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Analysis of ergonomic work equipment lowering the static load based on trend of development of work activities

REFEENCES Andersson, B. J., Ortengren, R., Nachemson, A.L., Elfström, G. and Broman H. (1975). The sitting posture: an electromyographic and discometric study. The Orthopedic clinics of North America, pp. 105-120. Berlin, C., Adams, C. (2017). Production Ergonomics: Designing Work Systems to Support Optimal human Performance. London: Ubility Press, pp. 127-138. Bršiak, V., Kotrbancová, M. and Bršiak, M. (2014). Prevencia a liečba bolesti chrbta. Púchov: Pro Benefit s.r.o. Bubeník, P. (2004). A scheduling system for minimizing the costs of

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Optimization Model for Multimodal Transportation Networks Based on Supply Chain

Abstract

The article presents the problem of supply chain optimization from the perspective of a multimodal logistics provider and includes a mathematical model of multilevel cost optimization in the form of MILP (Mixed Integer Linear Programming). The costs of production, transport, distribution and environmental protection were adopted as optimization criteria. Timing, volume, capacity and mode of transport were also taken into account. The model was implemented in the LINGO ver.12. The numerical experiments were carried out using sample data to show the possibilities of practical decision support and supply chain optimization.

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Selected methods of securing the refining sector against crude oil price fluctuations

before the sharp fall in prices on the market in mid-2008. It is also worth noting that the above-mentioned uncertainty of crude oil price on the market volatility increased even more after a significant reduction in crude oil prices in the second half of 2014. As Czyżowski [2015] claims, the market lost its reference point in the moment when the strategy of the Organization of the Petroleum Exporting Countries (OPEC) was to look to the marginal costs of production to support oil prices, progressing from the physical market to the paper market. It is also worth

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