In this article, the conditions and determinants of introduction development circular economy (CE) in Poland were presented against background widely discussed essence economy, with particular emphasis on Polish mining sector. addition, European Green Deal—an action plan for a sustainable entire Union, was discussed. Particular attention paid to role human resources area supporting research sti...

Dispatching vehicle fleets to serve flights is a key task in airport ground handling (AGH). Due the notable growth of flights, it challenging simultaneously schedule multiple types operations (services) for large number where each type operation performed by one specific fleet. To tackle this issue, we first represent scheduling as complex routing problem and formulate mixed integer linear prog...

User’s choices of conical picks currently involve specifying their material and geometric parameters (functional requirements), incorporating the place conditions work (operational requirements). The selection is usually made based on solely one criterion, which price. Thus, at stage both purchase operation, quality picks, as well matching for a specific machine, are not assessed. problem defin...