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강경원(Kang Kyungwon),강병갑(Kang Byunggab),차민호(Cga Minho),고미미(Go Mimi),박세욱(Park Saewook),방옥선(Bang Oaksun),조기호(Cho Kiho),김윤식(Kim Yoonsik),최선미(Sunmi Choi) 한국한의학연구원 2007 한국한의학연구원논문집 Vol.13 No.2
Background and Purpose : The purpose of this case-control study was to show the relationship between risk factors(past medical history, BMI, WHR, smoking, drinking), warning signs(dyscinesia, sightless, dysarthria, sensory disorder, numbness, blephalospasm, facial spasm, tension) and the incidence of stroke in korean adults. Methods : 455 stroke patients were enrolled as the case group and 180 non-stroke patients as control group from Oct. 2005 to Feb. 2006. Patients were hospitalized within 2 weeks after the onset of stroke. Obesity were defined as BMI≥25㎏/m2, WHR≥0.9 in male and WHR≥0.8 in female. Risk factors and warning signs were obtained from personal interview. The analysis of the data was done by chi-square test, Fisher's exact test and two-sample t-test. Results : The percentage of current smokers(or current drinkers) of case group is higher significantly than that of control group. The past medical history of risk factors were found to be transient ischemic attack(p=0.0698), facial palsy(p=0.406l), hypertension(p<0.0001), hyperlipidemia(p=0.l484), DM(p<0.0001), ischemic heart disease(p=0.0093). migraine(p=0.0014) and hypochondria(p=0.2370). WHR≥0.9 in male had a 6.696 (3.711-12.082) odds ratio, WHR≥0.8 in female had a 1.567 (0.659-3.726) odds ratio. BMI≥25㎏/m2 had a 2.017(1.263-3.222). The dyscinesia and sensory disorder of warning signs were found to be statistical difference between case and control group. Conclusions : According to the above results, it was found that smoking, drinking, BMI, WHR, hypertension, DM, ischemic heart disease, migraine affected to the incidence of stroke.
Learning Media on Mathematical Education based on Augmented Reality
( Kalaphath Kounlaxay ),( Yoonsik Shim ),( Shin-jin Kang ),( Ho-young Kwak ),( Soo Kyun Kim ) 한국인터넷정보학회 2021 KSII Transactions on Internet and Information Syst Vol.15 No.3
Modern technology offers many ways to enhance teaching and learning that in turn promote the development of tools for educational activities both inside and outside the classroom. Many educational programs using the augmented reality (AR) technology are being widely used to provide supplementary learning materials for students. This paper describes the potential and challenges of using GeoGebra AR in mathematical studies, whereby students can view 3D geometric objects for a better understanding of their structure, and verifies the feasibility of its use based on experimental results. The GeoGebra software can be used to draw geometric objects, and 3D geometric objects can be viewed using AR software or AR applications on mobile phones or computer tablets. These could provide some of the required materials for mathematical education at high schools or universities. The use of the GeoGebra application for education in Laos will be particularly discussed in this paper.
하영재(YoungJae Ha),김윤식(Yoonsik Kim),강영창(Yungchang Kang),김선형(Sunhyung Kim) 한국정보기술학회 2009 Proceedings of KIIT Conference Vol.2009 No.-
본 논문에서는 기존의 full color LED 전광판 영상 처리 방식을 개선시켜서 고화질의 대형 TV나 LCD와 같은 선명한 화질의 재현이 가능하고 경제적인 가격으로 구현할 수 있는 효율적인 구동 제어기술에 대하여 연구 하였다. 기존의 영상 전송 방식과는 다른 새로운 기술로 영상을 구동 제어함에 따라서, 영상처리 기능을 더욱 효율적으로 보강할 수 있고 자동 또는 수동으로 contrast, bright, tint, color, 감마보정 등의 영상 변환처리 조절이 가능하므로, 더욱 선명한 표출구동의 영상제어가 가능한 full color 전광판의 획기적인 영상 구동 처리기술을 제안하였다. In this paper, demand creation of room outside full color electric display board that practical use extent is many by efficient drive control technology that can be designed by more inexpensive price than existent full color electric display board image processing way greatest can be changed vent drive that can strengthen image processing function more efficiently according as run reflex by technology of other form with existent reflex transmission mode and is controlled and announce more because contrast, bright, tint, color, gamma revision etc. relationship reflex conversion processing adjustment is available by automatic or by hand naturally direct TV City Hall by reflex control function as well as epoch-making reflex drive processing technology of room outside full color electric display board by inexpensive price be.