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For people who spend the majority of their days sitting in standard wheelchairs or lying in beds, pressure sores are a very probable reality. Yet they don't have to be, thanks to assistive technology like tilt or recline wheelchairs that help distribute pressure to other parts of the body. While pressure relief is the main objective to using either a tilt wheelchair or a recline wheelchair, each has its unique qualities that help with posture. (Even though some chairs come with both tilt and recline options, for clarity purposes, they will be addressed as two separate seating systems.) "Obviously, a tilt wheelchair does a better job of providing postural stability by not changing any of the angles of the knee and hip, while recliners allow the pelvis and hips to move through approximately 90 degrees of motion. Both seating systems have their own specific functions," noted David Kreutz, PT, seating specialist at the Shepherd Center in Atlanta. Reclining wheelchairs move the body from a flexed position to an extended position, making the chairs more likely to elicit a spastic response in the user. Because tilt and recline chairs use gravity to their advantage and come with head rests, patients who have poor head, neck and trunk control may benefit from the stability and balance they provide. When in tilt or recline, gravity helps the patient improve balance and head control. Once a tilt chair is prescribed for a patient, it is important to teach the caregivers how to use the tilt function and position the patient correctly. If a patient is cognitively intact, it is also important to teach that individual how he or she should be positioned in the chair, to be able to instruct caregivers. Candidates who would be suited for a recliner chair are those who cannot achieve a 90-degree hip-to-back angle when sitting. For example, patients who have hip precautions following total hip replacement surgery, patients who have had cardiac surgery and might develop

The hacker collective Anonymous has made headlines across the globe for highly publicized attacks, and the group has some private companies in their sights as well.

Embattled company Netflix announced that they expect to lose money in 2012 as part of a stock offering and sale of convertible bonds that raised $400 million.

Oil and gas rigs are some of the biggest moveable structures in the world. Modern rigs cost millions of dollars and can weigh up to 30,000 tons.

Oil and gas rigs are some of the biggest moveable structures in the world. Modern rigs cost millions of dollars and can weigh up to 30,000 tons. So what does it take to move these engineering marvels? We ask David Wells, CEO of consultancy, and rig-moving specialists, Aqualis Offshore.