffieldhttp://www.mathblogging.org/post/1310462015-10-13T10:55:06-04:00Mike CroucherThe Sheffield Open Data Science Initiative The University of Sheffield Open Data Science Initiative (ODSI) is really starting to take off. So what is it? From the website, the aims of the ODSI are: Make new analysis methodologies available as widely and rapidly as possible with as few conditions on their use as possible (see the […]Edición 6.7: El punto del Carnaval de Matemáticas del 17 al 25 de octubrehttp://www.mathblogging.org/post/1310432015-10-13T10:29:00-04:00MatifutbolHola a tod@s.
Arranca una nueva edición del Carnaval de Matemáticas, la correspondiente a este mes de octubre.
En este caso está dedicada al punto, la partícula elemental sobre la que se construye toda la Geometría.
Espero vuestra participación en esta Edición 6.7: El punto, alojada en el blog Matifutbol.
¡Saludos!
Linear Programming (Graphical Method)http://www.mathblogging.org/post/1310492015-10-13T10:22:06-04:00Linear Programming Webmaster
The Graphical Method (graphic solving) is an excellent alternative for the representation and solving of Linear Programming models that have two decision variables. For this purpose there are computational tools that assist in applying the graphical model, like TORA, IORTutorial and Geogebra. Within this context we will present a series of Linear Programming exercises that have been […]
The post Linear Programming (Graphical Method) appeared first on Linear Programming.What do you learn from p=.05? This example from Carl Morris will blow your mind.http://www.mathblogging.org/post/1310442015-10-13T09:48:57-04:00AndrewI keep pointing people to this article by Carl Morris so I thought I’d post it. The article is really hard to find because it has no title: it appeared in the Journal of the American Statistical Association as a discussion of a couple of other papers. All 3 scenarios have the same p-value. And, […]
The post What do you learn from p=.05? This example from Carl Morris will blow your mind. appeared first on Statistical Modeling, Causal Inference, and Social Science.(Not) How to Write your First Paperhttp://www.mathblogging.org/post/1310422015-10-13T09:14:31-04:00edwardfhughes18 months ago I embarked on a PhD, fresh-faced and enthusiastic. I was confident I could learn enough to understand research at the coal-face. But when faced with the prospect of producing an original paper, I was frankly terrified. How on earth do you turn vague ideas into concrete results? In retrospect, my naive brain was … Continue reading (Not) How to Write your First Paper →Elsevier retracting nine papers for fake peer reviewhttp://www.mathblogging.org/post/1310392015-10-13T09:05:00-04:00Ivan OranskyThe fake peer review retraction count continues to mount. Elsevier is retracting nine papers from five journals because fake email addresses for reviewers were provided during submission of the original manuscripts. According to a statement from the publisher: Nine papers are being retracted from five Elsevier journals due to manipulation of the peer-review process that led […]
The post Elsevier retracting nine papers for fake peer review appeared first on Retraction Watch.Schoologyhttp://www.mathblogging.org/post/1310382015-10-13T08:36:00-04:00Simplifying RadicalsThis is my school district's first year in their 1-to-1 initiative called Project OLE (Olympian Learning Environment). Our mascot is an olympian. <br /><br /><br /><br />Because we are 1-to-1, I think it's time I try a learning management system in my classroom. At first I assumed that Google Classroom was the way to go. My IT showed me how to use Google Classroom and then mentioned Schoology. I know very little about either one, but decided to try Schoology because I hear it has more bells and
