• 응용통계연구
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• 제25권6호
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• pp.987-997
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• 2012

The sales volume of men's cosmetics has drastically increased in Korea. In recent years, men's needs for cosmetics have been diversified and the consumer demand for functional cosmetics has greatly risen. In particular, male consumers have become more interested in essence product that is a light and concentrated treatment to correct skin problems. This research analyzes consumer preferences for essence-for-men through the use of choice-based conjoint analysis. This approach is adopted since the task of respondents to choose the most preferred option from several alternatives closely mimics actual marketplace purchasing behavior by consumers. New technique for the construction of choice sets is suggested based on the balanced incomplete block design, to accommodate a larger number of product profiles. The proposed design for choice sets is balanced and provides a tool to filter the contradictory choices. Conjoint analyses are performed to assess the relative importance of attributes and identify the most preferred profile of essence-for-men with respect to attributes such as emphasized function, price, type of content, and design of container. Some differences are indicated in the analysis results between age brackets as well as between groups classified by the amount of fashion item expenditures.

• 한국정보과학회논문지:소프트웨어및응용
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• 제33권3호
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• pp.356-364
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• 2006

차세대 정보통신 기술의 가장 중요한 패러다임으로 '유비쿼터스 컴퓨팅'이 새롭게 주목 받고있다. 유비쿼터스 컴퓨팅 서비스 시스템을 개발하기 위한 중요한 초점 중의 하나는 이동 객체(사용자)의 시간과 이벤트의 관계를 파악하고 이동 객체의 위치 데이타로부터 시공간 이동 패턴을 추론하는 것이다. 본 논문에서는 유비쿼터스 환경 내에서 사용자에게 시간과 관련된 서비스를 적절히 제공하기 위해서 다음과 같은 연구를 한다. 첫째, 서비스 관점에서의 시간적 추론(Temporal Reasoning)이다. 둘째, 사용자의 취향을 기록하기 위한 시간적 추론(Temporal Reasoning)이다. 각 사용자들은 각자의 취향을 가지고 있으며 이는 시간과 밀접한 관계를 가지고 있다. 시간과 관련된 사용자의 취향이 기록된 각 사용자 프로파일을 기반으로 서비스 지원 시스템은 적절한 서비스를 제공할 수 있다.

• 농업과학연구
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• 제39권2호
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• pp.291-297
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• 2012

Garlic is one of the most important seasoning vegetables in Korea. Basically, Korea has two trading systems for garlic at the wholesale market, and academic discussions about this trading system couldn't get the conclusion. The purpose of this paper is to review the marketing structure of garlic and to analyze the trading systems for garlic at the wholesale market through survey analysis. The results of studies present a few findings: First, marketers for garlic show different preferences about the trading systems of garlic at the wholesale market. Especially, the size of volume of trading garlic affects the preference of the trading system. Second, the trading systems have various problems, which are claimed by marketers. These problems need to be improved for the more efficient trading at the wholesale market. Third, the current trading systems for garlic at the wholesale market need to be continued, and they should freely selected by marketers.

• 한국수학교육학회지시리즈A:수학교육
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• 제32권1호
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• pp.75-90
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• 1993

의상결정 문제가 의사결정자의 취향에 좌우되는 볼확실한 상황에서 의사결정은 하나가 아닌 일련의 관련된 결정들로 구성된다. 규칙기준 전문가 시스템은 그와같은 의사결정 문제를 표현할 수 없다. 이 논문은 그와같은 문제들은 해결하기 위하여 모델기준 지식표현과 확률추론을 결합하여 자문시스템 IDPI를 제시하고 그와같은 방법을 사용하여 대학생들을 위한 진로자문 시스템을 구현한다.

• 한국실내디자인학회논문집
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• 제37호
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• pp.136-143
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• 2003

Users' demands on the space are changing in variety. These demands include reasonable space and form, harmonious composition with surroundings and esthetic satisfaction that could be brought by personal tastes and preferences. In addition, models that are introduced from designing process and from various forms tend to lack objective decision making standard. Accordingly it is difficult to find a clear alternative plan and process. In an effort to solve these problems, the objects of this study are; to propose an analysis model of image and space by using image process techniques that are on study in the field of artificial intelligence based on acquisition of digital image and to verify the application possibilities of such analysis model, 'Isovist' on quantitative analysis. The model can be applied with variable analysis model, as digital image process and other analysis model such as 'Isovist' It is possible that further study can complement problems from this study.

• 경영정보학연구
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• 제23권3호
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• pp.51-75
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• 2021

