• 복식
• /
• 제50권5호
• /
• pp.77-90
• /
• 2000

The purpose of this study is to disclose the dimension of job characteristic, working place situation. and clothes selection, which are variable on clothes selection, to research the relation of job characteristic, working place situation, and clothes selection and to disclose the feature of consumers by each group in accordance with job characteristic. The follows are summary of this study result : The concept structure of job characteristic is composed by four types. Working place situation related with clothes selection are consisted of five types. Professional women selected clothes in accordance with nine feature. Job characteristic is related with working palace situation and influences on clothes selection. The persons influenced by activity state regarded personality as important when select clothes. The persons influenced by duty state regarded harmony and control as important, instead of, they ignored conformity. People select occupation according to individual feature, so the feature of consumers, working place environment, working place situation are different in accordance with job characteristic, as a result we can find differences in clothes selection suitable for working palace and purchasing.

• 한국산학기술학회논문지
• /
• 제12권12호
• /
• pp.5865-5872
• /
• 2011

무선 센서 네트워크의 클러스터링 시스템에서 클러스터 헤드가 기지국으로부터 멀리 떨어져있어 다중홉으로 통신하는 경우, 센싱된 데이터는 중간 클러스터 헤드를 통해 기지국으로 전송한다. 기지국에 가까이 있는 헤드 노드가 먼 노드보다 더 많은 패킷을 중계할 필요가 있기 때문에 핫 스팟 문제가 생긴다. 이런 문제로 기지국 가까이에 있는 클러스터 헤드는 에너지가 쉽게 고갈되고 이로 인해 네트워크의 수명을 단축시킨다. 본 논문에서는 궤적 클러스터링 기법을 이용한 클러스터 그룹 헤드 선정 기법을 제안한다. 제안하는 방법에서 클러스터 헤드 및 그룹 헤드의 선정은 궤적 클러스터링 기법 및 적합도 함수를 이용함으로써 에너지 효율을 높인다. 또한 핫 스팟 문제는 여러 계층을 클러스터 그룹으로 지정하고 그에 대한 적합도 함수를 이용하여 에너지 소모의 균형을 맞춤으로써 해결한다. 실험을 통해 이전의 클러스터링 기법보다 네트워크 에너지 효율성이 향상됨을 입증한다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제10권11호
• /
• pp.5229-5252
• /
• 2016

With proliferation of diverse network access technologies, users demands are also increasing and service providers are offering a Quality of Service (QoS) to satisfy their customers. In roaming, a mobile node (MN) traverses number of available networks in the heterogeneous wireless networks environment and a single operator is not capable to fulfill the demands of user. It is crucial task for MN for selecting a best network from the list of networks at any time anywhere. A MN undergoes a network selection situation frequently when it is becoming away from the home network. Multiple Attribute Group Decision (MAGD) method will be one of the best ways for selecting target network in heterogeneous wireless networks (4G). MAGD network selection process is predominantly dependent on two steps, i.e., attribute weight, decision maker's (DM's) weight and aggregation of opinion of DMs. This paper proposes Multi-Attribute Intuitionistic Fuzzy Group Decision Method (MAIFGDM) using TOPSIS for the selection of the suitable candidate network. It is scalable and is able to handle any number of networks with large set of attributes. This is a method of lower complexity and is useful for real time applications. It gives more accurate result because it uses Intuitionistic Fuzzy Sets (IFS) with an additional parameter intuitionistic fuzzy index or hesitant degree. MAIFGDM is simulated in MATLAB for its evaluation. A comparative study of MAIFDGM is also made with TOPSIS and Fuzzy-TOPSIS in respect to decision delay. It is observed that MAIFDGM have low values of decision time in comparison to TOPSIS and Fuzzy-TOPSIS methods.

• 응용통계연구
• /
• 제23권1호
• /
• pp.207-218
• /
• 2010

일반화가법모형은 기존 선형회귀모형의 문제점을 대부분 해결한 통계모형이지만 의미있는 독립변수의 수를 줄이는 방법이 적용되지 않을 경우 과대적합 문제가 발생할 수 있다. 그러므로 일반화가법모형에서 변수 축소방법을 적용하는 연구가 필요하다. 회귀분석에서 변수 축소방법으로 최근에는 Lasso 계열의 접근법이 연구되고 있다. 본 연구에서는 활용성이 높은 통계모형인 일반화가법모형에 Lasso 계열의 모형 중에서 Group Lasso와 Elastic net 모형을 적용하는 방법을 제시하고 이들의 해를 구하는 절차를 제안하였다. 그리고 제안된 방법을 모의실험과 실제자료인 회계년도 2005년 자동차보혐 자료에 적용을 통해 비교하여 보았다. 그 결과 본 논문에서 제안한 Group Lasso와 Elastic net을 이용하여 변수 축소를 통한 일반화가법모형이 기존의 방법보다 더 나은 결과를 제공하는 것으로 분석 되었다.

• 한국의류학회지
• /
• 제42권4호
• /
• pp.584-598
• /
• 2018

This study classified respondents by consumption value and analyzed differences in the purchase behavior of men's suits among consumption value groups. Frequency analysis, factor analysis, cluster analysis, and analysis of variance were conducted in order to analyze research problems. Factor analysis results showed that male consumption values included safety-oriented value, individuality-oriented value, others-oriented value, pleasure-oriented value, aesthetic-oriented value, low price-oriented value, community-oriented value, utility-oriented value, innovation-oriented value, and self-expression oriented value. The study divided respondents into personal satisfaction pursuit group, beauty & functionality pursuit group, individuality pursuit group, and others-oriented & low cost preference group according to consumption value. There were significant differences in selection criteria for men's suit (product image, physical properties of product, and brand name), selection reasons of brand (fashion & ostentation, individuality, and refinement), store attributes (store environment/salesperson service, reputation/additional service, and product assortment/shopping convenience).