[…]10/13/15http://www.mathblogging.org/post/1310372015-10-13T08:30:22-04:00Unknown√(10 - 1) + 3 = 1 + 5Also:10 - 1 - 3 = 1 + 5Also:10 / (|1 - 3|) = 1 * 5Also:101 (mod 3) = √(|1 - 5|)5 Number Summary 5 Finger Summaryhttp://www.mathblogging.org/post/1310362015-10-13T08:29:00-04:00Sarah HaganLet's take a moment to reminisce. There aren't a ton of things I remember from first grade. I remember my teacher's name was Mrs. Charboneau. That was hard to spell as a first grader! We colored teddy bears on the first day of school. One of our assignments for the year was to count to 100 for our teacher. And, my favorite math worksheets were the ones that said 2 + box = 5.<br /><br />I also remember getting back worksheets about reading the time from a clock that […]Pufferfish planets could explain how hot Jupiters get so bighttp://www.mathblogging.org/post/1310412015-10-13T08:23:00-04:00UnknownMany of the gas giant planets we've seen orbiting other stars are up to twice as large as theory says they should be. A new class of planets could explain why<br clear='all'/><br/><br/><br/><br/><br/><br/><br/><br/><br/>Fibonacci numbers, arctangents, and pihttp://www.mathblogging.org/post/1310352015-10-13T08:00:55-04:00JohnHere’s an unusual formula for π. Let Fn be the nth Fibonacci number. Then As mysterious as this equation may seem, it’s not hard to prove. The arctangent identity shows that the sum telescopes, leaving only the first term, arctan(1) = π/4. To prove the arctangent identity, take the tangent of both sides, use the addition law for tangents, and […]Beauty Saloonhttp://www.mathblogging.org/post/1310342015-10-13T08:00:00-04:00Math TouristDoes that trim come with a brew? Tbilisi, Georgia, 2012.
Photo by I. PetersonOf Myths and Madness (...and Math)http://www.mathblogging.org/post/1310332015-10-13T07:11:00-04:00"Shecky Riemann"In a wonderful post last weekend Peter Rowlett talks about popular math myths and inaccuracies:
http://aperiodical.com/2015/10/mathematical-myths-legends-and-inaccuracies-some-examples/
My
favorite, of those cited, is the idea of Cantor being driven mad by the
Continuum Hypothesis, which is followed up on by Richard Zach here:
https://www.ucalgary.ca/rzach/blog/2009/09/logic-and-madness.htmlMicrofinance is mostly a scamhttp://www.mathblogging.org/post/1310302015-10-13T07:07:47-04:00Cathy O'Neil, mathbabeI might be well behind others on this subject, but I’m trying to catch up. I just finished a book entitled Confessions of a Microfinance Heretic: how microfinance lost its way and betrayed the poor, written by Hugh Sinclair. Published in 2012, it reviews the previous decade or so of microfinance institutions and how they are […]Two anecdotes on command economieshttp://www.mathblogging.org/post/1310312015-10-13T07:00:00-04:00JosephThis is Joseph<br /><br />Mark Evanier:<br />When I was a kid, one of the reasons we were taught that Communism was bad was that since there was no competition, there was no choice. The markets all sold the same kind of bread and the same kind of canned beans and the same kind of salad dressing…and if you didn't like it, too bad. You couldn't go to another store and find an alternative. For some reasons, people who think Communism is the greatest evil on the planet cheer on big companies getting bigger even
[…]Rugby World Cup Predictions for the Quarter Finalshttp://www.mathblogging.org/post/1310322015-10-13T06:39:29-04:00David ScottTeam Ratings for the Quarter Finals The basic method is described on my Department home page. Here are the team ratings prior to this week’s games, along with the ratings at the start of the Rugby World Cup. Current Rating Rating at RWC Start Difference New Zealand 26.96 29.01 -2.00 South Africa 23.39 22.73 0.70 […]ITM Cup Predictions for the ITM Cup Finalshttp://www.mathblogging.org/post/1310282015-10-13T06:36:36-04:00David ScottTeam Ratings for the ITM Cup Finals The basic method is described on my Department home page. Here are the team ratings prior to this week’s games, along with the ratings at the start of the season. Current Rating Rating at Season Start Difference Canterbury 11.81 10.90 0.90 Tasman 10.77 12.86 -2.10 Taranaki 10.39 7.70 […]Currie Cup Predictions for the SemiFinalshttp://www.mathblogging.org/post/1310292015-10-13T06:34:11-04:00David ScottTeam Ratings for the SemiFinals The basic method is described on my Department home page. Here are the team ratings prior to this week’s games, along with the ratings at the start of the season. Current Rating Rating at Season Start Difference Lions 6.09 3.04 3.00 Western Province 5.08 4.93 0.10 Blue Bulls 1.98 0.17 […]The real charm of imaginary numbershttp://www.mathblogging.org/post/1310272015-10-13T05:30:03-04:00Franca DriessenFew elementary mathematical ideas arouse the kind of curiosity and astonishment among the uninitiated as does the idea of the “imaginary numbers”, an idea embodied in the somewhat mysterious number i. This symbol is used to denote the idea of , namely, a number that when multiplied by itself yields -1. How come?
