<prompt> Translate the following text to SwahiliIt differs from an evaluation synthesis in that special techniques are required to aggregate the qualitative information that often is a feature of case studies and to maintain the sense of the instance as a whole in its complexity that distinguishes case studies from surveys of several sites.  <response>: Ina tofauti na uchanganuzi wa tathmini kwa kuwa mbinu maalum zinahitajika kuunganisha habari ya ubora ambayo mara nyingi ni sifa ya masomo ya kesi na kudumisha hisia ya kesi nzima katika utata wake ambao hutofautisha masomo ya kesi na uchunguzi wa maeneo kadhaa. 