In general companies continuously have to improve their operations to be able to survive in the global competition. They have to be better in utilizing their resources today compared to what they were yesterday. The production systems have changed during the 20 century and factories today do not look like they did hundred years ago. Focus has moved from mass production towards flexibility. The ...

In the publishing process, readers, publishers and writers can profit from structured documents. Adding explicit structural information to a document is currently so costly that it is rarely done. We show an application of graph technology which supports authors by offering a possibility to model the concepts to be discussed and their relationships. These semantical structures can then be seria...

Sammendrag/Abstract: The SPACE project developed a fully functional demonstrator of a system aimed at supporting European citizens moving between countries within the EU and the EEA. The project also established several security requirements for a production system. These are only partially addressed in the demonstrator. This paper presents these requirements and their implications as well as p...

This paper presents a system developed at unicamp for automatically maintaining topological constraints in a geographic database. This system is based on extending to spatial data the notion of standard integrity maintenance through active databases. Topological relations, deened by the user, are transformed into spatial integrity constraints, which are stored in the database as production rule...

This paper presents a LabVIEW application for real time data acquisition for all components of a production system, respecting traceability requirements for a modern digital manufacturing environment. The paper focus on a supply chain which has several sub processes and then we focus on the limitations and problems and introduce a traceability system by combination of horizontal and vertical tr...

Received: May 26, 2004 Accepted: September 15, 2004 Neoplastic diseases have not been widely studied in pigs, although prevalence in slaughter animals has been recorded in several countries in the past four decades. Since most swine are slaughtered at 6 months of age or younger, the most common tumors diagnosed are those that commonly occur in young animals, ie, lymphosarcoma, nephroblastoma, a...

− Ordinary t-timed Petri Nets are used for modeling, analysis and synthesis of random topology production systems and networks. Each production system is first decomposed into production line (transfer chain), assembly, disassembly and parallel machines modules and then their corresponding modular Petri Net models are derived. The overall system PN model is obtained via synthesis of the generic...

Mathematical model describing energetic efficiency (defined as a ratio of energy obtained in the form of biofuel to the sum of energy inputs necessary to facilitate production) of agricultural subsystem as a function of technological parameters was developed. Production technology is characterized by parameters of machinery, topological characteristics of the plantation as well as transportatio...

The authors consider in this paper an integrated forecasting production system of the tracking type. The demand rate during a certain period depends on the demand rate of the previous period. Also, the demand rate depends on the inventory level. Items on the shelves are subject to deterioration. Using a model predictive control approach, the authors obtain the optimal production rate, the optim...

One of the most crucial aspects of Intelligent Tutoring Systems in a collaborative serious game is production rules. Given the large number of interactions and conversation between players, it is difficult to follow student questions and reactions in the game environment. Therefore, creating a sophisticated method to construct production rules for handle the students’ interactions will boost th...