Showing posts with label power. Show all posts
Showing posts with label power. Show all posts

Beating the odds the real power of education

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(Cross-posted on the Google for Education Blog.)

Editor’s Note: Today we hear from our Chief Education Evangelist, Jaime Casap, who spoke at First Lady Michelle Obama’s 2015 “Beating the Odds” Summit. The event welcomed more than 130 college-bound students from across the country and focused on sharing tools and strategies to help more students successfully transition to college and complete the next level of their education.

Last week I had the honor of sharing my story with over 130 college-bound students at First Lady Michelle Obama’s "Beating the Odds" Summit — part of her Reach Higher initiative. These students came from across the country and different backgrounds. They included urban, rural, foster, homeless, special needs and underrepresented youth, all of whom have overcome substantial barriers to make it to college.

In my daily job I get to work with a group of people focused on building technology and programs that can help support teachers, who help empower their students to be lifelong learners. I believe education has the power to rid poverty and change the destiny of a family in just one generation. Reach Higher has the same mission: to invest in our students and help them get the education they need to thrive.

This mission is also deeply personal for me. I was raised in Hell’s Kitchen, New York by a single mother who came to America from Argentina. On my first day of school, I didn’t speak English. I grew up fast and watched my elementary school friends turn into addicts and criminals. When I looked for a road out, I saw only dead ends, until I realized education was a road out. But it wasn’t easy: everything around me shrieked, “you won’t make it; you aren’t meant to succeed.”

I realize now that the negative voices are always there; you have to push them down. With the help of my teachers, I graduated from high school and committed to going to college. There were many times when I felt like I didn’t belong — at that time the college graduation rate for Latinos was around five percent — but I graduated with a double major, packed up my stuff and drove across the country to pursue a Master of Public Policy degree. The only way I did it was by convincing myself to prove the naysayers wrong.

Education didn’t just change my life, it changed my family, too. I now have three kids, and my eldest daughter graduated from college last month. I never had a conversation with her about college, she just assumed she was and should go to college. My 14-year-old wants to build a college curriculum for himself focused on game design. My kids don’t face the barriers I did; they see no obstacles in their way.

This is to say that I believe in what the First Lady is trying to accomplish with Reach Higher. Students must go beyond high school graduation — whether that’s a four-year college, community college or a technical/certification program. One reason this is essential is because today’s high-school-only graduates earn just 62 percent of what their college-graduate peers earn. We need to prepare all our students, especially our most vulnerable students, for their future and help them reach high.

Often we ask our students the wrong question: “What do you want to be when you grow up.” Instead, we should ask “What problem do you want to solve?” We should empower students to take ownership of their learning. As much as I want students to be college and career ready, I also want them to be curious lifelong learners ready to tackle the world’s problems.

For millions of students, “reaching higher” means beating the odds with a lot of hard work, a healthy disrespect for the impossible, and some luck. It means ignoring self-doubt and proving the haters wrong. It means being proud of the experiences that define you — they will be a competitive advantage some day. It means believing in education and believing in yourself, then sharing your story with the world.

See recorded coverage of the event.
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More cores more power and still no effective cooling system

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I think we really have a problem here. Watching the world of technology, there is a clear tendency to equip mobile devices with more and more power. Looking at the specifications of fleshly unveiled Nvidia Tegra 4 (72 custom Nvidia GeForce GPU cores, new quad-core variant of ARMs Cortex-A15 CPU) I can say Im already pretty amazed. But this enthusiasm might be suppressed very soon!

Where is the issue? You might say weve already been there few years ago, when multi-cores CPUs were gaining more and more attention from non-professional desktops/notebooks users. Marketing did a great job then. Nobody cared that most of consumers wouldnt be able to use the power of multi-cores. Nobody told them, that powerful CPU in pair with 1 GB of RAM memory and 5.400 RPM hard drive will be a waste of money and power. But its not the point here.

What matters is the method of heat extraction. Air or water cooling systems are very advanced these days and can be very effective when it comes to PC. So if you really want to use 4 cores CPU for MS Word Editing or Internet browsing on your PC, there is nobody stopping you, apart of your own pocket. But what about mobile phones, tablets or so popular these days ultrabooks? Cooling systems on those devices are really bad. And what makes it even worse, there is no revolution coming. At least not for mobile phones or tablets.

Most of new ultrabooks (equipped with powerful CPUs and dedicated GPU) suffers from so called "throttling", caused by too much heat generated by the CPU and GPU when under heavy load together. Extra thin constructions are not effective when it comes to cooling, because the size of cooling heaps and fans needs to be reduced to minimum. Of course there is some room for improvements. For example, in  new MacBook Pro you can find two fans and quite smart arrangement of cooling pipes. Notebooks/ultrabooks designers surely have more options and more space than mobile phones designers. So I believe this might get better in time.

Whats the situation when it comes to mobile phones? As I mentioned before, I think its really bad. First of all, you cant put any fan inside your phone. The space inside is so limited, so forget about advanced system of micro cooling pipes. So what is the current solution? For example, idea of 5th companion core presented by Nvidia in Tegra 3. When device is in idle state, 5th core is taking care of low level tasks, running at very low frequency. Yes, this is quite smart. Tegra 4 will have the same mechanism. Another example - smart governors. When you turn your screen off, you CPU frequency will be limited to lets say 340 MHz. When turning screen on, it will go back to lets say 1,7 GHz. Nice, huh?

So... wait a minute!

It seems that from one hand we are buying super powerful devices, and from the other hand there are plenty of methods to limit this power. People are happy these days when they can use their super phone for more then 16 hours without charging. They do everything to achieve that - they are limiting GPU power, CPU power, turning off capacitive buttons lights or changing screen backlight to minimum (and they can barely see whats written on the screen). So take a moment, sit on the chair and count - how many times have you actually used the power of your device? Do you really need 4 cores and 2GB of RAM for Gmail, Chrome or Andry Birds? I dont think so. You might say you are playing heavy 3D games. Okay - how long can you play Need For Speed on your device in the bus? Im pretty sure your device will be discharged after less then 1 hour. So, you might say you can always play it at home, with a device connected to the charger. Personally, when sitting home I prefer playing Need For Speed on PC or notebook.

Whats the point in having 4 cores CPU, 2GB RAM and 72 custom Nvidia GeForce GPU cores if you cant use it? In idle this will be limited to 1 hidden core running something like 70 MHz. When using the phone for daily tasks (photos, internet, mail, calling) it will use about 20% of the potential power. When playing games it might use the full power for some period of time, then will be down-clocked because of generated heat. Is it comfortable to hold a device in your hand that have a temperature of 59 °C? I dont think so...
Of course there is a matter of reducing the size of the chipsets. Newer production processes mean lower power consumption. But this wont help.

So is it a right and good direction, when a companies are making more and more powerful hardware, trying to figure out better and more effective way to limit this power at the same time? Its like putting in and out. And all for the money from customers.

Do you have any questions or comments? Feel free to share! Also, if you like this article, please use media sharing buttons (Twitter, G+, Facebook) below this post!


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Windows 10 Power User Menu

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Power User Menu of  Windows 10 (and Windows 8) is a pop-up menu with shortcuts tosome usedful "Power User" Windows tools. You can easy access the "Old Control Panel" here.


To Open Power User Menu,

  • Right click the Start button, or 
  • WIN+X: Pressing the WIN (Windows) key and the X key together.


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