• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.167-167
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• 2022

최근 빅데이터에 관련된 연구에 있어 데이터의 품질관리에 대한 논의가 꾸준히 이뤄져 오고 있다. 특히 이미지 처리 및 분석에 활용되어온 딥러닝 기술의 경우, 분류 작업 및 패턴인식 등으로부터 데이터의 특징을 추출함으로써 비지도학습(Unsupervised Learning)을 가능하게 한다는 장점이 있음에도 불구하고 빅데이터를 다루는 과정에 있어 용량, 다양성, 속도 및 신뢰성 측면에서의 한계가 있었다. 본 연구에서는 CCTV 영상을 활용한 강수량 산정 모델 개발에 있어 예측 정확도 향상 및 성능 개선을 도모할 수 있는 데이터 전처리 방법을 제안하였다. 서울 근린 AWS 4개소 지역(김포장기, 하남덕풍, 강동, 성남) 및 중앙대학교 지점 내 CCTV를 설치한 후, 최대 9개월의 영상을 확보하여 강수량 산정을 위한 딥러닝 모델을 개발하였다. 배경분리, 조도조정, 영역설정, 데이터증진, 이상데이터 분류 등이 가능한 알고리즘을 개발함으로써 데이터셋 자체에 대한 전처리 작업을 수행한 후, 이에 대한 결과를 기존 관측자료와 비교·분석하였다. 본 연구에서 제안한 전처리 방법들을 적용한 결과, 강수량 산정 모델의 예측 정확도를 평가하는 지표로 선정한 평균 제곱근 편차(Root Mean Square Error; RMSE)가 약 30% 감소함을 확인하였다. 본 연구의 결과로부터 CCTV 영상 데이터를 활용한 강수량 산정의 가능성을 확인할 수 있었으며 특히, 딥러닝 모델 개발시 필요한 적정 전처리 방법들에 대한 기준을 제시할 수 있을 것으로 판단된다.

• Proceedings of the Korean Society for Information Management Conference
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• 2001.08a
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• pp.149-152
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• 2001

이용자 중심의 인터페이스 개발은 현재 검색시스템에서 가장 중요한 이슈가 되고 있다. 인터페이스에서 메타포의 사용은 바로 이용자 편의성을 높이는 방안이라 할 수 있다. 본 연구는 대학도서관과 공공도서관의 검색인터페이스에서 사용하고 있는 메타포의 유용성을 평가하였다. 그 결과 현재 사용되고 있는 메타포의 문제점은 비슷비슷하다는 점이며 한 이미지가 유일한 의미를 갖고 있지 못하여 혼동을 야기 시킨다는 점이며, 이미지와 텍스트간의 의미적 관계 또한 명료하지 않게 나타났다. 따라서 메타포 개발시 이미지에 담겨진 의미가 모든 이용자와 같을 수 있도록 논리적 유사점을 찾아내어야 할 것이다.

• Journal of the Korean School Mathematics Society
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• v.15 no.3
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• pp.453-465
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• 2012

In this paper, we first analysis definition of continuity of functions in high school textbooks, the mathematics high school curriculum and university mathematics textbooks. We surveyed what was causing the students to struggle in their concept image of continuity of functions. We arrived at that students' concept for errors in images of continuity of function were caused by definition of continuity of functions in high school textbooks.

• International Area Studies Review
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• v.13 no.3
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• pp.121-144
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• 2009

Consumers generally have different country images and purchasing patterns about products made in different countries. The essence of consumer behavior lies in psychological image on consumers' mind rather than actual characteristics of product itself. The current study examines how much country of origin influences consumers' purchase intentions focusing on Mexican products by consumers between Korea and the U.S. after establishment of NAFTA. The result of the study shows that there exists significant differences between Korean and the U.S. consumers' attitudes on purchasing Mexican products by structural equation modeling analyses.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.3
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• pp.284-295
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• 2017

This study examined the degree of nurses' image, professional self-concept, and organizational commitment of nursing students to clarify the relationship among these variables. A descriptive research design was used. The participants were 238 nursing students in J city who were surveyed between September 7 and 10, 2016. The data were analyzed using the SPSS WIN 21.0 program, which determined the frequency, percentage, mean, standard deviation, t-test, One-way ANOVA, Scheffe's test, Pearson correlation coefficient, and Stepwise multiple regression analysis. The nurses' image, professional self-concept, and organizational commitment of nursing students showed an average of 4.01, 3.40, and 3.77 points, respectively, based on a five-point scale. There was a statistically significant positive correlation between the nurses' image, professional self-concept and organizational commitment. In addition, there was a positive correlation between the professional self-concept and organizational commitment for nursing students. Two factors explained 56.3% of the organizational commitment of the nursing students. The relative influence affecting the organizational commitment Nurse image, and professional self-concept were found. The nurse image was confirmed to be the largest predictor of organizational commitment.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.3
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• pp.113-132
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• 2016

