University of Library Studies and Information Technologies

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Sofia, Bulgaria
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Todorova T.,University of Library Studies and Information Technologies | Ignatova E.,University of Library Studies and Information Technologies | Peteva I.,University of Library Studies and Information Technologies
Communications in Computer and Information Science | Year: 2016

In 2013, University of Library Studies and Information Technologies (ULSIT) participated in an international survey ‘Information Behaviours and Information Literacy Skills of LIS Students’. In this paper we will use only selected results from two questions, aimed at obtaining information on student learning skills and study practices when completing course-related assignments as well as about their motivation of learning and expression in an academic environment. The findings showed positive and negative tendencies. In response, we prepared an Action plan for improving the learning practices and motivation of LIS students. The core of the Action plan is the new design continuing training program based on the integration between academic education, the university library, and the LibLab (Laboratory of Library Technologies, Communications and Informing). We suggest setting up a Virtual Information System for users, divided into two main modules - Electronic Register of Academic Assignments and Virtual Personal Workplace. © Springer International Publishing AG 2016.


Borissova D.,Bulgarian Academy of Science | Mustakerov I.,University of Library Studies and Information Technologies
Cybernetics and Information Technologies | Year: 2017

A two-stage placement algorithm with multi-objective optimization and group decision making is proposed. The first stage aims to determine a set of design alternatives for objects placement by multi-objective combinatorial optimization. The second stage relies on business intelligence via group decision-making based on solution of optimization task to make a choice of the most suitable alternative. The design alternatives are determined by means of weighted sum and lexicographic methods. The group decision making is used to evaluate determined design alternatives toward the design parameters. The described algorithm is used for wind farm layout optimization problem. The results of numerical testing demonstrate the applicability of the proposed algorithm.


Zagorov V.,University of Library Studies and Information Technologies
Publishing Research Quarterly | Year: 2017

Bulgarian book publishing starts developing as commercial system as early as the second half of nineteenth century. With the increasing of competition after the Liberation of Bulgaria in 1878, as main problem the lack of texts for publishing emerges. The Bulgarian literature was still too young to provide texts for the publishers with the required quality and quantity. That’s why the publisher’s main goal remains the translation of popular (in any sense of meaning) foreign authors. In relation with this policy two main problems emerged—the lack of translators from the main European and World languages and appearance of many intellectuals who pretended to have good Russian language skills. This resulted in Russian book editions of world literature being the main source for Bulgarian translations. The paper focuses on to the process of retransmission and republishing of texts from language to language and from place to place. Interesting conclusions are made on how the publishing market strategies affect readers and their perception of the most popular titles of world literature. The main thesis is that the language skills (or lack of skills) of the translator are important for the reader’s perception of the text but the publisher’s choice of foreign editions through the mediation of second country’s publishing system had critical importance for the perception of Bulgarian readers of classical and popular examples of Western literature. © 2017, Springer Science+Business Media New York.


Mustakerov I.,Bulgarian Academy of Science | Borissova D.,Bulgarian Academy of Science | Borissova D.,University of Library Studies and Information Technologies
Journal of E-Learning and Knowledge Society | Year: 2017

This paper describes a framework for development of e-learning system for computer programming. The proposed framework includes not only the necessary course materials and the corresponding tests and exercises, but also offers an integrated environment to test written programming codes. The described approach corresponds to recent trend in distance education by providing massive open online course for unlimited participation and accessible through the Internet. The modern capabilities of ICT and database are integrated to support the learning process in a user friendly environment. The functionality of the e-learning framework is composed of five basic modules for learning content, testing, exercises, questions and answers, and help module. The described framework is implemented in developed e-learning system for C programming language. The e-learning system was tested in real educational environment and was very well accepted both of students and teachers. The preliminary results show applicability of the system leading to improvement in the acquired knowledge and C programming skills. This was confirmed by decreasing the number of students failed on the C programming exam. © 2017, Italian e-Learning Association. All rights reserved.


