• 한국컴퓨터정보학회논문지
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• 제25권12호
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• pp.135-144
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• 2020

그래프 이론에서 최소비용 경로는 시작 노드와 도착 노드 사이의 최단 경로를 탐색하여 구한다. 최소비용은 두 노드 사이의 거리나 가격의 차이를 1차원 값으로 계산하며 연결된 노드 사이의 최소비용의 합을 구성하는 노드와 간선이 최단 경로다. 그러나 각 노드가 다중속성을 갖는 경우에는 경로에서 나타날 수 있는 비용의 종류 또한 속성의 개수만큼이므로 최단 경로를 판단하기에는 어려움이 있다. 본 논문에서는 사용자의 다양한 요구사항을 만족할 수 있도록 유클리드 거리를 사용하여 다중속성을 반영한 최단 경로 탐색 기법을 제안한다. 실험에서는 1차원 값에 대한 최단 경로와 2차원 속성에 대한 유클리드 거리를 이용한 최단 경로가 다르게 탐색 되었다. 다중 속성에서도 단일 속성과 차별화된 사용자의 선호 속성이 반영된 것으로 나타났다. 결과적으로 다중속성이 반영됨으로써 사용자의 다양한 요구사항을 만족시킬 수 있게 되었다.

• 한국지능시스템학회논문지
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• 제10권3호
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• pp.232-241
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• 2000

본 연구는 대량의 데이터에서 효율적으로 최적 규칙을 발견하기 위해 개념 계층과 정보 이득 및 라프셋 이론에 딕반한 통합 방법을 제시하고,이를 최적 규칙 발견 시스템으로 구현한다. 본 방법은 데이터베이스에 있는 데이터에서 일반화된 지식을 추출하기 위한 속성중심의 개념 상승 기법과 불필요한 속성 및 속성값을 제거하기 위한 지식 감축 기법을 적용하며, 최적 규칙의 도출을 위해 속성의 중요도를 사용한다. 본 시스템은 먼저, 속성값 개념의 일반화에 의해 종복 튜플을 제거함으로써 데이터 베이스의 크기를 줄이고, 결정속성에 뎡향을 주지않는 조건속성을 제거하여 간략화된 최적 규칙을 유도한다.그리고 실제 데이터에 적용하여 결정 규칙을 유도하고 그 규칙을 새로운 데이터에 테스트햐 봄으로써 새로운 데이터에도 잘 적용됨을 보인다.

• 인터넷정보학회논문지
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• 제17권5호
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• pp.25-32
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• 2016

There has been a rapid growth in the development of mobile application resulting from its wide usage for online transaction, data storage and exchange of information. However, an important issue that has been overlooked is the lack of emphasis on the security issues at the early stage of the development. In fact, security issues have been kept until the later stage of the implementation of mobile apps. Requirements engineers frequently ignore and incorrectly elicit security related requirements at the early stage of mobile application development. This scenario has led to the failure of developing secure and safe mobile application based on the needs of the users. As such, this paper intends to provide further understanding of the real challenges in extracting security attributes for mobile application faced by novice requirements engineers. For this purpose, two experiments on eliciting security attributes requirements of textual requirements scenario were conducted. The performance related to the correctness and time taken to elicit the security attributes were measured and recorded. It was found that the process of eliciting correct security attributes for mobile application requires effort, knowledge and skills. The findings indicate that an automated tool for correct elicitation security attributes requirement could help to overcome the challenges in eliciting security attributes requirements, especially among novice requirements engineers.

