Storing data in DNA is a lot easier than getting it back out
Humanity is creating information at an unprecedented rate—some 16 zettabytes every year (a zettabyte is one billion terabytes). And this rate is increasing. Last year, the research group IDC calculated that we’ll be producing over 160 zettabytes every year by 2025. All this data has to be stored, and as a result we need much denser memory than we have today. What’s impressive for computer scientists is the density of the data that DNA stores: a single gram can hold roughly a zettabyte. But nobody has come up with a realistic system for storing data in a DNA library and then retrieving it again when it is needed. Today that changes thanks to the work of Federico Tavella at the University of Padua in Italy and colleagues, who have designed and tested just such a technique based on bacterial nanonetworks. The principle is simple. Crucially, bacteria can transfer plasmids from one cell to another in a process known as conjugation. That’s the basis of the new technique.
Tagxedo - Word Cloud with Styles
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Resisting technology, Appalachian style
When people hear “Appalachia,” stereotypes and even slurs often immediately jump to mind, words like “backwards,” “ignorant,” “hillbilly” or “yokel.” But Appalachian attitudes about technology’s role in daily life are extremely sophisticated – and turn out to be both insightful and useful in a technology-centric society. Many Americans tend to view Appalachian life as involving deprivation and deficit. This can be particularly pointed regarding technology: Rural residents are frequently neglected in research on technology use, and where they are included, the data usually focus on the lower rates of ownership and use of smartphones and laptop computers in rural areas. Articles can come across as scholars and reporters saying something like, “Poor rural Appalachians – they don’t even own the newest iPhone!” It’s true that many rural areas aren’t served with the fastest broadband and the most robust cellular coverage in the U.S. Skepticism and caution Using humor to express concerns
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No, You Can’t Use My Photo for Your Fake Identity, and No, I Can’t Prevent It
That’s my photo, but that’s not my name or occupation. My mug has been hijacked by someone pretending to be someone who does not exist. Like many of you, I had no idea this kind of thing went on. It’s called Catfishing. Welcome to the dark underbelly of openness. I’ve read with the greatest respect how Alec Couros has dealt with this. It’s happened a lot to Dean Shareski, too. Maybe it’s just Canadian educators who’s photos get stolen to create fake online identities to lure woman on dating sites to somehow con them. It’s the kind of thing that makes you say ‘GROSSSSSS’. My number came up today; a fellow flickr user sent me a message to say she had seen my photos reported on romancescam as some dude named David Frederickson (not the most suave non de plume -why is it not Dirk Savage, or Hank Grockman), with links on Facebook and LinkedIn. This is the photo David is using to be me. creative commons licensed ( BY-SA ) flickr photo shared by cogdogblog But what I can do is ask for help and
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Random picker wheel - Spin the wheel and let it decide
What is this tool? This is a picker wheel that spins and picks a random word based on your input. Fun and useful! Let's say you're a teacher and all of your students have to hold a presentation today. Who will go first? You can start at the top of your student list, but then the same students always have to start first, plus you don't always have your student list within reach. There are more examples in which you could use a wheel: A challenge with friends and you want to decide who goes first.Playing a board game with the family. How can I use it? How to use the wheel should speak for itself, but we've made a quick tutorial.First, to set up a new wheel: Scroll down to the 'Edit wheel' section.In the text box, you can edit the words or names that are displayed on the wheel. Can I share or save it? As soon as you add new names, words, places, brands and update the wheel a new share URL will be generated. Do you want to save your wheels to your account?
Lessons learned from social media identity theft - Regina
MOOSE JAW – Kathy Cassidy has over a dozen followers in her grade one classroom at Westmount Elementary School in Moose Jaw. Online, she has over 8,000. But that popular identity was stolen. “The first feelings are panic and betrayal,” Cassidy said. “You feel so vulnerable.” An imposter quickly gained hundreds of Twitter followers, while posting crude and offensive things that Cassidy – a classroom technology advocate – never would. “It had the same photo, the same header, same background picture, the same biography, the same links,” she said. “The only thing different was the username.” Duplicating an online profile only takes seconds, according to Alec Couros. The social media expert and University of Regina professor says a well-known identity on the web not only fuels impersonation, but is also the solution. “To be able to say, ‘I know this person, I know that’s not this person who is online, that you’re being impersonated,’ is the number one skill to have,” said Couros. 1. 2. 3.
Why algorithms can’t save us from trolls and hate speech
Pete Ryan In the early days of the popularization of the Internet, there was a debate about whether to make online digital experiences seem either casual and weightless or serious with costs and consequences. And there ended up being a massive desire to create the illusion of weightlessness. In the service of weightlessness, Internet retailers would not pay the same sales taxes as brick-and-mortar ones. The result was a mad rush to corral users at any cost, even at the cost of caution and quality. Gamergate turned out to be a prototype, rehearsal and launching pad for the alt-right. One of the consequences of the weightless Internet — first emerging in alt.usenet groups — was an explosion of cruel nonsense. For years, Gamergate was only a plague within digital culture, but by 2016 its legacy was influencing elections, particularly one in the US. Fortunately, more precise terms are available. Do we really want to privatize the gatekeeping of our public space for speech?
Online Spinner
Super Spinner Click the wheel below to spin: You can customize your own spinner with your own labels using the tools below the spinner. You can save your spinner for later use by either copying the address from the browser or by using the sharing buttons embedded on this page. Here are some example spinners: 5 Point Spinner Decision Maker What's For Dinner? Customize This Spinner: Choose a color scheme: Copyright 2021 Superteachertools.com AddThis Sharing Sidebar Share to TwitterShare to Facebook , Number of shares Share to Google ClassroomShare to EmailMore AddThis Share options , Number of shares6.7K Hide Show AddThis AddThis Sharing
