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The paper presented a data-centric, capability-focused and system engineering approach to facilitate the architecture modeling and computable experimentation of challenging SoS. Firstly, modeling the SoS architecture based on a set of architecture products and Activity-Based Methodology (ABM) using Object Process Methodology (OPM), which shows a system engineering thinking. Secondly, based on the...
Computer modeling is considered to be an effective tool to simulate water quality with the changing time and space in the pipeline network. This paper introduces a residual chlorine simulation method by building a hydraulic model of pipeline network peripherals, calculating water age, and finally building the water quality model for residual chlorine. The research conducted in the paper is based on...
Stochastic kriging (SK) has been studied as an effective metamodeling technique for approximating the mean response surface implied by a stochastic simulation. Until recently, it has only been applied to simulation experiments with continuous decision variables or factors. In this paper, we propose a new method called stochastic kriging with qualitative factors (SKQ) that extends stochastic kriging...
Usually classical statistics method based on general linear model makes activation tests for voxels in single subject. We suggest a method to analysis various heterogeneity measures based on fMRI data among teenage group with the same background. Simulations were performed to describe common and different comparisons and our efficient implementation makes this approach practical and more helpful for...
The neural networks have been widely applied to optimum calculation and solution of complicated problems. In particular, the evolutional learning neural network has better characteristic and higher precision than other neural networks. But the slow computational rate of evolutional learning and the local-optimum of the evolutional learning neural network seriously influence its application. In this...
In the optimization process of alternatives for military communications based on effectiveness, how to judge the best alternative is a difficult work. The robustness analysis method is put forward to solve the problem on the basis of Monte Carlo simulation, and the framework of this is established. Mainly include how to fit the Beta distribution of each criterion's value with known data; and how to...
According to the respective advantages of RBAC model and UCON model, Subject, Object, Role, Permission and Operation are all regarded as the instance of the class with attributes and methods on object-oriented programming, role-based access control model with the constraints of Temporal, spatial, attribute and workflow (TSAW-RBAC model) is proposed, the Observer Entity is introduced that assigns the...
By simplifying and limiting current circuit model of metro power supply, this paper firstly showed stray current production and its damage, then analyzed bilateral power supply system using resistor network theory, and constructed stray current analytical model of bilateral power supply, computer simulation in different conditions of stray current distribution was carried out, the results show that...
Model ontology representation is proposed to improve the standardization of model representation in model base system. There are model domain ontology, application ontology and ontology evolution in it. Model domain ontology ensures that the information of model is integrity and consistency, which is abstract of model information and relation on each other. Model application ontology is concretion...
This paper develops performance evaluation and competition strategy techniques in Olympics scenario. In the performance evaluation technique, the ranking methods based on the best and worst frontiers are used. In the competition strategy, a competition DEA method is presented to direct the competition opponents and intensity for each Olympics participant.
The ship manoeuvring simulator has been widely developed and application in many navigation academies, science and study organizations and maritime training centers etc with development of the navigation technology, computer applications, computer graphics etc. However, It has a lot of shortcoming in assessing skill of the navigators when they are manoeuvring the ship by the simulator. In order to...
The novelty method is used for analyses and diagnoses of product line. The virtual design and modeling method are introduced through the real case. In simulation environment, it showed that there were some bottle-neck processes because of defective manufacturing technology. After produce line rebuilt in simulation, the average manufacturing technology time was about 41.2s. The utility ratio of machines...
The development of computer processor has stepped into the era of multi-core, providing a good chance to spread the parallel discrete event simulation. The parallel programming model and synchronization problem during the parallelization of discrete event simulation on multi-core platform were discussed. A parallel discrete event simulator based on multi-core platform was designed and implemented...
The process of background subtraction is always a key step in surveillance. Currently, the mixture of Gaussians (MOG) works well in the background modeling and has been widely used in practice. In this paper, some new additional constrains are imposed on the updating process of statistics of Gaussian models. To reduce computational cost, the numbers of Gaussian models are selected dynamically based...
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