• 한국지구과학회지
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• 제25권3호
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• pp.176-184
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• 2004

The concept of 'the lunar and planetary phases' is very difficult to understand and students may have various misconceptions on this concept. A module drawing the lunar and planetary phases was developed with the application of the simplifying conditions method. The effects of instruction using the module drawing the lunar and planetary phases on the conceptual change and the achievement was investigated in the consideration of learners' characteristics (spatial perception ability, science inquiry ability, required pre-requested learning ability). Findings were as follows: 1) This module was effective for learners' conceptual change and achievement, 2) This module had a positive influence for development the learners' characteristics and conceptual change with the middle level of science inquiry ability, the middle and low level of required pre-requisite learning ability, and middle level of the spatial perception ability.

• 대한가정학회지
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• 제46권8호
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• pp.73-84
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• 2008

The aim of this study was to identify perception discrepancies related to organizational effectiveness in childcare center. To achieve this, managers and teachers were treated as two different subjects. Statistical analysis showed that perception influences differed between managers and teachers. Managers were affected by organizational characteristics and director of the organization. On the other hand, teachers were affected by organizational characteristics and the manager of the child-care center. It was established that the different view points of managers and teachers led to a situation where a manager perceived organizational effectiveness in a more holistic and positive light compared to teachers. It is our assertion that in order to run a child-care center efficiently, it is very important to fortify the ability and authority of managers.

• 부모자녀건강학회지
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• 제9권1호
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• pp.55-61
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• 2006

Purpose: The purposes of this descriptive survey study were to determine the relationships between the perception on the temperament and behavior problems of their children and mothers' characteristics with preschoolers. Method: Data were collected from 125 mothers of preschoolers in Kunpo city. The instruments used for this study were Korean CBCL, childrearing burden, mother's health questionnaire, and social support. Results: There were significant differences in the behavior problems according to preschooler's temperament. Difficult children were more hyperactive, withdrawn, aggressive, and premature in behavior. Preschoolers' behavior problems showed significant relationships with mothers' health problem, childrearing burden, and social support. Conclusion: Preschoolers' behavior problems are affected by their temperament, and related with mothers' characteristics. It is important to identify parents' perception on their children's temperament and behavior problems, and the parental role education programs are necessary.

• 디지털산업정보학회논문지
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• 제19권4호
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• pp.53-71
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• 2023

This study explores the relationship between various user factors and the level of trust in ChatGPT, a sophisticated language model exhibiting human-like capabilities. Specifically, we considered demographic characteristics such as age, education, gender, and major, along with factors related to previous AI experience, including duration, frequency, proficiency, perception, and familiarity. Through a survey of 140 participants, comprising 71 females and 69 males, we collected and analyzed the data to see how these user factors have a relationship with trust in ChatGPT. Both descriptive and inferential statistical methods, encompassing multiple linear regression models, were employed in our analysis. Our findings reveal significant relationships between user factors such as gender, the perception of prior AI interactions, self-evaluated proficiency, and Trust in ChatGPT. This research not only enhances our understanding of trust in artificial intelligence but also offers valuable insights for AI developers and practitioners in the field.

• 자동차안전학회지
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• 제16권2호
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• pp.14-19
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• 2024

This paper describes autonomous emergency braking systems (AEB) for elderly drivers designed to consider their driving characteristics. With aging, perception-reaction time, and decision-making time increase accordingly. Without being aware of these performance degradations, however, changes in driving patterns due to increased alertness while driving lead to vehicle crashes. Therefore, it is necessary to develop an autonomous emergency braking system by incorporating the characteristics of the elderly driver. In order to enhance the driver acceptance of older people, perception-reaction time, alertness, and ride comfort need to be considered for conventional autonomous emergency braking systems (C-AEB). Proactive AEB(P-AEB) algorithm has been proposed to reflect human factor of elderly driver above. The performance of the proposed algorithm has been evaluated through MATLAB simulink simulation studies. It has been shown from the computer simulations that the proposed P-AEB algorithm enhances the driver acceptance of older people by improving ride comfort while ensuring safety of vehicle.

• 한국컴퓨터정보학회논문지
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• 제25권1호
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• pp.199-206
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• 2020

본 연구에서는 소비자가 인공지능 스피커를 사용하고자 하는 의도에 영향을 미치는 요인을 제품에 대한 가치 지각과 제품 필요성 지각을 중심으로 연구하였다. 소비자의 제품에 대한 가치 지각에 영향을 미치는 요인으로 편익과 비용을 구분하였고, 정보기술 제품이라는 특성을 반영하여 제품에 대한 유용성 지각을 포함시켰다. 실증 연구결과, 인공지능 스피커 제품에 대한 소비자의 편익 지각과 유용성 지각은 가치 지각과 필요성 지각에 각각 정적(+)으로 영향을 미쳤고, 필요성 지각은 가치 지각에 정적(+)으로 유의한 영향을 미쳤으며, 필요성 지각과 가치 지각은 각각 사용 의도에 정적(+)으로 유의한 영향을 미쳤다. 그렇지만, 소비자가 지각하는 비용은 가치 지각에 유의한 영향을 미치지 않았다.

