As an AC noted, as it may not be noticed, I'm repeating, these are sealed 12v lead-acid batteries. This is the type of standby battery used for fire/burglar alarms and emergency exit lights. Zero maintenance and very safe.
All switched mode PSUs go from AC to DC to AC (high frequency) and then back to DC at the various rail voltages. The DC to high frequency AC to DC bit is very efficient because of the frequency (small inductors). The problem with a UPS is that it is stuck working at 50/60Hz which means large and lossy inductors. This much more efficient.
They wired a 12v battery to a PSU. You can see it in the pic. It's nothing special, and it still relies on the power supply to work.
A switch mode PSU takes AC, converts it to DC, switches it at a high frequency and then filters it back to DC at each rail voltage. They have obviously modded this PSU so that it can take DC directly in at a much lower voltage and still work so the PSU and UPS are combined. I find this neat.
Their pictured server does not even have redundant power supplies.
Perhaps one of the most popular US shows, but it seems US audiences just aren't that into science fiction.
US audiences tend not to have patience for story-arcs, partly because the networks like to move episodes around so it gets hard to find them or plan your week around them. Lastly, the quantity of advertising on US shows has got to the point where you have to be a masochist to view anything live.
All that is interesting are the Nielsen ratings - live US viewers and Friday evening has a deserved reputation for being the graveyard of television series. If you record it (TiVO or whatever) it doesn't count, nor does Hulu.
Syndication sales happen too far downstream to save a show, remember TOS.
To be fair legit downloads with embedded US network style advertising wouldn't be interesting - the ads are too annoying and everyone would want to skip. As far as illegal downloads are concerned, the target group for BSG are amongst the worst offenders (opportunity plus inclination), again it doesn't count.
Anyway, we know they CAN rebuild a civilization, because they've already one it once on New Caprica.
From what I remember, New Caprica was a tent city - a refugee camp. I have no idea whether they even managed an orderly evacuation of equipment as well as people.
The main factors influencing dysentery is hygiene or as once succinctly put the distance between where you defecate and where you eat. High population densities increase risk especially in hot climates.
The problem comes down to how to bootstrap a civilisation with only 37K people and the equipment you could take with you. A settlement needs food supplies and cultivation. They need wheeled transport, dry storage and so on. In any case, the Rift Valley/Serengeti would not be amenable to much cultivation. There is reason that civilisation started in the area of the Tigris/Euphrates not in the savannahs of Africa.
Maybe that is what is good at the moment. Adjacent households on the same phase will interfere/use bandwidth.
...its buggy,...
I would disagree. I have second gen firmware on my Linksys devices and they are running fine. Maybe aircons nuke the power but we don't have any with the only significant power consumer in the household being the cooker.
...and its also expensive.
The Linksys units come in pairs at slightly more than $120. Others may be cheaper
As noted elsewhere, we had WiFi problems due to the house construction and ended up bridging a second WiFi router using Linksys Powerline tech (also Homeplug A/V). I would say that 100 Mbits/sec full-duplex is probably about right, but only if I link directly to the second router.
Our house is constructed on 4 levels. The connections come through in the basement which has a wired LAN. The floors are constructed using reinforced concrete. The DSL modem sits in the cellar utilities room. It is a Fritz/AVM Fon unit with builtin WiFi but the WiFi only gets from the cellar to the ground floor but, so straight repeater tech won't work. We use Linksys Powerline technology (LAN over Power tech with AES encryption) to get the signal to the top floor where we have a second wireless router. The advertised bandwidth is about 200 Mb/s but you will usually get a bit less, say about half of that).
In a domestic environment, with everything on the same phase, it works much better than wireless, partly because far fewer people use it, so less interference.
A server using the same standard (HomePlug A/V would be neat.
I have signed a piece of paper which forbids me revealing my passwords to anyone. My boss can never demand my password. If I get run over by a bus or whatever my boss can request a new password for my account.
Before my boss gets that password someone will check to see if access to my user if plus his own will give him the ability to override validation checks by impersonating me.
When I have passwords, I have a document that says that they are my personal responsibility. If we are talking about a non-personal id such as the management password on a router then when I share it with someone, we have shared responsibility until they change it. That is, they can screw things up and claim actually it was me sabotaging the system.
This is why organisations that care about security have lots of special procedures around password disclosure.
