• 제목/요약/키워드: Time Preference

검색결과 1,388건 처리시간 0.025초

Multi-Criteria Decision Making Procedure under Incompletely Identified Preference Information

  • Ahn, Byeong-Seok;Kim, Jae-Kyeong;Kim, Soung-Hie
    • 한국경영과학회지
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    • 제23권3호
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    • pp.63-73
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    • 1998
  • The paper deals with interactive multiple criteria decision making procedure when decision maker (DM) specifies her or his preference in incomplete ways. Usually DM is willing or able to provide only incomplete information, because of time pressure and lack of knowledge or data. Under incomplete information on utility and attribute weight, the pairwise dominance checks result in strict or weak dominance values. Considering only strict dominance values sometimes fails to Prioritize alternatives because of fuzziness of preference information. Further there exists some information loss useful if used, otherwise. In this paper, we consider the outranking concept which implies the willingness of DM's taking some risk under the least favorable situation because she has enough reasons to admit the results. By comparing the magnitude of net preference degree of alternatives which is defined by difference between outrankings and outranked degree of each alternative, we can prioritize alternatives.

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가로변 고층집합주거단지 경관 특성에 관한 연구 (A Study on the Characteristic of the Landscape of Highrize Housing Complex at the street)

  • 김윤학;박향룡;이봉수;조용준
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2002년도 추계학술발표대회
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    • pp.223-228
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    • 2002
  • This study is a preference reversal about a policeman image and evaluation by roadside higher stories meeting dwelling pot to the center, and it is an examination, the thing that it analyzed by proposals. Preference anger Was high, and as for the results, the pot which I gave, and bronze was mixed, and formed the skyline with a change appeared with a height and a form of reveal a cross section in meeting dwelling pot star preference evaluation results cluster older brother contrariety. Also, it was arranged the parallel that older brother was parallel in the printing which was monotonous if I wore 1, and the pot that time a little shielding anger was high was evaluated because preference anger was low. Therefore, consideration about a the number of layers interval change must be in order a higher stories meeting dwelling pot reduces that I go for a closing of crossways in the future, and to be able to feel variety with a form enemy.

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공용환경 설계를 위한 선호도 기반 클러스터링 (Preference-based Clustering for Intelligent Shared Environments)

  • 손기혁;옥창수
    • 산업경영시스템학회지
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    • 제36권1호
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    • pp.64-69
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    • 2013
  • In ubiquitous computing, shared environments adjust themselves so that all users in the environments are satisfied as possible. Inevitably, some of users sacrifice their satisfactions while the shared environments maximize the sum of all users' satisfactions. In our previous work, we have proposed social welfare functions to avoid a situation which some users in the system face the worst setting of environments. In this work, we consider a more direct approach which is a preference based clustering to handle this issue. In this approach, first, we categorize all users into several subgroups in which users have similar tastes to environmental parameters based on their preference information. Second, we assign the subgroups into different time or space of the shared environments. Finally, each shared environments can be adjusted to maximize satisfactions of each subgroup and consequently the optimal of overall system can be achieved. We demonstrate the effectiveness of our approach with a numerical analysis.

현대 스트리트 패션 분석 및 선호도 연구 -강남권과.강북권의 비교 분석- (The Analysis and Preference of Contemporary Street Fashion -Comparative Analysis of Kangnam and Kangbuk-)

  • 이영재
    • 복식
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    • 제53권2호
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    • pp.87-100
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    • 2003
  • In this study, the modern street fashion of Kangnam and Kangbuk was qualitatively examined and comparatively analyzed through the field case study, and it is expected that the results of this study be importantly used in planning commodity of fashion brand. The photographs taken in the Kangnam and Kangbuk streets were classified as looks. which were comparatively analyzed each other. Also, a questionnaire was carried out in return for women in those streets, and data related with an age group, occupation, school, academic major, etc. for participant personality and with time purchasing clothing. average expenses for clothing per month. market and reasons for buying clothing, current fashion style, etc. for fashion preference trend were obtained. The streets around Kangnam subway station and KOEX mall for the Kangnam fashion style were selected for the sampling, and Sinchon and entrance of Ewha University for the Kangbuk, where college students and middle/high school students mostly gather. Results showed that an easy casual style was most popular in the Kangbuk area, and a romantic feminine style including a bobos style most popular in the Kangnam area. This case studied on the street fashion gaves the qualitative results about the fashion trend and fashion prediction information, and they could be compared with quantitative those known previously. Also, it could be a basis research on strengthening the competitive power in fashion commodity. However, this study was subjected to restriction in the sampling due to the short time and a few streets. This study will be extended into longer time and various streets including Apgujungdong in Kangnam and many colleges in Kangbuk.

