Universiteto leidyba / University's Publishing
Recent Submissions
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The use of harmonic identification algorithms to air heat exchanger
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)The article analyses the possibilities of using continuous harmonic identification for real technological objects. Where parameters of an object are changed fast enough and the computing power of the microprocessor control ... -
Analysis of data pre-processing influence on intrusion detection using NSL-KDD dataset
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Data pre-processing for machine learning methods is key step for knowledge discovery process. Depending on nature of the data, pre-processing might take the majority time of data analysis. Correctly prepared data for ... -
Comparison of CMOS power amplifier topologies for a wideband Doherty architecture
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Two differential radio frequency (RF) power amplifier (PA) architectures are presented in this paper both of which can be used to implement a wideband Doherty PA. Classic PA architecture is compared to a SB (SB) PA in order ... -
On parameterization of cell colonies images: ART classifier approach
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Cell colonies counting is an important subset of cytometry research. That is why the article investigates possibility to use binary ART classifier for the flexible automatic parameterization of biological sample images. ... -
Effective background subtraction algorithm for food inspection using a low-cost near infrared camera
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Computer vision-based image analysis is one of the most widely used food quality tool in food industry. It allows to perform the non-contact and low-cost measurements of inspected object's surface and color. The aim of ... -
The phoneme set influence for Lithuanian speech commands recognition accuracy
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)The phoneme set influence for Lithuanian speech commands recognition accuracy is investigated. Four phoneme sets are discussed. LIEPA speech corpus for training of Acoustic Model is used. The phonetic representation of ... -
Enterprise architecture modeling based on cloud computing security ontology as a reference model
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)The recent growth of popularity of cloud computing services delivers various benefits in multiple fields of activity, including reduced resource costs due to optimized hardware setup, as well as improving mobility. However, ... -
Modeling of two-tier DDoS by combining different type of DDoS models
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Modeling of Distributed Denial of Service (DDoS) attacks is a multidimensional problem as different resources are used at the same time. Existing DDoS attacks models analyze usage of only one resource as most attack relay ... -
Voice based interface for route search system
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)In this paper we are presenting our approach of creating voice based interface for one of the leading Lithuania bus route search system - www.autobusubilietai.lt. We designed a hybrid speech recognition system which is ... -
Fast binary features for speaker recognition in embedded systems
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Due to the growth in popularity of low power embedded devices with integrated biometric data and algorithms for user verification; speaker recognition problem with limited resources becomes more and more of an interest. ... -
Selection of fractal dimension features for speech emotion classification
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Despite numerous studies during the last decade speech emotion recognition is still the task of limited success. Great efforts were made for extending emotional speech feature sets and selecting the most effective ones, ... -
A cloud software isolation and cross-platform portability methods
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Cloud computing is a rapidly emerging technology that provides elastic, automated and on demand infrastructure, platform and software services. The cloud computing service model supplies various compute resources such as ... -
Adaptive joint tracking of nonstationary system unknown parameters including the time delay
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)The problem of joint parameters and time delay estimation or their tracking by processing of input-output observations arises, when LTI dynamical system has an unknown time delay. It is known that a mean-square error ... -
Single sound source localization using multi-layer perceptron
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)A localization of single sound source is investigated in this paper. The aim of investigation was to propose a technique for single sound source localization based on sound level differences in microphone array. A rectangular ... -
An evaluation of hardware-software design for sound source localization based on SoC
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)The article presents an evaluation of sound source localization algorithm based on field-programmable gate array (FPGA) and ARM processor. The proposed architecture performs the computation of azimuth and elevation angles ... -
Hybrid rate control mechanisms in IEEE 802.11 networks
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Over the time while IEEE 802.11 was developed, rate adaption algorithms had their own development stage. Most of rate adaption algorithms are not standardized and there are no rules on how one should operate. Therefore, ... -
Design of multicore digitally controlled oscillator in 65 nm CMOS technology
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)This paper reports 2.37-5.94 GHz multicore CMOS LC Digitally-Controlled Oscillator (DCO) designed in 65 nm RF CMOS technology. The three cores of 6-bit switch capacitor array provides wide LC-DCO tuning range. With 1.8 V ... -
Detecting sense of presence changes in EEG spectrum during perception of immersive audiovisual content
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Quality of Experience (QoE) in multimedia is amply investigated in order to assess the overall acceptability of the content as perceived subjectively by the end user. QoE is usually quantified by self-evaluated subjective ... -
Review of self tuning methods for direct conversion transceivers
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Integrated circuit fabrication technological processes affect error of transceiver's components, thus aims to minimize such deviation. This paper analyzes modern wireless transceiver calibration methods: feedforward, ... -
Investigation of frequency response of pockels cells based on beta barium borate crystals
(2017 Open Conference of Electrical, Electronic and Information Sciences (eStream), April 27, 2017, Vilnius, Lithuania, 2017)Piezoelectric ringing effect in beta barium borate (BBO) Pockels cell crystals, which reduces the contrast ratio of cell, has been investigated. The experimental model for the measurement of the piezoelectric ringing impact ...
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