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The Efficiency of Telecenters in Social Sustainability Context: A Cambodia Case Study
Sopheak CHEANG,이정동 한국혁신학회 2010 한국혁신학회지 Vol.5 No.1
Telecenter is the most popular application of ICT4D that connects the rural and poor community to the digital world. However, in practice it meets failure more than success due to several factors including the mismatch in design and management, especially, the lack of monitoring on the progress of the project. This paper intends to contribute in telecenter research in the field of performance evaluation by establishing an assessment method from the perspective of social sustainability. Social sustainability, one of the driving forces of telecenter sustainability, can be realized when telecenter is be able to deliver community acceptance content to majority of the local population. In addition to content design, telecenters have to be efficient in their operation by minimizing the resource while maximizing the outcome. Following formative assessment approach focusing on monitoring the progress or outcome (efficiency) of the project, and within the objective of finding a set of efficient telecenters and elements contributing to the performance improvement,this study employs Data Envelopment Analysis to periodically evaluate the operation of 20 telecenters of iREACH telecenter network.
Global hydroelastic model for springing and whipping based on a free-surface CFD code (OpenFOAM)
Sopheak Seng,Jørgen Juncher Jensen,Šime Malenica 대한조선학회 2014 International Journal of Naval Architecture and Oc Vol.6 No.4
The theoretical background and a numerical solution procedure for a time domain hydroelastic code arepresented in this paper. The code combines a VOF-based free surface flow solver with a flexible body motion solverwhere the body linear elastic deformation is described by a modal superposition of dry mode shapes expressed in alocal floating frame of reference. These mode shapes can be obtained from any finite element code. The floating frameundergoes a pseudo rigid-body motion which allows for a large rigid body translation and rotation and fully preservesthe coupling with the local structural deformation. The formulation relies on the ability of the flow solver to provide thetotal fluid action on the body including e.g. the viscous forces, hydrostatic and hydrodynamic forces, slamming forcesand the fluid damping. A numerical simulation of a flexible barge is provided and compared to experiments to show thatthe VOF-based flow solver has this ability and the code has the potential to predict the global hydroelastic responsesaccurately.
The Efficiency of Telecenters in Social Sustainability Context
Sopheak CHEANG,이정동(Jeong-Dong LEE) 한국혁신학회 2010 한국혁신학회지 Vol.5 No.2
Telecenter is the most popular application of ICT4D that connects the rural and poor community to the digital world. However, in practice it meets failure more than success due to several factors including the mismatch in design and management, especially, the lack of monitoring on the progress of the project. This paper intends to contribute in telecenter research in the field of performance evaluation by establishing an assessment method from the perspective of social sustainability. Social sustainability, one of the driving forces of telecenter sustainability, can be realized when telecenter is be able to deliver community acceptance content to majority of the local population. In addition to content design, telecenters have to be efficient in their operation by minimizing the resource while maximizing the outcome. Following formative assessment approach focusing on monitoring the progress or outcome (efficiency) of the project, and within the objective of finding a set of efficient telecenters and elements contributing to the performance improvement,this study employs Data Envelopment Analysis to periodically evaluate the operation of 20 telecenters of iREACH telecenter network.
Global hydroelastic model for springing and whipping based on a free-surface CFD code (OpenFOAM)
Seng, Sopheak,Jensen, Jorgen Juncher,Malenica, Sime The Society of Naval Architects of Korea 2014 International Journal of Naval Architecture and Oc Vol.6 No.4
The theoretical background and a numerical solution procedure for a time domain hydroelastic code are presented in this paper. The code combines a VOF-based free surface flow solver with a flexible body motion solver where the body linear elastic deformation is described by a modal superposition of dry mode shapes expressed in a local floating frame of reference. These mode shapes can be obtained from any finite element code. The floating frame undergoes a pseudo rigid-body motion which allows for a large rigid body translation and rotation and fully preserves the coupling with the local structural deformation. The formulation relies on the ability of the flow solver to provide the total fluid action on the body including e.g. the viscous forces, hydrostatic and hydrodynamic forces, slamming forces and the fluid damping. A numerical simulation of a flexible barge is provided and compared to experiments to show that the VOF-based flow solver has this ability and the code has the potential to predict the global hydroelastic responses accurately.