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Bitcoin Security Endangered By Powerful Mining Pool

fezzzz Re: Isn't the block chain what makes it decentrali (281 comments)

And then the value of all bitcoins will quickly approach 0 and the entity that spent so much money to acquire all the bitcoins will be broke.

about 6 months ago
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South African Schools To Go Textbook Free

fezzzz Re:This always ends well.... (76 comments)

About 50% true. A lot of corruption in the procurement of text books happened in 2013. The delivery of text books in 2014 was actually much more efficient.

The electricity is in short supply due to an increase in demand, but many power stations are being brought online with the largest dry-cooled power station in the world (Medupi) expected to come on-line in 2014.

The private sector did a stellar job bringing wind and solar energy to the grid with 37 turbines near Hopefield, 30 in Caledon, a large farm (probably about 50) near Jeffrey's Bay and about 20 turbines near Cook House (I'm just quoting these numbers from driving past them). I do however feel that providing tablets to the poorest communities is a bad idea as it will be very expensive to replace damaged/stolen tablets.

about 6 months ago
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Want To Fight Allergies? Get a Dirty Dog

fezzzz Old news - Hook Worms and Allergies (147 comments)

A lot of research has been done where hookworms are used to treat allergies. The main concept being that a modern immune system is bored without an enemy to attack and then attacks innocent cells.

Say the body is America and the immune system is America's defence force. The immune system is needed when dangerous pathogens appear, in the same way that American troops are needed to defend against enemies. If America is in no war and all its troops are recalled without downsizing the military, these troops will get bored and start identifying innocent people as enemies. It might shoot down a trainee pilot from Canada when entering American air space. This plane falls on a city and damages property or may start a fire in America. In the same way, the immune system may become bored when there are very few pathogen and starts attacking molecules that are not dangerous. Just as the defence force can be trained to identify russian fighter aircraft on a radar, so the immune system can be trained to identify pathogens correctly by means of vaccinations. In the extreme case, the defence force might attack the poor Canadian with an atomic bomb so big it destroys the whole continent. In the same way an allergic reaction can kill the person.

Now in Helminthic Therapy http://en.wikipedia.org/wiki/Helminthic_therapy, the hookworms are used as a perpetual enemy in the same way that America might used Afghanistan/Vietnam/Iraq. This causes a constant drain of blood, but when controlled, it may improve the health of the body overall.

Dogs are carriers of hookworms and the benefits of hookworms and allergies has been known for a long time, so in my opinion, this article is old news.

1 year,12 hours
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ArkOS: Building the Anti-Cloud (on a Raspberry Pi)

fezzzz Re:Good idea- difficult to implement (166 comments)

I recently bought a raspberry Pi with the idea of hosting a web server from home using a Huawei Dongle and the cell phone network. Due to the power wastage, I didn't think it a good idea to use my regular PC for the job.

First you obviously need to get the Huawei Dongle working with wvdial or something similar. This took me perhaps a week.

Then you need to contact your cell phone service provider and ask for an unrestricted APN otherwise they block all connections to your dongle. This took some paperwork, but I managed to get it done.

Once incoming connections are allowed, you can start hosting your website. The first proper request to my website activated the dongle's maximum power usage and this resulted in a power brown-out and the PI crashed. After upping the power supply from 700 mA to 1000 mA, this problem was solved.

NOIP and dyndns solved my dns problems easily.

The last problem I haven't solved yet is routing to my Pi with the cell phone networks. About 10% of the time, it finds a route, but the rest of the time it only finds the IP address. I will buy another sim card and see if it improves my situation, but in the mean time I've resorted to Amazon's cloud offering.

about a year ago
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Google Plans Wireless Networks In Emerging Markets

fezzzz Regulation dragging its feet to open up spectrum (43 comments)

The problem is that our government is too slow in switching to Digital TV in the lower section of the TV frequency band and opening up bandwidth for the cellular companies, which are well equipped to dish out bandwidth if they get the spectrum they require.

