Catálogo de publicaciones - libros

In order to make fast 3D visualization and operation to be feasible for large-scale global vector data, in this paper, one method based on real-time simplification to vector data is presented. This method use a list of expression error limitation to simplify line objects in the iterative process, and the result is recorded by coding. In order to realize effective data organization, line objects are divided into different priority types according to its attributes and indexed with quadtree. In addition, proper original data with certain scales are suggested to select. At last, one demonstration is given, and the result shows that the method is efficient.

Visualizing complex volume data sets often involves collaborative work of geographically distributed domain scientists and visualization experts. Integrating inputs from participants is critical to the success of such collaborative scientific visualization tasks. In this paper, we introduce a novel rule-based collaborative volume feature visualization system for sharing and integrating multiple users’ knowledge in a collaborative environment. Our system is effective at combining multiple users’ efforts on locating complex features.

This paper presents the general philosophy, features and few aspects related to the implementation and underlying technologies of MaGIA, an Internet-based multi-user system designed for a collective and collaborative construction of knowledge models represented as concept maps. The use of the system can cover a wide range of purposes, from a theoretical discussion and construction of formal models to a support for collective What makes MaGIA an interesting tool is the emphasis put on a construction of such maps. In fact, one of the distinctive features and objectives of the system is to offer an enabling tool for a multi-user, bottom-up construction, where users can intervene, freely contribute and extend concept maps and where collective and collaborative multi-user map construction can take place in asynchronous as well as in synchronous way.

Collaborative simulation technology is an important factor in improving the efficiency of complex product design. Although High Level Architecture (HLA)-based simulation technology can meet the needs for simulation in product design, it’s also marked by many deficiencies. In this paper, we focus on the introduction of web services into HLA simulation system and propose a Web Services-Based HLA Collaborative Simulation Framework (WSHLA). The framework uses web services to encapsulate the invocations of HLA services and then make simulation system more interoperable and reusable. Firstly, the overall structure of WSHLA and the proxy, which acts on behalf of a federate and interacts with Runtime Infrastructure (RTI), are presented. Then, the detailed design and implementation process of WSHLA are discussed. Experimental results show that, using web services, the framework can make up for the deficiencies in HLA simulation system and ensure WSHLA-based collaborative simulation goes smoothly at the expense of some time.

The team of engineers designing and implementing distributed control system software must communicate within a multidisciplinary environment. One of the main problems is the interaction between hardware and software solutions. Software project presumptions may not be based only on minimum hardware requirements and on technology rules. Modern distributed control systems embrace all aspects of a complex and widespread object. Hence, every modification within any discipline requires interference into the system and validation of its new features, which in turn constraints effectiveness of designing. This paper discusses how to increase effectiveness and speed up validation, in a standardised CAD environment, by using: Multi-Agent System in order to limit the number of interactions between particular subsystems, ontology for assisting topology description and properties of system entropy for assessment of introduced solutions. The proposed system was implemented and worked out in a biotechnological pilot plant.

There are increasing requirements for collaborative scheduling (CS) in supply chain management (SCM). CS in construction supply chain (CSC), which involves multiple partners, such as general contractor, subcontractors, and material suppliers, can be seen as a multilevel decision-making system with hierarchical structure. Adopting the decomposition-coordination thought of large scale system theory and using the multilevel programming theory, a two-level programming model for CS decision making is established to find satisfactory solution for every partner in CSC. This model has the merit of paying attention to the maximization of profit or minimization of cost of all partners located at different decision-making level in CS process. The algorithm of this model is provided, which is combined with the first level programming adopting simulated annealing algorithm and second level programming using discrete search algorithm. Finally, an illustrative example of CS in a CSC is presented. The two-level programming method provides a new way to improve collaborative decision making in CSC. This research makes a contribution to the body of knowledge of scheduling.

Steady pace (rhythmicity) of work is a relevant parameter reflecting the performance of production systems. A coefficient (index) of the steady pace is used for quantitative evaluation of a production system’s performance. Various rhythmicity indices often yield different and even conflicting results. The application of logically consistent axioms to a set of indices allows us to identify indices accurately describing a steady pace of production. A case study of rhythmicity of suspended aluminium ceilings’ manufacture at one of the enterprises over the period of 5 years divided into quarters and months is provided.

In system development, the crucial step is the architecture design. This paper proposes a multi-agent based architecture for petroleum supply chain. The nested architecture can encapsulates the complex system, and number of supply chain partners can effectively interact through communications between agents.

The paper presents a cooperative design approach based on multi-disciplinary knowledge modeling for automobile development. The design knowledge from multidisciplinary domain is obtained to establish multidisciplinary knowledge model. Then multidisciplinary cooperative design method allows multidisciplinary designer to synthetically coordinate and design considering multidisciplinary knowledge. The method described in this paper was used to develop knowledge driven multidisciplinary cooperative design system, which is applied to automobile development processing.

This paper proposes a systematic approach to integrate domain-dependent design tools in artificial bone scaffolds process. Integrated solution of CAD modelling and properly analysis of biomedicine knowledge are utilized to design complicated bone scaffolds. FEA and CFD are comprehensively analyzed for the mechanical and internal micro circulation properties. A case study of a successful artificial bone scaffolds model demonstrates that the cooperative design methodology can facilitate the design in the multi-physics domain substantially.