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3:49 PM | BD2K Training program FOAs

From NIH/NCI: The NIH Big Data to Knowledge (BD2K, http://bd2k.nih.gov/) initiative announces the release of three related RFAs for new training programs and revisions to existing training programs in biomedical Big Data Science: Predoctoral Training in Biomedical Big Data Science (T32) (NOT-HG14-004) Revisions to Add Biomedical Big Data Training to Active Institutional Training Grants (T32) (NOT-HG14-005) [...]

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From the NSF: The National Science Foundation (NSF) Division of Mathematical Sciences (DMS) aims to enhance the synergistic relationships between the mathematical sciences and other NSF-supported disciplines through the Mathematical Sciences Innovation Incubator (MSII) activity. The MSII activity encourages and supports new research collaborations among mathematical scientists and other scientists and engineers working in NSF-supported [...]

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3:36 PM | good work by an outstanding student

leaving only the “typing it up worse for the net” to me… the -set homework i’m about to loosely base my plain-text solutions on is quite a lovely thing to look upon… as my versions will not be. now. make it so. 6.1.3 Let a/b, a’/b’, and a”/b” be consecutive fractions in the Farey sequence […]

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Back in December, the University of Kansas issued a public censure of a former water researcher who, the school says, engaged in a pattern of plagiarism and other shoddy publishing practices. Marios Sophocleous, who’d held the position of senior scientist at the Kansas Geological Survey: has been found to have engaged in scholarly misconduct, relating […]

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3:30 PM | Minus Signs

Probability I Get the Right Answer vs. Number of Minus Signs I Need to Cancel Continue reading →

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3:30 PM | "Knowing Alongside"

I was briefly observing a classroom yesterday where some students were discussing what they thought "congruent" meant. In particular, they were trying to determine if two figures were congruent....which led to some theory building about when figures could be considered congruent or not congruent, more generally.One student had constructed (what I thought to be) a very interesting theory. His theory was (and I'm paraphrasing [...]

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Active Subspace: Towards Scalable Low-Rank Learning, Guangcan Liu and Shuicheng YanWe address the scalability issues in low-rank matrix learning problems. Usually, these problems resort to solving nuclear norm regularized optimization problems (NNROPs), which often suffer from high computational complexities if based on existing solvers, especially under large-scale settings. Based on the fact that the optimal solution matrix to an NNROP is often low-rank, we revisit the classic mechanism of
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3:22 PM | Finding E Maths or A Maths Difficult?

Are you finding Elementary Maths (E Maths) or Additional Maths (A Maths) Difficult? Do not be discouraged if you find E Maths or A Maths difficult. The main reason why you are finding it to be difficult is that it is new. … Continue reading →

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3:10 PM | Maria Droujkova - Make Math your Own

This morning I listened to a recording of Maria Droujkova giving a keynote address at the Learning Revolution Conference Online. The title of her talk was "From adventurous learning to disruptive innovations: brave design in mathematics education." Here's her description of the talk:
Robert Lang is building a space telescope as long as the island of Manhattan. His out-of-the-box origami play helped to figure out how to fold the telescope into a rocket’s tiny storage box. Vi Hart is a
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3:00 PM | Teaching, Conceptualizing, Common Core

As much as I try to avoid the primary/secondary education debates, I'd feel remiss if I didn't pass along two of the pieces from this morning's Web:1) California teacher Fawn Nguyen interviewed by Cathy O'Neil on Common Core:http://mathbabe.org/2014/04/23/interview-with-a-high-school-math-teacher-on-the-common-core/2) Grant Wiggins on "conceptual understanding" (longread +comments):http://grantwiggins.wordpress.com/2014/04/23/conceptual-understanding-in-mathematics/Fascinating (to me) how […]

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There are plenty of old writers, poets, and playwrights whose works have stood the test of time—pieces that literary gurus still analyze and quote, and call “classics.” But few have remained so prominent that they have been a common household name for over 400 years. This year is the 450th anniversary of his birth. 450 [...]

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2:45 PM | New Books Using Wolfram Technologies

Mathematica and Wolfram|Alpha are powerful technologies for deepening students’ and researchers’ understanding of complex topics in math and science. These recently published books incorporate engaging Mathematica and Wolfram|Alpha examples and code into texts written for undergraduates, graduate students, and researchers. Composite Materials in Piping Applications: Design, Analysis and Optimization of Subsea and Onshore Pipelines Dimitrios [...]

