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Traffic jam has caused serious environmental pollution problem to our daily life nowadays. To make clear the effects of different traffic flow drivers' type influence on traffic carbon-dioxide(i.e. CO2) emission, we first modified the traditional coupled-mapping traffic flow car following model, that the driver's sensitivity factor obeys mathematic statistical probability distribution, and deduced...
An improved forward considering car-following model was proposed to describe the automated vehicle's flow behavior. A theorem was proved as a criterion for judging the stability of homogenous automated vehicles flow. The greater forward considering vehicles' number means more stability. A series of simulations were carried out to verify the new model and analyze the stability of automated flow. From...
Integrating information of neuroimaging multimodalities, such as electroencephalography (EEG) and functional magnetic resonance imaging (fMRI), has become popularly for investigating various types of epilepsy. However, there are also some problems for the analysis of simultaneous EEG-fMRI data in epilepsy: one is the variation of HRFs, and another is low signal-to-noise ratio (SNR) in the data. Here,...
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,...
Eddy current testing is an important and widely used method in non-destructive testing and evaluation. In this paper, an impedance analysis model of eddy current testing based on mutual inductance equivalent circuit is established using transmission line theory, and an analytical expression of impedance of the testing workpiece is obtained. Then the changes of impedance plane of ECT sensor affected...
The plunger pump which once pumped water was tried to transport crude oil. Because of the big crude oil's dynamic viscosity, the plunger pump's self-absorption characteristic decreased, and the plunger pump's flow rate and efficiency reduced, the noise increased. Therefor, an axial-flow pump was designed by streamline method, which poured crude oil into the plunger pump for enhancing the energy of...
In order to take quantitative analysis on impact factors of energy consumption in crude oil gathering system, gray system theory analysis was adopted to evaluate energy consumption impact factors sequence of crude oil gathering system through the establishment of a crude oil gathering gray system model, the calculation of gray correlation coefficient and the establishment of gray associated sequence...
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