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According to rotary vibration at the end of the concrete pump truck boom, analysis of the boom rotary vibration mechanism is carried out. Rigid-flexible coupling dynamics model and vibration control co-simulation model of the boom system are established. The analysis of the dynamic model solution shows that the simulation rotation vibration displacement curves at the end of the boom are coincided...
This paper studies the order promising problems that frequently arise in EMS-OEM scenario with multiple demand classes. Demands and replenishment of inventory in different periods are assumed to be random variables and independent of one another. An order promising system is designed to maximize the expected net profit over the planning horizon by determining the fraction of the demand that is likely...
In this paper a region-based change detection approach for multi-temporal PolSAR images is proposed. The PolSAR images are first segmented into compact local regions in the same way, then Wishart mixture models are learned to model each local region. To generate difference (DC) map, statistical distribution differences measured by information theoretic divergence are calculated for corresponding local...
According to the research of access control technology, this paper proposed a novel security model to the classified removable storage medium control system. Firstly, we defined a suite of access control strategies among the computer system, users and the classified removable storage medium. And then, we established a security model of the removable storage medium control based on ACM (Access Control...
This article mainly analyzed the relationship between the WS small-world networks and information dissemination from small world network theory. It discussed the diffusion mechanism of negative information combined with the inherent characteristics of the negative information. And it established negative information transmission model based on the WS small-world network model. Finally, the model was...
Petri net has become one of the major formal methods for modeling and analyzing business processes. Petri net is utilized for business process modeling in inter-domain network management system. However business process models may contain errors. So model verification is of necessity and importance. A new model verification method is proposed based on incidence matrix of Petri net. It can be used...
This paper studies a train ticket overbooking rule and strategy for transportation during the Spring Festival. We determine the expected revenue of train operation by the probability theory. According to the principle which maximizes the expected revenue of the railway sector, we construct a mathematical model to determine the number of overbooking sleeper and seat tickets. Using the optimal solution...
By means of the established deterministic combination of numerical and physical model for nonlinear wave propagation, the adaptability of regular and irregular wave propagation are verified under the condition of nonlinear strength and different water depth. In the combined model, a triangular finite element model based on modified Boussinesq equations is applied for wave computation, and a 2D piston-type...
The iterative closest points (ICP) algorithm is widely used for ego-motion estimation in robotics, but subject to bias in the presence of outliers. We propose a random sample consensus (RANSAC) based algorithm to simultaneously achieving robust and realtime ego-motion estimation, and multi-scale segmentation in environments with rapid changes. Instead of directly sampling on measurements, RANSAC matching...
To forecast the thermal response of LPG ( liquefied petroleum gas ) storage tank under the conditions of a non-normal thermal environment is of great practical significance to the evaluation of gas storage and transportation security, especially on disastrous accident prediction. This paper is based on the relationship between conservation of mass and energy conservation to describe the physical model...
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