• Journal of the Ergonomics Society of Korea
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• v.36 no.4
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• pp.267-280
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• 2017

Objective: The aim of this study is to investigate key user experience factors of interactions for Head Mounted Display (HMD) devices in the Virtual Reality Environment (VRE). Background: Virtual reality interaction research has been conducted steadily, while interaction methods and virtual reality devices have improved. Recently, all of the virtual reality devices are head mounted display based ones. Also, HMD-based interaction types include Remote Controller, Head Tracking, and Hand Gesture. However, there is few study on usability evaluation of virtual reality. Especially, the usability of HMD-based virtual reality was not investigated. Therefore, it is necessary to study the usability of HMD-based virtual reality. Method: HMD-based VR devices released recently have only three interaction types, 'Remote Controller', 'Head Tracking', and 'Hand Gesture'. We search 113 types of research to check the user experience factors or evaluation scales by interaction type. Finally, the key user experience factors or relevant evaluation scales are summarized considering the frequency used in the studies. Results: There are various key user experience factors by each interaction type. First, Remote controller's key user experience factors are 'Ease of learning', 'Ease of use', 'Satisfaction', 'Effectiveness', and 'Efficiency'. Also, Head tracking's key user experience factors are 'Sickness', 'Immersion', 'Intuitiveness', 'Stress', 'Fatigue', and 'Ease of learning'. Finally, Hand gesture's key user experience factors are 'Ease of learning', 'Ease of use', 'Feedback', 'Consistent', 'Simple', 'Natural', 'Efficiency', 'Responsiveness', 'Usefulness', 'Intuitiveness', and 'Adaptability'. Conclusion: We identified key user experience factors for each interaction type through literature review. However, we did not consider objective measures because each study adopted different performance factors. Application: The results of this study can be used when evaluating HMD-based interactions in virtual reality in terms of usability.

• Journal of the HCI Society of Korea
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• v.13 no.4
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• pp.25-34
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• 2018

This study is a literature study that analyzes empirical case study of Flipped learning application which has emerged as a method of future university education in Korea. The purpose of the study is to explore the use of digital media by learners in the Flipped learning applied courses in domestic universities considering current digital-based media environment. For this purpose, we analyzed the measurement variables and statistical significance of the preceding studies and analyzed the media utilization. The most important measurement variables were 'learning achievement' and 'class satisfaction', which were measures of effectiveness on the Flipped learning classes. All studies analyzed used media, but most studies focused on verifying the effectiveness of classroom classes, resulting in separate media utilization measurements in one study and statistically meaningful results for the 'video learning recognition' variable. The qualitative measurement related to the use of media for each study was presented as a separate analysis result. In the future, in order for effective follow-up studies on application of Flipped learning and digital media utilization, there are five main issues that need to be studied, which are securing the necessary treatment period for accurate effect measurement, etc.

• Korean Journal of Environment and Ecology
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• v.22 no.3
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• pp.325-331
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• 2008

This study was designed to provide basic visitor information for establishing effective visitor management strategies. A questionnaire survey was carried on at major entry points(Dobong district) in Bukhansan National Park. 239 random samples of visitor were chosen to represent general visitor population. As for the results from comparing other studies, some differences of demographic characteristics(age, income, occupation etc.) and use patterns(purpose, group types etc.) exist. Total visitors' satisfaction level with the area was relatively high. However, negative impacts on the trails and trash problem by increasing visitor numbers due to abrogating admission fee were indicated as the managerial priority in Bukhansan National Park.

• Journal of Information Technology Services
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• v.20 no.4
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• pp.95-111
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• 2021

Recently, many organizations are actively adopting VDI (Virtual Desktop Infrastructure), an IT-based business system, to build a non-face-to-face business environment for smart-work. However, most of the existing research on VDI has focused on the satisfaction of system service quality or the use of IT resources and investment for VDI introduction. However, research on effective management and utilization of factors according to the characteristics of VDI technology is urgently required. This study is an empirical research study on how VDI technology characteristics affect interactions and work performance by identifying differences in utilization factors between general organization members and IT managers, presenting standards for business utilization and management. This study proposed a model and hypothesis that the system technology characteristics for VDI use are mediated by interactions in which users respond to functions appropriate to their work. In order to verify the hypothesis, a questionnaire survey was conducted on 188 people of companies and institutions that have adopted and used VDI through a questionnaire survey. Data analysis was performed with partial least squares (PLS), a structural equation modeling (SEM) technique that uses a component-based approach to estimation. As a result of the empirical analysis, the same environmental function for performing work, N-th security, and remote access function factors for non-face-to-face work have a significant effect on interactivity, and IT managers have an additional significant effect on the management technology characteristics of resource reallocation. Has been shown to affect. The results of this study aim to minimize trial and error due to new introduction by presenting considerations for future VDI introduction through case analysis.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.4 no.1
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• pp.21-33
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• 1998

