A new method of using database to manage BES offline calibration constant data is presented, and its whole implementation in Linux is described in detail.

Based on calibration theory of array induction logging,the calibration coefficient is derived.

Based on analyzing the measurement theory of the fluid densimeter,the paper brings forward a complete set of methods for data acquisition and calibration coefficient calculation.

Based on the randomness of space and direction distribution of α particles (emitted) by radon and its daughters in the volume of detector can, a Monte-Carlo code was developed to calculate the calibration factor of Solid State Nuclear Track Detector (SSNTD) for radon.

In this paper, the calculation method of gammaradiation instrument calibration factor have been deeply studied.

We employ the Bayes empirical Bayes (EB) procedure to estimate the scale parameter in a special exponential family,and prove that the Bayes EB estimator of the scale parameter converges almost surely (a.

By means of the parameter estimation,we give the Bayesian estimation,the minimum risk equivalent estimation and the minimax estimation of scale parameter σ under the q-symmetric entropy loss function in the normal distribution,its mean of which is 0.

The present paper deals with the minimum risk equivelent estimator and Bayes estimator for the scale parameter of exponential distribution under the symmetric entropy loss, and discusses the admissibility and inadmissibility of estimator with the form of (cT+d)-1.