퍼지 연관규칙을 이용한 뉴스레터 시스템 설계 및 구현

정연홍 ( Youn-hong Jung ),박우수 ( Woo-su Park ),박규석 ( Kyoo-seok Park ) 한국인터넷정보학회 2002 인터넷정보학회논문지 Vol.3 No.5

Web mining can be broadly defined as the discovery and analysis of useful information from the World Wide Web. In this paper, we tried to analyze a user access pattern and designed a system which can supply useful information to users through the web mining. The proposed system can search the information of users pattern through the web site and news letters, and pass through classification of category through filtering. The fuzzy association rules are applied to the users who access recently, to each category that generated through these processes, and compares the generated sets to each uers-access pages set, and it can send appropriate news letter to each user.

주차관제용 기계화 설비의 SMS 기반 원격관리 시스템의 설계 및 구현

정연홍(Youn-Hong Jung),김성(Sung Kim),박규석(Kyoo-seok Park) 한국멀티미디어학회 2001 한국멀티미디어학회 학술발표논문집 Vol.2001 No.2

과학고 자기주도학습전형 쟁점 연구

정연홍 ( Youn Hong Jung ),최호성 ( Ho Seong Choe ) 한국과학교육학회 2015 한국과학교육학회지 Vol.35 No.3

This study is to discover the diverse issues related to Self-Directed Learning Screening (SDLS) and draw implications by analyzing its critical points. Using content analysis and interviews with admission officers, tentative issues were finalized and reviewed by researchers and educators. A Survey was developed based on the 96 issues after having evidence of content validity using the Delphi method. To conduct survey, e-mails were sent to admissions officers in twenty science specialized high schools. They were asked to response to questions about perceptions of critical issues and if there are any issues in their schools. Using mean scores of two factors based on its critical issues and frequencies, a two-dimensional classification table for each type was presented. Four critical issues for each type were discovered. The first type indicates minor issues that include 28 items that were less than the overall mean scores in terms of critical issues and its frequencies. The second type indicates tentative issues that include 29 items that were greater than the mean score in critical issues but less in its frequencies. The third type indicates general issues that include 17 items that were less than the mean score in critical issues but greater in its frequencies. The last type indicates critical issues that include 22 items that were greater than the mean scores in two factors. The discovered results of critical issues and its types in this study can be considered a core part of the screening process in schools, especially, critical issues should play an important role in the process of admission screening planning.

호텔레스토랑 서비스 생산관리에 관한 개념적 연구 : 서비스 인카운터 및 공정설계를 중심으로

정연홍(Jung Youn-Hong) 한국문화관광학회 2003 문화관광연구 Vol.5 No.1

In this study, based on the premises that improved and more successful hotel restaurant management would be possible if the field of service production management is to be added to existing strategic and marketing viewpoint, following factors are presented: First, Service mapping and service flow chart, as the core conceptions for design of service process, are closely analyzed, and essential conception is introduced at every stage of the study. Second, things that should be done and those must not be done encountered in the course of service behaviors are presented and it is advised to train the employees repeatedly based on it. Third, emphasis is placed on the conceptions of service failure, service recovery, service switching behavior etc., so that cessation of customers may be minimized. Lastly it is advised to exert efforts to subdivide hotel restaurant activities so that only the advantages of encounter and relationship in that field may be highlighted. In addition, it is emphasized that the introduction of employee empowerment is essential in order to enhance the swift response in the service encounter.

리모델링한 아파트 단위주거의 빛환경 요소 실태와 조도평가

정연홍(Jeong Youn-Hong),최윤정(Choi Yoon-Jung) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.8

