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IT업계에서의 사용성 및 사용자 중심설계에 관한 현황조사
지용구 ( Yong Gu Ji ) 한국감성과학회 2003 추계학술대회 Vol.2003 No.-
This paper reports results of a recent survey of 184 Information Technology(IT) development practitioners and 90 User Interface (UI)/usability practitioners. This survey covered a broad range of issues including the respondents`` profile, current development environment, usability and user-centered design (UCD) adoption issues in development, overall assessment of usability/UCD in Korea, and the most widely used methods and techniques. The results of this study are expected to provide an empirical basis for usability and UCD planning, training, adoption and execution in IT industry of Korea.
모바일 그룹웨어 활용이 업무효율성과 직무만족도에 미치는 영향 연구
지용구(Ji, Yong Gu),정용국(Chung, Yong Kuk) 동국대학교 사회과학연구원 2016 사회과학연구 Vol.23 No.4
본 연구는 스마트워크 환경에서 모바일 그룹웨어의 사용이 업무효율성과 직무만족도에 미치는 영향에 대해 실증적으로 살펴보았다. 선행연구를 기반으로 모바일 그룹웨어의 매체특성으로 편재성, 유용성, 용이성과 정보시스템 특성으로 콘텐츠 접근성, 직무관련성, 정보품질을 도출한 후 각각의 특성이 업무효율성과 직무만족도에 미치는 상대적 영향력의 차이를 살펴보았다. 연구결과, 업무효율성에는 유용성, 콘텐츠 접근성, 정보품질 순으로 유의미한 영향을 미치는 것으로 나타났으며, 직무만족도에는 콘텐츠 접근성, 유용성, 편재성, 직무관련성 순으로 유의미한 영향을 미치는 것으로 조사되었다. 본 연구의 결과를 종합해 보면, 스마트워크의 효과인 업무효율성과 직무만족도를 높이기 위한 수단으로 모바일 그룹웨어의 활용이 적극적으로 검토될 필요성이 있다고 판단된다. In this study, we have investigated whether the introduction of a mobile groupware application to a business environment affects work efficiency and job satisfaction. In particular, we have selected three of media attributes including ubiquity, usefulness, and ease of use and three of information system attributes including content accessibility, job relevance, and information quality. The results of the study found that usefulness, content accessibility, and information quality, respectively, have an association with work efficiency, while content accessibility, usefulness, ubiquity, and work relevance, respectively, is related to job satisfaction. Theoretical and impractical implications and limitations are discussed.
운전자의 정신적 작업 부하 평가를 위한 주관적 측정 기법 내 비교 연구
김지연(Ji Yeon Kim),김선웅(Sunwoong Kim),황보환(Hwan Hwangbo),고상민(Sang Min Ko),지용구(Yong Gu Ji) 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1
1990 년대부터 운전자에게 부가되는 과도한 정신적 요구는 교통 사고의 중요한 원인 중 하나로 부각되고 있다. 또한, 최근 차량 내 정보 기기의 사용과 지능형 자동차로의 변화로 인해 운전자의 정신적 부하의 측정은 매우 중요하게 작용하고 있다. 하지만, 운전자에게 부가되는 정신적 작업 부하의 원인에 관한 연구에 비하여 정신적 작업 부하 측정 기법에 관한 연구는 상대적으로 미흡한 추세이며 그 효용성에 대한 객관적인 연구 역시 부족한 실정이다. 이에 본 연구에서는 운전자의 정신적 작업 부하를 측정할 수 있는 방법론 중 시간/노력의 경제성으로 인하여 가장 보편적으로 이용되고 있는 주관적 측정 방법론을 민감성을 중심으로 가장 효율적인 기법을 제안하고자 한다. 이를 위해 총 19 명의 20-30 대 운전자를 대상으로 모의 주행을 실시함으로써 DALI, NASA-TLX, Bedford scale, ZEIS 를 통한 정신적 작업 부하를 측정하였으며 각 주관적 기법의 비교를 통해 주행 상황에서의 정신적 작업 부하 측정에 가장 효율적인 기법을 도출하였다. 그 결과, 민감성 측면에서 단일 차원(ZEIS, Bedford scale)보다는 다 차원의 기법(NASA-TLX, DALI)이 더욱 정신적 작업 부하 측정에 우세한 것으로 나타났다. Driver's mental workload is considered as one of the most important factor of causing traffic accident. Moreover, recently, the automobile became the smart cat since the use of smart device in automobile has increased. However, the studies of measures for measuring mental workload have been rarely conducted compared to the studies of causes of affecting driver's mental workload. Thus, in this paper we will propose the most effective subjective measure for measuring driver's mental workload in terms of sensitivity. For this, we conducted driving simulation to measure mental workload through DALI, NASA-TLX, Bedford scale and ZEIS. A total of 19 drivers (20-30 years) joined the experiment and the results of experiment were analyzed by comparing subjective measures. The analyzed results showed that multi-dimensional measures (NASA-TLX, DALI) were more effective than uni-dimensional measures (ZEIS, Bedford-scale) in terms of sensitivity.
