Forgot your password?

Comment: Re:Come now. (Score 1) 102

by chmod a+x mojo (#47415343) Attached to: How Japan Lost Track of 640kg of Plutonium

Actually you can, you just need short refuel times to avoid burnoff in a LWR and some reprocessing. Also with proper cooling you can use reactor grade Pu in weapons ( late 50's it was successfully tested ).

I would think you could also separate the Pu-239 from the "useless" Pu-240 with a well tuned cyclotron, much like grabbing the U-235 from U-238. It would probably be easier and faster to just short fuel cycle a LWR and reprocess than separate the fuels with a single neutron mass difference though.

Comment: Re:What? (Score 1) 61

by chmod a+x mojo (#47300279) Attached to: Linux Mint 17 KDE Released

The "feature" is just icing on the cake. It was always possible to change the greeter backgrounds... individually in each greeter settings file.

From the way it sounds in this press release you can set the background once in a centralized space and it will automatically change the background for you in the event you switch your greeter for any reason ( not a very common occurrence barring major bugs being introduced) , saving you the "hassle" of having to go through and set up the new greeter background.

In other words it's polish, not a new killer feature.

Comment: Re:The headline is juicy, but hides a real problem (Score 1) 212

Probably whatever OTA Analog broadcasts are around ( no digital receivers so older analog is fine), VHS / DVDs from players from the same era, and whatever the local market that wants the damn things has available ETC.
Just because you are privileged and can afford cable / digital OTA / blueray ETC doesn't mean there isn't a market ( which there obviously is ) for older tech in less privileged areas.

Besides, I would rather see the stuff being used than have to have plants built for stripping the old crap of anything useful; I don't want the acids, bases, and assorted other harsh chemical shit needed for reclamation anywhere near me.

Comment: Re: They've been doing this for a year (Score 1) 202

by chmod a+x mojo (#47167371) Attached to: Netflix Ditches Silverlight For HTML5 On Macs

No, I haven't. I have a chatzilla profile I have set up ( and copied between machines so all are the same ) to log in with my credentials and join the channels I need to join. Plus I like / am used to the chatzilla interface, it's clean, tabbed in a sane way ( to me ), and generally doesn't get in the way.

XDCC is another factor, we do use XDCC for some group sharing since it is "easier" than sharing via FTP - you can just say "grab pack 59 for the updated blah blah blah" rather than having IRC ( or any chat program ) + a separate FTP client ( and setting up FTP access rights for each user, much easier done in iroffer-dinoex... only send to ops / half-ops in channel "X" and only if they are logged in and registered on the IRC network ) and typing out the path and filename. This way also avoids having to install apache or lighttpd and having to have either a domain name or cryptic IP remembered.

Comment: Re: They've been doing this for a year (Score 2) 202

by chmod a+x mojo (#47166247) Attached to: Netflix Ditches Silverlight For HTML5 On Macs

Not only that, but it literally takes like 20-30 minutes total + crouton and you can have a full OS running alongside ChromeOS. You can then switch between the two OS's with a really simple key combo.

I'm on a HP Chromebook right now, I spend most of the time in ChromeOS unless I need a dedicated IRC client or Zotero for a reference manager when I don't have WIFI ( otherwise I use Chrome Remote Desktop to my much higher horsepower Lenovo laptop with Word ETC), or playing the odd foreign film with subtitles in MPlayer. Google Docs ( offline even ) are good enough if you just have to bang out a short paper with only a few references or .doc/x correspondence to someone... you don't need a full huge office suite for these things, and if you DO need the full suite it is only a key combo away.

Why do I use a Chromebook? 1: it's a dual core x86_64 machine( meaning enough oomph to get at least some moderate to heavy work done) with easily 9+ hour battery life with WIFI on. 2: it weighs less than my higher powered laptop AND is thinner, both making it easier to carry around. 3: the keyboard and trackpad are 10x better than on my Lenovo ( even though the numpad is missing on the Chromebook ). 4: it's cheap enough that I don't care so much if it gets dirty / scratched / looks like ass after it has been out in the field for a while ( it cost 1/3 the base price of the Lenovo, 1/4 after the upgrades to the Lenovo, price not even comparable to a Mac laptop).

If I need real raw power I grab either my desktop or the Lenovo, but probably at least 90% of the work I do the Chromebook can handle easily. Documents are no problem, compiles have OK times, it can decode and playback 1080P H.264 full speed ( and output to HDMI), plays Netflix in downtimes ( in ChromeOS ), and does everything but play games ( and probably WINE / steam4Linux would actually work, I just don't use them ). The only real limitation is the not easily up-gradable 2Gb RAM means you have to be at least semi diligent in not leaving 600 tabs open and other stuff running when not needed.

