Sven William Nissen

Local Density Sven

We survey computational approaches and solutions for discovering locally dense groups in social and complex networks. A graph-theoretical property is local if it is definable over subgraphs induced by the groups only. In this context, we discuss perfectly dense groups (cliques), structurally dense groups (plexes, cores), and statistically dense groups (η-dense groups). We give algorithms (and h...

Memorial: Sven-Ivar Seldinger

SVEn - Shared Virtual Environment

This paper presents a system for a shared virtual experience which was developed within a student project. The main idea is to have two or more persons at different locations, who can interact with each other in the same virtual environment. In order to realize this idea every person is motion-captured and wears a head-mounted display (HMD). The virtual environment is rendered with the Unity ga...

Sven Hartmann : List of Publications

[3] I.Y. Song, M. Piattini, Y.P. Chen, S. Hartmann, F. Grandi, J. Trujillo, A.L. Opdahl, F. Ferri, P. Grifoni, M.C. Caschera, C. Rolland, C. Woo, C. Salinesi, E. Zimnyi, Ch. Claramunt, F. Frasincar, G.J. Houben, Ph. Thiran, eds.: Advances in Conceptual Modeling Challenges and Opportunities. vol. 5232 of Lecture Notes in Computer Science, Workshop Proceedings of the 27th International Conference...

Single-Site Nissen Fundoplication Versus Laparoscopic Nissen Fundoplication

BACKGROUND Advances in minimally invasive surgery have led to the emergence of single-incision laparoscopic surgery (SILS). The purpose of this study is to assess the feasibility of SILS Nissen fundoplication and compare its outcomes with traditional laparoscopic Nissen fundoplication. METHODS This is a retrospective study of 33 patients who underwent Nissen fundoplication between January 200...