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With spatial regression analysis, the cause of the hemorrhagic fever with renal syndrome (HFRS) is detected in China in 2008. The results showed that: the incidence of HFRS is influenced by six factors: latitude, longitude of regional centers, the proportion of settlement place, the proportion of grassland, average elevation, and the average precipitation in October and November. Among these factors,...
With the increase of residents' incomes, urban residents' domestic consumption rises significantly and the proportion of consumption in the whole society also increases day by day. On the basis of analyzing the influence factors of urban residents' domestic consumption, the article takes Yantai as an example and collects the data from 2001 to 2008. The article chooses urban residents' disposable income...
Within this paper, the modality of vehicle frame is analyzed by finite element software of ALGOR, and carrying out the first 10 steps natural frequency resonance and vibration model. Using mode of two-degree-of-freedom vehicle vibration builds system's movement differential equation and simulates the frame's vibration by Simulink module of Matlab. Then make a dynamic response simulation for vehicle...
With SES simulation, based on the reduced scale model experiment, the influencing significance degree of the vehicle length, the train speed and the blocking ratio of the tunnel and the train are analyzed In the orthogonal test, the research objects aim at the average air volume, the velocity and the temperature of the units such as the tunnel, the platform, the stairs, the hall and the entrances...
The Unified Modeling Language (UML) provides a graphical notation to express the design of object-oriented software systems and has become the de facto industry standard for software design. However UML lacks precise semantics and is semi-formal. Formal specification languages are intended to provide precise and complete models for proposed software systems. Many researchers have done a lot of work...
We investigate optimal rekeying interval problem in batch rekeying. A Markov model is developed for batch rekeying process. The model is then used to analyze the relationship between the rekeying interval and the batch rekeying process parameters, and a formula of the rekeying interval is presented. Simulation results show that rekeying interval decrease with the increasing rekeying rate; it increase...
A reasonable strategy is the key to control stocks in the random inventory system. Yet it is difficulty to design such strategy by analytical method because of the randomness of variables and complex and nonlinear relationship among them. This paper provides a random inventory model with no filling the missing. The model generates the random variables subjected to the distribution of requirement and...
Based on Dabholkar's service quality model about retailing, evaluation model of outlets' service quality was established. Using Structural Equation Model (SEM), after data processing by data analysis software SPSS13.0 and model analysis software AMOS7.0, the rationality and applicability of the model was good to further analyzed. The model of Physical Aspects, Reliability, Personal Interaction, Problem...
Based on the motion characteristics of double half-revolution mechanism, a new-style wheel-legged lunar rover was proposed. In order to evaluate its maneuvering performance, the performance experiment of single wheel-legged mechanism is needed. To simulate the loading conditions of single wheel-legged mechanism when the lunar rover is walking in flat ground, climbing up a slope or walking sideways...
Based on the fairness and benefits of the opportunity to accept higher education, tuition should be paid. The average cost of higher education and the ability of tuition paid which are determined by the average income are two fundamental basics for making the standard of tuition. In order to research the standard of tuition, the paper focuses on two issues: What is the acceptable range of tuition...
Based on the mathematical model of the Input-output, energy and environmental efficiency models for iron and steel enterprises had been set up and used for analyzing energy consumption and environmental load. Models clearly show the various factors affecting on energy and environmental efficiency. Further analysis showed that the use of residual heat and energy power generation technology, such as...
A temporal factor analysis (TFA) model which can describe both the spatial structure and temporal dependency of high range resolution profiles (HRRP) has been proposed for radar HRRP sequence recognition. Variational Bayes method and Bayesian classifier are adopted for model learning and classification task, respectively. The favorable results based on measured data show the effectiveness of this...
The obstacle-climbing performance on uneven terrain was analyzed according to the characteristics of the lunar rover based on double-half-revolution mechanism. Because the obstacle-climbing model of uneven terrain was relatively complicated and the numbers of independent equation were less than those of unknown variables, a new evaluation index of the obstacle-climbing capability was presented. Pointed...
Many large enterprises are establishing high-density logistics network points to improve customer satisfaction. From the point of logistics efficiency increases, it is an effective method. But it also results in repeated construction. To avoid increasing logistics cost and wasting social resources, a method based on Self-Organizing Feature Map and Baumol-Wolfe model is used. Compared to general location...
Dataflow techniques have been widely applied to test the object-oriented software, but the existing techniques mainly care how to arrange method sequence to test, not paying attention to how to generate test data automatically. Although the existing random test data generators can create test data automatically, yet information about the test requirement is not incorporated into the generation process,...
After reviewing the literature and methodology-related issues within the field of product family design, a deficiency in the current design and development of product family is pointed out. The concept of hierarchical associated design is proposed in this article, according to the deficiency, and the methods and models for realizing the notion above are described. A two-dimensional analytical model...
Back-propagation neural network model was developed to predict the coal and gas outburst. After trained, the artificial neural network model was used to predict the coal and gas outburst of several samples. Moreover, ANN model was also used to analyse the quantitative effects of influencing factors on the coal and gas outburst. The prediction performance of ANN model is satisfactory. The prediction...
The purpose of this study is to propose a novel algorithm with grey measure for scoring stroke order of Chinese character handwriting in a computer-based assessment system. The learning of stroke order is very important for a fixed stroke handwriting character system therefore this study based on the theory of ??five indexing system of Chinese characters?? and combine the features of strokes develops...
Cross-layer optimization has been recently proposed for improving the performance of real-time video transmission over 802.11 WLAN. In this paper, an improved IEEE 802.11 WLAN analytical model under unsaturated traffic conditions was proposed. It adapts Distributed Coordination Function (DCF) models to handle all the states. Two special states were added for this model, one is the idle state, which...
Macro-economic system is a multi-factor, multi-level, multi-aim typical grey system possessed of indefinite. It's running process is a grey dynamic one composed of many relations of many complex structures and interlaced functions. By using the grey systematic theory model, this paper studies two major problems in China's macro-economic system during the reform and opening up. Firstly, it obtains...
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