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In this paper, we generalize the classical lower and upper concepts, and establish some comparison principles. On the basis of them, we obtain the existence of extremal solutions of periodic boundary value problems for nonlinear impulsive differential equations of mixed type by using the monotone iterative technique.
In this paper numerical simulated the thermal properties of solar air collector. With the ray-tracing solar load model provided by Fluent software, the solar radiation heat flux can be solve using radiation heat transfer equation, and then consider loading radiation heat into the source terms of the energy equation. The thermal effects rules of air flow and heat transfer in the collector box, temperature...
Agent technology is a rapidly-developing research field. It has been applied into fields like business, industry, military affairs, and education currently. Its characteristics like intelligence, self-determination and motion provide probability for settling the problems of special subject learning website construction. It is main purpose of thesis research to use MAS designing idea and Ms Agent technology...
This paper adopts the method of Fluent software simulation and simulates research the thermal performance of a solar air collector's with porous and fold lined. Changes in the structure of the collector plates whether the openings, folded plate and the plate hole collector aspects to impact performance are discussed. In order to have comparable, to simulate in the intensity of solar radiation, wind...
When fatal forest disasters take place, only one retrieval depot usually can not provide enough supplies to resolve the emergency. So the problem about how to combine multi-depot-multi-resource has been put forward. The main objective of the multi-resource scheduling is how to achieve the least emergency time and the fewest retrieval depots. In this scheduling algorithm, there are mainly two factors...
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