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* Posts by Marcelo Rodrigues

210 posts • joined 10 Aug 2007

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Battery vendors push ultracapacitor wrappers to give Li-ions more bite

Marcelo Rodrigues

"It increases battery life for those applications that do not use the surge of power functionality ... those that do use a surge of power will of course drain the battery quicker ..."

Yes, but that's not the point. The more we demand from a battery, the more it heats itself.

Think about someone opening a site from the mobile. There will be bursts of power, when the browser process all that HTML and CSS. And there will be quieter periods, when the browser is waiting for data or the user is reading the page.

The busier periods will generate more heat in the battery, as it will deliver more energy per second. With an ultracapacitor the draw is smoothed out, with the battery providing less energy for second, in a longer time frame. This will make the battery usage more efficient, since the heat does not increases linearly with the power draw.

No, it will not help someone playing games. But will help normal usage: spikes for loading a browser, surges from scanning wireless networks and whatnot.

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Boston court confirms Peeping Tom's right to upskirt

Marcelo Rodrigues

"Clearly context is important as well. Someone wearing swim wear (men and women) at the swimming pool probably have an expectation to not be ogled at. However, at the beach, perhaps the situation is different. How does one tell if a man or woman is actively looking for attention or just wants to be left alone?"

You don't have to. Respect is the key. Say you see a beautiful woman at the beach. She is wearing a very small (and provocative) swim wear. Does she want attention? I don't know - but one thing is true:

You can go talk to her. She may go along, or she may not. As long as you are respectful, she will not (or shouldn't) mind.

Now, getting close, taking out the camera and flashing her butt at point blank... that's a no-no. It's all about common sense and respect.

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Frenchman eyes ocean domination with floating, mobile Bond villain lair

Marcelo Rodrigues

Re: Maginot

This is EXACTLY what bothers me. A vessel of this kind would barely follow the waves. This is great with waves of less than... 10 meters? Above this, and the wave will hit the wind turbines.

Well, we can say they are not so critical. How about a 25 meters wave? The thing is 18 meters high - and due to the hull format, will not rise with the wave. Could she stand beeing at 7 meters depth?

And, yes. 25 meters waves ARE far more common than we imagine:

http://www.theregister.co.uk/2004/07/23/waves_space/

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NYPD dons Google tech specs: Part man. Part machine. All Glasshole

Marcelo Rodrigues
Headmaster

Re: Haha, why not Robocop?

"Cops shouldn't be comparing themselves to Terminator, who was, himself, a criminal."

Wouldn't it be a combatant? Else, a machine - and machines cannot be condemned.

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Altcoins will DESTROY the IT industry and spawn an infosec NIGHTMARE

Marcelo Rodrigues

"So while ASICs are now being created for LTC, graphics cards will stay relevant for other altcoins. "

Not quite. The others altcoins (well, most of them) use Scrypt, just like Litecoin. The specialized Litecoin hardware would be quite happy to mine others Scrypt based coins.

In fact, they are MORE profitable than Litecoin. They may be unstable, they will probably die on the long run. But it doesn't matter, as we mine and sell them at once.

The site called "coinwarz" has a comparative between various altcoins, with profitability included.

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Marcelo Rodrigues

Re: All that effort

"Instead of mining, crack the passwords that protect coins already mined."

There are none. Well, not in the blockchain. The blockchain is made of transaction after transaction, in such a way that the later validates the previous. One could try to break this - but he would need MORE hashpower than the rest of the network combined.

At he moment the hashrate of the Litecoin network is =~ 68,9 gigahashes. To put it in perspective: a Radeon 7970 has about 750 kilohashes of processing power. To succeed at a 51% atack, one would have to get 51% of the processing power of the ENTIRE network. That means his own machines count too.

68,9 gigahashes are about 91258 Radeons 7970. Add enough boards that this one person would have 51% of ALL. It is feasible, but hardly lucrative. Especially since the heist wouldn't go unnoticed, and either the coin would crash or the problem solved.

