A study on mixed cation perovskite-based UVC photodetector with improved performance

최가인,최형욱 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.1

Ultraviolet (UV) detectors are used in diverse areas of light detection and image analysis, such as astronomy, medicine, and environmental monitoring. Most of the UVC emitted from the sun is absorbed by ozone and does not reach the earth's surface; as a result, only a weak signal is detected. However, UVC is also produced by artificial sources and can have detrimental effects on health and materials. To measure UVC accurately it is desirable to develop a semiconductor UVC photodetector that converts an incident optical signal into an electrical signal for analysis. Recently, ultraviolet detectors based on the semiconductor characteristics of perovskite have attracted attention. Perovskite effectively absorbs a wide range of wavelengths and has high charge-carrier mobility. In this study, the (FAPbI3)x(MAPbI3)1-x mixed cation perovskite was used as the light-absorbing layer of a photodetector. The parameters investigated in this study are showing the performance of the photodetector, including the on/off ratio, responsivity, detectivity, and external quantum efficiency. (FAPbI3)0.925(MAPbI3)0.075 film has a high on/off ratio of 877, a responsivity of 5.87 mA/W, a detectivity of 4.15 × 1012, and an external quantum efficiency of 28.7%. These results suggest that perovskite prepared with mixed cations can be a promising candidate for UV C photodetector materials.

안동 및 울산 사문암지역에 발달된 토양층의 특성과 원소들의 분산특성

최가인,김근수,김진섭 대한지질학회 1998 대한지질학회 학술대회 Vol.1998 No.