We protect our wireless, frankly because although I don't mind leachers, I am scared of cp. However, I do release the WPA keys to house guests when they need access, for example friends studying with our kids. Potentially whenever I do this, I should retain the data complete with matching between the MAC and the user.
Its old stuff though. A certain organisations headquarters at Vauxhall Cross are still under construction (building stuff still outside and no dishes on the roof.
There was a discussion on the disappearing Aral Sea on another forum. Someone was trying to use Google Earth to make a point but the imagery seems to be 7-9 years old.
Where I am currently posting from, in Germany the imagery is also about 7 years old. I seem to remember there is a way of getting the date of the imagery but we recognised an old car that we had then.
Google imagery is great, but please could they update it from time to time. I know that current satellite imagery is a valuable commodity and would happily settle for 2yrs old, but prefferably not older than 4.
I use the Linksys variant. It support a network name (like the ESSID) as well as AES encryption and as long as your key is truly random then it is secure. The signal will basically go through a number of houses that are on the same phase though.
I'm not sure what the issue is with local interference but its the only way we can get signal from the basement utilities room up to the top floor of the house where we have WiFi. WiFi by itself won't hack it as the floors are rebar and the metal content fracks up the signal.
The QM stores are a critical item. Many, many years ago I was involved in a project deploying VAXes (11/725, I think) onto ships. The computers not only look after stock levels, they also say where stores are, that is which bin to look in. If your ship has just had a major malfunction or suffered a hit, finding the spares to effect a repair is a priority.
If I recall, George 3 had something basic but it was difficult to block a program from accessing other files in the job. I seem to remember using a special file password option to protect individual files. I know that VME had more in this regard but I had very little contact with it.
As for Multics, I'm aware of some of what it had but I have never worked closely enough to know whether it is a full object/accessor rights system.
I seem to remember ACLs in VMS 4.5 (or possibly earlier) together with the reference monitor. Seoond half of the eighties, I believe and the concept was nicely documented in the VMS Security Handbook.
The army follows the orders of the Ministry of Defence. It is extremely difficult for them not to because the JCS are part of the MOD. Some forces are not part of the regular army such as the Honourable Artillery Company. They have a specific royal charter but they are fully integrated into the army command structure.
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As an AC noted, as it may not be noticed, I'm repeating, these are sealed 12v lead-acid batteries. This is the type of standby battery used for fire/burglar alarms and emergency exit lights. Zero maintenance and very safe.
All switched mode PSUs go from AC to DC to AC (high frequency) and then back to DC at the various rail voltages. The DC to high frequency AC to DC bit is very efficient because of the frequency (small inductors). The problem with a UPS is that it is stuck working at 50/60Hz which means large and lossy inductors. This much more efficient.
A switch mode PSU takes AC, converts it to DC, switches it at a high frequency and then filters it back to DC at each rail voltage. They have obviously modded this PSU so that it can take DC directly in at a much lower voltage and still work so the PSU and UPS are combined. I find this neat.
The whole server is redundant.
US audiences tend not to have patience for story-arcs, partly because the networks like to move episodes around so it gets hard to find them or plan your week around them. Lastly, the quantity of advertising on US shows has got to the point where you have to be a masochist to view anything live.
All that is interesting are the Nielsen ratings - live US viewers and Friday evening has a deserved reputation for being the graveyard of television series. If you record it (TiVO or whatever) it doesn't count, nor does Hulu.
Syndication sales happen too far downstream to save a show, remember TOS.
To be fair legit downloads with embedded US network style advertising wouldn't be interesting - the ads are too annoying and everyone would want to skip. As far as illegal downloads are concerned, the target group for BSG are amongst the worst offenders (opportunity plus inclination), again it doesn't count.
..and complaining about the absence of a nice cup of tea.
From what I remember, New Caprica was a tent city - a refugee camp. I have no idea whether they even managed an orderly evacuation of equipment as well as people.
The main factors influencing dysentery is hygiene or as once succinctly put the distance between where you defecate and where you eat. High population densities increase risk especially in hot climates.
The problem comes down to how to bootstrap a civilisation with only 37K people and the equipment you could take with you. A settlement needs food supplies and cultivation. They need wheeled transport, dry storage and so on. In any case, the Rift Valley/Serengeti would not be amenable to much cultivation. There is reason that civilisation started in the area of the Tigris/Euphrates not in the savannahs of Africa.
Maybe that is what is good at the moment. Adjacent households on the same phase will interfere/use bandwidth.