Did I mention the keyboard ( other than the F1-12 keys being not labeled as such ) is awesome? Other than no backlighted keys the keyboard is as good as Macbook pro's I've typed on, and the trackpad is large and quite responsive... even with gestures.

Comment: Re:Linux soon? (Score 1) 202

by chmod a+x mojo (#47165411) Attached to: Netflix Ditches Silverlight For HTML5 On Macs

It's already in Chrome on Linux, if it's on a chromebook device "certified" by Google ( as far as I know this is just a "yes, it's a chromebook" and not "yes, this is user X that google knows about" I.E. pretty sure the "guest" account should work[1]). That means it is on the OSS Intel drivers.

I have no idea why the "certification" is even necessary, my chromebook is in developer mode ( meaning I have root level access, and can build / install binaries of pretty much anything I want ) and Netflix still runs. Netflix should just make the helper plugin available for chrome+Linux and get it over with.

[1]: I haven't actually tried this with the guest account, maybe I will have time later today...

Comment: Re:Big mistake (Score 1) 105

While I agree for the most part with hardware being DECENT, Samsung really has shitty antennas. I loved my S3, and I love my Note2, but the reception is absolute shit compared to the Motorolas I've had ( the OG droid / Bionic ETC ). The very same places that had been low signal but usable with the Motorola devices either have no signal and / or drop data and calls like flies. Same goes for the WIFI antennas.

This is on the same carrier network and all. I am not the only one to complain about this either, it's a pretty long running complaint with Samsung devices across the 'net.

Comment: Re:Godzilla! (Score 2) 75

by chmod a+x mojo (#47071705) Attached to: Japanese Court Rules Against Restarting Ohi Reactors

Well, this is the point I disagree on for several reasons:

1: The plant actually was designed to specifications of the largest projected tsunami and / or earthquake - the reason it had 9 meter seawalls and survived the earthquake with no damage. The non-waterproofed stuff was a major mistake as seen by water getting past the seawalls ( as well as the France / India reactors a decade prior that had similar issues and basically told Japan to fix these major flaws). While it was partially luck that some of the buildings had been undamaged, much more was preserved because of good design. The reactor buildings themselves, for example, were undamaged. The violence of this particular tsunami was not predicted, even by the seismologists who study the Japan trench; they didn't think it could capable of building enough stress to cause such a large megathrust and resulting tsunami as large as it did.

2: Actually the procedures for this type of emergency cooling ( including venting of radio-isotopes upon vessel pressure release ) is standard emergency procedures and trained extensively for. They basically ignored their emergency training and tried to do anything possible to avoid venting any radiation, which eventually failed.

3: We may have to agree to disagree, I have actually written a paper on the tsunami and its results at Fukushima ( as yet not complete enough to publish, feel free to write your own to refute it when it is ) so my viewpoints are pretty well set in stone from the data I have. If you can come up with some hard data and arguments in your cases favor I will certainly listen to them and adjust my views accordingly.

4: this is why I love slashdot, the occasional actual technical discussion between all the frosty piss and goatse AC trolling.

Comment: Re:Godzilla! (Score 1, Informative) 75

by chmod a+x mojo (#47071213) Attached to: Japanese Court Rules Against Restarting Ohi Reactors

I'm sorry, but you don't seem to understand the passive low pressure emergency core cooling on the BWR 3/4 systems.

As I said numerous times, depressurize the vessel and the passive gravity fed cooling works for up to days. The emergency coolant, that again was available, is located above the vessel. As long as the vessel is depressurized coolant can flow into the vessel at near the same rate as steam is bled off into the spent fuel pools dumping heat. Both the coolant and the fuel pools being used as a heatsink can be replenished with simple external hosing. The depressurization and steam bleed would release some radio gasses, mostly noble gasses ( 135-Xe for the first ~6-8 hours or so, some Kr isotopes ETC ) and Iodine. Heavier elements would tend to stay put inside the vessel.

Yes, its possible had the operators acted differently to mitigate the tsunami damage, the fuel melt may have been prevented. But that is not a cause. There reason the operators did not have the proper instrumentation to deal with a post tsunami wipe-out, is because the plant was not designed to cope with that event.

No, they had all the instrumentation needed. All they really needed was thermometers and volume estimation + maybe a calculator. Instead, being afraid of public outcry over radiation release they chose to trust complex instrument that require precise calibration that had just undergone 4+ minutes of heavy vibrations and then, in parts at least, flooding. See the passive cooling that was available to them, but unused due to fear of public outcry. The plant was capable of coping with the event, it was chosen not to, or at least chosen to cope in the way they had originally thought would result in little to no radiation being released. Unfortunately that was the wrong choice now that we know more from looking back on the disaster.