공감적 듣기의 수업 모형 연구

최가인 국어교과교육학회 2017 국어교과교육연구 Vol.29 No.-

의사소통은 인간의 삶의 질을 결정짓는 중요한 요소이기에 효과적인 의 사소통을 하는 방법에 대한 교육 역시 중요하다. 특히 인간성이 상실되고 있는 현대사회는 의사소통으로 인해 발생하는 갈등을 해결하고, 인간관계를 원만하게 하는 화법교육을 필요로 한다. 그러한 교육의 일환으로서 공감적 듣기는 판단하지 않고 상대방의 관점에서 공감해주고 격려하며 적절하게 반응하는 적극적인 듣기 방법으로, 현대사회에 꼭 필요한 대화 기술이라고 할 수 있다. 따라서 본 연구에서는 관계 중심적 듣기에 해당하는 공감적 듣 기의 개념을 살피고 교육 원리를 설정하여 공감적 듣기의 수업 모형 및 그 전략을 제안하고자 하였다. 먼저 관계 중심적 듣기로서 공감적 듣기는 언어적 메시지의 정확한 수용 과 이해와 같이 언어 중심적 듣기가 아닌 무엇보다 청자의 듣기 태도와 자 세가 중요한 듣기이다. 또한 의사소통 과정에서 정확한 의미 및 감정을 인 지하려고 노력하는 적극적인 듣기이자 수용과 이해 중심의 듣기이며, 적극 적인 피드백을 제공하는 능동적인 듣기이다. 이러한 공감적 듣기의 개념을 바탕으로 교육원리를 ‘인간 존중의 정신과 언어 사용’, ‘수용의 태도 및 배 려의 자세 함양’, ‘공감적 듣기 지식의 내면화’, ‘실제 맥락에서의 듣기 활동 수행’으로 제시하였다. 교육원리에 따라 본고에서 제안한 공감적 듣기의 수업 모형은 ‘깨닫기’, ‘수행하기’, ‘내면화하기’의 세 단계로 구성되며, 실제 수업에서 활용될 수 있는 전략을 함께 제시하였다. 깨닫기 단계는 학습자가 공감적 듣기의 필요성에 대해서 자각하고, 이를 수행하기 위한 공감적 듣기의 지식을 습득하는 단계이다. 수행하기 단계는 학습자의 삶의 맥락이 반영된 공감적 듣기의 과 제를 제시하고 이를 수행하는 단계이며, 내면화하기 단계는 수행 결과를 바 탕으로 학습자가 자신의 듣기 태도를 성찰하고 조정하는 활동과 조정된 공 감적 듣기의 지식 및 태도를 내면화하는 활동으로 이루어진다. 화법교육은 ‘언어’가 아닌 ‘인간’이 중심이 되고 학습자의 듣기․말하기 능력의 신장에 기여하며 삶을 풍요롭게 하는 교육이 되어야 한다. 이 연구 는 관계 중심적 듣기로서 공감적 듣기 교육의 중요성을 고찰하여 그 교육 원리를 설정하고, 학습자의 공감적 듣기 능력을 신장시킬 수 있도록 수행 중심의 공감적 듣기 수업 모형을 제안했다는 점에서 의의가 있다. Communication is an important element to determine the quality of human life. So it is also important to educate how to communicate. Especially, losing humanity, modern society requires speech education to resolve conflicts caused by communication and to smooth human relationships out. As part of that education, empathic listening is to empathize from an opponent ’s perspective, to encourage and to react properly and is a really necessary communication technique for modern society. Therefore, this study aims to suggest empathic listening instructional model and strategy by considering the concept of empathic listening, which belongs to relation-centered listening and setting the educational principles. Firstly, for empathic listening, as relation-centered listening, accurate acceptance of linguistic message and listener ’s listening attitude and behavior are important more than language-centered listening. Besides, this is aggressive listening to try to recognize accurate meaning and emotion in communication, acceptance and understanding-centered listening and active listening to provide aggressive feedback. Based on this concept of empathic listening, the educational principles were classified into ‘spirit of human respect and language use’, ‘development of attitude and behavior for acceptance’, ‘internalization of empathic listening knowledge’ and ‘execution of listening activities in a real context’. According to the educational principles, the instructional model of empathic listening devised by this study consists of three stages; ‘realizing’, ‘executing’ and ‘internalizing’ and a strategy, which can be applied to a real instruction, was suggested together. The stage of realizing is to realize the necessity of empathic listening and to acquire knowledge of empathic listening. The stage of executing is to present an empathic listening task, which reflects the context of learner ’s life and to execute this. The stage of internalizing is reflect on and adjust learner’s listening attitude, based on the execution result and to internalize adjusted empathic listening knowledge and attitude. Speech education must be ‘human’-centered, not ‘language’-centered and help in enriching life by contributing to improvement in learner’s listening and speaking abilities. This study has significance by considering the importance of empathic listening as relation-centered listening, setting the educational principles and suggesting an execution-based empathic listening instructional model for enhancing learners ’ empathic listening abilities.

간호학생의 임상수행능력, 임상실습 스트레스, 눈치

이민아, 강하늘, 이수민, 이은채, 최가인, 강문희 배재대학교 자연과학연구소 2023 自然科學論文集 Vol.34 No.1

The purpose of this study was to investigate the relationship among clinical performance, clinical practice stress, and Nunchi of nursing students. Data were collected from 42 nursing students with clinical practice experience between June 11, 2023, and July 13, 2023. The data analysis was performed using the SPSS/WIN 22.0 program, and analyzed through the Mann-Whitney U-test, Kruskall-Wallis test, and Pearson correlation coefficient. The results revealed a negative correlation between clinical performance and clinical practice stress (r = -.332, p = .032), and a positive correlation between clinical performance and situational awareness (r = .663, p < .001). Therefore, to enhance the clinical performance of nursing students, multidimensional efforts are needed to reduce clinical practice stress and improve overall satisfaction with university life and situational awareness skills. 본 연구는 간호학생의 임상수행능력, 임상실습 스트레스와 눈치를 파악하고 각 변수간의 상관관계를 확인하고자 시행되었다. 연구 대상은 임상실습 경험이 있는 간호학생 42명이며, 2023년 6월 11일부터 7월 13일까지 온라인 설문을 통해 자료를 수집하였다. 자료 분석은 SPSS/WIN 22.0프로그램을 이용하였으며 Mann-whitney U-test와 Kruskall-wallis test, Pearson correlation coefficient로 분석하였다. 연구 결과 임상수행능력은 임상실습 스트레스와 음의 상관관계(r=-.332, p=.032)가 있었으며, 눈치와는 양의 상관관계(r=.663, p<.001)가 있는 것으로 나타났다. 따라서 간호학생의 임상수행능력을 높이기 위해서는 임상실습 스트레스를 낮추고 대학생활 만족도와 눈치 역량을 높이기 위한 다각도의 노력이 필요할 것이다.

