• 한국입자에어로졸학회지
• /
• 제12권1호
• /
• pp.21-26
• /
• 2016

In order to realize In-line and convenient measurement for solid-gas two phase flows, Light Transmission Fluctuation (LTF) based on the random variation of transmitted light intensity, light scattering theory and cross-correlation method was presented for online measurement of particle size, concentration and velocity. The statistical relationship among transmitted light intensity, particle size and particle number in measurement zone was described by Beer-Lambert Law. Accordingly, the particle size and concentration were determined from the fluctuation signal of transmitted light intensity. Simultaneously, the particle velocity was calculated by cross-correlation analysis of two neighboring light beams. By considering the influence of concentration variation in industrial applications, the improved algorithm based on spectral analysis of transmitted light intensity was proposed to improve measurement accuracy and stability. Therefore, the online measurement system based on LTF was developed and applied to measure pulverized coal in power station and raw material in cement plant. The particle size, concentration and velocity of powder were monitored in real-time. It can provide important references for optimal control, energy saving and emission reduction of energy-intensive industries.

• 한국비블리아학회지
• /
• 제34권2호
• /
• pp.93-114
• /
• 2023

자기주도적 창의교육을 중시하는 교육 패러다임에 따라 학생들의 학습을 지원하는 주요한 공적 기관인 학교도서관과 공공도서관은 교과연계프로그램을 통한 자기주도적 학습 지원을 주요 업무로 강조하고 있다. 자기주도적 학습을 위해서는 학습자 중심의 교육 지식정보 제공이 필수적이며, 교과서에 반영된 교육과정을 심화·확장할 수 있는 교과서 연계 참고자료가 풍부하게 확보되어야 한다. 이 연구에서는 우선 초등학교 교과과정을 분석하여 도서관 자료를 적극적으로 활용하거나 확장하고자 하는 정보요구가 큰 주요 교과를 식별하고, 도서관 컬렉션 및 분류체계와 연계할 중점 매핑 포인트를 설정하였다. 각 교과의 학습주제 및 교과연계도서의 서지정보와 함께 한국십진분류법(KDC)의 분류표목 및 상관색인의 도입어를 참조하여 학습주제와 연관된 분류항목을 파악하였다. 이를 바탕으로, 학생들에게 친숙하지 않은 KDC 체계를 초등학교 주요 교과의 단원을 중심으로 재구성하여 학습자 중심의 교과서 연계 서지정보 및 주제정보를 구축하였다. 이를 통해 도서관은 교과과정의 학습주제를 중심으로 이용자별로 타겟화된 도서관 콘텐츠와 초등학교 교육콘텐츠를 연계함으로써 온라인 환경에서 초등학생의 자기주도적 창의학습 지원을 강화할 수 있다.

• 한국응급구조학회지
• /
• 제3권1호
• /
• pp.77-90
• /
• 1999

This study focuses on investigating and analyzing overall information use behavior of the health fields researchers. Questionaries were 116 researchers in there nursing university or college and EMT college. Four areas were tested on the basis of the purpose that there would exist unique characteristics in the information seeking behavior of health fields researchers. The findings of the study shows that health fields researchers prefer monographs and journals; they tend to use current materials; the first information source for their research activities is the cited references in the book or journal article; they are likely to delegate literature searching to the librarian, but they tend to conduct direct searching in online setting; in general, they react positively for the rapid change in information environment caused by recent development of information technology. It is emphasized that to design an efficient information system and provide an effective information service in the health science related library or information center, it is essential to consider the major characteristics and attributes of health fields researchers in terms of their information use behavior.

• Nutrition Research and Practice
• /
• 제6권6호
• /
• pp.551-558
• /
• 2012

The purpose of this research was to investigate how university students' nutrition beliefs influence their health behavioral intention. This study used an online survey engine (Qulatrics.com) to collect data from college students. Out of 253 questionnaires collected, 251 questionnaires (99.2%) were used for the statistical analysis. Confirmatory Factor Analysis (CFA) revealed that six dimensions, "Nutrition Confidence," "Susceptibility," "Severity," "Barrier," "Benefit," "Behavioral Intention to Eat Healthy Food," and "Behavioral Intention to do Physical Activity," had construct validity; Cronbach's alpha coefficient and composite reliabilities were tested for item reliability. The results validate that objective nutrition knowledge was a good predictor of college students' nutrition confidence. The results also clearly showed that two direct measures were significant predictors of behavioral intentions as hypothesized. Perceived benefit of eating healthy food and perceived barrier for eat healthy food to had significant effects on Behavioral Intentions and was a valid measurement to use to determine Behavioral Intentions. These findings can enhance the extant literature on the universal applicability of the model and serve as useful references for further investigations of the validity of the model within other health care or foodservice settings and for other health behavioral categories.

