Strong cost control drives an earnings beat.Transportation logistics specialist C.H. Robinson Worldwide (CHRW 14.86%) used tight cost control to deliver an earnings beat. Investors are celebrating the success, sending shares of Robinson up 15% as of 10:30 a.m. ET.Executing through the cycleIt is a difficult operating environment for transportation companies. Economic concerns have caused big shipping customers to cut back, softening demand for transport services.C.H. Robinson appears to be handling the chal ...