• 한국콘텐츠학회논문지
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• 제19권5호
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• pp.249-258
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• 2019

현재는 스마트 홈 사업에 대한 사람들의 관심이 증가하고 있다. 따라서 스마트 홈 시스템에 대하여 연구가 중요해지고 있다. 스마트 홈 시스템에서 중요한 구성 부분인 스마트 홈 앱은 지속적으로 관심을 위해서는 사용성을 고려한 평가지표 개발이 중요하다. 이에 본 논문은 스마트 홈 앱을 대상으로 스마트 홈 앱 디자인의 사용성 평가지표 개발하고자 하는데 있다. 본 연구를 위하여 델파이 기법을 이용하여 3차에 걸쳐 조사를 실시하였다. 1차 조사에서는 문헌고찰을 통해 도출된 평가 영역에 대한 전문가들의 의견을 수렴하고 내용타당도 비율(CVR) 값을 분석하여 적절한 영역 8개를 선정하였다. 1차 조사 결과를 바탕으로 국내외 선행연구와 사용자 인터뷰 조사를 통해 총 38개 평가 항목을 수집하였다. 수집된 38개 평가 항목은 2, 3차에서 평균(M), 표준편차(SD), 내용타당도 비율(CVR), 합의도(H), 수렴도(QD) 등을 분석하고 최종 8개 영역 하위에 포함된 27개 항목을 선정되었다. 본 연구 결과는 스마트 홈 앱 디자인의 사용성 평가 시 가이드라인으로 활용될 수 있다.

• Physical Therapy Rehabilitation Science
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• 제11권4호
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• pp.414-420
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• 2022

Objective: In this study, the test-retest reliability and validity were presented to evaluate the usability of isokinetic rehabilitation equipment for the knee joint. Design: Cross-sectional design, reliability & validity study. Methods: Thirty healthy adults participated in the study. A CSMI dynamometer was used as a standardized measuring device to present the validity of the equipment. It was measured based on the dominant leg. The average peak torque value was selected as the measurement variable. After the measurement, a questionnaire was conducted on safety, satisfaction, and performance through the usability evaluation questionnaire. Results: The knee joint isokinetic rehabilitation equipment showed high reliability with Intraclass Correlations Coefficients (ICC) =0.883~0.956. In order to check the validity of the equipment, the 95% confidence interval of the mean difference limit was confirmed by the Bland & Altman plot. As a result, all three angular velocities showed a smaller confidence interval in the flexion than in extension. There were less than 10 plots that were not included in 2 Standard Deviation (SD) between all measurements. As a result of the usability evaluation questionnaire, the average of the safety domain(4.9±0.4), satisfaction domain(4.1±0.8), performance domain(4.3±0.8). Conclusions: If the product is improved by supplementing the items identified in the usability evaluation process, it is judged that it can be used as a useful device in various knee joint rehabilitation fields.

• 기술혁신학회지
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• 제21권2호
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• pp.684-714
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• 2018

스마트워치의 확산이 예상과는 달리 더디게 진행되고 있다. 스마트워치 공급업체들은 현재의 캐즘을 극복하기 위해 새로운 전략을 수립할 필요가 있다. 그러나 스마트워치의 어떠한 속성을 전략적으로 활용하여 시장 확산을 이루어야 하는가를 타당하게 수행한 연구는 매우 드물다. 본 연구는 스마트워치가 가져다줄 것으로 예상되는 혜택과 이를 위해 치러야 할 비용을 소비자 관점에서 분석하고, 소비자의 혁신성향이 시장 확산에 기여할 수 있는지를 살펴보았다. 이를 위해 323개의 유효데이터를 확보하여 구조 방정식 분석을 실시하였다. 분석 결과, 스마트워치의 두 가지 혜택(utilitarian and hedonic)과 세 가지 비용(usability, performance, and finance)이 가치인식을 통해 사용의도에 영향을 주는 것으로 나타났다. 또한 소비자의 혁신성향이 가치인식과 사용의도의 관계를 조절하는 것으로 드러났다. 주목할 점은, 소비자들이 스마트워치가 사회적 혜택을 가져다 줄 것으로 기대할 것이라는 가설이 기각되었다는 점이다. 즉, 스마트워치 사용이 소비자에게 이미지 향상을 가져다 줄 것이라는 전략은 스마트워치 확산에 큰 기여를 하지 않을 수 있다. 스마트워치의 시장 확산을 이루기 위해서는 혁신성향이 높은 소비자들을 대상으로 소비자들이 기대하는 혜택을 활용하는 전략을 수립해야 한다.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2007년도 한국지능정보시스템학회
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• pp.229-238
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• 2007