적응형 사용자 프로파일기법과 검색 결과에 대한 실시간 필터링을 이용한 개인화 정보검색 시스템 (PIRS : Personalized Information Retrieval System using Adaptive User Profiling and Real-time Filtering for Search Results)

  • 전호철;최중민
    • 지능정보연구
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    • 제16권4호
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    • pp.21-41
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    • 2010
  • 본 논문은 다양한 사용자의 개인적 검색요구를 충족시키지 못하는 기존 검색시스템의 문제점을 해결하기 위해 사용자의 묵시적 피드백을 이용한 적응형 사용자 기호정보 기반의 개인화 검색을 실현하고, 검색결과에 대한 실시간 필터링을 통해 사용자에게 적합한 검색 결과를 제공하는 시스템을 제안한다. 기존의 검색 시스템들은 검색의도의 불확실성 때문에 사용자의 검색실패율이 높다. 검색 의도의 불확실성은 동일한 사용자가 "java"와 같은 다의어에 대해 동일한 질의어를 사용하더라도 다른 검색 결과를 원할 수 있다는 것이며, 단어의 수가 적을수록 불확실성은 가중될 것이다. 실시간 필터링은 사용자의 도메인 지정여부에 따라 주어진 도메인에 해당하는 웹문서들만 추출하거나, 적절한 도메인을 추론하고 해당하는 웹문서들만 검색 결과로 보여주는 것으로, 일반적인 디렉토리 검색과 유사하지만 모든 웹문서에 대해 이루어진다는 것과 실시간으로 분류된다는 것이 다르다. 실시간 필터링을 개인화에 활용함으로써 검색 결과의 수를 줄이고 검색만족도를 개선했다. 본 논문에서 생성한 기호정보파일은 계층적 구조로 이루어지며, 상황정보의 반영이 가능하기 때문에 의도의 불확실성을 해결 할 수 있다. 또한 사용자의 도메인별 웹문서 검색 동작을 효과적으로 추적(track) 할 수 있으며, 사용자의 기호 변화를 적절하게 알아낼 수 있다. 각 사용자 식별을 위해 IP address를 사용했으며, 기호정보파일은 사용자의 검색 행동에 대한 관찰을 기반으로 지속적으로 갱신된다. 또한 사용자의 검색결과에 대한 행동 관찰을 통해, 사용자 기호를 인지하고, 기호정보를 동적으로 반영했으며, 검색결과에 대한 만족도를 측정했다. 기호정보파일과 반영비율은 사용자가 검색을 수행할 때 시스템에 의해 생성되거나 갱신된다. 실험결과 적응형 사용자 기호정보파일과 실시간 필터링을 함께 사용함으로써, 상위 10개의 검색결과 중 평균 4.7개의 결과들에 대해 만족하는 것으로 나타났으며, 이는 구글의 결과에 비해 약 23.2% 향상된 만족도를 나타내었다.

Effects of Lifestyles, Dietary Habits, Food Preferences and Nutrient Intakes on Sensitivity to and Preference for Salty Tastes of Korean Women

