The present study aimed to identify drainage pollution at Parit Raja, Johor in accordance the Water Quality Index (WQI) and based on Geographic Information System (GIS) data analysis. A total of 18 sampling stations six ditches were selected be points. parameters investigated included Dissolved Oxygen (DO), Biochemical Demand (BOD), Chemical (COD), Suspended Solid (SS), Ammonia Nitrogen (AN) pH...

Classical scheduling techniques are well-known to underestimate the average project duration, yet they remain widely used in practice due their simplicity. In this paper, new Critical Duration Index (CDI) is proposed. This index indirectly allows anticipation for probability of a ending late, as well duration extension compared with deterministic estimate. The accuracy two simple regression exp...