• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.6
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• pp.1297-1307
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• 2018

The rise of Online game ESD(Electronic Software Distribution) like Steam, the method of game piracy are more diversified. In Online Game ESD, Software DRM is applied to game because we have to play in offline situation, but it is easily bypassed due to low security level. In this study, we analyze crack files of pirated games to learn how to bypass Steam DRM and to establish countermeasures for based on API call birthmark. The generated birthmark showed more than 85% resilience in representing crack groups and 95% credibility in detecting cracked games. With this study, it is possible to enhance the security of the online game Electronic Software Distribution platform, and to provide a high level of game piracy protection for indie game developers, especially those who can not purchase Third Party DRM to protect their own games.

• Journal of Distribution Science
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• v.19 no.2
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• pp.37-44
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• 2021

Purpose: O2O (Online to Offline) is an internet-based platform. The purpose of this study is to confirm the effect of service quality of O2O food delivery service on service satisfaction, and whether customer orientation mediates the relationship between service quality and service satisfaction. Research design, data and methodology: This paper surveyed Chinese consumers using the O2O food delivery platform through a questionnaire technique. Smart PLS 3.0 was used to verify the hypothesis of this study. PLS is characterized by the advantage of minimizing measurement errors and maximizing the influence of each factor. Results: It was confirmed that O2O food delivery companies need to increase service quality (information quality, product quality, and social quality, system quality) in order to obtain customer satisfaction. Additionally, the perceived customer orientation was found to completely mediate the relationship between perceived service quality (information quality, product quality) and perceived service satisfaction. Conclusions: The service level of the O2O delivery company to the customer's request when a problem occurs in the customer's order must be raised to increase the customer's satisfaction. For example, timely response to customer inquiries and timely feedback of delivery information to customers during the delivery process should improve the quality of after-sales service.

• The Journal of Industrial Distribution & Business
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• v.12 no.4
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• pp.27-34
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• 2021

Purpose: While previous studies mainly focus on one shopping expectancy in the context of e-commerce or m-commerce, this study examines the relationship between consumers' performance and effort expectancy and their shopping intentions in the omnichannel retail environment in which both online and offline shopping channels are utilized concurrently in a single shopping journey. Research design, data and methodology: This study measured consumers' performance expectancy, effort expectancy, attitudes, and intentions toward an omnichannel shopping service. A survey was developed using an online survey platform and distributed to U.S. consumers for a 3-week period and 470 usable responses were obtained. The Confirmatory Factor Analysis and Structural Equation Modeling were performed to test the reliability and validity of the measurement model and research model portraying the hypothesized relationships among constructs. Results: The results confirm that both performance and effort expectancy from shopping affected consumers' attitudes toward omnichannel shopping. The positive attitudes increased their omnichannel shopping intentions. Conclusions: Retailers should promote omnichannel strategies as effective shopping tools to improve consumers' shopping experiences and outcomes. This study suggests that retailers should implement omnichannel strategies that synchronize the retail channels they offer and promote the strategies as effective means to enhance customers' shopping outcomes and experiences.

• Journal of Platform Technology
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• v.10 no.3
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• pp.51-59
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• 2022

Machine learning, which has recently innovatively developed, has become an important technology that can solve various optimization problems. In this paper, we introduce the latest research papers that solve the problem of channel sharing in heterogeneous networks using machine learning, analyze the characteristics of mainstream approaches, and present a guide to future research directions. Existing studies have generally adopted Q-learning since it supports fast learning both on online and offline environment. On the contrary, conventional studies have either not considered various coexistence scenarios or lacked consideration for the location of machine learning controllers that can have a significant impact on network performance. One of the powerful ways to overcome these disadvantages is to selectively use a machine learning algorithm according to changes in network environment based on the logical network architecture for machine learning proposed by ITU.

• Korean Association of Arts Management
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• no.56
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• pp.189-215
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• 2020

This study aims to understand the process of valuing contemporary artworks by young and emerging artists via online art platforms. This paper conceptualizes Bourdieu's theory of cultural capital, which theoretically guides us for conducting a case study of Saatchi Art. This article mainly collected data by interviewing seven Korean artists who were selected by our case with the supplement information carried out direct observation and document reviews. By analyzing the gathered data, the key finding of this research is that the selection of artists in Saatchi Art's curatorial program implicitly admits and guarantees the value of their artworks. By doing so, it contributes to building symbolic capital for the selected artists. This article also contends that such construction of the artists' symbolic capital results from the accumulated symbolic capitals of the founder and curator of the online platform. The theoretical contribution of this paper is to expand previous research on valuing artworks in the offline art world into the online one.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.49-51
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• 2020

