• 기본간호학회지
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• 제3권2호
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• pp.183-199
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• 1996

The Purpose of this study is to develop and test a nursing model which can be applied to prediction of the quality of life for the patient receiving hemodialysis. A hypothetical model was constructed on Johns & Meleis's empowerment model framework which has 3 contsructs(stress, resource, empowerment). 6 Factors(perceived stress, self-esteem as personal resource, perceived social support as social resource, perceived fertigue, perceived health status & self efficacy as empowerment) were selected to pre dict the quality of life of receiving hemodialysis patients. 4 Factors(self-esteem, perceived social support, perceived health status & self efficacy) had direct effects on the quality of life significantly. Self-esteem had indirect effect on the quality of life via perceived heath status significantly. Perceived social support had indirect effect on the quality of life via self-effcacy significantly. Perceived stress had no direct and indirect effect on the quality of life significantly. Revised model from hypothetical model showed better fit to the data by eliminating unsignificant path. From results of this study we suggest that to improve quality of life of hemodialysis patient nurses provide nursing interventions which improve self-esteem, perceived social support, self-efficacy & perceived health status.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 춘계학술대회
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• pp.7-12
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• 2004

Large-sized pins are usually used to lift and handle large low speed diesel engine crankshaft. There has then been a need to reduce and optimize the weight of the traditionally used pins. Making an hole by cutting the inside of the pin out was investigated in view of static and fracture strength. To compensate the stress increase caused by the introduction of the inner hole, the groove in the circumferential direction pre-existing on the pin is to be removed. Finite element analysis was carried out for both the original model and weight reduced model. Stress intensity factors for semi-elliptical defects assumed on the pin for the original model and weight reduced model was calculated using the ASME method and compared with the fracture toughness test result of the pin material. The diameter of the cutting hole for the revised model was determined based on the analysis results.

• 대한간호학회지
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• 제53권3호
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• pp.309-323
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• 2023

Purpose: This study aimed to develop and test a model for posttraumatic growth among cured patients with COVID-19. This model was based on Calhoun and Tedeschi's Posttraumatic Growth model and a literature review. Methods: The participants comprised 223 patients cured from COVID-19 who were ≥ 19 years of age. The data were collected through an online questionnaire from March 21 to 24, 2022. The assessment tools included the Impact of Event Scale: Revised Korean version, the Connor-Davidson Resilience Scale, the Distress Disclosure Index, the Multidimensional Scale of Perceived Social Support, the Korean version of the Event-related Rumination Inventory, and the Korean version of the Post-traumatic Growth Inventory. Data were analyzed using the IBM SPSS version 24.0 and IBM AMOS 26.0. Results: The modified model showed appropriate goodness of fit (χ² = 369.90, χ² /degree of freedom = 2.09, SRMR = .09, RMESA = .07, CFI = .94, TLI = .93). The post-traumatic growth of cured patients with COVID-19 was explained through distress perception, self-disclosure, and deliberate rumination, with the explanatory power being 70.0%. Conclusion: This study suggests preparing a disaster psychology program involving experts who can activate deliberate rumination is necessary. Further, this study may serve as basic data for developing a program to enhance the post-traumatic growth of patients cured from COVID-19.

• 대한조선학회논문집
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• 제35권1호
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• pp.46-53
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• 1998

본 논문은 초기 설계단계에서 조종성능추정에 널리 사용되고 있는 Inoue 및 Kijima 추정법을 개선하였다. 이를 위하여 당연구소는 Horn 형태의 타와 선미벌브 형태를 갖는 저속비대선에 대해 12척의 계열 PMM 시험과 타단독시험을 수행하였다. 조종수학모델은 일본에서 개발된 MMG 방법을 사용하여 유체력미계수 및 MMG 실험 계수를 해석하였고, 그 결과를 이용하여 기본제원에 의한 회귀분석을 수행하여 민감도 조사 및 조종성능 해석을 수행하였다. 본 논문의 유효성을 검토하기 위해 개선된 회귀식으로 조종성능 해석을 수행하고 그 결과를 Inoue 추정법, PMM 시험에 의한 추정법 및 실선 시운전 결과를 서로 비교하였다.

