Experience from institutions within case study countries shows that the self- assessment process (at institutional or unit level) has positive effects on the culture of quality within an institution or unit. Because it is conducted within a collegial atmosphere without any pressure from an external body, the self- assessment fosters. S GrafStatistically self-similar fractals. Probab Th Rel Fields, 74 (), pp. 4. D HuThe expression for random sub-self-similar sets. J of Math, 21 () , pp. 5. D HuThe necessary and sufficient conditions for various self- similar sets and their dimension. Stochastic Processes and Their Appl, 90 (), pp. There is now immense diversity in the structure and practices embodied in agricultural marketing systems in sub-Saharan Africa as market forces have led to the development of systems tailored to the production, processing and marketing characteristics of each commodity. SELF-SUFFICIENCY AS AN OBJECTIVE AND A.