• 한국정보과학회논문지:시스템및이론
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• 제33권11호
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• pp.810-819
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• 2006

본 논문에서는 네트워크 통신에서 혼잡으로 인한 패킷의 손실을 최소화하기 위하여 새로운 버퍼 모델인 적응적인 이중 버퍼 모델을 제안한다. 이는 제약된 메모리 환경에서 송수신 버퍼가 서로의 여유 공간을 공유하여 패킷의 손실을 최대한 줄일 수 있는 버퍼 모델이다. 또한 리스트와 비슷한 성능을 지니는 본 버퍼 모델은 자유 리스트를 사용한 버퍼와 달리 메모리 누수로 인한 버블(bubbles) 현상을 방지하므로 제한된 환경의 네트워크 버퍼에 적용할 수 있으며 배열을 사용하는 경우와 비교 할 때 최대 100% 성능 향상을 기대할 수 있다.

• 한국수자원학회논문집
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• 제38권8호
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• pp.631-643
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• 2005

신설될 복합화력발전소 취수펌프장 계획안에 대하여 수치 및 수리모형실험을 수행하고 순환수취수펌프운영에 문제를 발생시킬 가능성이 발견되면 개선안을 도출하는 것이 본 연구의 목적이다. 수리모형은 1:20의 크기로 아크릴을 이용하여 제작되었고 2차원 수치모형실험은 RMA2모형을 이용하였다. 수리 및 수치모형실험의 결과를 평가하기 위하여 취수로 및 취수펌프장내 흐름에 대한 평가기준을 설정하였다. 복합화력발전소 취수펌프장의 계획안에 대한 2차원 수치모형실험을 통하여 얻어진 연직방향 와도를 수리모형실험결과와 비교하여 흐름평가기준의 하나인 와류발생 가능성을 평가하였다. 계획안은 취수펌프장내에서 큰 규모의 와류가 발생하여 순환수취수펌프운영에 문제를 발생시킬 수 있을 것으로 판단되었다. 이에 따라서 9개 개선안이 고안되어 수치모의되었다. 9개중 4개의 개선안에 대하여 수리모형실험이 수행되었다. 수리모형실험에 근거하여 4개의 개선안의 하나가 최종개선안으로 제시되었다. 공간적인 제약조건이 있는 순환수취수펌프장 및 취수로 설계의 경우 격벽과 도류벽을 이용하면 순환수취수펌프장의 흐름상황을 개선할 수 있는 것으로 나타났다.

• 한국콘텐츠학회논문지
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• 제12권7호
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• pp.346-357
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• 2012

본 연구는 Kano모델을 활용하여 커피전문점의 다양한 품질요인들의 속성을 소비자의 관점에서 분류하였다. 또한, 각 품질요인들이 고객만족 또는 고객불만족에 미치는 상대적 영향력을 분석하기 위해 만족계수와 불만족계수를 산출하였다. 아울러, Kano모델의 한계점을 보완하고 품질요소들에 대한 커피전문점의 품질개선 여지를 파악하기 위해 잠재적 고객만족개선지수(PCSI Index)를 제시하였다. 분석결과, 매력적 품질요소에는 저렴한 가격, 실내인테리어의 고급스러움, 테이블과 의자의 편안함, 무선인터넷 사용의 편리성이 포함되는 것으로 나타났다. 한편, 일원적 품질요소로는 매장의 청결 및 위생, 가격 대비 품질인 것으로 나타났다. 잠재적 고객만족개선지수(PCSI Index)를 산출하기 위해 카페베네와 스타벅스의 만족도를 분석한 결과, 저렴한 가격, 가격 대비 품질 등에서 고객만족 개선 여지가 높은 것으로 나타났다. 본 연구결과는 커피전문점 경영에 있어서 고객만족과 향후 경쟁력 확보를 위해 우선적으로 관심을 두고 개선해야 할 품질요소가 무엇인지에 대한 시사점을 제공해 준다는 점에서 의의를 찾을 수 있다.

