TI's scientific and statistical calculator market share is waiting for an Android tablet or iPad app to come along and render it completely irrelevant.
What do you mean waiting? I have an iPhone app, Perpenso Calc 4 that offers the functionality of the non-graphing TI and HP scientific, statistical and hex calculators and more. It offers a la carte pricing so you only pay for the functionality you need. Features like the alternate worksheet interface leverage the handheld computer nature of the device.
Do they run for weeks to months on 4 x AAA user replaceable batteries?
I have an HP-50g now but I have changed the batteries in my 20 year old HP-48G twice. I swap out the 4 x AAA NiMH cells on my HP-50g about every year whether it needs it or not.
Section 798 deals with the disclosure of information. The information was already disclosed, however. So where is the problem?
The wording of the law is "Whoever knowingly and willfully communicates, furnishes, transmits, or otherwise makes available to an unauthorized person, or publishes". It doesn't really matter how they got it.
"The provision applies only to information related to cryptographic systems and information related to communications intelligence specially designated by a U.S. government agency for "limited or restricted dissemination or distribution.""
Criminal Prohibitions on the Publication of Classified Defense Information - Congressional Research Service - October 18, 2010
We already have several laws that make the disclosure of US Defense information illegal.
Disclosure is not publication.
". . . we are aware of no case in which a publisher of information obtained through unauthorized disclosure by a government employee has been prosecuted for publishing it. .."
Criminal Prohibitions on the Publication of Classified Defense Information - Congressional Research Service - October 18, 2010
Did you know that in 2012 all new cars are going to be required to include electronic stability control? (The horror!) What does that cost?
Electronic stability control works through the ABS braking system. One of the costs at least for my GMC, is that in the event of loss of engine vacuum, the brakes become next to useless after one use and I mean stand on the brake and push my head into the ceiling useless. The parking brake actually becomes a better option. Luckily loss of engine vacuum is unlikely with a manual transmission.
I notice that our government officials are very good at making laws that "appear" to kosher with the constitution when they actually are NOT. Lets make it simple. If you don't like the first Amendment and its freedom of the press then you just make a law that says possession of "classified/government/secrect" information is illegal as heck. This way, you can maintain your image of supporting the Constitution while not having to fear it. You can classify the fact that they take a crap each morning as a security precaution and make it a capital offense if that information is given to the press!
Really, if that was following the rules of engagement, the person who wrote them needs to be behind bars. If it wasn't, the pilot, gunner, and quite possibly the person who gave authorization to fire should be behind bars.
I would not hold my breath on that. The rules of engagement worked at Ruby Ridge also.
The difference is that the material leaked to an upstart internet publisher instead of the established media companies. How dare the internet scoop the New York Times! *
HVDC does not rely on solid state power electronics because of device voltage limitations. Just like big RF amplifiers, HVDC relies on vacuum and gas tube technology.
I was wrong here. They are using thyristor stacks now (optically triggered?). I am surprised that tube based converters are not cheaper at high power levels.
However, wires have capacitance. Overcoming that capacitance requires energy, which is an inefficiency.
The capacitance itself does not cause losses but only capacitive reactance which can be neutralized if necessary to prevent losses do to circulating currents. Capacitance is added to cancel inductive reactance anyway although not on the highest voltage transmission lines. Dielectric losses are real but not as significant as corona losses at high voltages.
Modern solid state power electronics also make changing DC voltages efficient and practical enough to use HVDC across long distances and Medium-Low Voltage AC for local distribution.
HVDC does not rely on solid state power electronics because of device voltage limitations. Just like big RF amplifiers, HVDC relies on vacuum and gas tube technology.
Add superconductors to the mix and the advantage of DC increases substantially.
Superconducting transmission lines help AC just as much as DC. They reduce ohmic losses.
Transmission lines are HVDC because of either economic reasons or because asynchronous AC grids are to be connected. The added complexity and expense of the AC/DC conversion at either end is made up for by the cheaper transmission line necessary for a given power level and efficiency. Radiative losses, especially from corona discharge, increase as a non-linear function of voltage (Cube? I forget.) and AC has a poorer peak to RMS voltage than DC causing more losses from corona discharge. When the transmission line is long enough, it ultimately costs less to use DC rather than AC.
Since it is not really possible to sell unused IP addresses, I wonder if they will end up being used in VPN concentrators as an extra revenue source. A IP address holder could effectively sell them to a company providing VPN services.
The side effect of charging too much may be a loss in their ability to monitor the traffic of those who makes the most use of their services if those users start buying routable VPN accounts.
I suspect another cycle of porn and piracy is going to lead the way toward IPv6 when p2p file sharing starts to have problems with widely deployed IPv4 NAT.
