Chen, Hong Ph.D., Purdue University, December 2009. Analysis of Access Control Poli­ cies in Operating Systems . Major Professor: Ninghui Li. Operating systems rely heavily on access control mechanisms to achieve security goals and defend against remote and local attacks. The complexities of modern access control mechanisms and the scale of policy configurations are often overwhelming to system...

The UMLinux [3] environment provides virtual machines on top of which the Linux operating system and off-the-shelf software is installed. Using UMLinux, you can set up systems consisting of several networked virtual machines. A userfriendly GUI guides you through the process of configuring the virtual hardware. Once the hardware is set up, you can proceed to boot the Linux operating system and ...

BACKGROUND According to a representative German study prepared between 1996 and 1998 (SuSe-Study) 90% of the mothers were willing to breastfeed, but only 33% (10%) of the babies were exclusively breastfed up to 4 (6) months of age. Bearing in mind that the period currently recommended for breastfeeding is 6 months, this discrepancy highlights the need for action to identify the causes. The pres...

Well capture zone determination and site remediation has led to an increasing need of understanding how to quantitatively characterize both the heterogeneity of gravel aquifers and the influence of heterogeneity on groundwater flow and solute transport. Models play an important role in decision-making processes, especially in the context of better characterizing and in forecasting the behavior ...

More and more software use cryptography. But how can one know if what is implemented is good cryptography? For proprietary software, one cannot say much unless one proceeds to reverse-engineering, and history tends to show that bad cryptography is much more frequent than good cryptography there. Open source software thus sounds like a good solution, but the fact that a source code can be read d...

the limit and definition of the cultural zone of jazmurian in the southeastern iran is identical with the geographical boundarise of jazmurian basin and in geographical setting. the cultural zone of jazmurian could be identified with the ancient makan of akadian period, gedrosia and achofadjia of historical period. the remains of ancient city of jiroft during islamic period at the archeaologica...