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Non-governmental organizations (NGOs) make significant contributions to diverse areas. Similar to for-profits they need to manage their knowledge, but often lack resources for this. Social software may give a “new hope” for knowledge management in NGOs particularly by implementing social knowledge environments (SKEs). Since majority of international NGOs have a website, is it possible to use it to...
This paper discusses the role of safety, availability, dependability of Internet of Things (IoT) data services dedicated to the monitoring and control of objects in the physical world. These services are designed to be available to devices and users on request at any time and at any location. The Internet of Things differs from today's global Internet in a number of ways. For instance, the networks...
In this paper PV (photovoltaic) controller system and method of controlling of the buck and boost battery charger is given. The controller is mainly designed to charge the photovoltaic batteries in the mode of preserving the constant charging current. The control system is based on the “fuzzy logic” technique. The simulation results are presented as time waveforms, mainly. Finally, one suggested future...
In this paper we study the problem of key phrase extraction from short texts written in Russian. As texts we consider messages posted on Internet car forums related to the purchase or repair of cars. The main assumption made is: the construction of lists of stop words for key phrase extraction can be effective if performed on the basis of a small, expert-marked collection. The results show that even...
The article is devoted to the development of the technical vision system, which is used to control the operation of the harvesting unit of robot for gathering berries. The authors offer technical and software solutions to simplify the maintenance of the robot. Special attention is paid to methods of recognition of wild plants under various external conditions and disturbances.
The determining problem of several fracton mixture srtucture of materials grinding in the gas jet mill is considered. The problem is solved by comparing the standard deviation of the standart power spectral density of acoustics signals of individual fractions and of the mixture ones.
This paper surveys recent publications (2008–2017) on using social media data to study public health. The survey describes the main topics being discussed in forums and presents short information about methods and tools used for analysis health social media. We put especial attention on adverse drug reaction detection problem (ADR).
The library remote information services of higher educational establishments of America are analysed. The study is based on benchmarking and weights of alternatives methods that allow to identify the group of library leaders in providing quality information services.
The problem of image enhancement for low-contrast images is considered. The histogram-based method of automatic contrast enhancement on the basis of the analyzing of contrast distribution at the boundaries of low-contrast image elements (objects and background) using the various definitions of contrast kernels is proposed. The research of the effectiveness of the proposed and the well-known histogram-based...
The basic indicators of the life cycle of technology were analyzed and the generalized system for the evaluation of the life cycle phase is allocated. Indicators are considered as properties that technology must have to fit a certain stage of its existence. The existing approaches of technology development analysis were studied. The generalized classification, which is a list of indexes for the proper...
Multilevel system architecture of energy efficiency management in the region is developed in this work. The architecture model consists of three levels, namely, level of data collection and management of executive mechanisms, level of control and management of technological process, and level of operator control and formation of administrative decisions. Hardware and software of each hierarchical...
The article discusses the basic concepts and approaches to assessing software quality. Based on previous research in this area is formulated as recommendations for software that regulate based methods, processes and procedures used for software development.
This article presents an idea that any prime number can be obtained as the sum or difference between another prime and the number, which is the power of two, for example: 17 = 64 − 47. For testing this assertion and other similar hypothesis we used the PROLOG-like language PR (version 3). The semantics of combinatorial-oriented language for solving combinatorial tasks is discussed.
The paper substantiates the concept of building a three-phase model of the electric arc furnace in the instantaneous coordinates. The computer Simulink model of the electric mode of the electric arc furnace was developed. The results of testing the developed model are presented, the analysis of which shows that the required precision of the match between the experimental and simulated processes of...
The solution of the problem of construction of generalized model of production system optimal development is considered. Basis of the model — Bolza variational problem with integrated criterion of the first kind. Solution of the problem by numerical method is based on the method of optimal aggregation of “production, development” structures by simulation method of Hamilton function determination and...
Modern semiconductor chips offer a FPGA, A Hard Microcontroller and a programmable Analog circuitry all integrated on a single chip, which gives the system designer a full featured, easy-to-use design and development platform where all the units are programmable and under full control of the designer, Combining this state of the art silicon chip with a Real Time Operating Systems (RTOS) gives an Engineer...
The peculiarities of formation criteria, which provide adequate description of images was considered. The feature of vector-rotor functioning and invariance in special points and segment were investigated. It was received the algebraical expressions for determination of step vector as under direct action of rotor. The obtained results of modeling and investigation of values coefficients of compression...
Forecasting the returns of stock markets is gaining importance nowadays in finance. For this aim, in the last decade, Artificial Neural Networks (ANN) have been widely used to forecast stock market movements. In Baltic countries, artificial neural networks are not commonly used in predicting financial failures. This study aims using artificial neural networks to predict OMX Baltic Benchmark GI (OMXBBGI)...
The ecosystem model of surface water quality in the river basin was formalized on the basis of the theory of neural networks. The neural network is trained based on the observation data. Upon that the methods of environmental assessment and suitability of water for irrigation as well as for drinking needs can be used for the neural networking. The developed ecosystem model enables to improve significantly...
Analytic and experimental averaging over random matrices for the error of the true signal recovery is carried out for the method of solving the discrete ill-posed problems on the basis of random projection.
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