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SmoothLife - A Continuous Conway's Life

mikejuk Re:Continuous? (2 comments)

Yes you are correct - the simulation is a digital approximation to a true continuous differential equation. If you like its the differential equation that corresponds to a class of 2D cellular automata.

more than 2 years ago
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Raspberry Pi For The Rest Of Us

mikejuk Re:Get over it! (2 comments)

When you aim is to learn to program - in Python say - having to configure any OS is not a desirable first step. It isn't Linux is difficult, it's just not the object of the exercise and if you can avoid it then so much the better.

more than 2 years ago
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The Chaos Within Sudoku - a Richter Scale of Difficulty

mikejuk Re:Tip for editors; (74 comments)

My fault - there is a missing greek (I always think that should be geek) letter before the comma and I didn't see that the gt lt signs had been removed.

more than 2 years ago
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The Fastest Database One the Planet

mikejuk Re:Spell check title (2 comments)

Yes I saw it the instant I had pressed the Save button. I'd read the body text but not the title. But there is no edit facility so I can't correct it. Doh! indeed :-0

more than 2 years ago
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Japanese Researchers Create A Crab-Based Computer

mikejuk Re:Not Logically Complete (102 comments)

Once you have a NOT gate you simply put it after an OR and you have a NOR.

more than 2 years ago
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Japanese Researchers Create A Crab-Based Computer

mikejuk Re:Not Logically Complete (102 comments)

The AND gate also produces NOT X AND Y and X AND NOT Y outputs. All you have to do is hold Y high and you have a NOT X gate.

more than 2 years ago
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Google Introduces Gmail Tap — A New Way Of Writing Emails

mikejuk April fool (2 comments)

another google joke.

more than 2 years ago
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Google moves into NASCAR with its autonomous driving

mikejuk April fool (3 comments)

an expensive robot car in stock racing?

more than 2 years ago
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Classic Nintendo Games Are NP Hard

mikejuk Donkey Kong (1 comments)

Sorry folks the Donkey Kong was spellchecked to Donkey Kind --- come to think of it there might be scope for a new game here... mikej

more than 2 years ago
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$100,000 Prize - Prove Quantum Computers Impossible

mikejuk Re:Why Bother? (2 comments)

Don't agree - the knowledge obtained on the way to a proof that they don't work is likely to be as enlightening about QM as working quantum computers.

more than 2 years ago
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Kinect for PC to Launch With No Licence Fee

mikejuk Re:not worth $249 when it doesn't do anything (3 comments)

I think its a good compromise. MS could have charged a license fee for commercial use and so got a load of bad press for being restrictive and over controlling. By not charging a license fee they get some good will and can claim that they are only stopping you using the Xbox version because it is subsidized Also by keeping the Xbox version available they let people experiment and play with it with the option of moving to the Windows version if a commercial product results. Finally by offering an educational discount they even let education work with it at about the same price as the Xbox version. I don't really see what MS could have done more to make the pill of paying for Kinect any more palatable.

about 3 years ago
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Open Source Software Reveals The Young Da Vinci

mikejuk Re:Was this translated from something? (2 comments)

Sorry it should have read Now, Amelia Carolina Sparavigna of the Dipartimento di Fisica Politecnico di Torin, with the help of some open source image manipulation software, HAS DONE the same job in a few minutes. I tried to move the HAS DONE and managed to leave the original where it was. Not translated just copy and pasted :-) Sorry. mikej

more than 2 years ago

Submissions

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Bjarne Stroustrup Awarded Dahl-Nygaard Prize

mikejuk mikejuk writes  |  2 days ago

mikejuk (1801200) writes "Bjarne Stroustrup, the creator of C++, is the 2015 recipient of the Senior Dahl-Nygaard Prize, considered the most prestigious prize in object-oriented computer science. Established in 2005 it honors the pioneering work on object-orientation of Ole-Johan Dahl and Kristen Nygaard who, designed Simula, the original object-oriented language and are remembered as "colorful characters".
To be eligible for the senior prize an individual must have made a
"significant long-term contribution to the field of Object-Orientation"
and this year it goes to Bjarne Stoustrup for the design, implementation and evolution of the C++ programming language. You can't argue with that."