The post The real charm of imaginary numbers appeared first on OUPblog.
        Related StoriesDiamonds are forever, and so are
[…]Estadística que incordiahttp://www.mathblogging.org/post/1310402015-10-13T05:00:41-04:00^DiAmOnD^Esta semana cambiamos el habitual problema semanal por una cuestión que me ha planteado por mail Javier Serrrano (exacto, el creador de las camisetas matemáticas “que hacen cosas”). La cosa va de estadística. Un profesor de matemáticas está bastante atormentado desde el día en que les propuso a sus alumnos un examen con solamente estas […]Happy Birthday to the Navy!http://www.mathblogging.org/post/1310252015-10-13T03:30:00-04:00David10/13/2015<br /><br /><br /> <br /><br /><br /> This is a photo of the USS Constitution - She is the oldest ship in
[…]Necessary and Sufficient Condition for Integrability in finite measure spacehttp://www.mathblogging.org/post/1310262015-10-13T03:25:45-04:00mathtuition88URL: https://career-test.com/s/sgamb?reid=210 The results of this Personality Test is quite surprisingly accurate, do give it a try to see if you are a Careerist, Entrepreneur, Harmonizer, Idealist, Hunter, Internationalist or Leader? Do try out this Free Career Guidance Personality Test … Continue reading →A month in the life of personal location and messaging metadatahttp://www.mathblogging.org/post/1310242015-10-13T03:01:01-04:00Nathan YauData researcher and artist Mimi Onuoha looked at the personal location and messaging data from four groups of people in a project called Pathways. It's less about how much we…Tags: mobile, privacyLes primeres potèncieshttp://www.mathblogging.org/post/1310232015-10-13T01:14:00-04:00puntmatCom a últim post de la sèrie "els primers nombres primers" "els primers nombres quadrats" i "els primers nombres cúbics", presentem activitats que involucren a les primeres potències de base 2, 3, 4...<br /><br />1) Les primeres potències de base 2<br />Imatge extreta del llibre de 6è de Primària de l'Ed. BarcanovaA la proposta inicial, s'afegeixen després algunes preguntes: l'obtenció de cada nombre parell com a suma de potències de 2 és única?, quina targeta s'hauria d'afegir per obtenir tots els […]Random Features: Sketching for Large-Scale Learning of Mixture Models, Structured Transforms for Small-Footprint Deep Learning, Optical Beam Forming Network Tuninghttp://www.mathblogging.org/post/1310222015-10-13T01:00:00-04:00IgorThe following three papers talk about random features, the first one for sketching purposes, the second as a basis to develop a faster approximation and the third one to optimize a real world setup. <br /><br />Sketching for Large-Scale Learning of Mixture Models by Nicolas Keriven, Anthony Bourrier, Rémi Gribonval, Patrick Perez <br />Abstract : Learning parameters from voluminous data can be prohibitive in terms of memory and computational requirements. We propose a "compressive learning'' framework
[…]Is The Hot Hand Fallacy A Fallacy?http://www.mathblogging.org/post/1310212015-10-13T00:05:08-04:00RJLipton+KWReganA simple idea that everyone missed, and more? Composite of src1, src2, src3 —A myth of a myth of a myth? Joshua Miller and Adam Sanjurjo (MS) have made a simple yet striking insight about the so-called hot hand fallacy. Today Ken and I want to discuss their insight, suggest an alternate fix, and reflect […]