—An algorithm for finding the starting state of a feedback tailbiting encoder is proposed, based solely on the properties of the encoder state diagram. With this approach, conditions for the existence of a tailbiting code generated by such an encoder are naturally tested in the process of preparing a certain permutation table for the starting state determination algorithm. A tailbiting failure ...

Background: The reliability and safety of gas refineries are strongly associated with the reliability of other parts of the system. Defect and failure in one part of a system can cause total system breakdown or accident. The failure and damage in these equipment such as transformers and boilers results in not only the equipment damage and human injuries but also productivity reduction. The purp...

introduction: academic failure of students is a major problem of higher education. the aim of this qualitative study was to explore the factors causing academic failure in nursing students of qom university of medical sciences in 2015. methods: this qualitative study was carried out via conventional qualitative content analysis approach. a total of 21 nursing students (18 males and 3 females) w...

material hazards are the most important risk in scientific laboratories. in risk assessment processing, the potential impact of assessor personal judgment is the most important issue. this study tried to develop a risk assessment pattern based on failure mode and effect analysis (fmea) and analytical hierarchy process (ahp) logics and empirical data in scientific laboratories. the most importan...

This paper presents a comparison between a number of different failure prediction methods for superplastic forming processes. Attention is limited here to superplastic forming of Ti-6Al-4V at 927C. The failure prediction methods considered include the flow localisation factor approach, forming limit curves based on void growth models, such as the Rice and Tracey model and the Cocks and Ashby mo...

This paper presents a comparison between a number of different failure prediction methods forsuperplastic forming processes. Attention is limited here to superplastic forming of Ti-6Al-4V at 927C. Thefailure prediction methods considered include the flow localisation factor approach, forming limit curvesbased on void growth models, such as the Rice and Tracey model and the Cocks and...