• 품질경영학회지
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• 제30권1호
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• pp.74-96
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• 2002

The objectives of this study is to suggest the rectifying sampling inspection plan considering quality cost. Limiting quality level(LQL) plans(also called LTPD plans) and outgoing quality(OQ) plans are considered. The Hald's linear cost model is discussed with and without a beta prior for the distribution of the fraction of nonconforming items in a lot. It is assumed that the sampling inspection is error free. We consider the design of reliability acceptance sampling plan (RASP) for failure rate level qualification at selected confidence level. The lifetime distribution of products is assumed to be exponential. MIL-STD-690C and K C 6032 standards provide this procedures. But these procedures have some questions to apply in the field. The cost of test and confidence level(1-$\beta$ risk) are the problem between supplier and user. So, we suggest that the optimal life test sampling inspection plans using simple linear cost model considering product cost, capability of environment chamber, environmental test cost, and etc. Especially, we consider a reliability of lots that contain some nonconforming items. In this case we assumed that a nonconforming item fail after environmental life test. Finally, we develope the algorithm of the optimal sampling inspection plan based on minimum costs for rectifying inspection and RASP. And computer application programs are developed So, it is shown how the desired sampling plan can be easily found.

• 디지털융복합연구
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• 제15권12호
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• pp.293-301
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• 2017

대부분의 신상품들은 시장에서 급격히 사라질 뿐만 아니라 기존 상품들의 매출감소를 불러온다. 이처럼 수명주기가 짧은 상품으로 인해 소매상들은 과다한 재고를 보유하게 될 뿐만 아니라 소비자들은 자신들의 선호를 맞는 제품들을 발견하는데 어려움을 겪는다. 이런 문제를 해결에 하는데 있어서 추천 시스템은 좋은 해결방법이 될 수 있다. 그러나 대부분의 추천 시스템들은 소비자의 고정된 선호를 이용하기 때문에 변화하는 소비자의 선호를 반영하지 못하는 문제가 있다. 이러한 문제를 해결하기 위하여 본 연구에서는 시간에 따라 변화하는 소비자의 선호를 반영한 추천 방법론을 제안하였다. 제안한 방법론은 소비자의 동적 선호 프로파일 작성, 네이버 형성, 추천 리스트 작성의 3 단계로 구성되어 있으며, 모바일 이미지 거래 데이터를 이용하여 제안된 방법론의 유용성을 검증하였다. 시험결과 제시된 방법론의 추천 정확도가 전통적인 협업필터링의 정확도 보다 높았다. 이러한 결과를 통해, 본 연구에서 제한한 방법론이 짧은 수명주기를 가진 제품을 추천하는데 효과적이라는 결론을 내릴 수 있다. 따라서 향후 제안된 방법론을 현업에 적용하여 실제적 유용성을 검증할 필요가 있다.

• 산업경영시스템학회지
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• 제24권65호
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• pp.1-9
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• 2001

Enterprises confronted the Environment of infinite competition should be prepared to abrupt variations of management environment and have the ability to be changed in short term. It has to be studied, the control method of products that correspond to molt-functionalization and reduced product life which is caused by high-quality and varied customers demands. As a process control method, we must be able not only to control varies characteristic in a control at once but also to detected special values quickly for high-quality. In this paper a control method referred above is presented.

• 동아시아식생활학회지
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• 제22권5호
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• pp.701-710
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• 2012

The purpose of this study was to classify customer's satisfaction of coffee shops in term of economic and non-economic satisfaction, as well as to examine the effects of coffee shops image on customer's economic and non-economic satisfaction and customer brand loyalty. For this purpose, we collected data from 301 coffee shops, as well as from customers who visited brand name coffee shops in Seoul, Korea. The result of this CFA shows that this study was valid and reliable. Our findings were as follow: (1) Product and accessibility image of coffee shops influenced customer's economic satisfaction, whereas facility and staff image did not. (2) The effects of product, facility, staff and accessibility image on customer's non-economic satisfaction were significant. (3) Coffee shop image was not influenced by brand loyalty. (4) Economic and non-economic satisfaction had a significant impact on brand loyalty.

