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Lower back pain and absenteeism among professional public transport drivers
Vasja Roblek, Maja Meško, Friderika Kresal, Andrej Jerman, 2015, original scientific article

Abstract: Drivers in public transport are subjected to lower back pain. The reason for the pain is associated with the characteristics of the physical position imposed on the worker while performing the job. Lower back pain is the main cause of absenteeism among drivers. The present study includes 145 public transport drivers employed as professional drivers for an average of 14.14 years. Analysis of the data obtained in the study includes the basic descriptive statistics, X2 test and multiple regression analysis. Analysis of the incidence of lower back pain showed that the majority of our sample population suffered from pain in the lower back. We found that there are no statistically significant differences between the groups formed by the length of service as a professional driver and incidence of lower back pain; we were also interested in whether or not the risk factors of lower back pain affects the absenteeism of city bus drivers. Analysis of the data has shown that the risk factors of pain in the lower part of the spine do affect the absenteeism of city bus drivers.
Found in: ključnih besedah
Summary of found: ......
Keywords: absentizem, delovno okolje, bolečine, poklicni vozniki, absenteeism, lower back pain, the work position, professional bus drivers
Published: 14.10.2015; Views: 1577; Downloads: 126
URL Full text (0,00 KB)

A three-person deterministic graphical game without Nash equilibria
Endre Boros, Vladimir Gurvich, Martin Milanič, Vladimir Oudalov, Jernej Vičič, 2018, original scientific article

Abstract: We give an example of a three-person deterministic graphical game that has no Nash equilibrium in pure stationary strategies. The game has seven positions, four outcomes (a unique cycle and three terminal positions), and its normal form is of size only. Thus, the example strengthens significantly the one obtained in 2014 by Gurvich and Oudalov; the latter has four players, five terminals, and normal form of size . Furthermore, our example is minimal with respect to the number of players. Somewhat similar examples were known since 1975, but they were not related to deterministic graphical games. The small size of our example allows us to verify that it has no Nash equilibrium not only in pure but also in independently mixed (so-called behavioral) strategies. For independently mixed strategies two distinct effective payoffs can be considered: along with the classical Markovian evaluation, we also consider a priori evaluation, which may be a better fit for playing in behavioral strategies
Found in: ključnih besedah
Summary of found: ......
Keywords: deterministic graphical multi-person game, perfect information, Nash equilibrium, directed cycle, terminal position, pure stationary strategy
Published: 30.03.2018; Views: 1406; Downloads: 103
URL Full text (0,00 KB)

On the Sprague-Grundy function of Exact k-Nim
Endre Boros, Vladimir Gurvich, Nhan Bao Ho, Kazuhisa Makino, Peter Muršič, 2018, original scientific article

Found in: ključnih besedah
Summary of found: ...Moore's Nim, Exact Nim, impartial games, P-position, Sprague-Grundy function...
Keywords: Moore's Nim, Exact Nim, impartial games, P-position, Sprague-Grundy function
Published: 22.05.2019; Views: 258; Downloads: 85
URL Full text (0,00 KB)

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