I believe you are confusing MINIX with TENEX due to the fact that the author of MINIX wrote a commonly used text, "Modern Operating Systems", and contains a short section with diagram on the TENEX page faulting password attack.
IIRC The delay was not due to the password comparison, but to the fact that the DEC-10 hardware running TENEX would signal the user on the presence of page faults. The attacker could align the tested password in memory along a page boundary and check whether the page fault occurred.
Thank god most legal jurisdictions in the country I live in do not agree. In every state I have lived in, 5 so far, it is legal to prevent or terminate a rape via deadly force.
Rape is generally considered a 'forcible felony', along with burglary, kidnapping, carjacking, aggravated assault, attempted murder...
Why does there seem to be absolutely no community pressure for google to provide stronger authentication and account recovery features?
The fact that google provides fantastic free products does not diminish their responsibility to mitigate the damage done to their clients by account hijacking.
I think that anyone who knows somebody who has had an account irretrievably hijacked will understand this sentiment.
If you are doing anything intensely personal or sensitive with gmail, you are an idiot. Too bad the vast majority of the public doesn't understand that if their account gets hijacked, it is game over, and google is completely non-interested in assisting the user to recover the account.
What you think the law is and what the White House/CIA/NSA think the law is are two very different things.
To wit: Blackwater's globe-hopping wet-work squad doing dry-runs over the past few years. That was a real-life BLACKBRIAR just waiting for the go-ahead to kill or capture HVT's anywhere, anytime.
Reflect on the history of USG covert ops, and you have got to come to the conclusion that at any given time, the USG is involved in a handful of projects that will lead to future embarassment, scandal, shock, or lawsuits.
That line of thinking is informed purely by ignorance of Chinese defense planning and funding.
How do you explain billions of Chinese weapons R&D on projects designed specifically to defeat combat platforms that only the US deploys?
Three Mile Island was a casualty initiated by poor maintenance practices, and blossomed into continually worsening conditions until a senior supervisor arrived who truly understood the indications the plant monitoring systems were giving the control team. It was not handled correctly, and the reactor was destroyed due to a desire to protect the value of components which should have been sacrificed for reactor safety. The prime reason TMI did not result in chernobyl conditions were better american procedural compliance and a simpler, safer reactor design. Chernobyl was caused by the reactor entering unpredictable phases of operation whose complexity of control exceeded what you could expect any control team in the world to understand the dynamics of. TMI was an absolute disaster, a chain of errors and problems that should never have been allowed to exist or sustained by improper action. With that said, the american nuclear culture has learned the lessons it has provided.
TMI was a BIG problem. A reactor was destroyed, and it was avoidable, caused by people doing things they shouldn't have done. They were armed with training and the indications they needed to make the right decisions, but they didn't, either due to stress or a culture of living with faulty indication and control systems. Operating in accordance with good principles solves these problems.
Can you buy an HDR video camera?
The technology enables effects not possible with current video cameras.
Plenty of people don't have the means to "just buy a better HD camera in the damn first place"
Your brother has given you some "bad gouge" as it is called in the navy. Your brother heard some information which has been in the public domain for exactly 20 years third-hand and it got jumbled along the way.
The same company which would run CFD simulations to develop a quiet screw would not be the same company which builds ultra-high end dual use 5-axis cutting machines? A large prime contractor like lockheed, EB, raytheon... could manage and deliver such a project, but would not build the cutting machine. existing technology is sufficient to cut any conventional geometry screw.
The incident you speak of was the Toshiba-Konigsberg scandal.
Toshiba sold the quieting technology (multi-axis design) to the russians, Konigsberg sold the high-precision numerical machine controllers.
Chinese subs are nowhere near as quiet as American submarines. Hopefully it stays that way.
Who suggested that? I stated that chemical weapons have been found in Iraq. Chemical weapons are available to terrorists in Iraq. They have, knowingly or not, used them as an IED. Dispute that, don't put words in my mouth.
Have you ever googled "sarin iraq"? I'll assume not as you would find, "Gasp!", dozens of examples of chemical munitions found in Iraq.
Before speaking so condescendingly, please do two and half minutes of research for yourself.
one of the dozens:
http://www.usatoday.com/news/world/iraq/2004-07-01 -poland-iraq-sarin_x.htm
This is extremely improbable!
The general mode of damage to cell structure is the formation of toxic chemical ions in the cytoplasm. The reason rapidly dividing cells are more prone to radiation damage and cancer is the lack of protection from the cytoplasm during division (which the ovum does not ever do). It is highly improbable that an ovum that will in the future be fertilized, could be exposed to enough radiation to cause a meaningful genetic defect via direct ionization of the DNA, yet survive the toxic chemical compounds formed in the cytoplasm of the cell by other incident photons.
