to your HTML Add class="sortable" to any table you'd like to make sortable Click on the headers to sort Thanks to many, many people for contributions and suggestions. Licenced as X11: http://www.kryogenix.org/code/browser/licence.html This basically means: do what you want with it. */ var stIsIE = /*@cc_on!@*/false; sorttable = { init: function() { // quit if this function has already been called if (arguments.callee.done) return; // flag this function so we don't do the same thing twice arguments.callee.done = true; // kill the timer if (_timer) clearInterval(_timer); if (!document.createElement || !document.getElementsByTagName) return; sorttable.DATE_RE = /^(\d\d?)[\/\.-](\d\d?)[\/\.-]((\d\d)?\d\d)$/; forEach(document.getElementsByTagName('table'), function(table) { if (table.className.search(/\bsortable\b/) != -1) { sorttable.makeSortable(table); } }); }, makeSortable: function(table) { if (table.getElementsByTagName('thead').length == 0) { // table doesn't have a tHead. Since it should have, create one and // put the first table row in it. the = document.createElement('thead'); the.appendChild(table.rows[0]); table.insertBefore(the,table.firstChild); } // Safari doesn't support table.tHead, sigh if (table.tHead == null) table.tHead = table.getElementsByTagName('thead')[0]; if (table.tHead.rows.length != 1) return; // can't cope with two header rows // Sorttable v1 put rows with a class of "sortbottom" at the bottom (as // "total" rows, for example). This is B&R, since what you're supposed // to do is put them in a tfoot. So, if there are sortbottom rows, // for backwards compatibility, move them to tfoot (creating it if needed). sortbottomrows = []; for (var i=0; i
Grant Sanderson has released a new 3Blue1Brown video on simulating an epidemic, in which, he presents a number of different scenarios that can affect how fast an infectious disease might spread using the math for a basic SIR epidemic model. Those scenarios include variations on the following strategies for avoiding contact with people who are carrying the SARS-nCoV-2 coronavirus, which have become familiar to many around the world:
Here's the 23-minute video, which is well worth watching because of the insights it provides into how effective each of these strategies may be on their own.
But wait, that's not all! What if you wanted to test drive your own SIR epidemic model?
In the following 22-minute Numberphile video, Brady Haran and Ben Sparks build a SIR epidemic model from scratch using GeoGebra's online graphing calculator's capabilities, which makes the video also a "how-to" presentation for making your own epidemic model from scratch:
The GeoGebra SIR model Ben Sparks created in the video is available here. If you want to get your own Numberphile-style brown butcher paper background for your model though, you're on your own....
Labels: coronavirus, math
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