• Journal of Navigation and Port Research
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• v.42 no.3
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• pp.187-194
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• 2018

Aids to Navigation (AtoN) is a marine traffic safety facility used to facilitate the safe and efficient movement of shipping and enhance the protection of the marine environment by the regulations or guidelines of The International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA). Our country is managing AtoN to provide consistent services for AtoN users, although an average of 141 AtoN accidents occur annually. An AtoN accident forces non-planned work on the managers to resort the function, and causes psychological anxiety for its users, ultimately resulting in economic losses. This study developed the Social Cost evaluation model of AtoN accidents. The model can be used to quantify the manager's economic activities related to the shutdown and recovery, as well as the cost associated with the inconvenience to AtoN users. The Social Cost evaluation model of AtoN accidents is proposed as the sum of the encounter cost, administration cost and risk cost.

• Journal of Korea Game Society
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• v.9 no.6
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• pp.69-77
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• 2009

Game producers provide their products and service to users. But the need and desire of users change in many ways as time goes. But game Co. Ltd is difficult because of the capital and the technical identities for providing characteristic products and service etc. Specially, the FPS game which is popular among users is developed by game Co. Ltd as the maximum reflects desire of users, but is similarly developed in other companies FPS game by similar desire. This cannot accept from desire of a certain prospective customer furthermore, decrease of a loyalty customer and a new customer, and a company is difficult of market activity. Therefore, this research is to find of user's psychological needs by FPS game user after gaming on reusing intention and switching intention factors influencing. As the result, the intention of satisfaction and re-use for FPS game is 84.9%, the conversion intention to special force game is 9.6% and the conversion intention to the game of Sudden attack is 5.5%. It shows that desire of the user for certain games is changing.

• The Journal of the Korea Contents Association
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• v.16 no.4
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• pp.12-22
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• 2016

The present study aims to evaluate the self-determined motivational features of smartphone addiction management apps. This study analyzed whether smartphone addiction management apps have features to support adolescent users' basic needs, that is, autonomy, competence, and relatedness. 26 apps were analyzed. Among them, 8 apps were parental management apps installed on a parent's phone and a child's phone, and 18 apps were self-management apps installed on a child's phone. According to a content analysis, only 3 of 26 apps addressed all three basic needs. Overall, the functions to support users' competence and relatedness were rarely found. Particularly, parental management apps had a high level of controlingness. The results suggest that the addiction management apps have limitations in stimulating adolescent users' self-determined motivation to manage their phone use.

• Journal of Digital Contents Society
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• v.19 no.2
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• pp.351-362
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• 2018

This study investigated how Schwartz' value system(1992) would interfere with SNS users' motivations and behavioral responses. The study result shows that values are characterized in terms of openness, mutual reciprocity, self enhancement, normative compliance, and security. Each of them exerted differential impact on SNS usage motives, social capital, ad response, and word-of-mouth, among others. The five values were used as an input for segmenting SNS users and clustering method produced four value segments; experience seeker, interdependent sympathizer, self enhancer, and norm-bound. Each value group not only influenced SNS perceptions and behavioral responses differently, but also showed a systematic relationship with SNS service types. The study findings demonstrate that Schwartz's value system provides a very useful theoretical basis for understanding the psychological mechanism underlying SNS usage.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.290-291
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• 2023

Outlier(이상치) 분석을 통한 등부표 선회안전반경 정보 제공에 관한 연구는 AIS 또는 RTU가 설치된 등부표에 대한 이탈 위험 인지, 항해안전 사고 예방 등 안전대책을 강화하기 위한 연구이다. 등부표는 조류, 바람 등 외력에 의해 이출거리가 발생하여 일정한 패턴으로 선회반경이 형성되나 외력으로 인하여 정상범위에서 벗어나 유실, 위치이동 등이 발생할 수 있고 이는 선박추돌 등 항해안전 사고로도 이어질 수 있다. 이러한 등부표 사고는 물적 피해비용과 이용자의 안전운항에 대한 심리적 부담감 또는 위험감수 등의 추가적인 행정소요 비용이 발생할 수 있다. Outlier(이상치)란 외력 등으로 인해 최대 이출거리 이내 정상범위에서 벗어나거나 존재할 수 없는 극단적인 위치 값으로써 21년도 등부표 위치 데이터를 일정 단위 방위별로 분석해 본 결과 Outlier(이상치)가 식별되었다. 따라서 등부표의 안전한 위치 상태를 시스템적으로 모니터링 하기 위해 Outlier(이상치) 분석을 통한 등부표 선회안전반경 정보 제공에 관한 연구를 하였다.

• The Journal of the Korea Contents Association
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• v.9 no.7
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• pp.257-267
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• 2009

This study aims at diagnosing the relationship among user's security need Sufficiency, customer satisfaction and life satisfaction in electronic security system. For the achievement of this study selected electronic security system users in Seoul as a population for about 25 days from June 20$^{th}$, 2008 to July 15$^{th}$, 2008, segmented. This study selected 378 peoples by distributing 400 unities in total for each 80 peoples throughout purposive sampling method. The final 302 samples were used in statistics. Collected data was analyzed based on the aim of this study using SPSSWIN 16.0, and factor analysis, reliability analysis, stepwise multiple regression analysis and path analysis were used as statistic techniques to analyze. The conclusions are the followings; First, The higher bodily, environmental, mental, informational, and physical security need the more body and property protection satisfaction and facility customer satisfaction. The higher bodily, environmental, and mental security need the more employee service satisfaction. Second, The higher bodily, environmental, informational, and physical security need are perceived, the more influence is marked with life satisfaction and security life satisfaction. Third, The higher personal and property protection, facility, and employee service satisfaction the more security life satisfaction. Also, the higher customer service and personal and property protection satisfaction are perceived, the more influence is marked with life satisfaction. Fourth, Security need sufficiency has little influence on life satisfaction directly, but it has high influences on life satisfaction through customer satisfaction of electronic security system.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.110-117
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• 2006

