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With the rapid development of science and technology and the growing popularity of computer networks, the scale of network users is gradually expanding, and the behavior of network users is becoming more and more complicated. A large number of studies show that the user's actual interest is closely related to the browsing behavior on the web page. Through the user browsing behavior analysis can obtain...
This article presents the simulation and harmonic analysis of a charging station model developed in “Modeling and protection of electric vehicle charging station”, which was adapted with the electrical parameters of the distribution system of Cuenca city, with The purpose of quantifying the amount of harmonics that this type of stations can produce in the network. The simulation resulted, that the...
The present paper presents a serious game, built on Android tablets, through which students can test, in an attractive, disguised form, the mastering of some mathematical notions which are part of hydrological models for the contaminations of groundwater resources. Our game is based on an adventure story in which the regular game' levels are intertwined with mathematical' levels. Consequently, finishing...
The analysis performed in this paper starts from an EPANET model of the Tei-Colentina District water distribution system in Bucharest. The model was used in a previous study to assess the energy consumption of the pumping station. The present study is trying to assess the differences, with respect to energy consumption, between the previous demand driven EPANET model and a new pressure driven model,...
To study the impact on stability and security of the power grid that large-scale Photovoltaic (PV) generation systems integrated, the need for new models and simulation methods is increasing. Firstly, in this paper, a novel simplified phasor model is proposed based on the description of common detail model and averaged model for the PV generation system. The structure of the simplified phasor model...
This paper proposes a linear stochastic state space model for electrocardiogram signal processing and analysis. The model is obtained as a discretized version of Wiener process acceleration model. The model is combined with a fixed-lag Rauch-Tung-Striebel smoother to perform on-line signal denoising, feature extraction, and beat classification. The results indicate that the proposed approach outperforms...
This paper discusses how to enhance the ability of text modeling in Arabic during chat sessions. Hanini and Jabari et al. modeled the text in chat sessions, but there is still a problem when using Arabic, because the Arabic language is very difficult to comprehend, has complex derivative and many ambiguities. This paper enhanced the previous study and added MADAMIRA tool to analyze the Arabic text...
In this study, In this study, a graphical and mathematical model of wheat development phases are wanted to create. For this purpose, timely colored hybrid petri nets were used. A model including only developmental stages of the wheat as well as development under environmental conditions was established. The suitability of this model was tested with the developed software.
We consider efficient controls for swimming with multiple rigid legs at low Reynolds number. We derive equations governing the translation and rotation of a general class of multi-legged swimmers, and we formulate energy-efficient controls of symmetric swimmers as a problem in geometric control theory. We then focus on the case of symmetric swimmers with multi pairs of legs. In the framework of sub-Riemannian...
To study the mechanism of kindergarten teachers information technology use behavior, this article based on the task characters of early childhood teachers, constructed the kindergarten teachers' information technology use behavior model. With 385 kindergarten teachers as the research object, using self-made questionnaire to survey. the results show that: (1) the individual factors through the perceived...
In recent times, topic modeling approaches for adaptive language modeling have been extensively explored for Natural Language Processing applications such as machine translation, speech recognition etc. Language model is extremely fragile in adapting towards the required domain, so it needs to be channeled towards an area or a topic for producing optimal results. This paves the need to investigate...
Model inaccuracies or parameter uncertainties are unavoidable in the practical control systems, while the uncertain properties could be modeled and estimated by the grey system. Among many grey models, fractional grey model is recently proposed and popularly used in many model analysis and prediction problems. In this paper, the structure uncertainties and external disturbances are considered using...
We present a rumor propagation model considering rumor acceptability function and simulate rumor propagation on complex networks with Repast simulation platform in this paper. We introduce the structure and the main class library of Repast simulation platform. Then we build an efficient model based on the multi-agent modeling method. Through the model, we simulate the behavior of rumor propagation...
The real-time and accurate forecasting of expressway traffic is an important prerequisite for the development of reasonable traffic management control scheme, the reasonable choice of travel route and the effective prevention of traffic congestion. The current traffic data are mostly collected using a variety of monitoring equipment, but the data can only reflect a certain traffic flow and the cost...
Complex Cyber-Physical System (CPS) integrating computation, software, network and physic process is suited to be designed by multi-view models to describe different aspect respectively. Ensuring consistency relationships between multi-view models and system-level properties remains to be a main challenge to such methodology. This paper proposes a comprehensive and formal description and verification...
The idea of this paper is to show the power of modelling activities to analyze multidisciplinary phenomena and to bridge the gap between secondary and university mathematics. For that, we are using a methodology emerged from the anthropological theory of the didactic whose result is the design of a teaching device called study and research path. This device uses exhaustively the ICT like a facilitator...
A supply chain network consists of facilities located in dispersed geographical locations. This network structure can be optimized to minimize total cost or total inventory by deciding the order quantities and distribution of links connecting the facilities. However, bullwhip effect (i.e., amplification of order fluctuations) is an important performance metric for supply chains because as the order...
In this paper, the diffusion nonlinear modeling strategy based on time-space separation approach is proposed for contaminant concentration advection-diffusion process which described by partial differential equation with uncertain nonlinear distributed diffusion. The time-space separation approach is proposed to deal with the contaminant temporal-spatial distribution characteristics, which the spatiotemporal...
considers linguo-combinatorial modeling with the use of actual data from Petrostat (St. Petersburg State Statistics Service) aimed at supporting managerial decision-making when forecasting a short-term prospect (2–3 years), a medium-term prospect (4–5 years) and a long-term prospect (6–10 years) for certain aspects of the city development.
In these recent years, a new channel of tuition fee payment using Internet banking has been introduced to Indonesian students. However, based on obtained data field, payment method using Internet banking service has turned out to be not quite popular among the students. The development of this study is adapted from Chan and Lu [4] research model about Internet banking service adoption in Hong Kong...
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