Re: Puzzled
Even code changes may be ineffective if the security layer is based on an encryption algorithm whose keys have been lost/stolen (as claimed by Craig Wright).
508 publicly visible posts • joined 1 Jul 2020
My understanding of Bitcoin and its forks (and I could be wrong) if that the blockchain security explicitly makes it impossible for someone else, even a Bitcoin admin, to access any wallet that they don't have the access keys for. If so this makes Craig Wright's whole court case a complete waste of time, since even a court order is not going to open the doors.
The discoveries made by Curiosity about the geological history are fascinating and ground breaking (almost literally). Lets hope it has plenty of time before the inevitable shutdown to further learn about our near-neighbour.
Will be raising one (and maybe more than one) this weekend in celebration -------->
I knew one accountant who was definitely as smart as hell and also had loads of common sense. My late father.
The best piece of advice he ever gave me was to NEVER become and accountant. I was very careful to follow that advise to the letter.
Sad face, because after over 22 years I still mix my old man.
I remember once (about 25 years ago or so) having to go over to Japan to witness some factory acceptance tests (ultimately successful, but not without a major screw-up on the way), before ending up in Tokyo to witness a site acceptance test for a new satellite NOC. These latter tests where not successful in any respect; in fact I think that I failed them on just about every item we looked at. Basically they where woefully unprepared, and I suspect where expecting me to just sign on the dotted line rather than actually check things.
One of things I realised from this trip, however, is to be careful not to make the situation worse when dealing with the Japanese. The loss of face was already considerable, there is no need to push them deeper into the quagmire of shame. Because of the way I handled things, they specifically asked me to come out a couple of months later to rerun the tests, with results that meant that not signing on the dotted line was out of the question.
Looks like the whole sandbox privacy thing is based around a series of JavaScript APIs that can be called by embedded scripts inserted by the Ad slingers. Noscript should be a pretty simple way of disabling that, backed up by Adblock just in case something slips through.
... will solar panels cut it?
Only if you have a large enough area; the actual power generated by solar panels is not great (even with modern technology they are not very efficient in converting light into useful energy), and I suspect the power requirements for any commercially viable refinery device is probably going to be pretty high.
Maybe a nuclear reactor (not RTGs) might do the job, but launching one of those is going to raise all sorts of hackles.
My wife used to be a teacher, and at one time was giving adult education classes in Borden (small town south of Aldershot that, at the time, also hosted a significant army camp). One day she was interrupted by someone who suggested that she might like to go outside because "there is a problem with your car". The problem turned out to be Army Bomb Disposal - my wife had parked about 100 yards from the main gate of one of the barracks, and (while this was perfectly legal since there were no parking restrictions) the gate guard had got nervous and called it in as a threat. The Army Bomb Disposal guys had rolled up and were about to perform a controlled detonation on the car to display any devices; fortunately they stopped when my wife identified herself as the car's driver.
Oh yes, the car she nearly got blown up was actually mine!
Mars is not a nice place for solar-powered missions. Apart from the distinct possibility that the solar panels have been covered with too much dust, another possibility is that the intense cold during the Martian winter (temperatures could easily drop to -100C in even lower) has damaged something that the rover needs to help it wake up.
On the over hand, congratulations to the Chinese for getting a rover on the surface of Mars in one piece; that's a tricky thing to do at the best of times.
When I was in university way back in the 80's, the CompSci department and the associated computer/server room was relocated from the edge of campus to two swanky, recently refurbished floors of the university's main building. This building was (apparently) the largest completely brick-built building in Europe, and included several large shafts that ran from the ground to the top floor that was originally used for heating (that heating system was long gone by my time). The CompSci department had decided to install a relatively new technology called "Ethernet" throughout the university's main building, and they used one of the air shafts as a conduit for the main backbone cable. Not being complete idiots, they used a cable that ran through an armoured steel shell just in case of unforeseen circumstances.
Meanwhile the next couple of floors above the new CompSci department had started to be refurbished (this was an on-going task at the time that lasted several years). The builders had discovered the air shafts and had decided to use them as an easy way to get the demolition rubble down from where they were working to ground floor, at which point they would cart it into the skips. Unfortunately everyone quickly discovered that the armoured Ethernet cable, while cable of surviving anything an drunk undergraduate (or postgraduate for that matter) could swing at it, was not cable of handling 50 tons of building rubble dropped from a great height.
I'll leave it to yo to image the conversation between the head of CompSci, the Vice Chancellor and the building contractor management.
No, this is not even remotely common. If my GP wants to speak to me about a diagnosis then they will telephone me, leaving a message to get back to them if I am not available. They *never* use SMS for anything more than appointment reminders and nudges about flu jabs.
Actually, for something like a cancer diagnosis, my GP would not even use the telephone; they would handle it using a face-to-face consultation.
It had, but you are taking a heat shield that is probably still cooking at several hundred degrees centigrade and dunking it into (relatively) cold water. A lot of things can happen at that point, many of which fall into the "nasty" category. NASA wants to ensure that it understands how the heat shield handles this, and that nothing occurs that could possibly pose a risk to future astronauts.
They are launching in-orbit spares, so if they do loose a complete satellite (something that happens, but not often) then they can rejig the constellation to cover the gap.
You don't necessarily need a bigger dish on the ground terminal - depends on how they have closed the link budget. Most likely they put a bigger dish on the satellite with a huge gain; entirely feasible given modern antenna structure technology (look at the size of the antennas that the likes of Intelsat and Inmarsat are using on their current-generation GEO satellites).
I personally worked on an experimental terminal that used an antenna that was only about 60 mm high and weighed in at about 30 g. We used this to transmit terminal-to-terminal over GEO, passing IP packets back and forth, albeit at low data rates.
A friend of mine sent me a copy of some source code I had written in the 1990's that was used to schedule observations for a science satellite mission. Well commented - yes. Understandable - yes. Well structured - not even close. Maintainable - let's talk about that some other time.
Amazingly the software worked and actually exceeded its functional requirements by a significant measure; in doing so it contributed to the satellite also exceeding its science objectives. BUT, I am definitely cringing at looking at what I wrote all those years ago.
The real problem for hydrogen that still needs to be solved is a reliable and safe way of storing it either under very high pressure or in a liquid form. Because the molecular size of hydrogen is so small, it can escape from a hole that is literally too small to detect with current scanning technology. Adding to that is the fact that escaped hydrogen, when combined with atmospheric oxygen, is an explosion just waiting for a very, very small spark to happen.
NASA and other space agencies have been trying to solve the hydrogen storage problem for decades, and they are still no nearer to a solution.