Search results for "production [pi]"
showing 9 items of 79 documents
AN AGENT BASED ARCHITECTURE FOR MANUFACTURING E-MARKETPLACES
2005
This chapter presents the Agent Based Architecture developed within the research project, titled "Process and Production Planning in manufacturing Enterprise Networks". As mentioned in Chapter 1, the architecture has been developed to support “added value services” in neutral linear e-marketplaces, i.e. in virtual districts. In this chapter the architecture will be described from a functional and dynamic point of view by using the formalisms used in the project. In particular, from a functional perspective, the architecture is described by using the IDEF0 formalism, while its dynamics are specified by UML activity diagrams.
Food safety risk analysis from the producers' perspective: prioritisation of production process stages by HACCP and TOPSIS
2018
[EN] From the manufacturers perspective, the Hazard Analysis and Critical Control Point (HACCP) system nowadays represents the mainly way to implement the food safety risk management in food industries. Nevertheless, the identification and prioritization of hazards as the outcome of the first principle of HACCP is not sufficient to identify production process stages that more significantly and critically contribute to the consumer¿s risks. With this recognition, the present paper proposes a Quantitative Risk Assessment (QRA) approach based on HACCP and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to individuate production process phases on which implementing co…
Scheduling a cellular manufacturing system with GA
2002
The flexible manufacturing cell scheduling problem is considered with a multi-objective approach, pursuing together makespan minimisation and the in process job wait minimisation. The formulation of the scheduling problem is discussed, analysing how to generate well suited sequences, like generalised permutation sequences, and the proper construction of a JIT timing of activities. An evolutionary sequencing algorithm based on both classic genetic operators and hybrid operators is then proposed. The hybrid operators have been introduced to construct highly fit initial population, to perform periodically a local search on the population and to maintain enough genetical diversity in the actual…
INTEGRATED SYSTEMS FOR PLANNING AND RESOURCES MANAGEMENT IN COMPANIES
2014
Information is one of the most valuable resources of a company, since with it and around it the whole set of business processes unfold within companies. Till using internet companies were eager to find information that was necessary for the functioning and development of the company; now things have changed radically: the information is abundant and is provided through all possible channels; today, in order to thrive you have to „choose" and to filter the information to remain competitive on the market you are active on. The performance of an enterprise is influenced by its ability to adapt itself to the environment, by the effectiveness of its actions in capitalizing opportunities, by its …
Planning Production Preparation Processesusing The Critical Chain Method
2017
This paper explains the usefulness of critical chain project management for planning production preparation processes. A synthesis of issues of project management and production preparation processes is presented, and a conceptual model of concurrent design processes using the critical chain method is developed. The proposed model of planning production preparation processes enables improving the effectiveness and economic efficiency of new product development. The main assessment indicators of efficient project management in production preparation are: shortening the preparation time of new product development, rational use of resources, and reducing the risk of failure. The proposed appro…
PRODUZIONE DI RIFIUTI A RISCHIO INFETTIVO E INDICI DI COMPLESSITÀ IN UN “CENTRO TRAPIANTI”
2015
Questo studio analizza la produzione di rifiuti a rischio infettivo in una grande struttura ospedaliera specializzata per le attività di trapianto: Ismett (Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione), che si trova a Palermo. Sono state determinate le relazioni fra la quantità e la composizione dei rifiuti, da una parte; la complessità della struttura e la natura delle cure erogate, dall’altra. In letteratura si trovano regolarmente i risultati di ricerche sulla produzione di rifiuti a rischio infettivo nei più diversi Paesi del mondo; i dati pubblicati provengono quasi esclusivamente da Ospedali Generali, anche complessi e di Alta Specializzazione. Tali dati po…
Simultaneous optimization of harvest schedule and measurement strategy
2013
In many recent studies, the value of forest inventory information in the harvest scheduling has been examined. Usually only the profitability of measuring simultaneously all the stands in the area is examined. Yet, it may be more profitable to concentrate the measurement efforts to some subset of them. In this paper, the authors demonstrate that stochastic optimization can be used for defining the optimal measurement strategy simultaneously with the harvest decisions. The results show that without end-inventory constraints, it was most profitable to measure the stands that were just below the medium age. Measuring the oldest stands was not profitable at all. It turned out to be profitable t…
Teaching programming by emphasizing self-direction: How did students react to the active role required of them?
2013
Lecturing is known to be a controversial form of teaching. With massed classrooms, in particular, it tends to constrain the active participation of students. One of the remedies applied to programming education is to use technology that can vitalize interaction in the classroom, while another is to base teaching increasingly on programming activities. In this article, we present the first results of an exploratory study, in which we teach programming without lectures, exams, or grades, by heavily emphasizing programming activity, and, in a pedagogical sense, student self-direction. This article investigates how students reacted to the active role required of them and what issues emerged in …
Analysis of the Potential of an Increase in Yeast Output Resulting from the Application of Additional Process Wastewater in the Evaporator Station
2019
This paper reports the results of an analysis of process wastewater streams in the context of an increase in yeast production. This research is based on the analysis of data from the biggest yeast factory in Europe. The research presented in this paper involves the analysis of the influence of direction of additional wastewater into the evaporator station on yeast production. In the process wastewater, nitrogen is mainly present in organic forms. The analysis reported in this paper involves the concentration of total nitrogen in wastewater streams, as it is the main parameter applied to determine the amount of wastewater that can be applied in agricultural fields. Directing additional waste…