  • Lee, Hong-Mie
    • Journal of Community Nutrition
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    • 제8권4호
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    • pp.185-192
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    • 2006
  • This study was performed to investigate factors affecting sensitivity and preference for salty tastes of Korean adult females. Sensitivity and preference for salty tastes were determined as detection threshold concentration of NaCl solution and the optimally-preferred NaCl concentration of the bean sprout soup, respectively. A self-administered questionnaire was used to obtain the information regarding general characteristics, self diagnosis of stress, health-related lifestyle practices, dietary habits and food preferences. Dietary intake using 24-hours recall and blood pressure were measured. Salty taste detection thresholds and optimally-preferred NaCl concentrations were 0.0197% and 0.357%, respectively. There was a significant positive correlation between the optimally-preferred salt concentration and age, despite no significant correlation between either sensitivity or preference for salty taste and sodium intake, which was 3,605mg/day. Those who had bread or cereal with milk as breakfast instead of a traditional Korean meal and those who preferred jjigae to soup had significantly higher NaCl preferences for bean sprout soup. Going to bed after midnight and skipping meals (${\geq}3/week$) decreased salty taste sensitivity without reaching statistical significance. Self awareness of one's own health, recent weight changes, family history of hypertension, sleep quality, getting-up time, rate of eating and other food preferences did not affect either perception. Stress level, TV watching, BMI and sodium intake did not have significant correlation to sensitivity or preference. Further research including a large number of well-controlled subjects and more accurate measurement of sodium intake should be directed to find other factors affecting salt preference and sensitivity in order to decrease Na intake and related diseases.

The Influence of Proportion Preference in Automotive Design: Comparison Between Japanese and German Automobiles

  • Jung, Joo Young
    • 감성과학
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    • 제21권1호
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    • pp.91-98
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    • 2018
  • The purpose of this study is to reveal concrete evidence on how aesthetic preference is applied in product design by countries. Since the 19th century, the proportion has been examined various times, and the conclusions consistently showed the strong preference for the golden ratio (1:1.618). However, previous studies are mainly focused on western products that were designed by western designers, so when the same experiment conducted for the first time in Asia with the question of 'Is the Asian subjects also likes the golden ratio?', the result clearly revealed that Korean subjects have a significant preference for the root ratio (1:1.414) and perfect square (1:1). It demonstrates that proportion preference might be different by countries, and it also influences on everyday products. Moreover, there is not enough evidence of Asian product proportions. For this reason, this study will strive to expand the knowledge on Asian aesthetic preference by focusing on Japanese automobiles that were designed and produced in Japan. 55 iconic Japanese automobiles were analyzed for proportion and compared with 50 iconic German automobiles. The result shows that Japanese automobiles have a shorter length of 7:10 (1:1.414) ratio than German automobiles with 13:23 (1:1.769) ratio. This result proves that there is the difference in preference for the proportion of Japan and Germany, and it has already influenced on automobile proportions. This result has a strong value that finding the most appropriate proportion of automotive design is a major issue in new product development, so this can be adapted to various fields of the design process where strong cultural value exists.

Inverse Effects of Information: The Influence of Personality Congruence on Preference for High Technology Products

  • Sohn, Yong Seok;Kim, Sung Eun
    • Asia Marketing Journal
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    • 제14권4호
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    • pp.167-188
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    • 2013
  • In today's society with its emphasis on unlimited information access, control of available information about high-technology products is often vital to their success. When a product is released, consumers may initially be attracted through information about its remarkable internal and external features. They may also perceive a degree of congruence between their own personalities and the product image as more information becomes available over time. Consumers' changing impressions of the product may influence personality congruence negatively or positively. These changes and their effects on preference for high-technology products are the focus of this paper. A survey was given to a sample of 206 students at K University to investigate the degree to which consumer behavior can be influenced by personality congruence. The need for clear and definite product knowledge in this process and the effect of product information on preference were also investigated. Three analyses were conducted. The results of Analysis 1 showed the influence of personality congruence on preference for high-technology products. Judgments about personality congruence were based on non-compensatory rather than compensatory information processing. The respondents considered certain aspects of a product's personality rather than the product as a whole when making preference decisions. The results of Analysis 2 indicated that when less information was available about a product, consumers who perceived high personality congruence with the product tended to have higher preference for it compared to those who perceived low personality congruence with the product. On the other hand, when consumers were given more information, no difference was observed in the impact of personality on preference between perceived high and low personality congruence. Lastly, the results of Analysis 3 showed that when consumers with high need for closure (NFC) perceived high congruence between their own personalities and a product, objective information regarding the product was not used in decision-making: instead, judgments about the product were based on perceived personality congruence. On the other hand, high-NFC consumers who perceived low personality congruence between themselves and the product tended to require more information about the product in order to give it a positive evaluation. In contrast, low-NFC consumers who perceived high personality congruence felt comfortable with large amounts of information. For low-NFC consumers who perceived low congruence, the level of information had no influence on preference.

