Organizacija, letnik / volume 40 Summaries številka / number 1, januar / january 2007 Ljubica Knežević Cvelbar UREDNIŠKI ODBOR REVIJE / EDITORIAL BOARD Zvone Balantič Igor Bernik Marko Ferjan Jože Gričar Alenka Hudoklin Jurij Jug Miroljub Kljajić Jure Kovač Matjaž Mulej Branko Selak Goran Vukovič Jože Zupančič ODGOVORNI UREDNIK / EDITOR Jože Zupančič SOUREDNIKI / CO-EDITORS Marko Ferjan Boštjan Gomišček Jože Župančič SVET REVIJE / EDITORIAL COUNCIL Rado Bohinc, Univerza v Ljubljani Jožko Čuk, Gospodarska zbornica Slovenije, Ljubljana Gabrijel Devetak, DEGA, d.o.o. Nova Gorica Ferenc Farkas, Univerza v Pecs-u, Madžarska Jože Florjančič, Univerza v Mariboru Michael Jacob Fach Hochschule, Trier, Nemčija Marius Janson, University of Missouri, St-Louis A. Milton Jenkins, University of Baltimore, ZDA Mehdi Khorowspour, Univerza v Pennsylvaniji, ZDA Janko Kralj, Univerza v Mariboru Tone Ljubič, Univerza v Mariboru Hermann Maurer Technische Universität, Graz Austria Jožef Ovsenik, Univerza v Mariboru Björn Paape RWTH - Technical University, Aachen, Nemčija Iztok Podbregar Vlada Republike Slovenije Jan Pour, Ekonomska univerza Praga, Češka Vladislav Rajkovič, Univerza v Mariboru Marjan Rekar s.p. poslovno svetovanje Vurnikova 2, Ljubljana Gabor Rekettye, Univerza v Pecs-u, Madžarska Henk G. Sol, Technische Universiteit Delft, Nizozemska Brian Timney, The University of Western Ontario Ivan Turk, Univerza v Ljubljani Jindrich Kaluža, Univerza v Ostravi, Češka Drago Vuk, Univerza v Mariboru Stanislaw Wrycza, Univerza v Gdansku, Poljska Influence of the Company Performance and Ownership Structure on CEO Turnover: the Evidence of Slovenia The goal of the article is to research relation between CEO turnover, company performance ownership structure concentration and change. The empirical evidence presented in the article is based on the sample of 211 Slovenian companies in period 1998- 2002. As expected the relation between CEO turnover and company performance is inverse. Ownership concentration is not an efficient corporate governance mechanism. Opposite change in the ownership structure influence on the management turnover in the poorly performing companies. Key words: CEO turnover, ownership structure, ownership concentration, ownership change corporate governance, agency theory Marko Jakšič, Borut Rusjan Bullwhip Effect in a Supply Chain An important phenomenon in supply chain management, known as the bullwhip effect, suggests that demand variability increases as one moves up a supply chain. This paper gives a review of bullwhip effect, from its causes to its consequences and finally cures, which can dampen its negative effects. Part of its causes can be attributed to demand variability and the lack of communicating the actual demand between a supply chain partners. The other part is linked with obstacles to coordination in a supply chain. We suggest that orientation towards common management of information and application of managerial levers to achieve coordination, can limit the bullwhip effect and make a supply chain more profitable. Keywords: supply chain management, bullwhip effect, inventory management, demand forecasting 2