• 한국멀티미디어학회논문지
• /
• 제25권2호
• /
• pp.335-344
• /
• 2022

In recent years, Internet Word of Mouth (IWOM) as an important way for internet consumers to obtain product information, it has become a key factor influencing consumers purchase intention. However, does IWOM also affect consumers' willingness to buy in the E-commerce live broadcast environment? What online IWOM can make a difference? And how? This study establishes a theoretical model of the impact of IWOM on consumer purchase intention in Chinese E-commerce live broadcast. Questionnaire data were collected from 204 people through the internet, with the model and the hypotheses are tested by SPSS 21.0 software. The research results show that: Firstly, the influencing factors of IWOM in the E-commerce live broadcast are different from those in general E-commerce. Secondly, anchor traits, word of mouth quantity, and product involvement have a positive impact on consumers purchase intentions, but the strength of relationship, word of mouth quality and Word of mouth timeliness do not have significantly direct effect on consumers' purchase intentions. Finally, conclusion with theoretical references and practical suggestions for E-commerce live broadcast merchants that may enter the Chinese market.

• 한국환경복원기술학회지
• /
• 제23권2호
• /
• pp.1-16
• /
• 2020

The current status of geographical distribution range of Deutzia paniculata, one of the korean endemic plants, was investigated based on the species distribution information. The information of the geographical range used for analysis includes all the published references to the distribution of D. paniculata, herbarium specimens in Korea National Arboretum (KH) including its online database: http://www.nature.go.kr, and field research. Although, D. paniculata was firstly recorded in Wonsan, Hamgyeongnam-do, North Korea, this research revelaved that D. paniculata is mainly distributed in Gyeongsangbuk-do and Gyeongsangnam-do, southern regions of the Korean Peninsula. According to the distribution map, this species was estimated on distribution edge of in Anyang region of Gyeonggi-do, Mt. Naejang of Jeollabuk-do and Mt. Taebaek of Gwangwon-do on the distribution edge. However, it was made use of intensive field survey to identify the natural population of the species in these regions. D. paniculata habitat was mainly distributed between 290 meters and 491 meters in altitude, but it was also found ranged from 936 to 959 meters in Gun-wi, Gyeongsangbuk-do, South Korea. The distribution slope was 5° to 35° and the north, N, NE and NW in the aspect. The flora of vascular plants in D. paniculata habitats was listed in 137 taxa: 54 families, 103 genera, 120 species, 2 subspecies, 12 varieties and 3 forms while Korean endemic plants were found in three taxa, Stewartia koreana, Weigela subsessilis and D. Paniculata. Based on a collection of non-biological environment and biological environment data, D. paniculata population were discussed to make strategy and basic research methods for sustainable preservation.

• 한국콘텐츠학회논문지
• /
• 제20권7호
• /
• pp.417-428
• /
• 2020

4차산업혁명을 대표하는 핵심적인 기술로서 증강현실 서비스가 많은 이들로부터 관심을 끌고 있다. 이러한 시점에 본 연구는 네이버 <스노우> 서비스를 중심으로 증강현실 기반(AR) 카메라 애플리케이션 서비스 만족도에 영향을 미치는 요인들이 무엇인지를 살펴보고자 하였다. 이에 선행 연구들을 근거로 AR 카메라 애플리케이션 서비스 만족도 영향 가능 요인들을 도출하였고 이들 요인들이 AR 카메라 애플리케이션 서비스 만족도에 어떤 영향을 미치는 지를 또한 실증적으로 검증하였다. 자료는 네이버 <스노우>를 사용해 본 경험이 있는 312명을 대상으로 온라인 설문을 통해 수집되었으며, 수집된 응답들은 위계적 회귀 분석 방법으로 분석되었다. 분석 결과, 인구 통계학적인 요인으로서 성별, 인지된 상호작용성, 미적가치, 외재적 동기로서 유행동기 및 내재적 동기로서 즐거움이 증강현실 기반 카메라 애플리케이션 서비스 만족도에 유의미한 영향을 미치는 것으로 나타났다. 본 연구의 결과들은 증강 현실 서비스 관련 사업자들에게 보다 높은 이용자 만족을 이끌어 낼 수 있는 증강현실 서비스 개발을 위한 기초 자료로서 활용될 수 있다는 점에서 시사점을 지닌다.

