Reliability Analysis of Safety Grade Programmable Logic Controller
This paper focuses on the random hardware failures necessary for the safety assessment of the reactor protection system (RPS). A prediction method of the hardware failure rate for safety assessment is suggested, and applied to the safety grade programmable logic controller (PLC) to identify design weak points from a safety point of view
Tracing the unreliability and recognizing the major unreliability contribution of network components
Weak part analysis of a system is a key element in a system reliability quantification process. It enables the weakest areas of a system to be recognized and assists in directing remedial measures for improving the system reliability. This paper presents a novel approach to identifying the weak parts using the unreliability tracing (UT) technique and introduces the proportional sharing principle (PSP). The model for tracing the unreliability of a complex network is presented based on reliability evaluation methods using minimal cut sets (MCSs) and the PSP. The system UT sharing factors (UTSFs) are derived to easily identify the major unreliability contributions (MUCs) in a system. The method is illustrated using three cases and the UT, UTSF and the reliability impact analysis of different components are discussed. The results show that the developed technique can be applied to complex networks for UT tracing and recognizing the MUC.
Global Islamic Politics
1. Introduction to Islam and Islamic Revivals. 2. Islam: A Vehicle for Political Action. 3. The Muslim Fundamentalists. 4. The Muslim Traditionalists. 5. The Muslim Modernists. 6. The Muslim Pragmatists. 7. Failure of Secular Ideologies and Developmental Crises. 8. Islamic Revivalism in the Arab-Israeli Context. 9. OPEC, OIC, and Islamic Politics. 10. The Islamic Revolution in Iran. 11. Islamic Revival in Central Asia. 12. Conclusion. Glossary of Islamic Terms.