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Atlas Rebuilt - DARPA's Almost New Robot

mikejuk mikejuk writes  |  5 days ago

mikejuk (1801200) writes "Atlas was the robot from sci-fi, big, black and powerful — only it had these cables that provided it with power and made it look a little like a dog on a leash. It was designed to provide a hardware platform for teams competing in the DARPA Robotic's Challenge DRC — a competition designed to encourage the construction of an effective disaster response robot. Now it has been revealed that the finals of the DRC later in the year require that the robot used not to have a tether and hence Atlas needed a redesign.
The new Atlas has no wires of any kind and hence is described as "wireless". This is achieved by fitting an onboard 3.7 kilowatt-hour lithium ion battery. This is used to drive a variable-pressure pump which operates all of the hydraulic systems. This makes ATLAS much quieter but introduces a complication for the teams. The pump can be run at low pressure to save battery and then switched into high pressure to get some work done. What this means is that not only do the teams have to worry about robotic things they also have to manage the power consumption as if ATLAS was a mobile phone.
There are lots of other new features and you can see the robot in action in a video.
There is also news of the DRC in that the prize has been increased to $3.5 million — $2 million to the winner, $1 million to second and $500,000 to third place. The robots also have to work without a cable and if they fall over they have to get up on their own or fail at the task. The idea of an Atlas falling over and picking itself up is difficult to imagine.
Finally while the new Atlas looks good the plastic covers make it look far less threatening."

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SparkleVision - Seeing Through The Glitter

mikejuk mikejuk writes  |  about a week ago

mikejuk (1801200) writes "Another new application of computational photography lets you reconstruct an image that has been reflected by a rough shiny object — a glitter-covered surface, say.If you have an image viewed by reflection from a "glittery" surface — more technically one containing mirror facets with random orientation — then what you will see is a blurry shadow of the original. To unscramble the image all you need is the inverse transform and a recent paper from MIT explains how to do it. Basically all you have to do is shine a one pixel light onto the glitter and record where it goes on the sensor. Then some math is used to compute the inverse transformation. Not content with theory the technique was used to make convincing reconstructions of photos reflected off a glitter surface.
The reconstruction is very sensitive to slight shifts in the image and this could be used as a movement detector or 3D camera. But next time you are in a room with a glittery surface keep in mind that you could still be watched."

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Computing Teachers Concerned That Pupils Know More Than Them

mikejuk mikejuk writes  |  about two weeks ago

mikejuk (1801200) writes "A survey of UK schools carried out by Microsoft and Computing at School reveals some worrying statistics that are probably more widely applicable.
The survey revealed that (68%) of primary and secondary teachers are concerned that their pupils have a better understanding of computing than they do. Moreover the pupils reinforced this finding with 47% claiming that their teachers need more training. Again to push the point home, 41% of pupils admitted to regularly helping their teachers with technology.
This isn't all due to the teachers being new at the task — 76% had taught computing before the new curriculum was introduced. It seems that switching from an approach that emphasised computer literacy to one that actually wants students to do more difficult things is the reason for the problem."

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Google Cast For Audio - A Solution?

mikejuk mikejuk writes  |  about two weeks ago

mikejuk (1801200) writes "You would think that sending an audio stream to some device so that you could hear it would be a solved problem. Far from it! Google has just announced Cast for Audio based on its Chromecast mechanism.
Chromecast isn't a dumb communications device. When you use it to play a video it takes the URL, connects and streams the video via its WiFi connection independently of the originating device. This means that if you cast a video from a phone the ChromeCast does the heavy lifting leaving the phone to save its battery.
The latest extension of the idea is Cast for Audio just announced by Google. Chromecast technology will be built into Cast ready speakers which should be available in the spring. It seems Google have companies like Sony LG and Denon in on the deal. So you at the very least have to go and buy a new set of speakers to make Cast work. Once set up on your WiFi network the fact that is supposed to appeal to the consumer is that playing something is just a matter of hitting the Cast button. This will transfer the URL of the stream and leave your mobile free to get on with something else — you can even turn it off.
Is this the end of Bluetooth audio?"

