Method of energy meters calibrations by calorimeter and self-calibration photodiode with time transactions and results described. Method permits to calibrate energy meters, detectors and sources of radiation in a range of measuring more, then 10⁸ times.

The problem of detecting Fusarium fungi infected grains and identifying the varieties of the components of grain mixtures based on the combined use of various spectral measurement methods in various wavelength ranges is considered. A method for measuring combined reflectance and transmittance spectra of the elements of non-uniform grain flow is described. The results of the spectral measurement are processed using neural network based classification algorithms combined with data dimensionality reduction techniques. The probabilities of incorrect recognition for various numbers of features and combinations of spectral methods are estimated

Presents an original structural diagram of the integrating device, which allows to increase the accuracy of the integration in the range of ultralow frequencies of 0,002 Hz to 3 Hz. Practical schemes of second-order integrators and their transfer functions are considered. The results of calculations confirming the increase in the accuracy of integration of the integrator of the second order in comparison with the integrator of the first order depending on the frequency of the device are presented.

In the article in chronological order are considered: two-signal method of measurement of S-parameters of transistors, modification of this method and, developed on their basis, the method of adequate measurement of S-parameters of such devices. The uncertainty of the last two methods for measuring -parameters is eliminated. Methods are implemented by the simulator-analyzer amplifiers and oscillators microwave, as agreed, and mismatched with loads of measuring channels this simulator analyzer. The scope and interrelation of the considered methods with indication of their advantages and disadvantages are analyzed.