By using the fixed point theory in cones,we obtained the existence of positive solutios for the third-order two-point semipositive boundary value problems in which nonlinearity f(t,u)does not have to be continuous and lower bounded but only have to meet Carathéodory s conditions.

The treatment of a group of physical experiment data is down using a first order and five-point formula in the linear sliding method and the result shows that if the pre-treatment is down for the original data obtained from a physical experiment,the accuracy of the experimental data treatment result will be improved and the validation effect of a physical experiment will be enforced.

Existence of Twin Positive Solutions to Third-order Three-point Singular Superlinear Boundary Value Problems;