• Journal of the Korean Society for Aviation and Aeronautics
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• v.25 no.3
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• pp.18-34
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• 2017

The recent air transportation market is rapidly changing in air and airport infrastructure such as efficiency of airports and airplanes, speeding up and enlargement, deregulation of airline industry, low cost airlines and regional airports. The purpose of this study is to conduct a direct questionnaire survey for airport users who have experienced in and out of airport IT service at Incheon International Airport, so that the airport self - service technology and airport support technology can be used for the trust. At this point, I would like to develop a tool to understand the airport user's perception of airport IT and to test the theoretical model that investigates the relationship between various types of airport IT, airport users' trust, enjoyment and intention to use IT. In conclusion, this study aims to establish directions and suggestions for how to develop IT services among airport service provision factors.

• Journal of the Korean Society for information Management
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• v.32 no.1
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• pp.245-264
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• 2015

This study aims to identify the characteristics of Korean secondary school students in perceptions on and needs to school libraries, and suggest an effective library management directions based on the characteristics. To achieve this purpose, we compare the perceptions on and needs for library elements, such as facilities, collections, programs, etc., between middle school students and high school students, and analyze the differences. Based on the results from the analysis, we suggest to establish an orientation of school library management. We also suggest a need of further study in which differences in the perception and needs among grades in a level of the secondary school for more detailed customization of library services.

• Journal of Institute of Control, Robotics and Systems
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• v.5 no.5
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• pp.614-621
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• 1999

In this paper, the analytical appproaches are presented for jointly determining the profit-miximizing configuration of the fault-tolerance real time modular cell manufacturing system. The transient(time-dependent) analysis of Markovian models is firstly applied to modular cell manufacturing system from a performability viewpoint whose modeling advantage lies in its ability to express the performance that truly matters - the user's perception of it - as well as various performance measures compositely in the context of application. The modular cells are modeled with hybrid decomposition method and then availability measures such as instantaneous availability, interval availability, expected cumulative operational time are evaluated as special cases of performability. In addition to this evaluation, sensitivity analysis of the entire manufacturing system as well as each machining cell is performed, from which the time of a major repair policy and the optimal configuration among the alternative configurations of the system can be determined. Secondly, the recovery policies from the machine failures by computing the minimal number of redundant machines and also from the task failures by computing the minimum number of tasks equipped with detection schemes of task failure and reworked upon failure detection, to meet the timing requirements are optimized. Some numerical examples are presented to demonstrate the effectiveness of the work.

• The Journal of Information Systems
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• v.25 no.2
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• pp.27-50
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• 2016

Purpose The purpose of this study is to examine the effect of the acceptance intention towards healthcare wearable device in Korea. Specifically, this study attempted to identify the relationships among the acceptance intention towards healthcare wearable device, technical characteristics and user's personal characteristic based on UTAUT(Unified Theory of Acceptance and Use of Technology) model. Design/methodology/approach For this purpose of research, we conducted against consumers who use the wearable devices and we collected data from 219 wearable device users. The analyses were conducted using SPSS and AMOS19.0 which is powerful structural equation modeling (SEM) software. Findings The main findings are as followed; First, functional diversity, wearability, trend sensitivity and health perception are significantly related to performance expectancy, while visual aesthetic and enjoyment are not significantly related. Second, performance expectancy and effort expectancy are significantly related to acceptance intention towards healthcare wearable device. Third, effort expectancy is significantly related to performance expectancy.

• Korean Journal of Computational Design and Engineering
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• v.17 no.3
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• pp.208-215
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• 2012

Augmented reality can help to improve user's engineering abilities such as perception and decision making in industry field. Therefore we have studied on the maintenance-supporting applications for inspectors previously. The advantage of pre-existing marker system is that the making and using are easier than any other feature tracking and detection methods. However it must to be exposed to the sufficient light to be detected by computer image processing. The most of industry field is not in clean environment and there are not sufficient light as well. So, the normal marker system is not appropriated for industrial fields. This paper suggests RFID-based marker system to improve marker-detection ability in our AR maintenance system. RFID is not implemented by image processing but it is implemented by electromagnetic induction. Therefore we could more precisely detect markers even if the environment is low-light intensity condition.

• Journal of Korean Society for Quality Management
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• v.44 no.3
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• pp.601-616
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• 2016

Purpose: The purposes of this study are (1) to examine why users commit to M-SNG and (2) to understand what factors impact M-SNG users' enjoyment, motivation and commitment. Methods: We use a questionnaire survey to collect 190 data on users' perception on M-SNG. we also use a structural equation modeling method with Smart PLS 3.0 Results: Playfulness, design aesthetics, competition and social identity are found to be statistically significant factors affecting enjoyment and motivation. Also, enjoyment and motivation are found to be statistically significant factors affecting commitment. Conclusion: We suggest three points of view as game factors, socio-game factors, and social factors. Game factors are more important than other factors. Also, enjoyment is a more powerful factor than motivation in affecting user's commitment to using M-SNG.

