<prompt> Translate the following text to EnglishBaadhi ya maombi ya utafiti wa kesi kwa madhumuni ya tathmini wamekuwa walijaribu kiasi kina-kwa mfano, programu ya utekelezaji wa masomo ya kesi.  <response>: Some applications of the case study to evaluation purposes have been tried fairly extensively-for example, program implementation case studies. 