• Industrial Engineering and Management Systems
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• 제8권1호
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• pp.47-53
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• 2009

We define product line (or mix) selection problem as selecting a subset of potential product variants that can simultaneously minimize product proliferation and maintain market coverage. Selecting the most efficient product mix is a complex problem, which requires analyses of multiple criteria. This paper proposes a method based on Data Envelopment Analysis (DEA) for product line selection. Data Envelopment Analysis (DEA) is a linear programming based technique commonly used for measuring the relative performance of a group of decision making units with multiple inputs and outputs. Although DEA has been proved to be an effective evaluation tool in many fields, it has not been applied to solve the product line selection problem. In this study, we construct a five-step method that systematically adopts DEA to solve a product line selection problem. We then apply the proposed method to an existing line of staplers to provide quantitative evidence for managers to generate desirable decisions to maximize the company profits while also fulfilling market demands.

• 한국의류학회지
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• 제31권2호
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• pp.206-216
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• 2007

The purpose of this study was to investigate the differences in the cosmetic purchasing behavior influenced by make-up preference images, and the orders of importance in the cosmetic store selection. The questionnaires were given to female residents in the ages between $20{\sim}45$ in Seoul and Kyung-gi province. 322 questionnaires were used for data analysis. The collected data were analyzed by using SPSS 10.0 software with various techniques such as Frequency analysis, Factor analysis, Cronbach's ${\alpha}$ reliability analysis, Paired t-test, ANOVA test and Duncan test. The results of this study were as follows: 1. After investigating how the make-up preference image influences the selection of the off-line cosmetic store, it was found out that the personal service, shopping convenience, and product composition had significant differences. 2. After investigating how the make-up preference image influences the selection of the on-line cosmetic store, it was found out that only the product composition had significant difference. 3. After studying the factors that influence the off-line cosmetic store selection, it was found that the personal service was considered most important. After studying the factors that influence the on-line cosmetic store selection, it was found that the price was considered most important.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권7호
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• pp.2455-2475
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• 2021

Patient Navigation Program (PNP) is considered as an important implementation of health care systems that can assist in patient's treatment. Due to the feasibility of PNP implementation, a systematic reuse is needed for a wide adoption of PNP computerized system. SPL is one of the promising systematic reuse approaches for creating a reusable architecture to enabled reuse in several similar applications of PNP systems which has its own variations with other applications. However, stakeholder decision making which result from the imprecise, uncertain, and subjective nature of architecture selection based on quality attributes (QA) further hinders the development of the product line architecture. Therefore, this study aims to propose a quality-driven approach using Multi-Criteria Decision Analysis (MCDA) techniques for Software Product Line Architecture (SPLA) to have an objective selection based on the QA of stakeholders in the domain of PNP. There are two steps proposed to this approach. First, a clear representation of quality is proposed by extending feature model (FM) with QA feature to determine the QA in the early phase of architecture selection. Second, MCDA techniques were applied for architecture selection based on objective preference for certain QA in the domain of PNP. The result of the proposed approach is the implementation of the PNP system with SPLA that had been selected using MCDA techniques. Evaluation for the approach is done by checking the approach's applicability in a case study and stakeholder validation. Evaluation on ease of use and usefulness of the approach with selected stakeholders have shown positive responses. The evaluation results proved that the proposed approach assisted in the implementation of PNP systems.

• 한국의상디자인학회지
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• 제17권2호
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• pp.1-10
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• 2015

The purpose of the study was to analyze differences in importance of product selection criteria of retail buyers in Dongdaemum market according to price line of products, annual sales volume of the company, and work period as a retail buyer. The study defined a retail buyer as a buyer who buys apparel products in Dongdaemum market for their own stores. The questionnaire developed by the researchers was distributed to 200 retail buyers in Dongdaemun market. One hundred seventy two questionnaires were used in the final analysis. The data were analyzed by common factor analysis, ANOVA, and Tukey's test using SPSS 18.0/Windows. The results showed that product selection criteria were classified into 4 factors: fashion design, price, quality, and assortment. There were significant differences in importance of product selection criteria by retail buyers in Dongdaemum market according to price line of products and annual sales volume of the company, and work period as a retail buyer. The buyers of higher price products showed higher importance in all four factors of the product selection criteria. Also, the buyers of the company with lower annual sales volume considered price factors more important, but the buyers of the company with higher annual sales volume thought quality factor more important. Moreover, the buyer with work period of less than three years regarded price as a more important factor.

• 소프트웨어공학소사이어티 논문지
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• 제26권2호
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• pp.31-44
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• 2013

소프트웨어 제품라인공학은 재사용성에 초점을 맞추어 소프트웨어의 높은 품질과 생산성을 만족시킬 수 있는 방법으로 제안되었다. 소프트웨어 제품라인에서 제품 구성 방법은 휘처모델로부터 주어진 제품을 위해 가장 최선의 휘처와 휘처속성을 선택해 나가는 프로세스이다. 성공적인 제품 개발을 위해서는 제품의 목표를 달성할 수 있는 휘처와 휘처 속성을 선택하는 것이 중요하다. 하지만 수천개의 휘처와 휘처 속성이 존재하는 경우에는 최적의 제품 구성을 하는 것이 매우 어렵다. 그렇기에 본 연구에서는 휘처와 휘처 속성간의 관계를 기반으로 제품의 목표를 달성하게 하는 휘처와 휘처 속성의 구성 조합을 찾는 휘처 구성 방법을 제안하여, 보다 정확한 제품의 목표 달성에 기여하는 휘처 구성이 될 수 있도록 한다.

