Yu-Fang Sun

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Supporting for the security policy flexibility is one of the goals of modern secure operating systems. The DTOS (distributed trusted operating system) program put forth a concept of security policy lattice, which provides a good way for the research on security policy flexibility. However, it is claimed in the DTOS program's description of security policy(More)
Labels are the foundation for implementing multilevel systems and the prerequisite of enforcing mandatory access control in secure systems. How to define and enforce label functions which support multiple security policies is the focus here. A security label common framework (SLCF) based on static object label and dynamic subject label is put forward. SLCF(More)
The effects of moderate salinity on the responses of woody plants to UV-B radiation were investigated using two Populus species (Populus alba and Populus russkii). Under UV-B radiation, moderate salinity reduced the oxidation pressure in both species, as indicated by lower levels of cellular H2O2 and membrane peroxidation, and weakened the inhibition of(More)
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