• 수산해양기술연구
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• 제56권3호
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• pp.238-245
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• 2020

In this study, a motion control problem for the vessel towed by towing ship on the sea is considered. The towed vessel does not have self-control capabilities such that its course stability totally depends on the towing ship. Especially, in the narrow canal, river and congested harbor area, extreme tension is required during the towing operation. The authors, therefore, propose a new control system design method in which the rudder is activated to provide its maneuverability. Based on the leader following system configuration, a nonlinear mathematical model is derived and a backstepping control is designed. By experiment results with nonlinear control framework, the usefulness and effectiveness of the proposed strategy are presented.

• 한국융합학회논문지
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• 제6권6호
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• pp.35-42
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• 2015

본 연구는 치위생(학)과 학생들의 임상수행능력에 영향을 미치는 요인을 파악하고자 부산광역시와 울산광역시 치위생(학)과 학생들을 대상으로 2015년 3월 2일부터 6월 12일까지 설문조사를 실시하여 총 329부가 분석에 사용되었다. 비판적 사고성향은 셀프리더십(r=0.884), 임상실습 만족도(r=0.876), 임상수행능력(r=0.845)과 양의 상관관계를 나타내었고, 셀프리더십과 임상실습 스트레스(r=-0.796)는 음의 상관관계를 나타내었다. 임상수행능력에 영향을 미치는 요인은 비판적 사고성향(p<0.001), 셀프리더십(p<0.01), 임상실습 만족도(p<0.01)순으로 나타났다. 이상의 결과 치위생(학)과 학생들의 임상수행능력에 비판적 사고성향, 셀프리더십, 임상실습 만족도가 영향을 미치는 요인으로 나타나 교육시에 비판적 사고능력과 셀프리더십을 향상시킬 수 있는 교수학습 전략과 교육과정 프로그램이 개발되어야 할 필요가 있다고 생각된다. 나아가 임상실습 만족도를 충족시키고 임상수행능력 정도를 향상시킬 수 있는 보다 체계적이고 융합적인 프로그램 개발에 기초자료로 활용될 것으로 기대된다.

• 한국치위생학회지
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• 제18권2호
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• pp.165-175
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• 2018

Objectives: This study aims to examine the factors that influence the organizational citizenship behavior of clinical dental hygienists to use them as basic data for improving effectiveness and efficiency of dental clinics and hospitals. Methods: A self-reported questionnaire was answered by 250 clinical dental hygienists in Seoul, Gyeonggi, Chungcheong, Jeolla and Gyeongsang province areas who were chosen using convenient sampling method from May 1st to June 30th of 2017. The data was analyzed using IBM SPSS/WIN 22.0 factor analysis on clinical dental hygienists' organization citizenship behavior, organizational commitment, empowerment, self-leadership and job satisfaction. T-test and one-way ANOVA were performed for subjects' general characteristics and organizational citizenship behavior, organizational commitment, empowerment, self-leadership and job satisfaction depending on their job characteristics. The mean comparison was drawn using the Scheffe test. Pearson's correlation and multiple regression analysis were performed to examine the relation of clinical dental hygienists' organizational citizenship behavior, organizational commitment, empowerment, self-leadership and job satisfaction Also, the significance level was set at 0.05. Results: Clinical dental hygienists' organizational citizenship behavior was 3.84 points with organizational commitment of 3.27, empowerment of 3.41, self-leadership 3.45 and job satisfaction of 3.57. Factors that influence clinical dental hygienists' organizational citizenship behavior appeared in the order of organizational commitment, job satisfaction, self-leadership, empowerment and job intensity, and the model's explanation power was 45.6%. Conclusions: Clinical dental hygienists' organizational citizenship behavior was correlated to career, organizational commitment, empowerment, self-leadership and job satisfaction, where organizational commitment had the biggest influence. Therefore, clinical dental hygienists organizational citizenship behavior needs further studies and investigtae more ways to promote factors that influence organizational citizenship behavior.