Sunday, October 31, 2010

How Much Math Do We Really Need?

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How Much Math Do We Really Need?

Pickens writes "G.V. Ramanathan, a professor emeritus of mathematics, statistics and computer science at the University of Illinois at Chicago, writes in the Washington Post that although a lot of effort and money has been spent to make mathematics seem essential, unlike literature, history, politics and music, math has little relevance to everybody's daily life. 'All the mathematics one needs in real life can be learned in early years without much fuss,' writes Ramanathan. 'Most adults have no contact with math at work, nor do they curl up with an algebra book for relaxation.' Ramanathan says that the marketing of math has become similar to the marketing of creams to whiten teeth, gels to grow hair and regimens to build a beautiful body, but even with generous government grants over the past 25 years, countless courses, conferences, and books written on how to teach teachers to teach, where is the evidence that these efforts have helped students? A 2008 review by the Education Department found that the nation is at 'greater risk now' than it was in 1983, and the National Assessment of Educational Progress math scores for 17-year-olds have remained stagnant since the 1980s (PDF). Meanwhile those who do love math and science have been doing very well and our graduate schools are the best in the world. 'As for the rest, there is no obligation to love math any more than grammar, composition, curfew or washing up after dinner. Why create a need to make it palatable to all and spend taxpayers' money on pointless endeavors without demonstrable results or accountability?'"

Read more of this story at Slashdot.

Ruby shadow

As the last sunset of October faded, it cast a ruby shadow through cranberry glass.

--Brad

Thursday, October 28, 2010

Article: Reframing College Completion

Ghosts? Goblins? Pssh. This is REALLY scary [repost]

I've debate for several days now about whether and how to discuss this, and I've decided that a demonstration of how vulnerable popular web sites are to hacking may be the best thing.

It is common knowledge among internet security professionals, and many savvy users, that the most popular websites - Facebook, Twitter, Flickr, etc. - are especially vulnerable because they do not force secure sessions. Basically what happens is that your initial login is encrypted, but then a session certificate ("cookie") is sent, often through unencrypted web space. If you are connecting to the service through an open, unsecured WiFi network, its like shouting your ATM PIN number across the cafeteria.

To demonstrate how easily this information can be snagged from the air, Eric Butler developed a "demonstration" application called "Firesheep." The Firefox plug-in takes only a minute or so to download and install, and then you are a hacker. No pesky terminal code or anything to worry about.

I have installed Firesheep on my desktop computer, which normally does not use WiFi, and I will be capturing my own accounts. Otherwise, what I am about to do technically violates the terms of service of about every service I am using. Be it known, though, that I am capturing only my own account data, and only for demonstration purposes.

Here is what Firesheep looks like when installed:

Now, I am going to connect my iPad to the same unsecured WiFi network ("Open Edison") and connect to my Facebook account using the Safari Mobile web browser (more about this in a minute). Here goes....

Pop. Almost instantly my account name and service appears. It even shows my profile picture.

If I double-click the entry in the Firesheep pane, I am instantly logged into Facebook using those credentials. From there I have complete account access.

Logging into other services adds them to the Firesheep pane:

And presumably they will stay there as long as I want them. There is no warning from any of the services that my account has been "hacked," because as far as they know, I am the owner of the accounts and nothing is amiss.

Now, interestingly, a few experiments show that logging onto those same services on the same unsecured network, but using an iPad app rather than the generic web browser, hides the account session cookie from Firesheep. For example, if I use the "Facebook app" Firesheep detects the account, because it is just a web app and launches the Safari Mobile browser. But connecting to my Facebook stream through Flipboard hides the session from Firesheep. And on a secured WiFi network (basically one that you have to log into) Firesheep is unable to detect the account cookies.

I'm not sharing this to turn you all into hackers. I'm doing it to make you think about how and where you use your online accounts. While Firesheep comes preloaded with scripts for detecting about a dozen of the most popular web services, "developers" can write their own (again, presumably to test the security of their own services, but then who knows?).

For more about Firesheep and a discussion about implications of web security go to Eric Butler's website http://codebutler.com/firesheep.

