Reverse logistics and its importance in the supply chain

The paper deals with a highly topical issue og Logistics which is called Reverse logistics. The flows of products in supply chains don't end in the moment when they reach the customer. Many products lead second, third or even fourth life after accomplishing their original function. It means that products can generate the value in supply chain more than once. To capture this value we must expand the original supply chain to include new processes that we call reverse logistics. The key to maximizing the value is coordinating the successive product uses in supply chain

The actual structure of the postal transportation network in the chosen postal circuit and the location of the main mail processing and distribution centre in this circuit

This article discusses the possibility of optimizing a particular postal transportation network within the scope of the main mail processing and distribution centres in Žilina, one of four main mail processing and distribution centres of the national postal operator in Slovakia – Slovenská pošta (referred to here, in English, as the Slovak Post). The authors compare the 3-level model of postal transportation network with the 4-level model of postal transportation network that is currently used in areas other than Žilina. When comparing both models, the authors also takes into account the processing operations of postal items required before the mail is delivered to its addressee – both models accept the technological procedures of processing and handling postal items. In addition, the authors of the presented article solves the allocated task through the construction of the distance matrix to find out if the actual location of the main mail processing and distribution centre and its facilities in the city of Žilina is optimal, from the point of view of transportation distance from this centre and the other supporting processing centres located at the second and third levels respectively within the analysed postal transportation network models