• Journal of dental hygiene science
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• v.3 no.2
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• pp.83-88
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• 2003

Patient satisfaction is now recognized as a outcome indicator of health care quality. The objective of this research was to evaluate a patient satisfaction survey instrument specially applicable to dental care, and to examines the reliability and the effect of response biases on reported satisfaction. The acceptability of satisfaction as a quality indicators was qualified by several measurement problems. The patient questionnaire was administered in four different study samples to examine the consistency of data. Cronbach's alpha was used as the measure of internal consistency. A aquiesent bias was found in the sample of 80(20%) respondents. Response biases affacted level of measured satisfaction. Highly acquiesent respondents were older, less well educated than nonaquiesent subject.

• The Journal of Korean society of community based occupational therapy
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• v.9 no.2
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• pp.43-58
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• 2019

Objective : The purpose of this study was to develop an assessment tool to measure Korean occupational balance. Methods : From March 2017 to July 2019, preliminary questionnaire was prepared through analysis of previous research and expert focus meeting, and preliminary questions were selected through the Delphi survey. In order to verify the validity of the items, Rash analysis was conducted to analyze the persons and items fitness, the distribution of item difficulty, separation reliability, and the appropriateness of the rating scale. Results : Among 141 subjects, 9 (6.38%) in time use and 11 (7.80%) in the occupation area were inappropriate subjects. As a result of analyzing the appropriateness of the items except for the inappropriate subjects, the 3 items were judged as ineligible items, but 1 item of the occupation characteristics was finally deleted based on the theoretical and clinical grounds. In the analysis of the scale, 4 points were more appropriate than the 5 point scale, and the separation reliability was .86~.94. Finally, 3 categories (time use, occupation area, occupation characteristics) and 18 items were selected. Conclusion : The occupational balance assessment tool was selected three categories and 18 questions finally, three categories and 18 questions, and was developed on a four-point Likert scale. Further research needs to prove the concurrent validity of the K-OBA and to analyze the factors that influence the occupational balance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.10
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• pp.530-540
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• 2020

Ecological momentary assessment (EMA) is a method that captures the current experience and behavior of subjects in real time in a natural environment. The data collected by EMA reveals alterations according to the time and context of experience and action. The Trier Inventory for Chronic Stress (TICS) is a tool that measures momentary stress, and is capable of measuring stress experienced in real life. This study was undertaken to verify the validity and reliability after translating the short form TICS into a Korean version. Totally, 89 police officers working at the police station in the capital participated in this study. The mobile application developed for this study was installed on their smartphones, and data were collected four times a day for seven consecutive days. Confirmatory factor analysis and content validity index (CVI) was applied to test the validity, and concurrent validity was evaluated by correlating with the occupational stress score. The model was validated by confirmatory factor analysis, and we obtained good reliabilities (I-CVI=0.83-1, RMSEA=0.104, SRMR=0.104, CFI=0.948, TLI=0.919, Cronbach's alpha=0.839). Our findings indicate the reliability, and validate use of the Korean tool for measuring momentary stress.

• The Journal of the Korea Contents Association
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• v.12 no.7
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• pp.394-405
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• 2012

This study is aimed at developing a tool to measuring school police's job performance, and verifying its credibility and validity. This study collected the sample to 250 subjects using a significance collection method to parents of elementary schools school police work. But excluding dishonestly responding data, this used total 210 people for the final analysis. This study executed experts' meeting, exploratory and confirmatory factor analysis, and item analysis to verify reliability, and verification of internal consistency and reliability. This study extracted and confirmed 7 factors for specialization, attitude, program, prevention activity of school violence, effect, basic duty, teaching for school time and home time, and correlation with related people. Through the above research approach and procedure, this study arrived at the following conclusion. First, validity to school police's job performance and measurement tool to job performance is very high. That is, school police's job performance was explored and confirmed through correlation with specialization, attitude, program, prevention activity of school violence, effect, basic job, teaching for school time and home time, and related people, and of them, explanation of attitude is the highest. Second, reliability to the measurement scale for school police's job performance is very high. That is, school police's job performance has high correlation between items, sub-factors, and total scores, and reliability of internal consistency, Cronbach's ${\alpha}$ value, is over .708. Putting them together, measurement scale for school police's job performance is a questionnaire sheet with very high level of validity and reliability.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2008.11a
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• pp.85-88
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• 2008

예비 슬라이스(Redundant picture)는 에러가 발생하기 쉬운 환경에서 비디오가 전송될 때 에러를 보상하기 위한 H.264/AVC 부호화 표준의 도구들 중에 하나이다. 본 논문에서는 예비 슬라이스의 삽입으로 인해 발생하는 오버헤드 비트와 손실률을 고려한 LA-RDO(Loss-aware rate-distortion optimization) 모델을 제시하며 제안하는 모델에 기초해서 예비 슬라이스의 삽입 여부를 결정한다. 실험결과는 제안하는 방법이 참조 소프트웨어(JM: Joint Model)에 있는 HRP(Hierarchical redundant picture)와 비교했을 때 평균 0.5dB의 PSNR이 증가함을 보였다. 특별히 낮은 비트율에서 상대적으로 높은 성능을 보이므로 비디오 화상 회의와 같이 낮은 비트의 영상을 요구하는 무선 전송 환경에 적합할 것으로 보인다.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04a
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• pp.742-744
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• 2002