이지예(Lee, Ji Yea),이주희(Lee, Juhee),장연수(Jang, Yeonsoo),김은채(Kim, Eun Chae),지용구(Ji, Yong Gu),박태준(Park, Taezoon),엄상윤(Um, Sang Yoon),차민철(Cha, Min Chul),김예린(Kim, Yielin) 기본간호학회 2020 기본간호학회지 Vol.27 No.4
Purpose: The purpose of this study was to explore nurses’ experience of falls, and their perception of the status quo of inpatient fall interventions. Methods: The participants were 28 ward nurses in a university hospital, Seoul, Korea. Five focus group interviews and three individual interviews were conducted. The interviews were analyzed using thematic analysis. Results: The findings from this study suggest that nurses face limitations in providing conventional fall interventions due to patient disease related characteristics, situations in hospital, and medical devices used in the hospital settings. Although nurses adopted their own strategies to prevent falls effectively, they expressed the need for innovative approaches to overcome these limitations. Conclusion: Systematic, technology-based approaches are needed to create a safer physical environment and to improve current nursing interventions to prevent falls.
QFD를 이용한 식기세척기의 감성기반 사용성 평가 연구
진범석,최계연,지용구,조길수,김경록,이창희,Jin, Beom-Suk,Cho, Kye-Youn,Ji, Yong-Gu,Cho, Gil-Soo,Kim, Gyoung-Rok,Lee, Chang-Hui 대한인간공학회 2007 大韓人間工學會誌 Vol.26 No.3
This research is for developing a usability evaluation model based on customer sensation using Quality Function Deployment, which evaluates the relationship between consumer sensation and usability among the physical design factors of dishwashers. Four aspects of the evaluation model; overall sensation factors, detail sensation factors, usability evaluation factors and physical design factors of products were analyzed in three sequential processes of QFD. The sensation evaluation factors and the usability evaluation factors were created from regression analysis of the results of the sensation and usability test. Moreover, thirty-one physical design factors selected through group discussion of ergonomist and manufacturers. Among them, 19 physical design factors according to priority were applied to evaluation model using QFD. With the evaluation model using four aspects, physical design factors influencing user sensation were generated. These factors were 'alarm sound', 'dishwasher size', 'button size' and 'display size'. Consequently, the degree of influences was tested. Design guidelines for dishwashers were derived from finally generated physical design factors.
소셜 네트워크 서비스의 사회 연결망 시각화에 대한 연구
최종규(Jong Kyu Choi),지용구(Yong Gu Ji) 대한인간공학회 2010 대한인간공학회 학술대회논문집 Vol.2010 No.5
Web 2.0 has started to make a user-centered environment which users can make and share data easily. Various type of opened and participatable social network services using Web 2.0; are serviced and the researches focused on relation among Social Network Services are conducted. Social Network means the network and every relation among people, and it is made of social relations and interactions. Social network services support tools to connect user or context information, so peoples are using it to communicate each other and sharing information as a new communication method. In online environment, social network is developed easily but more complex than offline environment. Social Network Analysis is the research to clarify relation or network of people. Also Social Network Analysis can be visualized. Social Network Analysis is using widely to reveal the relation clearly, and visualized information of Social Network Analysis helps to understand social network directly, and categorization of data makes effective information sharing in limited space. Visualization of social network in social network service also has problems. First, as time goes by social network in online environment is going to be more complex, so analysis of social network will be harder than offline environment. Second, accumulated single communication data of social network is not enough information to understand social network in online. Third, researcher can be confused of many temporary networks. To solve the problems, based on analysis of various visualized application, the social networks is visualized using timeline. In this paper, we measured user satisfaction of application using timeline. We studied visualization problem of social network in social network service, and visualized analysis using timeline. It will help to understand social network’s formation, maintain and development.