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Apple plays an important role in modern agricultural economic. With the international trade competition and focus of apple consumption has been transferred from appearance quality to internal quality. Currently, people pay more attention to the potential of near infrared spectroscopy in nondestructive detection of fruits. In this paper, we measure the spectrum, sweetness and acidity of apples, use...
Ambient temperature is an important factor influencing the reliability of electromagnetic relays. The effect of different environmental temperatures on relay lifetime can be examined through the Cox-proportional hazards model (PHM). In this paper, relay life tests were carried out at −20 °C, 20 °C, and 55 °C. Relay lifetime data were collected at various temperature conditions and were integrated...
Trip-out rate plays a very important role in the research of stable operation of power system, so trip-out rate forecast has become an urgent problem. combining with the characteristics of the grey theory, a catastrophe prediction model about trip-out rate was set up based on the original data. A trip-out rate threshold was established and the data exceeding it was considered abnormal. The time when...
The system reliability is determined by both failure mode and reliability of system units. Therefore, the assessment of system reliability must firstly be depended on the assessment of the reliability of system units. In the same reliability system, the system reliability performance will be affected by the composition of different system unites. In response to this problem, a new method of system...
Reliability is an important index to evaluate product quality, and reliability degree is most commonly investigated among various reliability characteristic values. When generalized stress and generalized strength are fuzzy variables, this paper proposes a method for solution based on two algorithms, i.e. the computation of fuzzy reliability using fuzzy number subtraction and fuzzy failure degrees...
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