- published: 23 Dec 2015
- views: 468343
Randomness is the lack of pattern or predictability in events. A random sequence of events, symbols or steps has no order and does not follow an intelligible pattern or combination. Individual random events are by definition unpredictable, but in many cases the frequency of different outcomes over a large number of events (or "trials") is predictable. For example, when throwing two dice, the outcome of any particular roll is unpredictable, but a sum of 7 will occur twice as often as 4. In this view, randomness is a measure of uncertainty of an outcome, rather than haphazardness, and applies to concepts of chance, probability, and information entropy.
The fields of mathematics, probability, and statistics use formal definitions of randomness. In statistics, a random variable is an assignment of a numerical value to each possible outcome of an event space. This association facilitates the identification and the calculation of probabilities of the events. Random variables can appear in random sequences. A random process is a sequence of random variables whose outcomes do not follow a deterministic pattern, but follow an evolution described by probability distributions. These and other constructs are extremely useful in probability theory and the various applications of randomness.
A pattern, apart from the term's use to mean "Template", is a discernible regularity in the world or in a manmade design. As such, the elements of a pattern repeat in a predictable manner. A geometric pattern is a kind of pattern formed of geometric shapes and typically repeating like a wallpaper.
Any of the five senses may directly observe patterns. Conversely, abstract patterns in science, mathematics, or language may be observable only by analysis. Direct observation in practice means seeing visual patterns, which are widespread in nature and in art. Visual patterns in nature are often chaotic, never exactly repeating, and often involve fractals. Natural patterns include spirals, meanders, waves, foams, tilings, cracks, and those created by symmetries of rotation and reflection. Patterns have an underlying mathematical structure; indeed, mathematics can be seen as the search for regularities, and the output of any function is a mathematical pattern. Similarly in the sciences, theories explain and predict regularities in the world.
Tadashi Tokieda is back, this time with Moiré Patterns. More with Tadashi: http://bit.ly/tadashi_vids Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Out thanks also to our Patreon supporters, especially: Jeff Straathof Ken Baron Today I Found Out Roman Urbanovski Joanna & Mehdi Christian Cooper Peggy Y John Buchan Bill Shillito Andrzej 'Yester' Fiedukowicz Ripta Pasay Ayliean OK Merli Spiked Math Filipe Junqueira RexDex Thomas Buckingham Peter Kær Susan Silver Lê Henry Reich Tracy Parry Stan Ciprian Tyler O'Connor Keith Vertrees Kristian Joensen Valentin Bry, Kas, Kay, Jay, Tor and Julie Buckley of Boston Michael George Greene Paul Bates Arnas Michael Surrago plusunim Elliptical pool table: https://youtu.be/4KHCuXN2F3I ...
random photo i've taken through the year sorry for the screen border things. couldn't sort that out
Simple but useful. It uses a series of local follow scripts and rotations to create a random movement and elliptical pattern.
The time-domain progression of the total electric field components of plane waves traveling in the +z direction with various polarizations. Specifically, linear, right hand circular and elliptical polarizations are shown. The convention used is as defined in the IEEE standard (not the one used in many optics book) http://en.wikipedia.org/wiki/Circular_polarization#First_convention:_From_the_point_of_view_of_the_source Also see below: Oblique Plane Wave Reflection From Half Space http://www.youtube.com/watch?v=0-koW8jm8Pw Radiation from a Circularly Tapered Dielectric Waveguide http://www.youtube.com/watch?v=EXvdruxTDKk Right Hand Circular Polarization (RHCP) Animation http://www.youtube.com/watch?v=jY9hnDzA6Ps Linear Polarization Animation http://www.youtube.com/watch?v=oDwqUgDFe9...
test pattern random
DEF CON 22 Hacking Conference Presentation By Dan Kaminsky Secure Random by Default
Here’s a great tip from Taylor Stein on how to accelerate your designs with patterns and user parameters in Fusion 360! Once your parameters are tied together, control the entire design with a few clicks. ► Get Fusion 360 | http://autode.sk/1OH7K3B SUBSCRIBE | http://autode.sk/11vxXeD FACEBOOK | http://autode.sk/19jII5A TWITTER | http://autode.sk/19jIJXc
Terrible DPA explanation and sharing my experience solving the side channel analysis challenge "piece of scake" from the rhme2 CTF. A real DPA tutorial by Colin O'Flynn: https://www.youtube.com/watch?v=OlX-p4AGhWs The ChipWhisperer AES tutorial: http://www.newae.com/sidechannel/cwdocs/tutorial.html ChipWhsiperer: http://newae.com/tools/chipwhisperer/ The DPA paper: https://www.rambus.com/introduction-to-differential-power-analysis-and-related-attacks/ rhme2 challenge files: https://github.com/Riscure/Rhme-2016 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Barton Damer describes how to create amazing intricate patterns quickly using the Pattern Brush in Adobe Illustrator. For the written tutorial go to www.gomediazine.com
This video shows the Elliptic Strobe running through some its "canned" light show patterns. That music you hear is zax from the Commodore 64 demo, "It's No Secret" by Abyss released in 1988. This product isn't sound-sensitive; the zax may be ignored or even muted if it pisses you off. This is the computer demo with some strange scroll text. The scroll text at the bottom of page 2 reads (in part): "...A ? TO EVERYONE: ONLY A F46607 WOULD REPLACE THE "S" WITH THE "Z" .. EX. WARES AND WAREZ. LAMERS AND LAMERZ. WHAT IS YOUR GUY'S GAY INCEST WITH THE "Z" KEY?..." :-O More info. on my website in the Elliptic Strobe's eval. at http://www.ledmuseum.jthz.com/41/elstrobe.htm by 01-09-13 {or, "09 Jan. 2013" or even, "Jan. 09, Twenty Stick-Boobs" if you prefer}.
