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Comment Re:Yeah (Score 2) 397

Given that the economy usually does better under Democrats, and given that the economy is still recovering from the MASSIVE crash that happened under the last bout of Republicanism. I think the idea that it's all just the businessmen are suddenly happy that they're being lead by a Republican; I'd say that that's a bit of a stretch to say the least.

I mean that's the thing about recovery, things trend upwards, and this story said things trended upwards. Personally I see zero chance that this is anything that could be ascribed to Trump.

Comment Retail Hell, More Proof Cats Are Better Than Dogs! (Score 1) 249

There's a reason people that own one cat go crazy and have brain damage and end up owning more of those things.

The Toxoplasma Gondii requires cats to multiply, so it alters the behavior of its host rodents in order to steer them towards a cat's digestive system.

Now, humans and cats have lived together for millenia; it makes perfect sense that the Toxoplasma Gondii might also have steered us into giving their furry brothels a comfortable place in our homes and our beds... And for the cats, they have two species directly feeding them: Mice and Men. Perfect case of symbiotic evolution.

You'll never see Lassie do anything that smart.

Now, back to the parent post about working at PetSmart:

I've seen coworkers that were normal before become irritable and irrational after getting a cat.

Are you sure that's not just caused by working retail for long enough?

And then there was me, working at Home Depot, wearing the trademark Orange Apron. We had a cat in the store; it ate the mice that lived on the birdseed in the Seasonal Department. As I walked into the lunchroom, about 30 people eating lunch, big shift change time of day...

"Hey Lawrence! I hear you found the store cat!"

"Well, I found part of the store cat..."

Comment Re:Other way? (Score 1) 249

Does mental illness lead to owning a cat, though?

Being a crack dealer seems to lead to owning a pit bull, so why not?

Given the above, I'm proud to be a cat person. We must be nuts... why else would we put up with an egotistical, narcissistic, impatient, violent, snobby creature in our homes?

Better to have such a creature in my home than in the White House.

Comment Misty Water-Colored Memories... Slashdot Oldtimers (Score 1) 86

Great printer, those old Panasonics. Fast, clean, quiet, durable. Also loved the Epson MX-80 and the Okidata ML320.

I had a DEC LA-36 teletype (nb. not a TeleType) attached to my TI-99/4A back in the day... its 7 pin printhead lacked true descenders, so the print matched the text on the TI-99/4A's screen!

By the time I got to the Amiga 1000 and 500, I had a hand-me-down HP LaserJet I. What a tank. A Canon photocopier with HP's modifications, and doubled as a great ozone generator. The printer was connected to the Amiga by a 300 or 1200 baud RS-232 link. Annoyingly, I couldn't print anything from the BBSes while I was online - the Amiga's single serial port was needed for the modem. :)

Nowadays, there's a Unix mainframe in my right front pocket. And I can wirelessly print to a Samsung color laser printer that's 10x faster and 1/4 the weight. Don't even get me started on that Chromecast thing that's smaller than a videocassette and faster than a drive to Blockbuster.

But I do miss the quality of the old stuff. The old HP LaserJet just happened to be the very first (shared with the Apple LaserWriter) of its kind. Cost-reduction was not a goal; quality was. And it showed.

I miss HP.

Nice to meet another Slashdot old-timer...

Comment Re:Article is extremely vague (Score 1) 218

To be fair, these are research projects. The things they describe usually work, but may not have all the properties you would need to make a commercially successful battery. For example, the cell voltage; it should be as high as possible, some cell types are below 1 volt, which is really too low. Or it may not have very good current capacity, so you'd need excessively large membranes. Or loads of other things.

This is primary research, they're announcing that they've managed to get excellent stability, via some mechanism; even if this particular cell doesn't tick all the boxes, the same trick might be applied to other cells to give a really good battery.

And while I haven't read this paper, for a paper to be published it nearly always has to reveal what they did in sufficient detail that it could be reproduced.

Comment Re:Why (Score 1) 201

Adiabatic compressed air energy moves the heat from compression into an insulated thermal mass chamber, and uses that to heat the expansion vessel. It recouperates that loss and has 70% total effective energy storage--higher is possible, up to 90%.

The way you describe it sounds not at all like an adiabatic (no heat exchange) process but rather like a thermodynamically irreversible process. Maybe you mean an isothermal process?

And from :
"real compressors and turbines are not isentropic, but instead have an isentropic efficiency of around 85%, with the result that round-trip storage efficiency for adiabatic systems is also considerably less than perfect."

Wikipedia doesn't say so much about isothermal compression in practice, but it sounds to me like practically infeasible to reach your 70-90% roundtrip efficiency. You'd need an enormous thermal mass that doesn't change much in temperature despite 1/3 or so of the energy being stored as heat, you need enormous heat exchangers to transfer the heat with negligible temperature differences, and your compressors and decompressors need to have a very high efficiency.

Comment Re:What bugs me about USB power (Score 1) 152

IMHO: A USB device that depends on its power source to limit its input current, and can be damaged by a host that is willing to deliver more current that it requested, is defective by design.

Current limiting is to protect the supplier of the current. Bad current negotiation can damage the power supply, so of course the power supply should limit the current. A bad power supply may break, though. I think the main problem is that USB-C can use a range of voltages and a 5 V device plugged into a 20 V power supply will blow up the device unless the 20 V supply is signaled to throttle back to 5 V.

But maybe I misunderstand. Unfortunately, the reporting about this topic (Leung's findings) is very fuzzy about what happens exactly. But I don't see any scenario where connecting a good quality 5V, 1A or 2A charger to any USB-C device can lead to damage.

Comment Re:I Stopped Using Custom ROMs (Score 1) 215

"your uncommon hardware may get burned out early (I've lost many wifi / gps / bluetooth / 3g-4g chipsets that way)."

This is the first time I hear smt like this. Do you have evidence?

The gps radio in my nexus 5 (with CM) tends to deteriorate over the months, but it turned out that tightening the screws of the rf shield restores the reception. Not a software issue.

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