Resolve startup issues and perform disk maintenance with Disk Utility and fsck

df -hl
Look for some lines of text that look like this:

Filesystem Size Used Avail Capacity Mounted on
/dev/disk0s3 37G 20G 17G 55% /
/dev/disk0s5 37G 37G 641M 98% /Volumes/Storage
 
Make a note of the first “disk” name that appears after /dev/, such as “disk0s3.” This is your filesystem ID for your startup volume.
At the prompt, type the following command and then press Return:

df -hl
Then type the following command, where “disk0s3” is your filesystem ID you noted in step 4, then press Return:

sudo fsck_hfs -l /dev/disk0s3
When prompted, enter your admin password, then press Return to begin the verification.

Geographic Information Systems Help Scholars See History – NYTimes.com

Geographic Information Systems, known as GIS, allowed Ms. Knowles and her colleagues to recreate a digital version of the original Gettysburg battlefield from historical maps, documented descriptions of troop positions and scenery, and renderings of historic roads, fences, buildings and vegetation. “The only way I knew how to answer the question,” about what Lee saw, Ms. Knowles said, “was to recreate the ground digitally using GIS and then ask the GIS program: What can you see from a certain position on the digital landscape, and what can you not see?”

Mind the Gap: Embracing Wikipedia – Talking in the Library

The student explained that he had heard that soldiers in the Pacific during World War II carried coconuts with them because the coconut milk could be used like plasma. If you look at the Wikipedia article on coconuts, you will find that “fact.” I turned to the rest of the class and asked if any of them would inject coconut milk in their veins on the say-so of a Wikipedia article. I am delighted to report that not one of them would. We then set about trying to answer the coconut milk transfusion question–and each time someone found a source, we asked, “Would I inject the coconut milk into my veins based on this source?” 

Apple – Education Seminars & Events – Summer Semester: Math

This 60 minute webcast, followed by an interactive Q & A, will be presented by Apple Distinguished Educators who will share their stories of how they are using technology to enrich teaching and learning in math. You’ll see how these innovative educators are using products such as iPad, iPod touch, and MacBook to deliver curriculum in new and exciting ways, personalize learning, and put anytime learning into every student’s hands. They’ll share examples of student work, provide demos, and share the results that they have achieved. You’ll discover best practices that you can incorporate into your classroom this fall.

OpenStack: A New Foundation for Open Cloud Computing | Dell

An innovator’s dream, OpenStack is a massively scalable infrastructure-as-a-service cloud solution. It offers support for existing ecosystems plus opportunities to influence future direction. Better yet, it provides foundational components for cloud services. By building on the OpenStack foundation, you can position yourself to deliver a complete cloud solution.