We propose and analyze a scalable and efficient cluster-based group key management protocol for secure group communications in mobile ad hoc networks. For scalability and dynamic reconfigurability; we take a cluster-based approach by which group members are broken in to cluster-based subgroups and leaders in subgroups securely communicate with each other to agree on a group key in response to membership change and member mobility events. We show that secrecy requirement for group communication is satisfied. Further, there exists an optimal clus ....etc

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I want a perfect and full explanation of dc generator characteristics.. ....etc

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ac dc characteristics of op amp ppt

CHARACTERISTICS OF OPERATIONAL AMPLIFIERS

Objective:

The objective of this experiment is to observe and measure several important operational amplifier characteristics. These characteristics are mostly a product of the bipolar transistor construction of the actual amplifier. They are especially attributable to the pair of differentially oriented transistors at the amplifier input. Two of the characteristics can be attributed to the internal compensation capacitor of the 741 Op amp. In this experiment, the ....etc

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Advanced block cipher Description
introduction
traffic Posted in 2001, NIST
traffic designed to overcome problems with 3DES
length of the Block containing 128 bits
traffic key length of 256 bits and 128.192
traffic Standard symmetric block cipher Key somewhere.
Description
traffic security
traffic using the S-Box as non-linear components
traffic software implementations
traffic performance through parallelism
traffic runs on various platforms
traffic without reducing the tour so not incresed speed
traffic with limited space environments
Traffic ....etc

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to get information about the topic secondary storage devices full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-data-storage-devices ....etc

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ABSTRACT

This paper describes in detail, field experiments performed on a single-phase, distribution transformer to study the behavior of transformer terminal parameters during internal winding faults. A custom-built transformer provided with external taps was used for these tests. The taps were used to stage various internal winding faults in the transformer. Terminal values of voltages and currents were monitored and the results presented. A comparison of these results with simulation results is also presented


Presented By:
Palme ....etc

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Presented by:
Jeong Sik Yim
Heong Kook Joo
Dong Seong Sohn


ABSTRACT

The holddown Spring is one of the major components of a fuel assembly for PWR. It holds the fuel assembly firmly seated down on the lower core plate and allows the FA axial movement caused from the irradiation growth of guide thimbles. Depending on the up-lift force of a fuel assembly, from 2 to 4 leaves are assembled to be a set of a spring pack and it is fixed on the frame of the top end piece by screw. The spring can deflect so greatly during operati ....etc

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ac characteristics of op amp
PLEASE FIND ME POWERPIONT PRESENTATION SLIDE ON THIS TOPIC..THANK U ....etc

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Fuel Cell Plant Concept with Dynamic Characteristics of a Rotating Generator


Abstract Fuel cell plants will be powering future electrical
systems. Fuel cells normally generate direct current (DC) which
must be converted into Alternating Current (AC) for
transmission efficiency and for broader use by numerous loads of
different characteristics. An AC load consists of real power and
reactive power. The real power is generated by fuel cells.
However, the reactive power must be ....etc

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P-N JUNCTION DIODE
OBJECTIVE
1. describe the electrical properties of semiconductors and distinguish between p-type and n-type material;
2. explain the formation of a depletion layer at a p-n junction;
3. discuss the flow of current when the p-n junction diode is forward-biased or reverse-biased;
4. discuss the I-V characteristic of the p-n junction diode.
5. use the diode for half-wave rectification;
6. use the bridge rectifier (4 diodes) for full-wave rectification;
7. represent half-wave and full-wave ....etc

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