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Introduction. Inaudible but ubiquitous environmental infrasound undoubtedly affects the frame of mind and health of humans. Objective. The object of the study is to prove that civil engineering objects can be sources of infrasound, and a review of the literature on effects of infrasound on the health of people and animals. Methods. Computer simulation of an air flow around a typical element of outdoor infrastructure. The simulation was carried out using the author’s computer programme, based on Discrete Vortex Method algorithms. Results and conclusions. The numerical experiment clearly proved that industrial objects can be sources of infrasonic noise during windy weather. The picture of air flow around a cylinder shows that regular turbulent motion is a source of sound with one dominating frequency. The sound once generated propagate far from its source. Frequency and intensity of the sound depends on wind velocity and shape of the object. Further research in this area are advisable.
Background. The objective of the study was the adaptation and evaluation of the psychometric properties of the Interpersonal Social Support Scale version for students (ISEL-48v.Coll.: Interpersonal Support Evaluation List College Version). Material and methods. The validation of the instrument was performed according to methodological standards, and statistical validation covered the assessment of criterion and construct validity, and reliability of the scale. The study was conducted with the use of the test-retest method, and a package of research instruments was applied, including, apart from the ISEL-48v.Coll., the PSS-14, HADS and SOC-29. The validation sample covered a group of 167 nursing students for the test and 115 for the retest. Results. Reliability of the ISEL-48 v. Coll. as evaluated by Cronbach’s alpha was 0.88, and for the subscales, it ranged from 0.82 to 0.69. The stability of results determined by the correlation in test-retest analysis ranged within 0.76 – 0.61 (p<0.001 and p<0.01). Conclusions. The analysis of results shows that the adopted ISEL-48v.Coll. is an instrument possessing satisfying psychometric properties.
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