issue 9-10

20140910-05
Network voltage distortion by arc furnace and its mitigation
Sergey E. Ryvkin, Danil A. Drozhzhin

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Electric arc furnace (EAF) is the most dangerous type of load for power systems. It causes different kinds of distortion due to its frequently variable character. Nowadays there are different types of arc furnaces. This article ...  read more

20140910-04
Sensitivity investigations of second-order bandpass/bandstop filter sections
Maria Nenova

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Three recursive tunable biquadratic sections are studied and compared in this paper. The transfer function sensitivities and the impact of the quantization process of the multiplier coefficients on the behavior of the structures ...  read more

20140910-03
Resource structure for smart metering systems supporting prepaid functionality
Ivaylo I. Atanasov

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Smart metering is one of the main application areas of Machine-to-Machine communications (M2M). Smart meters using M2M can automatically collect and send data about energy supply and usage for monitoring and billing by utilities ...  read more

20140910-02
Design and investigations of approximately linear phase Hilbert transformers
Kamelia Nikolova

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In this work a new design procedure of approximately linear phase (ALP) digital Hilbert transformers (HT) is proposed. First, the possible positions of the transfer function (TF) poles of such HTs realizations are studied ...  read more

20140910-01
Approaching risk management in IT by implementing it in ITIL
Mario Ivanov, Biser Stefanov

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The aim of this article is to suggest a way for adopting a strengthened risk management in the ITIL (Information Technology Infrastructure Library) framework which will be based on specific guidelines without changing the ...  read more

20170910-07
Bulgaria national roadmap for research infrastructure 2017-2023 Appendix №5: Profile of the RI in the national roadmap in the republic of Bulgaria
Ministry of Education and Science, Republic of Bulgaria

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National interdisciplinary research e-Infrastructure for resources and technologies for the Bulgarian language and cultural heritage, integrated within the European infrastructures CLARIN

Description of infrastructure:

 ...  read more

20170910-06
National strategy for development of scientific research in the republic of Bulgaria 2017 – 2030 (Better science for better Bulgaria). 4. Policies, actions and measures for their implementation
Ministry of Education and Science, Republic of Bulgaria

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Contents

4. Policies, actions and measures for their implementation.

4.1. Horizontal policy for adequate and effective funding

4.2. Horizontal policy for legislative changes

4.3. Policy for human potential development

 ...  read more

20170910-05
From electrica to invariant automatica (Or how to use the knowledge about Theory of electricity for enter into Theory of invariant automatic control). Part two: Electromechanical dualism. Universality of energetic equations.
Milan Stankov

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От електрика към инвариантна автоматика (или как да използваме познанията си по „Теоретична eлектротехника“ за да вникнем ...  read more

20170910-04
Best practices for designing user experience for Internet of Things and virtual reality
Elena Shoikova, Anatoly Peshev

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This paper is focused on the principles of designing user experience (UX) for Internet of Things (loT) and virtual reality (VR) and creating effective user interfaces(UI) that incorporate wearable technology and rapid prototyping ...  read more

20170910-03
Plasma sterilization – special features and new approaches in medical applications
Kiril Ivanov

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An overview of the process of sterilization and disinfection is described in this article. Special attention is turn to the currently used technologies, their advantages and disadvantages. Another subject of the topic is the ...  read more