This article describes how in volunteer cloud computing systems, some resources are volunteered by the hosts. These systems became more powerful and attractive because they provide a highest power computing. However, to satisfy the user requirements and the system performance in this kind of the...

The article presents the problem of competitiveness of Polish apples. In the paper the quantity of production and international trade of was analyzed. Major importers and exporters of apples were identified. In order to assess the international competitiveness ex post measure has been used. The...