International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The set of methods and rules in the process of providing raw materials can be considered a strategy for stock management. Each strategy is associated with specific and expected costs. Still, optimally, we can call that strategy that, under the given conditions, leads to minimal expenses related to the material provision of the studied system. Part of the stock management process is establishing the timing of the deliveries, the necessary volumes and the distribution of the incoming lots to the various warehouses and units. The search for optimal strategies is subject to the theory of optimal stock management. This makes it possible to release significant funds frozen in the form of stocks, which leads to increased efficiency of the material resources used. The optimal inventory management strategy and flexibility also lead to improved production processes and reduced and excluded possible interruptions caused by lack or shortage of materials. The stock management process influences the planning, forecasting, and fulfilment of production needs and orders.
The elements of the business system described so far, in which raw materials, materials and their stocks have a significant impact, show the importance of the stock management strategy of each economic unit. That the chosen and functioning system is optimal is a substantial part of the overall success in any enterprise or other form of business process implementation.

Following some theoretical investigations, through the analysis of educational policy documents, we will compare the education system in Romania and France. The motivation for choosing this theme for analysis was represented by the numerous similarities between the two education systems. The analysis criteria of the present study considered the following criteria: the structure of the education system, educational policy principles, purposes, costs.

Regardless of the length of the period of use of the equipment, due to a change in technology, an increase in maintenance costs or the introduction of new requirements with a change in legislation, the machines become obsolete and are disposed of. The main methods for utilization of tractors and self-propelled agricultural machinery are considered. The equipment necessary for the disposal is also described. The methodology for determining the costs for utilization and the value of the equipment for utilization of the whole machine, element-by-element utilization and utilization after defecting has been supplemented.

The paper presents a technical and economic background to the need for modernization of modern tractors and combines. The presented method allows forecasting the demand for modernization of equipment. It allows to develop the program of action to improve the quality of machines, assess their real potential, develop of strategic and operational planning for the development of modernization, organize activities of the technical service. This article proposes a method for determining the demand for modernization of agricultural machinery in technical, repair and technical enterprises, based on the analysis of statistical and expert data characterizing their influence on the demand for research. It is justified that repair company must confidently organize an active advertising campaign to promote modernized machines to the market.

The technological and social environment in which we live changes very quickly. Competition grows from time to time, so it is a constant tendency towards product and service providers to achieve a competitive advantage, and thus satisfy the needs of consumers. In order to achieve the above, the organization is often at a crossroads where important decisions are needed, which are most often related to the investment in new equipment or technology. Also, in parallel with the decision to invest in new equipment or technology, a decision is made to retain or upgrade the existing one. In order to make the right decision, often well-known postulates of engineering economies are often used, which include systematic assessment of the economic values of the proposed solutions. In order for economies to be acceptable, solutions must show the existence of a positive relationship between long-term benefits and long-term costs, as well as ensuring the success and survival of companies in the market. In this paper, the economic costeffectiveness of replacing the existing electrolytic welding technology with insoluble electrode in inert gas (TIG), the new FSW welding technology is considered.

Risk analysis is a process with a detailed identification of risks, determine their range and examines the interaction of these risks. Each process or human activity are influenced by many risks. As well as in rail transport there are many risks which hare accrue from the operation. Risk is defined as the chance that something will happen what will affect the goals and is measuring by results or estimate. We can also risk defined as the product of the likelihood of an adverse event (phenomenon) and consequences (outcomes). On one side is the risk connected with the hope of achieving a good financial results, but on the other side with the danger of business failure that brings losses. The aim of this paper is the proposal of a tariff taking into account the risk from unoccupied capacity of passenger trains. Pricing of selected risk we will eliminate this adverse event.

The competition between operators in the public tender in ordering process of train paths in long-distance rail passenger transport is very significant. The partial liberalisation of the rail market in the European Union was already underway in 2010, when all European railway companies with the necessary licenses gained access to railway infrastructure. One of the current objectives of the common transport policy laid down in The fourth railway package is to open up the market for national rail passenger services in all Member States from 2019.In 2009, the EU Regulation No. 1370/2007 came into force, which sets out the selection procedures for the award of contracts in public rail transport. There are two forms of contracts for transport services in the public interest, either by tendering the competition for traffic performance, or by directly entering the selected railway company. The aim of this article is to analyse steps of the Slovak government in the first public tenders to provide subsidized transport of a selected line and to determine conditions for this tender. This is a significant moment in the railway market in the Slovak Republic, preparing the opening up of the market for domestic long-distance passenger rail transport.