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얼굴의 특징점을 이용한 3차원 움직임 추적에 관한 연구
李基敦,金種熙 호서대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.19 No.-
In this paper 3-dimensional feature points with 2-dimensional image of human face are eventually extracted. For the 2-dimensional image, avi file is created as a transfer medium for real-time movie transfer using 2 CCD cameras. The coarse-to-fine method is applied to minimize matching error when extracting feature-point of a face. By stereo-matching between side and front image, 3-dimensional data are extracted. As utilizing those extracted 3-dimensional data, various 3D graphic package will be connectable. With two usb CCD cameras, 2-dimensional is still received image. With movements of 20 feature points from Side and front image, we extracted 3-dimensional feature-points and enabled 3-dimensional modeling. To minimize errors of 3-dimensional trace and matching error spread, Coarse-to fine method is applied.
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Anesthesia guidelines for COVID-19 patients: a narrative review and appraisal
Ong Sharon,Lim Wan Yen,Ong John,Kam Peter 대한마취통증의학회 2020 Korean Journal of Anesthesiology Vol.73 No.6
The coronavirus disease 2019 (COVID-19) pandemic has challenged health systems globally and prompted the publication of several guidelines. The experiences of our international colleagues should be utilized to protect patients and healthcare workers. The primary aim of this article is to appraise national guidelines for the perioperative anesthetic management of patients with COVID-19 so that they can be enhanced for the management of any resurgence of the epidemic. PubMed and EMBASE databases were systematically searched for guidelines related to SARS-CoV and SARS-CoV-2. Additionally, the World Federation Society of Anesthesiologists COVID-19 resource webpage was searched for national guidelines; the search was expanded to include countries with a high incidence of SARS-CoV. The guidelines were evaluated using the Appraisal of Guidelines for Research and Evaluation II tool. Guidelines from Australia, Canada, China, India, Italy, South Africa, South Korea, Taiwan, the United Kingdom, and the United States of America were evaluated. All the guidelines focused predominantly on intubation and infection control. The scope and purpose of guidelines from China were the most comprehensive. The UK and South Africa provided the best clarity. Editorial independence, the rigor of development, and applicability scored poorly. Heterogeneity and gaps pertaining to preoperative screening, anesthesia technique, subspecialty anesthesia, and the lack of auditing of guidelines were identified. Evidence supporting the recommendations was weak. Early guidelines for the anesthetic management of COVID-19 patients lacked quality and a robust reporting framework. As new evidence emerges, national guidelines should be updated to enhance rigor, clarity, and applicability.
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Eiam-Ong, Somchit,Nakchui, Yuyen,Chaipipat, Mookda,Eiam-Ong, Somchai Korean Society of ToxicologyKorea Environmental Mu 2018 Toxicological Research Vol.34 No.2
It has been demonstrated that vanadate causes nephrotoxicity. Vanadate inhibits renal sodium potassium adenosine triphosphatase (Na, K-ATPase) activity and this is more pronounced in injured renal tissues. Cardiac cyclic adenosine monophosphate (cAMP) is enhanced by vanadate, while increased cAMP suppresses Na, K-ATPase action in renal tubular cells. There are no in vivo data collectively demonstrating the effect of vanadate on renal cAMP levels; on the abundance of the alpha 1 isoform (${\alpha}_1$) of the Na, K-ATPase protein or its cellular localization; or on renal tissue injury. In this study, rats received a normal saline solution or vanadate (5 mg/kg BW) by intraperitoneal injection for 10 days. Levels of vanadium, cAMP, and malondialdehyde (MDA), a marker of lipid peroxidation were measured in renal tissues. Protein abundance and the localization of renal ${\alpha}_1-Na$, K-ATPase was determined by Western blot and immunohistochemistry, respectively. Renal tissue injury was examined by histological evaluation and renal function was assessed by blood biochemical parameters. Rats treated with vanadate had markedly increased vanadium levels in their plasma, urine, and renal tissues. Vanadate significantly induced renal cAMP and MDA accumulation, whereas the protein level of ${\alpha}_1-Na$, K-ATPase was suppressed. Vanadate caused renal damage, azotemia, hypokalemia, and hypophosphatemia. Fractional excretions of all studied electrolytes were increased with vanadate administration. These in vivo findings demonstrate that vanadate might suppress renal ${\alpha}_1-Na$, K-ATPase protein functionally by enhancing cAMP and structurally by augmenting lipid peroxidation.