• 동아시아식생활학회지
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• 제21권1호
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• pp.125-133
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• 2011

This study was carried out to strengthen productivity and employee management through the development of simple pre-processed foods based on Hansik (Korean foods) and to investigate the utilization of fresh vegetable menus, pretreatment, and cooking time in the preparation of vegetable side dishes. The reasons for not using pretreated foods were increased cost, required product size is not available, and not hygienic. The acceptable rate of increase in cost when purchasing simple pre-processed foods was under 10%. The expected developed products of simple pre-processed vegetable foods were balloon flower root salad, seasoned green vegetables, and sheredded white radish. The expected developed products of simple mixed vegetable pre-processed foods were deodeok+balloon flower root and white radish+pear. Based on these findings, to increase the utilization of simple preprocessed foods, development of various product sizes and sauces is needed, cost must be reduced, and hygiene improved.

• 한국관광식음료학회지:관광식음료경영연구
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• 제13권1호
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• pp.29-41
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• 2002

Controlling food materials, is getting more significant in hotel management nowadays as the selling of food beverage continue to rise. F&B managers have been required to have new management of the food materials by a fierce competition, an increase in cost, the shortened span of product life and customer's demand that is becoming more various and sophisticated since Korea was placed under the influence of IMF. I'm going to analyze the factors that cause waste and loss through a series of the process to purchase inspect, store food materials, make a product with that materials and sell the product in order to make more profits by making the circulation of the food materials easier and more efficiently. I studied how 3 chain hotels of A group purchase, store the food materials and control stock. I made up questionnaires about the circulation and control of food materials to 107 cooks in order to know what the cooks who are working at the hotel regard as a real problem and a practical solution. This research indicates that purchasing, producing and selling departments don't establish the mutual connection, a professional purchasing manager is strongly needed and there is difficulty in predicting the proper timing to supply. Also the research shows that A hotel group controls the food materials by analyzing the amount of consumption, stock, setting up the period of validity and uses slowly moving food materials in stock mainly by introducing the menu that aims at four seasons. As a result, the research suggests that we should introduce the concept of food producing factory, as it were, Central Kitchen that is based on the network among various kitchens to improve the flow of the food materials.

• 한국식품조리과학회지
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• 제27권1호
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• pp.75-84
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• 2011

The aim of this study was to develop a convenient brown sauce product with long shelf life that has similar taste and quality characteristics with sauce used in restaurants. Response surface analysis was carried out to optimize brown sauce. Extracted brown sauce powder was subjected to hot air drying, infrared drying, freeze drying, and spray drying to determine the appropriate drying method for brown sauce manufacturing. The optimum extraction conditions were set by superimposing and reading each reaction surface that satisfied all of the sensory characteristics such as color, smell, taste, concentration, and overall preference level in order to set the optimum conditions for brown sauce production. The optimum extraction conditions for brown sauce were determined to be heating time 30 min, gelatin addition quantity 9.00%, and tomato paste addition quantity 11.25%. Reliability test showed a similar value to the predicted scope when compared to the experimental value obtained under the same conditions as the predicted value according to RSM (response surface methodology), enabling verification of the derived regression formula. Product powder of ideal brown sauce by heating, infrared radiation, freezing, and spray drying and investigate result for functional tests of color, flavor, taste, viscosity, overall acceptability and show highly acceptability on powder by infrared rays and freeze-drying methods. Especially, infrared radiation method resulted in favorable color and flavor values while freeze-drying method produced good taste and viscosity values and high overall acceptability. Therefore, infrared radiation drying method and freeze-drying method to product powder.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제7권1호
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• pp.38-47
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• 2001