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Because zipper logic is a graph rewriting system which does not use variable names, just like GLC and chemlabda, it needs ways to multiply, distribute or kill things. See Chemlambda, universality and self-multiplication for multiplication, distribution or propagation phenomena. In this post we shall see how zipper combinators die or are born, depending on the sense […]

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2:08 PM | Raising the Bar

If you’re looking for something to do next Tuesday evening here in New York, an event called Raising the Bar has recruited 50 people to give talks at bars around the city. There are some quite interesting talks on the … Continue reading →

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Folded DNA makes a 3-D nanostructure that is embedded with lipid molecules. Courtesy Wyss. The lipid molecules attached to the DNA nanostructure act as handles to direct the assembly of a lipid bilayer around the structure. Courtesy Wyss. The end product is a totally lipid bilayer nanostructure that cloaks the DNA nanostructure from an organism's immune system. Courtesy Wyss. Enveloped viruses (bottom) coat themselves with lipids. New lipid-coated DNA nanodevices (top) closely resemble […]

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[Cross-posted from mathbabe.org, Cathy O'Neil's blog.]Today’s post is an email interview with Fawn Nguyen, who teaches math at Mesa Union Junior High in southern California. Fawn is on the leadership team for UCSB Mathematics Project that provides professional development for teachers in the Tri-County area. She is a co-founder of the Thousand Oaks Math Teachers’ Circle. In an effort to share and learn from other math
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principemelon:
karaniwangbinatilyo:
THE SECRETS OF NATURE
Cool posters. Too bad string theory is a joke.

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Esercizi da svolgere sulle disequazioni e sistemi di 2 grado leggi articolo completo

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A group of researchers in Tokyo has lost their 2013 article in the Journal of Crystal Growth over commercial interests — which don’t appear to be their own. We’ll explain. The article, “Interactions between planar defects in bulk 3C-SiC,” came from a team consisting of a researcher at Keio University and scientists at two companies, […]

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The use of the concepts of identity and teridentity is not to identify a thing-in-itself with itself, much less twice or thrice over — there is no need and therefore no utility in that. I can imagine Peirce asking, on Kantian … Continue reading →

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1:22 PM | Dangerous graphs

Is there a worst-possible paradox and if so what is it? In this post I’ll discuss an open question about graphs, whose answer, if we could answer it, might tell us what is the worst-possible paradox. Most people have come across the Liar Paradox at some point or other, whether in an academic journal, or [...]

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Someone wrote in: We are about to conduct a voting list experiment. We came across your comment recommending that each item be removed from the list. Would greatly appreciate it if you take a few minutes to spell out your recommendation in a little more detail. In particular: (a) Why are you “uneasy” about list […]The post Thinking of doing a list experiment? Here’s a list of reasons why you should think again appeared first on Statistical Modeling, Causal Inference,
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An extension of Einstein's gravity would let us build a wormhole – if we could send messages to invisible aliens via space-time ripples

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12:58 PM | Ripetizioni

Cerchi assistenza in Matematica generale ed applicata? Compila il seguente modulo.

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12:57 PM | Talk like Shakespeare day

Mark, 'tis 'Talk Liketh Shakespeare Day!' Then come, good fellows, and let us dream of dragons and finless fish, take but a moment and speak of clip-winged griffins and a ramping cat. The youth of England are on fire, and though men may sleep, some have knives with edges. Such...

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12:54 PM | Getalpatronen

We wisten al:12²=144 en 21²=441 en net zo voor 13.Maar dan houd het wel op... of toch niet?112²=12544 en 211²=445211112²=1236544 en 2111²=445632111112²=123476544 en 21111²=445674321Enz...:-)Of toch niet?111111111112²=12345679012543209876544211111111111²=44567901234520987654321Helaas...:-)Maar de mooiste blijft toch deze:1²=111²=121111²=123211111²=123432111111²=123454321111111²=123456543211111111²=123456765432111111111²=123456787654321111111111²=12345678987654321..en dan ook […]