Positioning technique which has been widely used for making marketing strategy by analyzing customer's image also has been used for public and test-taker's image analysis about public facilities, entrepreneurs, universities. This study analyze image of library and Information science students who trying to find a job in library fields about diverse types of library and information centers by Positioning technique. As a result of Similarity cognition analysis by multidimensional Scaling and K-means clustering, it was found that students recognize that public, national, university, school library are similar, on the other hand, portal company and special library are different from those types. In the jobs, user service jobs and technical service jobs are recognized as separated clusters, and cultural program job is also recognized dissimilarly from those clusters. By the way, images about work satisfaction and stability of employment shows high in national library; high wage shows high in portal company; employee's growth potential shows high in special library; job importance shows high in reference service jobs; difficulty shows high in content's job. Anyway, in the workplace selection, almost students regard stability of employment as top priorities, accordingly they prefers public library at most. Such a preference concentration tendency is strongly appeared in local university students than in metropolitan area students as a result of Pearson's chi-square test.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.4
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• pp.556-566
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• 2016

This study examined the influence of satisfaction with clinical practice and the image of nurses on the nursing professionalism of nursing students. The subjects were 184 nursing students in B city who had experienced clinical practice. The data were collected from November 15 to December 15, 2014 and, analyzed using a t-test, ANOVA, Scheff's test, Pearson's correlation coefficients and multiple regression. Significant differences in the nursing professionalism by gender, religion, age, and school record were observed. Nursing professionalism was positively related to the satisfaction with clinical practice. In addition, there was a positive correlation between the nursing professionalism and image of nurses. Meaningful variables that influenced the nursing professionalism were satisfaction with the contents of clinical practice, image of nurses, satisfaction with the course of clinical practice, satisfaction with the environment of clinical practice, and school record. These factors comprised 75.8% of the total variance in the nursing professionalism of nursing students, and the satisfaction with contents of clinical practice was the most influential factor. In conclusion, to increase the nursing professionalism of nursing students, it is necessary to develop educational programs and institutional strategies to improve the satisfaction with clinical practice and the image of nurses.

• Journal of the Korean Applied Science and Technology
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• v.40 no.6
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• pp.1350-1362
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• 2023

This study aims to identify the influence of the image of Chinese Taekwondo leaders at university on the athlete's grit, psychological state, and performance. The analysis is expected to contribute to the quality development of Chinese universities' Taekwondo program in the future. For this study, a population was selected from athletes at a university in Henan Province, China. The samples were taken by convenience sampling method. Of the 380 questionnaires retrieved, a total of 365 were used to process the results, excluding 15 insincere responses or missing values. The collected data were conducted by frequency analysis, correlation analysis, reliability analysis, exploratory factor analysis and multiple regression analysis using SPSS 23.0 program. The results of this study are as follows. First, the sub-factors of the leader image, the leader's social activities and vocational awareness, qualities, tasks and roles, were found to have a significant impact on the grit of taekwondo athletes. Second, the sub-factors of the leader image, the leader's social activities and vocational awareness, qualities, attitudes, tasks and roles had significant impact on the phychological state of taekwondo athletes. Third, social activities, vocational awareness, quality, and attitude of the leader, which are the sub-factors of the leader image, have a significant impact on the performance of taekwondo athletes.

• Archives of design research
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• v.16 no.4
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• pp.255-266
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• 2003

The Purpose of this study is to develop color palettes for the campus environment to find an identity of various Universities in Korea. This research is focused on the Shin-chon campus of Yonsei University because it has a long history and a mixture of old and new modern buildings in the campus. It takes three steps to proceed this study. Firstly, it is needed to find the images and history of Yonsei University from the documents. In the second place, the colors should be collected from the building materials, four seasons in campus, buildings in campus. At this point, color measurement devices, NCS color system, digital camera and other appropriate devices were used for the study. The third step shows the results of the analysis and development of color palettes based on the analyzed materials from second step. This research suggests three major color groups. The typical main colors of the campus building are YR/anchromatic with middle level of value and chroma from the analysis. The sub-colors are similar to the main colors with pale/light grayish/dull/deep tone. The color palettes out of the results could be used as a standard for campus color scheme in the future to build an identity of Yonsei University.

• Journal of the Korean Applied Science and Technology
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• v.35 no.1
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• pp.122-130
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• 2018

The purpose of this study was to identify the nursing college students' problem solving ability, nurses' image and leadership and compare problem solving ability, nurses' amage and leadership after management clinical practice. A descriptive survey design was used 60 nursing students who 4th grade, during August 2014. Data were analyzed using mean, t-test, ANOVA with SPSS 21.0. The highest area was 'get a gob' in application motivation, 'from nurse during clinical training' in most influencing events. Satisfaction with nursing as major was 83.4% above 'moderate'. There were significant mean differences in nurses' image according to having relation nurse and satisfaction with nursing as major, leadership according to application motivation and satisfaction with nursing as major and personality, problem solving ability according to having relation nurse and personality. The subject scored 3.32 points of full 5 on problem solving ability, 3.41 of full 5 on nurses' image and 3.62 of full 5 on leadership before management clinical practice. Scores for problem solving ability(t=-2.15, p=.03), nurses' image(t=-2.67, p=.01) and leadership(t=-2.20, p=.03) showed statistically significant increases after management practice. The result should be reflected in the development of effective teaching for management clinical practice.