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29.01.2007.

Silica aerogel - silikatni aerogel - izolator buducnosti
Lokacija: Zanimljivi linkovi :: SciTech   |   Autor: cacan @ 23:19   |  

Aerogel - izolator buducnosti… Wiredov clanak o aerogelu

Wikipedia - Aerogel

A 2.5 kg brick is supported by a piece of aerogel weighing only 2.38 grams.
Aerogel is a low-density solid-state material derived from gel in which the liquid component of the gel has been replaced with gas. The result is an extremely low density solid with several remarkable properties, most notably its effectiveness as an insulator. It is nicknamed frozen smoke, solid smoke or blue smoke due to its semi-transparent nature and the way light scatters in the material; however, it feels like extruded polystyrene to the touch.

Osim u upotrebi kao odlicni toplinski i zvucni izolatori, moci ce posluziti i kao odlicna skladista energije

Aerogels are solid substances similar to gels but where the internal liquid is replaced with air. Aerogels rank among the world’s lowest density solids. They are very porous and light, and have remarkably high internal surface area. Their microstructure and physical properties can be manipulated at the nanometer scale by selection of raw material and modification of manufacturing conditions. Aerogel products can be engineered to exhibit desired thermal, acoustic, mechanical and/or chemical properties. Aerogel materials can be produced as monoliths, thin-films, powders, or micro-spheres to respond to given application requirements.

The extremely high electrochemical surface area of ACI’s ENERGel™ carbon aerogel enables very high rates of charge and discharge. Capacitances of more than 104 F/g and energy densities of more than 325 kJ/kg have been demonstrated with carbon aerogels ultracapacitors. Additionally, power densities of up to 20 kW/kg have been achieved. This is orders of magnitude higher than what conventional capacitors offer. ACI believes that its ENERGel™ carbon aerogel is a superior option for applications such as specialized electrodes.

Slika i tekst najbolje opisuju svojstva toplinske izolacije silikatnog aerogela… “…silica aerogel can protect the human hand from the heat of a blowtorch at point blank range….

Plamen-Aerogel-Sibice



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    27.01.2007.

    Free Content, Free Software, Free Hosting
    Lokacija: WebDev :: Hosting   |   Autor: cacan @ 0:19   |  

    Free Content, Free Software, Free Hosting

    eWeek reports that Wikipedia founder Jimmy Wales wants to facilitate the dissemination of free content by offering free software, free storage and free bandwidth.

    Free usually means ad supported - but not in this case. Wales says his customers will be able to keep any advertising revenue their content generates. The new service will be called OpenServing.

    Wikia, the commercial counterpart of the non-profit Wikipedia, recently received an undisclosed amount of funding from Amazon.com. When asked whether Amazon will supply web services for Wikia or OpenServing, Wales said potentially - but hosting wasn’t a part of the investment deal.

    MediaWiki will be the first free app available from OpenServing. WordPress and Drupal may follow, along with “hundreds of other software packages". Users will even have a single sign-on across all services.

    Many hosting providers dismiss Google Apps for Domains and Microsoft’s Office Live as proprietary platforms with limited functionality. Their customers want the flexibility to install whatever open source software they choose. In which case, might OpenServing’s mission of creating a free software clearinghouse atop a free hosting platform represent a threat to traditional web hosting?




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  • Download free books online
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    26.01.2007.

    Software as a Service - SaaS
    Lokacija: Software   |   Autor: cacan @ 0:26   |  

    Nicholas Carr: SaaS adoption set to explode

    Hmmmm… koliko god netko misli da ce mu to srezati troskove i kako je to divna stvar, treba znati da je malo rjesenja dovoljno fleksibilno za brze prilagodbe kretanjima trzista ili potrebama optimizacije poslovnih procesa… jako je lose kad top manageri odluke donose ne razmatrajuci sve parametre… jos je losije kad se takve odluke pravdaju losim softwareom - istim onim kojeg su sami izabrali…;-)

    Kako god, arhitektima i developerima bi to trebao biti pokazatelj kako razvijati rjesenja, odnosno kako kasnije imati manje glavobolja kad svi prsti i sva krivica budu bili upuceni na njih…;-)

    Large companies appear to be jumping en masse onto the software-as-a-service bandwagon, according to a new survey of CIOs by management consultants McKinsey & Company. The survey found that 61% of North American companies with sales over $1 billion plan to adopt one or more SaaS applications over the next year, a dramatic increase from the 38% who were planning to install SaaS apps in 2005.

