INTRODUCTION :

The Internet has made large amount of information available to the average computer user at home, in business and education. For many people, having access to this information is no longer just an advantage, it is essential.

By connecting a private network to the Internet can expose critical or confidential data to malicious attack from anywhere in the world. The intruders could gain access to your sites private information or interfere with your use of your own systems. Users who connect their computers to the Internet must be aware of these dangers, their implications and how to protect their data and their critical systems.

Therefore, security of network is the main criteria here and firewalls provide this security. The Internet firewalls keep the flames of Internet hell out of your network or, to keep the members of your LAN pure by denying them access the all the evil Internet temptations.

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ABSTRACT

Automobiles have become an integrated part of our daily life.  The development of technology has improved

the automobile industry in both cost & efficiency.  Still, accidents prove as challenge to technology.  Highway accident news are frequently found in the newspapers.  The automobile speed has increased with development in technology through years and the complexity of the accidents has also increased.  Higher speeds the accidents prove to be more fatal.  Man is intelligent with reasoning power and can respond to any critical situation.  But under stress and tension he falls as a prey to accidents.  The manual control of speed & braking of a car fails during anxiety.  Thus automated speed control & braking system is required to prevent accidents.  This automation is possible only with the help of Artificial Intelligence (Fuzzy Logic).

Abstract:

      Every one of us might have seen the heavy trucks running on the roads. These vehicles have efforts on their axles very close to the allowed limits, mainly driving on rough roads or during cornering. In this case, the use of conventional suspension systems  like those using McPherson Struts, Multi Link Suspension, Trailing Arm Suspension, 4- bar suspension etc. can increase the axle’s overload phenomena. Hydropneumatic suspension system, when used in these vehicles, takes an asset in providing a better load distribution per axle, decreasing the overload problem and thereby increasing the ride comfort. The well known problem of the damper co-efficient changes due to load variation in vehicles using conventional suspension system is even more observable when a hydropneumatic spring is applied due to its non linearity, as opposed to the several advantages this spring type brings. This problem is more emphasized in vehicles with a large mass range when they pass from a no load condition to a full load condition.

Biometrics (ancient Greek: bios life, metron measure) refers to two very different fields of study and application. The first, which is the older and is used in biological studies, is the collection, synthesis, analysis and management of data in biology. Biometrics in reference to biological sciences, or biostatistics, has been studied since the early twentieth century.^[1] Biometrics is the science and technology of measuring and analyzing biological data. In information technology, biometrics refers to technologies that measure and analyze human body characteristics, such as fingerprints, eye retinas and irises, voice patterns, facial patterns and hand measurements, for authentication purposes.

Biometric characteristics can be divided in two main classes, as represented in figure on the right:

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