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Comment: Certainly not first, certainly not 15 minutes, etc (Score 4, Interesting) 106

by olden (#36730738) Attached to: Belgrade Hosts First Public Solar-Powered Cell Charging Station

Saw a similar, amateur setup in the tiny harbor of my hometown, NeuchÃtel, Switzerland, maybe, huh, 10 years ago?
Unfortunately the 8+ different cellphone charging cables provided weren't rugged enough for an outdoor/public setting, and I suspect that frequent damage is what eventually decided the owner to eventually, er, shall I say, pull the plug.

Also, re charging time: common Li-ion takes 2~3h for a full charge, 15 minutes may be a 80-to-90% top-off...

Comment: Re:Ah well. (Score 2) 123

by olden (#36306100) Attached to: A Piece of Internet History Lost: IO.com Sold, Services To Shut Down

My bet would be a company into something like Flash-based SANs, with marketing guys not interested in the original meaning of IO.com but betting that such a catchy domain name will convince people they really care about IOPS, and/or to try and be perceived as the next big player in that field.
We'll see early enough anyway -- too soon I'm sure for everyone using on io.com today, sadly.

Comment: Re:"Ownership of information" is quite clear. (Score 1) 102

by olden (#35448582) Attached to: How Big Data Justifies Mining Your Social Data

...then I'm sure you don't mind sharing your financial details, medical history etc with us, your boss, insurance, etc... It's already electronically available somewhere anyway, right?

(and we're back to the whole "if you have something to hide" debate. I personally side with Schneier on this, privacy is a necessity: http://www.schneier.com/essay-114.html)

Comment: Re:IPv6 Mess -- or is it? (Score 1) 551

by olden (#35109660) Attached to: If You Think You Can Ignore IPv6, Think Again

Sorry, djb's rant is just bs. Was he just venting because he didn't invent IPv6 or something?

Nothing prevents a server from simultaneously serving both v4 and v6 clients. DNS publish both A and AAAA records, clients pick whatever they support.
It's a one-time setup for admins (but yes, too bad, they have to configure those IPv6 addresses somewhere).

Even easier for end users, most won't have to do anything. The "magic box from the ISP" one day answers DHCP (v4), rtsol (v6) and DHCP6 requests, so v6-capable devices (all recent OSes) get v6 connectivity; no change to the v4 part... except more NATing over time probably.

Doesn't look like a particularly painful transition if you ask me.
Granted, it would be better if it didn't require collaboration from ISPs, esp in the US...

Comment: Re:Actually a good reason for it (Score 2) 217

by olden (#35074102) Attached to: Firewalls Make DDoS Attacks Worse

during DDOS-attacks there is just to much state for the firewall to handle.

Sorry, this is wrong for all except maybe the most stupid firewalls out there.

A decent firewall will not only handle a lot more connections (or attempted connections) than any server can, it can also use a range of mitigation strategies should things start to get hairy, such as weeding out states selectively/faster, outright dropping anything unusual or matching any known-bad behavior, falling back to SYN-cookies (which don't require any state to be kept) and only forwarding traffic after completion of the TCP handshake (only allowing connections from non-spoofed addresses), adaptive per-IP/subnet/network rate-limiting, etc...
Heck, firewalls from reputable companies are devices designed to handle and resist attacks, and are tested accordingly. Regardless, while those will weather DDoSs fine, they can't magically prevent your pipe from being saturated either...

TFA completely misses the point too IMHO. Worthless.

Comment: Re:Chemical battery efficiency is quite poor (Score 2) 347

by olden (#34990822) Attached to: How Chrysler's Battery-Less Hybrid Minivan Works

The typical chemical battery used in hybrids have very poor efficiency. ...

Source please? Last I've heard, Nickel-based chemistries (early hybrids such as the Prius use(d?) Ni-MH) achieve 90% charging efficiency if fast-charged (that is, the battery stores 90% of the energy provided to it). And Li-ion's charge efficiency reaches an impressive 99.9%.
While compressed air may have many advantages over modern batteries, charging/discharging efficiency is unlikely to be one of them.

Good day for overcoming obstacles. Try a steeplechase.

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