    Nicholas Carr: SaaS adoption set to explode




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    25.01.2007.

    Gliffy.com - diagram, flowchart, netword diagram online maker
    Lokacija: Software   |   Autor: cacan @ 17:02   |  

    Gliffy.com - zgodan online flowcharter…. skoro kao Visio… ok, ok… zato i stoji ono “skoro"… ;-)

    Gliffy.com - diagram, flowchart

    Gliffy is easy, free, and fun!

    Diagramming in your web browser without downloading additional software
    Desktop application feel in a web-based diagramming solution
    Add collaborators to your work and watch it grow
    Link to published Gliffy drawings from your blog or wiki
    Create many types of diagrams such as Flowcharts, UI wireframes, Floor plans, Network diagrams, UML diagrams, or any other simple drawing or diagram



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  • FontStruct - online font maker
  • Online testovi - testiranje
  • Neodelight.com - online Flash games - flash igre - igrice
  • FORMs usability
  • meebo.com - web instant messaging - ajax
  • Music - mp3 - audio crawler
  • Color schemes - web colors






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    24.01.2007.

    BitTorrent Tutorial Roundup - Help - Manual
    Lokacija: P2P   |   Autor: cacan @ 7:56   |  

    Par linkova za BitTorrent pomoc i odgovori na najcesce postavljana pitanja… ;-)

    Here’s a roundup of some of the BitTorrent related tutorials we wrote this year. Twelve tutorials in total, so there will probably be something interesting for everyone.

    The Basics
    1. How to Make a Torrent
    Torrents are great, they are the best way to share large files with your friends, or even with people you don’t know at […]

    Here’s a roundup of some of the BitTorrent related tutorials we wrote this year. Twelve tutorials in total, so there will probably be something interesting for everyone.

    # The Basics

    1. How to Make a Torrent
    Torrents are great, they are the best way to share large files with your friends, or even with people you don’t know at all. But surprisingly enough, not many people create torrents when they need to share something.

    2. How to find Torrents
    10 Great Torrent Sites + Firefox Search Plugins.

    3. How To Encrypt BitTorrent Traffic
    More and more ISP’s are limiting and throttling BitTorrent traffic on their networks. By throttling BitTorrent traffic the speed of BitTorrent downloads decreases, and high speed downloads are out of the question.
    # Speed Up Your BitTorrent Downloads

    4. How to Optimize Your BitTorrent Download Speed
    BitTorrent can be fun, as long as you get decent speeds. Not satisfied with your current speeds? These suggestions might help yo optimize your download pleasure.

    5. How to Speed Up Bitcomet and uTorrent
    90% off all people use the default settings on their client, and that’s a problem.

    6. How to Protect Your Torrent From Failing Trackers
    Nothing is more frustrating than your download getting stuck. The fact that a torrent has stopped downloading can have several reasons.
    # BitTorrent and RSS

    7. How to Use RSS & BitTorrent to Download TV shows
    Are you tired of scanning several BitTorrent sites for the latest episodes of your favorite TV show? You should definitely try using RSS feeds then. RSS and BitTorrent are a perfect match.

    8. How to Make a Custom TV Torrent Feed
    How to create a personalized TV torrent feed, and have all your favorite TV torrents in one feed.

    9. How to Use Gmail to Search Torrents
    Gmail is more than a useful email service. In just a few steps you can turn it into your personal torrent search engine. And by using labels and filters you can keep your inbox clean.
    # uTorrent Tips and Tricks

    10. How to Run uTorrent on a USB Stick
    A portable version of uTorrent may come in handy when you’re with friends, at school, or at work. It will fit perfectly on every usb-stick, iPod, mobile phone, or any other device that is recognized a “removable disk”.

