• Industrial Engineering and Management Systems
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• 제11권2호
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• pp.155-164
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• 2012

As the global market becomes more competitive, manufacturing industries face relentless pressure caused by a growing tendency of greater varieties of products, shorter manufacturing cycles and more sophisticated customer requirements. Efficient and effective supplier selection and order allocation decisions are, therefore, important decisions for a manufacturer to ensure stable material flows in a highly competitive supply chain, in particular, when customers are willing to accept products with less desirable product attributes (e.g., color, delivery date) for economic reasons. This paper attempts to solve optimally the challenging problem of supplier selection and order allocation, taking into consideration the customer flexibility for a manufacturer producing multi-products to satisfy the customers' demands in a multi period planning horizon. A new mixed integer programming model is developed to describe the behavior of the supply chain. The objective is to maximize the manufacturer's total profit subject to various operating constraints of the supply chain. Due to the complexity and non-deterministic polynomial-time (NP)-hard nature of the problem, an improved genetic approach is proposed to solve the problem optimally. This approach differs from a canonical genetic algorithm in three aspects: a new selection method to reduce the chance of premature convergence and two problem-specific repair heuristics to guarantee feasibility of the solutions. The results of applying the proposed approach to solve a set of randomly generated test problems clearly demonstrate its excellent performance. When compared with applying the canonical genetic algorithm to locate optimal solutions, the average improvement in the solution quality amounts to as high as ten percent.

• 한국식품영양학회지
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• 제29권5호
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• pp.643-654
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• 2016

The purpose of this study was to investigate the purchasing behavior and selection attributes for Home Meal Replacement (HMR) and to identify the selection attributes affecting purchasing frequency and purchasing costs of married women living in a city. Among 837 questionnaires distributed to HMR married women consumers, 752 complete questionnaires (89.8%) were analyzed. The younger married women group showed higher frequency of purchasing HMR than the older age group. The 20s and 30s age groups showed higher purchasing costs for HMR than the 40s and older age groups. A higher proportion of employed married women purchased HMR three or more times per week and spent an average of more than 20,000 won per purchase in comparison with unemployed married women. HMR selection attributes were classified into five factors: 'taste and sanitation', 'economic efficiency', 'health and nutrition', 'convenience', and 'reliability and awareness'; mean scores of these factors' importance levels were 4.28, 3.93, 3.59, 3.54, and 3.50 out of 5 points, respectively. The importance level of 'taste and sanitation' factor was significantly greater as married women's age decreased. However, the importance level of 'health and nutrition' factor was significantly greater as married women's age increased. The results of the logistic regression analyses indicate that the 'taste and sanitation' and 'health and nutrition' factors affected frequency of purchasing HMR. The 'reliability and awareness' factor had the most significant impact on cost per purchasing HMR. Therefore, a product differentiation strategy according to married women's age and employment status should be applied. Product qualities and brand value should be improved to enhance competition in the HMR market.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2010년도 춘계학술대회 초록집
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• pp.209.1-209.1
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• 2010

본 연구에서는 울산산업단지 및 인근 지자체에서 발생하는 가연성폐기물 중 화학산업의 원료로 공급하기 위하여 활용가능한 폐기물들을 선정하고, 선정된 폐기물들의 안정적인 수급을 위하여 자원순환네트워크를 구축하는 연구를 수행하였다. 활용가능한 폐기물을 선정하기 위하여 먼저 선정기준을 설정하고, 울산지역에서 발생하는 가연성폐기물의 발생 및 처리현황, 폐기물의 특성 등을 고려하여 활용가능량을 산출하였다. 또한 이들 폐기물을 지속적으로 수급하기 위하여 울산산업단지 기업과 지자체, 합성가스 이용 업체 등으로 구성된 컨소시움을 구축하는 방안을 제안하였다.

• 한국식생활문화학회지
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• 제35권5호
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• pp.407-416
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• 2020

Food tourism is recognized as a unique form of tourism product that combines traditions and regional characteristics and has become an international trend. However, research on food tourism in Korea is limited. Thus, this study investigated the selection attributes of food tourism in Italy, France and Japan. A qualitative study was conducted among 34 foreign food tourism experts on food tourism in their respective countries to find possible directions for Korean food tourism. As a result of this study, 'Food attraction', 'Traditionality', 'Locality', 'Convenience', 'Cultural Characteristics', and 'Appropriateness of price' were the attributes identified from the expert's comments. Marketing strategies such as improving quality of service and food itself, quality of service, developing diverse food tourism product, and building marketing channel will improve the status of food tourism in Korea.

• 품질경영학회지
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• 제4권1호
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• pp.13-19
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• 1976

In the quality planning phase, the techniques for measuring cost-quality trade-offs are used for the selection of the optimal design specifications when design flexibility permits significant trade-offs to be made. But the product quality is not only depends on the developing cost, but also the time for developing that product. Therefor it is important to seek a methodology for estimating time-cost-quality trade-offs associated with the quality planning projects. This paper is aimed to find a methodology of time-cost-quality trade-offs and to develop a proper algorithm.