This Evaluation was made through 300 persons who had attended the lecture organized by O. M. P. T. (Orthopeadic Manual Physical Therapy) during the period of January to June 1998 in Seoul and in other six(6) cities. The result of evaluation is summarized as follows : 1. With regard to general satisfaction with lecture, it was evaluated as 'more than good 'by 204 person(68.0%) for 'Preparation for lecture of lecturer' and by 194 person (64.7%) for 'Teaching Method'. Statistically, the significance was largely given to 'Place and Preparation for Lecture of Lecturer' and 'Preparation for Lecture as per each Lecturer' (P< 0.001). 2. With regard to understanding of lecture, it was evaluated as 'more then good' by 190 persons(63.3%) for 'Appropriate Teaching Hours' and by 149 persons(49.7%) for 'Appropriate Degree of Lecture Difficulties'. Statistically, the significance was largely given to 'Lecturer and Appropriateness of Teaching Hours' (P< 0.05) and 'Appropriateness of Teaching Courses and Degree of Lecture Difficulties' (P< 0.01). 3. With regard to satisfaction with lecture's performance, it was evaluated as 'more than good' by 194 persons(64.7%) for 'Lecturer's Zeal for Teaching' and by 198 persons(66.8%) for 'Suitability of Textbook'. Statistically, the significance was largely given to 'Sex Distinction and Lectuer's Zeal for Teaching' (P< 0.01) and 'Lecturer and Suitability of Textbook' (P< 0.05). 4. With regard to teaching environment, it was evaluated as 'more than good' by 102 persons(37.4%) for 'Appropriateness of Teaching Environment' and by 193 persons(64.3%) for 'Provision of Appropriate Audio-Visual Aids for Teaching'. Statistically, the significance was largely given to 'Place and Appropriateness of audio-visual aids for Teaching' (P<0.05). 5. With regard to parctical use of lecture, it was evaluated as 'more than good' by 172 persons(54.7%) for 'Usefulness to clinical demonstration' and by 209 person(69.6%) for 'Attitude towards study'. With the result of evaluation made as in the above, we are able to see that the education of orthopedic physical therapy which is organized by Orthpedic Physical Therapy Society of Korea, is being successfully conducted and evaluated by its members, and furthermore the staff of this society has to make his best endeavoures for the growth of this society and for the development of this education.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.5 no.1
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• pp.27-38
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• 1999

This evaluation was made through 1219 persons who had attended the lecture organized by O.M.T.( Orthopeadic Manual Therapy ) during the period of January to December 1998 in Seoul and in other 11 cities. The result of evaluation is summarized as follows : 1. With regard to general satisfaction with lecture, it was evaluated as 'more than good 'by 919 person(75.6%) for Preparation for lecture of lecturer' and by 969 person (71.4%) for 'Teaching Method'. Statistically, the significance was largely given to 'Couse and Preparation for Lecture of Lecturer' and 'Preparation for Lecture as per each Lecturer' (P< 0.001). 2. With regard to understanding of lecture, it was evaluated as 'more then good' by 675 persons(55.4%) for 'Appropriate Degree of Lecture Difficulties'. Statistically, the significance was largely given to 'Appropriateness of Teaching Courses and Degree of Lecture Difficulties' (P< 0.001). Degree of Lecture Difficulties' (P< 0.001). 3. With regard to satisfaction with lecture's performance, it was evaluated as 'more than good' by 969 persons (87.7%) for 'Lecturer's Zeal for Teaching" and by 751 persons(61.6%) for 'Suitability of Textbook'. Statistically, the significance was largely given to 'Sex Distinction and Lectuer's Zeal for Teaching' (P< 0.001) and 'Lecturer and Suitability of Textbook' (P< 0.001). 4. With regard to teaching environment, it was evaluated as 'more than good' by 464 persons(38.2%) for 'Appropriateness of Teaching Environment' and by 751 persons(61.8%) for 'provision of Appropriate Audio-Visual Aids for Teaching', Statistically, the significance was largely given to 'place and Appropriateness of audio-visual aids for Teaching' (P< 0.001). 5. With regard to parctical use of lecture, it was evaluated as 'more than good' by 805 persons(67.5%) for 'Usefulness to clinical demonstration' and by 873 person(71.7%) for 'Attitude towards study'. With the result of evaluation made as in the above, we are able to see that the education of orthopedic physical therapy which is organized by Orthpedic Physical Therapy Society of Korea, is being successfully conducted and evaluated by its members, and furthermore the staff of this society has to make his best endeavoures for the growth of this society and for the development of this education.

