• Journal of Korean Society for Quality Management
• /
• v.37 no.2
• /
• pp.32-45
• /
• 2009

The importance of quality logistics service has kept growing in fierce competitions. Accordingly, many have tried to assess the logistics service quality and attempted to propose the strategic ways to manage it. However, it has been known that service quality is a multi-dimensional construct and not all quality attributed are viewed as equally important to customers. In other words, each quality attribute has different implications for customer satisfaction. To this respect, the current study attempted to identify the satisfying/dissatisfying quality factor through the Kana approach. In so doing, several satisfying and dissatisfying quality factors in logistics service quality were identified. Further, several academic and practical implications for logistics service quality were proposed.

• Journal of Korean Society for Quality Management
• /
• v.41 no.2
• /
• pp.233-248
• /
• 2013

Purpose: This study develops heuristic process capability indices (PCIs) using distribution-decomposition methods and evaluates the performances. The heuristic methods decompose the variation of a quality characteristic into upper and lower deviations and adjust the value of the PCIs using decomposed deviations in accordance with the skewness. The weighted variance(WV), new WV(NWV), scaled WV(SWV), and weighted standard deviation(WSD) methods are considered. Methods: The performances of the heuristic PCIs are investigated under the varied situations such as various skewed distributions, sample sizes, and specifications. Results: WV PCI is the best under the normal populations, WSD and SWV PCIs are the best under the low skewed populations, NWV PCI is the best under the moderate and high skewed populations. Conclusion: Comprehensive analysis shows that the NWV method is most adequate for a practical use.

• Agribusiness and Information Management
• /
• v.1 no.1
• /
• pp.19-36
• /
• 2009

1999년 이후 농업인 홈페이지 지원사업 실시 이래 2008년까지 농업인이 운영하는 홈페이지는 전국적으로 1만개소에 달하고 있다. 전자상거래를 성공적으로 운영하고 있는 농업인들의 경우 고객관리에 대한 중요성 인식도가 높고, 이를 관리하기 위한 다양한 프로모션을 전개하고 있다. 이번 연구에서는 농촌진흥청에서 진행하고 있는 농업인 전자상거래 사업에 참여하고 있는 농업인을 대상으로 하여 이들의 고객관리에 대한 필요성 인식정도, 고객확보를 위한 활동, 고객관리의 방법, 고객관리의 유형과 기준, 확보된 고객의 관리를 위한 활동 등을 조사하였다. 농업인들은 전자상거래를 수행하면서, 고객과 직접 접하게 되고, 상품의 판매과정에서 고객관리의 필요성을 높게 인식하고 있으며, 블로그 개설 등 온라인 활동으로 폭을 넓혀가고 있음을 확인할 수 있었다. 하지만, 상당수의 농업인들이 고객관리의 필요성 인식에 비해 이를 실천할 구체적 활동방식과 실행 방법에 대해 구체적이지 못하기 때문에, 정부의 시스템 지원과 교육사업에 있어서 새로운 접근이 필요함을 보여주고 있다.

• Agribusiness and Information Management
• /
• v.1 no.2
• /
• pp.133-156
• /
• 2009

This study proposes development strategies for domestic e-commerce of agricultural products. So far, it grows quantitatively so fast, but because of lack of continuous management, it does not work properly. Previous studies have some outcome for vitalization of e-commerce, but they have limits that they neglect rapid changes of e-commerce circulation structures and practical problems farmers go through when they sell their products. This study deals with these problems more than previous. The first phase of this study analyzes two cases of overseas successful and failure e-commerce sites of agricultural products, for example, Wine.com and Webvan.com. The second phase analyzes As-Is and distribution structure of domestic e-commerce of agricultural products. Finally this study asserts three strategies for domestic e-commerce of agricultural products based on Web 2.0 environment.

