• 한국정보교육학회:학술대회논문집
• /
• 2004.01a
• /
• pp.195-206
• /
• 2004

본 연구는 음성 인식 기술을 적용해서 시범적으로 영어 학습 제품을 제작하고 이것을 현장에 적용한 후 설문과 관찰을 통해 결과를 해석하는 Pilot Test로 계획되었다. 본 연구의 목적은 음성 인식 영어 학습 제품 사용 후, 학생들의 학습태도 변화를 확인하고, 실험에 참가한 회원, 학부모, 교사의 만족도를 조사하고, 영어 교육학 전공자를 통해서 음성인식 영어 학습 제품의 완성도를 조사 분석하는 것을 목적으로 한다. 본 연구를 통해 도출된 data 들은 음성 인식 기술의 제품 적용 가능성을 검증해 주고, 향후 사업화 추진을 위한 근거 자료나 기초 자료로서의 역할을 할 것으로 기대한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2022.06a
• /
• pp.235-238
• /
• 2022

본 논문은 인식이 어려운 조명 환경에도 강인한 seven-segment 문자 인식을 위해서, 영상 내에 다양한 조명 연출이 가능하도록 합성 데이터 셋을 생성하고 학습할 수 있는 OCR 방법을 제안한다. 기존 연구에서는 deblurring 과 같이 영상 이미지의 해상도를 높여 문자 인식의 정확도를 향상시키는 것에 초점을 두었으나, 여러 조명 환경에 대비할 수 있는 OCR 관련 연구들은 부족하다. 이를 해결하기 위해 본 논문에서는 문자가 포함된 자연스러운 배경 영상에, seven-segment 문자를 합성시킨 후 relighting 을 적용함으로써 실제 환경과 유사한 장면을 연출해 새로운 합성 데이터 셋을 생성한다. 그리고 생성된 데이터 셋을 딥러닝 기반 학습시켜 다양한 조명에도 강인한 문자 인식기를 만들고자 한다. 합성 데이터 셋의 사용여부와 일반적인 데이터 augmentation 기법의 사용 여부를 비교하여, 본 논문에서 제안한 방법의 효과를 확인할 수 있었다. 이를 통해서 seven-segment 문자 인식 뿐만 아니라, 다양한 문자에 대해서도 적용될 수 있는 초석이 될 것으로 기대된다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2004.05a
• /
• pp.873-876
• /
• 2004

사람의 동작을 인식하는 것에 대한 연구는 게임, 유비쿼터스 컴퓨팅 등의 발전에 따라 그 중요성이 증가하고 있다. 그러나, 대부분의 기존 연구에서는 극히 소수의 동작만을 정의하거나 특정 부위의 동작만을 다루므로 실제 응용에 적용하기에는 적합하지 않다. 본 논문에서는 특정 도메인의 사용 없이, 카메라 영상 입력으로 취득된 동작 패턴 정보만을 이용하여 40종 전신 연속 동작을 구분하는 동작인식 방법을 연구하였다. 인식에 사용된 입력 데이터는 동작자 관절들의 위치 및 회전 값들이며, 다수의 동작들을 인식하기 위해서는 기존의 인식 알고리즘들인 특징기반 인식, HMM, 신경망(Neural Network)등을 사용하여 복합적인 인식 엔진을 구성하여야 했다. 입력 데이터별로 적합한 인식 모듈을 거치게 하기 위해서는, 동작에 의한 입력 데이터에서 동작자 움직임의 주요 신체 부위를 추출함으로써 입력 데이터가 해당 그룹의 인식 모듈로 자동적으로 분류되게 하는 방법을 사용한다. 이는 다층의 인식 레이어 중 복잡도가 증가하는 하위 레이어일수록 자동 분류에 의해 걸러진 데이터만을 취급하게 되므로 효과적이다. 전체 실험 결과 단계별로 약 79~97%의 인식률을 보였다. 이는 향후 특정 컨텍스트 정보와 결합할 때 매우 높은 인식률을 기대할 수 있게 하는 수치이다.

• The Journal of the Korea Contents Association
• /
• v.13 no.5
• /
• pp.332-341
• /
• 2013

The purpose of this study was to develop a perception of importance on patient safety management scale (PI-PSM) for Hospital Employee. The PI-PSM was developed and vallidated as follows: item generation, vertification of content validity, pilot study, and test of validity and reliability. In order to verify preliminary instrument, data was collected from 280 hospital employees. Data were analyzed by Varimax factor analysis and Cronbach's ${\alpha}$. There were 21 items in final instrument categorized into 4 factors as 'concern about patient safety management (7 items)', 'confidence about patient safety management (5 items)', 'will for patient safety management (5 items)', and 'recognition about patient safety management (4 items)'. The total varience explanined was 60.4%. The internal consistency, Cronbach's ${\alpha}$. was .86, and reliability of the sucscales ranged from .69 to .87. The results of this study may useful to assess the perception of importance on patient safety management.

• Journal of Convergence for Information Technology
• /
• v.9 no.3
• /
• pp.90-97
• /
• 2019

In order to identify relationships between oral health management behavior and subjective oral health perception and oral acid production in small and medium industry workers, an examination on oral acid production and a survey were conducted. As a result, the subjective oral health status, which is subjective oral health perception, was found to have a significant effect on oral acid production, and the worse the subjective oral health status was, the higher the oral acid production was. As the subjective oral health perception is expected to be helpful for the development of industrial oral health programs to improve oral health of workers, organizational and institutional efforts for industrial oral health education will be necessary for improvement of subjective oral health perception of workers.

