• Journal of Digital Convergence
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• v.17 no.5
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• pp.379-384
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• 2019

The purpose of this study is to investigate the problems of the rapidly increasing voice interface and to find out what results will be obtained when the new gesture interaction is applied to the product, and to suggest the improvement method for a better user experience. Through the literature review, I have conducted a theoretical review on the changes in the product interface used in the product and the difference between them, and then conducted in-depth interviews on the 20-30 users who used voice recognition as a product trigger. As a result, it was concluded that the decline in the reliability of accuracy leads to a decrease in the preference of voice recognition interactions and an needs of appropriate interface for the functional aspect of non-relavancy in physical distance as a product trigger. This study is meaningful in that it has found a problem with the study of the product trigger interface and suggested improvement measures, and hope to be helpful in follow-up study.

• Journal of Broadcast Engineering
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• v.24 no.2
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• pp.341-352
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• 2019

The inconvenience of using the product weakens the competitiveness of the product and makes it difficult to obtain various users. This study proposes a 5-step evaluation method that is derived from a formal usability evaluation to suggest improvement directions for easier and more convenient manipulation of complex or inconvenient user interface. The 5-step usability evaluation method can not be applied to all broadcasting equipments, but it is expected to improve the user interface of broadcasting equipments. In addition, it is expected to provide an opportunity to more flexible access to user interface development to be applied to new application services in a variety of telecommunication convergence equipment industry, while leading the era of convergence of broadcasting industry throughout broadcasting equipment industry.

• Journal of Digital Convergence
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• v.19 no.6
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• pp.343-353
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• 2021

The beauty industry of China POP-UP store service, has entered the peak development period. This paper takes China Estee Lauder POP-UP store as an example, based on the user experience of interactive marketing mode in Beauty POP-UP store under the new retailing model. The paper aims to establish a system interaction design process integrating online and offline to help enterprises complete the sustainable development of marketing services. To achieve this goal, this study uses questionnaires to investigate the key elements of user experience, customer journey map to determine the user pain points, and completes the design of the new system process. This process can provide designers with a new perspective through experimental verification, with high timeliness and practicability. It also promotes the collaborative optimisation and upgrading of physical retail and online retail and provides theoretical support and practical basis for other enterprises.

• The Journal of the Korea Contents Association
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• v.21 no.4
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• pp.111-122
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• 2021

This study analyzed user reviews of Dongbaekjeon and Incheoneum app, which are representative local currencies in Korea, to identify the positive/negative factors of local currency users, and established a marketing strategy based on this. App user reviews were classified into positive and negative based on the star rating, and word cloud, topic modeling, and social network analysis were performed, respectively. As a result, in the negative reviews of Dongbaekjeon and Incheoneum, dissatisfaction with app use and card issuance appeared in common. In positive reviews, keywords such as 'local economy' and 'small business owners' along with satisfaction with 'cashback' appeared. It means that local currency users perceived that their consumption support local economy, and they felt satisfaction in using local currency. Based on the satisfaction/dissatisfaction factors identified as a result of the analysis of this study, we identified what needs to be improved and to be strengthened, and appropriate marketing strategies were established. The text mining method used in this study and research results can provide meaningful information about local currencies to public officials and marketers in charge of local currencies.

• Archives of design research
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• v.16 no.3
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• pp.191-200
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• 2003

This paper summarizes the characters of virtual reality contents and its design problems, and suggests user centered approach in design methodology of VR contents. Based on case study of former VR contents design project, I developed a new VR contents design process in experience design perspective. This design process was applied on Tangible Space Initiative project of KIST, which showed positive roles of this design process as a dear communication media between project players, and an active generator of user-centered interaction design.

• Journal of Korea Society of Industrial Information Systems
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• v.4 no.3
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• pp.59-70
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• 1999

Scholars and researcher have carried out many studies attempting to measure the user satisfaction as the performance variable of information system. However, the theoretical investigation has not been clearly conducted due to the differences in concepts, variables, and methods in measurement. Thus, it is important to examine the causes of differences and to suggest to conceptual model. First, an extensive review of the previous studies is presented to identify the concepts, methods, and the limitations. Second, the implications of the literature review are discussed. Third, based on the implications, the conceptual model of evaluation of information system composed of the factors influencing user satisfaction is suggested. This model analyzes the explicit interrelationship between the influencing factors (independent variable) and the measuring factors (dependent variable). The model also assesses the correlation and the relative importance among the independent variables.

• Journal of Satellite, Information and Communications
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• v.10 no.2
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• pp.10-13
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• 2015

This paper proposed a novel user's information feedback algorithm for improving network energy harvesting rate. The proposed algorithm is focused on determining energy harvesting users comparing increasing ratio of the amount of harvesting energy versus emitted energy and network threshold ${\alpha}$, which is critical harvesting parameter. Using this method, we can increase the rate of network energy harvesting preventing emitted energy from wasting inefficiently. The result of experiment in this paper shows that user's information feedback algorithm makes network energy harvesting rate more efficiently when it uses threshold ${\alpha}=15%$ to determine energy harvesting users.

• Journal of Convergence Society for SMB
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• v.5 no.3
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• pp.15-20
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• 2015

There have been consumer needs for mobile payment system due to the rapid increase in the number of smartphones and the use of them. In tum, the market has been expanding as IT companies begin to participate in the mobile payment system business. Moreover, since the system supports better services not only covering payment service but also interworking with various apps in devices, it has been maximizing the consumer convenience. Although the convenience increased due to the mobile payment system, the vulnerability in security also increased; and smartphone users have been afraid of using the mobile payment system. This study is to examine Samsung Pay and Apple Pay, to present the vulnerability, and to suggest a countermeasure.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.45 no.4
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• pp.22-31
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• 2008

In this paper, we propose a new approach for efficient multiview stereo matching and virtual view generation, which are key technologies for 3DTV. We propose semi N-view & N-depth framework to estimate disparity maps efficiently and correctly. This framework reduces the redundancy on disparity estimation by using the information of neighboring views. The proposed method provides a user 2D/3D freeview video, and the user can select 2D/3D modes of freeview video. Experimental results show that the proposed method yields the accurate disparity maps and the synthesized novel view is satisfactory enough to provide user seamless freeview videos.

• Proceedings of the Korea Contents Association Conference
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• 2004.05a
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• pp.377-384
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• 2004

The field based morphing requires the user to set most of the control lines manually which requires much time and skill to get satisfactory results. This thesis proposes a method to acquire semi-automation of image morphing through first acquiring shape information from the source image and the target image, then after the user manually designates the least amount of a pair of feature points, these are used as standards for polygon based vertex search to set the appropriate control line to the source mage and target image, and then using the ratio of control line lengths and space. Using the proposed method, the user can reduce the time setting the control line and unskilled persons can get natural image morphing results while designating the least amount control line.