13. Ahmed NU, Smith GL, Flores AM, Pamies RJ, Mason HR, Woods KF, Stain SC, 2005. Racial/ethnic disparity and predictors of enjoyment time physical activity among US men. Ethnicity and Disease 15: 40 52. Alexandris K, Carroll B, 1997. An analysis of entertainment constraints based on alternative recreational sport participation levels: Results from engineering study in Greece. The inefficiencies in matlab processes were quickly diagnosed and solved. Toyota, Dell and Harley Davidson’s are matlab a success companies/ firm which use Just – In – Time JIT. They produce matlab positive products in line with matlab purchaser needs and they these three agencies have achieved engineering competitive potential within matlab industries by using Just – In – Process JIT idea. The Just – In – Time JIT concept is used and being useful in lots of engineering matlab firms/Industries especially in manufacturing sectors. But there are some companies were Just – In – Time JIT idea can’t be followed, like drug/drugs production companies and in matlab pharmaceutical agencies. Just – In –Time JIT is all about minimising or decreasing matlab inventories, this concept should not relevant in these agencies.