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  \title{A Distributed Algorithm to Detect and Update Hole Boundary in Wireless Sensor Network}
   \author{Nguyen Khanh Van \\
      Hanoi University of Science and Technology\\
      vannk@soict.hust.edu.vn\\
    \AndAuthor
      Phan Van Hau \\
      Hanoi University of Science and Technology\\
      pvhau93@gmail.com\\
    \AndAuthor
      Nguyen Phi Le \\
      Hanoi University of Science and Technology\\
      lenp@soict.hust.edu.vn\\
    \AndAuthor
      Nguyen Duc Trong \\
      Iowa State University\\
      trong@iastae.edu
   }
  \titleodd{Informatica}
  \authoreven{Nguyen Khanh Van et al.}
  \keywords{wireless sensor network, dynamic hole}
  \received{April 5, 2016}

  \abstract{Holes in sensor network are regions without operating nodes which may occur due to several reasons, including cases caused by natural obstacles or disaster suffered areas. Determining the location and shape of holes can help to monitor these disaster events (such as volcano, tsunami, etc.) or help to make smart, early routing decisions for circumventing a hole. There are many hole determination algorithms have been proposed in the literature. However, all of these algorithms only consider the networks with static holes. Moreover, most of these protocols are conducted in the centralized manner which is not suitable with the resource constraint of the sensor nodes. In this paper, we propose algorithms not only to determine a hole but also to quickly update the hole shape when it is enlarged. The algorithms are conducted in a distributed manner and the simulation results shown that our protocol is lightweight and feasible with the resource limitation of sensor network.}
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\section{Introduction}
\label{sec:intro}
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\section{Our Hole Monitor Scheme}
\label{sec:proposed_scheme}
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\section{Performance evaluation}
\label{sec:evaluation}
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\section{Related work}
\label{sec:related_work}
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\section{Conclusion and Future work} % conclusion and discussion; just discussion etc.
\label{sec:conclusion}
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