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Wireless network coding has been shown to reduce the number of transmissions by exploiting the broadcast nature of the wireless medium. Multiple packets may be encoded into a single packet when their respective next hops have enough information to decode them. Previous research has shown that packets belonging to different flows may be encoded (interflow(More)
Routing is one of the most challenging development issues in delay-tolerant networks (DTNs) because of lack of continuous connection. Existing routing schemes for DTNs provide best effort service, but are unable to optimize QoS and support message priority. In this paper, we present a Look-Ahead Routing and Message Scheduling approach (ALARMS) which(More)
<lb>E-learning is one of the new innovative tools used for teaching and learning in<lb>Republic Polytechnic. As it is new, there is a lack of study about its implementation<lb>and this has prompted this study. The goal of this study is to develop and use a suitable instrument to measure students’<lb>attitudes toward e-learning. It also aims to serve as a(More)
  • Gang Xu, Yi Xian
  • 2009 International Asia Conference on Informatics…
  • 2009
The polygon image fragment is a special fragment type, whose sides is composed of straight line segment, and it has seldom been researched. In this paper, a new image fragment reassembly methodology based on corner detection and gray correlation is proposed for polygon fragments. The experimentation indicates the reassembly methodology based on corner(More)
In this paper, the problem of image fragment reassembly has been researched. The multipurpose use of the shape and texture features of fragment is introduced, and a new approach is proposed for a type of specific fragment, polygon image fragment. Since polygon image fragment has a characteristic that it has obvious corners, this approach takes advantage of(More)
Wireless network coding has been shown to reduce the number of transmissions by exploiting the broadcast nature of the wireless medium. Multiple packets may be encoded into a single packet when their respective next hops have enough information to decode them. Previous research has shown that packets belonging to different flows may be encoded (interflow(More)
A new general methodology is introduced for computer-aided reassembly of the polygon image fragments. Since polygon image fragment has a characteristic that it has obvious corners, this methodology takes advantage of such characteristic, and detects the corners by Hough transform and fuzzy reasoning. Meanwhile, it computes the length of each side, compares(More)
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