The NAT implementations have to cooperate for this to work by allowing the endpoint IPs to change. Strict NAT would identify the rendezvous server and the other party as separate connections not allowing one to substitute for the other.
Netfiix can fix this imbalance. Change their front end apps to send an endless stream of zeros to a bit bucket in Level3.
Generating bogus traffic to encourage or alter peering relationships is not unheard of. Often it works because service providers usually lack the traffic analysis capabilities to detect it.
Everything that talks in the cell phone bands is supposed to be part of a system that has RF power level control and talks to the cell phone control station. That's what keeps the transmitters from jamming each other. Adding a dumb transmitter isn't helpful. The right answer would be a "femtocell" unit which connects to an external antenna and connected to the cellular network, and is itself a proper player in the RF protocol.
Since the boosters are linear amplifiers, when the cell tower and the cell phone adjust transmit power the booster amplifier power output will adjust also. It just functions as another fixed gain or loss element.
The advantage for the ISP is that the traffic with the peer no longer goes over its own transit links to other networks. This is especially advantageous when the cost of peering is just a network cable run at a peering point versus an expensive telecommunications line used for transit.
No because the "dangerous weapons" would blow holes to the body of the airplane, starting the decompression process. If done fast enough it can bring the airplane down by tearing the plane apart. Nice try to make me more nervous flying domestic flights by suggesting firearms on-board.
Mythbusters tested this and had to go to extremes to duplicate Hollywood physics. Because of the way high altitude passenger planes work, you would have to shoot one hell of a lot of holes through the fuselage to even cause the air cabin pressure to start dropping never mind structural failure leading to explosive decompression.
Excluding the shared peril of an airplane, are you also nervous in States which have shall issue CCW laws?
That's like arguing airplanes would be safer if we installed anti-personal mines in each person's seat so if at any point during the flight they tried to stand up to take control of the cockpit they'd explode. I'm all for the 2nd amendment but when one bullet has the possibility to take down 300 people w/o a fight the risk far outweighs any reward.
There is a big difference between explosive weapons and small arms.
If we are to believe the FAA, transmitters have the possibility to take down 300 people. How does the risk to reward work for that?
Absolutely it would have. There just would have been more dead people before the planes hit.
How dare the flight 93 passengers resist! Their actions only caused more deaths! That is a job for the proper authorities like the select/organized militia, err, national guard!
My point is that IPv6 is not more difficult to setup than IPv4 because of any technical reasons and it does not have to be less secure. The lack of IPv6 consumer routers reflects the economics of the situation. There is very little demand and I doubt the situation will change until ISP level NAT starts causing significant problems.
If you have a m0n0wall system, adding IPv6 can amount to turning it on, selecting the tunnel type (RFC 3056 tunnels require no configuration and are available through most if not all IPv4 connections), and adding one outgoing firewall rule. There are consumer routers available now already configured that way which is why people sometimes discover they have IPv6 connectivity without having done anything.
Too bad it is impossible to produce a router with an IPv6 stateful firewall which defaults to block incoming connections which would duplicate the security of NAT without breaking protocols which rely on end to end authentication. In addition, IPv6 autoconfiguration unfortunately requires at least a dozen settings on every machine to get working.
Slashdot Mirror
Do they run for weeks to months on 4 x AAA user replaceable batteries?
I have an HP-50g now but I have changed the batteries in my 20 year old HP-48G twice. I swap out the 4 x AAA NiMH cells on my HP-50g about every year whether it needs it or not.
Jack Sparrow: I thought you were supposed to keep to the code.
Mr. Gibbs: We figured they were more actual guidelines.
http://www.imdb.com/title/tt0325980/quotes
It's more of a guideline than executive order.
"The provision applies only to information related to cryptographic systems and information related to communications intelligence specially designated by a U.S. government agency for "limited or restricted dissemination or distribution.""
Criminal Prohibitions on the Publication of Classified Defense Information - Congressional Research Service - October 18, 2010
http://www.fas.org/sgp/crs/secrecy/R41404.pdf
Disclosure is not publication.
". . . we are aware of no case in which a publisher of information obtained through unauthorized disclosure by a government employee has been prosecuted for publishing it. . ."
Criminal Prohibitions on the Publication of Classified Defense Information - Congressional Research Service - October 18, 2010
http://www.fas.org/sgp/crs/secrecy/R41404.pdf
Electronic stability control works through the ABS braking system. One of the costs at least for my GMC, is that in the event of loss of engine vacuum, the brakes become next to useless after one use and I mean stand on the brake and push my head into the ceiling useless. The parking brake actually becomes a better option. Luckily loss of engine vacuum is unlikely with a manual transmission.
This is being worked on. Give it some time.
http://www.wired.com/threatlevel/2010/12/shield/
http://writ.news.findlaw.com/dean/20030926.html
I would not hold my breath on that. The rules of engagement worked at Ruby Ridge also.