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JavaScript Is The Language Of 2014

mikejuk mikejuk writes  |  about three weeks ago

mikejuk (1801200) writes "The January 2015 TIOBE index is out and it names JavaScript as the language of 2014. At long last, JavaScript is Language Of The Year. And before you start to make a fuss — yes TIOBE is a very blunt instrument that doesn't measure anything much directly related to programming language use or popularity, but it has been going for a long time and it does indicate the relative importance and year-on-year changes.
JavaScript has been around for a while, but so far its performance, in the TIOBE index at least, has been mediocre. In many ways this has reflected badly on the index as it has been obvious to everyone that JavaScript, the language we all love to hate, has been on the rise since it was introduced and seems destined to take over the world.
In terms of ranking, C is still at number one, closely followed by Java. We then have a big jump to reach the rest of the languages with Objective-C, C++ and C# forming a cluster at 3,4 and 5. At position 6, PHP is still higher than JavaScript, which comes in at 7, having moved up from 9 over the year. Finishing the top half of the list we have Python, Perl and PL/SQL."

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Marry Or Move On - There's An Algorithm For That

mikejuk mikejuk writes  |  about three weeks ago

mikejuk (1801200) writes "The problem of deciding who to marry or settle down is not usually thought of as one to solve algorithmically. But in algorithmic terms this is just a decision process and one that has been studied before — it is called the Secretary Problem.
You are given a list of n candidates and you are allowed to interview each one but you have to either accept or reject each candidate before moving on to the next one. And you can't change your mind later.
The problem is essentially that of finding an optimal statistical stopping rule. You need to work out how good a candidate has to be to make it a good bet that you won't see a better one in the remainder of the list.
The standard solution to the problem is to reject the first n/e (e the exponential number) candidates and then accepting the first applicant that is better than the best interviewed so far. If there isn't one you accept the last applicant. If you follow this rule you will reject the best candidate about 37% of the time.
Now you might notice that this problem is very similar to the marry or dump problem posed at the start. You sequentially meet potential partners and at each stage you either reject and move on or attempt to hang on to what you have.
A recent paper titled “Should I break up with my girlfriend? Will I find another?” Or: An Algorithm for the Forecasting of Romantic Options by Rashied B. Amini [spam URL stripped]... describes some of the ideas behind a service he has constructed called Nanaya. [spam URL stripped]
This takes the analysis of the secretary problem a stage further by taking information about you, your significant other, your life status and groups of people you interact with. It then attempts to work out a probability that you will meet someone "better" than your current attachment.
The program output some standard information on the opportunities to find a match, but most importantly it outputs:
Whether remaining in a relationship or returning to being single will probably provide maximum utility.
That is marry or dump. So are you going to try it out?"

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17x17x17 Rubik Cube Solved In 7.5 Hours

mikejuk mikejuk writes  |  about three weeks ago

mikejuk (1801200) writes "The 3x3x3 cube is boring, even though there are still competitions to see how fast it can be solved. There are also competitions to see how fast 4x4 and 5x5 cubes can be solved, but 17x17x17!? There are more than 66 followed by 1053 zeros different possible positions in a 17x17x17 puzzle, so finding any state that you might consider ordered is a problem in a huge search space.
But first you have the problem of building a 17x17x17 cube — not a mechanically easy challenge in itself. You can buy such a cube from Oskar van Deventer at Oskar Puzzles. His "Over The Top" is also the holder of the Guinness record for the largest physical Rubik's cube.
So given a 17x17x17 puzzle what do you do?
Solve it of course.
This is what Kenneth Brandon, aka RedKB, did and he made a video of the entire seven and a half hours it took to solve. Fortunately he also made a timelapse version of the video so you can watch it in just over six minutes
At the end of the day, doesn't it leave you feeling glad that computers were invented to solve this sort of problem?"

