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Kano 모델 기반의 잠재적 고객 요구 개선 지수의 개발 : 교육서비스 분야를 중심으로
이형준,정영배 한국산업경영시스템학회 2018 한국산업경영시스템학회지 Vol.41 No.1
Recently, service quality must reflect several demands of customers who show rapid and various changes so as to be compared with the past. So, objective and rapid measuring methods for service quality are necessary. For them, first of all, service company must calculate their standard of service quality accurately by measuring service quality exactly. Kano classified the degree of influence that is the degree of correspondence of the quality attributes of products and services to the subjective satisfaction of customers. As a result, the types of qualities are classified as attractive, must be, one dimensional, and indifference attributes. They have been widely used quality attributes in various industrial fields up to now. However, Kano model has a limit that it ignores the characters of the next frequent numbers even though there are not much gap comparing to the most frequent number in the questionnaire answers. The limit is attributed to the character of Kano model that the most frequent number is accepted as the only quality character. Timko calculated the customer satisfaction coefficient by using Kano’s method and studied the differences in quality character by classifying the quality characteristics in a graphical way through the relationship between the satisfaction and the dissatisfaction coefficient. In this study, we used the quality level determination method of the 7-point Likert scale, which takes the weight into account, to complement the deficiencies of the existing Kano model. We also developed and applied a Potential Satisfaction Level (P) and Potential Customer Demand Improvement (PCDI) Index to present a new approach to the determination of service quality attributes. To measure the level of potential service satisfaction and to understand the degree of improvement, we collected specimens of 51 participants who has been trained in the National Strategy Business Training Program, which has been managed by government agent, and analyzed the results.1)
이형준,박해진,황지환 한국품질경영학회 2021 한국품질경영학회 학술대회 Vol.2021 No.-
수상함에서 발생되는 캐비테이션 소음은 함정의 생존성 및 전투성을 향상시키기 위해 반드시 제어되어야 하는 요소이다. 이러한 목적을 달성하기 위해 도입된 공기방출시스템은 가스터빈에서 생성되는 공기를 선수방향 축 시작점에서 선미방향 축 끝단까지 이송하여 프로펠러에서 방출하는 장치로서 수중방사소음을 저감시키는데 그 목적이 있다. 하지만 공기방출시스템을 사용하지 않을 시에는 공기방출라인을 통해 해수가 내부로 유입될 가능성이 있다. 그리고 염분 및 해양생물 등이 공존하는 해양의 특수한 환경 때문에 해수가 접촉되는 부분은 장비의 건전성이 훼손되기 쉬운 상황이다. 해수의 유입은 수상함의 신뢰성에 영향을 주기 때문에 반드시 개선해야 하는 문제이다. 이에 따라 이를 방지하기 위하여 축의 시작점에 있는 공기라인에 체크밸브를 추가 설치하였다. 체크밸브를 추가 설치하여 해수유입에 대한 예방을 강화할 수 있으며, 추진축이 4도 정도 기울어져 있는 구조적 특성으로 인해 에어포켓이 형성되어 해수가 유입되는 것을 막는 효과도 기대할 수 있게 되었다.
이형준,권기량,임용현 사단법인 한국질량분석학회 2017 Mass spectrometry letters Vol.8 No.2
Isothiazolinone derivatives are widely used in consumer products as disinfectants or preservatives, but there are growing concerns about their impact on human health. Therefore, rapid screening of these biocides is very important for proper control and regulation of potentially hazardous substances. To this end, low-temperature plasma (LTP) ionization mass spectrometry (MS) was investigated to demonstrate its potential for direct and selective analysis of isothiazolinones from sprayed aerosol samples. Benzisothiazolinone (BIT) was clearly identified from a commercial fabric deodorant using LTP ionization MS and MS/MS. LTP allowed selective ionization of BIT directly from the simply sprayed aerosol sample and illustrated its potential for fast screening without sample pre-treatments. Selective nature of LTP ionization, on the other hands, implicates use of LTP ionization MS as a general screening method for specific groups of hazardous chemicals in commercial products.
이형준 사단법인 한국계산역학회 2013 Computers and Concrete, An International Journal Vol.12 No.6
The high strength materials have been more widely used in reinforced concrete structures because of the benefits of the mechanical and durable properties. Generally, it is known that the ductility decreases with an increase in the strength of the materials. In the design of a reinforced concrete beam, both the flexural strength and ductility need to be considered. Especially, when a reinforced concrete structure may be subjected an earthquake, the members need to have a sufficient ductility. So, each design code has specified to provide a consistent level of minimum flexural ductility in seismic design of concrete structures. Therefore, it is necessary to assess accurately the ductility of the beam sections with high strength materials in order to ensure the ductility requirement in design. In this study, the effects of concrete strength, yield strength of reinforcement steel and amount of reinforcement including compression reinforcement on the complete moment-curvature behavior and the curvature ductility factor of doubly reinforcement concrete beam sections have been evaluated and a newly prediction formula for curvature ductility factor of doubly RC beam sections has been developed considering the stress of compression reinforcement at ultimate state. Based on the numerical analysis results, the proposed predictions for the curvature ductility factor are verified by comparisons with other prediction formulas. The proposed formula offers fairly accurate and consistent predictions for curvature ductility factor of doubly reinforced concrete beam sections.