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IX Summer School
"Achievements and Applications of Contemporary Informatics,
Mathematics and Physics"
(AACIMP - 2014)
August 3-16, 2014, Kyiv (Ukraine), website: http://summerschool.ssa.org.ua.
We are glad to announce the opening of the registration for the Ninth
Summer School "Achievements and Applications of Contemporary
Informatics, Mathematics and Physics" (AACIMP-2014). This year four
streams are being launched: Operational Research, Applied Computer
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12:14 PM | skyndimynd frá Íslandi (#2)

Filed under: Kids, Mountains, pictures, Travel Tagged: AISTATS 2014, ashes, Dyrhólaey, Iceland, Vik

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12:07 PM | Interalia: From strings to sculpture

Interalia is a show by Turner Prize winning artist Grenville Davey and theoretical physicist David Berman.
When I went to see Interalia yesterday afternoon I
managed to walk past the gallery twice, before an extremely helpful
passer by finally pointed me in the (obvious) right direction. This worried me:
if I can't even find the gallery, will I be equally unperceptive when
it
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A large chunk of machine learning (although not all of it) is concerned with predictive modeling, usually in the form of designing an algorithm that takes in some data set and returns an algorithm (or sometimes, a description of an algorithm) for making predictions based on future data. In terminology more friendly to the philosophy […]

Bailey, D., Borwein, J., de Prado, M.L. & Zhu, Q. (2014). Pseudo-Mathematics and Financial Charlatanism: The Effects of Backtest Overfitting on Out-of-Sample Performance, Notices of the American Mathematical Society, 61 (5) 458. DOI: 10.1090/noti1105

Citation

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Here the monotonicity of the EM algorithm is established. $$ f_{o}(Y_{o}|\theta)=f_{o,m}(Y_{o},Y_{m}|\theta)/f_{m|o}(Y_{m}|Y_{o},\theta)$$ $$ \log L_{o}(\theta)=\log L_{o,m}(\theta)-\log f_{m|o}(Y_{m}|Y_{o},\theta) \label{eq:loglikelihood} $$ where \( L_{o}(\theta)\) is the likelihood under the observed data and \(L_{o,m}(\theta)\) is the likelihood under the complete data. Taking the expectation of the second line with respect to the conditional distribution of
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Ruslan R Salakhutdinov, Sam T Roweis & Zoubin Ghahramani (2012). On the Convergence of Bound Optimization Algorithms, arXiv, arXiv: 1212.2490v1

Wu C.F.J. (1983). On the Convergence Properties of the EM Algorithm, The Annals of Statistics, 11 (1) 95-103. DOI: 10.1214/aos/1176346060

McLachlan G. & Peel D. DOI: 10.1002/0471721182

Citation

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by @ulaulaman about #exoplanets #planetary_transit #kepler_mission #nasa #astronomy The search for extrasolar planets (or exoplanets) had its first success in 1991 with the discovery of some planets orbiting around the pulsar PSR1257+12(1, 2, 3), measuring the variations of the radio pulses coming from the star. The second important milestone in exoplanet research takes place in 1995, with the discovery around the star 51 Pegasi (a star like our Sun) of a Jupiter-like planet, found at a […]

Wolszczan, A. & Frail, D. (1992). A planetary system around the millisecond pulsar PSR1257 + 12, Nature, 355 (6356) 145-147. DOI: 10.1038/355145a0

Wolszczan, A. (1994). Confirmation of Earth-Mass Planets Orbiting the Millisecond Pulsar PSR B1257 + 12, Science, 264 (5158) 538-542. DOI: 10.1126/science.264.5158.538

Mayor, M. & Queloz, D. (1995). A Jupiter-mass companion to a solar-type star, Nature, 378 (6555) 355-359. DOI: 10.1038/378355a0

Borucki, W., Koch, D., Basri, G., Batalha, N., Brown, T., Caldwell, D., Caldwell, J., Christensen-Dalsgaard, J., Cochran, W., DeVore, E. & Dunham, E. (2010). Kepler Planet-Detection Mission: Introduction and First Results, Science, 327 (5968) 977-980. DOI: 10.1126/science.1185402

Lissauer, J., Fabrycky, D., Ford, E., Borucki, W., Fressin, F., Marcy, G., Orosz, J., Rowe, J., Torres, G., Welsh, W. & Batalha, N. (2011). A closely packed system of low-mass, low-density planets transiting Kepler-11, Nature, 470 (7332) 53-58. DOI: 10.1038/nature09760

