• Journal of Korea Spatial Information System Society
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• v.9 no.1
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• pp.1-13
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• 2007

The necessity of future index is increasing to predict the future location of moving objects promptly for various location-based services. A representative research topic related to future index is the probability trajectory prediction technique that improves reliability using the past trajectory information of moving objects in the road network environment. However, the prediction performance of this technique is lowered by the heavy load of extensive future trajectory search in long-range future queries, and its index maintenance cost is high due to the frequent update of future trajectory. Thus, this paper proposes the Probability Cell Trajectory-Tree (PCT-Tree), a cell-based future indexing technique for efficient long-range future location prediction. The PCT-Tree reduces the size of index by rebuilding the probability of extensive past trajectories in the unit of cell, and improves the prediction performance of long-range future queries. In addition, it predicts reliable future trajectories using information on past trajectories and, by doing so, minimizes the cost of communication resulting from errors in future trajectory prediction and the cost of index rebuilding for updating future trajectories. Through experiment, we proved the superiority of the PCT-Tree over existing indexing techniques in the performance of long-range future queries.

• Childhood Kidney Diseases
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• v.18 no.2
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• pp.92-97
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• 2014

Purpose: Bisphosphonates are widely used for the management steroid-induced osteoporosis (SIO) in children. With the increasing use of bisphosphonates, there have been reports of abnormal radiological findings in the growing skeleton. Therefore, their use in pediatric patients remains controversial. The present study was conducted to evaluate the long-term follow-up radiographic features, particularly metaphyseal sclerotic lines, in children who receive pamidronate therapy for nephropathy. Methods: Twenty-four children with nephropathy treated with oral calcium and pamidronate (mean duration, 9 months; dose, 100 mg daily), were evaluated retrospectively. All patients had SIO secondary to chronic glucocorticoid therapy for treating nephropathy. Long bone radiographic imaging was performed before treatment with pamidronate, and at follow-up, several years later. Physeal growth rates were estimated by measuring the distance that the sclerotic lines moved on the radiographs during the corresponding time intervals. Results: The mean follow-up period was 138 months. Long bone radiographs showed well-defined sclerotic lines at the metaphyseal ends, progressively moving from the physeal plate to the diaphysis, in all patients. The mean rate of movement of the sclerotic line was 6.21 mm per year. In 12 patients, the lines disappeared. The mean rate of growth in height was 7.33 cm per year. Conclusions: Results of long-term follow-up suggest that the metaphyseal sclerotic lines associated with pamidronate treatment tend to disappear without affecting overall skeletal growth. Bisphosphonate treatment for SIO in children with nephropathy seems to be safe, although further studies in larger number of patients are needed.

• Venture DIGEST
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• s.92
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• pp.62-63
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• 2006

벤처기업들의 활동영역의 국내외로 급격히 확대되면서, 각종 계약상 분쟁에 휘말릴 가능성이 높아지고 있고, 이로 인해 적극적인 기업활동에 제약을 받는 등 그 폐해가 커지고 있다. 이러한 분쟁이 발생한 경우, 일반적으로는 법원에 소송을 제기하여 해결하게 되는데 이 경우 장기간 시일과 비용이 소요되어 여러 어려운 문제들이 많이 발생한다. 이럴 경우 소송 대신 중재제도를 활용하면 쉽고 편리하게 분쟁을 해결할 수 있다.

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.514-515
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• 2006

• Proceedings of the Costume Culture Conference
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• 2004.04a
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• pp.44-46
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• 2004

심하게 퇴색된 출토 복식유물의 경우 유물의 고유색을 알지 못함은 물론 사용된 염료의 종류를 알지 못함으로 인하여 유물의 보존처리 및 장기간 보관과 전시에 큰 어려움을 지닌다. 이화학 분야에서는 미지시료의 기초 성분분석 방법으로서 thin layer chromatography(TLC)법이 오래 전부터 사용되었는데, 퇴색된 복식유물의 염료분석을 다룬 일부 선행연구에서는 이를 활용하여 유물의 염료를 판정하였다(Kharbade ＆ Agrawal, 1985; Schweppe, 1989). (중략)

• 농업기술회보
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• v.51 no.4
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• pp.28-29
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• 2014

장마철 집중호우로 인해 배수불량 지대에서 작물이 장기간 침수되면 뿌리활력 저하로 인한 습해와 토양전염성병, 탄저병, 점무늬병 등 지상부 병해가 나타나다. 이번달에는 고품질 약용작물을 생산하기 위해 장마철 전 후 약용작물의 병해충 방제방법에 대해 알아본다.

• Proceedings of the Korean Society of Developmental Biology Conference
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• 2001.10a
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• pp.65-65
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• 2001

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.04a
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• pp.359-360
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• 2008

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.04a
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• pp.274-275
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• 2008

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2001.05a
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• pp.38-39
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• 2001