Friday, May 30, 2014

VIDEO: What happens when you do a web search?


VIDEO: http://youtu.be/BNHR6IQJGZs

TRANSCRIPT:  How search works, by Matt Cutts

Hi my name is Matt Cutts I’m an engineer in the Quality Group at Google and I’d like to talk today about what happens when you do a web search.

The first thing to understand is that when you do a Google search you aren’t actually searching the web. Your searching Google’s index of the web or at least as much of it as we can find.

We do this with software programs called spiders. Spiders start by fetching a few webpages and then they follow the links on those pages and fetch the pages they point to and then follow all the links on those pages and fetch the pages they link to and so on until we’ve indexed a pretty big chunk of the web. Many billions of pages stored across thousands of machines.

Now suppose I want to know how fast the cheetah can run. I type in my search, say “cheetah running speed” and hit return. Our software searches our index to find every page that includes those search terms. In this case there are hundreds of thousands of possible results.

How does Google decide which few documents I really want? By asking questions. More than 200 of them like how many times does this page contain your keywords? Do the words appear in the title? In the URL? Directly adjacent? Does the page include synonyms for those words? Is this page from a quality website or is it low quality or even spammy? What is the pages Page Rank. That is a formula invented by Google founders Larry Page and Sergey Brin that rates a web page’s importance by looking at how many outside links point to it and how important those links are.

Finally, we combine all those factors together to produce each pages overall score and send you back your search results about half a second after you submit your search.

At Google we take our commitment to delivering useful and impartial search results very seriously. We don’t ever accept payment add a site to our index, update it more often or improve its ranking. Let’s take a look at my search results:

Each entry includes a title, a URL, and a snippet of text to help me decide if page has what I am looking for. I also see links to similar pages, Google’s most recent stored version of that page, and related searches that I might want try next.

And sometimes, along the right and at the top of the search results are ads. We take our advertising business very seriously as well. Both our commitment to deliver the best possible audience for advertisers, and to strive to show only ads that you want to see. We are very careful to distinguish your ads from your regular search results. And we won’t show any ads at all if we think they won’t help you find the information that you’re looking for., which in this case, the cheetah’s top running speed is more than 60 mph.

Thanks for watching this How Search Works Video and I hope this made Google and search engine marketing in general, a little more understandable.

Highly Personal Data Is the Future of Tech, But Is It Secure?

http://www.nbcnews.com/tech/security/highly-personal-data-future-tech-it-secure-n117091


Wednesday, May 28, 2014

Online safety. Are you a hacker's target?

https://www.examtime.com/p/53089-Online-Safety-notes




Revision activities: Cloud computing


Google has been voted one of the best companies to work for

https://app.box.com/s/ic3eqa7qzq9h1n752h9l

Computer systems

https://app.box.com/s/w2vdchkn7llzw674pu24

Machine languages

https://app.box.com/s/0c6ade1gii9u3acvceuc

Virtual worlds

https://app.box.com/s/witfq0t7jifgsmf11pn9

Networks

https://app.box.com/s/f49fgcmw3vm67t2qyskx

Social networks

https://app.box.com/s/zydyxfhx19qw11a3w8pv

Web browsers

https://app.box.com/s/4ie482bxtpzif90s5q5q

Wireless communications

https://app.box.com/s/mht1ik00z4vmsgy4mj1a

Tuesday, May 27, 2014

Video: the history of Intel

https://www.youtube.com/watch?v=74tAw_f4UPM


TED TALKS ABOUT COMPUTERS

http://www.ted.com/topics/computers

TED TALKS ABOUT THE INTERNET

http://www.ted.com/topics/Internet

Programming languages

https://app.box.com/s/ylxe896m3x0y6dhooyrq

Instagram

https://app.box.com/s/pry4m1j1asn2bfng4cob

Multimedia

https://app.box.com/s/e0ivd3gst61zi58ad3zs


Nanotechnology

https://app.box.com/s/5dgj1sjmqlb1bp1y6g7g

Big Brother is watching you

https://app.box.com/s/ozz3d4brr4hqwqquxxje

Pinterest

https://app.box.com/s/5sjc000te8ivssdlf97n

How will microchips work in the 21st century?

https://app.box.com/s/qr3fhocwle2x3p7s7nwu

Pre-history and history of computers

https://app.box.com/s/mj5mi4bal793x8l00y61

Video: who invented the Internet? And why?

Explore more visuals like this one on the web's largest information design community - Visually.

Timeline: Internet and web evolution


PART 1:



Wednesday, May 21, 2014

Tuesday, May 20, 2014

Il Digital portfolio della 3Di

https://app.box.com/s/ucu4e1ree754guc7yhrs

Facebook: listening and reading comprehension


Text:
audio:

audio:

Battle of the mobile platforms. Listening and reading comprehension


Text:

audio:


Microsoft Reboot: listening and reading comprehension

text:

audio:

Monday, May 19, 2014

Saturday, May 17, 2014

Social networks, blogs and online dangers: un'animazione realizzata con POWTOON

http://youtu.be/NuYLDP-f1uM

Steve Jobs: il capitolo di un ebook realizzato con ISSUU.COM

http://issuu.com/gruppoinglese/docs/steve_jobs_7abb2854eb907d



Digital Portfolio: una raccolta di progetti multimediali realizzati dagli studenti della 4Di nelle collaborative activities



Renewable energies: una presentazione realizzata con In3GALLERY:

Wearable Technologies: Un video realizzato con ANIMOTO

e una presentazione multimediale realizzata con TACKK:

The history of the Internet: una timeline realizzata con TIMEGLIDER:

Steve Jobs, una presentazione realizzata con EDYNCO:

Selfies: un quiz realizzato con QUIZLET:

Augmented reality: una presentazione realizzata con EMAZE:


Thursday, May 15, 2014

Grammar practice

http://www.esolcourses.com/

Revision activities

http://www.esolcourses.com/topics/ict-tutorials.html

Revision activities

http://www.esolcourses.com/topics/computers.html

Listening activities



http://www.listenaminute.com/c/computers.mp3

Minilessons

https://app.box.com/s/ftao92cgm416akqjjg8k

Online games

http://www.breakingnewsenglish.com/1307/130729-world_of_warcraft-m.pdf