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Researching for the multi-ribbed compound wall. Testing the thermal conductivity of materials. For thisMulti-Ribbed Wall, giving the Computational Method of the heat transfer coefficient. And getting the insulation thicknes which meet the requirements of the housing in cold rural areas.
Mobile services are characterized by multi-actors, cross-industries, integrated, dynamics, interaction, and requirement uncertainty. These features make us hard to calculate their service value. This paper construct a network relationship model of actors in mobile service, study the ecosystem formed by these actors, and ecological level. Then we take mobile phone TV, the most typical service within...
Some kinds of generalized convex function are defined, which generalize some of the present convex functions. In the framework of these new concept, a Mond-Weir type dual for a class of fractional programming problem is considered. Appropriate duality results are formulated. The results obtained not only provide a measurement of sensitivity for given problems to perturbations, but also can be apply...
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