Had the plant been designed to cope with that event, emergency power sources would have been located in safe areas with protected feeds. Safety equipment would have been located above tsunami levels, and the plant would have had any extra needed instrumentation to perform the necessary operations during that event.

BTW, you can prove that a structure can withstand a force. It is quite easy and common.

The first part of this quote is what I said was lumped into human error, several times already as a matter of fact. And they had all the instrumentation and everything needed to cope, see the above arguments as for why they chose the way they did. As for the second part:
The magnitude of the event was unprecedented, as I said. As to "proving something can withstand a force", that is not what you said. You said ANY force, the plant in question was designed to withstand the biggest tsunami that data said was probable (9m seawalls, plant being located higher than the 9m seawalls, ETC).

Comment: Re:Godzilla! (Score 2, Insightful) 75

by chmod a+x mojo (#47070583) Attached to: Japanese Court Rules Against Restarting Ohi Reactors

This is absolutely false. While there may have been some functionality of the system left after the tsunami, it was not designed to operate under those conditions and it those limited functions were not available for very long, and therefore was not effectively operable is any reasonable sense.

You should review your sources, there are several factual errors in play here.
1: The low pressure emergency cooling was not damaged, it was fully functional but not used. The emergency coolant was available, and the heat sinks were also available. No external power would have been needed, these systems are gravity fed and designed as a last redundancy for situations where every other option failed. The reason this system was not used was mainly fear of radio-gas release and point 2.
2: it is the fault of the operators for every decision they made. They made the decision to blindly trust what they should have know were ( potentially, and in this case literally ) compromised sensor units and did not due any physical checks. I don't have the papers in front of me, but I believe it was unit #1 that actually melted first due to a stuck valve ( maintenance issues, not tsunami issues) and not dumping steam to the suppression ring and subsequently boiling dry within 6 hours. This should have been noticed if there had been physical checks of the systems. Sensors also indicated water levels that where meters higher than actual, again physical checks(temps and volumes of steam blow-off) and some simple math would have shown closer to true estimates - Decay heat should have been roughly 10-12% of full power generation, and the known volume of water in the vessel + loops can tell you the kJ's of heat being put into the water by how much water was being turned to steam / hour and at least estimates of how much water SHOULD be in the condensers VS how much water really WAS in the condensers. The first real reactors we had used less instrumentation to run than what they had available.
3: There are also other logical fallacies in your argument: You can never make anything "proof" against another force, only resistant. If something is not "proof" against the other force it shouldn't be built? We should never build anything then, we can't make it large space object impact proof.
As for the Fukushima daiichi plant, it was quite resistant to the tsunami, the reactors + reactor buildings themselves did not sustain significant damage until the actual meltdown and hydrogen explosions. It was only the emergency generators that really weren't up to snuff ( and there WAS power available from units 5-6 which had functional generators, just no easy way to route cable to units 1-4 through the muck and debris ) Again see points one and two for how this could, and in an ideal situation should, have been able to prevent the catastrophe.

Does this mean that there could / should have been more done? Of course more should have been done, both France and India sent out reports to the whole nuclear community detailing swamped emergency generator rooms over a decade prior to the Tohoku-Oki event, the very reason most other plants had waterproofed their generator rooms and survived relatively unscathed. I said specifically that this was part of the human error in the disaster.
  I can't comment on the plant being built on higher ground because I don't know the reasons why the particular place it was built had been chosen, but higher seawalls may have helped, but may not have. As far as my research has shown, for this area of Japan this was a freak occurrence. There was some evidence that other areas on the coast had seen tsunami events this large, but nothing concrete until data from this tsunami actually correlated to suspected paleo-tsunami evidence. Maybe we will find out that this magnitude event does impact the coast there more often, in that case it is true it should not have been built there; but that is using post fact data.

Comment: Re:Godzilla! (Score 3, Interesting) 75

by chmod a+x mojo (#47069739) Attached to: Japanese Court Rules Against Restarting Ohi Reactors

What the operators were forced to deal with after the Tsunami is not nearly as relevent and the fact that the Tsunami left the plant with no emergency power and water intrusion quickly disabled and remaining systems that were battery backed. This was the case because the plant, nor its safety systems, were designed to withstand the Tsunami.

