Forward Simulation and Image Analysis of Ground-Penetrating Radar for Subsurface Pipes

This study focuses on the basic electromagnetic theory of ground penetrating radar（GPR）and program composition with finite difference time domain (FDTD) to solve the Maxwell curl equations. The radar forward map for subsurface pipes in different diameter was simulated, and then the Matlab program is used to extract this different image feature, the Fourier transform is used for fitting curve in the corresponding region, as a result that the images curvature and radius data are obtained. Finally, the relationship between pipe diameter and curvature radius is achieved by contrasting this data, which provides accurate and reliable basis for non-professionals in radar image recognition for engineering pipe.

Pass Design Method for Rolling Titanium Alloy Rod

In order to improve formability of Titanium alloy, the three-roll mill is used instead of two-roll during continuous rolling titanium alloy rod. Considering that the filling coefficient of titanium alloy rod is different from that of ordinary steels, a new pass design method has been illustrated in this paper. Based on the orthogonal experiment and finite element method, the spread formulae for round rod and triangle rod have been developed, and the program composition of pass for rolling TC4 rod has also been is used in experiment. The results showed that the proposed method is reasonable and could produce the qualified products.

Semantic User Interfaces

Semantic User Interfaces (SUIs), are sets of interrelated, static, domain specific documents having layout and content, whose interpretation is defined through semantic decoration. SUIs are declarative in nature. They allow program composition by the user herself at the user interface level. The operation of SUI based applications follow a service oriented approach. SUI elements referenced in user requests are automatically mapped to reusable service provider components, whose contracts are specified in domain ontologies. This assures semantic separation of user interface components from elements of the underlying application system infrastructure, which allows full separation of concerns during system development; real, application independent, reusable components; user editable applications and generic learnability. This article presents the architecture and components of a SUI framework, basic elements of SUI documents and relevant properties of domain ontologies for SUI documents. The basics of representation and operation of SUI applications are explained through a motivating example.