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Many systems exist without us knowing structural system models and require us to discover structural system models from system data. A major shortcoming of current statistical modeling and data mining techniques is their focus on building relations of variables that hold for all values of variables. This paper presents the new partial-value association discovery (PVAD) algorithm to discover relations...
One of the most important tools for studying fluid flow behavior in oil and gas reservoirs is reservoir simulation. It is constructed based on a comprehensive geological information. A comprehensive numerical reservoir model has tens of millions of grid blocks. Therefore, it becomes computationally expensive and time consuming to run the model for different reservoir simulation scenarios. There are...
Aiming at the identification difficulty of texture-rich veneer defect images, a new variation model based on coupling image texture-structure decomposition and edge extraction is proposed in this paper. Firstly, An advanced AAFC structure-texture decomposition model is obtained through extending the regular items of AAFC model; Secondly, using the semi-quadratic regularization method to obtain a new...
Studying precipitation and weather data using Artificial Intelligent (AI) and data mining techniques has been the subject of several research papers. In this paper, a dataset is built about Jordanian weather and precipitation related information. This information is gathered from local and web resources. A tool is built to parse all weather related information from different websites that store such...
Business intelligence may be defined as a set of mathematical models and analysis methodologies that systematically exploit the available data to retrieve information and knowledge useful in supporting complex decision-making processes. A business intelligence environment offers decision makers information and knowledge derived from data processing, through the application of mathematical models and...
Based on the electrical parameters of ordinary twisted pairs, this paper calculated the numerical inductance model parameters of three representative mine communication cables by using data fitting method, and verified the feasibility of the method by comparing the fitted values and reference values. According to the model, this paper got the characteristic curves of three kinds of mine communication...
C-regression models are known as very useful tools in many fields. Since now, many trials to construct c-regression models for data with uncertainty in independent and dependent variables have been done. However, there are few c-regression models for data with uncertainty in independent variables in comparison with dependent variables now. The reason is as follows. The models are constructed using...
Based on harnessing the Yellow River, a multi-nozzles pile extractor was developed. Multi-nozzles submerged jets of extracting pile component were simulated numerically by the RAN k-ε model and the Ansys software. The reasonable structure was attended and tested by experiment. The simulated numerically results showed that the simulated numerically method was an effective way which was used to study...
Filling missing value is main task of data-processing, at present Hot Deck Imputation is preferred. Defining the similar standard of Hot Deck Imputation objectively becomes an important prerequisite. The Cloud model combines ambiguity and randomness organically to fit the real world data objectively. first get the cloud models which present the raw no missing value, then to discrete the numeric value...
Banks and investment funds are increasingly basing their competitiveness on the quality of their quantitative technology, including programming techniques, analytical methods, and applications such as financial forecasting, option pricing, and risk management, which are all essential elements of the field of computational finance.
The compact finite difference schemes on non-uniform meshes and the Fourier spectral hybrid method are used to direct simulate the evolution of the coherent structures in a laminar boundary layer, and two inverse rotating models was tested to built initial conditions of coherent structures. Numerical results show, the maximum amplitude of the positive rotating model experience a liner growth and a...
This paper studies the recovery rates of the defaulted bond in a regime-switching model based on Mason's theory. Regard returns during default as a perpetual American call option which has a low face value and exercised according to the business condition by the creditor. We obtain the recovery rates of the defaulted bond by discussing the optimal stopping time of the American call option, which is...
Based on the SIRS model with the direct immunization on complex network, an improved SIRS epidemic model is proposed in this paper. The proposed model is built by considering the case that infective individuals enter into the removed or susceptible state when they are cured. By using the mean-field theory, an epidemic threshold of the model is obtained focusing on the improved model. The simulated...
Based on the large eddy simulation (LES) method, the gas-phase flow field in 90?? curved ducts with different inclination angle was numerically simulated. The results indicated that the gas-phase flow field in 90?? curved ducts with inclination angle was different from that without inclination angle. As the influence of inclination angle, the secondary flow was delayed and the circumfluence zone was...
Zadeh Absurdity will appear in applying D-S evidence theory to fuse highly conflicting evidence. To solve the problem, a novel information fusion model is presented. Firstly, through calculating evidence information capacity, the model pretreats evidence of containing overlapping focal element; Secondly, the model utilizes evidence distance function to gain every evidence creditable degree which is...
This paper deals with modeling and simulation of important part of a generating block within the frame of Flexible Energy System (FES), particularly furnace, evaporator, mixing header, pipeline, reheater/superheater and turbine. Mathematical model of a reheater/superheater is described in detail in order to demonstrate how the problem is solved and why Matlab & Simulink environment has been chosen,...
This paper introduces a new modeling framework for failure analysis (FA) of physical systems namely ??Rate cognitive maps??. The proposed cognitive map based framework provides a robust approach for identifying a large variety of possible failure modes in a dynamic environment through a new cognitive inference process. While this methodology allows the identification of possible failure modes at multiple...
In this paper we study the overhead introduced by secure functions in considering two models of non-repudiation protocols. The models are specified using the Markovian process algebra PEPA. The basic model suffers from the well known state space explosion problem when tackled using Markov chain analysis. Following previous study of performance modelling on security protocols, mean value analysis and...
As one of the candidates of the next generation non-volatile memory(NVM), phase change memory(PCM) has been paid more attention. However, there are still many open issues such as numerical simulation to study. Phase transition is a temperature based process, which can be simulated by temperature profile generated by the device simulator coupled with the phase transition model. In this work, a phase...
To deploy emergency resources timely and accurately is the core of emergency logistics research, and to study and develop the relevant intelligent decision supporting system is an effective approach to solving the problem. This paper introduces an intelligent decision supporting system of emergency resources deployment and elaborates on its structure, its reasoning mechanism based on emergency resources...
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