Jeonghwa Yang

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Householders are increasingly adopting home networking as a solution to the demands created by the presence of multiple computers, devices, and the desire to access the Internet. However, current network solutions are derived from the world of work (and initially the military) and provide poor support for the needs of the home. We present the key findings(More)
As networking moves into the home, home users are increasingly being faced with complex network management chores. Previous research, however, has demonstrated the difficulty many users have in managing their networks. This difficulty is compounded by the fact that advanced network management tools - such as those developed for the enterprise - are(More)
In this paper, we report on the tools that users currently rely on for their home network management, the usability problems with those tools, and some desirable features for a tool for householders. The data was collected from 25 home network users in Atlanta, USA. The results of this study provide initial clues on the practices of home network management(More)
Multicast is an essential service in mobile ad hoc networks (MANETs). Numerous protocols have been proposed but none of them is directly applicable in sparse MANETs, which are a form of disruption/delay tolerant networks (DTNs). In this paper, we consider multicasting in sparse MANETs with focus on two data dissemination schemes, epidemic routing (ER) and(More)
Home networking is becoming an essential part of everyday life. However, empirical studies and consumer reports indicate that the complexities of configuring and maintaining the home network impose a high barrier for most householders. In this paper, we explore the sources of the complexity of the home network, and describe a solution we have built to(More)
The message ferrying (MF) scheme has been proposed as a strategy for providing connectivity in sparse partitioned ad hoc networks. A set of nodes, called ferries, are responsible for carrying messages for all nodes in the network. A ferry periodically moves around the deployed area along a pre-determined route and relays messages between mobile nodes which(More)
We propose an enhanced prediction-based concurrency control scheme that supports the scalability of concurrency control for large distributed virtual environments especially where entities are highly populated and tend to gather closely. The prediction scheme is based on an entity-centric multicast group. Only the users surrounding a target entity multicast(More)
Using the full potential linearized augmented plane wave method, we have investigated the magnetic properties of a hexagonal boron nitride (h-BN) monolayer induced by a 0.5 monolayer of oxygen (O) and fluorine (F). It has been observed that the F and O adlayers are adsorbed on the boron top site in the most stable structure. We find that both systems(More)