The purposes of this study are to evaluate of the illumination and to find out the present condition of lighting elements of each space in recently remodeled apartment units. Field survey consisted of interview, observation and measurement have been conducted for 20 occupied apartment units after remodeling. As results, the present ratio of the balcony integration into children room is 40.0%. The ratios of artificial lighting fixture replacement each space are 47.3~100.0%. Most type of replaced lightings are the same position and the more brighter than the one before remodeling. The down light or assistant ceiling light which were additionally installed were not usually used in most houses. To sum up the result of artificial illumination measurement, in all the space of most houses shows that the artificial lighting illumination exceeds the maximum level of the general illumination standard for relaxation. As a result of illumination measurement on working area, as for most of areas, the illumination does not meet the standard. As for the uniformity ratio of daylight illumination, it appears that 30.0% do not meet the standard only in the living room. As for the uniformity ratio of artificial illumination, it appears that 65.0% do not meet the standard in the living room; 20.0% in the corridor; 35.0% in the kitchen; 14.3% in the study room. The results of t-test on difference of illumination by balcony integration are as follows. There is a significant differences in daylight illumination of the children rooms integrated with balcony. Also, there are significant difference of the uniformity ratio of living room's daylight illumination and that of living room's artificial illumination. The results of t-test difference on artificial illumination by lighting fixture replacement are as follows. There are significant differences in artificial illumination in the living room, the kitchen, the master room, the children room and the bathroom by lighting fixture replacement. Also, there is a significant difference in the uniformity ratio of kitchen's artificial illumination installed by lighting fixture replacement.

아파트의 겨울철 실내온열환경 실태와 생활요인 분석

최윤정,정연홍,Choi, Yoon-Jung,Jeong, Youn-Hong 한국주거학회 2008 한국주거학회 논문집 Vol.19 No.4

The purposes of this study were to determine the actual state of the indoor thermal environment in apartment units and to analyze the relationship between the living factors and indoor thermal elements. The field surveys consisted of measurements of physical elements and observations of living factors. In addition, the residents of 20 apartment units were interviewed to survey their subjective response. Field surveys were carried out from January to March 2007. Measuring elements were air temperature, globe temperature, and relative humidity. The results showed that the average of indoor temperature for the houses was $21.2{\sim}27.2^{\circ}C$, while 4 houses exceeded the comfort zone. The average of globe temperature for the houses was $21.3{\sim}27.5^{\circ}C$, while 6 houses exceeded the comfort zone. The mean relative humidity was $19.5{\sim}58.8%$, which is a relatively dry condition. The residents' average clothing value was $0.39{\sim}0.89$ clo(average 0.68 clo). The average thermal sensation vote on each room was $4.2{\sim}4.8$, which is 'neutral' to 'slightly warm'. Living factors had significant effect on indoor temperature in regression analysis were ventilation time(outdoor air exchange), opening time of door through balcony, and gas cooker use time.

웹페이지 관심도 분석에 관한 연구

김창근,정연홍,김일,Kim, Chang-Geun,Jung, Youn-Hong,Kim, Il 한국정보통신학회 2007 한국정보통신학회논문지 Vol.11 No.4

최근 인터넷 쇼핑몰 등을 통한 전자상거래가 증가하면서 웹페이지를 탐색하는 방문자의 관심도를 분석하여 개인화 등에 활용되는 예가 증가하고 있다. 웹사이트 방문자의 관심도 분석 방법으로는 클릭스트림 기반의 분석 방법이 이용되고 있지만, 이러한 기법은 인터넷 쇼핑 몰과 같이 많은 양의 정보를 제공하는 웹페이지의 경우에는 방문자가 어떠한 정보에 관심이 많은지에 대한분석이 어렵다. 웹페이지와 같이 많은 양의 정보를 제공하는 경우에 제한된 크기의 모니터로는 한 화면에 모든 정보를 표현하기가 어렵다. 따라서 웹페이지를 표현하는 웹브라우저는 이러한 표현의 한계를 극복하기 위하여 페이지 스크롤 기능을 제공하고 있다. 본 논문에서는 이러한 문제를 해결하기 위하여 웹브라우저 내에서 스크롤바 위치와 윈도우 커서의 움직임을 주기적으로 수집하여 사용자의 관심도를 분석하는 웹페이지 관심도 분석 시스템을 제안하고 분석 및 설계하였다. There has been increasing of using Internet shopping mall like an e-business, and it means that the analysis technique of appetence for webpase visitors logging into the case of analyzing the degree of concern and using them in the personalization has been absolutely advanced. For heavy web pages, it is impossible to use click-stream based analysis in analyzing interest for each area by what kind of information the visitors are interested in to. A web browser of a limited size has difficulty in expressing on a screen information about what they want, or what hey are looking for. Pagescrolling is used to overcome such a limitation in expression. In this study, a analyzing system of degree of concern for Webpage is presented, designed and implemented using page scrolling to track the position of the scroll bar and movements of the window cursor regularly within a window browser for real-time transfer to analyze user's interest by using information received from the analysis of the visual perception area of the web page.

