EOG Artifacts Removal in EEG Measurements for Affective Interaction

A brain-computer interface (BCI) is a direct link between the brain and a computer. Multi-modal input with BCI forms a promising solution for creating rich gaming experience. Electroencephalography (EEG) measurement is the sole necessary component for a BCI system. EEG signals have the characteristics of large amount, multiple channels and sensitive to noise. The amount of valuable information derived from EEG signals is dependent on both the amount of noises embedded in the original measurement and the algorithms selected for postprocessing. Therefore, artifacts removal in the preprocess step is crucial. Electrooculography (EOG) signals are one of the major artifacts that often appear in EEG measurement. In this paper, we compared two different algorithms (Recursive Least Square (RLS) and Blind Source Separation (BSS)) to investigate their performances on removing EOG artifacts from EEG signals. Results indicate that the performance of RLS algorithm is better than BSS algorithm no matter whether there are any EOG reference signals. For BSS algorithm, the performance is better when EOG reference signals are available. These results show that for a BCI system, EEG reference is often necessary. Performance will be sacrificed if an EEG system cannot have any EOG reference signals

A Fuzzy Set Based Network Trust Model in P2P Environment

This paper establishes a trust model based on fuzzy set. It’s a method based on subject uncertain theory. Adopting the fuzzy comprehensive evaluation, it computes direct trust value more diversiform and flexible. In the calculation of indirect recommended trust value it brings in the similarity coefficient that can find the peers who can provide more valuable information

A Serious Game for Romanic Bathhouse::the Combination of Learning and fun for Cultural Heritage

Current cultural heritages often make use of images, sounds and video together, aiming to complement existing presentations and to create a memora-ble exhibition. In addition to this, modern culture heritages’ identities have shift-ed from simple holders of cultural objects to an educational institution. The ad-vance of computer games has shown their potentials for the development of edu-tainment content and services for their visitors. A visit to heritage is structured around motion and can be supported and mediated by a computer game that can activate the visitors’ motivation by stimulating their imagination and engagement. Computer games can support visitors during and just after or before the visit. It can also provide opportunities to reorganize and conceptualize historical, cultural and technological facts about the exhibits in a constructive and meaningful way.To demonstrate the advantages of computer games in terms of facilitating the learning activities of culture heritages, we design a serious game with UNITY3D game engine. The game allows players to navigate the virtual Romanic Bathhouse based on the remains from Heerlen