잘나왔닷

주현우,최가인,임성용,이유진,김재현 한국컴퓨터정보학회 2023 한국컴퓨터정보학회 학술발표논문집 Vol.31 No.2

성별에 따른 대학생 음주습관과 간 건강에 대한 인식도

양현서(Hyun-Seo Yang),최가인(Ga-In Choi),백경원(Kyung-Won Baek),이지혜(Ji-Hye Lee),김혜진(Hye-Jin Kim),이정화(Jung-Wha Lee),윤현서(Hyun-Seo Yoon),이민경(Min-Kyung Lee) 한국구강보건과학회 2017 한국구강보건과학회지 Vol.5 No.1

This study evaluated the drinking habits of college students and their perception regarding the liver health by gender. The target students attended colleges located in Busan area. The most common social perception of drinking was “Drinking alcoholic beverage is essential for making a good interpersonal relationship (3.49 points)”. “It is good for the man to know how to drink alcoholic beverage (3.49 points)” was the second and the third was “Alcoholic drink makes life more elegant and tasteful (3.01 points)”. Among 15 questions related to the knowledge on the liver health, respondents showed more than 90% correct answer rate only for three questions, which were “Drinking can cause esophageal cancer, liver cancer, cardiovascular diseases, and hepatocirrhosis (94.3%)’, ‘Drinking alcohol well does not mean that the person is healthy (93.3%)’, and ‘The incidence of cirrhosis is high when drinking alcohol for 15-20 years or more. (93.0%)’. The results indicated that the level of knowledge was not much different between genders. Therefore, it will be necessary to prepare education material to improve the behavior of the male since the male had more generous drinking perception and more frequent drinking binge frequency, although the level of knowledge was little different between genders.

