• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권2호
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• pp.644-662
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• 2023

There are still outbreaks of COVID-19 across the world. Ships increase the risk of worldwide transmission of the virus. Close contact tracing remains as an effective method of reducing the risk of virus transmission. Therefore, close contact tracing in ship environments becomes a research topic. Exposure Notifications API (Application Programming Interface) can be used to determine the encountered location points of close contacts on ships. Location points of close contact are estimated by the encountered location points. Risky areas in ships can be calculated based on the encountered location points. The tracking of close contacts is possible with Bluetooth technology without the Internet. The Bluetooth signal can be used to judge the proximity among detecting devices by using the feature that Bluetooth has a strong signal at close range. This Bluetooth feature makes it possible to trace close contacts in ship environments. In this paper, we propose a method for close contact tracing and showing the risky area in a ship environment by combining beacon and Exposure Notification API using Bluetooth technology. This method does not require an Internet connection for tracing close contacts and can protect the personal information of close contacts.

• Journal of Preventive Medicine and Public Health
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• 제53권2호
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• pp.106-116
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• 2020

Objectives: This study aimed to develop a valid social contact survey instrument and to verify its feasibility for use among Korean adults. Methods: The Delphi technique was used to develop an instrument to assess social contacts, which was then applied in a cross-sectional pilot study. A panel of 15 medical professionals reviewed the feasibility and validity of each item. The minimum content validity ratio was 0.49. Thirty participants used the developed measure to record contacts during a 24-hour period. Results: After a systematic review, the survey instrument (parts I and II) was developed. Part I assessed social contact patterns over a 24-hour period, and part II assessed perceptions of contacts in daily life and preventive behaviors (hand hygiene and coughing etiquette). High validity and feasibility were found. In the pilot study, the 30 participants had a combined total of 198 contacts (mean, 6.6 daily contacts per person). The participants' age (p=0.012), occupation (p<0.001), household size (p<0.001), education (p<0.001), personal income (p=0.003), and household income (p<0.001) were significantly associated with the number of contacts. Contacts at home, of long duration, and of daily frequency were relatively likely to be physical. Assortative mixing was observed between individuals in their 20s and 50s. Contact type differed by location, duration, and frequency (p<0.001). Conclusions: The developed social contact survey instrument demonstrated high validity and feasibility, suggesting that it is viable for implementation.

• 무역학회지
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• 제47권5호
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• pp.253-272
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• 2022

As the digital era accelerates, traditional perspectives have limitations in explaining the success or failure of export performance. The purpose of this study is to analyze new factors affecting export performance from the perspective of customer experience, which has emerged as an important factor in securing a competitive advantage and generating organizational performance. After deriving hypotheses based on literature review and discussion, a research model is designed in which three factors of customer experience such as understanding customer's objectives, customer value creation capability, and customer journey management are the antecedents, and export performance is the dependent variable. This model also includes organizational agility and personal contact as the moderating variables. To verify the hypotheses, multiple regression analysis was conducted on the collected data drawn from 198 SME exporters. According to the analysis results, it was found that all three antecedents positively affected export performance. In particular, the organizational agility and personal contact were confirmed to have a moderating effect that creates better export performance by interacting with customer value creation capability. The theoretical significance of this study is to find that effective customer experience management can be a key factor in creating export performance. The results suggest that checking the overall customer journey, exporters should select and intervene to intensively manage key touch points that can have a decisive impact on the quality of customer experience. At the end of the paper, practical implications to be considered in creating export performance through effective customer experience management are presented.

• 한국시스템다이내믹스연구
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• 제17권3호
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• pp.31-50
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• 2016

This study examines the basic conditions of joint authorship research activities in the Korean System Dynamics Review and points out the structural co-author network characteristics among co-authored papers based on the social network analysis(SNA) techniques. In specific, this study identifies the cooperative relationship of research papers in the Korean System Dynamics Review, knowledge formation, and knowledge propagation paths. The study results imply that Korean System Dynamics Review has exhibited the typical 'Steven's power law,' which is repeatedly observed among complex systems, and that knowledge structure centered upon and propagated around couples of researchers. Additionally, the study results present that there have been active personal exchanges among major researchers. In contrast, personal contacts among research groups and within groups seem relatively weak.

• 융합정보논문지
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• 제11권10호
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• pp.138-143
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• 2021

현재, Covid-19의 밀접접촉자를 찾아내어 진단검사를 통해 Covid-19 확산을 차단하고 있다. 하지만 확진자의 잠복 기간이 2주가 되고, 확진자의 동선을 추적하여 접촉자를 찾기에 많은 인력과 시간, 비용이 소요된다. 특히, 확진자의 수가 증가할수록 접촉자를 찾아 사전에 차단하는 비용이 기하급수적으로 증가하여 한계점을 가진다. 접촉자를 찾기 위해 전 국민이 상점이나 식당 등 편의시설을 방문할 때마다 전자출입명부를 기록해야 하는데 이는 개인의 위치 정보에 대한 프라이버시 침해 가능성이 높다. 본 연구에서는 자신의 위치와 시간을 실시간으로 저장하고, KDCA에서 수집된 감염자의 동선 정보를 다운받아 겹치는 지점이 있을 경우에 사용자에게 통지하여 사전에 진단검사를 유도하는 시스템을 설계하고자 한다. 제안 기법은 상점을 방문할 때 전자출입명부를 기록해야 하는 번거로움을 해결하면서 개인정보를 사전에 KDCA에 제공하지 않아 프라이버시 침해를 차단할 수 있다.