• The Journal of Information Systems
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• v.21 no.4
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• pp.55-79
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• 2012

LBS(Location-Based Service) is one of the smartphone application services which has been receiving great attention recently. Various applications of smartphone use LBS to provide innovative services. However, use of LBS raises privacy concerns because the location information of users is constantly exposed. Privacy calculus perspective attempts to understand the characteristics of the user's privacy. It is based on the risk-benefit analysis in the economics' perspective. That is, when the benefit expected through personal information disclosure is higher than risk, we are willing to provide personal information. This research suggested a research model based on the privacy calculus perspective to clarify the effect of information disclosure intention of smartphone LBS application users. Based on the main factors of privacy calculus, perception of privacy risk and privacy benefit, the relationship of the perceived value and the information disclosure intention was empirically analyzed by utilizing structural equation modeling(SEM) methodology. According to the results of the empirical analysis, it was found that all relations have statistically significant explanatory power except the relation between privacy concern and information disclosure intention. This study showed a strong evidence of antecedent factors based on privacy calculus of personal information disclosure in smartphone LBS applications.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.975-978
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• 2004

본 논문에서 우리는 가상현실 시스템의 구축에 있어서, 사용자의 직접 상호작용 (direct interaction)을 기본으로 하는 근신 공간(near-body space) 작업에서 사용자의 존재감 (Presence) 향상과 작업 성능 향상을 위하여, 사용자와 공간적 및 감각적으로 일치된 가상 인체 모델의 구현을 중심으로 현재의 기술 현황 및 연구 개발 방향에 대하여 기술한다. 이상적인 가상현실 시스템을 구현하기 위해서 고려되어야 할 요소를 멀티모달 상호작용과 실감 일치형 인터페이스 개발 방법론의 관점에서 보면, 사용자가 접하는 가상 공간의 시각적 모델(visual perception)과 자기 동작 감각적(proprioceptive) 모델의 일치가 중요하다. 그러므로, 시각적으로 사용자의 움직임과 일치된 자신의 신체가 가시화 되어야 하고, 자연스러운 근신 공간 직접 상호작용을 지원하기 위해서는 사실적인 햅틱 피드백 요소가 중요하며, 공간적 정보를 표현 함에 있어서 동기화 된 사실적 청각 피드백 요소의 지원이 중요하다. 앞의 주요 3 가지 감각 인터페이스 방법(sensory channel, modality)는 현재의 불완전한 인터페이스 기술의 한계를 고려하여 상호 보완적인 관계로 응용 환경에 최적화된 적용 방법이 연구되어야 한다.

• Journal of Korea Multimedia Society
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• v.24 no.4
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• pp.619-627
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• 2021

With growing competition in the market, more product differentiation in visual perception is needed to enhance competitive power of products. The purpose of this paper is to have a research on designer's cognitive differences in aesthetic preferences of female consumers in product CMF design, and the deviation result in different female consumer groups will be obtained based on collected data of CMF design preferences of different female consumer groups. The research method adopted is to conduct matching experiment with professional products designers as participant to test the matching through correlation analysis between designers' cognition of female consumers and their preferences and female consumer preferences on the basis of the constructed typical user roles of female consumers. The results of the research show the correlation between designers' understanding of female consumer groups and their own real needs, and the surface processing of product surface decoration is the highest aesthetic preference of female consumer groups. The research provides reference for product design industry and designers of small and medium-sized enterprises who have substantial difficulty in surface design analysis.

• The Journal of Information Systems
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• v.32 no.1
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• pp.85-108
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• 2023

Purpose The purpose of this study is to identify the role of digital shadow work(DSW) in the psychological mechanism that controls using and purchasing digital device accessories. More specifically, it is to reveal how the digital device user's perception of DSW is formed and how the formed DSW affects purchase and what results it will bring. Design/methodology/approach Ground theory method(GTM), one of qualitative appoaches, is adopted as research methodology. By interviewing total twenty five users, the data are analyzed by open coding amd axis coding. Two core codes are selected by selective coding and interpreted by DSW theory. Findings We find concern for potential DSW and generation of new DSW. Concern for potential DSW lead to the purchase of accessorie which would be supposed to reduce potential DSW. During purchasing accessories, quest type DSW, which provices flow experience and expertise, could be genterated. This means that there would be dynamics of DSW in the purchase process of digital device accessories.