• Journal of Information Technology Services
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• v.21 no.2
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• pp.27-41
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• 2022

In a fiercely competitive environment, quality is a key factor that enables dashboard camera makers to maintain their competitive advantage. Quality affects consumer satisfaction, brand loyalty, and firm performance. Therefore, to remain competitive, it is important that manufacturers maintain product quality that meets consumer expectations. To this end, it is necessary to investigate customer preferences and product performance in terms of product quality and to properly allocate resources to improve the quality level such that the firm can maintain a competitive advantage. In this paper, we proposed the various ways in which manufacturing firms can determine which quality dimensions need improvement in order to secure competitiveness. To this end, we analyzed a case study of Urive to develop a quality improvement strategy through importance performance competitor analysis (IPCA). Urive's IPCA results showed that 14 quality dimensions, namely performance, size, price, ease of use, country of origin, manufacturer, brand, product certificate, warranty, distribution channel, market share, reliability, durability, and conformance, were not absolutely competitive compared with those of Mando, Inavi, and Finevu. In terms of color, Urive had an absolute competitive advantage over Mando, but not Inavi and Finevu. Urive's appearance was more competitive than Mando's, but not Inavi's and Finevu's. In terms of advertisement and serviceability, Urive was absolutely less competitive than Mando and Inavi, but had a competitive advantage over Finevu. Therefore, it is necessary to put resources and time as the first priority for performance, reliability, and durability, which have a large performance difference in common among the three brands. The quality dimensions in which resources and time need to be put in second place are price and ease of use, which have a large performance difference in common among the two brands.

• Smart Media Journal
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• v.12 no.8
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• pp.60-68
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• 2023

After COVID-19, hotel industry is rapidly experiencing changes in the business environment, and under the influence of the Fourth Industrial Revolution, hotel industry is striving to secure competitive advantages through differentiation, including the use of big data and the IoT in service provision, as well as the introduction of artificial intelligence(AI) robot services. This study analyzed the perceived value of AI robot services and their impact on usage attitudes and behavioral intentions of customers who have used hotels that have introduced AI robot services. The results of the study showed that the value of robot services perceived by customers who have used robot services in hotels is categorized into three dimensions: social, experiential, and functional, and all of them have a positive effect on usage attitudes, with social, functional, and experiential values having a positive effect on usage attitudes in that order. Attitude toward use was also analyzed to have a positive effect on behavioral intention, which is consistent with the value-attitude-behavior model. Therefore, it is necessary for hotels to improve the satisfaction of hotel guests through diversified services of AI robot service.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.3
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• pp.133-141
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• 2012

Service and manufacturing companies' efforts are increasingly focused on utilizing services to satisfy customers' needs and survive in today's competitive market environment. The value of services depends mainly on service reliability that is identified by satisfaction derived from the relationship between customer and service provider. In this paper, we extend concepts from the failure modes and effects analysis of tangible systems to services. We use an event-based process model to facilitate service design and represent the relationships between functions and failures in a service. The objective of this research is to propose a method for evaluating service reliability based on service processes using fuzzy failure mode effects analysis (FMEA) and grey theory. We define the failure mode of service as interaction ways that can be failed in a service delivery process. The fuzzy set theory is used to characterize service reliability based on linguistic terms during FMEA. Grey theory is employed to determine the degree of relation and ranking among risk factors that are represented as potential failure causes. To demonstrate implementation of the proposed method, we use a case study involving a typical automotive service operation.

• Information Systems Review
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• v.9 no.2
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• pp.189-207
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• 2007

The importance of IT service management to improve the effectiveness and efficiency of IT outsourcing practices or performance has been emphasized in the fields. Accordingly, several methodologies of IT service management have been adopted in a fashion. This case based research tries to analyze the effects of ITIL-based IT service management practice in a company on IT outsourcing performance. The case analysis shows that ITIL-based service management influences systems quality, information quality, and service quality in direct manner. But it does not influence systems use and systems satisfaction in a meaningful way. This study would help IT service managers construct IT service environment which improves the performance of IT outsourcing service delivery and also researchers set up research proposition in a concise way in the future.