• 한국지진공학회:학술대회논문집
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• 한국지진공학회 1999년도 추계 학술발표회 논문집 Proceedings of EESK Conference-Fall
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• pp.186-192
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• 1999

Safety-related equipments of nuclear power plant must be seismically qualified to demonstrate their ability to function as required during and/or after the earthquake, The seismic qualification is usually achieved through analysis and testing. Analysis method is preferably adopted for structurally simple equipments which are easy to be mathematically modeled. However even for relatively complex equipments analysis method is occasionally used for computing the input motion or supporting information for the component test followed. Electrical cabinet is a typical example for which analysis method is combinedly used with test to get modal properties of the enclosing cabinet structure. Usually the structural elements and doors of the cabinet are loosely interconnected with small-size bolts or spot welding. Therefore cabinet-type equipment usually has high and complex nonlinear properties which are not easily idealized by simple practical modeling techniques. in this paper with respect to a typical cabinet-type structure(instrumentation cabinet of nuclear power plant) a comparative study has been performed between three different state-of-the -art modeling techniques: lumped mass model frame model and FEM modal. Form the study results it has been found that modal properties of the cabinet-type structure in the elastic behavior range can be reasonably computed through any type of modeling techniques in the practice with slight modification of model properties to get better accuracy. However it needs additional modeling techniques to get reasonable results up to nonlinear range.

• 대한치과마취과학회지
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• 제13권3호
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• pp.103-110
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• 2013

Background: Recently the use of sedation by pediatric dentists in Korea is increased. This study describes training programs about sedation practices in Korean pediatric dentistry residency program. Methods: A questionnaire was filled in by participants of Korean Academy of Pediatric Dentistry on 17th-18th August, 2008. Also the data about sedation practices of the training institution is collected by phone call. Results: Seventy two percent of respondents used sedation. Most of them used sedation with agents under 25% of their patients. Distribution of ages in patients sedated with agents was 3 years, 4-5 years, under 2 years, 6-10 years, and more than 10 years. Determinative factors of using sedation were behavior management, number of visiting, amount of treatment and general condition, and oral route was the most favorable route. Sixty six percent of them have failed on sedation, and thity percent of them have rarely failed on sedation. Only fifty percent of dentists using sedation completed the cardiopulmonary resuscitation course. Conclusions: For safety, dentists using sedation need to be educated about emergency equipment and management. Especially medication dose, use frequency and the detail related to treatment procedure should be discussed carefully. Also putting a patient under general anesthesia and taking emergency measures should be discussed with Korean Dental Society of Anesthesiology.

• 간호행정학회지
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• 제17권1호
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• pp.33-43
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• 2011

Purpose: This study was done to develop a web-based diagnostic evaluation program for nurses to prevent malpractice liability. Methods: A comprehensive review of the literature and 9 specialist interviews were used to search for learning goals and content for protection for nurses from malpractice. Data on needs for learning goals were collected from 56 hospital nurses who agreed to complete a self-report questionnaire. The diagnostic program was evaluated between September 2008 and August 2009 by 35 new hospital nurses using an application of the web-based program evaluation tools by Chung (2000). Results: A comprehensive review of the literature and interviews were used to search for learning goals and content. The evaluation program was composed of the 73 questions for diagnostic evaluation under 23 learning goals and 6 grand learning goals which included the principles of law, patient's rights, legal responsibility, patient's safety, regulation on nursing practice and patient's rights protection. Evaluation of the program showed that the mean for program evaluation was 3.43 (SD=.37). Conclusion: This diagnostic evaluation program could be an efficient method for teachers and learners to improve nurses' behavior in protecting the patient's rights and preventing malpractice claims.

• Steel and Composite Structures
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• 제24권4호
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• pp.467-479
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• 2017

The stud is one of the most frequently used shear connectors which are important to the steel-concrete composite action. The static and fatigue behavior of stud in the steel fiber reinforced concrete (SFRC) were particularly concerned in this study through the push-out tests and analysis. It was for the purpose of investigating and explaining a tendency proposed by the current existing researches that the SFRC may ameliorate the shear connector's mechanical performance, and thus contributing to the corresponding design practice. There were 20 test specimens in the tests and 8 models in the analysis. According to the test and analysis results, the SFRC had an obvious effect of restraining the concrete damage and improving the stud static performance when the compressive strength of the host concrete was relatively low. As to the fatigue aspect, the steel fibers in concrete also tended to improve the stud fatigue life, and the favorable tensile performance of SFRC may be the main reason. But such effect was found to vary with the fatigue load range. Moreover, the static and fatigue test results were compared with several design codes. Particularly, the fatigue life estimation of Eurocode 4 appeared to be less conservative than that of AASHTO, and to have higher safety redundancy than that of JSCE hybrid structure guideline.

