Yoonjae Choi

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BACKGROUND AND PURPOSE Environmental factors might influence the pathogenesis of Parkinson's disease (PD) or multiple-system atrophy (MSA), and previous examinations of pesticide exposure, well-water drinking, and farming have produced inconclusive results. Because agriculture has been of considerable importance to Korean society, and hence the risk of(More)
  • Yoonjae Choi, Byeongjik Lee, Jinsuk Pak, Icksoo Lee, Hoseseung Lee, Jangkyu Yoon +1 other
  • 2007
In legacy 802.11e, It proposed polling for transmitting allocated TXOP for real-time traffic and proposed multi-polling to reduce overhead and transmit similar data type which exist different frame, together. In existing multi-polling method, they first allocate CBR traffic that became admission control, and then allocate VBR traffic. However, this method(More)
SUMMARY Event extraction is vital to social media monitoring and social event prediction. In this paper, we propose a method for social event extraction from web documents by identifying binary relations between named entities. There have been many studies on relation extraction, but their aims were mostly academic. For practical application, we try to(More)
The syndrome of inappropriate antidiuretic hormone secretion (SIADH) can be caused by a variety of drugs. Dopaminergic drugs might enhance the secretion of the antidiuretic hormone arginine vasopressin by reducing γ-amino butyric acid release through the dopaminergic receptor in supraoptic nucleus. A 75-year-old woman with Parkinson's disease developed(More)
Wireless sensor networks have many sensor nodes with a limited energy in a limited area. One of key issues in wireless sensor networks is to prolong the network lifetime. In this paper, we propose a scheme to construct an energy-efficient cluster structure in wireless sensor networks. Our scheme considers both the residual energy of sensor nodes and the(More)
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