화물차 적재 방식에 따른 축 하중을 고려한 타이어 먼지 중 PM10 발생량 평가기법 연구

이은정,이희관,Lee, Eunjeong,Lee, Heekwan 인천대학교 도시과학연구원 2022 도시과학 Vol.11 No.2

Recently, regulations on automobile exhaust gas emission are being strengthened. Accordingly, automobile exhaust gas emissions are expected to decrease and continue to decrease. On the other hand, many countries do not yet consider the emission of non-exhaust air pollutants from automobiles as important. Automobile non-exhaust substances are classified into three categories: tire dust emissions, brake wear emissions, and road scattering dust. In particular, in the case of tire dust, research results exist that pollutant emissions increase as the weight of a vehicle increases. Since the weight of trucks varies according to the load and the load along the axles is also different, it can be expected that the emission of PM10 from the tire dust will be different depending on the loading method. Therefore, this study was conducted on the amount of PM10 generated in tire dust considering the axle load of the truck according to the loading method. However, it was confirmed that the total amount of PM10 was less than that all loads are loaded in the front or rear when the load was evenly distributed in the front and rear of the cargo compartment. In particular, if the load is distributed evenly in the front and back of the cargo compartment and the load in the front part is divided into 2 to 6 and loaded, as the number of divided loading increases the amount of PM10 generated decreases. And when the load is divided into 6 pieces, the total amount of PM10 generated is 0.3952g, the minimum value. If the load is divided into 6 or more and loaded evenly, the total PM10 generated continuously increases and converges to about 0.3964g.

70kW급 이하 온수순환펌프의 임펠러 최적 설계를 위한 전산유체해석 연구

이은정(Eunjeong Lee),조현욱(Hyeonwook Jo),한민섭(Minsub Han) 한국유체기계학회 2017 한국유체기계학회 학술대회 논문집 Vol.2017 No.12

공공정보 유료화 정책 분석

이은정(Eunjeong Lee) 통계청 통계개발원 2000 통계연구 Vol.5 No.1

비정형 문서 데이터를 활용한 클러스터 기반 질의 시스템에 관한 연구

이은정(Eunjeong Lee),최형선(Hyeongseon Choi),김양중(Yangjung Kim) 한국통신학회 2024 한국통신학회 학술대회논문집 Vol.2024 No.6

인공신경망 기법을 이용한 미래 잠재증발산량 산정

이은정 ( Eunjeong Lee ),박정안 ( Jeongan Park ),최진영 ( Jinyoung Choi ),강문성 ( Moonseong Kang ),박승우 ( Seungwoo Park ) 한국농공학회 2009 한국농공학회 학술대회초록집 Vol.2009 No.-

Evapotranspiration (ET) is one of the basic component of the hydrologic cycle and is essential for estimating irrigation water requirements. In this study, artificial neural network (ANN) models for reference crop evapotranspiration (ET0) estimation were developed on a monthly basis (May~October). The models were trained and tested for Suwon, in Korea. Four climate factors, daily maximum temperature (T_max), minimum temperature (T_min), rainfall (R), and solar radiation (S) were used as the input parameters of the models. The target values of the models were calculated using Food and Agriculture Organization (FAO) Penman-Monteith equation. Future climate data were generated using LARS-WG (Long Ashton Research Station-Weather Generator), stochastic weather generator, based on HadCM3 A1B scenario. The evapotranspirations were 549.72 mm/yr in baseline period (1973~2008), 558.08 mm/yr in 2011-2030 (2020s), 593.03 mm/yr in 2046-2065 (2055s), and 641.07 mm/yr in 2080-2099 (2090s). The results showed that the ANN models achieved good performances in estimating future reference crop evapotranspiration.

Xtree와 문서 유사도에 기반한 XML 문서 검색

이은정(Eunjeong Lee),박우창(Uchang Park) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1A

인터넷의 성장으로 인해 준구조적인 문서 표준의 하나인 XML 문서의 사용이 증가하고 있다. 본 연구는 인터넷이나 XML 데이터베이스에서 저장된 스키마 정보가 주어지지 않는 많은 양의 XML 문서를 대상으로 주어진 XML 문서에 가장 가까운 문서들을 찾는 방법을 제시한다. 먼저 XML 문서들의 스키마 정보를 얻기위하여 XML 문서에 해당하는 카디널리티 정보를 포함하는 xtree로 변환하고, 변환된 문서들에 대하여 XML 각 요소에 대한 유사도와 문서 구조에 대한 유사도를 계산하여 가장 유사도가 가까운 XML 문서를 결과로 제시한다. 본 논문의 방법은 스키마가 알려지지 않는 XML의 문서들에 대한 검색을 할 수 있고 유사도를 이용하여 문서의 근사 검색을 할 수 있는 장점이 있다.

