Joung-Hae Seo

Factors affecting the continuous use of cloud service: focused on security risks

Despite its many technology maturity and significant advantages, the cloud services are still far from success in the market. In accordance with some research, security risks have been regarded as the main factors that impede activating cloud service. Accordingly, this study divides the factors of security risk into Information leakage risk, Fault recovery risk, Compliance risk, Service interruption risk and made an empirical analysis of the impact of these four factors on continuous adoption intention. The effects of security risk and adoption intention of cloud service were analyzed via the moderation effects of trust. The analytical results of China data show that bo th Information Leakage Risk and Compliance Risk have negative impact on continuous adoption intention of cloud service. Neither Fault Recovery Risk nor Service Interruption Risk is significantly related with continuous adoption intention of cloud service. The analytical results of Korea data show that Fault Recovery Risk, Compliance Risk and Service Interruption Risk significantly impact continuous adoption intention of cloud service, whereas Information Leakage Risk insignificantly impact continuous adoption intention of the cloud service.

The effects of leadership by types of soccer instruction on big data analysis

The purpose of the present study is to figure out football coaches’ leadership styles. So far, numerous of coaches have coached South Korea’s national team. Compared to other countries, the Korea Republic national team has changed coaches relatively often. In particular, owing to the result-centric Korean culture, if the national team had deplorable results in a specific match, the head coach would be fired right away. Of course, there were some successful and popular coaches. However, many other coaches ended up in a failure in the Korean national team. Therefore, there must be a difference in leadership styles between the successful and unsuccessful coaches. In this context, it would be critical to find out the traits of the successful coaches’ leadership. Using text-mining techniques, the present study aims to establish different leadership type of football coaches. To this end, we analyzed the South Korean national football team coaches’ leadership styles using text-mining techniques applied to the analysis of NAVER news. Our results suggest that successful leaders have important leadership elements, such as communication, trust, and belief.

A Study on Financing Security for Smartphones Using Text Mining

With the emergence of smartphones, our lives have considerably changed. A smartphone has not only conventional calling, text-messaging, and photo-taking functions, but also performs many other functions by executing apps. In particular, more financial transactions using smartphone have recently become possible. With the global rapid rise in smartphone users and an ever-growing time and frequency of smartphone use, smartphones have become a target of malicious attacks. As a result, the damage caused by personal information leakage, phishing, and pharming has occurred more frequently. In this respect, however, very few studies have previously used crawling and text mining techniques, which have been actively studied quite recently; furthermore, network analysis has rarely been conducted. In this context, the present study collected the data from 2014 to the first half of 2016 on the trends of safe financing via smartphone with the crawling technique and analyzed the collected data with the text mining Technique. Our results suggest that there was a difference in the use of important keywords related to smartphone financial security, on the year-on-year basis. This suggests that an increasing number of financial services provided using smartphones should be accompanied by the elaboration of safe smartphone financial security services. In addition, for the sake smartphone financial security, not only manufacturers, but also banks, i.e. service providers, and users must pay specific attention to security issues.