• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2000년도 Proceeding of International Symposium NAVAIDS 2001
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• pp.121-127
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• 2000

No Abstract.See Full-text

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2001년도 Proceeding of International Symposium
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• pp.12-1-12-7
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• 2001

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2005년도 추계학술대회 논문집
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• pp.269-272
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• 2005

For the three decades, the mold-filling of injection molding process was modeled as Hele-Shaw model. However, this model can not consider the 3D effect. In this paper, numerical simulations of three dimensional mold-filling during the filling phase were performed. The governing equations were discretized by segregated finite element method, which used equal order interpolation for pressure and velocity fields. The iterative linear equation solver (JCG, SOR) was employed for the solution of the momentum and pressure equations. Volume of Fluid (VOF) was employed for the melt front advancement. To check the validity of the numerical results, the results were compared with the experimental ones. The agreements between the experiment and the numerical results were found to be satisfactory.

• TTA 저널
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• 통권36호
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• pp.65-77
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• 1994

본고에서는 UPT정의, 관련조직, 표준화 동향 등을 분석한다. UPT 정의 측면에서는 개인 이동성을 설명하고, UPT 관련 ITU-T 조직으로는 ICG FPLMTS, JCG UPT, PMG2 UPT, ITU-T SG11 등을 기술분석하였다. UPT 표준화 동향으로 권고안 목록, 표준화 작업중인 기본 문서, 표준화의 현 상태, 표준화 계획등을 기술하였다.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2003년도 춘계학술발표회
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• pp.89-97
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• 2003

To improve the educational system of Korea Maritime Police Agency(KMPA), the authors investigate and evaluate the present course and curricula in details comparing with the systems of USCG and JCG. As a result, it is suggested that KMPA find the diverse route to recruit good-quality officers, develop the future-oriented system, coordinate the course and curricula to meet the role and mission of KMPA. Besides, KMPA build the own training facility and train special instructors.

• 해양환경안전학회지
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• 제9권1호
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• pp.79-87
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• 2003

본 연구에서는 한국해양경찰의 교육시스템과 선진해양국의 유사기관의 교육시스템을 상호 비교, 분석하여 21세기 해양경찰의 역할과 임무에 적합한 교육제도의 개선방향에 대해 연구하였다. 그 방안으로 해양경찰은 다양한 루트를 통해 우수한 간부인력을 수급하여 이에 적합한 교육프로그램을 개발하여야 하며, 21세기 발전모델을 토대로 미래지향적인 교육제도를 개발하여야 한다. 또한 교육내용과 교육과목을 해양경찰 관련분야를 전반적으로 취급할 수 있도록 조정하여야 하며, 신규임용자에 대한 교육 및 현직자의 직무교육을 위하여 해양경찰학교 및 자체 교육장을 신설 및 확장하여야 한다.

• Obstetrics & gynecology science
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• 제61권6호
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• pp.669-674
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• 2018

Objective This study aimed to develop a nomogram that predicts ongoing pregnancy after in vitro fertilization and embryo transfer (IVF-ET) using patient age and serum hormonal markers. Methods A total of 284 IVF-ET cycles were retrospectively analyzed. At 14 days post-oocyte pick-up (OPU), the serum human chorionic gonadotropin (HCG) and progesterone levels were measured. The main predicted outcome was ongoing pregnancy. Results Patient age and serum of HCG and progesterone levels at 14 days post-OPU were good predictors of ongoing pregnancy. The cut-off value and area under the curve (AUC) (95% confidence interval) were 36.5 years and 0.666 (0.599-0.733), respectively, for patient age; 67.8 mIU/mL and 0.969 (0.951-0.987), respectively, for serum HCG level; and 29.8 ng/mL and 0.883 (0.840-0.925), respectively, for serum progesterone level. When the prediction model was constructed using these three parameters, the addition of serum progesterone level to the prediction model did not increase its overall predictability. Furthermore, a high linear co-relationship was found between serum HCG and progesterone levels. Therefore, we developed a new nomogram using patient age and HCG serum level only. The AUC of the newly developed nomogram for predicting ongoing pregnancy after IVF-ET cycles using patient age and serum HCG level was as high as 0.975. Conclusion We showed that ongoing pregnancy may be predicted using only patient age and HCG serum level. Our nomogram could help clinicians and patients predict ongoing pregnancy after IVF-ET if the serum JCG level was ${\geq}5IU/L$ at 14 days post-OPU.