Summary: This article analyzes the main methods for evaluating the quality of voice traffic in the network, the quality of the evaluation criteria of network traffic according to QoS and E-model. Comparison of subjective and objective methods of assessing the quality of the voice traffic. The research results were modeled and are illustrated in the example of the multi-network models. The influence of the technical characteristics of the network on the subjective assessment of the quality of voice traffic in the network. Based on studies conducted by the authors have shown that the QoS parameters have a significant influence on the quality of the voice traffic in the network
Key words: QoS, MOS, E-model, R-factor, Quality, network.
Summary: This paper describes the method of bankruptcy risk analysis using fuzzy-set approach and counterpropagation neural network.
Key words: bankruptcy, fuzzy logic, counterpropagation neural network.
Summary: This paper investigates logistic regression and scorecards usage for creation of the behavioral model for the bank’s customers.
Key words: logistic regression, scoring, marketing proposal.
Summary: This paper investigates R-Tree structure usage for “Predator” tracking algorithm optimizations.
Key words: tracking algorithms, on-line tracking.
Summary: Conducted research of texture recognition methods in context of images from drones.
Key words: multyfractal spectrum, filter, neural network.
Abstract: A method for approximating the current mass distribution of granular material in the apparatus of fluidized bed dehydration with highly heterogeneous systems.
Keywords: mass distribution, approximation, the correlation coefficient.
Summary: A comparison of the efficiency of different sentiment analysis algorithms (naive bayes classifier and SVM) was made using a set of twitter comments. A general conclusion is made concerning the effectiveness of these algorithms.
Key words: sentiment analysis, naive bayes classifier, twitter, SVM, bigrams.
Summary: The characteristics of NoSQL DBMS and their differences from the relational DBMS, advantages and disadvantages of each type of data models, and examples of their usage described.
Key Words: NoSQL, non-relational databases, computer science.
Summary: Application of Kalman filter for solving localization problem. Description of algorithm on example of robot with single sensor in one-dimensional space. Programmatic implementation of Kalman filter. In order to compare results of Kalman filter and direct measurements experiment was performed. Conclusions were made regarding advantages of Kalman filter application in localization problem.
Key words: localization problem, robotics, Kalman filter, normal distribution, dynamic systems.
Actual problems of modern science: Abstracts of VI International scientific-practical conference (St.Petersburg - Astana - Kyiv - Vienna, April 28, 2016)
Actual problems of modern science: Abstracts of VI International scientific-practical conference (St.Petersburg - Astana - Kyiv - Vienna, April 28, 2016)
Actual problems of modern science: Abstracts of VI International scientific-practical conference (St.Petersburg - Astana - Kyiv - Vienna, April 28, 2016)
Summary: creation of real estate market analysis system; research and modeling of neural networks to assess the value of real estate.
Key words: system analysis real estate market, real estate valuation, neural networks.
Abstract: A mathematical model of a continuous process of granule formation of humic-mineral composites with desired properties in a fluidized bed using a model of fuzzy sets using MatLab environment.
Keywords: Fluidization, granule, fertilizer, kinetics.
Summary: Investigated the scope and basic implementation of Big Data technologies and Internet of Things, their benefits.
Key words: Big Data, Internet of Things, Hadoop, sensors.
Summary: This article deals with the problems of target detection using optical - electronic surveillance systems in poor visibility. The features assess the efficiency of multichannel optoelectronic systems containing polarizing channel. Solves the problem of improving the quality of images received from different channels by means of integration. The new Quality images with additional channel polarized images based on modified assignment success rate TTP (targeting task performance)
Key words: multi-channel electro-optical observation systems, polarization characteristics, spectral channel, detection, image.
Summary: Application of the following three metaheuristic algorithms to Travelling Salesman Problem (TSP) were explored: Simulated Annealing (SA), Tabu Search (TS), and Ant Colony System (ACS). The performance of software implementation of these approaches was experimentally studied using four test instances of TSP with known optimal solutions. As a result of the experiment, features of solutions found in a set of trials by each algorithm in the same fixed amount of time were assessed. The implementation details of the algorithms and the parameters used for the experiment were thoroughly described. Optimization process was visualized for every algorithm. Conclusions were made regarding the effectiveness of studied algorithms for the different sizes of problem instances used in the experiment.
Key words: travelling salesman problem, metaheuristic optimization algorithms, simulated annealing algorithm, tabu search algorithm, ant colony system algorithm.
Summary: The paper presents the mathematical model of the process contact membrane distillation. The proposed simplified mathematical model of СMD , which takes into account the change in the temperature of the solution and the distillate channel along the membrane and the membrane module height . As well as describing the change in temperature of steam flow in the pores of the membrane. An algorithm for calculating mathematical model of contact membrane distillation.
Keywords: mathematical model, contact membrane distillation, heat transfer, mass transfer, distillate channel.
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
