An empirical study employs the 'second generation' structural equation modelling to perform random coefficient estimates for the part worth coefficients in a conjoint measurement design.
Researchers in the field of conjoint analysis have suggested the use of sign violations of the estimated part-worth coefficients as a measure of the quality of the results.
The results of applying this reactivity meter in Tehran research reactor (TRR) are compared with the experimental data of control rod worth, void coefficient of reactivity and reactivity changes during approach to full power.
Comparison of proposed fuel assemblies was realized by length of a batch, average burnup, maximal power of fuel assembly or fuel pin, control fuel assembly worth, reactivity coefficients, and effective delayed neutrons fraction.
Secondly, several calculations using SuperMC at hot zero power condition of cycle 1 are performed, and the comparison with the reference results and measured data show great agreement, including neutron effective multiplication factor, control rod bank worth, temperature coefficients, U-235 fission rates and relative power distribution.
Core physics parameters of TMSR-SF including the effective multiplication factor, neutron flux distribution, power density distribution, control system worth, reactivity coefficients and kinetics parameters are obtained, which are used as input parameters for the thermal-hydraulic analysis of the TMSR-SF.
The model assumes that an individual's utility function, or choice, can be defined by the level's part-worths, or coefficient estimates [4, 8].
All evaluated attribute levels had statistically significant part-worth utility coefficients at the 95% confidence level, except for moderate risk of infection and 4 transfusions per month.
The part-worth values (coefficients) for each attribute are obtained from the random effects logistic regression model analysis with repeated measures (50 responses × 9 profiles = 450 observations), which follows stated choice experiments based on choice theory [ 15, 16].
Control rods worth and temperature coefficients are calculated with these models.