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Facebook will LOSE 80% of its users by 2017 – epidemiological study

Marcelo Rodrigues

42 is the magic number

-> I ain't Spartacus

I would upvote you - but the counter is at 42! I can't bring myself to mess with this! :D

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4K-ing hell! Will your shiny new Ultra HD TV actually display HD telly?

Marcelo Rodrigues

Re: I don't give a **** about the TVs

Tell me about it. I could live with 1920, but 1080 is quite small. 1200 would be a world better.

Of course, 2560 on my monitor is better, even so 4k.

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US Department of Justice details Kim Dotcom evidence

Marcelo Rodrigues

Re: let me be the first to say ...

Cthulhu, single handed, got you an up vote. All hail Cthulhu! :D

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Krakoom! OCZ flies into the ground. Time to salvage the engines and look around

Marcelo Rodrigues

At least two

Agility 3 - 60 GiB.

Working like a charm. I must be the lucky one... Or the earlier series were bad.

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Bitcoin mining rig firm claims $3m revenue in just FOUR DAYS

Marcelo Rodrigues

Some of them mine too!

See this link. It's a datacenter BUILT to mine bitcoins. Built by AsicMiner - who make and sell mining hardware.

http://hongwrong.com/hong-kong-bitcoin/

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Bitcopocalypse! Top crypto-currency can be HIJACKED, warn boffins

Marcelo Rodrigues

Re: Electricity is free is you steal it

I am not quite sure about it. The difficulty is so great that specialized hardware is used. The smaller of them does 5 Gh (giga hashes)/s. Is uses about 10W, and is a small cube. And people use this (and its big brothers, going up to 500 Gh/s miner - the size of a big tower home PC. It is against this that a bot network would go against.

To add a little perspective: a Core i7 3930k is quoted as going as high as 66.6 Mh (mega hashes)/s. A dedicated machine, fine tuned to do mining, and doing nothing else.

Sure, 10k slave machines would do some good. But what are the odds of the infection going unnoticed, when it is gobbling 100% of the CPU power, turning the computer in a home heater?

It is not that isn't feasible. It's just that I believe is more profitable to send spam and another nasties.

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Wanna sell a phone in New York? Better have a receipt

Marcelo Rodrigues

Re: Is it really that hard to ID a phone?

"... (or of the blacklists have to be synchronised, otherwise a stolen mobile could still slip on to the network)..."

Sure it is not so hard? There is no need to be real time sync: once a day would be good enough.

Every 3 hours shouldn't be hard: how many mobiles are stolen per hour - wolrdwide? 10k? 30k? Even 100k entries would be easy to syn once a day. Hell, Usenet lift a very heavier load in terms of messages/second - and has been doing it for years.

Remember: There is only need to sync the IMEI, the operator's code, the country and the time of block. What all this would amount to? 512 bytes/mobile?

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iPhone 5S autopsy shows WHY it can't tell which end is up – dev

Marcelo Rodrigues

It's obvious, isn't it?

"One way or another, the days when an iPhone doesn't know which way is up are probably drawing to a close."

It's up yours!

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Alarming tales: What goes on INSIDE Reg hack's hi-tech bedroom

Marcelo Rodrigues

Re: why not try

"As for putting the phone in aeroplane mode, why not just disable the beeps for tweets, linked-ins and emails. Admittedly that doesn't save you from being woken by text, but then I don't tend to get early morning texts."

Sony mobiles have an app, called "Smart Connect", that allows You to choose actions to be performed when something happens.

Mine goes to silent mode, if a charger is plugged, between 23:00 and 7:00.

I believe Samsung has something on this lines too...

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Panasonic throws in towel on plasma tellies, preps for BILLION-dollar kick in pants

Marcelo Rodrigues

"

The DNLA software on my Viera is pretty much flawless.

(Plays everything from anything if there is a problem it is never the TV)."

Mine has its quirks - some settings not supported - but works fairly well. I'm used to stream FullHD, and works without a glitch.

