Abstract: In power grid engineering, improving work efficiency is crucial, and accurate recognition of power grid diagrams is particularly important. To address issues such as the insufficient ...

Copyright: © 2013 Elsevier Ltd. Published by Elsevier Ltd.

Some cancers may block channels in the body and stop particular body systems working so well. Some cancers may cause changes in the body by pressing on surrounding body tissues or organs. Some cancers ...

If it looks like a duck, quacks like a duck, and acts like a duck, then it is a duck—or so the saying goes. But what about an institution that looks like a bank and acts like a bank? Often it is not a ...