8체질의 두 체질 분류에 따른 선호색 - 금수체질(교감신경 항진), 목토체질(부교감신경 항진) 중심으로

이은정(Lee, EunJeong),이윤진(Lee, YounJin) 한국색채학회 2021 한국색채학회 논문집 Vol.35 No.4

Understanding the association between color preference and physiological aspects is crucial from the point of view of the mind. This study investigated the relationship between color preference and constitution. The results helped develop an understanding of the physiological, psychological, and emotional characteristics reflected by the preferred color. Eighty(42 males, 38 females) individuals with an average age of 35(SD=7.46) years participated. Descriptive statistical analysis was performed using PASW Statistics 18, and keyword frequency analysis was conducted using color expression. A focused literature review was undertaken to contextualize the results. It was found that yellow was preferred for the “Geumsu(Sympathicotonia)” type, and red was preferred for “Mokto(Vagotonia)”. These two groups showed a positive response to color stimulation in the direction of controlling their innate physiological conditions when their personality and psychological tendencies were expressed to the outside world. The results suggest that innate physiological characteristics are a determinant of color preference, and color preference is related to the need for color stimulation.

감각정보의 기억형성과정에 대한 교육신경학적 해석과 적용

이은정 ( Lee¸ Eunjeong ),조주연 ( Cho¸ Joo-yun ) 한국초등교육학회 2021 초등교육연구 Vol.34 No.3

Educational activities begin by inducing learners to produce meaningful sensory information. The performance of educational activities can also vary widely depending on long-term memories formed by such sensory information in the nervous systems of learners. In this sense, the memory formation processes of sensory information are closely related to how much the learner has achieved their educational activity goals. Educational activities can be viewed as intentional activities that bring about meaningful educational change to the nervous systems of learners. Therefore, importance needs to be placed on how memory formation processes of sensory information take place in the nervous systems of learners in the planning, preparation, progress, and verification of educational activities. Thus, this study attempted to make educational neurological interpretations and present examples of application based on a neuroscientific understanding of the memory formation processes of sensory information. Sensory information is generated through integrated aspects based on interactions between the parallel processing and hierarchical processing of our body's nervous systems through the excitement and inhibition of individual neurons regarding sensory stimuli. Also, the memory formation processes of sensory information generated this way are achieved through changes that continue to occur for long periods of time as aspects of mutual interaction among neuron groups and brain domains integrate based on changes that strengthen or weaken synaptic connection strength among neurons. Based on such neuroscientific understanding, this study categorizes the memory formation process types of sensory information into explicit memory formation processes and implicit memory formation processes that take place based on the activities of respectively different neural circuits and it conducted educational neurological interpretations by understanding memory formation principles of sensory information as principles of competition for efficient choices and principles of integration based on interaction. Also, it presents educational implications of educational neurological interpretations along with examples of application and proposed the need for new research on the expansion of educational research horizons.

인류학적 개발사업과 평가받지 못한 결실: 미얀마에서 진행된 국제개발 협력사업을 중심으로

이은정 ( Lee Eunjeong ) 한국문화인류학회 2017 한국문화인류학 Vol.50 No.3

An ‘anthropological development’ has been attempted in Korea led by anthropologists. The background is that the Korea International Cooperation Agency (KOICA) provided opportunities for universities to emerge as the new agents of international development cooperation. Anthropologists have argued for ‘advancement’ rather than ‘development’ and planned an ‘anthropological’ development cooperation project that fosters the development resources of villages based on local knowledge. Furthermore, the anthropologists who have interests in the field are providing more chances to the future professionals. The project was conducted through collaboration with a university in Myanmar and volunteers were sent based on anthropological knowledge and developmental experience. Volunteer activists surveyed local knowledge and heritage by forming rapport with local activists and villagers, and built the ‘local knowledge centre’ in a university and a village to accumulate local knowledge and support the activities for village members. Due to the project evaluation system, which emphasizes the project’s outcome more than the recipient’s motivation, the project had received a negative evaluation, and as a result the project was ended within the year. However, since the end of the project, interactions among local anthropdogists, volunteer activists and village residents have continued, and ‘unevaluated outcomes’ are continuing through relationships and use of centers. This paper provides a discussion of the meaning and results of anthropological development planning, progress, and evaluation carried out by KOICA and the project team, and describes the outcomes after the end of the project.

데이터 분석 교육이 일반계 고등학생의 융합적 사고력과 데이터 리터러시에 미치는 영향

이은정(EunJeong Lee),정종인(Jong-In Chung),김의정(Eui-Jeong Kim),강신천(Shin-Cheon Kang),김창석(Chang Suk Kim) 한국컴퓨터교육학회 2022 한국컴퓨터교육학회 학술발표대회논문집 Vol.26 No.1

4차 산업혁명과 팬데믹으로 불확실성이 확대되고 있는 사회에서 인공지능과 더불어 살아가기 위해 기계와 차별화된 인간 고유의 역할이 중요해졌다. 학교 교육에서는 학생이 빠르게 변화하는 환경에 유연하게 대응할 수 있도록 학습의 핵심 기반이 되는 기초 소양인 데이터 리터러시와 인간 고유의 창의·융합적 역량을 함양할 것을 강조하고 있다. 몇몇 학교에서 인공지능 관련 과목을 편성하여 운영하고 있지만, 구체적인 수업 사례와 효과성 검증 사례가 부족한 상황이다. 따라서 인공지능 교육의 사례를 제공함과 동시에 이것이 미래 교육 역량에 미치는 영향을 조사하고자 하였고, 인공지능 기초 교육과정에 근거하여 재구성한 데이터 분석 수업을 실시하여 이 수업이 학생의 융합적 사고력과 데이터 리터러시에 유의미한 영향을 주는 것을 확인하였다.