From the perspective of cognitive psychology, the paper explains that knowledge is stored and expressed in propositional network, makes a detailed explanation to the two processes-elaboration & organization which benefits knowledge acquisition and use, and further studies on its implication to English vocabulary teaching.

For each node in Wireless sensor networks (WSN) has only limited energy, it is important to design a power-efficient routing protocol to extend the network lifetime.

We present a new best energy route discovery method which could meet the requirements of QoS bandwidth and has better network lifetime.

Experimental results show that our algorithm has a better performance on network lifetime than the common clustering algorithms.

The network revolution,which is the most important transformation since the beginning of the history;can be regarded as the fourth technological revolution following agricultural revolution, industrial revolution and information revolution.

In addition,further understanding on structural form as well as properties of life network was also proposed.

The concept and structural form of life network were put forward.