:) I only have one pair of dress pants in my wardrobe too, it's a definite gap. (morepiecesofme.com)
Tim Anderson, commercial director, Portcullis says: «There is a definite gap in the education sector with students missing the fundamentals of coding and programming. (education-today.co.uk)
Being a theoretical explanation of the fact of researching this very topic, your introduction should also contain the information, which answers whether this very topic is widely researched in scientific literature or there exist some definite gaps, which should be filled in with the help of this very study you make in your dissertation. (customwritingservices.org)