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Marcelo Rodrigues

"Actually I would say the extra size and weight would be the biggest con for most people. "

My 42" plasma has a depth of about 3 centimeters. I believe the LCD are in the range of 2, aren't they? Hardly important, as a few years back people were buying LCD to hang on the walls due to its thinness - 4 or 5 centimeters at the time.

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Marcelo Rodrigues

"However, this isn't really news as Panasonic announced a while back it was getting out of plasma and has recently been heavily involved in the move to printing OLED screens."

I do hope they sort the OLED in time for my next TV. In about... 10 years? My Viera is new, and rock solid. Will change when it dies.

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Marcelo Rodrigues

Re: Tough as old boots

Count me in. In my second Viera plasma TV. I'd buy a third without blinking.

Beautiful colors, great blacks, and excellent image all around. Sad to see, again, another case of a VHS trumping a betamax.

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Techies with Asperger's? Yes, we are a little different...

Marcelo Rodrigues
Devil

Re: Noise pollution

"I far prefer to be in a quieter environment and with fewer people talking at once so that I can actually make out what is being said."

I know what You say. There are times I want to walk around the pub - clubbing people into silence. :P

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Thorium and inefficient solar power? That's good enough for me

Marcelo Rodrigues

Re: I think you'll find...

"So called because dogs keep licking them, so they must be good."

Upvoted just for the explanation. I have always wondered why the "dog' s bollocks" would be a good thing... :D

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Valve shows Linux love with SteamOS for gamers

Marcelo Rodrigues

Re: orly

They do port them allright. I play on Linux, and the games work flawlessly. Even Left 4 Dead 2 - still beta - is running very well.

Natural Selection is, as far as I know, perfect. As Team Fortress 2 and many others.

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New ransomware strain forces hapless users into becoming Bitcoin miners

Marcelo Rodrigues

"Locking the users out when the system is infected seems counter-productive, since they'll have to get it fixed. If the process just sat in the background taking maybe 10% of CPU, it could run for years unnoticed. 100,000 PCs all dedicating 10% of their capacity to mining bitcoins could contribute a lot of cycles..."

Yes, the same question occurred me. But wouldn' t be better to use 100% of CPU?GPU, and drop the priority all the way down? This way the malware would stand a much better chance of getting by unnoticed.

At least on desktops - where there is no battery to run flat in about... five minutes?

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London Underground cleaners to refuse fingerprint clock-on

Marcelo Rodrigues

Re: Its kind of pointless really

"The typical false negative rate is around 5% for these devices, where you are comparing a scan against a single specific finger print (the best case scenario), so on a typical day, they will have 15 people unable to sign in anyway..."

We use fingerprint based clock where I work. Yes, sometimes it doesn't recognize my print. Then, I put my finger AGAIN against the sensor. Costs me about 5 seconds more. boo hoo, the shame...

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Headmaster calls cops, tries to dash pupil's uni dreams - over a BLOG

Marcelo Rodrigues

Re: Truth or consequences

"Mine is, "It you're bullied, hit them back and hit them hard"."

Hard, and where it hurts.

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OK, forget the 3D telly fiasco: 4K is gonna blow you away - say tech giants

Marcelo Rodrigues

Re: 4K TVs need 4K content

"You may not want to junk your current set, but if you're in the market to buy a new tv... You will want to future proof it."

No doubt about it - but there is a pesky thing called ROI. Think about it: Today a 4k TV costs... 5 thousand? How much a Full HD TV costs today? I'm brazilian, so I don't know the price for You. But, for the sake of argument, let's say 1 thousand.

Question: When my FullHD get obsolete, will the 4k of the time be more than 1 thousand cheaper than the 4k of today? If the answer is "yes" or "it will cost exactly one thousand less", then it is better ROI to buy a FullHD today, and buy another one when the time comes.

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Behind the candelabra: Power cut sends Britain’s boxes back to the '70s

Marcelo Rodrigues
Devil

"But the pleasure will be spoiled when part way through the interesting stuff, every flaming light flashes on, and the whole house starts bleeping, groaning and wheezing."

I could give a fuck for beeps and... Oh, wait.

