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The PADME charged particle detector system aims to detect positrons and electrons with efficiency better than 99 % and time resolution below 1 ns. The system hosts about 200 readout electronics channels whose operation has to be verified and commissioned. A custom based test system allowing performing qualitative check of the detector and the front-end electronics has been developed. The initial tests...
Our work focuses on the problem of optimizing a cascade of three small hydro power plants. The optimization is based on deciding how much electricity to produce dependent on the day-ahead hourly electricity prices. The problem is reduced to controlling the water volumes in the cascade's reservoirs. We examine two approaches — linear programming based on Matlab's Simplex method (the Linprog function)...
We introduce a number of mathematical models for the management of an electrical power system in the presence of renewable generation. We also study the impact of power systems of neighbouring countries on the grid.
This paper proposes and presents the structure and the functionality of new Virtual instruments developed for teletraffic system performance evaluation based on LABVIEW platform. The LABVIEW design platform, is widely use today for creation of virtual instruments, ensuring the operation of automated information systems for collecting, analyzing and processing data in real time. The developed new Virtual...
In the communication systems, Adaptive Neuro-Fuzzy Interface Systems (ANFIS) are used for the detection of unauthorized user access and forecasting product demand for 3G and 4G mobile phones. The Paper proposes ANFIS for identification of quantity of servers in a teletraffic system. Combinations of teletraffic performance parameters are defined for synthesis of the structure of the neuro-fuzzy classifier...
In this paper various types of classifiers for quantitatively identify teletraffic service devices are proposed. The classification method “K — Nearest Neighbors With Defined Cityblock Metric Distance At Three Nearest Neighbors” is selected. A classifier structure is synthesized based on Adaptive Neuro-Fuzzy Interface Systems (ANFIS) in hybrid learning algorithm and Gaussian type membership function...
In the paper the application of Monte Carlo approach for random search algorithms to finding a pair of conjugated roots of a characteristic polynomial (ChP) is presented. The proposed technique is oriented only to ChPs with real coefficients. The search is produced on the basis of random numbers with uniform distribution in a rather narrow bounded region of the complex plane. Two search methods are...
The current stage of the world energy development is characterized by the creation of powerful territorial and integrated power systems. A gradual unification of the energy markets of different countries is currently going on within a free market: the configuration of networks has been changing, additional relations appear, new energy companies and unions are formed, a sector of renewable sources...
The current stage of the world energy development is characterized by the creation of powerful territorial and integrated power systems. A gradual unification of the energy markets of different countries is currently going on within a free market: the configuration of networks has been changing, additional relations appear, new energy companies and unions are formed, a sector of renewable sources...
The configuration of the electrical systems should be often changed in terms of market relations. Therefore, an actual necessity of an express evaluation of static stability of power systems appears. Criteria such as “Hurwitz”, “Rauss” are very cumbersome in use. Not only modification of the existing methods are examined and discussed in the paper, but also new ways of getting the evaluation of static...
Under the current conditions of electricity market liberalization, it is often necessary to rapidly perform considerable changes in the power flows of cross-border lines or between isolated subsystems inside the country. For this purpose, in most cases, it is possible to use a simple connection / disconnection of a connection, which leads to a change in the topology of two subsystems. In such a situation...
The algorithm proposed in the paper allows easily complete functional reduction of power system's topology under consideration, which is an important moment for the quite a number of researches, including also the analysis of transient process behavior. In the algorithm basis is the methodology of the elimination of optional values of the load nodes represented as static and dynamic characteristics...
This study tracks the global tendency of the heart rate variability (HRV) profile over five ventilation modes, aiming to find evidences on the hypothesis that patients who failed during the weaning process manifest important differences in the autonomic nervous system activity. This preliminary study enrols 17 patients (7 successful (S), 10 failure (F)) who underwent weaning with AVEA ventilator....
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