Tributary uses d3.js and SVG to provide graphics rendering capabilities. All tributary really does is provide an svg element. When the code in the editor is changed, the svg element is emptied and the code is evaluated. The assumption here is that the code will draw something in the svg element. The editor has been modified so that whenever you click on a number or a color string an interactive slider or color picker will pop up. Moving the slider will modify the number and redraw (by re-executing the code for each number change) automatically, allowing you to quickly see how a certain value affects your visualization.
Besides d3.js, tributary code snippets have access to Underscore.js and Backbone.js as well as jQuery. The code editor is powered by CodeMirror, with the color picker powered byColor Picker and the sliders powered by jQuery UI.
This project excites me everyday, mostly because it makes coding a much more interactive experience which also makes it much easier to code with other people. Because you get instant visual feedback it’s also possible to code live in front of other people in a way that wasn’t exciting before. As a teaching tool your words come alive as you type out the code and as a rapid prototyping tool you can iterate quickly with a domain expert as they suggest changes or ask interesting questions.
With all the attention being given to Virgin Galactic's impressive list of future celebritynauts (Ashton! Branson! Beiber!), its spaceship's impressive capabilities for microgravity research have been largely overlooked.
The private space plane, called SpaceShipTwo, is set to begin carrying passengers to the edge of space on suborbital rides in 2014. Already, 600 people have signed up for flights, including actors Ashton Kutcher and Angelina Jolie, singers Justin Beiber and Katy Perry, and Virgin Galactic's celebrity founder himself, Sir Richard Branson.
SpaceShipTwo has 500 cubic feet (14 cubic meters) of interior space available for experiments, the most of any of the crewed suborbital vehicles now under development. The passenger cabin can fit the equivalent of 20 space shuttle mid-deck locker equivalents as well as a flight test engineer who will run experiments.
The Guardian Royal baby rumbled: the science behind a royal birth The Guardian The Duchess of Cambridge very recently gave birth to a baby boy. This has caused much of the UK media and beyond to go into overdrive as the story develops.
Reegan Bourgeois's insight:
Stop the presses! A WOMAN had a BABY somewhere in the world. Definitely makes for big time news. Sometimes I wonder how we made it this far...
We’re in the midst of a bionic revolution, yet most of us don’t know it. One of the definitions of sanity is the ability to tell real from unreal.
Robotics, Cyborgs, Augmented Reality, Synthetic Biology, Artificial Intelligence, and human enhancement technologies are only some of the fields, which are changing the ‘situation’ to which we need construct a new model of reality.
The world to which we were accustomed and through which we ‘made sense’ and constructed awareness to is no longer.
We may not realize the immediate implications of these technologies, but make no mistake, as soon as sense extensions become a widespread phenomena (and we believe that is soon) our Situational awareness will change accordingly and the theory of mind we each construct and carry will be altered irrevocably.
LMU microbiologist PD Dr. Ralf Heermann and Professor Helge Bode of the Goethe-University in Frankfurt have just reported the discovery of a previously unknown bacterial "language". Their findings are detailed in the latest issue of the journal Nature Chemical Biology. "Our results demonstrate that bacterial communication is much more complex than has been assumed to date," Heermann says.
The bacterial communication system that is currently best understood uses N-acylhomoserine lactones (AHLs) as signals. These compounds are made by enzymes that belong to the group of LuxI-family synthases. Transmitting cells secrete the signal and neighboring cells recognize the concentration via a LuxR-type receptor. Signal perception changes the pattern of gene expression in the receiving cells, which results in alterations in their functional properties or behavior. However, many bacteria have LuxR receptors but lack any LuxI homolog, so that they cannot produce AHLs. These receptors are referred to as LuxR solos.
Ralf Heermann and Helge Bode have now discovered a type of ligand that binds to LuxR solos. As model system, they chose the species Photorhabdus luminescens, a pathogenic bacterium that is lethal to insects.
"We have identified a new class of bacterial signaling molecules, which are produced by a previously unknown biochemical route," explains Helge Bode, Merck Professor of Molecular Biotechnology at Goethe-Universität Frankfurt. It turns out that a LuxR solo of this bacterium responds to compounds called alpha-pyrones, specifically to photopyrones. Furthermore, the researchers have identified the pyrone synthase (PpyS) that catalyzes the biosynthesis of photopyrones. The pyrone-based signaling system allows the bacteria to recognize one another, whereupon they produce a surface factor that causes cell clumping. Heermann and Bode assume that this collective behavior makes the cells less vulnerable to the insect's innate immune system, and then allows them to kill their victims by the production of various of toxins." P. luminescens is a useful model organism, because it is related to many human pathogens, including coliform bacteria such as enterohemorrhagic E. coli (EHEC) and well as plague bacteria," Heermann points out.