• Bulletin of the Korean Chemical Society
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• 제31권11호
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• pp.3115-3117
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• 2010

The voltammetric study on a water-soluble calix[4]arene-diquinone-diacid (CDA) in pH 7.4 in the presence of $Ca^{2+}$ ion provided important information about the unique electrochemical behavior of CDA-$Ca^{2+}$ complex. Using CDA, $Ca^{2+}$ ion in aqueous solution was recognized quantitatively by voltammetric techniques.

• 소성∙가공
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• 제11권7호
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• pp.614-619
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• 2002

For an accurate measurement of the material behavior of small structures, a new optical experimental technique is proposed to measure the deformation. The test method uses the dual microscope that can measure the relative deformation of two adjacent regions. The magnified view is captured by CCD cameras and the relative deformation can be measured by the pattern matching and tracing method. Using this experimental technique, the deformation of solder joints in electronic packaging and the strain of the nickel thin film are measured.

• 한국전자통신학회논문지
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• 제17권1호
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• pp.111-118
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• 2022

컴퓨터 비전 연구에서 2차원 인체 자세는 매우 광범위한 연구 방향으로 특히 자세 추적과 행동 인식에서 유의미한 분야다. 인체 자세 표적 획득은 이미지에서 인체 목표를 정확히 찾는 방법을 연구하는 것이 핵심이며 인체 자세 인식은 인공지능(AI)에 적용하는 한편 일상생활에 활용되고 있어서 매우 중요한 연구의의가 있다. 인체 자세 인식 효과의 우수성의 기준은 인식 과정의 성공률과 정확도에 의해 결정된다. 본 연구의 인체 자세 인식에서는 딥러닝 전용 데이터셋인 MS COCO를 기반하여 인체를 17개의 키 포인트로 구분하였다. 다음으로 주요 특징에 대한 세분화 마스크(segmentation mask) 방법을 사용하여 인식률을 개선하였다. 최종적으로 신경망 모델을 설계하고 간단한 단계별 학습부터 효율적인 학습에 이르기까지 많은 수의 표본을 학습시키는 알고리즘을 제안하여 정확도를 향상할 수 있었다.

• 산업융합연구
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• 제21권10호
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• pp.1-11
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• 2023

본 연구는 주로 지각된 과잉자격의 부정적인 영향에 초점을 둔 기존연구의 관점에서 벗어나 지각된 과잉자격이 창의적 행동에 미치는 긍정적인 영향에 대해 분석하였다. 중국에서 금융업에 종사하는 종업원 282명을 대상으로 설문조사하여 구조방정식모형분석을 활용하였다. 분석결과, 지각된 과잉자격은 종업원의 창의적 행동에 긍정적인 영향을 미치는 것으로 나타났으며, 지각된 과잉자격과 창의적 행동 간의 관계에서 감정소진과 잡 크래프팅은 매개효과가 있는 것으로 나타났다. 본 연구는 지각된 과잉자격이 창의적 행동에 긍정적인 영향을 가져온다는 것은 지각된 과잉자격의 영향효과에 대한 연구를 어느 정도 풍부하게 하였으며, 창의적 행동, 감정소진, 잡 크래프팅, 조직지원인식의 관계를 실증함으로써 이론적, 실무적 시사점을 제공하였다. 과잉자격 인식에 대한 논의는 주로 종업원 개인 수준에 머물러 있으며 향후연구는 팀 수준 또는 조직 수준으로 확대해서 연구할 필요성이 있다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.1349-1350
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• 2013

• 한국치위생학회지
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• 제14권3호
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• pp.391-398
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• 2014

Objectives : The purpose of the study is to investigate the oral health knowledge and behavior in teachers with or without the school dental clinic. Methods : The subjects were 133 teachers with or without the school dental clinic in Gunsan. A self-reported questionnaire was filled out by the teachers from September 9 to November 2, 2013. The data were analyzed by SPSS version 21.0. Results : The groups were divided into two. Experimental group was school dental clinic operation group and the control group was no operation group. The experiment group showed the high score of recognition of fluoridation and sealant(p<0.01). The control group showed the high score of recognition of sealant(p<0.01). Conclusions : Continuous operation of the school dental clinic is essential to promote the lifelong oral health care in the elementary school children and the teachers. So the nationwide expansion of the continuous school dental clinic is very important to prevent the dental caries in the elementary school children.

