Green Card? I like SF (see previous article), but I'm not moving there (too old anyway). Other Brits (or other non-USians) might want to though.
211 posts • joined 28 Apr 2008
Green Card? I like SF (see previous article), but I'm not moving there (too old anyway). Other Brits (or other non-USians) might want to though.
I've been on business trips to Silicon Valley on numerous occasions and I always made time to visit SF. We also started a longish US holiday there a couple of years ago. Agree about Sausalito. There was a farmers' market there when we went with the most delicious strawberrys on offer! Alcatraz may be a tourist thing but it really is worth a visit to see how the cons lived. I don't think the US penal system has moved on much either from those days so his warnings about illegal behaviour are to be noted. Go up onto Marin Heights - an excellent view over the Bridge back to the city. SF is also a good base for visits to Santa Cruz (seal watching off the pier), Monterey and, if you're down there, just go look at Carmel.
One trip I motored up to the Lick Observatory from San Jose, which is worth a visit if you're into astronomy.
The good bits became Agilent, which still has a good rep in test & lab eqipment, I think.
10^10 - I can't be bothered trying superscripts as the original article got the html wrong too. An Ångström unit is 0.1 nanometres.
ITV Player quality has been truly dire on the few times we've had to use it. However even the 'high quality' stream of BBC iPlayer is nothing like as good as even SD broadcast. Ofcom are playing their usual game of giving low priority to service user requirements over service provider requirements.
IP delivery of broadcast services will only work with at least tens-of-megabits broadband delivery to the population coverage requirements the broadcasters must meet. Commercial realities mean that is never going to happen by copper, fibre or RF. Also, satellite is a single point of failure. With a big enough solar flare, all the sats, including the spares, will fail, and the replacement cycle will be long, with sat broadcasting probably not near the top of the build & launch priority list.
Streaming of 4k content is going to be a real challenge for content providers until multicast is in mainstream use, and consumer network kit will recognise its routing protocols. Even with that, real-time may be a struggle. Given the prevalence of recording devices, increasingly with terabit hard disks (or SSDs soon?), I would think that offline download would become more attractive as a distribution method.
4k is totally pointless for a 20" screen. The width is 17.43" (44.28cm) so each of the 3840 pixels along a row is only 0.12mm wide. You would need to be pretty much touching the screen with your nose to resolve detail at the pixel level.
Aw, give the guy a break! At least he's not spending tax dollars on this enterprise.
I hope they include a suicide function to de-orbit the sats at end of life.
@Arnaut: If we started fundraising on Kickstarter for a B-Ark, given its target complement, then I'm sure we would raise the funds in no time flat. No need for State funding!
What with Leibniz's dy/dx, Newton's dot notation, and Heaviside's D operators, that was all a bit of a brain caner on encountering them all at uni back in the day. We used Leibniz at school for O level calculus.
950 to be precise. Sky customers may be able to get it too?
Terrorism *isn't* an existential threat. The Soviet Union might have been during the cold war but not a bunch of fulminating islamists. They are just a pinprick and we (including politicians) ought to man up and deal with them as such. There will be casualties, but that's one of the prices you have to pay sometimes for living in the sort of free society we do live in. And it is pretty much free, despite government trying to nibble away at the edges.
I've just been reading a book about Operation Sealion (Seelöwe), the putative German invasion of England in WWII. The restrictions on individual liberty then were pretty much on the scale of a military dictatorship, and people put up with it because of the perceived threat.
The lesson is that restrictions should be consonant with the threat to be acceptable, and IMHO the threat is real, but overblown.
By the time it's needed the vertical velocity is so low that the drogue would have no effect.
Also, landing on land - where? As someone else pointed out on another thread, the stage has
considerable velocity eastwards due to the rocket thrust. The next land is in Europe or Africa somewhere depending on the launch angle for the desired orbital inclination, and at least a couple of thousand miles away. It's probably a lot more economical on fuel to come down forward & bleeding off the forward speed on the way down rather than trying to send it back to Cape Canaveral. A sea platform recovery is probably going to be used, and be a (weather, sea state) constraint for some time to come.
