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This paper describes in brief the Reliability and Maintainability (R&M) Programs performed directly by the reliability branch at Goddard Space Flight Center (GSFC). The mission assurance requirements flow down is explained. GSFC practices for PRA, reliability prediction/fault tree analysis/reliability block diagram, FMEA, part stress and derating analysis, worst case analysis, trend analysis,...
Along with the computer technology developed soon, the software scale enlarged continuously, and the complexity raises continuously, the software crisis is also emerged obviously more and more, so it's necessary that make the mode of software produce conversion from the handicraft workshop production of personal and group to the large-scale socialization production of profession division of labor,...
From the perspective of participants of IT projects, this literature analyzed how to design a new IT project management system. The key to it is to study on one-member management, binary system and ternary system of IT project management. Based on the above research, we found that the unreasonable relations existed in present three-member management system, thus putting forward the suggestions for...
The design for a 0.3 THz 400 W CW gyro-monotron is done and TE06 operating mode is chosen in the paper. The RF cavity mode field distribution and the diffraction Q value is optimized using HFSS software, so the starting current and operating magnetic field is chosen to restrain the mode competition. The simulation results including the peak output power 400 W and the electron efficiency 20% in the...
Convolutional code and Viterbi decoding is one of the methods used for channel coding. Convolutional coding is widely used in many aspects because of its excellent performance. However, both the coding algorithm and hardware implementation are very complex. Along with the continuous deepening of SOC design, hardware-software co-design technology has become more and more important as one part of SOC...
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