• Industrial Engineering and Management Systems
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• 제13권1호
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• pp.52-66
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• 2014

Promotion of a closed-loop supply chain requires disassembly systems that recycle end-of-life (EOL) assembled products. To operate the recycling disassembly system, parts selection is environmentally and economically carried out with non-destructive or destructive disassembly, and the recycling rate of the whole EOL product is determined. As the number of disassembled parts increases, the recycling rate basically increases. However, the labor cost also increases and brings lower profit, which is the difference between the recovered material prices and the disassembly costs. On the other hand, since the precedence relationships among disassembly tasks of the product also change with the parts selections, it is also required to optimize allocation of the tasks in designing a disassembly line. In addition, because information is required for such a design, the recycling rate, profit of each part and disassembly task times take precedence among the disassembly tasks. However, it is difficult to obtain that information in advance before collecting the actual EOL product. This study proposes and analyzes an optimal disassembly system design using integer programming with the environmental and economic parts selection (Igarashi et al., 2013), which harmonizes the recycling rate and profit using recyclability evaluation method (REM) developed by Hitachi, Ltd. The first stage involves optimization of environmental and economic parts selection with integer programming with ${\varepsilon}$ constraint, and the second stage involves optimization of the line balancing with integer programming in terms of minimizing the number of stations. The first and second stages are generally and mathematically formulized, and the relationships between them are analyzed in the cases of cell phones, computers and cleaners.

• 한국전자거래학회지
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• 제22권2호
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• pp.39-60
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• 2017

소프트웨어 제품라인 공학은 체계적인 소프트웨어 재사용을 위한 효과적인 방법으로 널리 인식되고 있으며, 기존 소프트웨어 개발 실무와 프로세스를 소프트웨어 제품라인으로 전환하기 위한 연구가 진행되어 오고 있다. 기존 소프트웨어 개발을 제품라인으로 전환하기 위해서는 수행조직, 적절한 프로세스 선택 및 수정, 도구의 지원 등 많은 투자가 요구된다. 특히 소규모 기업에서 소프트웨어 제품라인 공학 기술을 본격적으로 도입하기 앞서 적절한 비즈니스 사례와 소프트웨어 제품라인 공학의 적용에 대한 구체적인 실무가 필요하다. 본 논문에서는 웹 시스템 군의 개발에 소프트웨어 제품라인 공학을 적용하는데 따른 실질적인 사례와 소프트웨어 자산을 체계적으로 구축하고 재사용하는 과정을 제시하였다. 이를 위해, 다수의 웹 개발 프로젝트를 분석하였으며 소규모의 기업이 소프트웨어 제품라인을 채택하는데 따른 경험과 다양한 고려사항들을 제시하였다.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2002년도 춘계학술대회
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• pp.91-97
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• 2002

In this thesis presents line balancing problems of two-sided and mixed model assembly line widely used in practical fields using genetic algorithm for reducing throughput time, cost of tools and fixtures and improving flexibility of assembly lines. Two-sided and mixed model assembly line is a special type of production line where variety of product similar in product characteristics are assembled in both sides. This thesis proposes the genetic algorithm adequate to each step in tow-sided and mixed model assembly line with suitable presentation, individual, evaluation function, selection and genetic parameter. To confirm proposed genetic algorithm, we apply to increase the number of tasks in case study. And for evaluation the performance of proposed genetic algorithm, we compare to existing algorithm of one-sided and mixed model assembly line. The results show that the algorithm is outstanding in the problems with a larger number of stations or larger number of tasks.

• 대한안전경영과학회지
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• 제4권2호
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• pp.83-101
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• 2002

In this thesis presents line balancing problems of two-sided and mixed model assembly line widely used in practical fields using genetic algorithm for reducing throughput time, cost of tools and fixtures and improving flexibility of assembly lines. Two-sided and mixed model assembly line is a special type of production line where variety of product similar in product characteristics are assembled in both sides. This thesis proposes the genetic algorithm adequate to each step in tow-sided and mixed model assembly line with suitable presentation, individual, evaluation function, selection and genetic parameter. To confirm proposed genetic algorithm, we apply to increase the number of tasks in case study. And for evaluation the performance of proposed genetic algorithm, we compare to existing algorithm of one-sided and mixed model assembly line. The results show that the algorithm is outstanding in the problems with a larger number of stations or larger number of tasks.

• 소프트웨어공학소사이어티 논문지
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• 제24권3호
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• pp.77-89
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• 2011

소프트웨어 제품라인 공학은 제품라인의 공통적인 부분과 차이점을 핵심 자산으로 관리하여 품질을 높이고, 핵심 자산을 계획된 제품들에 재사용함으로써 소프트웨어의 생산성을 높이는데 효과적인 방법이다. 제품라인 아키텍처에는 제품에 따라서 포함되거나 포함되지 않는 가변적인 부분이 있기 때문에, 기존 단일 소프트웨어를 대상으로 한 아키텍처 모델과는 달리, 제품라인 아키텍처는 제품 간의 차이점인 가변성을 나타낼 수 있어야 한다. 기존에 여러 연구자가 제품라인 아키텍처 모델에 가변성을 표현하는 방법을 제안하였지만, 이들이 제시한 표현 방법들의 강약점을 분석하고 차이점을 비교하는 연구가 부족하였다. 따라서 본 논문에서는 현재까지 제안된 제품라인 아키텍처 모델에서의 가변성 표현 방법을 분석하고 비교하여, 적합한 표현 방법을 선택하는데 가이드가 되고자 한다.