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Boffin snatches control of colleague's BODY with remote control BRAIN HAT

Marcelo Rodrigues
Devil

Re: ssh person@kitchen

sudo make me a sandwich

error: could not find "ham_lib.so.2". Missing dependency.

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Do you think spinning rust eats flash's dust? Join the hard drive daddies club

Marcelo Rodrigues
Boffin

Re: SSD are not reliable enough yet!

"One moment they're AOK, the next monent they're done for. They wear out and die - the more that is written to them, the faster they wear."

Well, bad luck DOES exist. Apart that, You will find that SSDs inform You about the wear of the cells. Consider this SMART output (from an OCZ Agility 3, 120 GB). Only the relevant part is showed.

177 Wear_Range_Delta 0x0000 000 000 000 Old_age Offline - 3

230 Life_Curve_Status 0x0013 100 100 000 Pre-fail Always - 100

231 SSD_Life_Left 0x0013 075 075 010 Pre-fail Always - 0

241 Lifetime_Writes_GiB 0x0032 000 000 000 Old_age Always - 100712

242 Lifetime_Reads_GiB 0x0032 000 000 000 Old_age Always - 571

As You can see, it reports the life left on the devide (231 SSD_Life_Left).

Yes, it does not help with defects, but is good enough so we can replace a drive BEFORE it goes "read only".

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Samsung faces Brazilian rap: Factory bods work '15hrs without break'

Marcelo Rodrigues
Stop

Re: You've got to be doing pretty badly...

"...to get in trouble breaking South American employment laws."

I don't know where You are from, but I'm Brazilian. I can tell You that our employment laws are far from abusive. In fact, there are people that calls them too protective to the employee. I will not discuss if this is accurate or not - but from the top of my head:

1) The standard work journey is of 8 hours, with one break hour in the middle to eat/rest.

2) There are limits to extra hours (2 each day).

3) The week work limit is 44 hours (monday to saturday).

And this is the tip of the iceberg. Mind You, I am not a lawyer.

I can't speak for the rest of Latin America, though.

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Chubby-chasing SEX TROLLS ran me offline, says fashion blogger

Marcelo Rodrigues
Flame

Re: So why don't men run into as many assholes as women?

" Ask any woman who has just been groped on the Tube, or been propositioned and when the delightful advances have been rebuffed called vile names whether they have heard of men getting the same treatment and we'll say no."

I say "yes". I have been called "fag", "cock sucker", asked if I were impotent and so on. Just because, guess what, I rebuffed female (I'm male) advances online. And the insults were dished out by the female.

I don't know about the proportion, but to say women are saints...

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CONFIRMED: Driverless cars to hit actual British roads by end of year

Marcelo Rodrigues
Happy

Re: All at once or none at all

"For example, would an automated car be able to react well to a low-to-ground obstacle suddenly falling off the back of a truck? What about a child suddenly running out in front from between two cars (thus practically invisible beforehand)? Can the car detect small but significant patches of black ice? How will it react to an accident suddenly starting in front of them? And so on?"

Well, an autonomous car is not perfect - but so aren't we!

I'm not sure about the hypothetical box hitting the road, but would bet that the car would "see" it. Simple because it must knows where the sidewalk ends - and to that it must "see" things close to ground.

The child would be, at least, treated as another obstacle. The first priority (or one of them) is not hit things. So, the car would break/swerve in order to avoid the child. If it would be successful is another argument. But i'd risk saying the child odds would be better with a computer driving the car. Simple because it doesn't panic.

About the black ice... no idea.

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JPL wants to fire a laser at MARS!

Marcelo Rodrigues

Turn off the shields!

They know about the lasers! Butlers serve unto no one!

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US Navy robot stealth fighter in first unmanned carrier landings

Marcelo Rodrigues
Devil

Re: Still not fully baked, but interesting.