• 한국환경교육학회지:환경교육
• /
• 제19권2호
• /
• pp.133-146
• /
• 2006

The purpose of this study was to examine how environmental education teachers think about environmental teaching materials of their use in primary and secondary schools. For this purpose, six primary and secondary school teachers were selected for focus group discussion on October 17th, 2005. The discussion of focus group was recorded both on video and audio tapes. Teachers' discussion could be analyzed in the perspectives of two big ideas, 'content selection' and 'content organization and presentation'. The big ideas were categorized into several areas: 1) The idea of 'content selection' was classified into 4 areas such as integration, difficulty level, locality, and timeliness, 2) The idea of 'content organization and presentation' was classified into 4 areas such as learning motivation, teaching and teaming strategy, evaluation method, application of teaching materials. This study provided meaningful ideas, which can be used in developing environmental education materials as well as effective teaching and teaming strategies for school environmental educators.

• 패션비즈니스
• /
• 제16권4호
• /
• pp.1-12
• /
• 2012

This study made an analysis on the relation and influence between outdoor wear benefit, clothing selection criteria and purchasing satisfaction. Survey was conducted targeting 20s-30s males and females who have experience of purchasing outdoor wear and 335 sheets of questionnaire were used for final analysis. And statistics package SPSS16.0 was used for analysis of collected materials. A group seeking the trendy brand turned out to give considerable thought to the brand and trend and purchase less than 100,000won at the discount outlet. A group pursuing functional practicality puts an emphasis on the activity and use, and purchases at the internet shopping mall or department store. Regarding material, function, design, style and color as important, a group pursuing individuality and appearance turned out to purchase clothing at various places such as discount outlet, specialty store and internet. A group that is indifferent to clothing appeared not to care about specific elements when selecting outdoor wear. The result of study showed that consumers of outdoor wear show purchasing satisfaction in respect of design, style, color or trend.

• 한국식품조리과학회지
• /
• 제27권2호
• /
• pp.83-94
• /
• 2011

The purpose of this study was to analyze the structural relationships among selection attributes, satisfaction, and loyalty of green tea consumers, including their moderating effect of involvement. Questionnaires were administered to residents of Seoul and Gyeonggi-do province, who were 20 years old and older and who had purchased green tea. A total of 700 questionnaires were distributed, and 658 were finally used in the analysis. SPSS 15.0 and LISREL 8.80 were used for the analysis. Selection attributes had a significant effect on satisfaction, and statistical significance was observed with regard to factors such as marketing, production, sensory evaluation, and brand. No significant direct effect was observed between selection attributes and loyalty. Additionally, satisfaction had a significant effect on loyalty. The marketing factor had a negative effect on satisfaction in both the low- and high-involvement groups. The brand factor had a positive effect on satisfaction in the low involvement group, suggesting that developing and promoting a popular brand is essential. Sensory and utility factors had a positive effect on satisfaction in the high involvement group.

• The Journal of Asian Finance, Economics and Business
• /
• 제6권1호
• /
• pp.187-194
• /
• 2019

This study examined that what attributes of student satisfaction are more important when students use university cafeterias. Factors that are considered to be more crucial when students use a cafeteria, such as menu, taste, price, and cleanliness, were tested. Based on the research of previous studies, it assumed that the selection attributes of students' cafeteria were menu, taste, price, and cleanliness. With 301 surveyed questionnaires, the study was carried out by AMOS 23.0 and the Structural Equation Model was used for examining the hypotheses as statistical method in this study. In consequence of the hypothesis test on the main effect, the factors such as the menu, taste, price and cleanliness were found to significantly affect satisfaction. Then, the moderating role of gender, age and allowance was analyzed. However, students' university cafeteria selection attributes differed depending on their allowance only. The path coefficients from menu to satisfaction were more significant in the group with a smaller allowance, while the path coefficient from price to satisfaction was more significant in the group with a larger allowance. The study analyzed that the effect of selection attribute of students' cafeteria on the satisfaction, and influence of students' allowance, and provide meaningful implications when they choose the attributes.

• International Journal of Advanced Culture Technology
• /
• 제11권4호
• /
• pp.263-272
• /
• 2023

We investigated and analyzed students' perceptions of their choice of science subjects in the high school credit system and the reasons for their choice. To achieve this, the selection of science subjects was investigated for the second year of S high school over the past three years. Students selected an average of 1.54 science subjects, and it was found that the rate of selection of science subjects was gradually increasing by year. Students chose high in the order of life science I, earth science I, chemistry I, physics I, etc. in the science subject group. Students who wish to enter the natural and engineering fields chose life science I, chemistry I, physics I, etc., while, students who wish to enter the humanities society chose society and culture, life science I, ethics and thought, etc. On the other hand, the reason for choosing science subjects was 'related to college admission', followed by 'aptitude and interest', 'career and real life help', etc. physics I, chemistry I, etc., were high in the subjects selected according to the 'related to college admission'. The subjects selected according to 'aptitude and interest' were high in life science I, earth science I, etc. Physics I, chemistry I, etc. are recognized as subjects necessary for college entrance, and life science I, earth science I, etc., are found to be related to their interests and aptitudes.