세계적인 전자상거래 기업들은 지속 가능한 경쟁력을 확보하기 위해 사용자 맞춤형 추천 서비스를 제공하고 있다. 기존 관련 연구에서는 주로 평점, 구매 여부 등 정량적 선호도 정보를 사용하여 개인화 추천 서비스를 제공하였다. 하지만 이와 같은 정량적 선호도 정보를 사용하여 개인화 추천 서비스를 제공하면 추천 성능이 저하될 수 있다는 문제점이 제기되고 있다. 호텔을 이용한 사용자가 호텔 서비스, 청결 상태 등에 대하여 만족하지 못한다고 리뷰를 작성하였으나 선호도 평점 5점을 부여했을 때 정량적 선호도(평점)와 정성적 선호도(리뷰)가 불일치한 문제가 발생할 수 있다. 따라서 본 연구에서는 정량적 선호도 정보와 정성적 선호도 정보가 일치하는지를 확인하고 이를 바탕으로 선호도 정보가 일치하는 사용자를 바탕으로 새로운 프로파일을 구축하여 개인화 추천 서비스를 제공하고자 한다. 리뷰에서 정성적 선호도를 추출하기 위해 자연어 처리 관련 연구에서 널리 사용되고 있는 CNN, LSTM, CNN + LSTM 등 딥러닝 기법을 사용하여 감성분석 모델을 구축하였다. 이를 통해 사용자가 작성한 리뷰에서 정성적 선호도 정보를 정교하게 추출하여 정량적 선호도 정보와 비교하였다. 본 연구에서 제안한 추천 방법론의 성능을 평가하기 위해 세계 최대 여행 플랫폼 TripAdvisor에서 실제 호텔을 이용한 사용자 선호도 정보를 수집하여 사용하였다. 실험 결과 본 연구에서 제안한 추천 방법론이 기존의 정량적 선호도만을 고려하는 추천 방법론보다 우수한 추천 성능을 나타냄을 확인할 수 있었다.

• 한국조경학회지
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• 제28권1호
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• pp.29-36
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• 2000

Leisure constraints mean the factor to constrain individual's leisure activity. Leisure constraints are composed of interpersonal constraints, interpersonal constraints and structural constraints. The purposes of this study are to show that intrapersonal leisure constraints have a strong effect on leisure preference, and leisure constraints are sequential and hierachical process. Intrapersonal constraints effect on leisure constraints in first step. And then interpersonal constraints and structural constraints effect on leisure participation. Those three leisure constraints are all linked together and come out step by step. Regarding adults as a population, who are more than 20-year-old and live in Seoul, 9 dongs were chose after dividing into upper and lower classes according to the value of their residence. The questionnaire consists of 4 parts: intrapersonal constraints, interpersonal constraints, structural constraints, and demographic characteristics. Results of this paper is that people who have strong intrapersonal constraints normally have problems caused from social structure. Intrapersonal constraints and structural constrains come out not seperately but together. Then, it can be said that structural constraints have an influence over intrapersonal constraints. So, it's necessary to solve structural problems to increase preferences and participations of them.

• Journal of Electrical Engineering and Technology
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• 제6권4호
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• pp.431-438
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• 2011

To ensure that equipment outages do not directly impact the reliability of the ISO-controlled grid, market participants request permission and receive approval for planned outages from the independent system operator (ISO) in competitive electricity markets. In the face of major generation outages, the ISO will make a critical decision as regards the scheduling of the essential maintenance for myriads of generating units over a fixed planning horizon in accordance with security and adequacy assessments. Mainly, we are concerned with a fundamental framework for ISO's maintenance coordination in order to determine precedence of conflicting outages. Simulated annealing, a powerful, general-purpose optimization methodology suitable for real combinatorial search problems, is used. Generally, the ISO will put forward its best effort to adjust individual generator maintenance schedules according to the time preferences of each power generator (GENCO) by taking advantage of several factors such as installed capacity and relative weightings assigned to the GENCOs. Thus, computer testing on a four-GENCO model is conducted to demonstrate the effectiveness of the proposed method and the applicability of the solution scheme to large-scale maintenance scheduling coordination problems.

• 한국식생활문화학회지
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• 제20권4호
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• pp.405-415
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• 2005

This study was to investigate firstly a way of promoting health through increasing kimchi ingestion by means of analyzing the points to be improved on the state of taking kimchi, the traditional Korean food, the degree of kimchi likings and the problems of the kimchi on the market, and secondly the other way of having our favorite age-old kimchi quality improved as well as making kimchi inherited by means of collecting useful related materials via questionnaire survey intended for 316 housewives of $20{\sim}50$ years old who lived in Seoul. In the degree of preferences, 92% of them liked kimchi, being considered that higher the age, higher the nostalgia with perception of traditional food. On the problems to be improved of the kimchi on the market, the most answers, 48.73%, said that the hygiene was worrying, indicating that the most overriding problem to be improved in the kimchi on the market was all-out sanitary management. On the thinking of kimchi, the feeling of that the kimchi was the most Korean-like was predominant.

• 가정과삶의질연구
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• 제24권3호
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• pp.95-115
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• 2006

The purpose of this study was to analyze the affecting factors on male salary workers' pre-retirement plans and pre-retirement planning programs. The focus was on male workers' pre-retirement plans and programs for economy, housing, family relationship, leisure and health care in their elderly life. The major findings were as follows: First, the salary workers estimated their level of economic and health problems among their elderly life as relatively high. Second, the major factors affecting the level of planning for post-retirement were salary workers' age, job satisfaction, and reserved savings for their elderly life. Third, the major affecting factors on participation in pre-retirement planning programs were age, educational attainment, and spouse's job status. From these findings, it can be concluded that salary workers' level of pre-retirement planning and the needs of pre-retirement planning programs differed from their personal characteristics and preferences. Also, salary workers' characteristics related to job and retirement had more important effects on their pre-retirement planning than economic status.