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In this paper, we study the influence from the sentiment of regular tweets on retweeting. We propose a method to calculate the sentiment score for each tweet and each Twitter user. This method enables us to place the tweets and retweets into the same time period to explore the sentiment factor. We adopt the correlation coefficient between the sentiment scores of regular tweets and those of retweets...
Presented paper deals with a model of the electromagnetic sources localization in near-field sources region and verification of selected algorithms for correct modelling estimations. The localization is performed from cross-correlation matrix of planar sensors network signals and further cross-correlation matrix decomposition — Multiple Signal Classification (MUSIC). The whole mathematical model from...
To identify the performances of an aeration equipment, it is necessary to determine some parameters which helps to classify it from the hydraulic-technical-economic point of view. Current methods compare mechanical equipment to hydrodynamic parameters. The most important parameters are the oxygenation capacity, CO [kgO2/h], the economic coefficient, E [kgO2/kWh] and the specific power index, δ [W/m...
The Landau-Vlasov kinetic equation is generalized for dissipative randomly driven systems. The work is a development of the paper by Sliusarenko, Chechkin, and Slyusarenko (J. Math. Phys., 56, 043302, 2015) and is based on the Bogolyubov reduced description method. The kinetic equation is obtained up to the second order in small potential and dissipative interactions and small correlation functions...
A multilevel evaluation model integrating Triangular Fuzzy Numbers (TFNs), Analytical Hierarchical Process (AHP) and Grey Relational Analysis (GRA) was Proposed to evaluate Brownfield Redevelopment Projects (BRPs). Three schemes were proposed including 1: Housing Society, 2: Industrial Park 3: Commercial Development. Initially, primary indicators were identified through extensive literature review...
The article is devoted to the construction of a mathematical model and the algorithm for reducing a set of staganalytical correlated methods taking into account the computational complexity of the problem. The basic steganographic methods for the images spatial domain are described. Known steganalytical algorithms for the spatial domain are reviewed. It is shown that a significant number of steganalytical...
This paper investigates the performance of ejectors with a streamline structure. The parabola fitting is adopted to simulate the ejectors streamline structure and the effects of parabola fitting structure on ejectors are studied using the Computational Fluid Dynamics (CFD) technique. The contrast simulations of the parabola models and the original model are conducted in which the entrainment ratio...
It is difficult to establish accurate mathematical models to describe the range extender electric vehicles due to the non-stationary, non-linear and interconnection of the monitoring signal sources resulted from the massive moving parts and complex architecture in range-extender. And the support vector machine (SVM) and other algorithms would lead to the destruction of the natural structure and the...
Current industrial system develops more and more complex and intelligent, whose safety and reliability relies on fault diagnosis technology. In the age of big-data, data-driven fault diagnosis becomes the state of the art, and the demand for the diagnostic toolbox also increases. In this paper, theories of data-driven fault detection models, both static model and dynamic, are revealed. And then a...
In the distillation process, many important process variables are often difficult to be measured online. For example, the aviation kerosene is an important index of operation quality, but current methods cannot obtain the real-time value of the aviation kerosene efficiently. To solve this problem, a method of selecting the input variable based on partial least squares regression (PLS) is proposed...
We report empirical observations for both small and large scale fading in urban street canyons at 60 GHz. The observed (average) de-correlation distance of small scale fades was less than 4λ, with spatial X-factors > 25 dB. We observed a path-loss exponent close to Friis (1.9). The shape of the normalized auto-correlation function of shadow fades was well described by exponential terms whose amplitudes...
It is well known that given the (partial) correlation sequence from a 2nd order stationary Gaussian process, one can associate a (rational) positive real function with it. Indeed, a partial correlation sequence can be essentially be described by a lossless two-port, a passive loading of which provides all extensions of partial correlation sequence. While the above is true for one-dimensional processes...
Millimeter and terahertz waves offer novel solutions for nondestructive testing such as imaging and layer thickness measurements within dielectrics. For the thickness measurement of plastics, we use the frequency modulation continuous wave technique within fully electronic terahertz systems. The available modulation bandwidth inherently restricts the resolution to several millimeters. Our correlation...
Analysis of tolerances for the case when the parameter distribution law is determined by the statistic series is carried out. The correlation between parameters of components is taken into account. The model of output functions and domains of parameter distribution are formed at the point of coincidence with operability domain boundary. To simplify the procedure of tolerance design the approximation...
In this paper, asymmetric binary zero correlation zone (A-ZCZ) sequence sets are constructed. Based on zero correlation zone aperiodic complementary sequence (ZACS) sets obtained in [13], K binary ZCZ sequence sets are constructed, each set is a binary (2M2, M, M)-ZCZ and the K sets have a inter-set zero cross-correlation zone of length Z = M/K − 1, where K = pn. As a result, the K binary ZCZ sequence...
This paper describes an objective evaluation model for pencil still drawing images focused on the composition. The evaluation model consists of factor Fi which is defined as to cover the features value of the basic pencil still drawing image. Fi is also defined by considering a feature of subjective evaluation for the drawn pencil still drawing image. Our model approximate the features of the drawing...
The process of self-organization in a system of excited emitters studied by Dicke can be the basis of coherent emission generation without stimulated emission phenomena. Conventional analytic investigations in this field were concentrated on emitter subsystem behavior for obtaining the parameters of electromagnetic pulse. We propose the research into field characteristics in the process of pulse formation...
In statistical approaches such as statistical static timing analysis, the distribution of the maximum (or the minimum) of plural distributions is needed, and is computed by repeating a statistical maximum operation of two distributions (2Max operation). Since each distribution is represented by a linear combination of several explanatory random variables (RVs) so as to handle correlations efficiently,...
This article is devoted to the actual problem of medical equipment — the creation of a portable analyzer for monitoring blood biochemical parameters: glucose and cholesterol. A correlation analysis of the concentration of glucose and cholesterol in the blood with the parameters of arterial pressure (BP) and excess body mass index (BMI) was carried out using computer simulation. Imitative models are...
Nowadays the Massive MIMO system is one of the keys for obtaining high quality and reliability of data transmission. One of the main characteristics influencing the MIMO system performance is the channel (system) correlation matrix (CM). The proposed research assumes an exponential-type banded CM structure, which is bridging the gap between fully correlated and uncorrelated/weakly correlated (tridiagonal...
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