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-The major purpose of this paper is to present a way of solving problems through so-called visual planning and programming using object-oriented concepts. This paper describes the process of UML modeling for solving the traveling salesman problem using one of the metaheuristic-genetic algorithms. The analysis and problem solving in this way has many advantages just because it provides a clear definition of requirements and specific plan that we will later use to create specific applications. This is a good way to resolve because the UML describes the source code, models help to visualize the system as it is or what it should be and allow you to determine the structure and behavior of the system. Static and dynamic diagrams implemented in developing tools for modeling, as well as a description of specific applications and testing are mentioned. With this approach we describe modeling tool that can be used in the development of specific solutions and a way of establishing explicit links between concepts and execution code.

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Ivanjica. The received answers were classified into five groups: infrastructural conditions, access to public services, farm enlargement, market access and availability of funding sources. To solve these problems, the authors propose, among others, investment in infrastructure, change in the taxation of agricultural land, reforming agricultural cooperatives and designing new financial instruments according to the needs of farmers and local specificities. The role of modern cooperatives, where active farmers, land owners and investors will contribute their knowledge and capital, are especially emphasized by the authors.