I would disagree. I have second gen firmware on my Linksys devices and they are running fine. Maybe aircons nuke the power but we don't have any with the only significant power consumer in the household being the cooker.
The Linksys units come in pairs at slightly more than $120. Others may be cheaper
As noted elsewhere, we had WiFi problems due to the house construction and ended up bridging a second WiFi router using Linksys Powerline tech (also Homeplug A/V). I would say that 100 Mbits/sec full-duplex is probably about right, but only if I link directly to the second router.
Otherwise I'm quite happy with it.
Our house is constructed on 4 levels. The connections come through in the basement which has a wired LAN. The floors are constructed using reinforced concrete. The DSL modem sits in the cellar utilities room. It is a Fritz/AVM Fon unit with builtin WiFi but the WiFi only gets from the cellar to the ground floor but, so straight repeater tech won't work. We use Linksys Powerline technology (LAN over Power tech with AES encryption) to get the signal to the top floor where we have a second wireless router. The advertised bandwidth is about 200 Mb/s but you will usually get a bit less, say about half of that).
In a domestic environment, with everything on the same phase, it works much better than wireless, partly because far fewer people use it, so less interference.
A server using the same standard (HomePlug A/V would be neat.
I have signed a piece of paper which forbids me revealing my passwords to anyone. My boss can never demand my password. If I get run over by a bus or whatever my boss can request a new password for my account.
Before my boss gets that password someone will check to see if access to my user if plus his own will give him the ability to override validation checks by impersonating me.
When I have passwords, I have a document that says that they are my personal responsibility. If we are talking about a non-personal id such as the management password on a router then when I share it with someone, we have shared responsibility until they change it. That is, they can screw things up and claim actually it was me sabotaging the system. This is why organisations that care about security have lots of special procedures around password disclosure.
We protect our wireless, frankly because although I don't mind leachers, I am scared of cp. However, I do release the WPA keys to house guests when they need access, for example friends studying with our kids. Potentially whenever I do this, I should retain the data complete with matching between the MAC and the user.
Please mod parent up, very relevant information.
Its old stuff though. A certain organisations headquarters at Vauxhall Cross are still under construction (building stuff still outside and no dishes on the roof.
There was a discussion on the disappearing Aral Sea on another forum. Someone was trying to use Google Earth to make a point but the imagery seems to be 7-9 years old.
Where I am currently posting from, in Germany the imagery is also about 7 years old. I seem to remember there is a way of getting the date of the imagery but we recognised an old car that we had then.
Google imagery is great, but please could they update it from time to time. I know that current satellite imagery is a valuable commodity and would happily settle for 2yrs old, but prefferably not older than 4.
You also have to remember that the BBC had to fill in for the low-budgets with plot and character development.
With good actors and a reasonable script you can act with a minimalist stage. Most British actors have theatre experience so this is easy for them.
I use the Linksys variant. It support a network name (like the ESSID) as well as AES encryption and as long as your key is truly random then it is secure. The signal will basically go through a number of houses that are on the same phase though.
I'm not sure what the issue is with local interference but its the only way we can get signal from the basement utilities room up to the top floor of the house where we have WiFi. WiFi by itself won't hack it as the floors are rebar and the metal content fracks up the signal.
The QM stores are a critical item. Many, many years ago I was involved in a project deploying VAXes (11/725, I think) onto ships. The computers not only look after stock levels, they also say where stores are, that is which bin to look in. If your ship has just had a major malfunction or suffered a hit, finding the spares to effect a repair is a priority.
But this was access based on user not on program? Could you give a program a right independently of the user?
If I recall, George 3 had something basic but it was difficult to block a program from accessing other files in the job. I seem to remember using a special file password option to protect individual files. I know that VME had more in this regard but I had very little contact with it.
As for Multics, I'm aware of some of what it had but I have never worked closely enough to know whether it is a full object/accessor rights system.
The Orange book was already out in 1983, some ten years before the first of these two patents.
I seem to remember ACLs in VMS 4.5 (or possibly earlier) together with the reference monitor. Seoond half of the eighties, I believe and the concept was nicely documented in the VMS Security Handbook.
The army follows the orders of the Ministry of Defence. It is extremely difficult for them not to because the JCS are part of the MOD. Some forces are not part of the regular army such as the Honourable Artillery Company. They have a specific royal charter but they are fully integrated into the army command structure.