• Agribusiness and Information Management
• /
• v.1 no.2
• /
• pp.3-21
• /
• 2009

얼마나 빠른 환경의 변화에 잘 적응하느냐에 따라서 개인과 조직의 성패는 좌우된다. 이러한 환경의 변화에 잘 적응하기 위해서는 정보의 활용이 필수적이다. 본 연구에서는 농장경영체의 정보 활용도 향상을 위한 구체적인 방안을 제시하는데 있다. 이를 위해 설문과 인터뷰조사, 선행사례 조사 등을 실시하고 농장경영에 필요한 의사결정 단계별 정보를 도출하고 이를 제공하기 위한 데이터베이스와 모델 베이스를 제안하였다. 또한 구축된 정보를 잘 활용하는 정보 접근 방법을 병목정보 해결의 시각에서 정형검색과 비정형검색방법을 제시하였다. 이러한 가치사슬적 접근 방법은, 아직 농업분야에서는 보편적인 내용은 아니지만 여타 첨단정보산업과 서비스업에서는 경영체별로 구체화하여 비교적 유용하게 활용하고 있는 방법이다. 본 연구를 바탕으로 품목별로 의사결정 단계별 데이터베이스와 모델베이스가 구축되어 농장경영체가 잘 활용함으로서 불확실성 요인과 변동요인에 잘 대응하여 농업 생산성 향상에 기여할 수 있도록 국가 차원에서 구체적인 시스템적 접근이 필요하다고 본다.

• Journal of Korean Society for Quality Management
• /
• v.33 no.1
• /
• pp.73-82
• /
• 2005

This article proposes a practical approach, which is based on the concept of the expected squared relative error, that can consider both the prediction quality and the practitioner's subjectivity in simultaneously optimizing multiple responses. Through a case study, multiresponse optimization using the expected squared relative error approach is illustrated, and the SAS program to implement the proposed method is provided.

• Journal of Korean Society for Quality Management
• /
• v.28 no.2
• /
• pp.17-38
• /
• 2000

In application, sample size determination is one of the important problems in designing an experiment. A large amount of literature has been published on the problem of determining sample size and power for various statistical models. In practice, however, it is not easy to calculate sample size and/or power because the formula and other results derived from statistical model are scattered in various textbooks and journal articles. This paper describes some previously published theories that have practical relevance for sample size and power determination in various statistical problems, including life-testing problems with censored cases and introduces a statistical package which calculates sample size and power according to the results described. The screens and numerical results made by the package are demonstrated.

• Journal of Korean Society for Quality Management
• /
• v.27 no.2
• /
• pp.251-262
• /
• 1999

In the automated manufacturing systems, the problem regarding how to make production activities flexible is even more important and critical than that regarding how to product large quantities, and the more flexible, if possible, the manufacturing system is, the more competitiveness and profitable factors it gets. This research, therefore, concentrated on establishing the flexibility and evaluating performance on the manufacturing system, operational flexibility is considered because of enabling the manufacturing system to get both the improvement of production rate and the adaptive ability of environment changes. For it, we used the analytical tool, GSPNs, which is a kind of timed Petri-Nets. GSPNs is competent enough to consider practical situations just like operation priorities, machine failure, randomness, concurrency and so on. Through the GSPNs analysis, it is confirmed that in the manufacturing system with operational flexibility is compatible with the traditional performances such as production rate or mean waiting time.

• Journal of Korean Society for Quality Management
• /
• v.19 no.2
• /
• pp.145-157
• /
• 1991

Thid study intends to pursue behavioral-structure of production behavior through statistical models which are using in PERT and Queueing theory. We can corprehand the orders of human production behavior's characteristics by several related attributes of probablity/statistics. These attributes are poisson, Beta, exponential distributions and P.S Laplace's natural probability. Human production behavior is related and regressed to these attributes in many divisions intermediately. Progressive numerical understanding in many essential human behavior acts on the application of practical behavior standard in production word and operation.

• Journal of Korean Society for Quality Management
• /
• v.17 no.1
• /
• pp.89-106
• /
• 1989

For Weibull distributed lifetimes, this paper presents asymptotically optimal accelerated life test plans for practical applications under intermittent inspection and type-I censoring. Computational results show that the asymptotic variance of a low quantile at the design stress as optimal criterion is insensitive to the number of inspections at overstress levels. Sensitivity analyses indicate that optimal plans are robust enough to moderate departures of estimated failure probabilities at the design and high stresses as input parameters to plan accelerated life tests from their true values. Monte Carlo simulation for small sample study on optimal accelerated life test plans developed by the asymptotic maximum likelihood theory is conducted. Simulation results suggest that optimal plans are satisfactory for sample size in practice.