• 한국군사과학기술학회지
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• 제16권1호
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• pp.65-73
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• 2013

FDB(Feature DataBase) attributes have been produced by using the resource data prior to the year 2002. Due to this reason, the attributes need to be updated to the up-to-date ones. In this regards, this study focuses on the way of finding areas whose attributes need to be updated. Forest and crop classes were chosen as target classes among FDB features. MODIS Landcover data and FDB are, first, compared to detect the changed forest and crop areas from 2001 to 2008. Then, vegetation vitality changes are analyzed using MODIS annual NDVI data. Based on the change detection and the vegetation vitality analysis, the index of area selection for updating FDB attributes is proposed in this study.

• Asia pacific journal of information systems
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• 제9권4호
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• pp.107-124
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• 1999

This paper describes a personalized advertisement technique as a part of intelligent customer services in Internet shopping malls. Based on customers' initial profile, purchase history, and behaviors in an Internet shopping mall, the technique displays appropriate advertisements on Internet web pages when customers' visit to the shopping mall. Customers preference scores for product groups which are main sources to select advertisements, are stored either a preference table or preference trees. Both of the two storage methods can support selection of advertisements on real time, and the preference tree method can reflect affinity among product groups. The suggested technique selects different advertisements to reflect changes of customers preferences as time goes by. An experiment has been performed to evaluate the effectiveness of the algorithm, which revealed that the algorithm selects more customer-oriented advertisements rather than random selection.

• International Journal of Advanced Culture Technology
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• 제8권4호
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• pp.212-219
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• 2020

We conducted this study to identify the accommodation applications users' lifestyle types and the composition factors for consumers' accommodation applications selection attributes and to identify the difference in the selection attributes perception of accommodation applications between groups classified by user's lifestyle types. According to the study, 6 factors were derived as the accommodation applications users' lifestyle types and were named social/leisure-oriented type, fashion-seeking type, culture-seeking type, self-examining type, self-centered type, family-oriented type. Also 6 factors were derived as the accommodation applications selection attributes and were named convenience, interactivity, economic efficiency, transaction reliability, product reliability and informativeness. Valid clusters were divided into four groups and were named culture/tourism group, self-examining group, passive and cautious group and Social and practicality-seeking group. Most of the selection attributes perception of accommodation applications between groups had statistically significant differences(p<.05), except for some items of transaction reliability. Based on the results of this study, we should strive to establish effective marketing strategies that reflect differences in the selection attributes perception of the accommodation application between groups classified by users' lifestyle types.

• 한국식생활문화학회지
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• 제38권6호
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• pp.402-414
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• 2023

This study evaluated the consumers' demands and points of improvement for restaurant meal replacement through importance-performance analysis by the restaurant meal replacement segment market using food involvement. The results were as follows. First, after segmenting the restaurant meal replacement market using food involvement, it was classified into three markets (multiple involvements, exploration-oriented, and product quality-oriented). Second, an analysis of the importance of restaurant meal replacement selection attributes revealed taste, sanitation, quality, freshness, price, saving time, texture, ingredients, preparation process, and quantity to be highly important. An analysis of the differences according to the market type revealed the multiple involvement type to be more important than other groups, considering the restaurant meal replacement selection attribute element. Third, an analysis of the importance-performance analysis of restaurant meal replacement selection attributes revealed that quantity and price as the selection attributes that needed to be improved first in all three markets. In addition, in the multiple involvement type, food additives appeared as a selection attribute requiring priority improvement, revealing the characteristics of a market that cares about diet and health.

• 복식
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• 제60권8호
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• pp.118-131
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• 2010

The purpose of this study was to identify the differences in cosmetics brand selection by product type, and the differences in ambivalent cosmetics consumption attitude by ambivalent clothing consumption attitude. The subjects of the study were females aged 20 plus, living in Seoul and Gyeonggi Province between January and February 2008, and 427 questionnaires were used for analysis. For data analysis SPSS 17.0 statistical program was used, and principal component analysis, paired t-test and t-test were conducted. The results and conclusions of this study are as follows: firstly, the differences in cosmetics brand selection by product type were investigated. The results showed that domestic high-priced brands of skincare products were selected most often, that foreign high-priced brands of base products and color products were selected most frequently, that domestic low-and medium-priced brands of hair products were selected most often, and that foreign low-and medium-priced brands of body products were selected most frequently. In particular, foreign high-priced brands of color products were most favored, followed by domestic low-and medium-priced brands. The subjects selected foreign high-priced brands, which are the most expensive, and domestic low-and medium-priced brands, which are the least expensive, at the same time. They displayed ambivalent consumption patterns. Secondly, the differences in cosmetics consumption attitude by ambivalent clothing consumption attitude were examined. Groups high on ambivalent clothing consumption attitude had a higher cosmetics consumption attitude than groups low on ambivalent clothing consumption attitude.