"I also agree that a UCLASS can certainly outmaneuver a man-driven aircraft given that it can be made both stealthy and extremely agile. You see the problem with stealthy flying wings is that they don't handle high alphas well or rapid directional changes well. If they did then they wouldn't be stealthy. Ever see a B-2 perform an aileron roll, a loop? Remember that Boeing 367 was rolled on an early flight to prove it was good enough, but no one is doing that with one of these stealthy robots . . . yet. Think about such a wing-based aircraft dealing with a dogfight situation with multiple bogies and missiles flying all over the place. Just try programming that!"

I tought that F-22s and F-35s were quite agile. Aren't they? The B-2 is, indeed, more a flying beetle than anything else - but it is outdated technology. Their newer brothers are much better.

About the dogfight... in my opinion they would be MUCH better than humans. Not today, not tomorrow. But give it a few years of research and development...

A computer doesn't get nervous. It doesn't get distracted, and it have no problem prioritizing threats. It can, even, decide that self-sacrifice would be a good idea in a no-winning scenario. All it would have to do is avoid enemy fire long enough to do a kamikaze on target.

Like this: (in pseudo code)

"enemy fire detected. -> 5 missiles incomming. -> 3 enemy fighters and an enemy bomber (my target). -> evasion deemed impossible, no escape solution. -> alternate solution: evade long enough to explode/hit the target. -> EXECUTE."

The bigger problem isn't the capability/feasibility - it is just that people are afraid of let the control go.

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OFFICIAL: Humans will only tolerate robots as helpful SLAVES

Marcelo Rodrigues
Happy

Re: re: 'once they look sufficiently human.'

Good old Assimov been there already.

1) A robot may not injure a human being or, through inaction, allow a human being to come to harm.

2) A robot must obey the orders given to it by human beings, except where such orders would conflict with the First Law.

3) A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.

As for rights... well, they had none.

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The future of cinema and TV: It’s game over for the hi-res hype

Marcelo Rodrigues
Devil

Re: Good article, but does the punter care?

"People go for the numbers, and don't even know how to appraise the quality!"

Up to a point, yes. No doubt people will buy the TV with most "X" (whatever it is). But they can see the difference alright: I have seen the reactions.

I have a plasma Panasonic, 42". It isn't the best of all (of course), but it is fairly good. And is better than most, here in Brazil. One thing I always hear is "your TV has a much better image than mine!". From people who knows nothing about it - just watching something random.

So, yes. People will buy numbers and marketing - but (sadly) then can see the difference when rubbed on their noses. But, by then, will be too late: they will already have bought into the drivel.

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Relax, Hollywood, ARM's got your back: New chip 'thwarts' video pirates

Marcelo Rodrigues
Boffin

"The last thing I want to do is get off the sofa and fiddle plugging my phone in with a cable! And then I either need a long cable trailing the living room, or have to get up everytime to change the video or volume! And what if I want to use my phone whilst I'm watching TV?"

You don't have to. HDMI provides this functionality, built in the standard. Panasonic calls it "Viera Link". Sony says it is "BRAVIA Link" or "BRAVIA Sync" - and so on. I used it with my Sony mobile and Panasonic TV. I could play/pause and stop. Didn't check much more, but...

(I)Relevant link:

http://en.wikipedia.org/wiki/Hdmi#CEC

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Marcelo Rodrigues
Boffin

"...Smart TVs => dying species."

I'm not sure about it. The reasoning is sound, but...

Wouldn't it means smart TVs with more processor/memory? All in all, smart TVs are more expensive - hence, more profitable.

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Finally – mind-controlled limbs without brain surgery

Marcelo Rodrigues
Happy

Re: 'tis an ill wind

I believe he is using another set of nerves to control the movement. So he is like a baby - still learning how to move his arm.

But is extremely cool! To think about all the people that will have a new life out of this tech...

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Review: Sony Xperia SP

Marcelo Rodrigues
WTF?

Re: Battery

"My HTC phone is on its fourth, maybe fifth, battery. OK, it's three years old. Maybe batteries have improved in that time, but I don't suppose they've become immortal."

