Hop-based forwarding along a path from source node to a sink can be inefficient in delivery rate and energy efficiency,especially in the lossy environments,using a lossy link model,two new forwarding schemes named single-link and multi-link energy-efficient forwarding that trade off delivery rate and energy costs best by.

Criteria for identifying delivery of ocean cargo and their application in practice in China;

Research on Legal Problems in Delivery of Commercial Housing;

The regulation of the risk-bearing in performance should be different according to different situations,when the consignment should be the core.

The difference that understanding have because of our country educational circle and legislative circle use "hand over" in two kinds of different meanings mainly, what is adopted is the "ownership doctrine" in our country contract law but not "hand over doctrine" .