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Mechanical Insects Evolve The Ability To Fly Though A Window

mikejuk mikejuk writes  |  about a month ago

mikejuk (1801200) writes "You might think that the world has enough insects without creating robots in the same style. In this case, however, the real interest is in the way the ability to fly though a window can evolve without anyone really trying.
This particular robot, DelFly — see http://hardware.slashdot.org/s..., is a miracle of miniaturisation. It weighs just 20 grams including a 1-gram autopilot and 4 grams devoted to a stereo vision system. It was designed at the Delft University of Technology in the Netherlands. The idea was to try to evolve behaviour that would get the autonomous system to fly though a window all on its own. This involves finding the window and working out a flight configuration that gets DelFly though the window.
DelFly learned using the genetic algorithm, An initial population was created at random and then tested in simulated environment. Each individual was rated on their success and a fitness value computed. The best individuals are used to create a new generation by crossover and mutation. After 150 or more generations the behaviour tree proved about 88% successful which should be compared to an 82% success rate for a hand-crafted tree.
So put simply the DelFly evolved to fly though the window — just like the real thing."

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Pi In Space!

mikejuk mikejuk writes  |  about a month and a half ago

mikejuk (1801200) writes "Raspberry Pi that is.
When British astronaut Tim Peake heads off to the International Space Station in November 2015 he will be accompanied on his 6 month mission by two augmented Rapsberry Pis, aka Astro Pis. The Astro Pi board is a Raspberry Pi HAT and provides — gyroscope, accelerometer and magnetometer and sensors for temperature, barometric pressure and humidity. It also has a real time clock, LED display and some push buttons — it sounds like the sort of addon that we could do with down here on earth as well! It will also be equipped with both camera module and an infra-red camera.
UK school pupils are being challenged to write Rapberry Pi apps or experiments to run in space. During his mission Tim Peake will deploy the Astro Pis, upload the winning code whilst in orbit, set them running, collect the data generated and then download it to be distributed to the winning teams.
If this doesn't get kids turned on to computing and science nothing will."

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StreetPong - Makes Waiting For Traffic Fun

mikejuk mikejuk writes  |  about a month and a half ago

mikejuk (1801200) writes "The extremely wacky idea, which has been put into real use in Germany, is an interactive game of Pong that you can play with the pedestrian waiting on the other side of the road. You control the ball using arrows on the push-button unit that activates the crossing. The devices are now known as ActiWait, and the thinking is that by giving you a way to avoid boredom while waiting for the lights, they’ll cut down on pedestrians attempting to cross the road without the protection of the lights. If you think its a great idea then there is an IndieGogo https://www.indiegogo.com/proj... campaign on,with 38 days to go. if you put up 10,000 euros then you get a pair of game units to attach to a traffic crossing of your choosing — of course it's down to you to get official permission to do so. As an upgrade I'd recommend Froggy Freeway – the sight of those frogs getting squashed would be a much better deterrent to jumping the lights."
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Spectrum Vega – A Blast From The Past

mikejuk mikejuk writes  |  about a month and a half ago

mikejuk (1801200) writes "A new games console is being launched based on the 80s classic, the Sinclair ZX Spectrum. Within days of the start of its Indiegogo campaign all of the 1000 Limited Edition Spectrum Vegas had been claimed but there is still the chance to get your hands on one of the second batch.
The Sinclair Spectrum Vega is really retro in the sense that it plugs into a TV, so avoiding the need for a monitor, and comes complete with around 1,000 games built-in. Games are accessed through a menu based system, and once selected load automatically taking the player directly into the game play mode. This is very different from the original Spectrum with its rubber-topped keyboard and BASIC interface.
If you have existing Spectrum games you’d like to play, you can use an SD card to load them onto the Vega, though the current publicity material doesn’t give much clue as to how you go from ancient cassette tape to SD card. As for programming new games, there are ZX Spectrum emulators for Windows that are free and ready to use – but this raises the question of why we need retro hardware at all."

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Finland Dumps Handwriting In Favor Of Typing

mikejuk mikejuk writes  |  about 2 months ago

mikejuk (1801200) writes "It seems incredible that in the 21st century schools are still teaching children to scratch marks on paper. Well in Finland they are taking a step in the direction of the future by giving up teaching handwriting.
The Savon Sanomat newspaper reports that from autumn 2016 cursive handwriting will no longer be a compulsory part of the school curriculum. Instead the schools will teach keyboard skills and "texting". The idea of teaching proper keyboard skills to children is unquestionably a great idea, the idea of texting is a little more dubious and many will mourn the loss of a traditional skill like cursive writing.
So what about a world where cursive writing is forgotten?
What do you do when your computer is dead and you need to leave a note? The death of cursive script probably isn't the death of handwriting but the death of doing it quickly and with style. Some no doubt will want to master it just for the sake of it — like driving a stick shift."