치과방문 환자들의 추구 성향에 따른 입소문에 관한 연구

이민경,김경민,박명희,최가인,박희진,전현희,김혜진 사단법인 인문사회과학기술융합학회 2017 예술인문사회융합멀티미디어논문지 Vol.7 No.4

The purpose of this study was to evaluate the effect of the mouth of the tendency of seeking dental patient vistis. Data were collected from 250 people living in Busan and Gyeongnam areas between April 2016 to and May 2016 with self-recording questionaires. Final subjects analyzed the final 239 questionnaires. The results of this study were as follows. First of all, The characteristic of relationships category, Age 20~30 was higher in age group, a lot of Female more than male. student is more than other occupations.In both cases, many cases have figured the rumors propagated for 3-4 people with high degree of positive rumors indicate that the ripple is about family and close friends. As a result of analyzing the correlation between personal inclination and positive / negative word of mouth, there was a positive correlation between personal inclination and positive word of mouth. (R = 0.418, p = 0.000). Positive word of mouth and negative word of mouth (r = 0.113, p = 0.082) were not statistically correlated with personal inclination and negative word of mouth (r = 0.102, p = 0.115). Judging from the above results, to augment the Reflecting these factors establish an effective marketing management and medical institutions to establish a dental marketing strategy that is larger than the negative spillover effects of positive rumors rumors is considered to be unfounded. 본 연구는 부산·경남 지역에 있는 일반인을 대상으로 개인적 성향이 진료기관 선택에 미치는 영향에 대해 알아보고자 2016년 4월부터 5월까지 총 250명을 대상으로 자기기입식 설문조사를 실시하였고, 최종 239명의 자료를 조사 분석한 결과는 다음과 같다. 사회인구학적 특성에서 연령은 20세 이상 30세 미만이 가장 많았고, 여성의 비율이 많았으며 직업은 학생이 가장 많았다. 긍정적 소문을 낸 경우가 부정적 소문을 낸 경우보다 많았고, 두 경우 모두 3~4명 에게 소문을 냈다고 한 경우가 많아 긍정적 소문의 전파도가 높고 가족과 친한 지인정도로 파급된다 라는 것을 나타낸다. 개인적 성향과 긍정적·부정적 입소문 간의 상관관계를 분석한 결과 개인적 성향과 긍정적 입소문은 양의 상관관계가 있었다. (r=0.418, p=0.000). 개인적 성향과 부정적 입소문(r=0.102, p=0.115), 긍정적입소문과 부정적 입소문(r=0.113, p=0.082)은 통계적으로 상관관계가 없는 것으로 나타났다. 이상의 결과를 미루어 볼 때, 부정적 소문보다는 긍정적 소문의 파급 효과가 크므로 치과 의료 기관 마케팅 전략을 수립할 때 이러한 요소들을 반영하여 효과적인 마케팅을 수립하여 경영성과를 증대 시키는데 근거가 될 것으로 사료된다.

Effect of Gomsol Extract (Pinus thunbergii) on Anti-inflammation and Hair Loss Preventionn

황세운,황혜영,김은지,최가인,김배환 환경독성보건학회 2023 한국독성학회 심포지움 및 학술발표회 Vol.2023 No.11

유기 및 관행농법 농경지의 무척추동물 생물다양성 비교

김훈 ( Kim Hoon ),서재휘 ( Seo Jae-hwi ),김교진 ( Kim Kyo-jin ),최가인 ( Choi Ga-in ),조영주 ( Jo Young-ju ),김태연 ( Kim Tae-yeon ),문명진 ( Moon Myung-jin ) 한국유기농업학회 2017 韓國有機農業學會誌 Vol.25 No.4

Although some skeptical views arguing that the impact of organic farming is quite limited to sustainable biodiversity, the organic agriculture has been generally accepted to have positive effects on various properties of soils not only on biophysical and ecological properties but also on biodiversity of the field. Therefore, this field investigation has been conducted to examine the effect of organic farming, relative to conventional agriculture, through a comparative investigations of the two systems for conserving local biodiversity of invertebrate animals. For this research, organic and conventional farming locations matched with both of a paddy field and a upland fields in Goesan-gun province (Chungcheongbuk-do, South Korea) were selected to compare the species richness of invertebrate biodiversity as follows: location OP (Organic Paddy field), location OU (Organic Upland field), location CP (Conventional Paddy field), and location CU (Conventional Upland field). Among 249 species collected, the numbers of species collected in the locations practicing organic farming were greater than the locations practicing conventional farming both in paddy fields (104 vs. 84 species) and upland fields (108 vs. 77 species). Changes in species richness can be shown in the selected locations depending on the agriculture system with organic (50 species) or conventional (44 species) farming systems in the paddy fields, similarly with organic (42 species) or conventional (35 species) farming in the upland fields, respectively. Our present research clearly shows that a wide range of taxa, including insects, spiders and other invertebrates, benefit from organic management through increases in abundance or species richness. It has been also identified that four orders (Hemiptera, Diptera, Hynemoptera, and Araneae) that are largely intrinsic to organic paddy field, and another three orders (Hemiptera, Coleoptera, and Araneae) that are particularly beneficial for organic crop field regime.

영상 탐지 기술을 이용한 건축물 크랙 검출에 관한 연구

김기웅(Kim, Ki-Woong),윤효운(Yun, Hyo-Woon),최가인(Choi, Ga-in),이시현(Lee Si-Hyeon),유무영(Yoo, Moo-Young) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.1