M11 - Production ManagementReturn

In a system of production and consumption, sustainable supply chain management plays a crucial role in overseeing and curbing excessive waste. This research introduces two interconnected supply chains dedicated to waste elimination within the production and consumption processes. The study integrates the tenets of the circular economy (CE) explicitly emphasizing the 3R concepts, which are Reduce, Restore and Recycle. Within this framework, the initial product in the primary chain follows degradation and transforms into raw material for the production system of the secondary chain (secondary production facilities). When transporting used products to recycling facilities, losses may occur due to leakage from the containers during transportation. The unique contribution of this study is determination of the optimal values for price discounts and container leakage costs, emphasizing a key aspect of the CE: the reduction and recovery of discarded items in successive stages. Mixed-integer nonlinear programming is employed for the dual supply chain to optimize the joint cost function using classical methods. A noteworthy numerical outcome is established to validate this concept: with an increase in the leakage cost per container from $5 to $10, the overall supply chain costs are immediately reduced by approximately 90%.

Public administration significantly changes during last years. One of main reforms is switch from administration to management, based also on implementation of private management tools in the public sector. The impact and outcomes of such approaches are not only positive, especially in specific conditions of Central and Eastern European countries. Because of this such approaches shall be introduced carefuly, and on case by case basis. As the part of public administration reform Slovakia introduced the experiment to measure performance of state administration offices in four dimensions: professional quality of performance (the quality of administrative actions), client satisfaction, employee satisfaction, efficiency of performance - of delivery of products. Only last three objectives were met by the experiment, and it was stopped in 2003. In spite of this, this experiment may serve as important lesson for future similar attempts in any of countries of our region.