Ghost? Goblins. Pssh. This is REALLY scary....

I've debate for several days now about whether and how to discuss this, and I've decided that a demonstration of how vulnerable popular web sites are to hacking may be the best thing.

It is common knowledge among internet security professionals, and many savvy users, that the most popular websites - Facebook, Twitter, Flickr, etc. - are especially vulnerable because they do not force secure sessions. Basically what happens is that your initial login is encrypted, but then a session certificate ("cookie") is sent, often through unencrypted web space. If you are connecting to the service through an open, unsecured WiFi network, its like shouting your ATM PIN number across the cafeteria.

To demonstrate how easily this information can be snagged from the air, Eric Butler developed a "demonstration" application called "Firesheep." The Firefox plug-in takes only a minute or so to download and install, and then you are a hacker. No pesky terminal code or anything to worry about.

I have installed Firesheep on my desktop computer, which normally does not use WiFi, and I will be capturing my own accounts. Otherwise, what I am about to do technically violates the terms of service of about every service I am using. Be it known, though, that I am capturing only my own account data, and only for demonstration purposes.

Here is what Firesheep looks like when installed:

[cid:0A882D1A-7975-43D5-A110-E0463E7B80A8@edisonohio.edu]

Now, I am going to connect my iPad to the same unsecured WiFi network ("Open Edison") and connect to my Facebook account using the Safari Mobile web browser (more about this in a minute). Here goes....

Pop. Almost instantly my account name and service appears. It even shows my profile picture.

[cid:B83C05DD-D116-45EB-96F5-166A75A99BE8@edisonohio.edu]

If I double-click the entry in the Firesheep pane, I am instantly logged into Facebook using those credentials. From there I have complete account access.

Logging into other services adds them to the Firesheep pane:

[cid:B15C94BF-A8E3-4FED-ABBF-56D5510A5B16@edisonohio.edu]

And presumably they will stay there as long as I want them. There is no warning from any of the services that my account has been "hacked," because as far as they know, I am the owner of the accounts and nothing is amiss.

Now, interestingly, a few experiments show that logging onto those same services on the same unsecured network, but using an iPad app rather than the generic web browser, hides the account session cookie from Firesheep. For example, if I use the "Facebook app" Firesheep detects the account, because it is just a web app and launches the Safari Mobile browser. But connecting to my Facebook stream through Flipboard hides the session from Firesheep. And on a secured WiFi network (basically one that you have to log into) Firesheep is unable to detect the account cookies.

I'm not sharing this to turn you all into hackers. I'm doing it to make you think about how and where you use your online accounts. While Firesheep comes preloaded with scripts for detecting about a dozen of the most popular web services, "developers" can write their own (again, presumably to test the security of their own services, but then who knows?).

For more about Firesheep and a discussion about implications of web security go to Eric Butler's website http://codebutler.com/firesheep.>

Tuesday, October 26, 2010

What Senior College really means

I have just come from leading the third session of a Senior College mini-course at Dorothy Love Retirement Community in Sidney. About 20 active seniors attended the three Tuesday evening sessions. The topic: Bananas. I decided to take a single, everyday subject - one we all take for granted - and explore it from a multi-disciplinary approach. So, over the course of three weeks we looked at bananas from a scientific, historical, political, economic, cultural, and personal perspective. We made connections from politics to science, from economics to music, and back again.

At the end of tonight's session, one of the participants came up to chat. She smiled and said thank you. Then she said she was born in '18. She had lost her husband of 65 years in June, and she is trying to get out and do more things. And seeing that I wasn't getting it, she said, "college was never an option for me. I was born in Sioux City, and had to go west to find work. I'm grateful for this opportunity to experience what college might have been like for me."

Wow! Let's do it again! Soon.

Monday, October 25, 2010

WidgetBox Mobile simplifies web app development

WidgetBox Mobile is offering a service for designing and deploying web apps for mobile devices, independent of platform, using HTML5.

The service has a monthly fee, but is worth watching as a bellwether of other online app design+deploy options.

Hear Shakespeare in the original pronunciation

University of Kansas production revives 16th century pronunciations to make characters not sound like Gandalf.