Have there ever been documented cases of such a mode of exposure? I doubt it.
Furthermore, this is still direct exposure to precursor cells of the child.
You remember incorrectly. Genetic effects were not observed on children who were conceived after the attack. The only way a child is going to be affected is if it is directly exposed or if the mother were to have an uptake of radioactivity large enough to expose (significantly) the child some time later. An uptake of this size would preclude the mother from living long enough to give birth.
I think many people choose not to use iTunes because it simply does not suit their needs as well as other softwares, or in some cases, not at all. Case in point: I have never been successful in getting iTunes to index my music library. Always crashes. If someone reading this has been successful in getting iTunes to index half a terabyte, please speak up. Windows Media Player as well as Winamp do it fine.
I think you should resort to invective when you know a little more than nothing of the topic at hand.
First off, that was Admiral Rickover.
Second, tritium, nitrogen-16, nitrogen-17, and carbon-14 are radioactive byproducts from the WATER ALONE. While only tritium and carbon-14 exhibit long enough half lives to be of concern for environmental release, large amounts do build up in the reactor coolant.
Third, the water does not last the life of the system. Continually greater amounts of water that has been in the primary loop is generated and released to the environment, either by direct discharge to the sea or by evaporation losses in holding tanks.
Fourth, take a look at your diagram, the P in PWR stands for pressurized. Interestingly enough, PWR's accomplish this by BOILING water in the pressurizer.
No, it would be the FIRST thing you were worried about. Containment is the name of the game to prevent public exposure to activity generated by your power plant. Concerning core safety, a dozen boiler tube leaks into the secondary cooling system is of little concern as long as the through-tube corrosion rate is maintained low enough to prevent a significant rupture either through the primary head, tube sheet, or tube bundle. The presence of activated corrosion products would in all likelihood migrate to the drinking water boilers and become detectable in the effluent of your desalinization plant. These kinds of boilers (reboilers) boil very impure water and are extremely susceptible to, and continually operate with tube leaks. Basically, by the time you had 1% of the primary->secondary tube leaks necessary to be of concern to core safety (SLR casualty), you would have a public health crisis.
Mod: Why would you mod something as informative when you know nothing of the topic?
Tens of thousands of deaths from cancer from activated the activated magnesium, calcium, carbon, and oxygen in tap water? I can't believe the curie content of a power-scale reactor coolant system could exceed ~100 curies. The fission product inventory of a power-generating core is in the magnitude of upwards of tens of billions of short lived curies. This is the concern. Crud inventory pales in comparison. You ever hear of the risk around chernobyl from cobalt and iron isotopes? Probably not. More like strontium, and in the short term, the iodine series.
The reason you would not use tap quality water in a reactor coolant system is chemical corrosion. The activation of typical drinking water impurity elements would be negligible compared to plant corrosion product activation. It is of little concern in maintenance activities and of no concern at the level of a severe fission product release.
The principle is not sound. Running seawater as your secondary loop is outlandish. SCC or pitting is likely to occur in short order in any material, never mind the thermodynamic losses and downtime of the plant associated in cleaning the boilers of such a plant (if a material were developed that could withstand it). As your tertiary it is possible, but i don't think it would be politically viable to supply drinking water from a nuclear power plant.
How can this be modded insightful?
In the context of the recent spate of significant circumferential SCC on CRDM stubs and the incredible corrosion found on the davis-besse head, that a nuclear meltdown could not occur is absolutely preposterous. A 1/4" more corrosion through the davis-besse head (down only to the stainless steel liner) and a failure in the high-capacity ECCS and that's exactly what could have occurred.
Yes, current nuclear power stations are at the forefront of industrial safety, hygiene, and operational excellence. That an accident cannot happen is foolish, and an attitude that would lead to disaster if accepted in the industry.
Constructive Dissatisfaction is a good attitude.
And a coal plant, in the event of an accident cannot poison the surrounding envrions and people living nearby. This is the point! A coal plant emits more radioactivity in the form of trans-uranics than even a BWR does in fission products, but in the event of an accident, radioactivity emission CEASES, it does not increase 12 ORDERS OR MAGNITUDE!
It's people like you who we do not need being involved with nuclear power, not to be inflammatory, but prudent.
Slashdot Mirror
I believe you are confusing MINIX with TENEX due to the fact that the author of MINIX wrote a commonly used text, "Modern Operating Systems", and contains a short section with diagram on the TENEX page faulting password attack.
IIRC The delay was not due to the password comparison, but to the fact that the DEC-10 hardware running TENEX would signal the user on the presence of page faults. The attacker could align the tested password in memory along a page boundary and check whether the page fault occurred.