얼굴 애니메이션은 개인을 쉽게 구분하고 의사소통을 효율적으로 할 수 있는 보조도구로써 최근 연구가 활발하다. 본 논문에서는 얼굴 표정생성을 위해서 실제얼굴의 피부조직 얼굴 근육 등 해부학적 구조에 기반한 근육 기반 모델 방법을 사용하여 현실감 있고 자연스러운 얼굴 애니메이션이 이루어지도록 한다. 또한 부드러운 얼굴모델을 구현하기 위하여 폴리곤 메쉬를 분할하고 얼굴 표정에 중요한 영향을 미치는 얼굴근육을 추가하여 다양하고 자연스러운 표정을 연출하는 방법을 제시하고자 한다. 제안된 방법을 water〔3〕의 모델에 적용해 봄으로서 더 실감 있는 얼굴 애니메이션에 접근할 수 있는 결과를 얻을 수 있었다. 이 결과는 화상회의나 가상현실, 원격교육, 영화 등 많은 분야에서 활용될 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.07a
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• pp.191-192
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• 2013

안경 산업은 현대사회의 복잡성에 따라 사용자가 매우 가파르게 증가하고 있는 실정이다. 기존 안경 산업은 주로 오프라인에서 사용자의 필요에 따라 사용하는 필요성에 의한 산업구조인 반면에, 최근의 안경 산업은 고객들의 선호도에 따라 다르게 착용함으로써 외적 미모를 위한 개성 연출을 위한 도구로서 활용도가 다양화되고 급증하고 있는 추세이다. 이에 본 연구에서는 젊은층 및 노년층의 구분없이 다양한 계층에서 활용도를 유도할 수 있도록 개인 맞춤형 안경산업의 온라인 사업에 초점을 둔 온라인 안경사이트 구축에 관한 연구이다. 이를 위해서 기존의 대표적인 안경 산업의 특징과 산업 서비스 분석을 통해 차별화된 전략을 제시하고자 한다. 본 연구를 통해 서비스 개발과 실용적인 접목이 이루어진다면 비즈니스 모델의 새로운 가치를 도모할 수 있을 것으로 기대된다.

• Electronics and Telecommunications Trends
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• v.16 no.4 s.70
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• pp.106-112
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• 2001

국제 표준화기구인 ITU는 급변하는 기술 및 시장 흐름에 대응하여 최근 많은 개혁을 추진하고 있으며, 표준화 분야인 ITU-T에서도 이를 반영하여 ITU-T 총회(WTSA-2000)를 통해 이번 회기(2001~2004) 동안 표준화 작업의 근거가 될 ITU 표준화 규정(ITU-T Resolutions, A-Series Recommendations)을 제.개정하였다. 본 고에서는 ITU-T가 신속한 표준화를 위해 전략적 도구로 내세우고 있는 EDH와 관련하여, ITU-T 규정을 고찰하고 지난 2001년 3월 첫번째 회의를 가진 ITU-T 전략 그룹이라 할 수 있는 TSAG 내의 WP3(EDH, Promotion and Publication Policy)에서 논의된 사항을 중심으로 주요 핵심동향을 살펴보고자 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.2
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• pp.1061-1064
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• 2005

본 논문은 현재의 인터넷에서 서비스하기 어려운 HDTV급의 고화질 영상의 다채널 비디오 스트리밍 서비스를 효율적으로 하는 방법에 대해 설명한다. 현재의 인터넷에서는 인터넷의 특성상 다채널스트리밍 서비스가 힘든 상황이며, 이러한 부분을 해결하고자 코덱을 개선하거나 QoS 매커니즘을 적용하는 방법이 제안되고 있다. 하지만 추후 HDTV의 보급확산에 따른 HDTV급의 다채널 스트리밍 서비스는 망의 대역폭 확장만으론 해결하기 힘든 부분이다. 이에 본 논문은 IPv6 프로토콜을 사용하는 차세대인터넷에서 HDTV급의 영상을 다채널로 스트리밍 하는 효율적인 방법을 제시하며, 이를 통해 사용자들은 인터넷망을 통해 다채널의 HDTV급의 영상을 서비스 받을 수 있고, 사용자간에 HDTV 급의 화상회의 도구로도 활용할 수 있게 된다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.2
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• pp.421-429
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• 2010

In this paper we researched the development methods and design of the Ubiquitous Integrated Information System (u-IIS) that makes efficiently access the experts and various kinds of intellectual and material information of the universities. And u-IIS supports various communication and cooperation tools such as VoIP, Email, Unified Messaging, Instant Messaging, Web Conferencing, Audio/Video Communication etc. We gave our focus to the methods and design that makes it possible to effectively implement the u-IIS with the least costs based on the available databases and infrastructures.