    11. How to Run uTorrent in Mac OS X
    uTorrent is currently only available for Windows. But that doesn’t going to stop us from running it in OS X.

    12. How to Use Firefox to Remotely Control uTorrent
    The uTorrent WebUI can be used to access uTorrent from an external computer. This Firefox extension will make it even easier.

    Have fun!




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    23.01.2007.

    50 Beautiful CSS-Based Web-Designs in 2006
    Lokacija: WebDev :: CSS :: Zanimljivi linkovi   |   Autor: cacan @ 7:55   |  

    50 Beautiful CSS-Based Web-Designs in 2006

    2006 was rich on creative, beautiful and unusual design concepts. We’ve seen a lot of whitespace, many examples of readable and usable text-design, badges, stars, rounded corners, shapes, gradients, mirror and 3D-effects - just name it. Let’s take a close look at some of the most beautiful designs we’ve seen in 2006. Some gorgeous designs are missing? Let us know - comment on this article!



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  • Music - mp3 - audio crawler






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    Cheap Web Hosting
    Lokacija: WebDev :: Hosting   |   Autor: cacan @ 0:19   |  

    Kako pronaci jeftin i kvalitetan hosting? hmmm…

    Finding a needle in a host stack

    How can you avoid the lurch and successfully land the right low-cost host your first time out? First, figure out exactly what you want your site to be, both now and in the future. Today, you may just want a simple site for your blog. In a year or two, as people flock to your site to read your brilliant observations, you might need to handle a lot more traffic. Or you might decide to sell T-shirts with your likeness on them, and you’ll need some e-commerce tools. In any case, you need to think it through.

    When you have a good idea of what you need from a host, it’s time to hit the Web and start doing your homework. While you’re at it, be sure to follow these simple rules: continue->




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    Best Free Web Hosting
    Lokacija: Zanimljivi linkovi :: Hosting   |   Autor: cacan @ 0:15   |  

    Clanak o tome kako izabrati dobar free web hosting… hm, zar nije to izumrlo? ;-)

    Free Web Page Hosts with No Banner Ads?

    Looking for free web site hosting with no annoying pop-ups, pop-unders, buttons, banners, headers or footers? And as well as this, you’d like 99.8 percent up-time, fast servers, access to the cgi-bin for scripts, FP extensions, PHP and MySQL databases and FTP access?

    We went out searching for the best “no ads” totally free site hosting space deals around. The results: disappointing, they are very few and far between. Many have come and gone, or as in the case of Bizland, quite suddenly withdrawn their free service and demanded that all their customers begin paying. We took a look at the promotional information for over 300 free web hosting companies, but then also looked at customer reviews. There was usually a major difference in opinions.

    There is still a plethora of free web hosts around, but most require that you carry their advertising or offer you a limited time for the free service, usually a year. On the up side of this, many of these companies do supply quality hosting with many services in exchange for having their banners served up on your pages. We did find that many of the non-banner supported free options were hosted on very slow servers. In a number of cases, the server failed to respond at all! continue ->




    Vezani blogovi:
  • Free Content, Free Software, Free Hosting
  • Wikifortio - file hosting - upload-download
  • Free file upload - download hosting list
  • Best Web Hosting
  • Free file upload sites (upload - download)
  • Apache - config - virtual hosting
  • Cheap Web Hosting






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    22.01.2007.

    Best Web Hosting
    Lokacija: WebDev :: Hosting   |   Autor: cacan @ 23:59   |  

    Who has The Best web hosting in the world?

    http://www.thewhir.com/blogs/Isabel-Wang/index.cfm/2007/1/22/Hosting-Tomorrows-MySpace

    Robert Cringely says Google is on its way to become the biggest CDN ever. It controls more network fiber than any other company in the world - and it’s building two huge data centers in South Carolina alone. Google’s enormous capacity, coupled with end users’ increasingly voracious appetite for all things web-based, will lead to a future in which Google will act as a giant proxy server for the Internet. It will be “our phone company, our cable company, our stereo system and our digital video recorder"…

    Greg Linden disagrees. He thinks that instead of cornering the market on bandwidth, Google is trying to build a world of infinite storage and CPU power. Well, *and* bandwidth.