• 의료커뮤니케이션
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• 제13권2호
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• pp.185-193
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• 2018

Background: Nursing college students are exposed to information about diseases or drugs, and are likely to have a distorted perception of drug knowledge or behavior. The study aimed to identify knowledge and attitude about drugs and current status of self-medication among nursing students. Methods: The subjects were 172 nursing students from a university in Busan. Data were collected with structured questionnaires and analyzed using descriptive analysis, t-test, and one-way ANOVA using SPSS 23.0. Results: Nursing students had a high level of knowledge about drugs, but attitudes toward drugs were relatively low. 83.7% of patients had experience of self-medication. The methods to acquire information for self-administration were 29.9% by smart phone and 27.1% by internet. The use of nonsteroidal anti-inflammatory drugs (NSAIDs) among self-medication drugs was the highest. The most common reason for self-medication was 'I thought it to be a mild disease', and the pharmacists were the most affected by choice of self-medication. The knowledge about drugs was statistically significant according to grade, school life satisfaction and subjective health status. The attitudes about medication were statistically significant according to grade and self-medication experience. Conclusion: Nursing college students need drug safety education to improve awareness and practice of correct drug use.

• Nuclear Engineering and Technology
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• 제56권5호
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• pp.1638-1653
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• 2024

Given the unpredictability of the occurrence of the earthquake and other potential disasters into consideration, the nuclear power plant may be confronted with beyond design-basis earthquake load in the future. The containment structure may be severely damaged under such severe earthquake loading, increasing the risk of containment concrete cracking and potential radioactive materials leaking. Moreover, initial damage caused by the earthquake may significantly alter the pressure performance of the containment under follow-up internal pressure. To compromise the dangers of beyond design-basis earthquake to the containment, an alternative of replacing the conventional concrete with fiber-reinforced concrete (FRC) to upgrade the seismic resistance capacity of the containment is attempted and thoroughly researched. In this study, the influence of various fiber types such as rigid fiber and mixed fiber is regarded to constitute fiber-reinforced PCCVs. The physical properties of traditional and fiber-reinforced PCCVs under earthquake ground motions are scientifically compared and identified by using traditional and proposed evaluation indices. The results indicate that both the traditional evaluation index (i.e. top displacement, stress, strain) and the proposed damage index are greatly reduced by the practice of fiber strengthening under earthquake ground motions.

• 한국가금학회지
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• 제47권4호
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• pp.247-254
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• 2020

본 연구는 국내 토종닭 시장의 활성화 방안을 찾고자 실제 구매 데이터를 기반으로 토종닭 구매에 영향을 주는 개인의 식품 소비 성향을 살펴보았다. 농촌진흥청에서 주관하는 소비자패널 654가구를 대상으로 친숙한 브랜드 소비 정도, HACCP 및 GAP 제품 구매 정도를 토대로 한, 식품 안전 중시 소비 정도, 쾌락적 제품 구매 정도를 토대로 한, 건강 중시 소비 정도를 활용하였다. 연구결과에 따르면 익숙한 브랜드를 주로 소비하면서, 식품안전과 건강을 중요시하는 소비패턴을 보이는 전업주부일수록 토종닭을 지속적으로 구매할 가능성이 증가하는 것을 확인하였다. 더불어 식품안전을 우려하는 성향이 높을수록 토종닭의 첫 구매자로 연결될 가능성이 증가하였다. 이러한 결과를 바탕으로 저조한 토종닭 시장 점유율을 확대할 수 있는 방안은 다음과 같다. 토종닭에 대한 안전성을 강조하여 마케팅한다면, 토종닭을 처음 구매하는 소비자의 진입장벽을 낮출 수 있을 것이다. 또한, 프랑스 토종닭 인증제도 및 브랜드 사례와 같이, 토종닭 자체 브랜드의 반복적 노출 및 강조 그리고 토종닭의 건강적 이점을 강조하여 마케팅한다면 토종닭 소비층의 구매 의사 상승에 기여할 수 있을 것이다. 마지막으로 공신력 있는 인증제도를 통해 건강과 안전을 중시하는 소비자의 구매 의사를 자극시킬 수 있으며, 저조한 국내 토종닭 시장 점유율을 개선할 수 있을 것으로 기대된다.