99.999% - That's a generally accepted uptime target. Some industries need/want six nines, i.e. 31 secs per year, and when I was back working on design of UK infrastructure I reckoned we needed more like 7 nines with any failures being in the 1 in many years category. That costs, of course...
Trouble is, the Greens have loony policies in so many other ways so even if they are sound on civil liberties all the other stuff is too horrible to contemplate. We really are bereft of choice:(
IMHO the problem with the Surveillance State is not so much that it goes on - it has to happen at some level. It's that there is no-one we, the public, can trust to do a proper oversight job. Here, oversight means understanding and being able to discuss effectively a lot of sensitive detail that the security services are unwilling to disclose to outsiders, and it goes without saying that the security services would have to trust the overseers as well as us trusting them for the overseers to be able to do a half-decent job.
I went into my bank (Barclays) before Christmas to discover those nice people behind the counter had morphed into a row of terminals along the wall. This is the main branch in a decent-sized town. It is possible to talk to a real human to effect some transactions, but no longer to get hold of real folding stuff, it seems. I think my local country town branch still has real human tellers but for how long?
Already here. It's called a taxi...
Better to risk-pool the insurance over 60M rather than 2.5M people. The drawback there is that us healthy southerners are subsidising Glaswegians with 3rd world mortality rates, before they do croak (sorry about the Scotist stereotyping). Perhaps we just live with that for the greater good.
I was disappointed by it, though perhaps my preconceptions were wrong. Having read a fair bit about BP and the various endeavours there the portrayal of much of that in the film was risible. I would even go so far as to say that Alastair Denniston, had he been alive today, would have a good case for a libel action. But then any good drama has to have a baddy - better be one that can't sue!
They will be in a couple of years when the manufacturers stop offering software updates. I have a 3-year old Panasonic. It will do iPlayer, YouTube and some other stuff I'm unlikely to use. However Panasonic won't update it any more so no ITVplayer, 4OD and the rest. Netflix? forget it. I'm not going to lash out several hundred notes & 'recycle' my current device for that but I can imagine some people do.
It's probably not too hard to do with enough forward planning, and some decent tech support. I wonder how much Clooney paid for what seems to have been a decent security wrap.
This is essentially how I do online banking with Barclays. The card & card reader together generate a 8-digit token to use at login. It can also validate payment transactions made from the account. However not all the digits are 'random' - at least the first two are a counter on the card. That wouldn't be good enough for this application though - the token needs to be much longer, and it would need some kind of way of tying that particular token to the transaction.
There are quite a few scripts in /bin, /sbin, /usr/bin & /usr/sbin that are bash scripts on Ubuntu though. I looked at one or two and it didn't look like they used specific bashisms. The biggest offenders were scripts associated with gzip.
Lightning 3.3 still worked with Thunderbird 31.1.2 but I've now updated to Lightning 3.3.1. The real thing that killed my calendar was when I updated my server to Ubuntu 14.04. The extra stuff I had in apache's sites-available directory, including davical, stopped working because the scripts now all needed the suffix '.conf'. I wonder if it was just someone with a mania for tidying up, or whether it was necessary to make new functionality work.
Coax? And I've seen jacks of various diameters with several rings. The impedance properties of multi-contact jacks are probably not too good for high speed data though.
I've decided to ditch my 'Practical Unix Terrorism' T-shirt (one of the "O'Really" book parodies). I really don't want the hassle it would cause me these days
From his moniker I'd guess he hails from that benighted territory the other side of the Pennines. And I can more or less understand them just as well as my own compatriots. Must be something lacking in the water that side... By the way, if you want incomprehensible, try this part of the UK (a ways east of MK)
Delta-V is a bitch too.
