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The 18th International Symposium on Operations Research in Slovenia (SOR 2025) took place in Bled, Slovenia, from September 24 to 26, 2025. The event was organized by the Slovenian Operations Research Society Informatika in cooperation with the Universities of Ljubljana and Maribor.
The N.EA research group and the Department of Operations Research in Katowice were represented by Prof. Tomasz Wachowicz, Dr. Anna Gorczyca-Goraj, and MSc. Krzysztof Grzanka, who delivered research presentations during the conference.
The meeting also provided an opportunity for an exchange of commemorative diplomas between representatives of the University of Ljubljana and the University of Economics in Katowice.
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We warmly invite you to attend the 26th edition of the International Conference on Group Decision and Negotiation (GDN 2026), which will be held from June 21 to 24 June 28 to July 1, 2026, at the (UEKat) – the oldest public university in the Silesia region, founded in 1937. UEKat is one of Poland’s five public economic universities and is located just a few minutes from the city centre of Katowice, the capital of the Upper Silesian Metropolis (Metropolis GZM) – only eight minutes by tram from the central marketplace (see route on Google Maps).
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In the last week of July, the 12th issue of the newsletter published by the GDN INFORMS Section was released. The newsletter features the latest updates from the life of the section. The current issue, along with all archived editions, is available on the section’s website: https://gdnconference.org/newsletter/
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Yesterday, as online first, the latest paper was published in the ITOR (International Transactions in Operational Research) journal, written by the research team of late Gregory Kersten, Tomasz Wachowicz, and Ewa Roszkowska. It continues the series of studies devoted to behavioral issues in negotiations. In this paper, we analyze how the motivational mix determines the negotiators' accuracy in the prenegotiation preparation, in particular, in building the scoring systems that reflect their preferences well.
The paper is accessible through a shareable link: https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.12995
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We are happy to inform, that a group of Polish researchers and academicians who were collaborating with late professor Gregory Kersten has undertaken an initiative of organizing a special issue of one Polish scientific journal, which would be devoted to professor Kersten, his research and scientific legacy. Thanks to the engagement of many of our colleagues, such a special issue is going to be organized by the Control and Cybernetics journal, issued by the Polish Academy of Sciences and indexed in Scopus. The guest editors of this special issue are Ewa Roszkowska (University of Bialystok), Bogumił Kamiński (Warsaw School of Economics) and Tomasz Wachowicz (University of Economics in Katowice).
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