Florin Enache

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The problem of secure information transmission over an unsecured medium is very important in the communication systems and especially in the military systems. Speech scrambling is one of the methods used to prevent unauthorized decryption of the message. In this paper three scrambling techniques are presented and their performances are analyzed. These(More)
The aim of sparse array antenna synthesis is to obtain a desired radiation pattern with a minimum number of antenna elements. In this paper, the antenna synthesis problem is approached in a different manner. Starting from a uniform linear antenna array radiation pattern, the maximum number of elements that can be removed, while maintaining a desired(More)
According to the pattern recognition theory, a very important stage into a classification chain is represented by the feature selection. Although in literature a lot of feature selection techniques are indicated, one of the most important methods as application area is focused on Sammon projection algorithm use. Consequently, in this paper an improved(More)
In this paper an original method for the synthesis of a planar sparse array antenna is presented. The aim is to obtain a planar sparse array antenna starting from a Dolph Chebyshev radiating elements feeding distribution and cancelling feeding for as large a number of elements as possible while maintaining the performances in terms of directivity(More)
AIM We observed the most vulnerable parts of the human body in traffic accidents. MATERIALS AND METHODS The study was made on the cases of death in Timis region in the last 3 years (2005-2007). Out of a total of 2314 forensic autopsies, 407 were consequences of traffic accidents. RESULTS In Romania, it is compulsory to perform the forensic autopsy on(More)
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