Up at the launch altitude, I would think any control surface deflection would have little to no impact until the craft reaches quite a high velocity. In fact, I wonder if you'll have any real control authority until it descends a fair way.
USian lawyers obviously don't take that to heart. Even a cursory analysis by a competent engineer would have told them to lay it down carefully & walk away quickly. But then when have the hot-to-invest types listened to anyone?
For us formerly teenage pyromaniacs, this is a classic text on how it *should* be done...
Not really true. The annuity can fail to be paid if the provider goes bust, as can a pension - many company pension schemes are under-funded because they took pension contribution holidays inadvisedly in the past. Similarly government could elect not to continue to pay benefits/pension etc. The issue here in judging the value of a future stream of income is the risk that it will stop or vary at some future point. You could argue that an annuity has less risk of stopping than a state benefit, but I could equally argue the opposite, based on market conditions, political commitments and a whole raft of other factors. That makes valuing the benefit income stream as an asset somewhat more problematical, but it doesn't completely destroy its value.
"Ah, but what number base was '42' in ?"
13 AFAIR. Find the question.
And just complexify the reactions a bit & you can go up the list of aliphatics & aromatics. Next stop gasoline, then kero, then diesel/gasoil. It's all rather energy-intensive but we've got all sorts of non-fossil energy technologies working their way up the inventiveness & optimisation slopes.
He never got the full prize due to the same kind of political scheming that goes on to this day:(
The big problem with air travel is matching the energy density of kerosene and the power to weight ratio of modern jet engines. I suspect the future solution will be to manufacture synthetic kero from atmospheric CO2 and water, and forget about the energy inefficiencies of such a process.
Alternatively, we return to the age of the Titanic...
No, it just has to be 2 or 3 times better than the average competent driver. And the more self-driving cars there are, which will presumably behave more predictably than the average punter, the easier self-driving cars will find it to drive amongst them. Us hangout meatbag controllers will also find the predictability something of a bonus.
Now Sergei, come and test it in the West End during rush-morning or rush-evening.
You've got a problem that's going to hit you where it hurts sometime down the road then. I'm assuming that people in your organisation use the WWW, so you need internal hosts to connect to external hosts using NAT, yes? Now, consider the case where some new company springs up (e.g. like Facebook) providing a service that becomes absolutely essential to your staff. But, they can't get any v4 addresses and have to go v6 only. Now, you could put in some kind of reverse NAT64 proxy that mapped internal rfc1918 address(es) to its v6 server addresses and faked up DNS to make it work internally. That would work, but you've now given yourself an almighty admin problem of keeping this stuff up to date, especially when more v6 only sites come online.
How close are you to retirement? Do you want to gamble?
"but there's a lot of IPv4 network between me and other IPv6 islands"
If you use a tunnel broker, perhaps. Most of the Internet backbone carries IPv6. The BGP routing protocol anounces v6 prefixes. I have no problem getting to v6 hosts all around the world, and only a small fraction, if any, goes over v4 tunnels.
"Which is also one of the main flaws in IPv6 reasoning; the illusion that these addresses wouldn't matter (too much) because of DNS and ARP / DHCP. But if you're fixing network related problems then the last thing you want to do is rely on "automagically" assigned addresses and the likes."
IPv6 went to a lot of trouble to make this work well, and the link-local stuff in ICMPv6 for neighbour and router discovery 'just works'. In my internal network inter-machine connections such as ssh use a range out of my allocated prefix plus the automagic bottom 64, and the link-local stuff just carries ICMPv6. The default route automagically appears as the link-local address of my firewall/gateway. It'll be a bit more complex for bigger networks but all the router manufacturers have screeds of info on how to configure it, either statically or via v6-aware routing protocols. And it's all readily Googleable!
There won't be one. There is enough v6 expertise around that the v4 crunch will (eventually) be solved by moving to v6, despite the grumblings, and probably with some extreme tantrums along the way, judging by the comments on here.