• 대한조선학회논문집
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• 제47권3호
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• pp.328-341
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• 2010

The authors adopt the Unmanned Undersea Vehicle(UUV), which has taken the shape of manta(Sohn et al. 2006). They call here it Manta-type Unmanned Undersea Test Vehicle(MUUTV). MUUTV is designed with the similar concept of UUV called Manta Test Vehicle(MTV), which was originally built by the Naval Undersea Warfare Center, USA(Lisiewicz and French 2000, Sirmalis et al. 2001, U.S. Navy 2004). The present study deals with evaluation of extreme motion of MUUTV at large attack angles. Extreme motion contains, for example, rising and depth change due to operation of hovering thrusters attached to MUUTV, lateral motion due to ocean current applied to MUUTV at low advance velocity, and so on. Numerical simulation technique has been utilized. The previous mathematical model on manoeuvring motion of MUUTV(Bae et al. 2009a) is basically adopted. Based on the results of present model experiment on extreme motion, the mathematical model is revised and supplemented in order to describe extreme motion. The hydrodynamic derivatives related to extreme motion are obtained from present model experiment and the other derivatives are referred to previous work(Bae et al. 2009a).

• 대한불안의학회지
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• 제13권2호
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• pp.115-122
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• 2017

Objective : The experiences in close relationships questionnaire-revised (ECR-R) (Fraley, Waller & Brennan, 2000) is a valuable tool for measuring adult attachment, and its Korean version, the ECRR-K (Kim, 2004), is widely used in Korea. However, given its substantial length, this study was aimed to develop and validate a short version of the ECRR-K called the ECRR-K14. Methods : Two hundred and ninety-four medical students participated in this study in 2016. They completed the ECRR-K, the Perceived Stress Scale (PSS), the Rosenberg Self-Esteem Scale (RSES), and the UCLA Loneliness Scale (UCLA-LS). The study authors applied the Rasch rating scale to check each item's model fit and then performed confirmatory factor analyses (CFAs) to test the new scale's validity. Results : The authors selected seven items each for the anxiety and avoidance subscales, and the ECRR-K14 showed fair to good internal consistency (Cronbach's ${\alpha}=0.93$ and 0.92 for anxiety and avoidance, respectively). The anxiety subscale showed concurrent validity with the PSS and the RSES while the avoidance subscale showed concurrent validity with the UCLA-LS. The CFAs also demonstrated the validity of the model with a goodness-of-fit index of 0.916. Conclusion : The ECRR-K14 showed excellent reliability and validity and appears to be a promising instrument for measuring the two attachment dimensions in adults.

• 한국항해항만학회지
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• 제32권8호
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• pp.603-609
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• 2008

Manta형 무인잠수정(Manta-type Unmanned Undersea Test Vehicle, 이하 MUUTV라 함)은 Naval Undersea Warfare Center의 Manta Test Vehicle의 설계 및 운용 개념을 기초로 하여 제안되었다(손 등, 2006). 본 연구에서는 Feldman(1979)과 손 등(2006)의 6자유도 운동 수학모델을 이용하여 MUUTV의 조종운동 특성에 미치는 유체력미계수의 민감도 해석을 수행하였다. 민감도 해석 기법으로는 Sen(2000)이 제안한 방법을 채택하였다. 본 연구를 통하여 각각의 유체력미계수가 MUUTV의 조종운동 특성에 미치는 영향을 정량적으로 파악할 수 있었으며, 상대적으로 영향을 작게 미치는 유체력미계수가 포함된 항을 제거하여 조종운동 수치 시뮬레이션을 수행하여도 운동 추정이 가능함을 알 수 있었다.

• 한국과학교육학회지
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• 제23권2호
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• pp.155-164
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• 2003