    No web hosting provider will have access to Google’s economy of scale. Or out-of-this-world local government incentives. (Unless you’re a state-licensed operator in China, but that’s a different story.) Sorry, there isn’t and won’t be any way around this. BUT one resource that Google won’t be dishing out in buckets is… knowledge. continue… ->




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    Web Design is 95% Typography
    Lokacija: WebDev :: ArtLibraries :: Fonts   |   Autor: cacan @ 15:52   |  

    Web Design is 95% Typography

    95% of the information on the web is written language. It is only logical to say that a web designer should get good training in the main discipline of shaping written information, in other words: Typography.



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    21.01.2007.

    The A-List-Apart Primer Part Two: Resources For Beginners
    Lokacija: WebDev :: CSS :: HTML   |   Autor: cacan @ 15:51   |  

    The ALA Primer Part Two: Resources For Beginners

    A List Apart publishes articles written for working web professionals, but we appreciate the predicament of new web designers and builders who aren’t sure where to begin. As we promised in our primer for readers new to ALA, we’ve collected a set of starting points for the next generation of people who make websites



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    19.01.2007.

    Very Short Stories - 6 words science fiction
    Lokacija: Zanimljivi linkovi   |   Autor: cacan @ 15:49   |  

    Very Short Stories - 6 words science fiction: 33 writers. 5 designers. 6-word science fiction.

    We’ll be brief: Hemingway once wrote a story in just six words ("For sale: baby shoes, never worn.") and is said to have called it his best work. So we asked sci-fi, fantasy, and horror writers from the realms of books, TV, movies, and games to take a shot themselves.

    Dozens of our favorite auteurs put their words to paper, and five master graphic designers took them to the drawing board. Sure, Arthur C. Clarke refused to trim his ("God said, ‘Cancel Program GENESIS.’ The universe ceased to exist."), but the rest are concise masterpieces.




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    18.01.2007.

    Canon 420EX Speedlite flash - savjeti
    Lokacija: DigitalPhoto   |   Autor: cacan @ 22:16   |  

    Canon 420EX Speedlite flash - savjeti




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    17.01.2007.

    Fot-o-grafiti - odlicni tutoriali za fotografiranje
    Lokacija: Zanimljivi linkovi :: DigitalPhoto   |   Autor: cacan @ 22:17   |  

    Odlicni, ali zaista odlicni tutoriali za pocetnike u fotografiranju…

    Fot-o-grafiti.hr tutoriali

    Nauči:

    * Svjetlo i rasvjetu: Modifikacija rasvjete - usmjerivači (07.01.2007.)
    * Estetiku fotografije: Koliko fotografirati? (07.01.2007.)
    * Svjetlo i rasvjetu: Dodaci za podešavanje rasvjete (02.01.2007.)
    * Svjetlo i rasvjetu: Vrste umjetne rasvjete (02.01.2007.)
    * Digi osnove: Pixel pitch i Fill factor (28.12.2006.)
    * Digi osnove: Piksel (27.12.2006.)
    * Digi osnove: Slikovno osjetilo (27.12.2006.)
    * Digi osnove: Što znači digitalno? (27.12.2006.)
    * Digi osnove: Alias (23.12.2006.)
    * Digi osnove: Ekvivalentne žarišne duljine (10.12.2006.)
    * Optiku: Podjela objektiva (09.12.2006.)
    * Optiku: Vidni kut i perspektiva (09.12.2006.)
    * Opće osnove: Veličina i žarišna duljina (08.12.2006.)
    * Opće osnove: Udaljenost i veličina (07.12.2006.)
    * Opće osnove: Formati negativa i papira (06.12.2006.)
    * Digitalnu obradu: Korekcija perspektive (04.12.2006.)
    * Optiku: Perspektivno izobličenje (03.12.2006.)
    * Optiku: Izobličenje širokog kuta (03.12.2006.)
    * Opće osnove: Format (03.12.2006.)
    * Ispis: Boje i pigmenti (24.11.2006.)
    * Ispis: Tintni proces ispisa (20.11.2006.)
    * Napredno digitalno: Kvantizacija (16.11.2006.)
    * Digi osnove: Povijest digitalne fotografije (06.11.2006.)
    * Upravljanje bojom: Promjenom boja pokrenite karijeru (06.11.2006.)
    * Napredno digitalno: Tonemapping (03.11.2006.)
    * Opće osnove: Anatomija svjetlomjera (26.10.2006.)
    * Opće osnove: Svjetlomjer (26.10.2006.)
    * Optiku: Razlučivost oka (20.10.2006.)
    * Opće osnove: Kako gledamo (20.10.2006.)
    * Estetiku fotografije: Kompozicija (19.10.2006.)
    * Opće osnove: Oko (16.10.2006.)
    * Opće osnove: Kako vidimo (16.10.2006.)
    * Opće osnove: Fotografski aparat:osnovna upotreba (02.10.2006.)
    * Opće osnove: Načini izoštravanja (02.10.2006.)
    * Opće osnove: Tražilo (26.09.2006.)
    * Opće osnove: SLR - TLR - TTL (22.09.2006.)
    * Opće osnove: Pentaprizma (22.09.2006.)
    * Opće osnove: Ekspozicija (18.09.2006.)
    * Svjetlo i rasvjetu: Karakteristike svjetla - kontrast (14.09.2006.)
    * Estetiku fotografije: Lokalni kontrast (14.09.2006.)
    * Opće osnove: Kontrast (14.09.2006.)
    * Opće osnove: Makro fotografija (08.09.2006.)
    * Svjetlo i rasvjetu: Zakon kosinusa (04.09.2006.)
    * Opće osnove: Paralaksa (02.09.2006.)
    * Opće osnove: Okidač (30.08.2006.)
    * Digi osnove: Podešavanje parametara slike u aparatu (26.08.2006.)
    * Svjetlo i rasvjetu: Opadanje intenziteta svjetla (25.08.2006.)
    * Optiku: Totalna refleksija (16.08.2006.)
    * Opće osnove: Matematika u fotografiji (16.08.2006.)
    * Opće osnove: Automatsko izoštravanje (16.08.2006.)
    * Svjetlo i rasvjetu: Što je svjetlost? (12.08.2006.)
    * Svjetlo i rasvjetu: Sve boje dnevnog svjetla (08.08.2006.)
    * Svjetlo i rasvjetu: Dnevno svjetlo (31.07.2006.)
    * Optiku: Tehnologija proizvodnje objektiva (28.07.2006.)
    * Ispis: Tehnologija ispisa (21.07.2006.)
    * Svjetlo i rasvjetu: Prozorsko svjetlo (18.07.2006.)
    * Svjetlo i rasvjetu: Kućni studio (15.07.2006.)
    * Svjetlo i rasvjetu: Prirodno svjetlo (14.07.2006.)
    * Ispis: Crno-bijeli ispis (07.07.2006.)
    * Optiku: Bokeh (06.07.2006.)
    * Upravljanje bojom: Sinteza boje (01.07.2006.)
    * Ispis: Gorko iskustvo (01.07.2006.)
    * Ispis: Ispiši me (27.06.2006.)
    * Estetiku fotografije: Prostorni okvir (25.06.2006.)
    * Estetiku fotografije: Centar slike (24.06.2006.)
    * Opće osnove: Sjenilo objektiva (06.06.2006.)
    * Opće osnove: Perspektiva (31.05.2006.)
    * Ispis: Metamerizam (22.05.2006.)
    * Ispis: Stabilnost fotografija (19.05.2006.)
    * Estetiku fotografije: Razvoj vizualne svjesnosti. (29.04.2006.)
    * Opće osnove: Koja brzina zatvarača? (14.04.2006.)
    * Napredno digitalno: Desno eksponiranje (10.04.2006.)
    * Optiku: Geometrijska izobličenja objektiva (04.04.2006.)
    * Napredno digitalno: Prostorna frekvencija (31.03.2006.)
