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While many research projects in the world have been addressing challenges posed by digital preservation, digital libraries in China have their own native problems that have never been addressed before. Similar problems may occur in other countries, and their memory institutions may be less prepared to handle them. Quite often, information in the native special digital objects is also unique in world...
Aiming at the connotation of anti-risk capability of the listed companies in communication services industry of china, this paper constructs anti-risk capability evaluation index system of the listed companies in communication services industry including five factors: profitability, ability to obtain cash, solvency, operation ability, development ability, and adopts evaluation method by entropy method...
The financial crisis is an ongoing crisis triggered by a dramatic rise in mortgage delinquencies and foreclosures in the world now, with major adverse consequences for listed companies around the globe. Anti-risk capability has very important influence over the competitiveness in the long-term development vice versa. And electric power enterprises in China must enhance their competitiveness force...
In a northern city of China the groundwater has been contaminated by carbon tetrachloride. And the carbon tetrachloride can long stand in groundwater for many years, and pose threat to human health. In this paper the health risk caused by intake from drinking water and by dermal contact with shower water was estimated. The results show that the areas neighboring the extramural well have a higher health...
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