In Peer-to-Peer Video on Demand system free VCR-like operations are very frequent. The uncertainty of frequent VCR operations makes it difficult to provide play as download services. To address this problem, we propose Optimize prefetching for Peer-to-Peer Video-on-Demand systems. Through simulation results, we demonstrate that the proposed prefetching scheme significantly reduces the seeking d...

In many occasions, the text describing an algorithmic task may entail a rather intuitive, operational solution scheme. Yet, such a scheme may not necessarily be efficient or correct. Nevertheless, novices demonstrate tendencies to hastily design their solutions that way, and avoid seeking insightful patterns, which may yield better solutions. In this paper, we name and shed light on this theme,...

In this paper we argue for a combined approach of logging analysis and interview techniques to evaluate the usability of web distributed applications. Logging analysis has proven as an efficient and effective method to investigate websites usability. However it seems insufficient for more complex applications. We outline a case study of a library search system, in which users’ information seeki...

In this paper we argue for a combined approach of logging analysis and interview techniques to evaluate the usability of web distributed applications. Logging analysis has proven as an efficient and effective method to investigate websites usability. However it seems insufficient for more complex applications. We outline a case study of a library search system, in which users’ information seeki...

This paper presents a task-based user study carried out to investigate how explicit roles assigned to group members affected collaborative information seeking behaviour during a travel planning task. 24 pairs participated our study where half of them were given a specific instruction to divide the roles into a searcher and writer, while others were given no such instruction. The evaluation look...

The role of the library has always been to provide the best possible service to all its patrons, possibly, at all time. ICT came up with the facility to enhance the library services. Wi-Fi raised the profile of the library service and met demand for new technologies and services. Using Wi-Fi, library can expand its services and can provide new technologybased services to its users. To analyze t...

We tested the hypothesis that upland wetland restorations provide same quality of wetland, in terms ecosystem services and biodiversity, as natural wetlands St. Lawrence River Valley. Water (pH, alkalinity, colored dissolved organic matter, phytoplankton community composition, chlorophyll-a, fecal coliform, total phosphorus, nitrate, turbidity, specific conductivity) 17 45 restored was compared...