Jotsov V.S.,University of Library Studies and Information Technologies
Proceedings of the 2013 IEEE 7th International Conference on Intelligent Data Acquisition and Advanced Computing Systems, IDAACS 2013 | Year: 2013

A set of advanced analytics methods is investigated aiming at easier and higher quality e-/m-learning or blended tutoring. Security systems (SS) have been considered as an example of difficult-to-learn area. The topic of the presented investigation are contemporary education threats that will lead to big problems in the nearest future. It is shown that today the prevention of such threats is almost impossible without applications of intelligent technologies. Even more, the contemporary education system should possess some features of intelligent technologies or smart systems and advanced analytics elements. Original results are presented on how to build more effective classical applications by using novel puzzle methods. It is shown that all the demonstrated advantages may be successfully combined with other known methods from e-learning, m-learning or other education fields. Also it is shown how the considered applications enhance the quality of teaching, improve the emotional connection between the teacher and students and hence serve their sustainable learning and development. It has been discussed that qualitative forms of education may not require the usage of expensive hardware © 2013 IEEE.


Behar V.,Institute of Information and Communication Technologies | Kabakchiev Chr.,Sofia University | Garvanov I.,University of Library Studies and Information Technologies
Proceedings International Radar Symposium | Year: 2012

In this paper a possible original method for rough classification of marine target, through estimation of the velocity and linear size of moving sea objects using Forward Scattering Radar (FSR) system is present. The target velocity and size are estimated by cross-correlation between instantaneous frequencies of the input signal and the predefined reference signal. The estimation algorithm is tested on the base of real experimental signal from the boat moving with a given velocity, that have been obtained by the team from Birmingham University using Forward Scattering Radar. © 2012 IEEE.


Panayotova G.S.,University of Library Studies and Information Technologies | Dimitrov G.P.,University of Library Studies and Information Technologies
Proceedings of the 13th International Symposium on Operational Research, SOR 2015 | Year: 2015

This paper briefly introduces an integrated framework for portfolio selection and implementation of the framework for Web-based information system. The structure of Web-based information system for optimization of portfolio is investigated. Portfolio optimization in MATLAB environment is given. The optimization programme created from the existing software packages uses single-period Mean-Variance Optimization model.


Jotsov V.S.,University of Library Studies and Information Technologies
Proceedings of the 6th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications, IDAACS'2011 | Year: 2011

A set of conflict resolution methods is investigated with the purpose to construct knowledge refinement and self-learning tools applicable in a wide range of security systems (SS). The introduction of ontologies simplifies the detection process and lowers the complexity of the machine learning procedures. Different conflict resolution ways lead to particular autonomous/intelligent applications in different types of SS. The proposed self-learning methods are combinable with other web/data mining, anomaly detection, statistical methods, and show new ways in the development of collective evolutionary systems. © 2011 IEEE.


Garvanov I.,University of Library Studies and Information Technologies
2013 Signal Processing Symposium, SPS 2013 | Year: 2013

In radars, the performance of signal detectors is seriously degraded by arrival of impulse noise that extremely worsens their detectability characteristics. There are many papers, in which different Constant False Alarm Rate (CFAR) detectors have been analyzed in the presence of randomly arriving impulse interference described as Bernoulli pulse sequences. In this paper, the randomly arriving impulse interference is mathematically described as Binominal pulse sequences. This model of impulse noise is used for numerical analysis of Excision Constant False Alarm Rate (EXC CFAR) pulse detector and EXC CFAR BI (binary integration) pulse train detector with Polar Hough transform. The detectability of detectors is expressed in terms of the detection probabilities and the Average Decision Threshold (ADT). The experimental results are obtained by numerical analysis in MATLAB environment. © 2013 IEEE.


Behar V.,Bulgarian Academy of Science | Kabakchiev C.,Sofia University | Garvanov I.,University of Library Studies and Information Technologies
Proceedings International Radar Symposium | Year: 2013

In this paper we consider two possible algorithms for the detection of marine targets using a Forward Scatter Radar (FSR) system. Contrary to traditional detection algorithms that process the input signal envelope, these algorithms perform the input signal phase. Before thresholding, the input signal phase is filtered and as a result the output signals are formed as values of local statistics of the signal phase calculated in the sliding window. In the case of large targets or fast moving targets, when the signal-to-noise ratio (SNR) is large enough, input signal phase samples are replaced by a local estimate of the signal phase variance calculated in the sliding window. In the case of small targets or slow moving targets when the SNR is relatively low, the input signal phase is filtered twice before thresholding. The first filter (Filter-1) removes the local average calculated in the sliding window from each sample of the input signal phase. The second filter (Filter-2) replaces the samples of the filtered signal by a local estimate of the variance calculated in the sliding window. © 2013 German Inst of Navigation.

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