George, S. (2011). Extrasolar planets in the classroom, Physics Education, 46 (4) 403-406. DOI: 10.1088/0031-9120/46/4/004

LoPresto, M. & McKay, R. (2005). An introductory physics exercise using real extrasolar planet data, Physics Education, 40 (1) 46-50. DOI: 10.1088/0031-9120/40/1/003

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Non voglio fare concorrenza alla splendida spiegazione di Amedeo o a quella tecnica di Corrado, ma mia sorella, leggendo il post di pancia scritto nella sera dell'annuncio di BICEP2, ha candidamente confessato di non aver capito cosa era accaduto quel giorno. E allora proviamoci, a raccontarlo. (da The Cartoon History of the Universe #1 di Larry Gonick)C'era una volta un'idea di universo, che era la Terra al centro, quindi il Sole, la Luna e gli altri pianeti e sullo sfondo le stelle fisse,
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Hubble E. (1929). A relation between distance and radial velocity among extra-galactic nebulae, Proceedings of the National Academy of Sciences, 15 (3) 168-173. DOI: 10.1073/pnas.15.3.168

Gamow G. (1948). The Evolution of the Universe, Nature, 162 (4122) 680-682. DOI: 10.1038/162680a0

Alpher R.A. & Herman R. (1948). Evolution of the Universe, Nature, 162 (4124) 774-775. DOI: 10.1038/162774b0

Alpher R., Bethe H. & Gamow G. (1948). The Origin of Chemical Elements, Physical Review, 73 (7) 803-804. DOI: 10.1103/PhysRev.73.803

Peebles P.J.E., Schramm D.N., Turner E.L. & Kron R.G. (1994). The Evolution of the Universe, Scientific American, 271 (4) 52-57. DOI: 10.1038/scientificamerican1094-52

McLeish T.C.B., Bower R.G., Tanner B.K., Smithson H.E., Panti C., Lewis N. & Gasper G.E.M. (2014). History: A medieval multiverse, Nature, 507 (7491) 161-163. DOI: 10.1038/507161a

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Much of my undergrad was spent studying physics, and although I still think that a physics background is great for a theorists in any field, there are some downsides. For example, I used to make jokes like: “soft isn’t the opposite of hard sciences, easy is.” Thankfully, over the years I have started to slowly […]

Lazer, D., Kennedy, R., King, G. & Vespignani, A. (2014). Big data. The parable of Google Flu: traps in big data analysis., Science, 343 (6176) 1203-1205. PMID: 24626916

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matthewmaddux tweeted: @MatthewMaddux

RT @numberphile: NEW VIDEOS --- Poincaré Conjecture http://t.co/sDaS6BweI8 and Ricci Flow http://t.co/ulc9Kvas2w

2014-04-23 22:32:53

andrescaicedo tweeted: @andrescaicedo

RT @edfrenkel: Proud and humbled to learn that I have been elected as a member of the American Academy of Arts & Sciences https://t.co/m72O…

2014-04-23 22:21:56

fawnpnguyen tweeted: @fawnpnguyen

RT @nathankraft1: http://t.co/UMyWjQ8E6F Ready for something amazing?

2014-04-23 22:11:57

jamesgrime tweeted: @jamesgrime

I got confused so made this Spotter's Guide to Alex Jones. http://t.co/QPdcKbzGIK

2014-04-23 22:08:40

profkeithdevlin tweeted: @profkeithdevlin

RT @AndrewRCoulson: Jim Stigler of @UCLA: interviews w/remedial comm coll stud's: math=memorization; a compulsion to calculate; conceptual …

2014-04-23 22:05:12

profkeithdevlin tweeted: @profkeithdevlin

RT @G4C: "When people really care about a project, it shines through in the game." @jesseschell @schellgames #G4C14

2014-04-23 22:04:10

MindAfterMath tweeted: @MindAfterMath

Examples of the Binary Search Algorithm http://t.co/HM6cD6a3yl #compsci #datascience #math #stem #mathchat

2014-04-23 22:00:34

rmathematicus tweeted: @rmathematicus

"Was Will a Copernican?" : A review essay of Dan Falk's "The Science of Shakespeare" http://t.co/LtqcKzguEi …

2014-04-23 21:57:45

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