queuing theory

Investigation of the industrial injuries state at the machine-building enterprises of the western region of Ukraine

The article describes the prerequisites for creating an automated system for planning measures to prevent occupational injuries at machine-building enterprises. The results of a study of occupational injuries based on statistical data depending on the employee’s experience, gender, working conditions, days of the week and month are given for the leading machine-building enterprises.

Channel Selection Algorithms Performance Evaluation for Spectrum Decision in Cognitive Radio

Different spectrum decision methods in a Cognitive radio network were analyzed in this paper. The technology of Cognitive Radio networks needs to make a decision which spectrum band is the best among the available free bands. Spectrum decision is closely related to all operational parameters, channel characteristics and any activity of primary users. Also, spectrum decision depends on all cognitive users inside network activities.