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With regard to the frequent food supply chain risk incidents situation, This paper divides the hierarchical structure of food supply chain risk factors with F-AHP, and buildes a food supply chain risk factor identification system and risk fuzzy comprehensive evaluation model on the basis of definition of food supply chain. Meanwhile, by taking the food supply chain of one diary producer for example,...
In the process of the exploitation of heavy oil, the energy loss of well bore directly affects the effect of steam injection thermal recovery, reasonable thermal calculation model of stream injection well bore is important for establishing the surface energy of well bore. There are already many calculation models about well bore energy loss, however there are still shortcomings of the application...
In the process of the exploitation of heavy oil, the energy loss of the ground steam pipelines directly affects the effect of steam injection thermal recovery, reasonable calculation model is important for establishing the surface energy of the steam pipelines. There are already some calculation models about the ground steam pipe energy loss, however there are still shortcomings of the application...
A new UKF based for radar and infrared sensor registration method is provided. A so-called "hybrid states" concept is introduced to describe target's state, which consists of the target's range, bearing and elevation and its velocity in the Cartesian coordinate system. The dynamic function and the measurement function are deduced in hybrid states. Simulation results show that the proposed...
Current particle filter assumes that the dimension of state is known and constant and it fails when this suppose does not holds. This paper improves on the particle filter using RJMCMC. The improved particle filter can not only preserve the performance on the Non-Linear and Non-Gaussian condition, but also can be used when the dimension of state is unknown or changing over time. This paper uses the...
This paper presented an algorithm to calibrate the extrinsic parameters between a 2 dimensional laser range finder and a pan-tilt platform. After 3 kind geometrical features are analyzed, the line feature was selected. A calibration board with right-angled triangle outline was designed to improve the calibration precision. Based on the line feature, the constrain equations was established. The experimental...
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