• 한국심리학회지 : 문화 및 사회문제
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• 제8권1호
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• pp.17-40
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• 2002

한국에서 5개 광역별로 운전자들이 지각하는 교통환경과 운전행동을 결정하는 사회인지 요인들의 공통점과 차이점을 알아내었다. 전국 14개 지역에서 운전자 1,387명을 대상으로 수행된 본 연구의 중요 결과를 5개 광역권으로 나누어서 분석한 결과를 요약하면 다음과 같다. 먼저 운전자의 교통행동을 결정하는 사회인지 요인들 가운데 습관 요인은 지역에 상관없이 일관되게 중요한 요인이었다. 그러나 지역에 따라서 큰 차이를 보이지 않고 비교적 중요하게 기여한 행동의도 요인을 제외하면 교통행동의 결정 요인들이 지역에 따라서 달리 나타났다. 물리적 교통환경의 지역별 특성을 운전자의 지각에 따라서 비교한 결과에서는 8가지 물리적 교통환경 요인들(도로지형/구조, 도로 및 안전시설, 보행자 행동특성, 주변운전자의 운전특성 등)에서 의미있는 차이를 보였다. 운전자요인을 보면 4가지 주요 운전행동들 중 안전띠 착용 및 음주운전 행동과 관련되는 구성개념들 대부분과 과속운전 행동 및 주의경계 소홀 행동 영역의 일부 요인들을 측정한 값에서 5개 광역간에 의미있는 차이가 있었다. 구체적으로 안전띠 착용 습관, 의도, 행동 그리고 음주운전 습관, 의도, 행동 등에서 광역별 차이를 보였으며, 과속운전의 경우 태도, 주의경계소홀 행동의 경우 습관과 의도에서 광역별 의미 있는 차이를 보였다. 결과들은 광역별로 교통환경의 지각과 운전행동의 결정 요인에 차이가 있음을 의미한다. 따라서 교통안전대책은 지역 또는 광역 특성에 따라 제시되어야함을 시사한다. 이 연구 결과를 토대로 지방자치제에 알맞은 각 지역별 교통 대책에 관한 시사점을 논의하였다

• 한국재료학회지
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• 제30권4호
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• pp.197-203
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• 2020

Abdominal organs are the most vulnerable body parts under vehicle trauma, and there is high mortality from acute injuries in accidents. There are various ways to reduce this high mortality; one method is Resuscitative Endovascular Balloon Occlusion of the Aorta, which has recently become very popular as a minimally invasive alternative in the emergent management of patients with non-compressible hemorrhages below the diaphragm. However, high safety factor for patients is applied in actual clinical practice because there is no exact standard for the operating time. Therefore, in this study, the effects of the mechanical behavior of organ tissues for the duodenum, kidney, and liver on the operating time of Resuscitative Endovascular Balloon Occlusion of the Aorta is investigated in order to obtain data needed to establish standards of operating time. In characteristic analysis of organ tissues, uniaxial tensile test and compression test are conducted according to the operating time.

• 한국압력기기공학회 논문집
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• 제15권1호
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• pp.62-70
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• 2019

The APR1400 reactor may be operated for a long time under high temperature and pressure conditions, causing damage to the stud holes and causing stud bolts and holes to stick. The present practice is to manually remove the anti-sticking agent and foreign matter remaining in the APR1400 reactor stud hole and to visually check the surface condition of the thread to check the damage status of the threads. In the case of the APR1400 reactor stud holes, manually cleaning the threads increases the risk of radiation exposure and operator's fatigue. To avoid this, the autonomous mobile robot is used to automatically clean the reactor stud holes. The purpose of this study is to optimize the cleaning performance of the mobile robot by looking at the behavior of the surface roughness of the stud surface cleaned by the brush attached to the mobile robot due to changes in brush material, thickness of wire, and rotation speed. A microscopic approach to the surface roughness of the flank is needed to investigate the effects of the newly proposed brush of the autonomous mobile robot on the thread holes. According to this experiment, it is reasonable to use STS brush rather than Carbon one. Optimal operating conditions are derived and the safety of APR1400 reactor stud holes maintenance can be improved.