As the minimal dummy activities and dummy nodes problem is NP-Hard problem,for a given project,there may be several correct AOA networks which differ in their number of dummy activities and number of nodes.

The Localization Technology Based on TDOA for Wireless Sensor Network Nodes;

According the speciality of wireless sensor network technology and alarming in intelligent home,we designed an alarming system based on wireless sensor network technology,built the structure picture of alarming system,and designed the network node and software of the alarming system.

Such design enhances the flexibility of the system and improves the reliability of the network nodes.

The character of CAN field bus and real- ization of CAN network node are introducd for emphesis.

This paper analyzes various heat exchanges of each area unit of the projectile surface with environment and establishes heat balance equations using the node network technique.