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What Does The NSA Think Of Cryptographers?

mikejuk mikejuk writes  |  about 2 months ago

mikejuk (1801200) writes "A recently declassified NSA house magazine, CryptoLog, reveals some interesting attitudes between the redactions. What is the NSA take on cryptography?
The article of interest is a report of a trip to the 1992 EuroCrypt conference by an NSA cryptographer whose name is redacted.We all get a little bored having to sit though presentations that are off topic, boring or even down right silly but we generally don't write our opinions down. In this case the criticisms are cutting and they reveal a lot about the attitude of the NSA cryptographers. You need to keep in mind as you read that this is intended for the NSA crypto community and as such the writer would have felt at home with what was being written.
Take for example:
Three of the last four sessions were of no value whatever, and indeed there was almost nothing at Eurocrypt to interest us (this is good news!). The scholarship was actually extremely good; it’s just that the directions which external cryptologic researchers have taken are remarkably far from our own lines of interest.
It seems that back in 1992 academic cryptographers were working on things that the NSA didn't consider of any importance. Could things be the same now?
The gulf between the two camps couldn't be better expressed than:
The conference again offered an interesting view into the thought processes of the world’s leading “cryptologists.” It is indeed remarkable how far the Agency has strayed from the True Path.
The ironic comment is clearly suggesting that the NSA is on the "true path" whatever that might be.
Clearly the gap between the NSA and the academic crypto community is probably as wide today with the different approaches to the problem being driven by what each wants to achieve. It is worth reading the rest of the article."

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A Worm's Mind In A Lego Body

mikejuk mikejuk writes  |  about 2 months ago

mikejuk (1801200) writes "The nematode worm Caenorhabditis elegans (C. elegans) is tiny and only has 302 neurons. These have been completely mapped and one of the founders of the OpenWorm project, Timothy Busbice, has taken the connectome and implemented an object oriented neuron program. The neurons communicate by sending UDP packets across the network. The software works with sensors and effectors provided by a simple LEGO robot. The sensors are sampled every 100ms. For example, the sonar sensor on the robot is wired as the worm's nose. If anything comes within 20cm of the "nose" then UDP packets are sent to the sensory neurons in the network. The motor neurons are wired up to the left and right motors of the robot.
It is claimed that the robot behaved in ways that are similar to observed C. elegans. Stimulation of the nose stopped forward motion. Touching the anterior and posterior touch sensors made the robot move forward and back accordingly. Stimulating the food sensor made the robot move forward.
The key point is that there was no programming or learning involved to create the behaviors. The connectome of the worm was mapped and implemented as a software system and the behaviors emerge.
Is the robot a C. elegans in a different body or is it something quite new?
Is it alive?
These are questions for philosophers, but it does suggest that the ghost in the machine is just the machine. The important question is does it scale?"

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Raspberry Pi A+ Details Leaked

mikejuk mikejuk writes  |  about 3 months ago

mikejuk (1801200) writes "After the Raspberry Pi B was upgraded to the B+ it was inevitable that the model A would follow. We were even promised something "special" by Eben Upton in a recent interview. Despite trying to keep it secret, Element 14, a major Raspberry Pi retailer has published some details by way of a web page getting ready to sell you a new model A+ (the page has now been removed).
The board layout looks very different and it is much smaller than the model A or B+. Judging from the photograph, the A+ board just encompasses the four standard mounting holes which makes it approximately 56x65mm — the model B+ is 56x85mm.
The key improvements are the new 40-pin GPIO socket, which makes the model A+ fully compatible with the HAT expansion standard. This means that any new HAT expansion cards should now work with the A+. It also specifically has a connector for the, as yet unannounced, Raspberry Pi touch screen. This was partially demoed in a recent interview and marked as "coming soon".
The other welcome change is the micro SD port, but the new A+ still has only a single USB 2 connector. There is also no word on what the device's power consumption is, but it has to be lower than the model B+ because it is basically the same design minus the Ethernet chip.
The model A+ is good news, except of course for all those Raspberry Pi case makers who will now have to redesign their model A cases.
No price as yet, but it would be a big surprise if it wasn't $25"