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김슬옹(Kim Seul-Ong) 한국사회언어학회 2004 사회언어학 Vol.12 No.2
Kim, Seul-Ong. 2004. A Study of the New Categorization of Hangeul Names and their Social Meaning. The Sociolinguistics Journal of Korea 12(2). This paper suggests a new direction of making Hangeul names in view of the Hangeul(Korean Alphabet) cultural community. We newly organize the concept and category of Hangeul names which include names of a Chinese character written in Hangeul as much as the names of the original Korean vocabulary. This type of combination produces, for example, from “슬기(seul-gi)” and “지혜(chi-hye)”, “슬지(seul-chi), 슬혜(seul-hye), 기지(ki-chi), 기혜(ki-hye), 지슬(chi-seul), 지기(chi-gi), 혜슬(hye-seul), 혜기(hye-gi)”. Through this method, we will be able to gain the following results: (1) We can make more human names with Hangeul, (2) We will be able to overcome the dichotomy between Chinese characters and Hangeul, (3) We will be able to truly accomplish a cultural community using Hangeul writing system.
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Somchit Eiam-Ong,Yuyen Nakchui,Mookda Chaipipat,Somchai Eiam-Ong 한국독성학회 2018 Toxicological Research Vol.34 No.2
It has been demonstrated that vanadate causes nephrotoxicity. Vanadate inhibits renal sodium potassium adenosine triphosphatase (Na, K-ATPase) activity and this is more pronounced in injured renal tissues. Cardiac cyclic adenosine monophosphate (cAMP) is enhanced by vanadate, while increased cAMP suppresses Na, K-ATPase action in renal tubular cells. There are no in vivo data collectively demonstrating the effect of vanadate on renal cAMP levels; on the abundance of the alpha 1 isoform (α₁) of the Na, K-ATPase protein or its cellular localization; or on renal tissue injury. In this study, rats received a normal saline solution or vanadate (5 mg/kg BW) by intraperitoneal injection for 10 days. Levels of vanadium, cAMP, and malondialdehyde (MDA), a marker of lipid peroxidation were measured in renal tissues. Protein abundance and the localization of renal α₁-Na, K-ATPase was determined by Western blot and immunohistochemistry, respectively. Renal tissue injury was examined by histological evaluation and renal function was assessed by blood biochemical parameters. Rats treated with vanadate had markedly increased vanadium levels in their plasma, urine, and renal tissues. Vanadate significantly induced renal cAMP and MDA accumulation, whereas the protein level of α₁-Na, K-ATPase was suppressed. Vanadate caused renal damage, azotemia, hypokalemia, and hypophosphatemia. Fractional excretions of all studied electrolytes were increased with vanadate administration. These in vivo findings demonstrate that vanadate might suppress renal α₁-Na, K-ATPase protein functionally by enhancing cAMP and structurally by augmenting lipid peroxidation.
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Are Microfluidics-Based Blood Viscometers Ready for Point-of-Care Applications? A Review
Ong, Peng Kai,Lim, Dohyung,Kim, Sangho Begell House Inc. 2010 Critical reviews in biomedical engineering Vol.38 No.2
<P>In recent years, the engineering of blood viscometers for the diagnosis, prognosis, and prevention of cardiovascular and other diseases has been the subject of significant research interest. Conventional blood viscometers such as rotational viscometers and capillary viscometers typically rely on mechanical techniques in quantifying whole-blood viscosity, a process in which resistance to blood flow is measured in response to an applied force. The direct applicability of conventional viscometers as point-of-care diagnostic and clinical tools is subject to several limitations mainly related to their macro-structural features that augment the sampling size and reduce portability. The development of new fabrication technologies to scale down experimental processes has opened up the reality of miniaturizing existing concepts of blood viscometers into microchips, and paves the road for future development of blood viscometers. These micro-blood viscometers are advantageous because they use very small sample volumes for quick, routine clinical purposes. The easy fabrication of microsystems and large-scale production not only result in a lower cost, but also render these devices portable and disposable, both of which are highly desirable for clinical applications. The underlying challenges of these devices are associated with red blood cell clogging, measurement stability, reliability, and reproducibility. The present review discusses the state-of-the-art and emerging trends in the field of microfluidics to provide elegant solutions for quantifying blood viscosity with vastly improved efficacy and with the potential for use at the patient’s bedside.</P>
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