Tadashi Tokieda is back, this time with Moiré Patterns. More with Tadashi: http://bit.ly/tadashi_vids Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Out thanks also to our Patreon supporters, especially: Jeff Straathof Ken Baron Today I Found Out Roman Urbanovski Joanna & Mehdi Christian Cooper Peggy Y John Buchan Bill Shillito Andrzej 'Yester' Fiedukowicz Ripta Pasay Ayliean OK Merli Spiked Math Filipe Junqueira RexDex Thomas Buckingham Peter Kær Susan Silver Lê Henry Reich Tracy Parry Stan Ciprian Tyler O'Connor Keith Vertrees Kristian Joensen Valentin Bry, Kas, Kay, Jay, Tor and Julie Buckley of Boston Michael George Greene Paul Bates Arnas Michael Surrago plusunim Elliptical pool table: https://youtu.be/4KHCuXN2F3I ...
random photo i've taken through the year sorry for the screen border things. couldn't sort that out
Simple but useful. It uses a series of local follow scripts and rotations to create a random movement and elliptical pattern.
The time-domain progression of the total electric field components of plane waves traveling in the +z direction with various polarizations. Specifically, linear, right hand circular and elliptical polarizations are shown. The convention used is as defined in the IEEE standard (not the one used in many optics book) http://en.wikipedia.org/wiki/Circular_polarization#First_convention:_From_the_point_of_view_of_the_source Also see below: Oblique Plane Wave Reflection From Half Space http://www.youtube.com/watch?v=0-koW8jm8Pw Radiation from a Circularly Tapered Dielectric Waveguide http://www.youtube.com/watch?v=EXvdruxTDKk Right Hand Circular Polarization (RHCP) Animation http://www.youtube.com/watch?v=jY9hnDzA6Ps Linear Polarization Animation http://www.youtube.com/watch?v=oDwqUgDFe9...
test pattern random
DEF CON 22 Hacking Conference Presentation By Dan Kaminsky Secure Random by Default
Here’s a great tip from Taylor Stein on how to accelerate your designs with patterns and user parameters in Fusion 360! Once your parameters are tied together, control the entire design with a few clicks. ► Get Fusion 360 | http://autode.sk/1OH7K3B SUBSCRIBE | http://autode.sk/11vxXeD FACEBOOK | http://autode.sk/19jII5A TWITTER | http://autode.sk/19jIJXc
Terrible DPA explanation and sharing my experience solving the side channel analysis challenge "piece of scake" from the rhme2 CTF. A real DPA tutorial by Colin O'Flynn: https://www.youtube.com/watch?v=OlX-p4AGhWs The ChipWhisperer AES tutorial: http://www.newae.com/sidechannel/cwdocs/tutorial.html ChipWhsiperer: http://newae.com/tools/chipwhisperer/ The DPA paper: https://www.rambus.com/introduction-to-differential-power-analysis-and-related-attacks/ rhme2 challenge files: https://github.com/Riscure/Rhme-2016 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Barton Damer describes how to create amazing intricate patterns quickly using the Pattern Brush in Adobe Illustrator. For the written tutorial go to www.gomediazine.com
This video shows the Elliptic Strobe running through some its "canned" light show patterns. That music you hear is zax from the Commodore 64 demo, "It's No Secret" by Abyss released in 1988. This product isn't sound-sensitive; the zax may be ignored or even muted if it pisses you off. This is the computer demo with some strange scroll text. The scroll text at the bottom of page 2 reads (in part): "...A ? TO EVERYONE: ONLY A F46607 WOULD REPLACE THE "S" WITH THE "Z" .. EX. WARES AND WAREZ. LAMERS AND LAMERZ. WHAT IS YOUR GUY'S GAY INCEST WITH THE "Z" KEY?..." :-O More info. on my website in the Elliptic Strobe's eval. at http://www.ledmuseum.jthz.com/41/elstrobe.htm by 01-09-13 {or, "09 Jan. 2013" or even, "Jan. 09, Twenty Stick-Boobs" if you prefer}.