This study was intended to point out the limit of existing digital content-centered studies, or approaches from the viewpoint of the supplier and in the aspect of business profit model and find ways to assess the quality of digital content, considering the characteristics of digital content. For this, the study is to apply value innovation strategy to digital content assessment, to analyze the applicability, and to propose a new and practical framework for digital content assessment method. To this end, this study selected the global No. 1 search service provider Google and local portal site Naver search service. The study on assessment factors by value innovation strategy was based on existing literature, while user-value elements in that respect were confined to information quality, interactivity, communication, interactive storytelling, and usability. This study objectified the relation with the value innovation strategic analysis, through qualitative and quantitative analyses on value elements of search service users.

• 대한인간공학회지
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• 제35권6호
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• pp.519-533
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• 2016

Objective: This study lays its aims at the definition of relevant operation method and function by researching on the value to be brought when applying smart device that can hand carry soft and flexible materials like jelly. Background: New technology and material play a role in bringing type transformation of interface and change of operation system. Recently, importance has been increased on the study of Organic User Interface (OUI) that conducts research on the value of new method of input and output adopting soft and flexible materials for various instruments. Method: For fulfillment of the study, 27 kinds of gestures have been defined that are usable in handheld device based on existing studies. Quantitative research of survey was conducted of adult male and female of 20s through 30s and an analysis was done on the function that can be linked to gestures with highest level of satisfaction. In order to analyze needs and hurdles of users for the defined gesture, a focus group interview was conducted aiming at the groups of early adopters and ordinary users. Results: As a result, it was found that users have much value regarding usability and fun for elastic device and analysis could be conducted on preferred gesture and its linkable functions. Conclusion: What is most significant with this study is that it sheds new light on the values of a device made of elastic material. Beyond finding and defining the gestures and functions that can be applied to a handheld elastic device, the present study identified the value elements of an elastic device - 'usability and 'fun' -, which users can basically desire from using it. Application: The data that this study brought forth through preference and satisfaction test with the gestures and associated functions will help commercialize an elastic device in future.

• 한국게임학회 논문지
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• 제15권1호
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• pp.145-154
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• 2015

본 연구의 목적은 노인의 신체적 정신적 건강 향상을 위해 개발된 기능성 게임인 '팔도강산3'의 사용성을 검증하고자 한 것이다. 본 게임기계를 1달간 양로원에 설치한 후 노인들이 자율적으로 실험에 참여하도록 하였으며, 참여를 독려하기 위해 3차례의 대회를 치루면서 게임 내 플레이 정보저장과 함께 연구자의 관찰, 설문 및 면담을 통해 자료를 수집하였다. 8명이 참여하였으며, 조작편의성, 조작방식의 학습성, 기억성, 도전감 등의 연구결과는 프로그램 적용 전후 통계적인 유의한 차이를 나타내지 못하였으나 대부분의 대상자가 지적 장애를 비롯하여 인지기능저하가 있었음에도 적용 기간 동안 매일 2-3회씩 참여하였다. 면담 결과 주관적인 만족감이 표현됨으로써, 추후 본 프로그램의 적용 확대 가능성을 확인하는데 그 의의를 찾을 수 있었다.

• 디지털융복합연구
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• 제15권4호
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• pp.443-449
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• 2017

스마트폰 사용이 대중화되어감으로써 스마트폰을 중심으로 형성되고 있는 스마트미디어환경은 새로운 생태계를 구축하고 있다. 본 연구는 스마트폰과 애플리케이션의 보급과 사용이 증가함에 따라서 오프라인에서 온라인화되어가는 요소들의 사용성을 평가하고 지속사용요소들을 알아보는 데 목적이 있다. 이를 위해 애플리케이션 사용성 비교에 관한 선행연구들을 분석하여 가설을 설정하고, 대표적인 캘린더 애플리케이션인 iCloud 캘린더와 네이버 캘린더의 사용성을 평가하기 위해 스마트폰 사용자들을 대상으로 두 캘린더 애플리케이션의 심층인터뷰를 시행하고 태스크 수행시간을 분석하여 설정한 가설을 분석하였다. 설정한 가설을 검증하며 심미성에 중점을 두는 사용자는 어떤 요소를 중요시하는지, 사용성과 실용성에 중점을 두는 사용자는 어떤 요소를 중요시하는지 형태별로 분석하였다. 향후 애플리케이션 개발의 '실패와 성공' 요소를 분석하여 향후 다른 온라인화가 되어가는 콘텐츠의 성공적인 발전을 위해 본 연구를 진행하게 되었다.

