Lifeng Xuan

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Wireless sensor networks (WSN) is a novel data centered self-organizing network that can be used in acquiring and processing information. With the limited energy of sensor nodes and the increasing requirement of secure data transmission, how to save nodes energy as well as realize a transmission of sensitive information in WSN effectively is becoming an(More)
Wireless sensor networks (WSN) are faced with the problem that network size is inversely proportional to network lifetime because the number of data packets transmitted is equal to the number of communication nodes for recovering original signal. Compressed sensing(CS) compresses and samples in sparse domain of network source to reduce the amount of(More)
In recent years, with the frequent occurrence of security incidents, enterprises and organizations have now realized the importance of designing a safety information system. Today, information systems are heavily relied on web and database technologies, thus the risks and threats those technologies faced will also affect the security of information systems.(More)
A database-management system (DBMS) is a collection of correlated data and a set of programs to access correlated data. The collection of data, usually referred to as the database, contains information able to an enterprise. And hence the concept of security lies with-in. As the database contains all information relevant to particular enterprise, so(More)
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