• 산경연구논집
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• 제10권7호
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• pp.71-82
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• 2019

Purpose - This study aims to identify the priorities of medical service quality improvement by customer satisfaction characteristics and potential customer satisfaction improvement (PCSI) index based on the dualistic quality classification of Kano Model (1984) for Comprehensive Health Screeening Center in General Hospitals and Centers only for Comprehensive Health Screening and suggest a direction for future improvement. Research design, data, and methodology - Through advanced research on health screening medical service quality, this study set four service quality factors, including tangible, human, process and supportive factors, and 39 measurement items. Based on these items, the study used 117 questions, which consist of dualistic quality factors, customer satisfaction coefficients, positive and negative questions for PCSI index and questions for current satisfaction. 300 effective samples were collected for adults in their 20s who experienced health screening service in Seoul, Gyeonggi-do and Incheon within the past two years. Collected data were input in the quality evaluation duality table to categorize quality factors and calculate customer satisfaction coefficients by Timko(1993). The study also analyzed PCSI index in comparison with current satisfaction and identified priorities in quality improvement. Results - It was found that the most urgent factors to improve the quality in both groups were adequate waiting hours and emergency response for complications, which are process factors classified as unitary quality. It is urgently needed to improve the quality as the PCSI index was high in supportive factors (complaint response team) as attractive quality in Comprehensive Health Screening Center in General Hospitals and in process factors (prevention of infection) as unitary quality in Centers only for Comprehensive Health Screening. As the PCSI index was low in space use as a tangible factor, it was found that the current level can be maintained instead of improvement. Conclusions - To improve the health screening medical service quality, it is required to focus on process factors (adequate waiting hours, emergency response for complications, prevention of infection) and supportive factors (complaint response team) among service qualities perceived by users. It is proposed to ensure continuous efforts to manage and reinforce priorities as a direction for future improvement in health screening service.

• Nutrition Research and Practice
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• 제4권2호
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• pp.163-172
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• 2010

The purposes of this study were to assess hospital foodservice quality and to identify causes of quality problems and improvement strategies. Based on the review of literature, hospital foodservice quality was defined and the Hospital Foodservice Quality model was presented. The study was conducted in two steps. In Step 1, nutritional standards specified on diet manuals and nutrients of planned menus, served meals, and consumed meals for regular, diabetic, and low-sodium diets were assessed in three general hospitals. Quality problems were found in all three hospitals since patients consumed less than their nutritional requirements. Considering the effects of four gaps in the Hospital Foodservice Quality model, Gaps 3 and 4 were selected as critical control points (CCPs) for hospital foodservice quality management. In Step 2, the causes of the gaps and improvement strategies at CCPs were labeled as "quality hazards" and "corrective actions", respectively and were identified using a case study. At Gap 3, inaccurate forecasting and a lack of control during production were identified as quality hazards and corrective actions proposed were establishing an accurate forecasting system, improving standardized recipes, emphasizing the use of standardized recipes, and conducting employee training. At Gap 4, quality hazards were menus of low preferences, inconsistency of menu quality, a lack of menu variety, improper food temperatures, and patients' lack of understanding of their nutritional requirements. To reduce Gap 4, the dietary departments should conduct patient surveys on menu preferences on a regular basis, develop new menus, especially for therapeutic diets, maintain food temperatures during distribution, provide more choices, conduct meal rounds, and provide nutrition education and counseling. The Hospital Foodservice Quality Model was a useful tool for identifying causes of the foodservice quality problems and improvement strategies from a holistic point of view.

• 산업경영시스템학회지
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• 제41권1호
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• pp.118-127
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• 2018

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.

• 정보처리학회논문지D
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• 제9D권3호
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• pp.435-446
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• 2002