컴퓨터가 우리의 일상적 환경으로 스며드는 유비쿼터스 컴퓨팅 환경에서의 인터페이스는 '컨텍스트 인식'과 더불어 이용자들과의 '긍정적인 사회적 관계'를 형성할 수 있어야 한다. 본 연구에서는 이 두 가지의 관점을 충족시킬 수 있는 인터페이스 에이전트의 유형으로 '자기를 노출하는 에이전트'를 제안하고, 에이전트의 자기노출에 대한 사용자의 사회적 반응을 측정하였다. 실험 결과, 1) 에이전트로부터 친밀성이 높은 노출을 받은 피험자들은 더 깊은 자기노출을, 많은 양의 자기노출을 받은 피험자들은 더 많은 양의 자기노출을 하였다. 2) 에이전트 자기노출의 깊이가 깊을수록 에이전트에 대한 호감과 신뢰는 감소하였다. 3) 피험자들은 처음 만난 자리에서 극히 개인적인 노출을 하는 에이전트보다는 일반적인 노출을 하는 에이전트와 장기적으로 더 친밀해질 것이라고 예측하였다. 이러한 결과는 컨텍스트를 인식하는 인터페이스 에이전트로 자기노출 에이전트를 이용할 경우 사용자의 심리적 구조를 파악하는데 효과적임을 보여주며, 단기적인 사용자 정보의 추출보다는 장기적 관점에서 호감과 신뢰를 쌓을 수 있는 이용자와 에이전트의 사회적 관계 달성이 우선적으로 고려되어야 함을 시사한다.

• Journal of Korea Society of Industrial Information Systems
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• v.26 no.6
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• pp.47-60
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• 2021

Since the outbreak of COVID-19 in 2019, the pandemic has been prolonged. This study compares and analyzes the degree of social media usage, the information type of posts (infectious disease information, promote action, psychological communication), and the level of user engagement in conducting crisis communication by country. We conduct text analysis by collecting information on Facebook and YouTube posts from January 2020 to March 2021 of disease control and prevention agencies in Korea, US, UK, and EU. As a result, the use of social media in Korea and US is higher than of the UK and EU, and all four countries are using social media as a means to provide infectious disease information and to promote action. Although social media can be a means to reach the public psychologically, such as sympathy and respect, there are no posts of psychological communication type on social media in countries other than the US. User engagement with posts is highest in the promotion action type. This study can help define the importance and role of social media in establishing an infectious disease crisis communication strategy.

• Korean journal of communication and information
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• v.27
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• pp.247-282
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• 2004

The purpose of this study is to examine the mobile phone service usage patterns of Korean teenagers and their motivation to use it, and to explore the relationships between the teenagers' social-psychological characteristics and their trails of mobile phone usage. After reviewing prior theoretical studios, three hypotheses regarding the research questions shown above were generated. Questionnaire study was conducted with 400 high school students in Busan and Ulsan metropolitan areas. They were to answer three categories of questions, such as frequencies of voice calls and text messaging services and the other mobile services, questions asking their social-psychological characteristics, and their motivations for using mobile phone services. Findings show that the teenagers more likely to tend to use voice calls when communicating family members. They tend to avoid those services with high rate of use as multimedia, game, and broadcasting services via mobile phones. The teenagers use mobile phone services for the similar purposes to conventional telephone uses. Therefore, the classical theories showing the alternative purposes or motivations to use conventional telephone usage, which divided the main purposes for phone uses in to two; work/instrumental and socializing/entertaining, proved to be reasonable. The cheap messaging services with texts are popular among the teenagers and are used for socializing/entertaining purposes rather than instrumental/functional purposes. In addition, the teenagers' social-psychological characteristicss are significantly associated with the amount of mobile phone uses. A characteristic of "individual-centeredness" is positively related with non-voice service uses, while "group-centeredness" explains heavy amount of using voice calls and text messaging services. Such characteristics as "immediacy," "directness," "innovativeness," and "other-direction" are positively associated with the frequencies and amounts of mobile phone uses, while "inner-direction" and "tradition-direction" are negatively correlated.

• The Journal of the Korea Contents Association
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• v.5 no.2
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• pp.69-77
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• 2005

This study made a comparison of two different websites in characteristics of their users and advertising effects. Both websites have the same contents but in different forms. Especially this study examined the technographic, demographic and psychographic characteristics of users of an website which offers services only online and another website which offers services both online and offline. Also the advertising effects of both websites were studied. The analysis of the data was done by SPSSWIN, mainly $x^2$ and t-test. In addition, the data was collected online. The website, feelpost.com collected total 432 copies, and cardkorea.com collected 210 copies. Also among those collected copies, the ones from people in the 20's were selected again in order to rule out the special characters that both websites have in their users age group. Finally 308 copies were selected for the analysis. In result, it was proved that the users of both websites have a very similar lifestyle. Also there was only a little difference in the users' values and social consciousness. Regarding the advertising effect, Feelpost got the highest score in usefulness while Cardkorea got the highest score in positive acceptance of new products. Regarding the attitude toward advertisements and products, the advertising preference and brand preference was higher in Feelpost than in Cardkorea.