a new way of thinking is influencing the behaviour of both consumers and firms: any tourism activity has a sizeable environmental impact and the roots of environmental problems in this industry lie inhuman behaviour. accordingly, in recent years tourists have been taking into account the environment as afactor in their purchasing decisions and firms are using this factor in their competitive po...

For many years, purchasing and supplier performance evaluation have been discussed in both academic and industrial circles to improve buyer-supplier relationship. In this study, a novel model is presented to evaluate supplier performance according to different purchasing classes. In the proposed method, clustering analysis is applied to develop purchasing portfolio model using available data in...

A. Csikósová, M. Antošová, R. Weiss, Fakulty of Mining, Ecology, Process C ontrol a nd G eotechnology, Technical Un iversity o f Ko šice, Slovakia The present paper focuses on the effi ciency improvement of the strategic raw material (iron ore) purchase process in a metallurgical company and its management with the aim to minimize costs. The authors have come up with the proposals for an effi c...

This note addresses scenarios of buyers purchasing rate along paths in a nonhierarchical communication network. A sum bid game is proposed in which each buyer submits a bid, also equal to a payment, and the network allocates rate in a weighted proportionally fair fashion, with the bids as the weights. This is in contrast to an itemized bid game, considered recently by Johari and Tsitsiklis, und...

Although supplier alliances are widely considered as an effective source of competitive advantage by firms operating in uncertain business environments, the literature offers inconsistent suggestions concerning how environmental uncertainty affects supplier alliances. The framework of transaction cost economics (TCE) suggests that, when environmental uncertainty is present to a nontrivial but n...

This paper studies the benefits of money-back guarantees (MBGs) on the seller in the centralized supply chain under the presence of strategic consumers. Following that, supplier and supply chain performance are analyzed in the decentralized supply chain. In the presence of the strategic consumer behavior, the seller initially offers the MBGs in the selling season but may sell the leftover inven...