• Journal of the Korean Applied Science and Technology
• /
• v.38 no.2
• /
• pp.595-607
• /
• 2021

This study attempted to investigate the perception of safety of regular polish and gel polish and degree of nail damage. For this, a questionnaire survey and an experiment were performed against women in their 20-50s, and the results found the followings: In terms of effectiveness, safety and degree of nail damage, gel polish was higher than regular polish. In addition, moisture/sebum levels and trans-epidermal water loss (TEWL) decreased after the experiment. Specifically, such reduction was greater in gel polish. When the nail surface was observed by a scanning electron microscope (SEM) after polish removal, gel polish revealed severe nail damage. The above results confirm that gel polish is greater than regular polish in terms of influence on the degree of nail damage. Therefore, it is anticipated that the study results would be available as basic data in keeping nails healthy and beautiful.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.18 no.3
• /
• pp.106-118
• /
• 2019

In recent years, research and development on image object recognition using artificial intelligence have been actively carried out, and it is expected to be used for road maintenance. Among them, artificial intelligence models for object detection of road surface are continuously introduced. In order to develop such object recognition algorithms, a backbone network that extracts feature maps is essential. In this paper, we will discuss how to select the appropriate neural network. To accomplish it, we compared with 4 different deep neural networks using 6,000 road surface damage images. Based on three evaluation methods for analyzing characteristics of neural networks, we propose a method to determine optimal neural networks. In addition, we improved the performance through optimal tuning of hyper-parameters, and finally developed a light backbone network that can achieve 85.9% accuracy of road surface damage classification.

• Journal of the Korean Chemical Society
• /
• v.58 no.6
• /
• pp.612-621
• /
• 2014

The purpose of this study is to examine the effect of peer mentor on academic achievement of mentee and views on nature of science. The experimental group was consisted of 20 mentor students, formed as a high level being less than 20% of achievement test, and 20 mentee, low level less than 15% of that. The mentoring activities were conducted 23 times for 8 weeks and progressed for 15~30 minutes after the teacher's main classes. During the mentoring activity, studying materials were provided to students and mentees asked to mentors for the parts which were difficult to understand among the contents of classes and got replies by arranging studying materials. As the results of this study, First, peer mentoring activity was shown statistically meaningful effects and improved the academic achievement in mentee's group than traditional classes (p<.01). But, there was no meaningful effects on mentor's achievement (p>.05). Second, the students who took part in the peer mentoring activity said that it was a good chance to have a close relationship between mentors and mentees. Also, the science recognition of the students were changed positively even though the science is hard and difficult to memorize, but interesting subject included the experiments. Third, the satisfaction of the peer mentoring activity is high both mentors and mentees (p<.01). Fourth, according to mentees' positive attitude, and as the level of closeness is higher, the academic achievement was increased. Based on this study, if teachers organize mentoring team effectively according to their closeness, one can expect the positive change of recognition on science as well as academic achievement of mentees.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2014.07a
• /
• pp.151-154
• /
• 2014

최근 무선인터넷 기술 및 기법의 발전에 힘입어 다수의 기업들이 대표적 마케팅 도구로서 모바일 광고(mobile advertising)의 활용방안을 모색하는데 많은 관심을 두고 있다. 본 연구는 향후 국내외에서 모바일 광고의 효과성을 높이기 위한 방안을 모색하는데 목적을 두고 있다. 이러한 연구목적을 달성하기 위하여, 본 연구에서는 한국과 중국에 거주하고 있는 무선인터넷 이용자들을 대상으로 설문조사를 실시함으로써, 무선인터넷 이용자의 인구통계적 특성(성별, 연령)과 무선인터넷 이용 특성(이용기기, 이용빈도)에 따라 모바일 광고가 갖추어야 하는 바람직한 특성(개인화, 편리성, 오락성, 경제성, 신뢰성, 유용성)에 대한 인식도가 달라지는가를 파악하고자 한다. 또한, 이러한 무선인터넷 이용자의 인구통계적 특성 및 무선인터넷 이용 특성과 모바일 광고의 특성간의 관련성이 설문응답자의 국적(한국, 중국)에 따라 달라지는가를 파악하고자 한다. 특히, 본 연구에서는 이와 같은 연구목적을 달성하기 위한 관점에서 연구설계, 즉 연구모형, 연구가설, 연구변수의 조작화, 연구의 기대효과 등의 내용을 제시하는데 초점을 둔다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.8
• /
• pp.313-320
• /
• 2019

This study compared and analyzed the levels of expectations of specialized hospitals, and the recognition of professional competency in specialized hospitals for the general public aged 20 years or older and those professionals on the hospital staffs who had more than three years of experience. The research period ran from July 2018 to May 2019. T-test and regression analysis were used for the analysis of the data. Research result; There was no difference in the level of expectations for the specialized hospitals between the general public and the hospital staffs. It was shown that the professional factor affecting subjective expectations of the specialized hospitals was a difference in the way of thinking between the general public and the hospital staff. The professional factor affecting the expected level of hospital use for the general public and hospital staffs was confidence in the doctors. However, the professional factors affecting the credibility of doctors differed between the general public and the hospital staff. The factor for the general public was excellent technical skill in the field, and the factor for the hospital staff was the specialized ability of doctor and their years of medical service. It is thought that efforts are needed to reduce the difference between the perception of hospital staff and that of the general public in order for specialized hospitals to continue to develop.