I've had v6 for years courtesy of Entanet, though I had to build my own firewall/gateway router.
Sadly many manufacturers are still in ostrich mode though. I recently bought a TP-Link TL-WA901ND access point to replace a venerable WAP54G. It worked fine for both v4 and v6 in a basic config, but when I wanted to set up a guest SSID the problems started. SSIDs on a VLAN didn't support v6 at all and the v6 router announcements on the default (untagged) VLAN1 leaked into the guest SSID(!). In correspondence with TP-Link they said this device would never support v6. Luckily there is a OpenWRT build for this device, so reflashing and configuring and I now have fully working v4 and v6 on both main SSID and guest SSID. Thanks OpenWRT and a raspberry to TP-Link!
It would need a retro rocket motor to cancel enough of the ISS delta-V - essentially changing the orbit so that it intersects the atmosphere at some point. It would be an interesting targeting problem to hit the atmosphere high enough to give it a gentle enough deceleration. However I suspect that friction would still do for it as it got lower.
Will the canards give you enough roll control, being close in to the fuselage? Are you expecting to have any aerodynamic control at launch altitude?
AFAIK a fatwa is just an instruction. The famous one regarding Salman Rusdie was an instruction for the faithful to kill him, but this one is apparently just an instruction not to go to Mars.
"in their defence the GPS manufacturers were apparently a little lazy, and didn't keep within their band - hence the interference"
That's a fundamental misunderstanding of the situation. GPS is a weak signal that transmits *within* it's alloted band. The receivers have to be sensitive, so can't use very selective front-end filters. That's OK because the bands either side were *supposed* to be space to earth bands for other services, therefore they wouldn't interfere with GPS receivers. Now, along comes Lightsquared trying to bounce the FCC into allowing them to run earth-based transmitters in the adjacent band with *much* higher local signal levels. The GPS manufactuers worked within the parameters they were given, and it has become a supremely successful service on that basis. I don't see how you can fault them. It's all on Lightsquared's crazy business plan, which should have been strangled at birth.
I think I'll opt for sex with the barmaid instead. It'll definitely be a case of coitus interruptus a bit later though!
I doubt even he could rescue the timescales, as they will be driven by physical limits, such as duct space, fibre supplies, staff who know what they are doing, etc, etc. Therefore when he fails he will be ceremonially slaughtered at some future time, given a quiet slide into some sinecure and a decent pension wedge. Meanwhile he has a nice salary to ease the pain of attempting to do an impossible job with a government minister sniping at him.
The service offering appears to be similar to that from XM Radio in the US, but that is delivered by satellite. I guess no-one was able to put together a viable business plan for a Euro-wide XM lookalike. Even the US one has had its problems. Nevetheless I've used XM in hire cars & with friends on one or two US trips, and it works well, even in the middle of Yellowstone Park where mobile coverage is all but nonexistent. Perhaps the dense mobile coverage in Europe makes it more viable, but it really needs a good multicast infrastructure over 3G/4G to make the economics work.
Sounds like he's decided to pull out his last few remaining teeth:(
I watched the launch on the net, plus some of the canned guff they showed beforehand. I must confess I far prefer the rather more minimalist NASA TV style, with a "just the facts, Ma'am" approach. The ESA commentators felt they had to fill the silence all the time, and the beforehand guff looked rather like the work of a wannabe Jean-Luc Godard. A bit like 'Noddy launches a Satellite' instead of an Open University production.
CCTV was much more impressive covering the Chinese moon landing too.
"No, down here they're rolling out to random villages and ignoring the towns with businesses crying out for it"
?? Isn't this supposed to be support for *rural* broadband? Having said that, around here BT seem to be upgrading the cabinets in our small towns that they weren't prepared to pay to do themselves, rather than concentrating on the villages which is what I naïvely supposed was the point of the exercise.