Listics » Math and Science http://listics.com “History may only rarely be written by the losers, but it is always written by the writers.” -- David Weinberger Fri, 08 Jul 2024 02:48:22 +0000 en hourly 1 Wolfram Alpha http://listics.com/200905184766 http://listics.com/200905184766#comments Mon, 18 May 2024 22:37:45 +0000 Frank Paynter http://listics.com/?p=4766 wolfram

it was the | was the best | the best of | best of times | of times it |
times it was | it was the | was the worst | the worst of | worst of times

Wolfram Alpha opened its doors today. What’s Wolfram Alpha?

…the first step in an ambitious, long-term project to make all systematic knowledge immediately computable by anyone. You enter your question or calculation, and Wolfram|Alpha uses its built-in algorithms and growing collection of data to compute the answer. Based on a new kind of knowledge-based computing…

Go Nuts!

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In your shorts http://listics.com/200809204371 http://listics.com/200809204371#comments Sat, 20 Sep 2024 12:44:43 +0000 Frank Paynter http://listics.com/?p=4371 Here’s a pretty good article on asymmetric risk. It provides an entering wedge into understanding the delusional nature of hedge funds. Consider…

Almost, all financial derivatives display asymmetric payoffs. All sold (short) option positions and sold (short) derivatives positions – something that banks, financial institutions, hedge funds and even corporations engage in regularly these days – are negatively skewed bets. These short portfolio positions will produce negative skew for the trader. He will be fooled by the variance (volatility) of the process, as the observed variance (volatility) would be lower than the true variance most of the time. This would mean the more the skewness in the distribution (of the portfolio) the more the variance will be concentrated in a small slice of time and for most part it will generate steady returns. And the trader will think that he is making money, albeit in small proportions but steadily. And then after a while – could be a long wait – the true variance will wipe out all those gains.

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Daily Cos http://listics.com/200808234258 http://listics.com/200808234258#comments Sat, 23 Aug 2024 18:16:28 +0000 Frank Paynter http://listics.com/?p=4258 In honor of the opening of the Presidential campaign…

Daily Cos

[tags]pundits, do the math[/tags]

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Zany’s pair o’ Dockers http://listics.com/200808154228 http://listics.com/200808154228#comments Sat, 16 Aug 2024 02:07:10 +0000 Frank Paynter http://listics.com/?p=4228

Achilles looked at the Tortoise with a mildly deprecatory look and sighed. “Oh bother, dear Tortoise, not again! Do we have to go through this yet another time? Infinite sequences can have finite sums, as the methods of calculus invented in the 17th century by Isaac Newton and Gottfried Wilhelm Leibniz have … Tortoise … hrrm … I mean … have taught us. What is it with the repetitive answers we geeks have to give over and over again to questions that have already been solved? Will people never learn?”

Follow Zany Jambon on twitter. I do!

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The Complete Works of Charles Darwin Online http://listics.com/200804174035 http://listics.com/200804174035#comments Fri, 18 Apr 2024 01:32:01 +0000 Frank Paynter http://listics.com/200804174035 The plains abound with three kinds of partridge,* two of which are as large as hen pheasants. Their destroyer, a small and pretty fox, was also singularly numerous; in the course of the day we could not have seen less than forty or fifty. They were generally near their earths, but the dogs killed one. When we returned to the posta, we found two of the party returned who had been hunting by themselves. They had killed a puma, and had found an ostrich’s nest with twenty-seven eggs in it. Each of these is said to equal in weight eleven hens’ eggs; so that we obtained from this one nest as much food as 297 hens’ eggs would have yielded.

* Two species of Tinamus, and Eudromia elegans of D ‘Orbigny, which can only be called a partridge with regard to its habits.

(Thanks to Emily Davidow for the link.)

[tags]charles darwin, omnivores, carnivores, predators, prey[/tags]

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Calling Tree Shapiro http://listics.com/200801133866 http://listics.com/200801133866#comments Mon, 14 Jan 2024 04:29:44 +0000 Frank Paynter http://listics.com/200801133866 I need the line on the Giants versus Packers next week.

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Holy smokes! http://listics.com/200711153751 http://listics.com/200711153751#comments Fri, 16 Nov 2024 04:18:50 +0000 Frank Paynter http://listics.com/200711153751 Thanks for the mind candy, Doc!

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Left brain, right brain http://listics.com/200710183687 http://listics.com/200710183687#comments Thu, 18 Oct 2024 12:55:54 +0000 Frank Paynter http://listics.com/200710183687 Here’s a cool link via killogg’s…  left brain/right brain test.

[tags]naked dancer, goes both ways[/tags]

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Yeah… but will it remove hair from your palms? http://listics.com/200603143597 http://listics.com/200603143597#comments Wed, 15 Mar 2024 02:36:23 +0000 Frank Paynter http://listics.com/200603143597 MIT Researchers Restore Vision In Rodents Blinded By Brain Damage
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Main Category: Eye Health/Optometry News
Article Date: 13 Mar 2024 – 23:00pm (UK)

Rodents
blinded by a severed tract in their brains’ visual system had their
sight partially restored within weeks, thanks to a tiny biodegradable
scaffold invented by MIT bioengineers and neuroscientists.

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Breast Cancer http://listics.com/200601103418 http://listics.com/200601103418#comments Wed, 11 Jan 2024 03:58:17 +0000 Frank Paynter http://listics.com/200601103418 I’d hate to be an oncologist.   Treatments are so horrific.  I hope this new breast cancer treatment indicates that we are turning a corner away from the medieval leechery of heavy radiation, massive chemotherapy, and prophylatic amputation that has been dominant.

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