• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.07a
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• pp.451-452
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• 2012

PDP, LCD, IED 등의 디스플레이 패널 재료를 회두로 생장해 오던 디스플레이 장치 시장이 최근 3D라는 어플리케이션이 화두가 되어 시장 성장을 이끌어 오고 있다. 3D 디스플레이 장치 시장의 규모 및 성장속도에 비해 이를 이용할 수 있도록 하는 3D 서비스는 상대적으로 부족하다. 3D 디스플레이 장치를 확보하는 소비자가 늘어남에 따라 지속적으로 증가하는 3D 서비스에 대한 잠재 수요에 대응하기 위해 다양한 형태의 3D 서비스가 계획되고, 다양한 형태의 콘텐츠 제작이 이루어지고 있다. 3D 디스플레이 장치 및 서비스 시장의 지속적인 성장을 위해서는 제작 및 서비스되는 3D 콘텐츠에 대한 품질 평가 방법에 대한 연구가 선행되어야 한다. 이에 본 논문은 3D 비디오에 대해 사람들이 느끼는 주관적 품질 평가 방법을 제안한다. 하나의 영상 도메인에 표현되던 2D 영상과 달리 스테레오스코픽 비전 방식의 3D 입체 영상은 오른쪽과 왼쪽, 두 개의 영상 도메인에 각 각 표현된다. 또한 양쪽 영상의 차이로 인해 깊이감을 인식할 수 있게 된다. 본 논문에서는 양안에 입력되는 영상의 품질을 각각 측정하고, 두 영상의 차이가 이끌어내는 깊이감을 분석하여 입체영상 전체의 품질 평가에 이용하는 방법을 제안한다.

• Journal of the Korean Society for Library and Information Science
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• v.55 no.1
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• pp.415-437
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• 2021

The purpose of this study is to empirically analyze the impact of library service quality on the continuous use of libraries by international students and to verify that library anxiety plays a mediator role between the two variables - 'library service quality' and 'continuous use intention'. To conduct this study, library service quality, continuous use intention, and library anxiety of 213 Chinese international students was measured and the hypothesis through structural equation modeling was verified. The result of the study suggests that library service quality has an impact on continuous use intention and that library anxiety mediates the two variables. Based on the research result, the development of library service for international students was discussed.

• Journal of the Korean Society for Library and Information Science
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• v.46 no.4
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• pp.5-25
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• 2012

The purpose of this study is to develop a measurement tool for the quality of information commons. Information commons is a physical, technological, social, and intellectual place where library users can experience various educational, research, and cultural activities. It is recently gaining popularity and several libraries have implemented it to help users share knowledge and interact with each other. It also intends to provide a place for collaboration, learning, and rest. Despite its benefits and usefulness, there is no measurement tool explicitly designed for the quality of information commons. This study used in-depth personal interview, compared prior studies, and conducted a pilot study to elicit library users' perceptions on information commons and factors influencing on the perceived quality of information commons. Groups of initial items were emerged through classifying and clustering key concepts in the data. Then, the validity of the items were verified through a pilot study. The findings of this study will be useful for developing more reliable and valid survey measurement tool.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.07a
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• pp.410-412
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• 2011

영상 서비스에서 사용자가 시청하는 비디오 화질을 측정하는 것은 사용자의 QoE(Quality of Experience)를 추정할 수 있는 중요한 작업 중 하나이다. 이를 위해 가장 널리 쓰이는 측정 방법 중 PSNR이 있다. PSNR은 원본영상과 시청영상간의 각 픽셀 값의 차이를 계산하여 화질을 측정하는 객관적인 평가 방법이다. 본 논문에서는 객관적 평가 방법인 PSNR에 시청자가 영상 측정 시 느낄 수 있는 시선 인식 집중도를 접목시킨 품질 측정방법을 제안한다. 이는 사용자의 시각적 특성이 고려되기 때문에 보다 사용자에게 맞는 영상 품질을 측정할 수 있게 된다.

• Journal of the Korean Society for information Management
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• v.30 no.4
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• pp.133-154
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• 2013

The purpose of this study is to analyze service quality factors that affect user satisfaction of NDSL Open Service (NOS) and to improve standards of open service for sharing information through the user satisfaction survey. User satisfaction indexes were developed to measure the all aspects of the NOS services. The quality index, satisfaction index, and performance index were identified in this survey. According to the survey findings, the levels of social quality and social satisfaction are relatively high, this shows the positive evaluation and expectation of researchers for open services. However, relatively low level is identified in area of service process quality. Therefore, NOS requires method to help easily take advantage of OpenAPI and strategy to increase service process satisfaction and service environment satisfaction.

• Journal of the Korean Society for Library and Information Science
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• v.35 no.3
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• pp.93-115
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• 2001

Evaluating information quality of government Web service, applying quality measurement methods for web - database was conducted. This approach intended to control the quality of information service by indicating the problems and weak points in terms of retrieval, use of easiness, and user support, and by suggesting the guidelines for improvement. There were two main results to most of the investigation. The first one indicated that web information service of eighty-two percent of domestic government sites was not good enough (less than middle score). and only eight percent of them got higher score than middle point. The second result was that user support aspect was the worst part that we need to consider future course of action for service improvement. More specific guidelines were summarized at the discussion section.

