<prompt> Translate the following text to EnglishMakala hii inakusudiwa kuhamisha kile tunachoamini kuwa mazoezi mazuri katika masomo ya kesi na kusaidia kuanzisha kanuni za kutumia masomo ya kesi kwa tathmini.  <response>: This paper is intended to transfer what we believe to be good practice in case studies and to help establish the principles of applying case studies to evaluation. 