학교교실의 냉방시 실내열.공기환경 실태

최윤정,정연홍,이선아,김혜경,황진아,Choi, Yoon-Jung,Jeong, Youn-Hong,Lee, Seon-A,Kim, Hye-Kyeong,Hwang, Jin-A 한국주거학회 2007 한국주거학회 논문집 Vol.18 No.4

The purpose of this study were to make clear the present condition of indoor thermal and air environment by cooling in school classrooms and to analyze the relation of the living conditions with indoor environment. The measurements on physical elements and observations on living conditions were carried out in 6 classrooms of 3 middle or high schools. Measuring elements were indoor temperature, relative humidity, PM10 and $CO_2$ concentration. As results, the averages of indoor temperature each classrooms were $24.9{\sim}26.6^{\circ}C$. Most of classrooms were lower than the Maintenance standard $(26{\sim}28^{\circ}C)$ of School Health Law. The means of relative humidity were $51.3{\sim}72%$, all classrooms were ranged within the standard $(30{\sim}80%)$. The means of PM10 concentration were $3.5{\sim}23.1{\mu}g/m^3$, all classrooms were kept within the standard $(100{\mu}g/m^3)$. The means of $CO_2$ concentration were $1218.7{\sim}4705.4ppm$, all classrooms were exceed the standard (1,000ppm). The results of analysis on relations of living conditions with the physical elements are as follow; the air conditioner set of temperature, windows and doors opening elapsed time, the number of students in classrooms and activities of students had certain effect on indoor environment.

아파트 단위주거의 리모델링 요소와 현황 - 인테리어디자인업체 실무자와 거주자 심층면접을 통하여 -

최윤정,심현숙,정연홍,Choi, Yoon-Jung,Shim, Hyun-Suk,Jeong, Youn-Hong 한국주거학회 2007 한국주거학회 논문집 Vol.18 No.6

The purpose of this study was to grasp major elements and actual condition of apartment unit remodeling by in-depth interviews on residents and specialists. The interviews had been conducted to interior designers who have a wide experience of apartment remodeling and residents who live in recently remodeled apartment unit. In-depth interview is a kind of qualitative method in which attention to reply of responses with open-access between interviewer and respondents. According to the results, remodeling elements were generally changing of lighting fixtures and finishing materials in the all spaces, integration of balcony into children's room, installation of furniture in kitchen and entrance, changing storage furnitures and equipments in bathroom. Artificial lighting method were selected generally whole lighting. Finishing materials were used ordinary (non environmentally-friendly) wallpaper and adhesion and tempered floor. There were unsatisfied factors after remodeling, these were dissatisfaction of design, construction defects, and stink of reflecting 'sick house'. Also they responded that they should be considering to use environmentally-friendly material at next remodeling.

대학원 연구실의 겨울철 실내환경 실태

최윤정(Yoon Jung Choi), 심현숙(Hyun Suk Shim), 정연홍(Youn Hong Jeong), 이강배(Kang Bae Lee) 충북대학교 생활과학연구소 2007 생활과학연구논총 Vol.11 No.1

  The purpose of this study was to grasp the present condition of indoor environment in graduate school laboratory during winter. Method was field survey with measurement on indoor environmental factor and observation on influencing factor. Field surveys were carried out in 4 graduate school laboratories from 2nd to 8th of December 2006. Measuring elements were indoor temperature, relative humidity, PM10, CO₂, equivalent noise level, and illumination. As results, the averages of indoor temperature in each laboratory were 22.2~27.3℃. Most of laboratories were higher than the Maintenance standard(18~20℃) of School Health Law. The means of relative humidity were 22.9~35.6%, all laboratories were lower than the standard(30~80%). The means of PM10 concentration were 0.0~35.5 ㎍/㎥, all laboratories were kept within the standard(100 ㎍/㎥). The means of CO₂ concentration were 756.3~1477.9 ppm. A laboratory was exceeded the standard(1,000ppm) and 3 laboratories were kept within the standard. The means of equivalent noise level were 48.8~54.5 dB(A)Leq5min, all laboratories were kept within the standard(55㏈(A)Leq5min). The means of merged illumination by daylighting and artificial lighting were 344~525 lux (11:00 a.m.) and 269~464 lux (3:00 p.m.), all laboratories were available to compare standard(300 lux). The means of illumination by artificial lighting were 236~400 lux (8:00 p.m.), 2 subject laboratories were lower than the standard(300 lux).