Thank god most legal jurisdictions in the country I live in do not agree. In every state I have lived in, 5 so far, it is legal to prevent or terminate a rape via deadly force. Rape is generally considered a 'forcible felony', along with burglary, kidnapping, carjacking, aggravated assault, attempted murder...
Agreed, and not just Taiwan.
Why does there seem to be absolutely no community pressure for google to provide stronger authentication and account recovery features? The fact that google provides fantastic free products does not diminish their responsibility to mitigate the damage done to their clients by account hijacking. I think that anyone who knows somebody who has had an account irretrievably hijacked will understand this sentiment. If you are doing anything intensely personal or sensitive with gmail, you are an idiot. Too bad the vast majority of the public doesn't understand that if their account gets hijacked, it is game over, and google is completely non-interested in assisting the user to recover the account.
What you think the law is and what the White House/CIA/NSA think the law is are two very different things. To wit: Blackwater's globe-hopping wet-work squad doing dry-runs over the past few years. That was a real-life BLACKBRIAR just waiting for the go-ahead to kill or capture HVT's anywhere, anytime. Reflect on the history of USG covert ops, and you have got to come to the conclusion that at any given time, the USG is involved in a handful of projects that will lead to future embarassment, scandal, shock, or lawsuits.
That line of thinking is informed purely by ignorance of Chinese defense planning and funding. How do you explain billions of Chinese weapons R&D on projects designed specifically to defeat combat platforms that only the US deploys?
Three Mile Island was a casualty initiated by poor maintenance practices, and blossomed into continually worsening conditions until a senior supervisor arrived who truly understood the indications the plant monitoring systems were giving the control team. It was not handled correctly, and the reactor was destroyed due to a desire to protect the value of components which should have been sacrificed for reactor safety. The prime reason TMI did not result in chernobyl conditions were better american procedural compliance and a simpler, safer reactor design. Chernobyl was caused by the reactor entering unpredictable phases of operation whose complexity of control exceeded what you could expect any control team in the world to understand the dynamics of. TMI was an absolute disaster, a chain of errors and problems that should never have been allowed to exist or sustained by improper action. With that said, the american nuclear culture has learned the lessons it has provided. TMI was a BIG problem. A reactor was destroyed, and it was avoidable, caused by people doing things they shouldn't have done. They were armed with training and the indications they needed to make the right decisions, but they didn't, either due to stress or a culture of living with faulty indication and control systems. Operating in accordance with good principles solves these problems.
Can you buy an HDR video camera? The technology enables effects not possible with current video cameras. Plenty of people don't have the means to "just buy a better HD camera in the damn first place"
Your brother has given you some "bad gouge" as it is called in the navy. Your brother heard some information which has been in the public domain for exactly 20 years third-hand and it got jumbled along the way. The same company which would run CFD simulations to develop a quiet screw would not be the same company which builds ultra-high end dual use 5-axis cutting machines? A large prime contractor like lockheed, EB, raytheon... could manage and deliver such a project, but would not build the cutting machine. existing technology is sufficient to cut any conventional geometry screw. The incident you speak of was the Toshiba-Konigsberg scandal. Toshiba sold the quieting technology (multi-axis design) to the russians, Konigsberg sold the high-precision numerical machine controllers. Chinese subs are nowhere near as quiet as American submarines. Hopefully it stays that way.
Who are you to decide what is universally understood? Is it possible that many people consider any NBC munition a WMD?
Who suggested that? I stated that chemical weapons have been found in Iraq. Chemical weapons are available to terrorists in Iraq. They have, knowingly or not, used them as an IED. Dispute that, don't put words in my mouth.
http://www.foxnews.com/story/0,2933,120268,00.html
Have you ever googled "sarin iraq"? I'll assume not as you would find, "Gasp!", dozens of examples of chemical munitions found in Iraq. Before speaking so condescendingly, please do two and half minutes of research for yourself. one of the dozens: http://www.usatoday.com/news/world/iraq/2004-07-01 -poland-iraq-sarin_x.htm
Maybe I don't read the papers, but i do read the news online and in places not accessible to many here. Thousands of pounds of pre-Gulf War Stock remains in the bunkers at Al-Muthanna and Khamisayaa. Everything from mustard gas to cyclosarin to VX-2. Terrorists have used, albeit probably unknowingly, chemical munitions as IED's. Why was this not more widely reported? I leave that to your speculation. http://www.google.com/search?q=sarin+iraq+ied http://odci.gov/cia/reports/iraq_wmd_2004/chap5_an nxF.html
http://www.foxnews.com/story/0,2933,120137,00.html
http://www.msnbc.msn.com/id/4997808/
http://www.katc.com/Global/story.asp?S=1873019&nav =EyB0NBHX ...