Actually it is quite relevant. The plant could have been saved, and large scale radio-isotope release could have been avoided in the condition the plant was in after the tsunami. The low pressure emergency cooling was not affected by the tsunami, it was not used due to public fear of radiation, and the requirement that some radio-gasses would needs be released when the vessels are depressurized.
Does that mean the operators made the "wrong" choices? We can't know with 100% certainty, but all indications are ( and scientifically backed up in several published papers ) that it would have been the better idea to depressurize the vessels and use the several days worth of passive decay heat capacity of the spent fuel pools and suppression rings that is the backup built in for just this type of emergency. Gravity fed coolant was on hand, the LOC accident then would not have occurred and the fuel would not have melted. The net result would have been significantly reduced amounts of radio-isotopes released ( and all of them gone within ~1 week at most ) and no need for long term evacuation and cleanup.

If my tires are rated for maximum 50 mph, and I'm going 90 mph and lose control, and I tried to swerve and wind up hitting a tree, the problem was not that I swerved the wrong way, the problem was that I put the vehicle in situation it was not designed to safety handle.

It's actually more like you blew your tire while going 55 because your speedometer was slightly off, and saw two fields: one empty but appears to be behind a steep ditch and the other with a few trees in it but has a very shallow ditch. You steered towards the field with the shallower ditch due to fearing rolling the vehicle when encountering the steep ditch.
You ended up hitting one of the trees in the field, but later found out that the ditch in the empty field was just as shallow as the one bordering the field with the trees.

At the time you made the "right" decision. Looking back at it with better data, you made the wrong decision; the empty field would have been much better.

Comment: Re:Godzilla! (Score 4, Insightful) 75

by chmod a+x mojo (#47069347) Attached to: Japanese Court Rules Against Restarting Ohi Reactors

The major thing leading up to the meltdowns was human error, both in the emergency generator rooms / power conduits not being waterproofed, and the decisions regarding what to do with the reactors during an emergency situation. There were other plants that had gotten swamped, but did not suffer meltdowns, all due to waterproofing the emergency generator rooms; If I remember correctly one plant that was swamped and survived had quite literally finished the waterproofing only a few weeks prior.

Not only that, but the reactors most likely could have been saved even after the tsunami hit. The problem was the operators ( rightly, or wrongly ) were too afraid to depressurize the reactor vessels so passive low pressure emergency cooling measures could operate, these would have lasted long enough to get pumps and / or generators on site. This decision not to depressurize was due to public fear of "wah, small amounts of short lived Iodine and and noble radio gasses would escape with the steam" mentality and lead directly ( unknown at the time. the operator actions were quite reasonable and understandable - it is only hindsight that tells us what the best action should have been ) to the larger scale and broader spectrum radio-isotope release.

Comment: Re:Resolution (Score 1) 316

by chmod a+x mojo (#47050927) Attached to: Surface Pro 3 Has 12" Screen, Intel Inside

Yeah, half brain....

Lets do some basic math:
laptop with comparable specs in the processor / RAM department ( but really shitty 1366x768 resolution screen ): ~$500-600 - doesn't matter in the least if you could get it cheaper due to the cost of a comparable pen digitizer. look at spending over 1K for the laptop alone if you want a decent display of 1920x1080 at least.
Cintiq 13 inch - to be able to draw on screen ( comparable to the Surface Pro ) $1000
So you can lug around _2_ things, for $1500-1600 with shitty screen specs or you can get 1 unit that does all plus has a decent resolution for $800

The other option is to get the Wacom Cintiq companion for $1,800-2,300. Oh, and this is lower resolution. It's only 1920x1080 FHD.

So, who is the stupid one again?

Comment: Re:Resolution (Score 1) 316

by chmod a+x mojo (#47050727) Attached to: Surface Pro 3 Has 12" Screen, Intel Inside

In my view, content creation is best done with keyboard, mouse and a desktop / laptop. What sort of content can be created with a stylus on a tablet? That's neither the best tools nor the most cost effective

Yeah, silly Wacom making pen based graphics tablets for years.
Oh, and the Cintiq that they have had for years ( and costs a ton of money to buy ) must have been a bad move... just tossing that money out the window for no reason right? I mean a mouse and keyboard are obviously better for drawing / photo editing software right?

Comment: Re:Relocate the bloody thing (Score 1) 865

by chmod a+x mojo (#46923869) Attached to: Did the Ignition Key Just Die?

While it seems like a good idea... have you ever tried to replace one of those ungodly SAAB switches when / if they go out? It's a nightmare, literally EVERYTHING in that center console was tied together, and you can't just replace the switch... whole unit or nothing on those things, I had to bypass the whole thing and install an off / run / acc toggle and a push button engine crank switch. It was either that or spend $600-800 on the replacement ignition switch + ASSEMBLY.

If they made modern center console switches as easy to replace as steering column ( usually ) are I would be all for it though.

"No matter where you go, there you are..." -- Buckaroo Banzai