Google is not the right company to take hold of the spectrum, but I have to admit that they do take initiative. They just don't have the infrastructure that our cellular companies have. The cellular companies already have fiber in the ground, their towers are already transmitting. The only prohibition of the bandwidth to the public is spectrum available, which will hopefully become available soon as our national broadcasters are able to switch to Digital TV, but until that happens, I guess Google will have a chance at good publicity for the next few years.

Just google "icasa site:mybroadband.co.za" to get an idea of where our system can be improved.

about a year and a half ago
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YouTube To Offer Subscription Service This Week

fezzzz Hope this comes to the rest of the world as well (189 comments)

To use Netflix, we need to pay $5 a month for a proxy redirection service, so I hope Youtube keeps the rest of the world in mind in their target market.

about a year and a half ago
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Ask Slashdot: What Should Happen To Your Data After You Die?

fezzzz Re:Apropos (122 comments)

Mod parent up!

about a year and a half ago
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The Science Behind Building a Space Gun

fezzzz 10x slower than the escape velocity needed (131 comments)

The problem we face is that the guns on earth with the highest muzzle velocity is still about 7x below the escape velocity needed to have a projectile stay in orbit.

The Paris gun, created by the Germans in WWII was able to reach a target 130 km away, but the muzzle velocity was only 1600 m/s and already they had to sort their bullets in increasing diameter as the inside of the barrel was worn out with each shot. The fastest gun muzzle velocity I know of is the kinetic penetrating sabot rounds shot from tanks, which reach a velocity of 1700 m/s. Escape velocity is 11200m/s, which is well above this speed.

Catching a projectile from orbit is also not an option as this will slow the satellite with the amount of momentum needed to bring the projectile up to speed, not even speaking about the problems created with something as sensitive as a satellite need to catch a projectile travelling at 7x the speed of current bullets in kinetic tank destroyers.

about 2 years ago
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This Is What Happens When You Deep Fry a Frozen Turkey

fezzzz I don't get it (164 comments)

I looked at the video and I'm sure that turkey would taste just fine!

about 2 years ago
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Grumman Building Football Field-Sized Robotic Surveillance Blimp

fezzzz No solar panels on top (150 comments)

I would have thought they'd at least add solar panels and electric engines to extend the time their unblinking eye stays on target indefinitely.

more than 2 years ago
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Australia and South Africa To Share the Square Kilometer Array

fezzzz Re:Political correctness ties with science (79 comments)

The two sites are not as good as it gets. The South African site is better by a large margin. It was the best in the scientific review and the best in the site review. Once you have the minimum radio silence required, you still need the infrastructure (roads and power to the stations - present in South Africa, but still needs to be built in Australia). Australian minimum wage is around 20x South African minimum wage and I would like to see Australia make 1 dish at the same price South Africa can make 10 dishes. The only reason Australia was included is because they started crying so badly when they lost, the panel felt too sorry for them to give them the back hand their proposal deserved.

more than 2 years ago
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SKA Telescope Site Debate Not Over Yet

fezzzz Difference in price of labour is a huge factor (78 comments)

It seems as if many people simply disregard the cost of labour is Australia vs the cost of labour in Africa.

In South Africa, the labour law states that the minimum salary per month is around R1000.
In Australia, their labour law states that the minimum salary per week is 570 Australian dollars, which translates to around R19 000 per month.

Perhaps many Australians are 20x more efficient than South Africans, but there is simply no way that it will be cost effective to build a massive radio telescope in Australia

more than 2 years ago
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Stolen iPad's Reported Location Not Enough To Warrant Search, Say Dutch Police

fezzzz Re:Plan B. (619 comments)

I have always been under the impression you build these big things and have these big mouths to compensate for your minuscule penises.

more than 2 years ago
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Cheap Solar Panels Made With An Ion Cannon

fezzzz Re:Hegemony, schmegemony (395 comments)

I wonder how this will hold up in a small earthquake. Can't think that it will last.

more than 2 years ago
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South Africa Wins Science Panel's Backing To Host SKA Telescope

fezzzz Re:What Sa has over Au ? (117 comments)

Racism. As a South African with many friends travelling abroad I need to point out that we are at least less racist than America (incarceration inequality in America) and Australia (when did Abo-hunting end again). We are working very hard to rid the whole country totally of racism. The only difference is that in Africa, the whites never attempted to exterminate the blacks and therefore the blacks are in majority.

