This paper analyses the existing expressway data network, presents a new model based on the data network extended understratum, and gives out two achieved project, enumerates the key configure.

Aiming at the network equipment at the understratum of MDCN(Mobile Data Communication Network), the security leaks existed and security risks confronted are analyzed from the aspects of IOS, management way, potential baleful attack etc.

Many scholars have tried to explain the validity of the term understratum since it was put forward in the early 1990s;nevertheless, it remains confusing ,vague and ambiguous.

The effect of a Bi underlayer on FePt thin film;

Effect of Ag and Ti underlayer on the ordering in Fe/Pt multilayers;

The effect of sputtering Cr or CrTi underlayers on the performances of Co68Cr17Pt15 thin films were studied to improve the magnetic properties of recording media.

Design of Engine Room Bottom Arrangement for 82000DWT Panama Bulk Carrier

bottom-frame brick house construction with shear wall is the special construct system, It needs some special considertatio

The Wu dialect substratum and history reflected in Tongtai dialect;

In 1988, I proposed that there was a Min substratum in the Wu dialects of southern Zhejiang province.

Peasants and Rural Areas as "Subaltern";

One of the important characteristics of the intellectual s reflective fiction consists in the intellectual who returned to his glory through his sufferings;during the course of his meeting with misfortune some subaltern persons,especially subaltern laboring women,expressed their favor and even cult towards such an intellectual.

On the contrary, some of the subalterns still have their so-called feudal marriage such as marriage by exchange and marriage by purchase, which seems to be “backward” and “immoral.