Water quality modeling, which establishes how pollutants will interact with and alter the receiving waters, has been an important pillar for implementing and enforcing the regulations. Water quality modeling for environmental information system has been illustrated by application to the Ci Liwung Watershed, Indonesia. The message of this research is: water quality modeling applied correctly for water quality management.

No abstract

This work is deal with problems about PMSM. In the first part there is account working principle and design of PMSM. Below there is mathematic model of PMSM, which is used in calculation of behavior PMSM. The third part is deal with parameters influence on transient phenomenon, especially his starting and synchronization process. The last part observes parameters influence on the machine with help of simulator program PCSIM. There are four cases.