• 통상정보연구
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• 제19권4호
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• pp.3-28
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• 2017

본 연구는 해외직접구매 사이트에 대한 소비자 태도를 유발하는 요인들을 혜택지각요인, 위험지각요인, 제품측면, 웹사이트측면에서 종합적으로 살펴봄으로써 각각의 요인들의 상대적인 영향력을 비교하였다. 이를 위해 해외직접구매 경험이 있는 한국소비자 298명을 대상으로 실증분석 하였다. 분석결과 해외직접구매 사이트에 대한 신뢰수준에 가장 높은 영향을 미치는 요인은 배송위험과 제품성능위험으로 나타났다. 또한 해외직접구매 사이트에 대한 신뢰수준은 추천의도와 지속적 이용의도에도 강력한 영향력을 가진다는 것을 본 연구결과를 통해 확인할 수 있었다. 아울러 본 연구는 해외직접구매의 유형(해외직접배송, 해외구매대행, 해외배송대행)과 소비자들이 주요하게 구매하는 제품군(의류, 식 음료품, 가전제품)에 따라 평균차이검정을 수행하였다. 이를 통해 각각의 해외직접구매 서비스 관련 주체별, 소비자 특성별로 적용될 수 있는 다양한 실무적 시사점들을 제안하고자 하였다.

• 교육시설 논문지
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• 제23권1호
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• pp.43-54
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• 2016

The purpose of this study was to survey teachers' perception of classroom space utilization through analyzing the physical environment of elementary school classrooms (56 classrooms in 10 schools). Most of the teachers arranged desks in the two person parallel type (sectional layout : standard type) for their classes. Although the number was small, some classrooms used the T type, H type, U type, group type, and the teachers of such cases used these layouts for children's play activities or group learning. Some teachers changed the desk layout depending on the contents of learning or for different atmosphere of class, but about 40% of the teachers used the same classroom layout without any change during a semester. When the teachers' perception of classroom space utilization was examined according to the type and change of desk layout, the quantity and characteristics of posts, the position of posting spaces, and the size of activity spaces in the classroom, most of the teachers tended to be conventional without any characteristic, and only 16% of them were relatively active in utilizing classroom spaces. In addition, teachers of a relatively small class were more active in utilizing classroom spaces. In particular, perception was very low to utilize the classroom as a space for children's life or play activities or various types of learning. These findings suggest that it is necessary to improve teachers' perception of classroom space utilization in the future.

• 한국치위생학회지
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• 제15권4호
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• pp.687-694
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• 2015

Objectives: The purpose of the study is to investigate the subjective oral status perception and OHIP according to the oral health managementamong international and domestic university students. Methods: self-reported questionnaire was completed by 176 domestic and 175 international university students in Daegu and Gyeongbuk from August 25 to November 1, 2014. The informed consent was received after explanation of the purpose of the study by the researcher. The questionnaire consisted of general characteristics of the subjects, toothbrushing behavior, oral health management, subjective oral status perception. and oral health impact profile (OHIP). The subjective oral status perception and OHIP was measured by Likert 5 point scale. Results: The international students tended to have higher subjective oral status perception when they had longer stay with the roommate in Korea. The female international students tended to have higher OHIP than the male students. The domestic students with lower grades and roommates showed higher OHIP. The international students had a poorer practice of oral health management than domestic students. The overall mean of subjective oral status perception was 3.13 in domestic students, and 3.09 and 3.22 in international students. The overall mean of OHIP was 4.21 in domestic students and 4.25 and 4.16 in the international students, Conclusions: International students had a higher subjective oral status perception than domestic students, but their wrong oral health management lowered their quality of life. It is necessary to provide the oral health management for the international students continuously.

• 한국치위생학회지
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• 제15권3호
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• pp.417-424
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• 2015

Objectives: The purpose of the study is to investigate the relationship between oral health conditions and their subjective oral health perception in the elderly in Gimcheon. Methods: The study subjects were 214 elderly aged over 65 years old in Gimcheon. The study was carried out by direct interview method of from February 20 to 24, 2014. The oral examination was performed by the dentist base on the World Health Organization criteria including direct examination and observation. The questionnaire consisted of sex, type of family, use of medical services, and oral health behavior, The independent variable included three questions of the general characteristics of the subjects, two questions of use of medical services, and two questions of oral health behavior. The subjective oral health perception was composed of heathy and unhealthy. The objective oral health condition was evaluated by number of residual teeth, FT index, MT index, and DMFT index. Results: In the elderly, the number of residual tooth was $8.89{\pm}9.72$ and the number of decayed teeth was $0.03{\pm}0.20$. The numbers of missing teeth and filled teeth were $19.26{\pm}9.65$ and $0.28{\pm}1.01$, respectively. The DMFT index was $19.57{\pm}9.28$. In relation to the subjective oral health perception, 76.6% answered 'good' and 23.4% answered 'bad'. The subjective oral health perception showed a weak quantitative linear relationship of r=0.235 with the number of residual tooth. the subjective oral health perception showed a weak negative linear relationship(p<0.01) of r=-0.225 with the number of missing teeth and r=-0.217 with DMFT(number of decayed missing and filled teeth) index.