인터넷 상거래의 발전으로 온라인 쇼핑몰은 간편 결제와 같은 다양한 페이들을 지원하며 결제방식에 있어서 다양한 방법들을 제공하고 있다. 한편, 경쟁 우위에 있는 다양한 온라인 앱들은 O2O(Online-to-Offline) 서비스를 기반으로 오프라인 매장에도 진출하고 있다. 반면, 기존의 오프라인 사업장을 가진 소상공인들은 ICT 적용과 활용을 위한 개발에 어려움을 겪고 있을 뿐만 아니라 고객 관리와 광고 등에서도 상대적인 열세로 인하여 오프라인 사업장의 수익은 점점 줄어드는 실정이다. 이러한 문제를 해결하기 위하여 본 논문에서는 블루투스 비콘 기술을 사용하여 고객 관리와 광고 등이 가능하며, 오프라인 사업장에도 적용이 가능한 방법을 제안한다. 제안 방법을 통하여 오프라인 매장에서도 온라인 쇼핑몰처럼 관리가 가능하다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.20-22
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• 2023

본 연구는 부동산 경매 기일에 해당 지방법원 현장에 참석하기에 어려움을 느끼는 많은 개인(수요자)들을 위하여 해당 지역에 거주하는 입찰대리인들을 효율적으로 연결해주는 플랫폼이다. 본 플랫폼은 입찰대리인과의 입찰대리 계약을 체결해주는 플랫폼으로서, 입찰대리인은 기일에 경매법정에서 해당 수요자의 입찰행위를 대행한다. 이를 통해 부동산 경매 사건에 관심이 있음에도 불구하고, 시간/장소 측면의 제약으로 인하여 참여하지 못하는 대다수의 직장인들이 부동산 경매 입찰할 수 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.249-254
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• 2019

The concept of 'Edu-Tech', which is rapidly reorganized around e-Learning, has been spreading along with the development of intelligent information technology according to the fourth industrial revolution such as Artificial Intelligence (AI), Internet of Things (IoT), BigData. Currently, leading companies are conducting online education services, but real-time two-way communication is difficult. In addition, in the case of off-line class, there are many students, and not only the time is limited, but also they often miss the opportunities to ask questions. In order to solve these problems, this paper develops a real - time interactive question and answer management system that can freely questions both on - line and off - line by combining the benefits of offline instant answers and the advantages of online openness. The developed system is a real-time personalized education system that enables the respondent to check the situation of the questioner in real time and provide a customized answer according to the inquirer's request. In addition, by measuring and managing the system usage time in seconds, the questioner and the respondent can efficiently utilize the system.

• Journal of the Korea Society of Computer and Information
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• v.17 no.5
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• pp.169-176
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• 2012

The supply chain of online digital contents industry differs much from the supply chain of offline industry which produces and supplies physical products. Portal facilitates the creation, distribution, and usage of online digital contents by providing efficient and convenient content distribution platform to contents suppliers and users, resulting in enhancing competitiveness of portal supply chain. Each portal builds it's own supply chain and various participant firms like CPs(Content Providers) and SPs(Solution Providers) are collaborating together to survive from the fierce competition. However, there is few research work on portal SCM to explain how to design and implement a Portal SCM in a successful way. So, this paper investigates the structure of Portal SCM and the differences between traditional SCM and Portal SCM. Also, this paper proposes seven research issues need to be addressed to design and implement a portal in an efficient and effective way.

• Journal of Industrial Convergence
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• v.21 no.4
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• pp.73-80
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• 2023

This study aims to explore college students' perception for offline class using the online platform Padlet as a tool in liberal arts class during the COVID-19 lockdown. Thirty seven students participated in the study, and quantitative and qualitative methods were used. The statistical results and analysis for open-ended questions are as follows; Firstly, the participants showed satisfaction as the highest variable followed by learning effect, then motivation but participation rated the lowest(p< .001). Secondly, there was statistical significance except participation depending on gender(p< .001). Female students felt higher satisfaction, learning effect, and motivation than male students. Thirdly, there was statistical significance between freshmen and senior depending on grade(p< .001). Freshmen felt higher satisfaction, participation, learning effect, and motivation than seniors. Fourthly, qualitative analysis showed participants felt positive about using Padlet as a education tool in offline class. Finally, the pedagogical implication and suggestions were discussed.