• Physical Therapy Rehabilitation Science
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• 제12권2호
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• pp.105-114
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• 2023

Objective: The study examined the validity and reliability of tele-assessment of cervical range of motion (ROM) through video conferencing. Design: A cross-sectional study Methods: The study included 22 healthy adults as subjects and 10 physical therapists as evaluators. The subjects underwent both face-to-face and tele-assessment of cervical ROM. The CROM (Cervical Range of Motion) device was used for reference measurements in the face-to-face assessment. The evaluators assessed the subjects' ROM through visual inspection (VI) and using a Universal Goniometer (UG) in the tele-assessment. Results: The results showed a significant correlation between the face-to-face and tele-assessment measurements for all ROM contents. The correlation coefficients ranged from r=0.54 to 0.71 (p<0.05), indicating concurrent validity. In terms of inter-rater reliability, the ICC values for both VI and UG assessments in the tele-assessment were high, with ICCs of 0.93 and 0.92, respectively. Additionally, the study investigated the usability of the tele-assessment method and environment. The satisfaction of the participants and evaluators was assessed using the Telehealth Usability Questionnaire (TUQ), which evaluates perceptions, usability, and satisfaction with telehealth services. Conclusions: In conclusion, tele-assessment of cervical range of motion using video conferencing was valid and reliable. Also, investigated participant and evaluator satisfaction and opinions, providing insights into the clinical value of tele-assessment. It is important to note that the study was conducted only healthy adults, and further research may be needed to validate the tele-assessment method in populations with cervical dysfunction or neck pain. These findings support the potential effectiveness of telerehabilitation services in assessing and managing musculoskeletal disorders.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제18권2호
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• pp.397-419
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• 2024

Online learning has become a widespread practice for students and teachers in acquiring and delivering knowledge. Education platforms have become prominent in the 21st century with the evolution of technology and the accessibility to online learning. As a result, various learning management systems (LMSs) have been introduced to facilitate online interaction between users. For instance, communication between students and teachers at school. However, there is a need to emphasise user engagement in LMS to enhance the online learning experience amongst students since the design of LMS affects user engagement. This study utilised a systematic literature review (SLR) that examined 74 articles published between 2014 and 2023, focusing on cross-cultural design (CCD), user-centred design (UCD), and usability in LMS design. This study aimed to review CCD and its association with UCD, user interfaces (UI), and user experience (UX) in the context of LMS. CCD has been introduced as an approach to design that embraces different cultures, languages, and social contexts, while UCD plays a significant role in defining user engagement for LMS. All elements in CCD and UCD help create a better user experience for LMS. Besides, this study reviewed the usability of selected LMS to give insights to developers in creating a positive user engagement. An insight into cultural factors that influence the usability of LMS has revealed their value for LMS design, such as the UI/UX elements. Initially, this study may guide future researchers in improving education quality by emphasising CCD and LMS usability, which can enhance user engagement.

• 유통과학연구
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• 제12권9호
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• pp.65-72
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• 2014

Purpose - This study aims to provide a brief understanding of usability and its extended models with TAM as well as identifying additional determinants that had been suggested in previous studies on mobile services. Research design, data, and methodology - Empirical data were collected by conducting a field survey of potential mobile application service users. The call for participation was also made in mobile related application issues, which were widely discussed. Result - The ease of use and usefulness had a significantly positive influence on attitude and intention. It also was revealed that added value services can offer practical value to customers. Thus, positive attitudes toward the adoption of services by customers are present when they perceive higher usefulness and ease of use of mobile application services. Conclusion - It was indicated that customers who are more inclined to try new products or who have a higher demand for new things tend to think about those functionalities and added value mobile application services from the perspective of usefulness and ease of use and operation.