This study investigates possibilities for identifying additional deposits of polymetallic ores based on geophysical studies that use ground-penetrating radar (georadar). Such studies can render a deposit significantly more attractive from an economic standpoint. Experimental methodological work was carried out to compare the geological data of preliminary exploration and georadar exploration with GROT 12 georadars.

Keywords: ground-penetrating radar, radargram, geological section, profile, anomaly, ore body, exploration, video pulses

The results of experiments on the Moscow – Ekaterinburg highway are discussed. The principal possibility of using broadband (150-600 kHz) HF signals for transmitting information and for studying the fine structure of the ionosphere in various heliogeophysical conditions is shown.

Keywords: broadband signal, ionosphere, fine structure, noise resistance, operational forecast, information transfer, multiple-beam structure, separation of signals, base frequencies, signal attenuation, long-term prediction

The article describes optimal mechanisms of wideband transmitter and receiver (150-600 kHz) for information transfer and for researching of thin structure of ionosphere in different helio-geophysical conditions. The proposed schemes give an opportunity to receiving with division of beams and to use the energy of all waves for increasing interference immunity.

Keywords: wideband, frequency of sounding, synchronization, antenna, reference generator, processor, band-pass filter, interference immunity, multipath propagation, phase, program

The article describes the correlation between the signal edge amount of sounding pulse and small irregularities detection in environments with dispersion. The analysis of experimental data on effective bandwidth of decameter waves spreading on the route Moscow-Ekaterinburg and results of wideband ground-penetrating radar sounding in natural environments with high dispersion gives the opportunity to experiment on surface, vertical and backward-inclined sounding. It is reported that the use of wideband electromagnetic pulses is perspective trend of progress in sounding of natural environments.

Keywords: electromagnetic sounding, decameter waves, electromagnetic pulses, small irregularities, permittivity, ground-penetrating radar sounding, dispersion, natural environment, vertical sounding, spectral form, ionosphere

"The article explains the possibility of using polytomous models to assess personality qualities that affect the information competence of students. The input data were obtained with the help of the questionnaire ""Information competence."" The characteristics of survey participants as well as indicators of questionnaires were calculated to assess their suitability for definition of the level of formation of information competence. The recommendations for finalizing of the questionnaire were made.

Keywords: level of student latent variables, polytomous model indicator, a diagnostic test.

The article explains the possibility of using polytomous models to assess personality qualities that affect the social-legal competence of students. The input data were obtained with the help of the questionnaire ""Social-legal competence."" The characteristics of survey participants and indicators of questionnaires were calculated to assess their suitability for definition of the level of formation of social-legal competencies. The recommendations for finalizing of the questionnaire were made.

Keywords: level of student latent variables, polytomous model indicator, a diagnostic test, social-legal competence.

The article explains the possibility of using polytomous models to assess personality traits that affect  on communicative competencies of students.
Input data obtained using a questionnaire V.V. Boyko  " Communicative tolerance " have been used for calculating the characteristics of survey participants and  indicators of the test.  

Keywords: level of student latent variables, polytomous model indicator, a diagnostic test.