11. The theoretical basis is to deconstruct the concept of a competition in quality. 12. Labarraque's use of Lister began to establish the theoretical basis of this practice. 13. "We're really struggling to find a theoretical basis for this ." 14. His senior honors thesis examined the theoretical basis for Mill's work. 15. Along with Nobel laureate Jaroslav Heyrovsk? he helped to establish theoretical basis of polarography. 16. Modern mathematical economics ( economic mathematics ) provides a theoretical basis for energy modeling. 17. At the time of Cottrell's invention, the theoretical basis for operation was not understood. 18. In short, De Tocqueville developed a theoretical basis for French expansion in North Africa. 19. The modern era saw the development of undergraduate and post-graduate theoretical basis for practice. 20. The theoretical basis of closed loop automation is control theory.