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라이프스타일 집단별 혼례용 패션명품 소비자의 브랜드 선호도 및 구매행동 연구 (A Study on grand Preference and the Actual Condition by Wedding Fashion Masterpiece Consumer's Lifestyle Group)

  • 박옥련;류미애
    • 패션비즈니스
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    • 제12권5호
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    • pp.67-76
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    • 2008
  • The study surveyed preference and Actual Condition of wedding fashion masterpiece brand by consumer's lifestyle group. First, it was found that the brand preference by wedding fashion masterpiece consumer was Bulgari in precious metal, Burberry in scarf, Louisvuitton in bag and Chanel in cosmetics. Second, as a study result of purchase status, wedding fashion masterpiece brand consumers, who enjoy shopping about 1 time a month, usually purchased the masterpiece in masterpiece hall of department store. Their total purchase amount for wedding was less than 5 million in most cases. Third, regarding purchase-experience brand by consumer's lifestyle group, in clothes, there was significant difference between 4 groups such as shopping unconcerned type, reasonable economic type, self-focused brand-oriented type and social achievement type. In bag, slight difference appeared in 4 groups. Fourth, as a study result of the brand preference by consumer's lifestyle group, there was somewhat significant difference between precious metal, clothes, scarf, bag and cosmetic variables. Fifth, as a study result of the difference of information source use by consumer's lifestyle group, it was found that social achievement type used most various sources such as commerce, store and personnel information. Sixth, as a study result of shopping trend by consumer's lifestyle group, social achievement group searched for pleasure, unique personality and ostentation. Shopping unconcerned type searched for necessary shopping with comfortable style without sparing time in shopping.

국내 체류 외국인들의 출신지역에 따른 한식에 대한 인지도 및 선호도 연구 (A Study on Recognition and Preference of Korean Foods for Foreigners in Different Nationality)

  • 윤혜려
    • 한국식생활문화학회지
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    • 제20권3호
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    • pp.367-373
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    • 2005
  • The study investigated the recognition and preference of foreigner to Korean foods in different nationality. Questionnaires consisted of two languages- Chinese and English were given to 180 residing foreigners in Insa-dong and COEX mall areas and interview methods were used. A total of 157 questionnaires were analyzed for statistical analysis. The statistical analysis was completed using SPSS Win(ver 11.0) for descriptive analysis, ${\chi}^2-test$, ANOVA and Tukey's test. Main results of this study were as follows: First, the factors foreigners considered when they chose food of other countries were; 1.new taste, 2.curiosity, 3.foreign culture, 4.foreign tradition. People from European and Asian countries were inclined to 'New taste' first, while people from American and Oceanian countries were inclined to "curiosity". Second, most of respondents have tried Bulgogi and Galbi before and many of them also have tried Kimchi, Kimbop, and Bibimbop as common Korean foods. Third, the preference was different according to their origins. Asian people liked diverse cuisines including Bulgogi, Galbi, Kimchi, Dubu Doenjan chige, and Samgaetang, while European and Oceanian people liked Bulgogi, Galbi, and Bibimbop. The preference for Kimchi was considerably high among Asian people, however, low among American and Oceanian people(p<0.05). Fourth, Deviation was little on the taste, color, and table settings of Korean foods; most of the respondents was satisfied on those factors. European and Oceanian people who were familiar with table setting according to time were satisfied at table setting of Korean foods, which focused on space, rather than time. Fifth, most of the respondents, especially Asian people, remarked that Korean foods were spicy. The opinion on the taste of Korean foods was variable according to their nations. Currently many of culinary companies from Korea were leading their active business in foreign countries such as China and United States. Their domain was not limited to traditional Korean foods, but expanding to various fields such as fast foods, bakery goods, and fusion snacks.