The difference is that the material leaked to an upstart internet publisher instead of the established media companies. How dare the internet scoop the New York Times! *
* I am only half kidding.
I was wrong here. They are using thyristor stacks now (optically triggered?). I am surprised that tube based converters are not cheaper at high power levels.
The capacitance itself does not cause losses but only capacitive reactance which can be neutralized if necessary to prevent losses do to circulating currents. Capacitance is added to cancel inductive reactance anyway although not on the highest voltage transmission lines. Dielectric losses are real but not as significant as corona losses at high voltages.
HVDC does not rely on solid state power electronics because of device voltage limitations. Just like big RF amplifiers, HVDC relies on vacuum and gas tube technology.
Superconducting transmission lines help AC just as much as DC. They reduce ohmic losses.
Transmission lines are HVDC because of either economic reasons or because asynchronous AC grids are to be connected. The added complexity and expense of the AC/DC conversion at either end is made up for by the cheaper transmission line necessary for a given power level and efficiency. Radiative losses, especially from corona discharge, increase as a non-linear function of voltage (Cube? I forget.) and AC has a poorer peak to RMS voltage than DC causing more losses from corona discharge. When the transmission line is long enough, it ultimately costs less to use DC rather than AC.
In something about the size of a Compact Flash card?
Since it is not really possible to sell unused IP addresses, I wonder if they will end up being used in VPN concentrators as an extra revenue source. A IP address holder could effectively sell them to a company providing VPN services.
The side effect of charging too much may be a loss in their ability to monitor the traffic of those who makes the most use of their services if those users start buying routable VPN accounts.
I suspect another cycle of porn and piracy is going to lead the way toward IPv6 when p2p file sharing starts to have problems with widely deployed IPv4 NAT.
The NAT implementations have to cooperate for this to work by allowing the endpoint IPs to change. Strict NAT would identify the rendezvous server and the other party as separate connections not allowing one to substitute for the other.
Generating bogus traffic to encourage or alter peering relationships is not unheard of. Often it works because service providers usually lack the traffic analysis capabilities to detect it.
The Peering Playbook: Strategies of Peering Networks
Since the boosters are linear amplifiers, when the cell tower and the cell phone adjust transmit power the booster amplifier power output will adjust also. It just functions as another fixed gain or loss element.
The advantage for the ISP is that the traffic with the peer no longer goes over its own transit links to other networks. This is especially advantageous when the cost of peering is just a network cable run at a peering point versus an expensive telecommunications line used for transit.
The Art of Peering: The Peering Playbook
Blind signatures allow anonymous transactions:
http://en.wikipedia.org/wiki/Anonymous_internet_banking
No because the "dangerous weapons" would blow holes to the body of the airplane, starting the decompression process. If done fast enough it can bring the airplane down by tearing the plane apart. Nice try to make me more nervous flying domestic flights by suggesting firearms on-board.
Mythbusters tested this and had to go to extremes to duplicate Hollywood physics. Because of the way high altitude passenger planes work, you would have to shoot one hell of a lot of holes through the fuselage to even cause the air cabin pressure to start dropping never mind structural failure leading to explosive decompression.
Excluding the shared peril of an airplane, are you also nervous in States which have shall issue CCW laws?
That's like arguing airplanes would be safer if we installed anti-personal mines in each person's seat so if at any point during the flight they tried to stand up to take control of the cockpit they'd explode. I'm all for the 2nd amendment but when one bullet has the possibility to take down 300 people w/o a fight the risk far outweighs any reward.
There is a big difference between explosive weapons and small arms.
If we are to believe the FAA, transmitters have the possibility to take down 300 people. How does the risk to reward work for that?
Absolutely it would have. There just would have been more dead people before the planes hit.
How dare the flight 93 passengers resist! Their actions only caused more deaths! That is a job for the proper authorities like the select/organized militia, err, national guard!
My point is that IPv6 is not more difficult to setup than IPv4 because of any technical reasons and it does not have to be less secure. The lack of IPv6 consumer routers reflects the economics of the situation. There is very little demand and I doubt the situation will change until ISP level NAT starts causing significant problems.
If you have a m0n0wall system, adding IPv6 can amount to turning it on, selecting the tunnel type (RFC 3056 tunnels require no configuration and are available through most if not all IPv4 connections), and adding one outgoing firewall rule. There are consumer routers available now already configured that way which is why people sometimes discover they have IPv6 connectivity without having done anything.
Too bad it is impossible to produce a router with an IPv6 stateful firewall which defaults to block incoming connections which would duplicate the security of NAT without breaking protocols which rely on end to end authentication. In addition, IPv6 autoconfiguration unfortunately requires at least a dozen settings on every machine to get working.