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동적기하프로그램을 활용한 이차곡선 최적화 문제해결에 관한 연구
김정수,전보현,정영우,김부윤,이양,Kim, Jung Soo,Jeon, Bo Hyun,Chung, Young Woo,Kim, Boo Yoon,Lee, Yan 영남수학회 2014 East Asian mathematical journal Vol.30 No.2
The problems of optimization addressed in the high school curriculum are usually posed in real-life contexts. However, because of the instructional purposes, problems are artificially constructed to suit computation, rather than to reflect real-life problems. Those problems have thus limited use for teaching 'practicalities', which is one of the goals of mathematics education. This study, by utilizing 'GeoGebra', suggests the optimization problem solving related to the quadratic curve, using the contour-line method which contemplates the quadratic curve changes successively. By considering more realistic situations to supplement the limit which deals only with numerical and algebraic approach, this attempt will help students to be aware of the usefulness of mathematics, and to develop interests in mathematics, as well as foster students' integrated thinking abilities across units. And this allows students to experience a variety of math.
임상연구 : 간우엽 공여술 후 혈액응고 상태의 변화와 경막외 카테터 사용 시의 의미
최수주 ( Soo Joo Choi ),곽미숙 ( Mi Sook Gwak ),김갑수 ( Gaab Soo Kim ),이준용 ( Jun Yong Lee ),김태형 ( Tae Hyeong Kim ),김진경 ( Jin Kyung Kim ),김정수 ( Chung Soo Kim ),정익수 ( Ik Soo Chung ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.6
Background: Living donors for liver transplantations may have a low pain threshold and should be given effective postoperative pain control. However, epidural catheterization has been the subject of intense debate because of the possibility of severe coagulation derangement after a right hepatectomy. This study examined the changes in the coagulation status in right lobe donors. Methods: The charts and computerized hospital data of 261 consecutive living donors who had undergone right hepatectomy were retrospectively reviewed. The coagulation profile including the platelet count, prothrombin time (PT), and activated partial thromboplastin time (aPTT) was analyzed at the preoperative period, immediately after surgery, and 5 days after surgery. Results: The platelet count decreased significantly from immediately after surgery until postoperative day (POD) 5 (P < 0.001). Nineteen donors (7.3%) had a minimum platelet count of < 100 × 103/mm3, and no case showed a platelet count of < 50 × 103/mm3. The PT increased significantly and reached at peak at POD 1 (1.56 ± 0.19 INR), and the PT values until POD 5 were significantly different from the preoperative values (P < 0.001). However, the peak PT was > 2.0 INR in only 4 donors (1.5%). The aPTT immediately after surgery showed severe prolongation (P < 0.001), but recovered rapidly on POD 1. Conclusions: Right lobe donors showed postoperative coagulation derangement but the changes appear to be acceptable for the maintenance and removal of the epidural catheters. These results suggest that careful epidural catheterizations are relatively safe in right lobe donors. (Korean J Anesthesiol 2006; 51: 685~9)
A Clinical Analysis of 100 Cases of Gasless Endoscopic Thyroidectomy
Jeong Soo Kim(김정수),Chung Goo Kim(김정구),Kee Hwan Kim(김기환),Chang Hyuck Ahn(안창혁),Hae Myung Jeon(전해명),Keun Woo Lim(임근우),Eung Kook Kim(김응국),Chung Soo Chun(전정수),Jai Hak Lee(이재학),Hyun Shik Son(손현식),Jung Min L 대한외과학회 2002 Annals of Surgical Treatment and Research(ASRT) Vol.63 No.1