• 대한조선학회논문집
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• 제50권6호
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• pp.429-435
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• 2013

Recently, to improve the safety and maneuverability at fairway around harbor the POD system has been equipped on a ship. And the interest about maneuvering characteristics of a cruise ship has been increasing. In this paper the mathematical model of maneuvering motion of a cruise ship with twin POD system in general speed and slow speed are presented. And the maneuvering coefficients of mathematical model are obtained from the captive model tests using CPMC(Computerized Planar Motion Carriage). Computer simulation using mathematical model in general speed and slow speed are carried out and compared with the results of free running model test with the same model ship. The differences between the mathematical models are compared and discussed. In this paper the mathematical models, the results of captive model test and simulation results are presented.

• 항공우주기술
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• 제11권1호
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• pp.178-184
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• 2012

본 논문에서는 초경량항공기의 사고 예방을 위한 실시간 안전진단 시스템(Health and Usage Monitoring System; HUMS)을 개발함에 있어 Test-bed 항공기에 HUMS를 적용한 주익 제작 과정을 살펴보고자 한다. 대상 항공기는 Jabiru-UL 모델이며, 주익 내부에 설치한 센서는 광섬유센서, 압전센서 및 스트레인 게이지이다. 센서 설치 후 조립을 완료한 주익에 대한 각 센서의 동작 여부에 대한 계측시험을 수행하였다. 조립 완료한 주익은 항공기에 장착되어 HUMS의 운영 성능 향상을 위한 데이터 획득 및 고장검출 알고리즘의 검증을 위한 Test-bed로 활용하고자 한다.

• 대한간호학회지
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• 제35권7호
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• pp.1268-1276
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• 2005

Purpose: This study was amied to identify the effects of a 12 week Korean traditional dance movement program on balance, depression, medical cost, medical institution's utilization and fall among elderly women. Methods: Using a quasi-experimental design, the experimental group was composed of 130 subjects and the control group was composed of 123 subjects. The experimental group participated in a 12 week Korean traditional dance movement program 3 times a week from December 2002 to February 2003. Data was analyzed with descriptive statistics, the chi-square test, paired t-test and t-test. Results: There was siginificant improvement in balance(right leg p=.000, left leg p=.004), depression(p=.000), and the medical institution's utilization(p=.001) and fall(p=.002) in the experimental group compared to the control group. Conclusion: A Korean traditional dance movement program improved balance, depression, and decreased fall and medical cost in elderly women. Therefore, we recommend this program be utilized as a health promoting program and falls preventing program for the elderly in the community.

• 한국자동차공학회논문집
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• 제16권5호
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• pp.77-83
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• 2008

Semi-active cabin air suspension system improves driver's comfort by controlling the damping characteristics in accordance with driving situation. For the driver's comfort evaluation, test procedure has the two methodologies which are filed test and lab test. A field test method has a drawback. It requires a lot of time and money on repetitive test, due to the sensitivity of field test. On the other hand, the test with six axes simulation table at laboratory can obtain the repeatability of test, better than the field test method. In this paper, the procedures of ride performance test and control logic tuning with the table are presented. Drive files of the table can be represented with the almost same input condition as field test data. According to the result from the comparative test using six axes simulation table between passive and semi-active system by making ECU logic tuning, the RMS acceleration of semi-active cabin air suspension system was reduced by 29.6% compared with passive system.

• 기본간호학회지
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• 제25권2호
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• pp.109-119
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• 2018

Purpose: The purpose of this study was to investigate the effects of a delirium prevention intervention for patients in neurology and neurosurgery intensive care units (ICUs). Methods: This study was a quasi-experimental study. Participants were 87 patients. The experimental group was provided with nonpharmacologic and multicomponent delirium prevention interventions, consisting of regular delirium assessment, improvement in orientation, early therapeutic intervention, and environmental interventions. The control group was provided with routine intensive care. Data were analyzed using $x^2$ test, Fisher's exact test, and t-test. Results: Both groups were homogeneous. The incidence of delirium and length of hospitalization were significantly lower in the experimental group compared to the control group. ICU stay, mortality and unplanned extubation were lower in the experimental group compared to the control group, but there was no significant difference. Conclusion: Findings indicate that the delirium prevention intervention is effective in reducing incidence of delirium and length of hospitalization. Therefore, this intervention should be helpful in preventing delirium in neurology and neurosurgery ICUs and can be used as a guide in the prevention of delirium in neurological diseases's patients.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
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• pp.933-937
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• 2005

FCBGA가 마더보드에 실장된 후 솔더 조인트에 균열이 생기면 단선이 발생한다. 솔더 조인트의 신뢰성을 평가하기 위한 방법 중 전단강도시험(shear test)은 약한 솔더 조인트를 판별하기 어려워 양품 로트와 불량 로트를 구별할 수 없으며, 인장강도시험(pull test)은 솔더 볼의 위치별 산포가 크고, peel test는 품질을 정량적으로 나타낼 수 없는 등의 문제가 있다. 새로운 시험 방법은 Area Pull Test(이하 APT)라 명명했으며 peel test와 pull test를 합한 개념으로서, 시험 샘플을 만드는 과정은 peel test와 동일하다. 솔더 조인트의 인장강도 측정은 지그를 만들어서 FCBGA 전체를 당겨서 측정하였다. 샘플은 Ni도금 두께를 3, 5, 8 ${\mu}m$로 제작하여 불량(3${\mu}m$), 양품으로 구분하였고, 양품 또한 품질 수준을 두가지(5,8${\mu}m$)로 나누었다. 그 결과 peel test 기준에 의거한 불량, 양품을 정량적인 수치(인장강도)로 판별할 수 있었으며, 솔더 조인트의 파괴모드별 인장강도를 구분 할 수 있었다.

