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김승환,정득영 한국통신학회 2020 정보와 통신 Vol.37 No.9
최근 신종 코로나바이러스 감염증 (코로나19)의 여파로 사람 간 접촉을 최소화하는 비대면 서비스에 대한 논의가 활발히 진행되고 있다. 이러한 논의는 교육, 문화, 레저, 금융, 유통 등 거의 모든 분야에서 이루어지고 있으며, 헬스케어 분야도 예외는 아니어서 비대면 헬스케어에 대한 다양한 논의가 시작되고 있다. 비대면 헬스케어는 텔레메디슨에서 시작되어, e-Health, u-Health, 모바일 헬스케어, 스마트 헬스케어, 디지털 헬스케어 등 기존에 활발히 논의된 ICT융합 기반의 헬스케어의 하나로 구현이 가능하며, 기존에 연구 개발된 ICT융합 헬스케어 기술이 다양한 형태로 적용될 수 있다. 이에 본고에서는 여러 방식으로 제공될 수 있는 ICT융합 기반의 비대면 헬스케어 기술 동향에 대하여 알아보고자 한다.
Influence of Blood Coagulation Factors on Thromboelastographic Parameters in Healthy Adults
김승환,김만진,구자윤,김현경 대한진단검사의학회 2022 Laboratory Medicine Online Vol.12 No.2
Background: Thromboelastography (TEG) is a method that assesses whole-blood coagulation efficiency by measuring different parameters of clot formation and clot lysis. Whether and how blood coagulation factors influence the TEG parameters is unknown. Methods: Blood coagulation factors measured by an automated coagulation analyzer (ACL TOP; Beckman Coulter, USA) and thrombin generation measured by automated thrombogram method (Thrombinoscope, Netherlands) were quantified in 109 healthy volunteers to investigate their correlation with six TEG parameters. TEG parameters were analyzed with the TEG 5000 Hemostasis Analyzer System (Haemonetics, USA). To assess whether TEG detects coagulation factor deficiencies, TEG was performed in four patients, with three known coagulation factor deficiencies. Results: Reaction time negatively correlated with factors V and XII, and clot formation time positively correlated only with factor XII. Alpha angle positively correlated with factor XII and negatively with protein S. Maximum amplitude showed a positive correlation with fibrinogen and factors VIII and XII, whereas coagulation index only with factors VIII and XII. Thrombin generation and percentage of fibrinolysis at 30 minutes after maximum amplitude exhibited no correlation with the TEG parameters. Of the four TEG-tested patients, only the patient with factor V deficiency had elevated reaction time values. Conclusions: TEG parameters, especially reaction time, are mainly affected by factors V and XII. Since TEG had limitations in detecting coagulation factor deficiencies, future research should improve its sensitivity with various stimuli that activate coagulation factors.
김승환,김영균 한국상품학회 2004 商品學硏究 Vol.0 No.31
This study is conceptually developed to view the difference between on and off-line consumer buying behavior in terms of their decision making process since those two different buying situations would involve different setting due to the internet based purchasing environment. The main stage of on-line buying behvior is distinguished to 3 step process which were adopted by Karakota et al, that is before the purchase behavior, purchasing and post purchasing behavior. In this study, on-line buying decisions are quite different from conventional 5 step decision since acquiring product informationa and evaluation stage is occurring simultaneously. Factors influencing fostering the on-line buying behavior have been addressed through survey and various literature review. Overall, the stage address above is redefined and the possible solutions to enhance the on-line buying behavior by adopting the e-CRM so that e-commerce based company could identify and handle the fast decision making consumers of internet.