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Artificial upwelling is supposed to be a general technique to enhance the marine primary productivity and fishery resources by means of pumping the nutrient-rich deep ocean water (DOW) to the euphotic layer. The wave energy is the most conspicuous form of ocean energy, the extraction of energy from the waves can be a viable economic solution to the power requirements of artificial upwelling. To extract...
In this paper, an effective technique for leak diagnosis and localization which couples the local entropy difference method (LEDM) to the fast marching method (FMM) is proposed. A computer-based system is described to combine a specific pneumatic circuit with an on-line infrared camera which is used to test the air-tightness of a test vessel. The test object is charged with cryogenic compressed air...
We have not take great depth experimentation of individual escape which is an important means of submarine rescue in our country, mostly because of the security problem. So, the security evaluation in the use of great depth is very important. This article established the mathematical model of individual escape equipment, and figured out the pressure-curve in great depth with differential equation...
Highly migratory tuna is one of economically important harvesting objects of the world. It is practically significant to forecast the probable fishing grounds. Based on satellite data of SST supplied by NASA and historical tuna catch data provided by SPC, relationship between catchability and SST was studied. And then using the Bayesian theorem, a tuna probable fishing grounds prediction expert system...
Customers are usually passive in an electronic commerce transaction. Based on a new two times concurrent signature, this article presents a fair electronic payment (E-payment) protocol. It can protect both of the participants' profits. Whatpsilas more, in this protocol customers have more initiative, and they can terminate the transaction before possible cheats (while they also should be responsible...
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