Saturday, October 23, 2010

Article: Have Scientists Finally Discovered Evidence for Psychic Phenomena?!

A Cornel parapsychology researcher says experiments suggest extroverts can perform better now on tests they'll study for later, and become aroused by future porn.

Article: The Goldmine Of Opportunities In Gov 2.0

Article: Apple reinvents software distribution

Apple haters already be hatin', but my guess is SteveCo will need to invest in a few more trucks to haul the cash to the bank.

Apple reinvents software distribution
http://blogs.yankeegroup.com/2010/10/21/apple-reinvents-software-distribution/

I'm already a convert to one-click buying thanks to my iTunes-iPhone-iPad experience. A couple of weeks ago my Mom was telling me about a book she thought I'd like (Devil in the White City) and she was holding a trade paper copy of it as she sat next to me. My instinct was to search the Amazon Kindle store, one-click buy it and I was reading the author's preface while we were still discussing it.

She said "Why didn't you just take my copy?" Um........

(Sent from Flipboard)

Article: Google Earth: This Is (1945) London

Friday, October 22, 2010

The Social Network - see it!

Just came from screening of The Social Network. Very, very good movie.

Don't know how "true" it is. Don't care. True enough. Immediate. Familiar and strange.

Proves nerds can be both jerks and successful. And money is not always the driving force. Sometimes it is a byproduct.

Food court promotion fail

Have they thought this through?

--Brad

Student pranks prof - sweet!

A student buries the lyrics of the infamous "Rickroll" in a term paper. Awesome!

Be sure to read the comments - especially you, teachers!

I did two similar things. In high school, for a paper about Leonardo da Vinci's "mirror writing," I wrote the paper in mirror writing. (Yes, that was when we turned in hand-written papers. No, I'm not as old as Da Vinci.) Got an A - teacher used a mirror to read it.

In college, in a class called "16th Century Non-Dramatic Literature" (seriously) I wrote my final exam entirely in limerick form. Got an A. Prof was as bored as I was, apparently.

Thursday, October 21, 2010

FaceTime comes to the Mac

Buried in the news reports coming from Apple's "Back to the Mac" announcements of new MacBook Air models and a preview of Lion and iLife '11 is word that FaceTime is now available for the Mac in Public Beta.

Install is simple, and FaceTime integrates with your Address Book contacts to make calling easy.

Of course, the first person I called was... ME!

[cid:A9F1F6A1-6CB2-4C86-AFCB-1DA5CBE37A5C@edisonohio.edu]

The significance of course is that the desktop for Mac client effectively quadruples the number of FaceTime-ready devices, as all iMacs, MacBooks, MacBook Airs, etc. running Snow Leopard (OS X 10.6.4 or later) potential clients.

Tagging email autoposts

* Add tags to your post by email (and bookmarklet) by entering them in the subject line: ((tags: New York, food)).

More Posterous email tips.

Wednesday, October 20, 2010

Pandora find of the week - Tinsley Ellis Live: Highwayman

Live! Highwayman

I was about to recommend a brand new collaboration between Elton John and Leon Russell, "The Union," released Oct 19 2010 on the Mercury label, and then, at lunch, on Pandora up pops an 8-minute burning blues guitar live performance of "Real Bad Way" by Atlanta songwriter-bluesman Tinsley Ellis.

Ooooh, baby! Straight to iTunes for a download of "Highwayman" (2005, Alligator Records) to the iPhone. If you dig blues-rock, guitar, Hammond B3 and electric bass, get this album. At least get the track. You owe it to your ears. Goosebumps!

Friday, October 15, 2010

Saturday, October 9, 2010

9 Free Resources for Learning Photoshop

9 Free Resources for Learning Photoshop
MASHABLE! | OCTOBER 8, 2010
http://pulsene.ws/86nD


This post originally appeared on My Life Scoop, where Mashable regularly contributes articles about using social media and ...

Wednesday, October 6, 2010

New map of the social universe

The genius that is xkcd does it again!

http://www.xkcd.com/802/

Coming soon to every answer to the question "What does the Internet look like?"