Trusted Computing Base (TCB)
Definition: The totality of protection mechanisms within a computer system including hardware, firmware, and software - the combination of which are responsible for enforcing a security policy.
A TCB consists of one or more components that together enforce a unified security policy over a product or system.
The introduction of the iPhone brought about a significant change in the way people used their mobile phones - probably because it was the first device of its kind to actually put the Internet into your hand. While many other devices tried to deliver what the iPhone did, none could.
But now, a new generation of smartphones running operating systems similar to those in computers, promise a whole new generation of applications for those of us who want to get tips and take better care of ourselves on a daily basis.
According to the Global Mobile Health Market Report 2010-2015 compiled by research2guidance, more than a third of 1.4 billion smartphone users in 2015 will be running some kind of mobile health care application. I take that to mean all health care apps, including wellness apps.
I know there will be folks who disagree with my perspective on this, but I put health care and wellness into two categories.
Health care is something that is essential for you, normally with an associated cost and some interaction with a licensed physician. Wellness, on the other hand, is advice and counsel on keeping yourself fit and healthy, doesn't come with a price tag (except what you have to pay to download an application) and can be something that a friend told you about.
So doing things like exercising, getting a good night's sleep, steering clear of substance abuse of all kinds, maintaining a reasonable diet can all help in our personalized wellness campaigns. And as they say, "there's an app for that."
For healthcare, it's more than just apps when talking about mHealth. Consumer health electronics devices like portable ECG machines, blood pressure monitors and weight scales seamlessly capture and transmit patient information from home, work or from the road. These devices and applications can be more of a "must" for patients rather than something that is simply nice to have.
I believe wellness applications will be the frontrunner in achieving the numbers in the report mentioned above.
There are already more than 17,000 health care applications that can be downloaded free or at a minimal cost for iOS, Android, WindowsMobile, Blackberry and other mobile operating systems. More than half of these are wellness apps with that number continuing to grow as the market for mHealth ramps up.
As the year goes on I plan on dedicating some of these blogs to highlight the various healthcare and wellness applications available for personal and/or professional use.
Have a safe and healthy week.Follow me on Twitter: @TechnicalJones
Definition: Any act or circumstance that involves classified information that deviates from the requirements of governing security publications.
For example, compromise, possible compromise, inadvertent disclosure, and deviation.
Joint Photographic Experts Group (JPEG)
Definition: An ISO/ITU standard for compressing still images. Pronounced "jay-peg," the JPEG format is very popular due to its variable compression range.
JPEGs are saved on a sliding resolution scale based on the quality desired. For example, an image can be saved in high quality for photo printing, in medium quality for the Web and in low quality for attaching to e-mails, the latter providing the smallest file size for fastest transmission over dial-up connections.
Not Great for Text
JPEGs are not suitable for graphs, charts and explanatory illustrations because the text appears fuzzy, especially at low resolutions.
Compressing images in the GIF format is much better for such material.
JPEGs Are Lossy
Using discrete cosine transform, JPEG is a lossy compression method, wherein some data from the original image is lost. It depends on the image, but ratios of 10:1 to 20:1 may provide little noticeable loss.
The more the loss can be tolerated, the more the image can be compressed.
Compression is achieved by dividing the picture into tiny pixel blocks, which are halved over and over until the desired amount of compression is achieved.
JPEGs can be created in software or hardware, the latter providing sufficient speed for real-time, on-the-fly compression. C-Cube Microsystems introduced the first JPEG chip.
JPEGs use the JPEG File Interchange Format (JFIF), and file extensions are .JPG or .JFF. M-JPEG and MPEG are variations of JPEG used for full-motion digital video.