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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...
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...
High error in calculating the heat transfer of floor heating system can be introduced by existing models, considering the heat transfer of the floor slab and different temperature between interior wall and exterior wall. A modified calculation model of heat transfer of floor heating system was proposed, analyzed the influence of the interior or exterior wall and the floor slab, and discussed the disadvantages...
In order to enhance the supporting capacity of military logistics distribution system under attack, according to its characteristic multiple covering, a model was designed for allocating limited protection resources to q of p existing facilities. The model was formulated in a bilevel programming, whose upper level maximized the extent of protected facilities covering customers when enemy destroyed...
Sudden service disruption due to natural or man-made disaster is one of the major threats to commercial supply chains and military logistics at present. In this paper, we present an integer-linear programming model for critical facilities protection based on time satisfaction, which could overcome the weakness of simply using time and distance in previous researches. The objective function is maximizing...
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