최근에 많은 기업들이 재사용 컴포넌트를 이용하여 소프트웨어를 개발하고 있다. 컴포넌트의 효과적인 재사용은 소프트웨어 개발 생산성을 높여주고, 품질 향상을 유도하며, 품질이 우수한 컴포넌트 산출물의 개발은 컴포넌트 기반 소프트웨어 개발의 이슈로 논의되는 유지보수 문제를 감소시킨다. 본 논문에서는 경험적 연구에 의한 컴포넌트 개발 문서의 품질 평가 및 개선 관한 방안을 제시한다. 컴포넌트 품질 평가 방안은 컴포넌트 품질 탐조 모델과 품질 평가 모델로 구성된다. 탐조 모델은 컴포넌트 개발자를 위한 품질 지침을 포함하며, 평가 모델은 컴포넌트 유통 및 평가기관을 위한 평가 지침을 포함하고 있다. 본 논문의 타당성을 검증하기 위해, 컴포넌트 개발 기업을 대상으로 품질평가 모델을 적용하고 개선에 관한 방안을 제시하였다. 또한, 컴포넌트 문서의 품질 개선 방법 및 개선 효과에 대한 분석 내용을 제시하였다. 본 논문에서 제시한 컴포넌트 개발 산출물의 품질평가 모델은 품질이 우수한 컴포넌트 개발 산출물의 생산을 유도하며, 합리적인 품질 평가 방안을 제공한다.

• 한국소음진동공학회논문집
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• 제22권6호
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• pp.509-523
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• 2012

The sound quality based on design optimization, throughout the development process of various electronic office equipments, needs to be considered in order to respond the increased needs for the emotional satisfaction of customers in terms of psycho-acoustics. This paper focuses on how to describe the characteristics of operating sound radiated from laser printers by using various sound attributes, and to model the sound quality index that can properly evaluate the subjective preference on modification conditions in the improvement study quantitatively. Especially, the proposed verification process, in the form of combining the correlation based method and the decision error based method, was applied to improve the generality and reliability of a group of participants in the jury evaluation. The modified Aures tonality model was also proposed to improve the correlation coefficient with the mean response of participants by optimizing some parameters. As a result, the loudness, articulation index, roughness, tonality, fluctuation strength were used to model the sound quality index for laser printers by using the multiple-linear regression method. Through the improvement study, it was confirmed that replacing the absorbing materials is effective to reduce the tonalness radiated from the side of a reference printer model. Based on above results, it can be concluded that the proposed model has enough usefulness as quantitative evaluation index to evaluate the difference between modification conditions in the improvement study.

• 정보관리학회지
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• 제39권3호
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• pp.195-216
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• 2022

본 연구는 대학도서관에서 제공하는 서비스 가치를 극대화하기 위하여 서비스디자인 방법론을 대학도서관에 적용하였다. 이를 위하여 서비스디자인 모형인 '더블다이아몬드모델'(Double Diamond Model)을 대학도서관에 적용, 서비스디자인 도구인 퍼소나(Persona), 고객여정지도(Customer Journey Map), 터치포인트(Touch Points)를 활용하였다. 서비스디자인을 대학도서관에 반영하기 위하여 주제와 관련된 문헌 및 선행연구를 고찰하였으며, 설문조사 및 이용자와 사서면담, 현장조사를 통해 상황별 이슈를 발견하고 퍼소나와 상황시나리오를 도출하였다. 나아가 설정된 퍼소나의 상황별 행동과 이용자의 감정변화에 대한 정보를 종합하여 이를 고객여정지도로 시각화하고 3개 분야 11개 항목의 서비스 개선안을 제안하였다. 본 연구는 특정 서비스를 개선하기보다 서비스 개선방안을 도출하기까지의 과정에 주안점을 두었다. 또한, 대학도서관 서비스개선 및 새로운 서비스 방안을 제시하는 것이 본 연구의 목적이었다. 이를 통해 실질적인 서비스 개선 방안을 대학도서관에 적용하였다는 것에 본 연구의 의의가 있다.

• International Journal of Quality Innovation
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• 제9권3호
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• pp.1-14
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• 2008

Patient satisfaction with the Emergency Department(ED) in a hospital is related to the length of stay, and especially to the amount of waiting time for medical treatments. ED overcrowding decreases quality and efficiency, therefore affecting hospitals' profitability. This paper presents a forecasting and simulation model for resource management of the ED at Moses H. Cone Memorial Hospital. A linear regression forecasting model is proposed to predict the number of ED patient arrivals, and then a simulation model is provided to estimate the length of stay of ED patients, system throughput, and the utilization of resources such as triage nurses, patient beds, registered nurses, and medical doctors. The near future load level of each resource is presented using the proposed models.