• 한국컴퓨터정보학회논문지
• /
• 제24권12호
• /
• pp.93-100
• /
• 2019

유사도 계산은 메모리 기반 협력필터링 시스템의 성능에 매우 중요하다. 이 시스템들은 사용자 평가치들을 이용하여 온라인 상업 사이트에서 고객들에게 상품을 추천한다. 더욱 적합한 추천을 위해 현 사용자와 가장 유사한 사용자들을 선정하여 참조한다. 기존 문헌에는 많은 유사도 척도들이 개발되었는데, 이들은 대개 데이터 희소성이나 완전 시작 문제를 내포하고 있다. 본 논문에서는 기존 척도들과는 달리 사용자 평가치들로부터 선호 정보를 최대한 추출함으로써 희소한 데이터 조건에서도 더욱 신뢰할 수 있는 유사도값을 산출하고자 한다. 사용자 평가치 뿐만 아니라 데이터셋이 제공하는 영화장르 정보를 이용하는 새로운 유사도 척도를 제시한다. 본 척도와 기존의 관련된 척도들의 성능 실험을 하였고, 그 결과, 제안 척도는 주요 성능 평가기준 상으로 더욱 우수하거나 유사한 성능 결과를 보임을 확인하였다.

• 한국문헌정보학회지
• /
• 제30권4호
• /
• pp.13-38
• /
• 1996

본 연구는 사회과학분야에서 학술정보를 이용하는 연구자집단을 표본대상으로 하여 이들이 연구 및 학술활동에 필요한 정보를 추구하는데 있어서 어떠한 현실적 특성을 지니고 있으며, 그러한 특성들이 정보이용행태에 어떻게 나타나는지를 규명해 보고자 함에 그 목적을 두었다. 자료수집은 1995년 7월 약 2주간에 걸쳐 국내 주요 사회과학분야 정보서비스기관 세 곳을 이용하고 있는 임의의 사회과학연구자 150명을 표본으로 추출하여 질문지를 배포, 회수하였으며 연구자들의 정보이용행태 특성 규명을 위해서 다섯 가지의 작업가설을 도출, 검증하였다. 연구의 결과 사회과학연구자들은 도서(단행본)나 학술지를 선호하며, 비교적 최신자료에 많이 의존하는 편이다. 이들이 연구착수단계에서 가장 먼저 접하는 정보원은 도서나 학술지에 인용된 참고문헌이다. 문헌탐색은 사서에게 많이 의존하는 경향을 보이나 온라인 정보검색은 직접탐색하는 편이다. 이들은 또한 최근의 정보기술발전에 따른 급격한 정보환경변화에 대체로 긍정적인 반응을 보이고 있다. 결론적으로 사회과학정보제공을 위한 효율적 정보시스템 설계를 위해서나 이용자들에게의 보다 원활한 정보이용을 제고하기 위해서는 이용자들의 특성과 현실을 감안함이 필수적임이 강조되었다.

• 한국학교ㆍ지역보건교육학회지
• /
• 제16권1호
• /
• pp.93-105
• /
• 2015

Objectives: This study is for understanding the perceived job training of the public health promotion program officials and analysis the educational needs in order to serve as the basis for the development of the future educational programs. Methods: To this end, we have developed a survey based on references and consultations with experts. We had explained the purpose and the intent of the survey to nationwide public health directors in advance and an online questionnaire was conducted for health promotion program and service providing personnel; the results from a total of 763 survey respondents were used in the final analysis. Collected data were analyzed through SPSS Win 21.0. Results: The results shows that the tasks of public health promotion personnel are 'business practices,' 'planning and evaluation related work' and so on in order of importance while the duties of service providing personnel are 'counseling,' 'education' and so on. One of the factors affecting field applications of education is 'awareness of the connection between education and career development' which accounts for 33% of explanatory power; the selected six other factors constitute 41.7%. Necessary educational contents for public officials are 'public health service planning,' 'report writing skills' and 'project evaluation methods.' On the other hand, for service providers, the contents are 'counseling methods,' 'development of educational materials,' 'monitoring health status' and so on. Conclusions: In order for trained service personnel to accord with the changed health promotion environment and the demand of local residents, Public Health Promotion officials should increase educational opportunities based on the competencies for each job, provide continuous learning opportunities and information even after the training, and finally, create a system that can link to career development.