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The conversion of symbolic sequences into complex genomic signals allows using signal processing methods for the handling and analysis of nucleotide sequences. This methodology reveals surprizingâ€¦ (More)

- Lubomir V. Kolev, Simona Petrakieva
- 27th International Spring Seminar on Electronicsâ€¦
- 2004

This paper addresses the stability analysis of linear continuous systems under interval uncertainties. An interval generalization of the known Raus criterion is suggested to estimate the stability ofâ€¦ (More)

- NIKOLAY RADEV, Kantcho P. Ivanov, KALIN STANCHEV, Simona Petrakieva, Nikos E. Mastorakis, Valeri Mladenov
- 2007

An approach for reducing the effects of operational amplifiers finite dc gain A and offset voltage Vos in left-LUD SC ladder filters is proposed. The effectiveness of the proposed approach isâ€¦ (More)

- Simona Petrakieva, Zahari Ivanov
- 2017 15th International Conference on Electricalâ€¦
- 2017

In the present paper the values of the active resistance R<inf>b</inf> and the inductance L<inf>b</inf> of the electromagnetic ballast are determined analytically and by simulations with programâ€¦ (More)

The paper addresses the stability analysis of linear continuous systems under interval uncertainties. A new implementation of the interval Frazer-Duncan criterion is suggested to estimate theâ€¦ (More)

- Desislav Andreev, Simona Petrakieva, Ina Taralova
- 2017 12th International Conference for Internetâ€¦
- 2017

The aim of the paper is to reveal false names of accounts as a result of hackers attacks. The probability a given account to be either false or actual is calculated using methods for machine learningâ€¦ (More)

The paper addresses the stability margin assessment for linear circuits and systems under interval uncertainties. The original robust stability problem is initially transformed into an equivalentâ€¦ (More)

The paper addresses the stability analysis of linear continuous systems under interval uncertainties. This problem initially described by the characteristic polynomial is transformed into aâ€¦ (More)

The paper addresses the stability analysis of linear circuits and systems under interval parameter uncertainties. The problem is equivalent of estimating the eigenvalues of matrices, which elementsâ€¦ (More)

- Simona Petrakieva, Oleg Garasym, Ina Taralova
- The 9th International Conference for Internetâ€¦
- 2014

This paper deals with chaotic cryptosystem and observer-based chaotic synchronization of Lozi chaotic generator for secure information transmission. Increasing the size of the secret key has beenâ€¦ (More)