    * Estetiku fotografije: Fotografska prekoncepcija (27.03.2006.)
    * Opće osnove: Zatvarač (13.03.2006.)
    * Optiku: Čvorne točke i panorama (02.03.2006.)
    * Optiku: Izoštravanje slike (02.03.2006.)
    * Optiku: Žarišna duljina i backfokus (02.03.2006.)
    * Optiku: Sferna aberacija (27.02.2006.)
    * Optiku: Kromatska aberacija (27.02.2006.)
    * Optiku: Greške leća i objektiva (27.02.2006.)
    * Optiku: Jednostavna leća (23.02.2006.)
    * Optiku: Formiranje slike (22.02.2006.)
    * Optiku: Ogib ili difrakcija (22.02.2006.)
    * Optiku: Osnovni zakoni optike (21.02.2006.)
    * Optiku: Koliko je optika važna za fotografa? (21.02.2006.)
    * Svjetlo i rasvjetu: Tijela i svjetlost (16.02.2006.)
    * Svjetlo i rasvjetu: Refleksija (16.02.2006.)
    * Upravljanje bojom: Sustavi upravljanja bojom (14.02.2006.)
    * Svjetlo i rasvjetu: Temperatura i svjetlo (12.02.2006.)
    * Svjetlo i rasvjetu: Točkasti izvor svjetla (09.02.2006.)
    * Ispis: Veliki ispis (09.02.2006.)
    * Digi osnove: Kompakt ili DSLR (07.02.2006.)
    * Upravljanje bojom: Zašto upravljati bojom? (05.02.2006.)
    * Digi osnove: Prvi opis digitalca (23.01.2006.)
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    * Estetiku fotografije: Kontekst (19.01.2006.)
    * Estetiku fotografije: Osobni prostor (19.01.2006.)
    * Digi osnove: Što je sažimanje (08.01.2006.)
    * Upravljanje bojom: Toplina boje (04.01.2006.)
    * Upravljanje bojom: Psihološki učinak boje (04.01.2006.)
    * Upravljanje bojom: Percepcija boje (04.01.2006.)
    * Upravljanje bojom: Kromatska indukcija (04.01.2006.)
    * Upravljanje bojom: Metamerizam (04.01.2006.)
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    * Digi osnove: Memorijske kartice (04.01.2006.)
    * Estetiku fotografije: Orijentacija fotografije (03.01.2006.)
    * Opće osnove: Klasičan izrez (02.01.2006.)
    * Portret: Savjeti za početnike (02.01.2006.)
    * Portret: Asimetrija lica (02.01.2006.)
    * Estetiku fotografije: Koliko digitalne obrade? (31.12.2005.)
    * Opće osnove: Povijest snimanja serija (29.12.2005.)
    * Opće osnove: Komponente fotografije (27.12.2005.)
    * Digitalnu obradu: Digitalni izrez (22.12.2005.)
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    * Estetiku fotografije: Kadar (19.12.2005.)
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    * Opće osnove: EV (02.12.2005.)
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    16.01.2007.

    Business Process Management - Menadzment procesa i znanja
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    Jedan HR site ove tematike…

    Business Process Management - Menadzment procesa i znanja




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    14.01.2007.

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    Nine Things Developers Want More Than Money

    Many of the developers I know have been programming since they were in junior high. Whether it was building text-based games on an Apple IIe or creating a high school football roster app in Visual Basic, it’s something they did for the challenge, for the love of learning new things and, oh yes, for the ladies. Ladies love a man who can speak BASIC to his Apple.

    Code

    College graduates face a sad reality when they leave the protective womb of a university and have to get their first real job. Many of my friends found jobs paying around $25k out of school, and were amazed that the starting engineering and computer science salaries were nearly double that. But the majority of the engineers in my class didn’t become engineers for the money; we did it because it touched on a deep inner yearning to tinker and impress their friends. And did I mention the ladies?
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    13.01.2007.

    M42 - lenses - lens database - objektivi
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    M42 lens database

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