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Articles by Y. D Kim
Total Records ( 2 ) for Y. D Kim
  J. H Lee , B. J Han , H. J Lim , Y. D Kim , N Saxena and T. M. Chung

In recent years, high-bandwidth and low-cost wireless technologies have emerged as a competitive element, enabling the smart home environment. On the other hand, with the increasing demands for various services, the current access point allocation schemes give rise to significant challenges for a stable connection service, bandwidth and load distribution. In this paper, we present an optimal access point allocation scheme based on genetic algorithm that attempts to optimize multiple parameters, such as bandwidth, and load-balancing requirements. The proposed allocation scheme provides a set of approximately efficient solutions, which allows a wireless user to choose an access point based on its capacity and load balancing, not only regarding its signaling strength or service set identifier. The simulation results are provided to demonstrate the impact of the proposed optimization procedure on overall system performance in terms of connection distribution, load balancing and call dropping probability.

  Y. D Kim , C. B Park , J. J Kim , C. K Kim and S. W. Moon

Complications after performing mediastinoscopy are uncommon, but they may occur even for an experienced surgeon. The major complications have the potential to be life-threatening injuries, such as major vascular or airway injury. A 51-year-old man presented to our hospital due to mediastinal node enlargement on follow-up after he had undergone gastric cancer surgery 2 years previously. An iatrogenic bronchial rupture occurred while performing mediastinoscopic biopsy, and this injury was primarily repaired with multiple direct interrupted sutures, along with the aid of a homemade knot pusher under video mediastinoscopy, and we did not have to convert to an open thoracotomy.

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