Prusik Knot | How to tie the Prusik Knot | Climbing Knots
History: The Prusik knot was developed in 1931 by Dr.Karl Prusik (sometime president of the Austrian Mountaineering Club and often misspelled "Prussik".) It appears to be identical in structure to a knot described by Ashley for hoisting a spar. (ABOK # 1763, p 300), but Ashley did not name this knot and did not describe the slide and grip feature. The knot requires a "Prusik Loop" Uses: Its principal use is allowing a rope to be climbed - ascending or "Prusiking". Making Prusik Loops: Prusik loops are constructed by joining together the two ends of accessory cord (5 or 6 mm) using a Double Fisherman's (or a Triple Fisherman's). Choosing a length: Many factors govern the length of rope used to make a Prusik Loop; what it will be used for; the number of wraps that will used in the Prusik Knot; the diameters of the ropes; and, the height of the user. The Klemheist The Bachmann Knot
weird things customers say in bookshops
I love our customers, I really do. But some days we get some strange people in our shop. Here are some gems I'd like to share. Customer:: Hi... erm... are you a library? Customer: Excuse me, do you have any signed copies of Shakespeare plays?Me: Er... do you mean signed by the people who performed the play? Customer: Hi, I'd like to return this book, please. Person: Hi, I'm looking for a Mr. on the phoneMe: Hello Ripping Yarns.Customer: Do you have any mohair wool? Customer: Hi, if I buy a book, read it, and bring it back, could I exchange it for another book? Me: Ok, so with postage that brings your total to £13.05. Pizza Delivery Man [entering the shop with a large pile of pizzas and seeing me, the only person in the bookshop]: Hi, did you order fifteen pizzas? Me: Hello, Ripping Yarns BookshopMan: Hello, is that Ripping Yarns? Customer: Hello, I'd like a copy of 'The Water Babies,' with nice illustrations. Customer: Do you sell ipod chargers? Man: Hi, I've just self-published my art book.
RegExp - MDN Docs
Description Literal notation and constructor There are two ways to create a RegExp object: a literal notation and a constructor. The literal notation takes a pattern between two slashes, followed by optional flags, after the second slash.The constructor function takes either a string or a RegExp object as its first parameter and a string of optional flags as its second parameter. The following three expressions create the same regular expression object: const re = /ab+c/i; // literal notation // OR const re = new RegExp("ab+c", "i"); // constructor with string pattern as first argument // OR const re = new RegExp(/ab+c/, "i"); // constructor with regular expression literal as first argument Before regular expressions can be used, they have to be compiled. The literal notation results in compilation of the regular expression when the expression is evaluated. Use a string as the first argument to the RegExp() constructor when you want to build the regular expression from dynamic input. RegExp()
How digital detectives deciphered Stuxnet, the most menacing malware in history
It was January 2010, and investigators with the International Atomic Energy Agency had just completed an inspection at the uranium enrichment plant outside Natanz in central Iran, when they realized that something was off within the cascade rooms where thousands of centrifuges were enriching uranium. Natanz technicians in white lab coats, gloves, and blue booties were scurrying in and out of the "clean" cascade rooms, hauling out unwieldy centrifuges one by one, each sheathed in shiny silver cylindrical casings. Any time workers at the plant decommissioned damaged or otherwise unusable centrifuges, they were required to line them up for IAEA inspection to verify that no radioactive material was being smuggled out in the devices before they were removed. The technicians had been doing so for more than a month. Normally Iran replaced up to 10 percent of its centrifuges a year, due to material defects and other issues. The question was, why? The story of Stuxnet might have ended there.
The Lego Barad-dûr: 50,000 pieces, 2 months to build, pure awesome
"I can't exactly tell you how many parts are in the model, but I ordered about 25,000, and the same amount of parts came from my own stock," Kevin Walter told Ars. "My final guess is more than 50,000." I first saw the images of his Lego model of Barad-dûr when another member of the staff posted images while we talked about stories we were working on. Walter began work on the model in late 2010, and the actual construction took around two and a half months. "But the ultimate challenge was just a small part of the tower—the two small towers on the corners with their hexagonal shape—I needed over two weeks of continuing tries and fails, before I got the final solution for it," he said. The tower was actually part of a larger effort between 15 people from five different countries, all for a community website where people share their Lego creations. Walter was happy with his choice to create the Barad-dur.
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Tamaskan Dog
The Tamaskan Dog is a crossbred dog of sleddog type, originating from Finland, and as of 27 November 2013, has been recognized by the American Rare Breed Association, and the Kennel Club of the United States of America, two related dog fancier and pedigree registries.[1][2] It is a highly versatile dog that can excel in agility, obedience and working trials. It is also capable of pulling sleds, which is inherited from its Siberian Husky and Alaskan Malamute ancestors. Morphologically, Tamaskans have been bred to look like wolves and have a notable lupine appearance. Although there are a little over 400 registered Tamaskan Dogs worldwide, increasing interest has resulted in their spread throughout continental Europe, the UK and the USA, as well as Canada and Australia. Description[edit] A Tamaskan puppy Tamaskans are large, athletic dogs; slightly taller in size than German Shepherds. Temperament[edit] Two off-leash Tamaskan dogs Health[edit] An adult female History[edit] A Tamaskan
Understanding XML Namespaces
Aaron Skonnard DevelopMentor Updated July 2002 "Understanding XML Namespaces," by Aaron Skonnard first appeared in MSDN Magazine, July 2001. This updated version is used with permission. Copyright © 2001 Microsoft Corp. and CMP Media LLC. Namespaces are the source of much confusion in XML, especially for those new to the technology. The rest of this column is dedicated to answering these three questions, both syntactically and abstractly. What Is a Namespace? A namespace is a set of names in which all names are unique. Namespaces make it easier to come up with unique names. Before a new name is added to a namespace, a namespace authority must ensure that the new name doesn't already exist in the namespace. Namespaces themselves must also be given names in order to be useful. Figure 1. Of course, this assumes that the namespace names are also unique. California.AcmeHardware.Paint Utah.AcmeHardware.Paint MicrosoftWindowsOperatingSystemPaintApplication Namespaces in Programming Languages
