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As you know, such figures are often hollow. Explain the process used to form such figures economically.
Continue to heat treat it for another 12 hours at the same temperature but detect no change in density. Could the grain size of the material have changed?
Discuss all the differences you will find when comparing the two pairs of dumbbells.
What would be the advantages and disadvantages of making Na-vapor lamp envelopes using yttria instead of alumina?
This addition allows the alumina to be sintered to full density. Summarize the possible reasons for this effect and suggest an alternative additive.
What will the pore size be when the gas pressure just balances the pressure due to the surface tension?
Calculate the viscosity of the glass at each temperature and deduce an activation energy.
Four research participants take a test of manual dexterity and an anxiety test.
What are mean value [min] and variance [ ] of the random time min Y between 2 the occurrence of two successively recorded particles?
What is the average number of customers waiting at the rank? Exponential with parameter The repair times are exponen with parameter All life and repair times
whichever occurs first. By using suitable martingales and applying the optional stopping theorem, determine
What is the average percentage of operating machines? What is the average percentage of idle mechanics?
Consider the two-unit system with parallel redundancy discussed in example 5.6 on condition that the lifetimes of the units are exponential
Describe the behaviour of the system by a Markov chain and draw the transition graph.
Determine the stationary state probabilities of the system. Sketch the stationary availability of the system as a function of
What is the mean time till there are left only n free molecules of type b in the container?
Thus, the interruption of a current service of a data record is possible. Determine the stationary loss probability.
Determine the matrix of the transition probabilities of the corresponding discretetime Markov chain and its stationary state distribution.
Determine the optimal renewal interval t and the corresponding maintenance * cost rate for policy 1 (section 3.2.6.2
Prove the multinomial criterion (formula 3.55). Assume that L has density Fl. A system is maintained according to policy
Determine the optimal repair cost limit with given by (3.91) and given F(t) R(x) by (3.96)
Determine the same probability given that two catastrophic accidents have occurred in the first half of the current year.
By making use of the independence and homogeneity of the increments of a homogeneous Poisson process with intensity show that its covariance
What is the probability that the Geig p er counter records at least 2 particles a =2 minute?
Consider two independent homogeneous Poisson processes 1 and 2 with respective intensities ? and Determine the mean value of the random