• 간호행정학회지
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• 제21권3호
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• pp.233-242
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• 2015

Purpose: This was a correlational study to identify effects of perception of clinical ladder system on job satisfaction and intention to leave in perioperative nurses. Methods: Participants were 154 of perioperative nurses from larger general hospitals in Seoul. Data were collected from April, 16 to 22, 2013 using self-report questionnaires which included items on perception of clinical ladder system, job satisfaction, and intention to leave. Data were analyzed using frequency, t-test, ANOVA, $Scheff{{\acute{e}}$ test, Pearson correlation coefficients, and multiple stepwise regression. Results: The average mean score for perception of clinical ladder system was midline at 2.69 point out of 4 point. Perception of clinical ladder system correlated positively with job satisfaction (r=.38, p<.01) and negatively with intention to leave (r=-.88, p<.01). Perception of clinical ladder system was the factor which most influenced job satisfaction explaining 17.1% of the variance, also perception of clinical ladder system was the factor which most influenced intention to leave, explaining 12.7% of the variance. Conclusion: Results of this study suggest that there is a need to enhance the perception of the clinical ladder system and to find ways to fulfill the expected effects for improving perioperative nurses' job satisfaction and reducing the intention to leave.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 추계종합학술대회
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• pp.630-632
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• 2003

본 논문에서는 Ladder 형과 SCF 형의 구조를 가지는 FBAR 필터의 제작에 대해 발표한다. 단위공진기의 구조는 W/SiO$_2$, 반사층을 갖는 SMR (Solidly Mounted Resonate.) 구조을 가지며, 21,200$\mu$m$^2$의 공진 면적을 갖는 단위공진기의 $K^2$eff, Q$_{s}$ 그리고 Q$_{p}$는 각각 3.24%, 6,363 그리고 6,749의 값을 보였다. 이와같은 성능을 갖는 단위공진기를 기본으로 제작된 필터의 크기는 Ladder 형이 800$\times$2000($\mu\textrm{m}$$^2$)의 크기를 갖고 SCF 형이 600$\times$500($\mu\textrm{m}$$^2$)을 가진다. 먼저 필터의 기본이 되는 박막형 공진기를 최적화시키고, 이를 바탕으로 Ladder 형과 SCF형의 구조를 가지는 FBAR 필터를 제작하여 성능을 비교하였다.다..

• Perspectives in Nursing Science
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• 제11권2호
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• pp.123-131
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• 2014

Purpose: The purposes of this study were to assess the efficacy and usefulness of the career ladder program in a hospital and to evaluate nurses' satisfaction with the program. Methods: The study was conducted using a survey consisting of 14 questions on the appropriateness, necessity and usefulness of the career ladder program. The data were gathered from 403 nurses in a hospital. We assessed differences in responses according to the participants' workplace, age, educational background, marital status, experience (total years and years at current working place). We analyzed the data using SPSS/WIN 12.0. Results: Nurses acknowledged that the career ladder program is necessary and profitable within the nursing field, but they worried about the appropriateness of the nurse's role at each career level and rationality of the portfolio. The study also identified nurses' characteristics that were significant factors in explaining nurses' satisfaction with the career ladder program. Finally, we identified complaints and improvements for the program. Conclusion: We assessed differences in attitude towards the career ladder program according to nurses' characteristics.

• 한국기계가공학회지
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• 제19권8호
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• pp.64-72
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• 2020

In this study, a stability analysis was conducted through finite element analysis (FEA) of a simplified model of a fire ladder truck by changing the ascending angle, turning angle, and boundary conditions between the outrigger and the ground. The results of the analysis showed that decreasing the angle of the ladder car increases the moment due to the ladder weight, decreasing the safety factor despite being under the same load conditions. In the case of a rotating radius, the stability was found to vary depending on the boundary conditions. A comparative analysis in the future with these results and the experimental values from the actual fire ladder truck may determine the most appropriate boundary conditions based on the analysis program. It is expected to predict the risk of damage and rollover by assessing the stability of aerial ladder vehicles under different conditions.

• 한국안전학회지
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• 제36권5호
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• pp.36-42
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• 2021

Portable ladders are widely used as ascend and descend pathways and platforms for works at height at residential and industrial sites. In the last 10 years, 267 fatalities and 36,571 accidents related to portable ladders have been reported, suggesting a need to develop countermeasures to prevent such accidents. In this study, an in-depth focus group interview (FGI) was conducted with various stakeholders of portable ladders to survey the current usage and requirements for improving work safety. A new portable ladder called active platform ladder was developed based on the requirements suggested by the FGI. A stability test confirmed that the developed ladder is more stable than conventional ones, suggesting that it can reduce the fall accidents.