In terms of radio silence, the sites need to be radio silent and remote, but not so radio silent and remote that you need to build a new road to access it. I really hope we pull this through. I submitted a slashdot article a while back about the cooperation of many african countries and the fact that we were the pioneers to use composite materials for the dish reflectors, but it never hit the front page.

more than 2 years ago
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Astronomers Confirm a Hot and Steamy Exoplanet

fezzzz What about the poles? (66 comments)

I wonder what the water temperature at this planet's poles are

more than 2 years ago

Submissions

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Thousands of whistle blowers vulnerable after Anonymous hacks SAPS

fezzzz fezzzz writes  |  about a year and a half ago

fezzzz (1774514) writes "Anonymous performed a data dump of hundreds of whistle blowers' private details in an attempt to show their unhappiness with the SAPS (South African Police Service) for the Marikana shooting. In so doing, the identities of nearly 16,000 South Africans, who lodged a complaint with police on their website, provided tip-offs or reported crimes, are now publicly available."
Link to Original Source
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Yale finds link between cell phone use during pregnancy and behavioral disorders

fezzzz fezzzz writes  |  about 2 years ago

fezzzz (1774514) writes "Dr. Hugh S. Taylor performed a study on pregnant mice by placing a cell phone, with an active phone call on top of a cage and another cell phone, deactivated on top of the cage of the control group. He found that the mice exposed to cellphone radiation had reduced memory capacity and tended to be more hyperactive than the mice in the control group. This is not the first study to link cellphone radiation to a variety of problems, but the first I know of which were performed by Yale. Does anyone know if this study is remotely relevant to modern humans or not?"
Link to Original Source
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Google Street View To Reveal Great Barrier Reef

fezzzz fezzzz writes  |  more than 2 years ago

fezzzz (1774514) writes "Google Street View is pretty great! It lets me see rural villages, the National Gallery in London, post-crisis Fukushima, and your house. And soon, in collaboration with the Catlin Seaview Survey, it’ll be letting people explore Great Barrier Reef as part of the expanding ‘Seaview’ project.

The Catlin Seaview Survey is studying the composition of coral reefs on the Great Barrier Reef and Coral Sea – but they’ll be simultaneously broadcasting their findings through Google Maps. Once the expedition – launching in September – finishes up, they’ll have uploaded about 50 000 coral reef panoramas to Google Earth and Google Maps.

They’ll be using specially-designed squid-like robot cameras to dive into the deep-water reefs, travelling at aroun 4km/h, and taking 360-degree, geo-tagged panoramas every four to six seconds.

Some demo panoramas from Heron Island have been put up, to show off just how cool the technology is — take a look over here "

Link to Original Source
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South Africa's SKA bid reaches milestone

fezzzz fezzzz writes  |  more than 3 years ago

fezzzz (1774514) writes "Technology in South Africa is being developed at a rapid pace as their bid for SKA is gaining ground. With the completion of the first 7 antennas on the KAT-7 project, the first use of composite materials for dish reflectors. With Namibia, Botswana, Mozambique, Zambia, Mauritius, Madagascar, Kenya and Ghana partnering with South Africa in the bid, Africa seems to have overcome all the major obstacles associated with the project. Nokia is willing to supply the 15 petabyte per second infrastructure and EMSS Antennas have already built the first seven cryogenic low noise amplifiers. 64 dishes for the MeerKAT project has just been approved and after completion it will be one of the largest, most sensitive radio telescopes in the world."
Link to Original Source
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SA SKA bid signs MOU with Intel

fezzzz fezzzz writes  |  more than 3 years ago

fezzzz writes "South Africa's bid to host the Square Kilometre Array (SKA) has received a boost with the signing of a memorandum of understanding (MOU) between the bid team and Intel. The MOU was signed on Tuesday and gives the South African bid access to the latest hardware from the global computer chip producer."
Link to Original Source

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