Vacuum electronics technology is both old and new. It will continue to be enabling technology for entire classes of high power high frequency amplifiers with the most demanding specification for use in military and commercial systems. The report will give brief introduction on various vacuum electronic amplifiers such as helix TWT, gyro amplifiers, multiple beam-amplifiers, power modules along the basics and the advance in the past few decades with different performance curves.

The advantages and the future of these are mentioned in last pa ....etc

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need ppt and document for electronic warfare in 21st century ....etc

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Abstract;
In order to examine the validity of model at organic/metal interfaces, the position of the vacuum level of N,N'-bis(3-methylphenyl)-N,N'-diphenyl--4,4'-diamine (TPD) film formed on various metal substrates (Au, Cu, Ag, Mg and Ca) was measured as a function of the film-thickness by Kelvin probe method in ultrahigh vacuum (UHV). TPD is a typical hole-injecting material for organic electroluminescent devices. At all the interfaces, sharp shifts of the vacuum level were observed within 1 nm thickness. Further deposition of ....etc

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THE NRL MITE AIR VEHICLE

ABSTRACT
Micro Air Vehicles (MAVs) offer the promise of affordably expendable, covert sensor platforms for a range of close-in situational awareness activities. Since 1996, the US Naval Research Laboratory (NRL) has been developing technologies that will enable Navy-relevant missions with the smallest practical MAVs. This effort includes the development and integration of sensors, avionics, and advanced intelligent autopilots for fli ....etc

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Indian Geography in the 21st Century



VIEWS ON THE BOOK
Past intellectual trajectories and knowledge productions require both, a
sense of historical embeddedness of the discipline and a constant
questioning and reassessing the constructs therein. Agendas and visions
have to be continuously questioned and changed, reconfigured and
renegotiated and the onus rests primarily on the younger generation of the
scholars. The present book is an important contribution towards this
....etc

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THE 21ST CENTURY SPACE SHUTTLE


Tomorrow s Shuttle:Cutting Risks in Half by 2005

Enhancements now under development could double the Shuttle's
safety by 2005: New sensors and computer power in the main engines
will see trouble coming a split second before it can do harm, allowing
a safe engine shut down. A new engine nozzle will eliminate the need
for hundreds of welds and potential leaks

Solid Rockets and External Tank Upgrades

Future improvements for the sol ....etc

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FUEL CELL CONCEPT

A fuel cell is a practical method of achieving a near reversible chemical reaction in which there is a conversion of chemical energy into electrical energy without even the intermediate step of conversion into random molecular energy (i.e. sensible internal energy). Thus whereas the harmonic and thermoelectric forms of direct converter are essentially heat engines and subject to the Carnot limitation on efficiency, the fuel cell is not. It was thought of that if such a device with hydrocarbon fuels or cheap derivativ ....etc

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Managing the Human Resource in the 21st Century


Introduction

This study guide provides an overview of the most important topics and current debates covered in Human
Resource Management (HRM) field at undergraduate level. Its aim is to help students in their
understanding of what HRM is, how it functions in organizational settings, why people are important as
organizational resources and how this resource can be effectively managed in the 21st Century.
The guide concentrates on ....etc

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Hello sir,
I am student of NIE pursuing electronics and communication engineering . I have completed my 5th sem I am interested in doing project in bsnl as intern. Please kindly do the needfull.

Thanking you,
Yours faithfully
Gagana.A.R. ....etc

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Crystalline-Silicon Solar Cells for the 21st Century


ABSTRACT
The worldwide market share for crystalline-silicon solar cells has
increased steadily in the last 10 years. In 1998, about 87% of the
photovoltaic modules shipped worldwide are based on crystalline
silicon. This dominance will likely continue into at least the first few
years of the 21st century. The long-term growth of crystalline-silicon
solar cells will depend on the development of low-cost polysilicon
feedstoc ....etc

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