• 한국한의학연구원논문집
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• 제16권2호
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• pp.91-99
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• 2010

In this paper, we designed and implemented a semantic social network system in Korea Institute of Oriental Medicine (abbreviated as KIOM). Our social network system provides the capabilities such as tracking search, ontology reasoning, ontology graph view, and personal information input, update and management. Tracking search provides the search results by the research information of relevant researchers using ontology, in addition to those by keywords. Ontology reasoning provides the reasoning for experts, mentors, and personal contacts. Users can easily browse the personal connections among researchers by traversing the ontology by graph viewer. These allows KIOM researchers to search other researchers who could aid the researches and to easily share their research information.

• 한국환경교육학회지:환경교육
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• 제11권2호
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• pp.102-117
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• 1998

Responsible environmental behavior of Youths who will live in the 21C needs the ‘Personalization of Environment’, which means the process or the result of awareness to the non-personal environment as the personal environment to show the responsible environmental behaviors through the intended physical and psychological contacts to environment. This study intended to analyze various programs of national parks, zoo, children's garden and Project Learning Tree in the United States and to discuss the possibility of ‘personalization of environment’ and implication for environmental education of Korea. Literature review, field trips, personal interviews and internet searches were used to collect information and data. Programs of North Cascade National Park, Mt. Rainier National Park and 4-H Children's Garden in Michigan State University showed the cases of direct personalization of environment focusing on the direct contact with nature. The programs of Binder Park Zoo in Battle Creek and Project Learning Tree showed the possibilities of indirect personalization of environment forming meaningful relationships with nature through various indirect activities. It is suggested that various natural education programs in Unites States make nature and places meaningful for the people and it needs to be applied for the environmental education programs in Korea.

• 디자인학연구
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• 제19권3호
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• pp.131-142
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• 2006

The purpose of this study is to develop an online community construct, which proposes an inclusive illustration of the structure of online communities, for online community designers. This study reviewed researches from psychology, sociology, management engineering, and practical reports to understand the characteristics and dynamics of online communities. The proposed online community construct visualizes the cognitive, affective, and behavioral aspects of online community. As the notion of community originates from geographical groups, and with the assumption that geographical community shares identical characteristics with online community, this study reviewed researches about geographical communities as a starting-point. Then the study went through three main perspectives (1) online community attributes, (2) sense of online community and (3) challenges of online community. Then this study proposed an online community construct that encompasses the reviewed frameworks. The online community can be seen as a congregation of members from two sources. One is from the 'Shared Goal' that meets the personal needs. Given the shared goal, members gather into the community without personal relationship and have more chances to feel the sense of belonging to their needs fulfillment or benefit. This befitting tendency leads to strengthening of membership. Public online forums fall under this classification. The other source is from the emotional connections that are already initiated by personal and casual contacts in the real world. The network of emotional connection can evolve into an online congregation of people under faint boundaries. Although there is no (or weak) shared goal, members are strongly bound to other members. Personal homepage or web log (blog) can be classified as an example of relationship-oriented community.

• 한국인터넷방송통신학회논문지
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• 제15권6호
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• pp.163-171
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• 2015

개인건강기록 서비스는 환자에게 건강기록 관리와 중요한 의료파일 관리 그리고 응급상황 연락과 같이 편리하고 사용하기 쉬운 해결책을 제시해준다. 이러한 중요한 장점에도 불구하고 개인건강기록 서비스는 데이터의 보안에 관련된 소비자 입장에서는 피할 수 없는 중요한 도전을 제기하고 있다. 개인건강기록 기술이 헬스케어와 융합되면서 사용자 개인정보 침해가 발생하고 사용자의 민감한 의료정보가 유출되는 문제가 증가되고 있다. 본 논문에서는 개인건강기록 서비스의 취약점과 반드시 해결해야할 다양한 보안 측면을 분석한다. 또한, 개인건강기록 사용자와 애플리케이션 서비스 제공자 관점에서 보안 요구사항을 기술하였으며, 개인건강기록 보안 요구사항을 만족하고 보안위협을 대응할 수 있는 보안 메커니즘에 대해 연구하였다.

• 정보보호학회논문지
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• 제28권2호
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• pp.295-301
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• 2018

스마트폰은 전화, 문자와 같은 연락수단 외에도 일정관리, 문서작성, 카메라 등 다양한 기능을 이용할 수 있어 수 많은 정보를 저장하게 되었다. 이러한 정보들은 개인정보와 같은 중요한 내용을 다수 포함하고 있기 때문에, 스마트폰 교체나 랜섬웨어와 같은 위협으로부터 대비하기 위하여 백업을 해두어야만 한다. 본 논문에서는 여러 백업 방법 중 PC를 이용한 방법에 대해 분석을 수행하고, 백업 파일로부터 연락처와 같은 개인정보가 유출될 수 있는 가능성을 확인한다. 이를 통해 PC 백업 방법의 문제점을 점검하거나, 보다 안전한 백업 기술을 강화하는데 활용할 수 있을 것으로 기대된다.