Environmental noise is a growing priority. Concerns about avi at ion noise have essentially halted airport expansion in large metropolitan areas, which has increased congestion, reduced safety margins, and impacted economic development. Community response to highway traffic noise is beginning to cre at e the same conflict between economic development, safety, and environmental concerns for ground transport at ion systems. Environmental noise is a complex systems problem with significant sociological, physiological, or policy elements as well as ....etc

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 Hi am Moumi
 i would like to get details on biology investigatory projects for class 12 on aids ..My friend Justin said biology investigatory projects for class 12 on aids will be available here and now i am living at ......... and i last studied in the college/school ......... and now am doing ....i need help on ......etc ....etc

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Pile driving at large construction sites produces formidable noise. Marine pile driving similarly can produce high sound pressures underwater”but these can be lethal to fish and can harass marine mammals, including those protected by federal law. This problem has contributed to costly construction delays on major bridge projects. To protect marine life, engineers have designed air bubble curtains to reduce underwater sounds. Air provides an effective barrier to sound propagating through water, because of the difference in density betwee ....etc

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With future threats emerging and the overall needs of the military changing, the armor mechanics community is always exploiting new materials and technologies to stay at the forefront of defense capabilities. Along these lines, this presentation will cover some of the research conducted at the Army Research Laboratory (ARL) and will be given in two parts. The first part will cover recent work completed on the ballistic testing of two silicon carbides with varying porosity distributions. The second part will go over a brief introduction of the w ....etc

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INTRODUCTION

STEGANOGRAPHY

Steganography is essentially a security measure for passing concealed messages, so as the message will not be detected. The goal of steganography is to hide the fact that the message exists. Steganography, which comes from the Greek language, meaning covered or secret writing, is the art of hiding information such as a message within images, audio, text and video. Steganography encompasses methods of transmitting secret messages through innocuous cover carriers in such a manner that the very existence of the hi ....etc

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what is the impact factor of archives of physics research? ....etc

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NTRU (Number Theory Research Unit)
Abstract
CRYPTOGRAPHY:
Cryptography is an algorithmic process of converting a plain text message to a cipher text message based on an algorithm that both the sender and receiver know, so that the cipher text message can be returned to its original, plain text form. In its cipher form, a message cannot be read by anyone other than the intended receiver. The act of converting a plain text message to its cipher text is called enciphering. Reversing that act is deciphering. Enciphering and ....etc

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Overview
Acquired immunodeficiency syndrome (AIDS) is the final and most serious stage of the disease caused by the human immunodeficiency virus. Symptoms begin when an HIV-positive person presents a CD4-cell (also called T cell, a type of immune cell) count below 200. AIDS happens concurrently with numerous opportunistic infections and tumors that are normally associated with the HIV infection.

The most common neurological complications of AIDS involve opportunistic infections of the brain such as progressive multifocal leucoencephalopathy ....etc

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The method of finding the location of moving Automatic Guided Vehicles (AGV) in pre-defined areas is by Distance Measurement Equipment (DME) which is based on ultrasound and triangulation technique. To reduce error,the ultrasound transmitter needs to be within the line of sight of the receiver. To get rid of this problem, powerful transmitters are used to ensure omni-directional transmission over large distances, which results in cone-shaped propagation..The new system shows that the vehicle can be more flexible, and angular restrictio ....etc

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Visual aids significantly improve the interest of a presentation. However, they must be relevant to what you want to say. A careless design or use of a slide can simply get in the way of the presentation. What you use depends on the type of talk you are giving.

Here are some possibilities:

*) Overhead projection transparencies (OHPs)

*) 35mm slides

*) Computer projection (Powerpoint, applications such as Excel, etc)

*) Video, and film,

*) Real objects - either handled from the speaker's bench or passed around

*) Flip~chart ....etc

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