Applied Mechanics and Materials Vols. 198-199

Abstract: To meet the need of deploying decision, co-operating decision, calculating the intercepting probability of target and realizing the simulation of firing in air-defense, we established the Dynamic Colored Petri Net, DCPN model, to solve the questions above. The model is definitely intuitionistic, convenient to realize in computer and clear to understand.

Abstract: Part-of-Speech Tagging is the fundamental problems in natural language processing .The paper introduces the representation of the Hidden Markov Model (HMM) and the needs to solve the problem, and then discusses the parameter estimation method of the HMM model, and research on basic principles of Part-of Speech Tagging using Viterbi algorithm.

Abstract: This design of the anti-mine acoustic countermeasure simulation system based on HLA was proposed for the requirement of anti-mine combat simulation. Following the technique frame of HLA, the composition and characteristic of the system were analyzed, and the general framework of acoustic countermeasure simulation system was given. The implementation of federates was explained by describing the framework of federation, flow chart and FOM/SOM of federation. And the problem should be paid attention to was proposed at last. The simulation system laid the foundation for the acoustic magnetic combined countermeasure system.

Abstract: The vehicle kilometers traveled (VKT) is an important factor need to be considered in urban freight transport or logistics planning. At present, some quantitative models have been constructed to estimate the VKT, and study also indicates that the time window of vehicle working hours have great effects on the length of urban distribution trips. But there is no VKT estimate models include the window time factor until now. So we introduced a two dimensional orders density: time dimension and space dimension. Then the density is substituted into the Figliozzi’s model, and after a series mathematic derivation, we get a new VKT estimate model considered the window time of vehicle, which is closer to reality station.

Abstract: This paper uses the information on the Xijiang floating production storage and offloading mooring system coupled with dynamic analysis of the system to generate scenarios for the most likely causes of the damage to the wires and if this is likely to result in further progressive damage of the mooring system. The modeling reflects the fundamentals of the Xijiang FPSO mooring system and can be used to further investigate potential causes for the mooring leg damage. The mooring dynamic analysis has been used to investigate the indicative behavior of the mooring lines under various conditions when BTM connected. The model has been used to investigate the tensions, bending moments and bending radiuses close to the lower socket. However the models have been checked to determine that they produce results which are of the correct order for the mooring system.

Abstract: Comprehensive planning statistics is a significant economic management activity and plays an important role in comprehensive planning management, which directly affects the production, construction, development and economic benefit of power grid. This paper presents the current situation of comprehensive planning statistics in Electric Power Corporation, defines the index model, and elaborates index statistics and analytical methods in terms of demands of the business statistics. Then it proposes index model for comprehensive planning statistics of power grid.

Abstract: This paper, considering the lack of empirical analysis on price risk of inventory based on large-sample, introduces factor analysis method, multiple regression method and SPSS 17.0 to make an empirical analysis on hot-rolled coil price forecasting model by analyzing the characteristics of its price fluctuation. The results show that there is small difference between forecast result and the actual one and that this forecast method is feasible.

Abstract: Recently, in several articles, scholar Huang Yang Shan analyzed the method of calculating the carry capacity of scenic area, and pointed out the limitation of traditional method based on the turnover. Then he deduced an improved model. But in his studies there is no comparison analysis to the difference of the optimal capacity value of the models in different conditions, and his improved model still has some limitation. Therefore, this paper first presents a new tourism scenic capacity calculation model based on production line, then analyses the balance of the attraction time and the attraction capacity of the scenic depot, which is the important fact influencing the volume of the carry capacity. And then, we compared our new model with the traditional ones in different condition. The results show that the new model based on tourism production line is suitable for wider scope, and is more reasonable.

Abstract: Using five kinds of Copula functions to investigate the changes of correlations among soybean futures in Tokyo Grain Exchange, Chicago Board of Trade and Dalian Commodity Exchange market before and after the financial crisis caused by American subprime mortgage, this paper verifies the existence of contagion effect of this crisis in the international soybean futures markets.

Abstract: This paper investigates the model checking issue of multirate hybrid systems. To this end, multirate automata are used to represent the possible behavior of multirate hybrid systems, and a dense timed interval temporal logic (DTITL) is defined to describe the desirable property. To check whether a multirate automaton satisfies a DTITL formula, a corresponding region automaton and a propositional interval temporal logic (PITL) formula are constructed. After each vertex of the region automaton being labeled with propositions appearing in the corresponding PITL formula, the model checking problem for mutirate hybrid systems is reduced to the same issue for PITL, which can be solved readily.