Anti collision theory of air traffic control and its application 并列题名：Anti collision theory of air traffic control and its application Principles of automatic control and its applications Scientific theory of trungscin and its applications 并列题名：Principles of automatic control and its applications Generative lexicon theory for semantic interpretation and its application Scales transformation theory of electromagnetic field and its applications New theory on sex ratio at birth and its application Hydroelastic theory of very large floating structure and its application