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An Object-Oriented Design Framework for Developing Product-Service Systems
오형술(Hyung Sool Oh),문승기(Seung Ki Moon) 한국산업경영시스템학회 2015 한국산업경영시스템학회지 Vol.38 No.4
Trends of integrating products and services lead to the emergence of Product-Service System (PSS). To implement and embody a PSS solution in new product development, a comprehensive design framework is allowed designers to facilitate the design factors of the PSS in complex business environments. A physical product, containing functionalities for services, is the role of medium between customers and a manufactures. Customers can access those metaphysical interfaces to utilize the product fully or expand its performances. The PSS is aiming to prolong its lifecycle while maintaining its expected quality. Since the quality can be represented as a measure which belongs to user's perspective, guaranteeing certain level of quality can be interpreted to sustaining customer satisfaction. The objective of this paper is to propose a PSS design framework to identify design factors for developing products and services by integrating object-oriented concepts and blueprinting in context of a business ecosystem. The proposed model is developed based on relationship products and services matching with their design factors. The products and the services are then brought together to form a PSS. Functions and processes can be categorized to identify the design factors in different levels using the object-oriented concepts. Objected-oriented concepts provide PSS analysis tools for describing a business process or a workflow process in the PSS. The blueprint is used to identify the relationships between the products functions and the service processes that are offered as part of a job. To demonstrate of the effectiveness of the proposed model, we use a case study involving a smart phone.
오형술(Hyungsool Oh),문승기(Seung Ki Moon) 한국산업경영시스템학회 2010 한국산업경영시스템학회지 Vol.33 No.2
Nowadays, customers have increasing needs, so more and more enterprises are selling their products with additional services and or contents. The emergence of service added to the product leads to the emergence of the Product-Service Systems(PSS). Many researches related to PSS are mainly concemed with general PSS and PSS modeling, which can not readily assist manufactures of consumer products to implement and realize PSS solution. We have wondered whether customers can distinguish service functions from product functions. Through the case studies on Apple and Nintendo and the survey on the representative 5 IT products, we propose the design factors of products and services for PSS.
이영해(Young-Hae Lee),문승기(Seung-Ki Moon) 한국정보과학회 1995 한국정보과학회 학술발표논문집 Vol.22 No.1
The classification of objects from the digitized images is one of the most important tasks of computer vision systems. In this paper, the new algorithm for pattern classification is described. It is based on the use of the signature and the autocorrelation which represent the shapes of boundaries detected in digitized binary images of the parts. And then Neural Network is applied for the pattern matching of parts. The autocorrelation representing the parts is invariant to the transformations like scaling, translation, and rotation of the image of parts. Also, the computation procedure of this algorithm is very simple. This algorithm could be applied to an accurate and fast recognition and inspection of parts in the automated manufacturing systems.
초등 영어에서 학습 전략 훈련이 듣기 능력에 미치는 영향
고경석(Ko Kyoung-Seok),문승기(Moon Seung-Ki) 한국영어교과교육학회 2002 영어교과교육 Vol.1 No.2
This study is to investigate the effects of language learning strategies on the frequency of the use of language learning strategy and the listening comprehension ability of Korean elementary school students. For this purpose, the theoretical foundation of the necessity and method of instruction focused on language learning strategies were investigated. Also, an applicable lesson model for English language instruction, concentrating "the learning of strategies aspect" is designed Experimental research was conducted in order to apply such strategies on sixth-grade students. Out of three classes two classes were chosen as the object of this research. The selected classes scored very similar on the listening test, as well as and the questionnaire inquiring about the frequency of language learning strategies use. One class was determined to be the experimental class, to whom the language learning strategies instruction were applied. The other class was the comparison class, to whom English was taught using one of the general English texts. The major findings of this study were: First, the language learning strategy instruction makes elementary students use the language learning strategy more frequently. Second, the experimental group obtained higher scores than the comparison group whose first score was slightly higher than the experimental group. Synthesizing the given results showed that language learning strategy instruction has a positive effect on the students" frequent use of the language learning strategy. In addition, the results showed improvement of the children"s listening skills.
양동훈 ( Dong Hoon Yang ),박상욱 ( Sang Wook Park ),문형철 ( Hyeung Chul Moon ),유경완 ( Kyoung Wan You ),은서준 ( Seo Joon Eun ),문승기 ( Seung Ki Moon ),박철민 ( Choel Min Bak ),조신형 ( Shin Hyoung Jo ) 대한췌담도학회 2016 대한췌담도학회지 Vol.21 No.4
총담관의 자발적 천공은 흔하지 않으며, 이에 대해 충분한 연구와 경험이 부족한 상태이다. 본 저자들은 원인을 알 수없는 복통과 난치성 복수를 호소하는 환자에서 총담관의 자발적 천공을 진단하고, 내시경역행담췌관조영술을 통한 완전피막형 자가팽창형 금속스텐트의 삽입술과 보존적 치료를 통하여 치료에 성공했던 증례를 경험하였기에 보고한다. Perforation of the biliary tree mostly results from injury to the bile duct during surgery or procedures such as endoscopic retrograde cholangiopancreatography (ERCP) and spontaneous bile duct perforation is rare in adults. As the clinical picture varies, early diagnosis and treatment of spontaneous biliary peritonitis is difficult. A 52-year-old male patient presented with abdominal pain and intractable ascites. He already experienced severe abdominal pain 2 months ago and underwent percutaneous pigtail drainage for the ascites at nearby hospital. ERCP showed large filling defect with leakage of contrast media from the mid common bile duct (CBD) into the peritoneal cavity. We performed endoscopic sphincterotomy and extracted CBD stones with basket and balloon catheter. Then fully covered self expandable metal stent was placed in CBD. After the procedure, the symptom was improved and the amount of pigtail drainage from abdominal cavity was dramatically decreased. 6 weeks later, removing the metal stent, there was no more leakage of contrast media into peritoneal cavity. We report a very rare case of spontaneous bile leakage which was successfully managed with placement of metal stent.