PDM(Product Data Management)분야는 일반적으로 제조업체에서 제품개발에 필요로 하는 제반정보를 제품기획단계부터 폐기단계까지 제품 생명주기(Lifecycle) 전반에 걸쳐 일원적으로 통합 관리하도록 하는 제품정보 통합관리 솔루션(solution)을 말한다. PDM 어플리케이션은 매우 크고 복잡함 영역이다. 프레임워크의 재사용은 단순한 소스코드나 어플리케이션 일부의 재사용이 아닌 소프트웨어 아키텍처의 재사용을 가능하게 함으로써 생산성 향상을 가능하게 하는 방법이다. 본 연구에서 PDM분야에서 프레임워크를 개발하게된 목적이기도 하다. 즉, PDM 프레임워크는 새로운 PDM 어플리케이션 개발에 드는 시간과 노력을 줄일 수 있게한다. 그러나 프레임워크는 대규모의 클래스들의 집합과 그들간의 복잡한 상호작용을 정의하고 있기 때문에, 프레임워크 기반 재사용 역시 재사용 공정을 지원하는 재사용 환경이 제공되어야한다. 이러한 도구를 바탕으로 큰 규모의 프레임워크를 이해하고 재 정의할 Hot spot을 효과적으로 식별할 수 있게된다. 본 연구에서는 저장소(repository)를 기반으로 컴포넌트와 컴포넌트에 대한 정보를 관리함으로써 컴포넌트를 이해하고 프레임워크에 정의된 hot spot에 새로운 요구사항을 정의하여 새로운 어플리케이션의 개발 과정을 효과적으로 지원하는 도구의 개발하였다.

• 한국안전학회지
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• 제27권2호
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• pp.92-97
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• 2012

Risk management is the process that helps to identify hazards, analyze them, and then to create an action plan to avoid and mitigate these hazards. The main objective of risk management in product development and manufacturing is to provide safe and efficient products without spending too many resources. Medical device manufacturers also face enormous risks - regulatory, legal, and financial - based on their products and processes, and the concepts of risk management are particularly important because any single failure may result in serious damages to body or loss of life. In this regard, a set of guidelines for the application of risk management to medical devices has been issued by ISO and specified in the document ISO 14971 Medical devices - Application of risk management to medical devices. The main objective of this study is to investigate the application of risk management to dental implant development and manufacturing processes based on ISO 14971. A general risk management process is first introduced, and the application of ISO 14971 to dental implants is further investigated.

• Asia Marketing Journal
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• 제21권2호
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• pp.73-98
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• 2019

As information and communication technology continue its remarkable development, the exchange of information online becomes as prevalent and frequent as face-to-face communication in daily life. Therefore, the management and application of WOM (word of mouth) practices will become more important than ever to companies. Currently, there are various types of communication channels for online WOM, and each channel has its own unique traits. Most of the previous research studies online WOM by examining the information inside a single communication channel, but this research chooses two different communication channels and analyzes the effects of online WOM with each channel's unique characteristics. More specifically, this research focuses on the expectation that the effects of information from Twitter and blogs on product sales may differ because Twitter and blogs, two different communication channels for online WOM, have their own unique traits. Our particular aim is to perform an in-depth examination on the effects of communication channel's volume and valence on product sales, two important attributes of online WOM. Furthermore, while most of the empirical research focuses on online WOM and analyzes its effect on markets of temporary experience goods, such as movies and books, this research highlights focuses on the automobile market, a durable goods market. The results of our analysis are as follows: First, regarding blogs, a positive valence significantly and positively affects the sales of products, and this result indicates that consumers are influenced more by the emotional aspect of a product presented in a post than by the number of blog posts. Second, regarding Twitter, the volume of online WOM significantly and positively affects sales, an indication that as the number of posts increase, the sales increase. Through this research, we suggest that even those firms that sell durable goods can increase sales through the management and application of online WOM. Moreover, according to the characteristics of communication channels, the effects of online WOM on sales differ. As a practical implication of this research, we suggest that companies can and should create marketing strategies appropriate to their targeted communication channels.