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Google Introduces Signed-In Maps - Gets All The Location Data

mikejuk mikejuk writes  |  about 3 months ago

mikejuk (1801200) writes "The announcement on the Google Geo Developers blog has the catchy title No map is an island. It points out that while there are now around 2 million active sites that have Google Maps embedded they store data independently, The new feature, called attributed save, aims to overcome this problem by creating an integrated experience between the apps you use that have map content and Google Maps and all it requires is that users sign in. So if you use a map in a specific app you will be able to see locations you entered in other apps.This all sounds great and it makes sense to allow users to take all of the locations that have previously been stored in app silos and put them all together into one big map data pool. The only down side is that the pool is owned by Google and some users might not like the idea of letting Google have access to so much personal geo information. It seems you can have convenience or you can have privacy.
It might just be that many users prefer their maps to be islands."

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The Astonishing Rise Of Dart

mikejuk mikejuk writes  |  about 3 months ago

mikejuk (1801200) writes "If the signs are to be believed Dart, Google's JavaScript replacement is shooting up the popularity stakes. Should Dart be the next language you learn?
This month's Dart TIOBE index shows an amazing increase in interest — yes its a hockey stick. After showing only small pulses of interest since its introduction in late 2011, Dart has suddenly entered the top 20 languages at number 17 after a rapid and sustained spike starting at the end of July 2014. To give you some idea of where this places the language, its TIOBE ranking is better than F# and close to Ruby. From nothing much to being as popular as Ruby means you probably need to take notice of Dart in the future.
Of course there are all of the usual caveats about the TIOBE index, but no matter what you think is being measured, something clearly started happened at the end of July and it is still happening. It is so unusual that the thought that someone might be gaming the TIOBE index does occur."

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Amazon Robot Picking Challenge 2015

mikejuk mikejuk writes  |  about 4 months ago

mikejuk (1801200) writes "We have all heard the stories about how Amazon treats workers in its fullfilment centers. Well now it seems it wants to do the right thing — and replace all of them by robots.
The Amazon Picking Challenge at ICRA (IEEE Robotics and Automation) 2015 is about getting a robot to perform the picking task. All the robot has to do is pick a list of items from the automated shelves that Amazon uses and place the items into another automated tray ready for delivery. The prizes are $20,000 for the winner, $5000 for second place and $1000 for third place. In addition each team can be awarded up to $6000 to get them and their robot to the conference so that they can participate in the challenge. Amazon is even offering to try to act as matchmaker between robot companies and teams not having the robot hardware they need. A Baxter Research Robot will be made available at the contest.
A robot picker sounds like it could be removing humans from a job that would be much better suited to robots — but then of course, the humans wouldn't have jobs.
We talk a lot in the abstract about the effect that robots have on employment and are very smug about the idea that robots grow the overall job market by creating new jobs in other areas, but here we have a crystal clear situation. The people doing the picking aren't going to be getting jobs that have been created by the robots. The robots will simply take their jobs."

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Mozilla Labs Closed And Nobody Noticed

mikejuk mikejuk writes  |  about 4 months ago

mikejuk (1801200) writes "When Google Labs closed there was an outcry. How could an organization just pull the rug from under so many projects?
At least Google announced what it was doing. Mozilla, it seems since there is no official record, just quietly tiptoes away — leaving the lights on since the Mozilla Labs Website is still accessible. It is accessible but when you start to explore the website you notice it is moribund with the last blog post being December 2013 with the penultimate one being September 2013.
The fact that it is gone is confirmed by recent blog posts and by the redeployment of the people who used to run it. The projects that survived have been moved to their own websites. It isn't clear what has happened to the Hatchery -the incubator that invited new ideas from all and sundry.
One of the big advantages of open source is the ease with which a project can be started. One of the big disadvantages of open source is the ease with which projects can be allowed to die — often without any clear cut time of death. It seems Mozilla applies this to groups and initiatives as much as projects. This isn't good."

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