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국내 평가 가이드 라인 제시를 위한 전동식 부항기의 특성 조사에 관한 연구
이승호,김은정,신경훈,남동우,강중원,이승덕,이혜정,이재동,김갑성,Yi, Seung-Ho,Kim, Eun-Jung,Shin, Kyung-Hoon,Nam, Dong-Woo,Kang, Jung-Won,Lee, Seung-Deok,Lee, Hye-Jung,Lee, Jae-Dong,Kim, Kap-Sung 대한침구의학회 2010 대한침구의학회지 Vol.27 No.1
Objectives : The mechanical properties of Korean electric cupping systems are studied via experimental measurements. The study aimed at establishing the fundamentals of industrialization and systemization of oriental medicine device industry, as well as improving the quality of life for many Koreans. Methods : We reviewed the studies on traditional cupping as well as modern one to fine necessary factors for electric cupping systems. To characterize the mechanical properties of Korean electric cupping systems, we measured the pressure characteristics of commercially available electric cupping system by using an automatic pressure acquisition system and a standard cup. The pumping capability was checked at 40 seconds, and the stability of the suction cup was checked at 600 seconds. We also acquired the noise level of each system in clinical setting. To check the portability of each system, we also measured its physical dimensions. We scrutinized system manuals provided by the system manufacturers. Results : It took less than 5 second to reach the pressure if the connection between the air hose and the vacuum valve of the cupping system was secure. Pressure diminished to no more than 10% for 600s for all systems. Noise levels were 55~70 dB. Increase in pressure was too fast to control for a designated vacuum level except for one product. Conclusions : The Pumping ability of the systems is impressive and reliable. Pressure retention ability of each cup is quite reliable and reproducible. Therefore, their mechanical performances were worthy of recommendation. Some of them had noise level higher than 60 dB and they were bothersome. It was also suggested that the control for low to middle pressure needed to be accomplished by the cupping system.
Antihypertensive activity of KR-31081, an orally active nonpeptide AT1 receptor antagonist
이승호,Lee, Sung-Hou The Korea Academia-Industrial cooperation Society 2009 한국산학기술학회논문지 Vol.10 No.11
The pharmacological profile of KR-31081, a newly synthesized AT1 receptor antagonist, was evaluated in pithed rats, conscious renal hypertensive rats (RHRs) and conscious furosemide-treated beagle dogs. In pithed rats, KR-31081 (i.v.) induced a non-parallel right shift in the dose-pressor response curve to angiotensin II (ID50: 0.05 mg/kg) with a dose-dependent reduction in the maximum responses; this antagonistic effect was about 40 times more potent than losartan (ID50: 1.74 mg/kg) which showed competitive antagonism. KR-31081 did not alter the responses induced by other agonists such as norepinephrine and vasopressin. In RHRs, orally given KR-31081 produced a dose-dependent and long-lasting (>24 h) antihypertensive effect with a higher potency to losartan (ED20: 0.30 and 3.36 mg/kg, respectively). In furosemide-treated dogs, orally given KR-31081 produced a dose-dependent and long-lasting (>8h) antihypertensive effect with a rapid onset of action (time to Emax: 1-1.5 h) and 20-fold greater potency than losartan (ED20: 0.41 and 8.13 mg/kg, respectively). These results suggest that KR-31081 is a potent, orally active AT1 receptor antagonist useful for the research and diagnostic tools as an added exploratory potential. 비펩타이드성 안지오텐신 수용체 길항제로 새롭게 개발된 KR-31081에 대한 생체 내 활성을 세가지 동물모델에서 검증하였다. 척수장애 동물모델에서 KR-31081은 로사탄보다 40배 이상의 경쟁적인 혈압강하 효과를 나타내었으며, 신성고혈압쥐 모델에서 KR-31081은 로사탄보다 10배 가량의 지속형 효과를 나타내었다. 또한 개실험에서 구강 투여한 KR-31081은 로사탄보다 20배 이상의 지속적인 혈압강하 효과를 나타내었다. 실험에 사용된 동물 모델 시스템에서 다른 혈관조절물질들과 상호작용을 하지 않는 것으로 나타난 KR-31081은 향후 고혈압 및 혈관질환에 대한 연구 및 진단에 활용될 수 있을 것이라고 판단된다.
인스타그램 고객의 지속적 사용의도 결정요인: 성별의 조절효과를 중심으로
이승호,김창식,곽기영,Lee, Seoungho,Kim, Changsik,Kwahk, Keeyoung 디지털산업정보학회 2016 디지털산업정보학회논문지 Vol.12 No.2
The objective of this study is to investigate the determinants of the intention of continued Instagram usage. For this study, we used a self-administered survey questionnaire in which all of the scales were adapted from the previous literature. In this paper, we introduce a research model that consists of three antecedents (perceived usefulness, perceived playfulness, and customer satisfaction) that were thought to cause the intention of continued Instagram usage. The data were collected from 150 Instagram users. In order to validate the proposed research model, we used the SmartPLS 2.0. We used a two-step approach, recommended by Anderson and Gerbing(1988), that comprises a measurement model and structural model. The results showed that two antecedent factors (perceived usefulness and perceived playfulness) had a significant impact on customer satisfaction, which then causes the intention of continued usage. This study highlights the importance of the moderating effect of gender. Based on the results, this study proposes useful implications for Instagram stakeholders.
이승호,Lee Sung-ho 한국관개배수위원회 1996 한국관개배수논문집 Vol.3 No.2
The purpose of this environmental study is to predict the environmental consequences of human development activity and to plan appropriate measures to eliminate or reduce adverse effects and to augment positive effects. The need to avoid adverse impacts a
이승호,Lee, Seung Ho 한국정보통신학회 2022 한국정보통신학회논문지 Vol.26 No.5
Password with a combination of 4-digit numbers has been widely adopted for various authentication systems (such as credit card authentication, digital door lock systems and so on). However, this system could not be safe because the 4-digit password can easily be stolen by predicting it from the fingermarks on the keypad or display screen. Furthermore, due to the prolonged COVID-19 pandemic, contactless method has been preferred over contact method in authentication. This paper suggests a new password input method based on eyeblink pattern analysis in video sequence. In the proposed method, when someone stands in front of a camera, the sequence of eyeblink motions is captured (according to counting signal from 0 to 9 or 9 to 0), analyzed and encoded, producing the desired 4-digit decimal numbers. One does not need to touch something like keypad or perform an exaggerated action, which can become a very important clue for intruders to predict the password.