본 연구의 목적은 물리 외 교과서의 물리 내용 설명이 학생들의 물리개념 형성에 미치는 영향에 대하여 조사하는 것이다. 본 연구를 위해 부산에 있는 두 중학교에서 각 39명의 학생들로 구성된 한 학급씩을 선정하였으며, 학생들의 개념 조사를 위해 두 종류의 검사 도구를 개발하였다. 검사 도구는 A는 물리 외 교과서의 물리 내용에 관한 설명을 읽은 후에 학생들의 개념을 조사하기 위한 것이고, 검사 도구는 B는 똑같은 물리적 현상에 대해 물리 교육 전문가에 의해서 물리학적으로 이해가 가능하도록 다시 진술한 설명을 읽은 후에 학생들의 개념을 조사하기 위한 것이다. 각 학급에 두 검사 도구 모두를 적용시켰다. 이때 공평한 조사를 위해 한 학급에는 검사 도구 A를 적용한 후 검사 도구 B를 적용하였고, 다른 학급에는 검사 도구 B를 적용한 후 검사도구 A를 적용하였다. 본 연구의 결과는 다음과 같다. 두 학급 모두에서 물리 교육 전문가에 의해서 재진술된 설명에 대한 학생들의 이해도가 물리 외 교과서의 설명에 대한 이해도 보다 더 높게 나타났다(p< .01). 이것은 물리 외 교과서에서의 모호하고 바르지 못한 물리 개념의 설명이 학생들의 오개념을 유발할 가능성이 있으며, 적절치 못한 문장의 표현 및 용어의 선택, 애매한 문장의 문법적인 구조가 물리 개념을 올바르게 이해하는데 방해가 됨을 알 수 있다. 또한 적절치 못한 예와 잘못된 그림을 제시하는 것이 오개념을 형성시킬 가능성이 높다고 볼 수 있다. 그리고 물리 교과서에 사용하는 용어와 물리 외 교과서에서 사용하는 용어가 다른 것이 학생들의 혼동을 야기 시킬 수 있다는 것을 알 수 있다.

• 정보교육학회논문지
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• 제24권1호
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• pp.1-10
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• 2020

4차 산업 혁명에 따라 전 세계에서는 이에 맞는 새로운 인재를 양성하고자 SW 교육을 강조하고 있다. 이런 세계적 흐름에 맞추어 우리나라에서도 2015 개정교육과정에서 SW 교육을 필수화하였다. 하지만 우리나라 초등 SW교육은 블록 기반 프로그래밍 언어의 활용에 편중되어 있다. 또한 목표 설정 및 내용 구성에 있어 정의적 영역의 신장은 소홀하고 지식, 기능적 영역의 신장에만 집중되는 경향이 있다. 이에 본 연구에서는 텍스트 기반 프로그래밍 언어 중에서 최근 각광받고 있는 파이썬과 정의적 영역인 '공동체 역량'의 신장을 고려하여 팀 공유정신모형 개념을 활용한 SW교육 방법을 탐구하였다. 팀 공유정신모형 형성 정도가 유사한 두 집단에 t-검정을 수행해 본 결과, 본 연구에서 제시한 SW학습방법을 적용한 집단 내 학습자들의 팀 공유정신모형 형성에 효과가 있다는 것을 확인할 수 있었다.

• Journal of Forest and Environmental Science
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• 제36권3호
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• pp.243-254
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• 2020

This study was conducted to develop a forest education program through middle school curriculum linkage. We used the ADDIE model, comprising the five phases of Analysis, Design, Development, Implementation and Evaluation, to secure the objectivity of the program. In the Analysis phase, middle school textbooks were analyzed while considering middle school students' needs for curriculum linkage and the developmental stages of adolescents. The Design phase focused on promoting an understanding of curriculum subjects based on what was reviewed in the Analysis phase and concretized and organized a program that can be implemented in the forest, with a focus on science and physical education, based on the results of middle school students' needs. We also established the objectives and goals of curriculum linkage forest education, established the concept of the program, and selected the educational contents, teaching-learning methods, and evaluation methods. In the Development phase, we developed a 2-night, 3-day program linkage with the middle school curriculum and created a manual for instructors and a workbook for students. In the Implementation phase, we revised and supplemented the program through the first test operation with 24 students in their second year of middle school, after which, we carried out a six-session program for the 2-night, 3-day as the second test operation with 17 students in their second year of middle school. In the Evaluation phase, the program was evaluated by the students who participated in the second test operation using questionnaires on satisfaction and curriculum linkage understanding as well as rating scales for attitudes toward forests and environmental sensitivity. The results showed that middle school students showed positive significance in satisfaction and understanding of the middle school curriculum as well as attitudes toward forests and environmental sensitivity through the forest education program.