• The Journal of the Korea Contents Association
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• v.15 no.1
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• pp.482-494
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• 2015

The purpose of this study was to investigate a total of 800 visitors of those who had enjoyed "2013 Cheonan Heung-taryeong dance Festival". In order to achieve the research goal, the study conducted the questionnaire in the venue of the festival and selected the research subjects at random. With certain standards to measure the social quality, the process quality and the physical quality as in the service quality determined, the study looked into how each of the extracted factors would influence the service quality in general. The study also discussed effects of the general service quality both on the satisfaction and the re-visit intention of the festival visitors. According to the results from the analysis, 1) the social quality factors (the cultural effect and the image effect), 2) the process quality factors (the visitor-focused service and the food and souvenir), 3) the physical quality factors (the convenience in connection with the visitors' enjoying the festival and the facility arrangement) and 4) the general service quality of the festival were confirmed to affect the visitors' satisfaction. 5) The study also learned that how much the visitors of the festival have been satisfied with the event would have an effect on the visitors' intention to re-visit. After all, the study came up with every statistically significant difference in relation to the effects of the service quality on the satisfaction and the re-visit intention of the visitors in the festival.

• Journal of Korea Port Economic Association
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• v.31 no.4
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• pp.91-106
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• 2015

This study aims to analyze the effects of service quality offered by automotive Ro-Ro terminal operators on customer satisfaction and loyalty. The results of the research can be used to understand how to enhance the service level in order to manage competitiveness of the terminal operators, finally resulting in global competitiveness of the automobile industry of Korea in both exports and imports. We carried out a survey on two groups: shippers (customers) and providers (related terminal operators and stakeholders). To identify and classify the factors into groups, we conducted Exploratory Factors Analysis (EFA) and Confirmatory Factor Analysis (CFA), which showed construct validity and convergent validity. We also calculated Cronbach's alpha for reliability. Five factor groups were identified: tangibles, reliability, responsiveness, assurance, and empathy. We found that empathy is the most influential factor group among the five groups, and that the other groups too exhibited similar effects. Based on the results of the survey and analyses, we can conclude that empathy is most important in automotive Ro-Ro terminals. In particular, specialties, training, experiences, and loyalty of employees are crucial factors because automotive Ro-Ro terminals significantly rely on work forces, differently from other bulk terminals and container terminals. Flexible working hours and fringe benefits for work forces can increase empathy, finally resulting in productivity and efficiency. Next, well-designed work schedules are followed, based on visibility through logistics and SCM activities in automobile export and import processes with information and communication networks.

• 한국정보통신설비학회:학술대회논문집
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• 2009.08a
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• pp.81-85
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• 2009

본 논문은 VoIP, IPTV, VoD 등의 실시간 서비스 품질을 네트워크 노드에서 모니터링함으로써네트워크에서 발생한 품질이상을 분석할 수 있는 스위치 칩을 설계하였다. 인터넷 서비스의 특성상 단대단 서비스에 기반한 실시간서비스는 품질이상이 발생한 위치를 정확하게 분석할 수 없기 때문에 유지보수에 어려움이 있다. 이러한 문제를 해결하기 위해 본 논문에서는 실시간서비스에 해당하는 플로우를 등록하고 해당 플로우가 장치내에서 발생한 패킷손실, RTP 시퀀스 넘버를 참조하여 이전 장치에서의 패킷손실, 패킷의 IAT(Inter Arrival Time), 대역폭, 그리고 장치내 지연을 실시간으로 측정할 수 있는 기능을 가진 AVB(Audio/Video Bridge)칩을 구현하기 위해 IEEE802.1AS를 기만한 시간동기 프로토콜의 정확성을 시뮬레이션하고, FPGA를 이용하여 구현한 AVB 스위치칩에서 타임스템프의 정확성을 확인함으로써 실시간서비스의 품질을 네트워크에서 실시간으로 모니터링 할 수 있는 가능성을 확인하였다.

• 한국IT서비스학회:학술대회논문집
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• 2007.11a
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• pp.667-672
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• 2007

본 연구는 말콤 볼드리지 요소와 BSC의 각 관점의 KPI 지수간의 연계들 통하여 기업 경영품질향상을 위한 평가모형 구축과 전략 설정을 그 목표로 하고 있다. 기업경영과 관련된 제 영역에 대한 고찰이 가능한 말콤 볼드리지 평가 항목을 살펴보고, 기업경영 성과 측정을 위한 구체적 평가항목을 제시함으로써 부서간 연계 및 인과관계 설정, 전략과의 연계가 가능하여 경영자의 전략 설정과 리더십에 도움을 줄 수 있는 BSC 항목을 살펴 본 후, 기업 경영혁신과 프로세스 개선을 위한 두 평가 항목의 연계를 통하여 평가항목 관리요소의 중복을 제거하고 동일화를 달성, '기업성과 향상' 이라는 공동 목표달성을 위해 MB 및 BSC 두 개선 노선이 시너지를 달성할 수 있는 체계를 마련하고자 한다. 이는 MB와 BSC의 연계방안을 살펴봄으로써 기업의 '경영품질'을 향상시키고, 향상된 경영품질을 구체적 항목에 의거하여 체계적으로 평가할 수 있는 방안을 찾음과 동시에 기업 전략 설정에 이바지할 수 있는 모형구축을 그 목표로 하고 있다.