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://Techno Now

10/4/2008 - Forgot how to compute the upper dini derivative :/

Dini derivative

f:{\mathbb R} \mapsto {\mathbb R},

denoted by f'_+,\, is defined as

f'_+(t) = \lim_{h\rightarrow 0^+} \sup \frac{f(t + h) - f(t)}{h}.

The lower Dini derivative, f'_-,\, is defined as

f'_-(t) = \lim_{h\rightarrow 0^+} \inf \frac{f(t + h) - f(t)}{h}

(see lim sup and lim inf). If f is defined on a vector space, then the upper Dini derivative at t in the direction d is denoted

f'_+ (t,d) = \lim_{h\rightarrow 0^+} \sup \frac{f(t + hd) - f(t)}{h}.

If f is locally Lipschitz then f'_+\, is finite. If f is differentiable at t, then the Dini derivative at t is the usual derivative at t.

  • Sometimes the notation D^+ f(t)\, is used instead of f'_+(t),\, and D^-f(t)\, is used instead of f'_-(t).\,
  • Like conventional derivatives, Dini derivatives do not always exist.

13/1/2008 - :)))



22/12/2007 - Amazing photos

Photos from space


all photos here.

22/12/2007 - Everex $200 Linux Computer

Everex $200 Linux Computer

Let’s lighten things up with a gadget post. You may have seen that Everex launched a $200 computer that runs Linux. It looks like Wal-Mart sold out of them, but not to worry: more are on the way.

Why should you be interested? Well, instead of Windows, it comes installed with gOS, which is a version of Ubuntu that is customized to work well with web-based tools from Google, Flickr Facebook, and Skype. When I heard that, I had to order one of these PCs to check it out for myself. :)

In this post, I’m just covering the unboxing. I’ll use the PC for a while and let you know what I think in a later post.

First, the box. The “gPC” stands for Green PC, not Google PC as some people have thought:

green PC box

When you open the box, you’ll find a pretty flyer on top of the PC:

green PC box opened

Here’s what the flyer looks like in more detail. For people that have never seen Linux, the flyer is a great little introduction:

green PC box flyer

For $199.00, I was expecting a barebones machine, but it comes with a PS/2 keyboard, mouse, and even USB-powered speakers:

green PC box peripherals

The front of the machine looks like a standard computer. You can see the DVD-ROM drive, speaker and microphone jacks, and two USB ports. There are also two silver buttons for power and reset:

green PC front

The back of the PC is pretty standard:

green PC back

Directly connected to the motherboard, you see four USB connectors and an ethernet port. The expansion card is a modem, but I believe the machine only supports broadband connections, not dial-up.

The machine itself is light but sturdy. I jostled it quite a bit and didn’t hear anything loose or rattling around in the machine. Okay, that’s it for tonight. Tune in later to see what I think of it. :)

22/12/2007 - If someone needs a file (or my tuts)

Posted in esreveR
Just ask me @ my e-mial. Or Here. ;)

22/12/2007 - LOOOL ;)



12/11/2007 - WoW crackme CRACKED! :)

It seems like i have no unsolved crackmes now :/.


Sent: 08. Nov, 22:07

Hi Kostya,

I just uploaded a solution to your Caffeine crackme. Nice work.

Best regards,
- ratsoul

Really GOOOOD work! I thought no one will..

Crackme: http://crackmes.de/users/kostya/keygenm3crypt_caffeine_crackme/
Solution: http://crackmes.de/users/kostya/keygenm3crypt_caffeine_crackme/...

6/11/2007 - Federation Island Sochi (RU)

Federation Island Sochi (RU)


Federation Island is a 330 ha artificial archipelago, located off the coast of Sochi, in the Russian Black Sea. The archipelago offers residences, hotels, cultural, leisure and recreational facilities. Federation Island will be built in the shape of the Russian Federation and reflects the country’s major geographical features. The Russian river network is used as a reference for the island’s waterways; the high mountains inspire the island relief.

Federation Island comprises seven main, more than a dozen private and three breakwater islands. Sandy beaches, dunes, grasslands, bushes, small forests and riverside offer much variety for accommodation ranging from beach residences, luxury villas and apartments to dune, river and cliff houses.

Federation Island is located 15 km from Sochi and the regional Adler airport. City, marina, airport and the skiing resort of Krasnaya Polyana can be easily reached from the archipelago.