What do you do with your batteries? I have a Nokia E66, and its (first) battery is still good. My "old" Xperia Arc is dead (corrosion), but its (18 month and first) battery was just fine. No noticeable drop on capacity whatsoever.

My girlfriend’s Galaxy S2 (about 18 months too, and first battery) works just fine.

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Marcelo Rodrigues
Linux

Re: @johnnytruant

Probably O2. The Xperia SP is listed as unlockable (does this word exists?).

Here the link:

http://unlockbootloader.sonymobile.com/supported-devices

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What freetard are you: Justified, transgressor or just honest?

Marcelo Rodrigues
Joke

Re: Concert spending

No! No! Never! Since is a "rational decision", "freetard" will be, henceforth, known as "freesmart"!

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Why are scribes crying just 'cos Google copied their books? asks judge

Marcelo Rodrigues

Re: Seems counterproductive...

I remember this. But, at the time, I got the idea they were doing it WITH the consent of the authors - or with books on public domain. Is it not the case?

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Marcelo Rodrigues
Facepalm

Re: Seems counterproductive...

Well, they are complaining about Google. Is there another presence of Google than the Internet one?

Where would Google show a book (whole or part of) that wouldn't be the web?

Well, there's Android. But last time i checked it wasn't showing books others than returned by a Google search...

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Marcelo Rodrigues
Boffin

Re: Seems counterproductive...

robots.txt is your friend.

Last time I checked, Google's crawler honored this little bugger.

Don't want your book indexed? Fine, restrict it with robots.txt.

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Deep inside Intel's new ARM killer: Silvermont

Marcelo Rodrigues
Devil

Re: 3x performance

Well, I can't say if his numbers are right - but I agree with the feeling.

You see, it's marketing. You (marketing guy) are paid to make the product look good. How do You do it?

1) Take an average measure of your opponent.

2) Craft a test where Your product excels

3) Compare them.

It's not just Intel that does it. All business are guilty of this kind of thing. If it was reverse - and were a press release from ARM - I would think the same thing. Just reversed.

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Don't use Google+? Tough, Google Glass will inject it INTO YOUR EYES

Marcelo Rodrigues
Happy

But there ARE uses for this!

This one isn't pretty - but it's a prototype.

Even ugly as it is now, I can think of one general use to it: using augmented reality to help in some jobs. Think a warehouse, with 2D barcodes on the creates. The glass could overlay significant information to the worker.

Another (more controversial) use would be to sales people. A customer gets in. The glass does a facial recognition, and brings up the client's preferences/order. I know, I know. There are a lot of people who wouldn't want/like/accept this. I'm just showing practical uses to the tech.

If we stop and think a little, there ARE professional activities wich could be enhanced by this.

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Scramjet X-51 finally goes to HYPER SPEED above Pacific

Marcelo Rodrigues
Pint

Re: "It was hoped that the X-51A would break Mach 6"

True, it could have got past MACH6. But if it had, they would advertize it as "greater than MACH6". By the same logic, it could have got faster than MACH 10 (it IS faster than MACH5). But they would say it, don't You think?

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Western Digital profits down despite revenue rise

Marcelo Rodrigues
Happy

Re: Failure

Is it really this bad? I have been using Seagates on the desktops (about 20 of them, with a service life of 3 years) for the last... six years, I'd say. I believe ONE of them failed me - and was a SMART alert, not a suddenly dead disk.

Maybe I'm lucky... :D

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Notebook makers turn to Android in face of Windows woes

Marcelo Rodrigues
Pint

Re: Good news

"You must have missed the last paragraph of the article. Microsoft will take their pound of flesh, whether by 'innovating' or by lawyers."

Up to a point, no? Think about it. If (and only if) the OEMs are going to sell something without Windows installed, is only a matter of time before they start selling something WITHOUT an OS installed! Microsoft is stalling this, saying it is all about piracy - but we know that is not true.

Google OS is Linux. Well, Linux kernel, and (to my argument) all that matters. Why? Because the drivers (sorry, modules) come WITH the kernel! A hardware that runs a Google OS will, probably, run on a standard distro!

A dream coming true... :D

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