This is extremely improbable! The general mode of damage to cell structure is the formation of toxic chemical ions in the cytoplasm. The reason rapidly dividing cells are more prone to radiation damage and cancer is the lack of protection from the cytoplasm during division (which the ovum does not ever do). It is highly improbable that an ovum that will in the future be fertilized, could be exposed to enough radiation to cause a meaningful genetic defect via direct ionization of the DNA, yet survive the toxic chemical compounds formed in the cytoplasm of the cell by other incident photons. Have there ever been documented cases of such a mode of exposure? I doubt it. Furthermore, this is still direct exposure to precursor cells of the child.
You remember incorrectly. Genetic effects were not observed on children who were conceived after the attack. The only way a child is going to be affected is if it is directly exposed or if the mother were to have an uptake of radioactivity large enough to expose (significantly) the child some time later. An uptake of this size would preclude the mother from living long enough to give birth.
I think many people choose not to use iTunes because it simply does not suit their needs as well as other softwares, or in some cases, not at all. Case in point: I have never been successful in getting iTunes to index my music library. Always crashes. If someone reading this has been successful in getting iTunes to index half a terabyte, please speak up. Windows Media Player as well as Winamp do it fine.
I think you should resort to invective when you know a little more than nothing of the topic at hand. First off, that was Admiral Rickover. Second, tritium, nitrogen-16, nitrogen-17, and carbon-14 are radioactive byproducts from the WATER ALONE. While only tritium and carbon-14 exhibit long enough half lives to be of concern for environmental release, large amounts do build up in the reactor coolant. Third, the water does not last the life of the system. Continually greater amounts of water that has been in the primary loop is generated and released to the environment, either by direct discharge to the sea or by evaporation losses in holding tanks. Fourth, take a look at your diagram, the P in PWR stands for pressurized. Interestingly enough, PWR's accomplish this by BOILING water in the pressurizer.
How about HTRE-3 and SL-1?
No, it would be the FIRST thing you were worried about. Containment is the name of the game to prevent public exposure to activity generated by your power plant. Concerning core safety, a dozen boiler tube leaks into the secondary cooling system is of little concern as long as the through-tube corrosion rate is maintained low enough to prevent a significant rupture either through the primary head, tube sheet, or tube bundle. The presence of activated corrosion products would in all likelihood migrate to the drinking water boilers and become detectable in the effluent of your desalinization plant. These kinds of boilers (reboilers) boil very impure water and are extremely susceptible to, and continually operate with tube leaks. Basically, by the time you had 1% of the primary->secondary tube leaks necessary to be of concern to core safety (SLR casualty), you would have a public health crisis.
Mod: Why would you mod something as informative when you know nothing of the topic? Tens of thousands of deaths from cancer from activated the activated magnesium, calcium, carbon, and oxygen in tap water? I can't believe the curie content of a power-scale reactor coolant system could exceed ~100 curies. The fission product inventory of a power-generating core is in the magnitude of upwards of tens of billions of short lived curies. This is the concern. Crud inventory pales in comparison. You ever hear of the risk around chernobyl from cobalt and iron isotopes? Probably not. More like strontium, and in the short term, the iodine series. The reason you would not use tap quality water in a reactor coolant system is chemical corrosion. The activation of typical drinking water impurity elements would be negligible compared to plant corrosion product activation. It is of little concern in maintenance activities and of no concern at the level of a severe fission product release.
The principle is not sound. Running seawater as your secondary loop is outlandish. SCC or pitting is likely to occur in short order in any material, never mind the thermodynamic losses and downtime of the plant associated in cleaning the boilers of such a plant (if a material were developed that could withstand it). As your tertiary it is possible, but i don't think it would be politically viable to supply drinking water from a nuclear power plant.
Agreed. The ignorance of the public is the anti-nuclear power movement's most powerful tool.
How can this be modded insightful? In the context of the recent spate of significant circumferential SCC on CRDM stubs and the incredible corrosion found on the davis-besse head, that a nuclear meltdown could not occur is absolutely preposterous. A 1/4" more corrosion through the davis-besse head (down only to the stainless steel liner) and a failure in the high-capacity ECCS and that's exactly what could have occurred. Yes, current nuclear power stations are at the forefront of industrial safety, hygiene, and operational excellence. That an accident cannot happen is foolish, and an attitude that would lead to disaster if accepted in the industry. Constructive Dissatisfaction is a good attitude. And a coal plant, in the event of an accident cannot poison the surrounding envrions and people living nearby. This is the point! A coal plant emits more radioactivity in the form of trans-uranics than even a BWR does in fission products, but in the event of an accident, radioactivity emission CEASES, it does not increase 12 ORDERS OR MAGNITUDE! It's people like you who we do not need being involved with nuclear power, not to be inflammatory, but prudent.