The project is being developed by M-Industries of St. Petersburg and designed by Erick van Egeraat in co-operation with Dutch engineering companies Witteveen + Bos and Van Oord Dredging and Marine.

Source page

3/11/2007 - AverMedia AvertTV Hybrid Ultra US - TV-Tuner - external USB



If any one knows where to buy (international orders are accepted).

Product Specifications
Connectivity  
Input Adapter Type TV / video / radio input adapter
Connector Mini DIN 4-pin (F)
Connector Type Audio (Stereo)
Connector Type Composite video
Connector RCAx3
Connector Type S-Video
Video  
Analog Video Signal S-Video
Analog Video Signal Composite video
Contents USB TV tuner, remote control with batteries, USB cable, FM radio antenna, RF connector, Windows MCE IR blaster and receiver, CD, documentation
Ports/Connectors (1) RCA x3 (F)
(1) Mini-DIN 4-pin (F)
(1) FM radio antenna input
Returns Policy This product is subject to our return policy. Please see our complete return policy for details.
System Requirements Intel Pentium 4 2.6GHz with HT (Hyper Threading) or Equivalent AMD processor;

Intel Centrino Mobile 1.8GHz;

512MB RAM or above;

VGA card supports DirectX 9.0c or above;

Sound card;

Windows XP Media Center Edition 2005, Windows Vista Home Premium or Windows Vista Ultimate (32&64 bit); and

At least 200MB hard disk free-space.
Warranty - Labor N/A
Warranty - Parts N/A


20/9/2007 - Unpacking the bundy's keygenme #2

Target: http://crackmes.de/users/bundy/keygenme_2/
Tutorial link: http://download.file2you.net/cjjek9jdutgc/BundyUnpack.zip.html

8/6/2007 - Slimm DVD Burner

Posted in Hardware
In the race to become slimmer and faster, one of the areas where we usually don’t see much improvement or don’t notice it, is with laptop disk drives. Thankfully, Panasonic was able to shave off a few millimeters from the previous record-holding drive which was 9.9mm thick.

7/6/2007 - Lool :)



5/6/2007 - Haaah



Read it in Bloggerjohn blog.

5/6/2007 - Need an extra storage..

Posted in Hardware

Average cost:  64 $

3/6/2007 - They giveaway software for free

The Give away software for free and it is fully leagal!
Shareware free give away offer!

http://www.giveawayoftheday.com/

From the about section:

"Welcome to Giveaway of the day project, the new initiative in the software distribution world! Every day we offer for FREE licensed software you’d have to buy otherwise!

Our new initiative, Giveaway of the day, is finally open to its visitors and ready to present hot software titles and best software authors from all over the world. For game giveaways check out Game Giveaway of the Day.We wish you a Happy Giveaway!"




3/6/2007 - Free file hosting

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3/6/2007 - ASCII Text Generators

Awesome generators for your signature in txt files (e.g. readmes at crackmes.de)

      ___           ___           ___                                     ___     
     /|  |         /\  \         /\__\                                   /\  \    
    |:|  |        /::\  \       /:/ _/_         ___           ___       /::\  \   
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     \/__/         \/__/         \/__/           \/__/         \/__/     \/__/    


TO see how it works click here.

14/5/2007 - Klein bottle (From Wikipedia, the free encyclopedia)

In mathematics, the Klein bottle is a certain non-orientable surface, i.e., a surface (a two-dimensional topological space) with no distinction between the "inside" and "outside" surfaces. The Klein bottle was first described in 1882 by the German mathematician Felix Klein. Other related non-orientable objects are the Möbius strip and the real projective plane. It was originally named the "Klein-Fläche" 'Klein surface'; however, this was incorrectly interpreted as "Klein-Flasche" 'Klein bottle', which ultimately, due to the dominance of the English language in science, led to the adoption of this term in the German language as well.


The Klein bottle immersed in three-dimensional space.

The Klein bottle immersed in three-dimensional space.

Reed more (really interesting)


13/5/2007 - Server is down..

The last project is down, meanwhile i will create a template for website. Dunno what CMS to use.. And have no ideas..


13/5/2007 - Looks stupid, but dunno..

Posted in Private life
I know it looks stupid when I'm trying to call someone @ 12 pm... But sometimes it is so lonely .. Ah..