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W pracy dokonano analizy diagnostycznej in situ szkodliwego wpływu zarówno drgań, jak i hałasu pochodzących od robót budowlanych związanych z głębokim fundamentowaniem posadowienia projektowanego budynku na sąsiadujące istniejące obiekty budowlane oraz na ludzi przebywający w tych budynkach. Drgania przekazywane były poprzez podłoże gruntowe, zaś hałas drogą powietrzną. Przed rozpoczęciem tych robót...
The present paper studies the perceived orientation of line patterns with variable elongation, line length, orientation jitter, and presentation time. It evaluates whether the internal noise and sampling efficiency evaluated by equivalent noise paradigm (Pelli 1981) depend on the spatial configuration and temporal characteristics of the stimulation. The evaluated internal noise was compared to the...
The aim of the paper was an attempt at application of multiple- criteria analysis for planning public transport system. Methodological rules of an assessment of public transport systems were presented, including: defining variants and coherent family of criteria. Modelling decision-maker’s preferences and seeking the most desirable solution. The problem of an assessment of public transport systems...
The article relates to arduousness of work and draws particular attention to the problem of accidents at work in timber industry companies in the years 2005-2011. A concise description is presented of the issue of work arduousness caused by noise, mechanical vibration and timber dust, as they are important factors affecting employees’ health. The final part of the paper shows conclusions which may...
Occupational noise enhances the risk of several cardiovascular and non-cardiovascular diseases. The reason behind the drastic effects of noise exposure is the excessive generation of reactive oxygen species molecules. The present study investigates oxidative stress due to occupational noise exposure in 192 male smoking workers exposed to normal noise (sound level ≤80 dBA), low noise (sound level 81-94...
Noise is a serious environmental side effect of rail transport, freight transport in particular. Significant contributors to railway noise are the mechanical vibrations produced by vehicles due to rail roughness. Our paper presents an application of the loading force identification method, based on the inversion of regressive parametric models, in the reconstruction of rail roughness. Rail roughness...
The paper presents ecological and ergonomic issues which must be faced by wood industry enterprises in order to conform with European Union regulations. Special attention was drawn to the problem of selected factors which affect occupational safety in wood industry. Occupational nuisance should be, if possible, eliminated or at least considerably limited. As the most common irreversible occupational...
This article presents methods of identification of dynamics characteristics of chain saws. These methods can be successfully used in the process of identification of resonant frequencies and visualisation of ODS of chain saws. Vibration measurements were done using Laser Doppler Vibrometry. Some examples of identification of dynamics characteristics of chain saws and their operational deflection shapes...
Dokonano analizy zagrożenia hałasem występującym podczas okrzesywania i przerzynki drewna pilarką spalinową. W badaniach wykorzystane zostały dwa modele pilarek spalinowych Husqvarna: 242 i 257. Pomiary hałasu zostały przeprowadzone podczas pozyskiwania drewna w drzewostanie rębnym sosnowym.
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