Sunday, July 10, 2011

Autonomic Computing



“Autonomic Computing” is a new vision of computing initiated by IBM. This new paradigm shifts the fundamental definition of the technology age from one of computing, to one defined by data. Access to data from multiple, distributed sources, in addition to traditional centralized storage devices will allow users to transparently access information when and where they need it. At the same time, this new view of computing will necessitate changing the industry's focus on processing speed and storage to one of developing distributed networks that are largely self-managing, self-diagnostic, and transparent to the user. 
The term autonomic is derived from human biology. The autonomic nervous system monitors our heartbeat, checks our blood sugar level and keeps our body temperature close to 98.6 °F, without any conscious effort on our part. In much the same way, autonomic computing components anticipate computer system needs and resolve problems —with minimal human intervention. However, there is an important distinction between autonomic activity in the human body and autonomic responses in computer systems. Many of the decisions made by autonomic elements in the body are involuntary, whereas autonomic elements in computer systems make decisions based on tasks you choose to delegate to the technology. In other words, adaptable policy — rather than rigid hard coding determines the types of decisions and actions autonomic elements make in computer systems. 



Ref: http://seminars4you.info/ComputerScience.html

Brain Finger Printing



Brain finger printing is based on finding that the brain generates a unique brain wave pattern when a person encounters a familiar stimulus Use of functional magnetic resonance imaging in lie detection derives from studies suggesting that persons asked to lie show different patterns of brain activity than they do when being truthful. Issues related to the use of such evidence in courts are discussed. The author concludes that neither approach is currently supported by enough data regarding its accuracy in detecting deception to warrant use in court.

In the field of criminology, a new lie detector has been developed in the United States of America. This is called “brain finger printing”. This invention is supposed to be the best lie detector available as on date and is said to detect even smooth criminals who pass the polygraph test (the conventional lie detector test) with ease. The new method employs brain waves, which are useful in detecting whether the person subjected to the test, remembers finer details of the crime. Even if the person willingly suppresses the necessary information, the brain wave is sure to trap him, according to the experts, who are very excited about the new kid on the block.

Brain Finger printing is designed to determine whether an individual recognizes specific information related to an event or activity by measuring electrical brain wave responses to words, phrases, or pictures presented on a computer screen. The technique can be applied only in situations where investigators have a sufficient amount of specific information about an event or activity that would be known only to the perpetrator and investigator. In this respect, Brain Fingerprinting is considered a type of Guilty Knowledge Test, where the "guilty" party is expected to react strongly to the relevant detail of the event of activity. 

Existing (polygraph) procedures for assessing the validity of a suspect's "guilty" knowledge rely on measurement of autonomic arousal (e.g., palm sweating and heart rate), while Brain Fingerprinting measures electrical brain activity via a fitted headband containing special sensors. Brain Fingerprinting is said to be more accurate in detecting "guilty" knowledge distinct from the false positives of traditional polygraph methods, but this is hotly disputed by specialized researchers.




Ref: http://seminars4you.info/ComputerScience.html

MICROSOFT PALLADIUM



The Next-Generation Secure Computing Base (NGSCB), formerly known as Palladium, is a softwarearchitecture designed by Microsoft which is expected to implement "Trusted Computing" concept on future versions of the Microsoft Windows operating system. Palladium is part of Microsoft's Trustworthy Computing initiative. Microsoft's stated aim for
palladium is to increase the security and privacy of computer users. Palladium involves a new
breed of hardware and applications in along with the architecture of the Windows operating system. Designed to work side-by-side with the existing functionality of Windows, this
significant evolution of the personal computer platform will introduce a level of security that
meets the rising customer requirements for data protection, integrity and distributed
collaboration. It's designed to give people greater security, personal privacy and system integrity.

Internet security is also provided by palladium such as protecting data from virus and hacking of
data In addition to new core components in Windows that will move the Palladium effort forward, Microsoft is working with hardware partners to build Palladium components and features into their products. The new hardware architecture involves some changes to CPUs which are significant from a functional perspective. There will also be a new piece of hardware called for by Palladium that you might refer to as a security chip. It will provide a set of cryptographic functions and keys that are central to what we're doing. There are also some associated changes under the chipset, and the graphics and I/O system through the USB port--all
designed to create a comprehensive security environment.

"Palladium" is the code name for an evolutionary set of features for the Microsoft Windows operating system. When combined with a new breed of hardware and applications, "Palladium" gives individuals and groups of users greater data security, personal privacy and system integrity. Designed to work side-by-side with the existing functionality of Windows, this significant evolution of the personal computer platform will introduce a level of security that meets the rising customer requirements for data protection, integrity and distributed collaboration .

ASYMMETRIC DIGITAL SUBSCRIBER LINE (ADSL)




Digital Subscriber Lines (DSL) are used to deliver high-rate digital data over existing ordinary phone-lines. A new modulation technology called Discrete Multitone (DMT) allows the transmission of high speed data. DSL facilitates the simultaneous use of normal telephone services, ISDN, and high speed data transmission, e.g., video. DMT-based DSL can be seen as the transition from existing copper-lines to the future fiber-cables. This makes DSL economically interesting for the local telephone companies. They can offer customers high speed data services even before switching to fiber-optics.

DSL is a newly standardized transmission technology facilitating simultaneous use of normal telephone services, data transmission of 6 M bit/s in the downstream and Basic- rate Access (BRA). DSL can be seen as a FDM system in which the available bandwidth of a single copper-loop is divided into three parts. The base band occupied by POTS is split from the data channels by using a method which guarantees POTS services in the case of ADSL-system failure (e.g. passive filters).