• 품질경영학회지
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• 제41권2호
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• pp.209-220
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• 2013

Purpose: This paper compares and discusses the influence on the quality classification of Kano's questionnaire which is used for the Kano model(Kano et al., 1984), the 3-point Likert-scale newly proposed by Kano and the 5-point Likert-scale presented in this study. Methods: For the comparison, the current study conducts a survey of 631 television viewers. The classification results of the three methods are then compared with those of direct classification which is adopted as a standard for classification of quality attributes. Results: The agreement rates between the results using conventional Kano's questionnaire and the results using direct classification is higher than the results using 3-point and 5-point Likert-scales. In addition, the attributes grouped as must-be or attractive in the direct classification appear to be classified as one-dimensional attributes in the Likert-scales. Conclusion: In comparison with the convensional Kano's questionnaire, the Likert-scale questions highly tend to classify the quatity attributes as one-dimensional. Although the classification results of the 3-point and 5-point Likert-scales are the same, the 5-point Likert-scale has the advantage to classify quality attributes in more detail.

• 유통과학연구
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• 제15권6호
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• pp.5-12
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• 2017

Purpose - This study is to investigate the effects of consumption values of retailers on the importance of store attributes, and to determine the influence on the consumption values of consumers who shop at complex shopping malls on the empirical and functional attributes in those malls as well as on the influence of on/off-line channels. Research design, data, and methodology - With 344 surveyed questionnaires, this study was conducted by using SPSS 22.0 to verify the reliability and validity of the measured variables. Structural equation model (SEM) was employed as a statistical method for the hypotheses test of this study. Results - The results showed that hedonic value has more influence on the importance of empirical attribute than that of functional attribute in shopping malls. In addition, practical value has more influence on functional attributes than empirical properties of shopping malls. However, these relationships showed the difference in on/off-line channels. As for off-line channels, consumers' consumption values were more influential on empirical attributes, while functional attributes were more important in on-line channels Conclusions - This study analyzed the influence on the importance of the consumption values in store attributes, and the effects of each channel with suggesting practical implications.

• 복식문화연구
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• 제19권1호
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• pp.163-175
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• 2011

The purposes of this study are to identify quality factors of knitwears, to find out important attributes of knitwears quality, and to find attributes of knitwears quality which improvement are required. College students in the Seoul district participated in the study, a convenience sampling method was used. A questionnaires was arranged with three separates subject sections, importance degree of knitwears quality, satisfaction degree of purchased knitwears, and demographic factors. Data from 280 questionnaires were used for the statistical analysis. For data analysis, factor analysis, paired-samples t-test and multiple response frequency were conducted. The results were as follows. Knitwears quality factors were classified into six subdivisions by factor analysis; physical functions, yarn and fabric properties, fit, symbol, aesthetic, and usefulness. Quality attributes in purchasing knitwears were considered importantly in order of design, textures, color, price, size, and shape stability, etc. Among quality attributes on knitwears, there were significant differences in importance degree and satisfaction degree; important degree was higher than satisfaction degree to six factors on knitwears quality. Especially, in graph according to gap analysis, physical function and symbol were included in IV area, attributes that attention, required of quality improvement. In contrast, yarn and fabric properties, fit, aesthetic, and usefulness were included in I area, strengths, maintained presently quality levels.

• 한국식생활문화학회지
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• 제19권1호
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• pp.1-11
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• 2004

The specific purposes of this study are that ; 1) to investigate the distinguished selection attributes on performance of Japanese chain restaurant according to general characteristics of the respondent ; 2) to find out relationships between selection attributes on performance for Japanese restaurant and customer's satisfaction Frequency analysis. one-way ANOVA, reliability analysis, factor analysis, multiple regression were used to analyze the data. Total 350 questionnaires were distributed and 312 were replied(89.14%). Selection attributes on performance for Japanese chain restaurant was divided into 7 factors. There are Factor1 'Store Image & Kindness', Factor2 'Sanitation & Taste', Factor3 'Approximation & Children's Menu', Factor4 'Delivery & Business Hours', Factor5 'Food Quantity & Korean Food', Factor6 'Service & Parking' Factor7 'Price & Publicity'. Monthly income, eating-out expense per once and type of companion have significant influences on selection attributes for performance. Customer's total satisfaction is significantly affected by selection attributes on performance. Factor7 'Price & Publicity' has the most significant influence on customer's satisfaction. We expect that the results can be used to provide basic information to plan marketing strategies, and take improved customer's satisfaction for Japanese chain restaurants.

