Publications | Master Thesis


Find below a 100-words version of my CV. For more details, check my LinkedIn profile.

Work experience





Some publications in which I participated as part of my job in the University of the Balearic Islands, and also much later as a teacher.

Title Construyendo la web de un Instituto de Educación Secundaria
Authors David Sánchez Crespillo
Conference Congrés Internacional Virtual d’Educació CIVE 2008 (Palma de Mallorca, Spain)
Date April 2008

Title Visualization for cooperative architecture design system
Authors Yuhua Luo - Sanchez, D. - Bennasar, A. - Fornes, J. - Serra, J.C. - Huescar, J.M.
Journal Sixth International Conference on Information Visualisation, 2002. Proceedings.
Date November 2002

Title A Remote Cooperative Desing System Using Interactive 3D Graphics
Authors Luo, L.; Galli, R.; Sánchez, D.; Bennàsar, A.; Fornés, J.; Serra, J. C.; Huéscar, J. M.; Gayà, J.
Journal 001289 - International Journal of Image and Graphics Vol: 1 Number: 1. Pages: 153 to 167 (Singapore)
Date January 2001

Title A Cooperative Architecture Design System via Communication Network
Authors Yuhua Luo, Ricardo Galli, David Sánchez, Antonio Bennassar, Antonio Carlos Almeida, Miguel Dias
Conference 8th International Conference on Computing in Civil and Building (Stanford University, Silicon Valley, CA, USA.)
Date August 2000

Title Implementation of Mechanisms for Concurrent 3D Design and Visualization
Authors David Sánchez Crespillo, Antonio Francisco Bennasar Obrador, Ricardo Galli Granada and Yuhua Luo
Type of participation Communication
Conference IEEE/International Conference on Information Visualisation (IV2000). London (United Kingdom)
Date July 2000

Title The Multi-Site 3D Editing Tool For Architectural Production Integration
Authors David Sánchez, Toni Bennasar, Juan Fornés, Ricardo Galli, Juan Manuel Huéscar, Juan Carlos Serra, Yuhua Luo, Manuel Gamito, Miguel Dias, Marc Albiol, Juan Arias
Publication ESPRIT Project No. 26287 M3D, Deliverable 2.1. EC
Date April 2000

Title Sistema Cooperativo de Diseño en 3D
Authors Yuhua Luo, Ricardo Galli, David Sánchez, Juan Fornés, Antonio Bennasar, Juan Carlos Serra, Juan Manuel Huéscar, Josep Gayà
Type of participation Communication
Conference I Seminario del Programa Nacional de Aplicaciones y Servicios Telemáticos (SPAST-I). Pamplona (Spain)
Date December 1999

Title Un editor 3D interactivo para trabajo cooperativo
Authors David Sánchez Crespillo, Ricardo Galli, Yuhua Luo
Type of participation Communication
Conference IX Congreso Español de Informática Gráfica. Jaén (Spain)
Date June 1999

Title M3D technical specifications
Authors R.Galli, Y. Luo, D. Sánchez, S. Alves, M. Dias, R. Marques, A. Almeida, J. Silva, J. Manuel, B. Tummers
Publication ESPRIT Project No. 26287 M3D, Deliverable 1.2
Date April 1999

Title M3D Prototype
Authors Marco Moita, Sérgio Alves, Renato Marques, Manuel Gamito, Jorge Silva, José Manuel Fonseca, Miguel Vilar, Ricardo Galli, David Sanchez, Yuhua Luo
Publication ESPRIT Project No. 26287 M3D, Deliverable 1.5. EC
Date April 1999

Master Thesis

My Master Thesis for the Degree of Engineer in Computer Science, in the University of the Balearic Islands, was defended the 20th of October 2000, and awarded with honors.

The title of the thesis was Desarrollo de técnicas cooperativas para un editor de objetos 3D (Development of cooperative techniques for a 3D editor) and was directed by the professors Ricardo Galli Granada and Yuhua Luo.

PDF Icon Desarrollo de técnicas cooperativas para un editor de objetos 3D (in Spanish)


Development of cooperative techniques for the editing of 3D objects, by applying and extending the Mu3D high level protocol. These techniques are applied to the basic operations of an architecture-oriented 3D editor. The operations include: Concurrency control, data management, basic editing (object insertion and deletion, interactive geometric transformation, material editing and lightning parameters), clipboard operations and undo.

The system implements a completely distributed architecture, and uses JESP, a cooperative work support platform, which deals with the session and group communication management. On this platform, the M3D Editor, an interactive architecture-oriented 3D editor, is executed.

The special features of the 3D data (high amount of data, need of fast interactive visualization) require to provide local access to the data. Due to this, data are replicated on each workstation, following a paradigm called distributed shared memory with active replication.

Data replication makes necessary keeping its consistency on all the replicas. Every modification on the replicated data has to be notified to the rest of users. On the other hand, notification messages should be as small as possible, to allow updates at interactive speed.

The concurrent access control is implemented using an implicit locking system, based on selections of the 3D objects.