Applied Mechanics and Materials Vols. 809-810

Abstract: Within circular economy, it is defined only the reuse of raw materials from which these products were manufactured and does not take into account the change of destination of recyclable products.This paper is dedicated to creating some brainstorming processes finalized with a proposal to investigate the elements of a windshield wiper motor, which will be used to achieve an electromechanical system with sensors, that allows access to the house (kennel, shelter, etc,) for dogs or cats. Our brainstorming session aimed at finding of new uses for worn windshield wiper. My proposal was the next: worn windshield wiper to be used as a key element for an "access door for dogs/cats". As a research method we have used multi-criteria analysis.

Abstract: The problem of quality and customer orientation are the most important leverage in obtaining success. Over the time, the influence of human resources in terms of training, controlling and shaping client expectations has gained significant meanings. Research in this field has led to the formulation of the hypotheses according to which human resources can represent a vital element in obtaining a competitive advantage. In line with the importance of the topic addressed, the main objective of these scientific approach is to identify the current problems related to the quality of Romanian tourism services and to propose a improvement program using the six sigma method. The paper provides an excellent resource for many researchers who are engaged in research and applications of Six Sigma in the tourism industry. Moreover the dearth of literature on the use of Six Sigma in the tourism sector makes this paper count.

Abstract: Examination of the factors determining the success or failure of a business in an enterprise, facilitated the creation of specific methods of analysis and diagnosis of business activity in the industry by determining the role of entrepreneurial skills. Environmental analysis method, competitiveness and industrial company is SWOT analysis. SWOT analysis is considered a complex research of economic, technical, and management of industrial production that characterize a society that identifies the strengths, weaknesses, opportunities, threats and causes it generates, make recommendations to eliminate or minimize the issues and / positive or negative recovery. Production management conducted using SWOT analysis entrepreneurial skills in industrial companies can be used as a model for defining entrepreneurship and building strategies as a basis for the creation of national and international brands of industrial. For choosing the optimal analysis of entrepreneurial skills in industrial companies is necessary to maintain cost efficiency through economic links created between departments of industrial society. Development of industrial values is based on sustainability and management of production, which can be created between technical and economic services company. Promoting entrepreneurial skills in the management of industrial companies is focused on strengths as well as opportunities arise, a very thorough SWOT analysis and professional company that can radically change the industrial market.

Abstract: The paper presents the most important issues related to the scheduling of production orders in real manufacturing systems. In the elaborated method an and/or type graph of operations planning sequence of a production order is proposed for modelling the production system load. In a single structure the graph takes into account alternative routes of a production order realisation and the precedence constraints in presence of complex, hierarchical structures of processes. Two modelling ways of that process using the "operation on the edge" or "operation on the node" notation are also presented. In the developed method scheduling strategies, which have a major impact on the order of placing operations in the schedule and handling of production lots are also considered. By a state space graph representation of scheduling problem, using graph theory, it can be possible to analyze the structure and complexity of both the modelling problem and the graph search techniques.

Abstract: The paper presents a theme of research through the analysis of flows' modelling and simulation in a flexible manufacturing system. It is studied the simulation with discrete events of a real manufacturing line with the software Delmia Quest. The objectives of this paper are to modelling and simulate the manufacturing system and to choose the properly probability distributions of a cycle time of each machine from this layout. A comparison of three distributions is presented and SCL implemented program will automatically display the values resulting from the manufacturing system simulation.

Abstract: The challenges of choosing methods of material flow control are bigger due to the fact that they authorize the quantity of production in each processing stage so that the products get to the customer at the right moment and in the quantity wanted, while minimizing the costs and stocks of the production system. For this reason, the objective of the research performed in this paper is to determine the impact of Kanban control methods on the performance indicators, total cost and interoperation stock of a production system, given the fact that many system parameters are variable. The main conclusion drawn from the results is that when the input parameters vary within certain limits the control method with the best performance indicators for a production line can be established following the methodology used in this paper. Methodology is a useful tool in the hand of those who design production systems because it allows the choice of the control method which provides the best performances, at least from the viewpoint of two indicators: costs and stocks.

Abstract: A single machine queuing system with setup/closedown times generally distributed is considered. Production tasks enter the production system with exponentially distributed interarrival times and are served by times assumed to be generally distributed. Arriving production tasks form a single waiting line and are served in the order of their arrivals. A production task is stored in a finite-capacity buffer if it arrives and the machine is busy or setup activities are done. Whenever a production system is empty, the machine is stopped by a closedown time. The machine needs a setup time before providing the service of the first task after the idle time.

Abstract: Nowadays in the era of advanced stage of Lean Manufacturing concept forces manufacturers to research of new idea of the production flow organization and to implement more and more innovative organizational solutions. The article presents the authors concept of implementation the combination of continuous flow and concurrent multi assortment production. Continuous flow is an approach to discrete manufacturing that contrast with batch production and is associated with just-in-time and Kanban production. The goal is an optimal balanced line. The paradigm aim is to achieve single-piece flow. For this purpose the similarity of the products that use the shared resources and start their production one by one in a predetermined sequence is searched. In addition, it is recommended to transform the internal setup into external one for eliminating investment in set-up times. This concept is similar to the group technology developed down in 70’s and based on the classification of products into four groups.

Abstract: In the paper the concept of using methods and models of the game theory to solve problems in the area of production planning and control is presented. The problems concerning selection of the most favorable routes from given circumstances and for available set of alternative routes in discrete multi-assortment production systems is presented. Considered in this paper the problems related to the allocation of adequate resources to carry out specific production plan of production orders. Combinatorial complexity of those problems is high especially at the operational level. Therefore heuristic or analytical methods are often used in the process of decision support, without indicating the optimum solution. Conducted research in this area are also related to AI methods. The proposed approach in this paper, is based on the game theory in the production planning. The tools of game theory have been used so far mainly in the area of production planning at the levels of strategic and tactical planning. But recently, arises increasingly interest in using game theory in the field of production planning at the operational level. In this case, the player term is replaced with the agent or object term that represents (not the entity or person as it is in the classical approach) production order, production process or package of production orders.

Abstract: In the days of fierce competition, rapid changes and new technologies, production, and above all, production planning and control cannot be implemented in isolation to changes in the market. The ability to quickly adjust to changes, being flexible is now essential for high tech companies. One of the key area of production management, that must continuously evolve by searching for new methods and tools for increasing the efficiency of decision-making process is the area of production planning and control. In solving the problems associated with production planning are increasingly used advanced simulation programs. They support the planners, especially in situations related to changes in the assortment, or the introduction of new products into the market. A practical example of using the simulation program for production planning is presented in the paper. It is shown that an advanced simulation program can be an effective tool used in decision making area. The construction of the model, and performed experiments are crucial for enterprises where among other things punctuality and flexibility are the most important elements. A short time for the results of the simulation allows for quick response and, if necessary, make changes to the model by planners to achieve the best results with the given parameters associated with the required to complete the production orders.