• 대한수학교육학회지:수학교육학연구
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• 제19권4호
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• pp.531-543
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• 2009

본 연구는 중학교 2학년 기하 문제를 해결하는 데 필요한 속성이 무엇인지를 확인하고, 학생들이 그러한 속성을 얼마나 숙달하고 있는지를 분석하였다. 중학교 2학년 기하 영역의 선다형 문항은 회상하기, 분석하기, 정당화하기, 종합하기, 비정형 문제해결의 5가지 속성을 요구하고 있었으며, 이것은 수학 교사들의 내용적 판단뿐 아니라 인지진단이론의 모수에 의해서도 확인되었다. 학생들은 정당화하기와 종합하기의 속성을 많이 숙달하지 못한 편으로 나타났다. 5가지 속성은 서로 높은 상관관계가 있었으며, 회귀분석 결과 분석하기가 기하 성취도 변화를 가장 잘 예측하는 변수였다. 성취수준별로 숙달한 속성의 수는 달랐는데, 중 수준 학생들은 상 수준과 비교하여 정당화하기, 비정형 문제해결의 숙달 비율이 낮았으며, 하 수준 학생들은 종합하기나 정당화하기의 속성을 거의 숙달하지 못했고 회상하기, 분석하기, 비정형 문제해결의 속성 또한 30% 미만의 학생들이 숙달하고 있었다. 이 결과는 개인에 따라 다른 정보를 제공하고 학생 개개인의 강점과 약점을 산출해준다는 점에서 학생 평가에 유용하게 활용될 수 있다.

• 식품보건융합연구
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• 제7권4호
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• pp.1-11
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• 2021

The purpose of this study is to investigate the ramen selection attributes of consumers. This research assigned taste, price, quantity, design, and brand as selection attributes, all of which have already been verified by previous studies as selection attributes when purchasing processed foods. A total of 500 questionnaires were issued, and the survey results were analysed to ensure validity and reliability. A Structural Equation Model was used to test the hypotheses of the study. Based on the analysis, taste, price, quantity, design, and brand had a statistically significant effect on satisfaction. Furthermore, satisfaction had a statistically significant effect on repurchase intention. Among the selection attributes (taste, price, quantity, design, and brand), only price had a statistically significant effect on repurchase intention. However, the influence of the selection attributes on satisfaction varied depending on the consumer's consumption value. In order to analyse the moderating effect of consumption value, the respondent group was divided into a hedonism group and pragmatism group, and analysed. It empirically proved that the hedonistic value-oriented group valued taste, and the practical value-oriented group valued price the most. This study empirically verified the relationship between ramen selection attributes and consumption value, and provided corresponding theoretical and practical implications.

• 한국생활과학회지
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• 제21권6호
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• pp.1185-1198
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• 2012

The purposes of this study were to investigate the relationships between e-loyalty formation process and satisfaction for apparel products by testing the research model developing upon prior researches, and to analyze the differences of the structural model between two groups (high satisfaction group and low satisfaction group). A total of 356 respondents participated through a convenience sampling at universities in Busan. Data were analyzed by a structural equation model analysis. The results were as followings: First, for the structural model, the attributes of shopping malls (e.g., e-store attributes and product attributes) affected consumer satisfaction which influenced the e-loyalty of shopping malls, mediated by value perception. Second, high-satisfaction group evaluated more importantly the attributes of shopping malls, higher perceived the value of products and web sites, more satisfied the mall, and had greater loyalty of online shopping malls than low-satisfaction group. Third, there were significant differences between high-satisfaction group and low-satisfaction group in the e-loyalty model for apparels. Specifically, for high-satisfaction group, the e-store attributes were more likely to influence the value perception of products and web sites than low-satisfaction group, while low-satisfaction group was the higher perceived the value of products, the more they satisfied and then the greater e-loyalty respectively. According to the findings, the implications and future suggestions related to e-loyalty of shopping malls for apparels are provided.