Seungjin Park

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The black hole problem is one of the security attacks that occur in <i>mobile ad hoc networks</i> (MANETs). We present two possible solutions. The first is to find more than one route to the destination. The second is to exploit the packet sequence number included in any packet header. Computer simulation shows that compared to the original <i>ad hoc(More)
A fault ring is a connection of only nonfaulty adjacent nodes and links such that the interior of the ring contains only faulty components. This paper proposes two wormhole routing algorithms that deal with more relaxed shapes of fault rings than previously known algorithms [1, 2, 3] in the mesh networks. As a result, the number of components to be made(More)
OBJECTIVE The purpose of the present study was 1) to identify factors that may influence academic stress in medical students and 2) to investigate the causal relationships among these variables with path analysis. METHODS One hundred sixty medical students participated in the present study. Psychological parameters were assessed with the Medical Stress(More)
In mobile ad hoc networks, many routing algorithms rely on some form of flooding to accomplish the route discovery process. Flooding, however, consumes many valuable network resources such as time, bandwidth, and power. Most current routing schemes expire valid routes after a time period to account for nodal movement. This paper proposes a new route(More)