• 한국생활과학회지
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• 제15권2호
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• pp.187-196
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• 2006

This study aims to 1) develop the Secondhand Smoke prevention program using project approach program for young children aged 4 to 5 years, 2) estimate the influence of project approach program on the prevention of their secondhand smoke, and 3) suggest effective strategies to ultimately encourage a smoke-free environment for them. The participants of an experimental group included a total of 64 preschoolers (42 boys and 22 girls) from one child-care center in Gyeonggi province. The sample of a controlled group was 49 preschoolers (30 boys and 19 girls) from one child-care center in Daegu province. Before and after experiencing project approach program on the prevention of secondhand smoke, each of them was asked to respond to such questions as recognition, attitude, and coping behavior of secondhand smoke. It has revealed that, after the program, those in the experimental group showed greater degree of recognition, more negative attitude, and more active coping behavior of secondhand smoke than those in the controlled group.

• 한국식품조리과학회지
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• 제33권3호
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• pp.353-362
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• 2017

Purpose: This study aimed to identify the perception of quality-certified children's preferred foods as well as consumption behaviors of nursery directors and parents. Methods: A total of 243 nursery directors and parents of preschool children were surveyed using questionnaires. Results: Parents' perception scores were lower than directors' scores for many of the questions. Parents showed significantly higher scores for food safety standard questions and nutritional fortifying questions than directors (p<0.001 each). On the other hand, directors showed significantly higher scores for questions about products nutrition and safety (p<0.001, p<0.01). When buying children's favorite food items, food additives and hygiene level of vendors were the most important, in that order. Parents' scores for questions on purchasing behaviors of quality-certified children's preferred foods were significantly higher than those of directors'. Further, respondents with nutritional education experience showed high behavior scores. Conclusion: It can be concluded that promotion of quality-certified children's preferred foods is insufficient. The nutrition education group showed high scores for perception and positive consumption behaviors of quality-certified children's preferred foods. It is important to cooperate with nursery directors and parents of preschoolers to further children's nutritional education.

• 로봇학회논문지
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• 제18권4호
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• pp.463-471
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• 2023

This paper proposes a method to estimate the level of interest shown by visitors towards a specific target, a guide robot, in spaces where a large number of visitors, such as exhibition halls and museums, can show interest in a specific subject. To accomplish this, we apply deep learning-based behavior recognition and object tracking techniques for multiple visitors, and based on this, we derive the behavior analysis and interest level of visitors. To implement this research, a personalized dataset tailored to the characteristics of exhibition hall and museum environments was created, and a deep learning model was constructed based on this. Four scenarios that visitors can exhibit were classified, and through this, prediction and experimental values were obtained, thus completing the validation for the interest estimation method proposed in this paper.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제16권4호
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• pp.207-216
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• 2012

Through quantitative video analysis of four algebra classes and statistical analysis of various types of teacher evaluation behavior in the classroom teaching, we get: (1) Teacher evaluation behavior in classroom is close to take 1/5 of the total time of the classroom teaching, and it appears most frequently in class exercises and take the longest time; (2) There are many forms of teacher evaluation behavior in classroom, and most of the behaviors are positive assessment; (3) Recognition evaluation is relatively conservative in a single form without losing fairness; (4) Classroom assessments of teachers' behaviors are primarily concerned about students' knowledge and skills mastery, and it is less involved in student feelings, attitudes and behaviors; (5) The correct teacher evaluation behavior in classroom will inspire students to create internal motivations; and (6) The correct teacher evaluation behavior in classroom can stimulate the potential of students.