• 간호행정학회지
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• 제19권4호
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• pp.501-512
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• 2013

Purpose: This study was done to develop a nursing competency scale according to a clinical ladder system for intensive care nurses. Methods: Index of content validation was done by 20 clinical experts and 80 nurses in Intensive Care Units (ICU). Results: The process and results of study are as follows. First, 12 nursing competencies were used in the establishment of the clinical ladder system (Jang, 2000). Second, the first draft of the competency lists was developed. It was based on the clinical nurses' behavioral indicators of nursing competency by Jang (2000), and was modified and supplemented through various literature reviews including competency standards for specialist intensive care nurses in Australia and consultation with 2 clinical nurses with over 10 years experience in the ICU. Third, the draft was examined by 20 clinical experts for content validity. Finally, the final draft was analysed using clinical validity where 20 nurses in each ladder participated. The final number of items was fixed at 309. Conclusion: The tool represents expected nursing competency of nurses working in ICU. Intensive care nurses can recognize their strengths and weaknesses, and identify directions for their professional growth by analysing results of their competency evaluation using this tool.

• 간호행정학회지
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• 제17권3호
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• pp.301-314
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• 2011

Purpose: This study was a methodological research conducted to develop a clinical ladder system for operating nurses. Methods: Participants were 20 OR nurses, working in C Hospital, who had a mean tenure of 6 years and 10 months. Data collection consisted of 4 focus group interviews during May and June 2009. The content analysis method of Kim and Lee (1986) was used to analyze the data. Two clinical expert groups consisting of 16 nurses verified the content validity of the preliminary system from September 16 to 26, 2009 using Kim's tool (1999). Results: The final clinical ladder system consisted of goals, core values, and 4 domains of practice related to core values, which were defined as professional value, perioperative nursing practice, education/research, and collaboration/leadership. Eleven nursing competencies and 44 behavior indicators were included in accordance with the 4-step ladder. The 4 operation systems for the clinical ladder system were the promotion system, continuous learning system, reward system, and support system. Conclusion: The results indicate that nursing managers need to pay more attention to developing a clinical ladder system for nurses.

• 대한안전경영과학회지
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• 제23권1호
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• pp.9-15
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• 2021

The leading source of occupational fatalities is a portable ladder in Korea because it is widely used in industry as work platform. In order to reduce victims, it is necessary to establish preventive measures for the accidents caused by portable ladder. Therefore, this study statistically analyzed injury death by portable ladder for recent 10 years to investigate the accident characteristics. Next, to monitor wearing of safety helmet in real-time while working on a portable ladder, this study developed an object detection model based on the You Only Look Once(YOLO) architecture, which can accurately detect objects within a reasonable time. The model was trained on 6,023 images with/without ladders and safety helmets. The performance of the proposed detection model was 0.795 for F1 score and 0.843 for mean average precision. In addition, the proposed model processed at least 25 frames per second which make the model suitable for real-time application.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제27권3호
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• pp.267-281
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• 2013

본 연구는 사다리타기 게임을 중학교 수학에서 함수의 도입과 고등학교에서의 합성함수의 도입을 위한 소재로서의 가능성을 탐색하고 있다. 사다리타기 게임에 사용되는 사다리그림은 일대일대응이 되므로 집합을 도입하지 않고도 직관적으로 쉽게 함수의 개념을 도입할 수 있다. 또한 하나의 가로선을 갖는 사다리그림은 일대일대응이므로 r개의 가로선을 갖는 사다리그림은 r개의 일대일대응의 합성함수를 결정함을 알 수 있다. 본 연구에서는 일대일대응에 대한 기본적인 몇 가지 사실에 대하여 사다리그림을 이용하여 수학적으로 증명하였고, 중학교에서의 함수와 고등학교에서 합성함수를 사다리타기 게임으로 도입할 수 있음을 제시하였다. 일대일대응에 대한 사다리그림은 학생들의 흥미와 집중을 유도할 수 있을 뿐만 아니라 함수의 개념을 직관적으로 쉽게 이해하게 하는 좋은 소재로 활용할 수 있다.

• 생태와환경
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• 제55권2호
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• pp.167-174
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• 2022

해양수산부에서는 내수면 자원조성을 목적으로 뱀장어 전용어도 설치사업을 추진하였으며, 현재 금강하굿둑('18년), 영암방조제('19년), 아산만방조제('20년)에 뱀장어 전용어도가 설치되어 운영중에 있다. 본 연구에서는 2021년 뱀장어 전용어도의 실뱀장어 소상 개체수를 모니터링하고 소상에 영향을 주는 요인들을 조사하였다. 뱀장어 전용어도의 실뱀장어 소상은 염분이 비교적 낮을 때 많았으며, 담수와 해수 수온이 20℃ 이상일 때 시작되었으며, 조석(소조기, 대조기, 기타시기)에 따른 차이는 없었다. 연도별 출현 개체수를 비교하였을 때 2021년에 가장 많은 소상 개체수가 관찰되었으나, 이는 해측 실뱀장어의 분포량에 따른 것이 아닌 조사자의 어도 보수와 불법 조업의 계도에 따른 결과로 판단된다.