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Atomic oxygen is one of the most important environmental element impacting spacecraft performance in LEO space environment. Materials used on the surface of the spacecraft may be eroded away through the reaction of Atomic oxygen, which also causes damage to spacecraft components, seriously reducing the spacecraft's orbit life. In order to avoid over-protection, This paper proposes an atomic oxygen...
Micro-grid is a kind of new organization and structure of distributed energy, It integrates the advantages of distributed generation and weakens the adverse impact of the distributed generation on the grid. It makes the distributed power generation units, power grid and the end users to be connected as a whole, so the structure and configuration can be optimized easily. At the same time, the operation...
A duopoly two-stage gambling model is set, composed by enterprises in the developed and the developing countries, based on Bertrand competition, in order to clear the relationship between the IPR protection degree and the firm's market performance in non-heated price competition. The model supposes that products have the horizontal and vertical difference, the developed country enterprise carries...
Network public opinion (NPO) has two mechanism to spread: internal spreading mechanism is the internal opinion evolvement process, which explores the mechanism of how NPO evolves from chaotic individual opinion at the initial moment to consensus, polarization, or clusterization; external spreading mechanism is the process of the external influence pervasion, which focus on how NPO spread from a few...
By the virtual modeling technique of Pro/E, the 3D solid modeling was made for the key parts of the no-tillage planter, and virtual machine was assembled. The virtual machine was connected with the tractor model, and the direct of the rectilinear motion was set, then simulation motion of the no-tillage planter had been carried out. The curve was obtained about the displacement, velocity and acceleration...
The resolution is an important concept in radar. Based on the mathematic model of high resolution range profile (HRRP), this paper investigates the resolution of HRRP for two ideal point targets. Theoretical analyses indicate that two ideal point targets can always be resolved in HRRP once they are separated by a distance larger than 1.7∗c/(2B), where c is the speed of light and B is the bandwidth...
Matlab is the Math Works company business mathematics software, mainly applied in engineering design, calculation, the control signal processing and communication, image processing and signal detection, modeling design and analysis, etc. In the above application fields Matlab has powerful functions, in order to cultivate students' scientific spirit and practical ability and innovative consciousness,...
In this paper, we introduce the basic concepts in a Multi-Agent System (MAS), and propose an organization model based upon self-similar entities called holons, whose concept itself integrates both the agent aspect and organizational aspect of the MAS. By discarding the concept of role which is widely used in traditional methods of agent organization design, the model based on holon is more flexible...
APT model not only subverted the traditional theory of equilibrium pricing, but brought arbitrage pricing model into people's sight. But the key of APT is selection of factors. This paper used factor analysis attributed 10 factors to 4 common ones. Furthermore, it calculated the common factor expression and the linear regression model by data of 22 stocks from different fields in China's stock market,...
Students are the object of higher education services from marketing perspective. This paper investigates the satisfaction of higher education service from students by questionnaires based SERVQUAL model, analyzes the current quality of higher education service, and gives the suggestions of improving quality of higher education service.
Recycling business competition is typical situation in the closed-loop supply chain recovery process, which is obvious different from existing research hypotheses of closed-loop supply chain model study. Through considering to recovery price's sensitivity of consumer, this paper establishes a closed-loop supply chain recovery model based on competitive recovery business as an example of the retail...
This paper firstly elaborates the video transmission quality evaluation methods, and gives an overall scheme of video transmission simulation and quality evaluation system, then based on the open-source network simulation software NS-2, realizing the the entire system, finally, simulation experiments are provided to demonstrate the feasibility of the system, the result shows that the video transmission...
Considering the impact of the objective environment on the economic system, this article introduces gray elements to a dynamic input-output model which is based on variable structure control, and proposes the methods of determining the important parameters of the model. This model can reveal the relationship between propensity to consume, propensity to invest, the structure of consumption and investment,...
Bidding is a critical activity for most of contractors in face of intense competition. Thus, it is necessary to develop a practical bidding decision method. This paper presents a bidding decision model based on the analytical hierarchy process (AHP) method. As an illustration, a practical example of a construction company is cited, which demonstrates the application of this method and shows how this...
With the e-commerce market competition becoming more and more furious, it has become one of the focuses of companies that how to avoid customer churn and carry out customer retention. This paper applies many techniques of data mining to the research of customer churn, such as clustering analysis, decision tree, neural network, etc, establishes an e-commerce customer churn model and analyzes the factors...
Variational data assimilation system combines the useful observation information and model dynamic constraint and improves the optimal analysis using adjoint method in order to provide correct and high quality initial conditions for the meteorological numerical weather prediction model. The observation error is assumed Gaussian in traditional variational assimilation method. While the gross error...
All domestic and foreign literatures on the influence factors of Supplier Involvement in New Product Development (SINPD) are statistically analyzed by using Meta-analysis method in this paper, and 14 main influence factors of SINPD are identified and extracted from previous research results. After that, the paper analyzes the relative structure among the 14 main influence factors by using interpretive...
The establishment of the real option evaluation model enrolls uncertainties in line with the actual investment situations. The flexibility of investment decision-making is enhanced, which provides a broad space in the field of the investment analysis and evaluation. Mineral resources investment is a complex process and the application of real option model on this issue is intensively discussed. It...
Influence Diagrams (IDs) are not only used to display a graphical representation of the qualitative structure of models, but also to improve the communication among subject-matter experts, analyzers, and decisionmakers, by showing the frame of issue discussed from a high-level point of view. This thesis provided a curt overview of IDs and its evaluating, then introduced the extended Time-Sliced IDs...
The reputation of agents in the Multi-Agent System(MAS) has been focused on distributed artificial intelligence domain in recent years. Many efficient and flexible distributed reputation models have been developed. Nevertheless the heterogeneity of agents (including heterogeneous reputation models) becomes one of the obstacles for them to cooperate. Based on the Functional Ontology of Reputation (FORe)...
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