• 한국식생활문화학회지
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• 제32권1호
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• pp.52-57
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• 2017

The feasibility of reduction of sodium intake using sun-dried salt and monosodium glutamate (MSG) was studied. Preference test was performed to evaluate the sensory properties of bean-sprout soup and vegetable rice porridge soup. Sun-dried salt and MSG might be a partial substitute for refined salt. There was a significant difference in salt taste strength between sun-dried salt and refined salt. Sun-dried salts 0.45% with MSG 0.07% resulted in the highest taste preference compared to that of sun-dried salts 0.60% without MSG in bean-sprout soup, which resulted in 23.9% reduction of sodium intake. Sun-dried salts 0.38% with MSG 0.04% resulted in the highest taste preference compared to sun-dried salts 0.53% without MSG in vegetable rice porridge soup, which resulted in 25.4% reduction of sodium intake. There seemed to be a synergistic effect on reduced usage of sodium salt when MSG was used in vegetable rice porridge and bean-sprout soup with sun-dried salt.

• Asian Pacific Journal of Cancer Prevention
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• 제15권13호
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• pp.5155-5160
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• 2014

Aim: To investigate the efficacy and safety of lobaplatin-transcatheter arterial chemoembolization (TACE) combined with radioactive $^{125}I$ seed implantation in treatment of primary hepatocellular carcinoma (HCC). Methods: 75 patients with primary HCC were enrolled in the study, among them 43 receiving lobaplatin-TACE (TACE group) and 32 lobaplatin-TACE combined with $^{125}I$ seed implantation (TACE+$^{125}I$ group). After treatment, the local remission rates and postoperative complications of two groups were compared using the Pearson Chi-square test. Overall survival in the two groups was calculated using Kaplan-Meier survival curves and the differences were tested using Log-rank test. Results: There were 7 cases of complete response (CR), 13 of partial response (PR), 6 of stable disease (SD) and 17 of progressive disease (PD) in the TACE group, with 13 cases of CR, 9 of PR, 5 of SD and 5 of PD in the TACE+$^{125}I$ group. The disease control rates of TACE and TACE+$^{125}I$ group were 60.5% (26/43) and 84.4% (27/32), respectively, with a significant difference between them (P < 0.05). The survival rates at 6, 12 and 18 months in the TACE group were 100.0%, 81.8% and 50.0%, respectively, and those in TACE+$^{125}I$ group were 100.0%, 93.8% and 65.6%. The mean survival times in the TACE and TACE+$^{125}I$ groups were 19.5 and 22.9 months, respectively. There was a significant difference in the overall survival rate between two groups (P < 0.05). No serious complications were encountered in either group. Conclusion: Lobaplatin-TACE combined with $^{125}I$ seed implantation is favorable and safe for treatment of primary HCC.

• 대한전자공학회논문지SD
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• 제39권9호
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• pp.45-54
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• 2002

P45 본 논문에서는 SOC의 내장된 코어를 테스트하기 위한 새로운 DFT 방법인 순차적 테스트 데이터 압축 방법을 제안한다. 순차적 테스트 데이터 압축 방법은 테스트 데이터양을 줄이기 위하여 공유 비트 압축과 고장 무검출 패턴 압축 방법을 이용하였다. 그리고 순차적 테스트 데이터 압축 방법을 이용하는 회로는 스캔 DFT 방법을 기반으로 하고 있으며, test-per-clock 방법을 적용하여 매 클럭마다 테스트 할 수 있는 구조를 가지고 있다. 제안된 압축 방법의 실험을 위하여 벤치마크 회로인 ISCASS85와 ISCASS89 완전 스캔 버전을 이용하였으며, ATPG와 고장 시뮬레이션을 위하여 ATALANTA를 사용하였다. 실험 결과 순차적 테스트 데이터 압축 방법의 테스트 데이터의 양이 스캔 DFT를 적용한 회로에 비해 최대 98% 까지 줄어듦을 확인하였다.

• 대한기계학회논문집A
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• 제26권10호
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• pp.2114-2121
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• 2002

In order to study the effects of oblique tabs on the in-plane shear properties of unidirectional carbon fiber reinforced aluminum laminate composites, the 10$^{\circ}$off-axis tensile test, the 45 $^{\circ}$off-axis tensile test and Iosipescu shear test were performed to determine the shear properties. Off-axis tension test was studied by using new oblique-shaped tabs proposed by Sun and $Chung^{(7)}$. Iosipescu shear test was studied by using modified Wyoming test fixture. The oblique tabs reduced remarkably end-constraint effects of off-axis specimens with a aspect ratio of about eight. The experimental results show that there is no significant difference between off-axis test results and those of Iosipescu shear test. The 45$^{\circ}$off-axis tensile tests are recommended for the determination of the shear properties of unidirectional carbon fiber reinforced aluminum laminated composites.